EP1237768A1 - Dispositif de commande du systeme de freinage d'un vehicule automobile - Google Patents

Dispositif de commande du systeme de freinage d'un vehicule automobile

Info

Publication number
EP1237768A1
EP1237768A1 EP01987718A EP01987718A EP1237768A1 EP 1237768 A1 EP1237768 A1 EP 1237768A1 EP 01987718 A EP01987718 A EP 01987718A EP 01987718 A EP01987718 A EP 01987718A EP 1237768 A1 EP1237768 A1 EP 1237768A1
Authority
EP
European Patent Office
Prior art keywords
brake
pedal
housing
actuating device
motor vehicle
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Withdrawn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
EP01987718A
Other languages
German (de)
English (en)
Inventor
Metin Ersoy
Waldemar Rogowski
Dieter GRÖGER
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.)
ZF Lemfoerder GmbH
Original Assignee
ZF Lemfoerder 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 ZF Lemfoerder GmbH filed Critical ZF Lemfoerder GmbH
Publication of EP1237768A1 publication Critical patent/EP1237768A1/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Withdrawn legal-status Critical Current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
    • B60T13/10—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 fluid assistance, drive, or release
    • B60T13/24—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 fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/567—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • 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
    • B60T13/10—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 fluid assistance, drive, or release
    • B60T13/24—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 fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/565—Vacuum systems indirect, i.e. vacuum booster units characterised by being associated with master cylinders, e.g. integrally formed

