EP2280856A1 - Amplificateur électromécanique de force de freinage - Google Patents

Amplificateur électromécanique de force de freinage

Info

Publication number
EP2280856A1
EP2280856A1 EP09737926A EP09737926A EP2280856A1 EP 2280856 A1 EP2280856 A1 EP 2280856A1 EP 09737926 A EP09737926 A EP 09737926A EP 09737926 A EP09737926 A EP 09737926A EP 2280856 A1 EP2280856 A1 EP 2280856A1
Authority
EP
European Patent Office
Prior art keywords
piston rod
auxiliary power
power generator
brake booster
spindle
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.)
Withdrawn
Application number
EP09737926A
Other languages
German (de)
English (en)
Inventor
Herbert Vollert
Jochen Mayer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2280856A1 publication Critical patent/EP2280856A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE 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
    • B60T13/00—Transmitting 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
    • B60T13/74—Transmitting 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
    • B60T13/745—Transmitting 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 a hydraulic system, e.g. a master cylinder

Definitions

  • the invention relates to an electromechanical brake booster having the features of the preamble of claim 1.
  • Such an electromechanical brake booster is known from Offenlegungsschrift DE 103 27 553 A1.
  • the known brake booster has a piston rod which mechanically connects a brake pedal to a piston of a master cylinder.
  • a piston rod in the sense of the invention should generally be understood to mean a connecting element which mechanically connects a brake pedal to a piston of a master cylinder, regardless of the shape of the connecting element, that is, even if the shape of the connecting element does not remind one of a rod.
  • another operating element for actuating a vehicle brake system can be provided by muscle power, for example a handbrake lever.
  • the term "brake pedal” is to be understood generally as meaning such an operating element
  • the piston rod of the known brake booster has a driver which interacts with a spindle of a helical gear. cally.
  • a mother of the spindle drive is also a rotor of an electric motor of the electromechanical brake booster.
  • the electric motor with the spindle drive can be regarded as an electromechanical auxiliary power generator, which exerts an auxiliary force on the piston rod when energized via the driver, which increases an exerted by muscle force operating force. If the brake pedal is stepped on quickly, for example during an emergency braking, the piston rod can lead the threaded spindle, the vehicle brake system is then actuated exclusively by muscle power. A driver must not accelerate the spindle and the spindle nut, which is also the rotor of the electric motor.
  • the electromechanical brake booster according to the invention with the features of claim 1 has a piston rod and an electromechanical auxiliary power generator.
  • the auxiliary power generator can be an electric motor with a spindle drive or, generally, a rotational / translational conversion gear which has the rotating drive movement of the electric motor in a translatory movement for displacing the piston rod.
  • the electric motor and the rotation / translation conversion gear can be interposed a reduction gear.
  • Other possibilities for the electromechanical auxiliary power generator are a linear motor, an electromagnet or possibly a piezoelectric element, that is generally a device that converts electrical energy into mechanical energy.
  • an output element of the auxiliary power generator is connected elastically, for example by means of a spring element, to the piston rod.
  • the output element is the translationally moving element of the auxiliary power generator, in the case of an electric motor with spindle drive so the threaded spindle or nut, if the spindle driven in rotation and the mother is rotationally fixed and axially displaceable, in the case of a linear motor or solenoid whose armature.
  • the elastic connection need not be made directly on the piston rod but can also indirectly, for example via the brake pedal or the this can also be done indirectly, for example, via the brake pedal or the piston of the master cylinder.
  • the invention has the advantage that in a rapid braking operation, for example, in emergency braking, the piston rod can precede the output member of the auxiliary power generator, a power transmission from the piston rod to the output member of the auxiliary power generator is reduced in comparison to a rigidly connected to the output member piston rod, which e- the same is to be applied by a driver in a quick brake effort muscle power, because he has to accelerate the moving parts of the auxiliary power generator less strong because of the elastic connection. Nevertheless, the driver accelerates the moving parts of the auxiliary power generator via the elastic connection, so that the auxiliary power generator accelerates faster, for example, an electric motor of the auxiliary power generator starts faster.
  • the electromechanical brake booster according to the invention is a third party power generator for actuating a vehicle brake system by external force, ie without muscle power of the driver.
  • An auxiliary braking in case of failure of the auxiliary power generator or its power supply or control / regulation is always possible.
  • the auxiliary braking is a Notbrem- solution as I said in case of failure of the auxiliary power generator and not to be confused with the auxiliary power braking, in which a part of the applied braking force operating force is applied by the muscular force of the driver and the rest of the operating force from the auxiliary power generator.
  • the auxiliary brake is the intended brake operation.
  • FIGURE shows an electromechanical brake booster according to the invention in axial section.
  • the illustrated in the drawing electromechanical brake booster 1 comprises a piston rod 2, which connects a brake pedal 3 mechanically with a piston, not shown, of a master cylinder and transmits a force exerted by the brake pedal 3 muscle power to the piston of the master cylinder.
  • the introduction of muscle power can also be done with a hand brake lever or other control instead of the brake pedal 3 (not shown).