Definitions

  • the invention relates to an actuating device for the brake system of a motor vehicle with a pedal block with the brake pedal pivotally attached to it, a brake booster with a two-part housing and an associated master cylinder assembly for the hydraulic application of force to the individual wheel brakes of the motor vehicle.
  • actuating devices are known in the prior art in different configurations and are used in principle in every motor vehicle.
  • the design of the individual components of the actuating device differs in terms of size and shape and in terms of additional attachments, but there are also fundamental similarities for the individual components. This is how the brake booster housing is made
  • the master brake cylinder assembly which consists of a master brake cylinder housing with internal components and a reservoir for the brake hydraulic fluid, is screwed onto the front side of the brake booster facing away from the pedal block.
  • the master brake cylinder housing is generally a machined cast metal component. Supplementary parts necessary for the operation of the entire actuating device - such as Limit switches, actuation cables, return springs or bearing components, for example - are individually mounted on the overall assembly.
  • GB 2235 026 A discloses an assembled module consisting of a brake booster and a brake pedal, the rear wall of the brake booster and the holding means for the brake pedal being molded in one piece from plastic.
  • the master brake cylinder is arranged on the brake booster, a push rod for actuating the brake system being secured to the brake pedal.
  • a clutch pedal and an accelerator pedal can also be secured to the mounting means.
  • GB 2235 263 A discloses an assembled module from a brake booster and a brake pedal, the rear wall of the brake booster and the holding means for the brake pedal being molded in one piece from plastic.
  • the master brake cylinder is arranged on the brake booster, a push rod for actuating the brake system being secured to the brake pedal.
  • the brake booster and brake pedal are assembled into a single unit before installation in the motor vehicle.
  • a clutch pedal and an accelerator pedal can also be secured to the holding means
  • DE 93 15 502 U1 discloses a pedal which is preferably combined for the actuation of a vehicle clutch with a piston which is displaceably guided in a master cylinder.
  • the pedal is pivotally mounted in a pedal block and with a Piston rod of the piston connected.
  • the master cylinder which is largely made of plastic, is pivotable, the piston rod and a housing guiding the piston rod having a pivotable mounting.
  • the technical problem of the present invention is therefore to design an actuating device for the brake system of a motor vehicle in such a way that both the production costs and the installation dimensions can be reduced.
  • an actuating device of the type according to the invention should enable a considerable reduction in the vertical range of manufacture in order to meet the requirements of modern motor vehicle production with regard to modular construction.
  • the actuating device according to the invention for the brake system of a motor vehicle has a pedal block with a brake pedal pivotally attached to it, a brake booster with a housing comprising a housing base part and a housing bell and a master brake cylinder assembly connected to this for hydraulic application of force to the individual wheel brakes of the motor vehicle.
  • the pedal block and the housing base are molded in one piece from plastic.
  • the bell housing and the master cylinder assembly having a reservoir with a reservoir bottom and a piston unit are formed as a one-piece plastic part, a hydraulic tube encased by the plastic part for accommodating the individual brake pistons being arranged within the piston unit.
  • the pedal block and the brake booster housing base part facing the pedal block are molded in one piece from plastic. Furthermore, the connected master cylinder assembly with the reservoir and the piston unit is integrated into the plastic part.
  • the combination of the brake booster housing with the pedal block offers decisive advantages over the prior art in several ways. On the one hand, due to the plastic material, components that are additionally required and their receptacles can be integrated into the pedal block brake booster housing module in a very simple manner, to a much greater extent than in the previously provided sheet metal construction.
  • both the part formed from the housing base part and the pedal block and the part formed from the housing bell and the master cylinder assembly are designed as a plastic injection molded part.
  • This design creates a completely preassembled assembly, which leads to a reduction in the number of individual parts, lower costs and, due to the high use of plastic material, to a substantial reduction in weight.
  • the entire assembly can be pre-assembled and tested independently of the vehicle, so that during the actual final assembly of the motor vehicle, the entire actuating device only has to be attached to the bulkhead of the associated motor vehicle and the brake lines have to be connected to the individual wheel brakes of the motor vehicle.
  • a hydraulic tube, encased in the plastic part, for accommodating the master brake cylinder pistons is arranged within the piston unit of the master brake cylinder assembly.
  • This structural design ensures reliable functioning of the master brake cylinder and a correspondingly long service life.
  • the plastic part is also designed as a plastic injection-molded part, then the injection of the hydraulic tube into the plastic part of the actuating device according to the invention means that it is very inexpensive to manufacture.
  • the design of the actuating device according to the invention can also be made even more cost-effective if a common bearing element for the storage of both the brake pedal and an additional clutch and / or Accelerator pedal. As a result of this measure, the individual bearings with their individual parts, which are customary in the prior art, and the costs necessary for the assembly of the individual pedals are eliminated.
  • the pedal block has non-contact sensors such as Hall sensors or inductive sensors for recording the angular position of the brake pedal and additional clutch or accelerator pedal, the signal being transmitted to downstream evaluation modules of a motor vehicle electronics by a central connector module.
  • non-contact sensors work without bounce and wear, are electronically adjustable and lead to a further functional integration of the entire actuation device, the final test of the entire module being further simplified.
  • the feeling of actuation for the pivoting of the individual pedals can be improved in that the pedal block has one or more control cams, on which one with the brake pedal and / or the clutch and