  • the brake booster 1 has an electromechanical auxiliary power generator 4, which comprises an electric motor 5 and a helical gear 6.
  • the electric motor 5 is designed as a hollow shaft motor, it surrounds the piston rod 2 concentrically.
  • a rotor 7 of the electric motor 5 is designed as a hollow shaft, carries the rotor windings 8 and concentrically surrounds the piston rod 2.
  • the rotor 7 is concentrically enclosed by a stator 9 with stator windings 10.
  • the rotor 7 is rotatably mounted in the stator 9 with ball bearings 11 ,
  • the illustrated and described construction of the electric motor 5 is not mandatory for the invention.
  • the designed as a hollow shaft rotor 7 also forms a nut of the helical gear 6, ie, the rotor 7 has an internal thread.
  • the helical gear 6 converts a rotary drive movement of the electric motor 5 into a translatory movement for displacing the piston rod 2.
  • the helical gear 6 is designed as a spindle drive, specifically as a ball screw drive. That too is not necessarily for the invention.
  • the helical gear 6 has a hollow spindle 12, which is arranged concentrically in the rotor 7 and which surrounds the piston rod 2 concentrically.
  • the spindle 12 has a thread which is in engagement with the internal thread of the rotor 7 via balls 13.
  • the threads of the rotor 7 and the spindle 12 are helical ball tracks.
  • the piston rod 2 has a driver 14 which cooperates with the spindle 12.
  • the driver 14 is an annular step on the non-illustrated piston of the master cylinder near side, which faces the brake pedal 3 and cooperates with the front end of the spindle 12, which faces the piston of the master cylinder, not shown.
  • a damper 16 is arranged on the piston rod 2.
  • the damper 16 is a rubber buffer, it has the shape of a rubber ring with a rectangular cross-section.
  • the electric motor 5 of the auxiliary power generator 4 is energized, thereby rotatably driving the rotor 7, which forms the nut, and the spindle 12 is displaced in an actuating direction, ie in the direction of the piston of the master cylinder, not shown.
  • the auxiliary power generator 4 exerts in this way via the damper 16 and the driver 14 an auxiliary force on the piston rod 2, which increases the force exerted by the brake pedal 3 muscle power.
  • a control or regulation of the auxiliary power generator 4 is not shown.
  • a spring element 15 connects the piston rod 2 elastically with the spindle 12.
  • the spring element 15 is a helical tension spring whose one end turn is connected to the piston rod 2 and whose other end turn is connected to the spindle 12. It is not mandatory to use a helical tension spring as spring element 15, it can also be a Helical compression spring or another elastic element find use (not shown).
  • the driver 14 designed as an annular step can lift off from the front end of the spindle 12 and the piston rod 2 can lead the spindle 12 forward, ie the piston rod 2 can become In the direction of actuation, a vehicle driver must thereby not fully accelerate the moving parts of the auxiliary power generator 4, that is to say the spindle 12 and the rotor 7 forming the nut, the electric motor 5 can start slower than it corresponds to the movement of the piston rod 2. The muscle power required for rapid braking is thereby reduced. Due to the elastic connection of the piston rod 2 with the spindle 12 via the spring element 15, the vehicle driver nevertheless accelerates the spindle 12 and thereby facilitates and accelerates the startup of the electric motor 5.
  • the helical gear 6 forms a rotation / translation conversion gear that converts a rotary drive movement of the electric motor 5 in a translatory-see movement to a brake operation.
  • the spindle 12 forms an output element of the auxiliary power generator 4. At an operating speed which does not exceed an acceleration during start-up of the electric motor 5, the spindle 12 transmits the auxiliary power of the auxiliary power generator 4 without the elasticity of the spring element 15 to the ring stage of the piston 14 forming the driver 14.
  • the damper 16 dampens an impact of the spindle 12 on the driver 14 when, after a quick brake operation, the spindle 12 "overtakes” the "pre-slotted” driver 14 of the piston rod 2.
  • a brake booster overshoot and brake pressure increase by the accelerated auxiliary power generator 4 is reduced when the spindle 12 against the driver 14th power harvester 4 reduced when the spindle 12 abuts against the driver 14.
  • the damper 16 may be in the dissolved home position of the brake booster 1, a distance between the front end of the spindle 12 and the driver 14. The damping is then carried out by compressing the spring element 15, so a compressive stress of the spring element 15 before the spindle abuts against the driver 14.
  • the damping can also be omitted. In this case, eliminates the damper 16 and the spindle 12 is located in the dissolved home position of the brake booster 1 on the driver 14. This allows a bias of the spring element 15 and the power transmission from the auxiliary power generator 4 to the piston rod 2 takes place without elasticity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un amplificateur électromécanique de force de freinage (1) comprenant un moteur électrique (5) et un engrenage hélicoïdal (6) qui applique par accouplement une force auxiliaire dans une tige de piston (2) par le biais d'un élément d'entraînement (14). Selon l'invention, une broche (12) de l'engrenage hélicoïdal (6) est reliée de manière souple par le biais d'un élément ressort (15) avec la tige de piston (2) de sorte que lors d'un actionnement rapide du frein, il n'est pas nécessaire d'accélérer l'engrenage hélicoïdal (6) et un rotor (7) du moteur électrique (4) entièrement par la force musculaire. La force musculaire nécessaire pour un actionnement du frein est ainsi réduite lors d'un actionnement rapide du frein.
EP09737926A 2008-04-30 2009-03-10 Amplificateur électromécanique de force de freinage Withdrawn EP2280856A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001522A DE102008001522A1 (de) 2008-04-30 2008-04-30 Elektromechanischer Bremskraftverstärker
PCT/EP2009/052755 WO2009132882A1 (fr) 2008-04-30 2009-03-10 Amplificateur électromécanique de force de freinage

Publications (1)

Publication Number Publication Date
EP2280856A1 true EP2280856A1 (fr) 2011-02-09

Family

ID=40668453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09737926A Withdrawn EP2280856A1 (fr) 2008-04-30 2009-03-10 Amplificateur électromécanique de force de freinage

Country Status (9)

Country Link
US (1) US8783792B2 (fr)
EP (1) EP2280856A1 (fr)
JP (1) JP2011518719A (fr)
KR (1) KR101558195B1 (fr)
CN (1) CN102015397B (fr)
BR (1) BRPI0911913A2 (fr)
DE (1) DE102008001522A1 (fr)
RU (1) RU2523536C2 (fr)
WO (1) WO2009132882A1 (fr)

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WO2019238472A1 (fr) 2018-06-13 2019-12-19 Robert Bosch Gmbh Accumulateur d'énergie de secours pour véhicule

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DE102009047641A1 (de) * 2009-12-08 2011-06-09 Robert Bosch Gmbh Bremskraftverstärker
DE102010042694A1 (de) * 2010-07-27 2012-02-02 Robert Bosch Gmbh Kopplungsvorrichtung zum Verbinden eines Bremseingabeelements mit einem Hauptbremszylinder und Verfahren zum Betreiben einer derartigen Kopplungsvorrichtung
DE102010039186A1 (de) * 2010-08-11 2012-02-16 Robert Bosch Gmbh Bremssystem für ein Fahrzeug
DE102010062785A1 (de) * 2010-12-10 2012-06-14 Robert Bosch Gmbh Elektromechanischer Bremskraftverstärker mit einstellbarer nicht-linearer Unterstützungskraft
DE102011083827A1 (de) * 2011-09-30 2013-04-04 Robert Bosch Gmbh Primärkolbenbaugruppe für einen Hauptbremszylinder eines Bremssystems eines Fahrzeugs, Herstellungsverfahren für ein Bremsgerät und Verfahren zum Betreiben eines Bremsgeräts
CN103129546B (zh) * 2011-12-05 2016-11-02 博世汽车部件(苏州)有限公司 电子控制制动助力器
CN102582607A (zh) * 2012-02-02 2012-07-18 北京智华驭新汽车电子技术开发有限公司 一种基于直流电机的汽车制动助力装置
KR102020530B1 (ko) * 2012-04-20 2019-09-10 이페게이트 아게 축방향 구동부의 베어링 배열
KR101381381B1 (ko) * 2012-08-16 2014-04-04 주식회사 만도 전자 제어식 브레이크 부스터
CN103802813B (zh) * 2012-11-12 2018-11-06 博世汽车部件(苏州)有限公司 助力器及制动系统
KR101975174B1 (ko) * 2012-11-28 2019-05-07 현대모비스 주식회사 전동부스터 방식 제동장치의 하중 지지 구조
CN103085785A (zh) * 2013-01-29 2013-05-08 吉林大学 机电复合制动系统制动操纵机构
DE102013208672A1 (de) * 2013-05-13 2014-11-13 Robert Bosch Gmbh Elektromechanische Bremsvorrichtung für ein Bremssystem und Bremssystem für ein Fahrzeug
KR101500303B1 (ko) * 2013-07-25 2015-03-18 주식회사 만도 전자식 브레이크 장치 및 그 제어 방법
CN104442779B (zh) * 2013-09-20 2017-12-22 吉林大学 具有减速增扭运动转换机构及主动调节的多功能制动系统
CN104015717B (zh) * 2014-06-16 2016-08-17 清华大学 一种可锁止的电子制动系统执行机构
CN105197002B (zh) * 2014-06-24 2018-12-07 上海通用汽车有限公司 车辆制动助力器及其控制方法
DE102014217433A1 (de) * 2014-09-01 2016-03-03 Robert Bosch Gmbh Bremskraftverstärker für ein Bremssystem eines Fahrzeugs
US9815445B2 (en) 2014-10-29 2017-11-14 Bwi (Shanghai) Co., Ltd. Brake booster assembly
DE102015211359A1 (de) * 2015-06-19 2017-01-05 Volkswagen Aktiengesellschaft Vorbereitung eines Bremsvorganges in einem Kraftfahrzeug
FR3040957B1 (fr) * 2015-09-14 2017-10-06 Bosch Gmbh Robert Systeme d'assistance de freinage
DE102015217518A1 (de) * 2015-09-14 2017-03-16 Robert Bosch Gmbh Elektromechanischer Bremskraftverstärker und Verfahren zur Herstellung eines elektromechanischen Bremskraftverstärkers
DE102015217530A1 (de) * 2015-09-14 2017-03-16 Robert Bosch Gmbh Bremskraftverstärker für ein Kraftfahrzeug
GB2554374B (en) * 2016-09-22 2021-10-27 Arrival Ltd Pedal assembly piezoelectric generator
DE102017222138A1 (de) * 2017-12-07 2019-06-13 Lucas Automotive Gmbh Elektromechanischer Bremskraftverstärker mit Dämpfungselement, Fahrzeugbremsanlage, Baugruppe hierfür und Dämpfungselement
DE102018123042A1 (de) * 2018-09-19 2020-03-19 Fte Automotive Gmbh Elektrischer Kupplungsaktuator mit federbelastetem Druckstück
RU2712839C1 (ru) * 2019-02-05 2020-01-31 Федеральное казенное предприятие "Научно-исследовательский институт "Геодезия" (ФКП "НИИ "Геодезия") Устройство для торможения баллистического маятника (варианты)
KR102664815B1 (ko) * 2019-08-05 2024-05-10 현대모비스 주식회사 차량용 전동부스터
CN111231922B (zh) * 2020-02-17 2022-03-18 安徽理工大学 一种具备安全冗余的解耦式电液制动系统
CN111497811A (zh) * 2020-05-06 2020-08-07 北京理工大学 一种多模式电子液压制动器助力系统及控制方法
CN112918451B (zh) * 2021-04-08 2022-03-15 合肥工业大学 一种电机控制液压制动系统
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Publication number Priority date Publication date Assignee Title
WO2019238472A1 (fr) 2018-06-13 2019-12-19 Robert Bosch Gmbh Accumulateur d'énergie de secours pour véhicule
DE102018209464A1 (de) 2018-06-13 2019-12-19 Robert Bosch Gmbh Notenergiespeicher für ein Fahrzeug
US11851038B2 (en) 2018-06-13 2023-12-26 Robert Bosch Gmbh Emergency energy store for a vehicle

Also Published As

Publication number Publication date
US8783792B2 (en) 2014-07-22
KR20110006668A (ko) 2011-01-20
KR101558195B1 (ko) 2015-10-07
JP2011518719A (ja) 2011-06-30
WO2009132882A1 (fr) 2009-11-05
CN102015397B (zh) 2015-06-24
US20110048874A1 (en) 2011-03-03
DE102008001522A1 (de) 2009-11-05
RU2010148540A (ru) 2012-06-10
BRPI0911913A2 (pt) 2016-10-04
CN102015397A (zh) 2011-04-13
RU2523536C2 (ru) 2014-07-20

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