  • Accelerator pedal firmly connected spring-loaded roller rolls when the pedals are pivoted.
  • the manufacture of the brake booster housing from plastic also makes it possible to integrate supply lines for the application of negative pressure or ambient pressure to the interior of the brake booster housing in the housing wall of the brake booster housing. This measure leads to a further reduction in assembly work, particularly in the case of two-stage brake boosters (tandem BKV).
  • FIG. 1 shows a sectional side view of a first exemplary embodiment of the actuating device according to the invention for the brake system of a motor vehicle
  • Figure 2 is a plan view of the actuating device of Figure 1 from the side facing the passenger compartment and
  • Figure 3 shows a second embodiment of the subject of the invention in a side sectional view.
  • the actuating device for the brake system of a motor vehicle has a pedal block 1, a brake booster 2 and a master cylinder 3 provided with a reservoir 4.
  • Several brake lines for the hydraulic power application of the individual wheel brakes are connected to the master brake cylinder group, the individual illustration of which has been omitted in the drawings for reasons of clarity.
  • the brake booster 2 essentially consists of a bell housing 5 and a housing base part 6, which together in this exemplary embodiment delimit an interior space divided by a piston 7 into two partial regions.
  • a protruding bracket 8 is arranged, which receives a common bearing element 9 for the pivotable mounting of a brake pedal 10 and a clutch pedal 11.
  • the pedal block 1 itself can be fixed to a bulkhead of a motor vehicle, not shown, with a plurality of screws which can be inserted through through bores 13.
  • Pedal block 1, housing base part 6 and housing bell 5 are designed as plastic injection-molded parts, the pedal block 1 and the housing base part 6 forming a common structural unit.
  • the piston unit 14 belonging to the master brake cylinder group 3 is also designed together with the housing bell 5 as an integral plastic injection part, the plastic injection part of the piston unit 14 also comprising the reservoir 4 of the master brake cylinder unit 3.
  • a hydraulic tube 15 is integrated into the plastic injection part within the piston unit 14 and receives the brake pistons 17, 18 in an internal through bore 16 for the hydraulic application of force to the individual wheel brakes.
  • the connection between the master brake cylinder assembly 3, the brake booster 2 and the pivotable brake pedal 10 is made by a push rod 19.
  • the push rod 19 is connected to the brake pedal 10 by a bolt 20 which is slidably received in an elongated hole 21 of the brake pedal 10.
  • This special connection between the drain rod 19 and the brake pedal 10 enables a straight guide 22 of the drain rod, which leads to a further reduction in the overall length of the actuating device.
  • the reduction in the overall length enables the use of a tandem brake booster, as shown in FIG. 3, with the same overall space utilization; instead of a conventional single-stage variant, which in turn increases the support forces when the brake pedal is pressed and makes it easier for the user to operate the brake system.
  • a pin element 26 which is fixedly connected to the brake pedal 10 is integrally formed on the brake pedal 10.
  • the pin element 26 is finger-shaped and has at its front, free end facing away from the brake pedal 10 at least one roller 27, which is pressed by a drain spring, not shown, against a control curve 28 on the pedal block 1.
  • a pivoting of the brake pedal 10 leads to a rolling of the roller 27 on the control cam 28 and, as a result, to one depending on the pivoting angle different restoring torque and, consequently, a different actuation feeling for the brake pedal 10.
  • control curve 28 in connection with the rolling effect of the roller 27 allows a constructive adjustment of the brake pedal actuation and an optimization of the actuation feeling.
  • At least one Hall sensor or inductive sensor 30 for contactless signal recording of the angular position of the brake pedal is arranged on the pedal block 1.
  • Such a sensor 30 can of course also be used for contactless data transmission of the current position of an accelerator pedal 12, as is also illustrated in FIG. 2.
  • the signals received are transmitted by a central plug-in module 31, which transmits the signals to the motor vehicle electronics with the interposition of an evaluation module 32.
  • the evaluation module 32 can, according to the invention, be integrated in the pedal block (see FIG. 2) and convert the recorded signals via a CAN bus or a corresponding processor for further use within the motor vehicle electronics.
  • the Hall sensors or inductive sensors 30 used are designed according to the invention in such a way that they replace the switches for rear light, shift lock, any brake assist and any other complementary sensor elements that are usually used in the prior art.
  • the manufacture of the brake booster housing from plastic also makes it possible to integrate supply lines 33 into the housing wall of the brake booster housing for the interior of the brake booster housing to be subjected to negative pressure or ambient pressure.
  • FIG. 3 shows an embodiment variant according to the invention with a two-stage
  • Brake booster (tandem BKV) shown, in which the supply lines are embedded in the housing. This measure leads to a further reduction in assembly effort, particularly in the case of two-stage brake boosters.
  • the design according to the invention creates a compact actuating device for the brake system of a motor vehicle, in which the number of individual parts used is significantly reduced compared to the prior art and which enables the entire assembly including the final inspection to be preassembled.
  • the entire actuating device can be delivered completely to the motor vehicle final assembly line and is only fastened to the body of the motor vehicle with the aid of the screw connections passed through the bores 13.

Landscapes

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

Abstract

L'invention concerne un dispositif de commande du système de freinage d'un véhicule. Ce dispositif comprend un bloc pédale (1) avec une pédale de frein (10) montée pivotante, un amplificateur de force de freinage (2) doté d'un boîtier présentant une base (6) et une calotte (5), et un composant maître-cylindre de frein (3) relié au boîtier et permettant d'exercer une force hydraulique sur les différents freins sur roue du véhicule automobile. Le bloc pédale (1) et la base de boîtier (6) sont moulés d'une seule pièce en plastique. La calotte (5) et le composant maître-cylindre de frein (3) qui présente un réservoir (4) pourvu d'une base (4a) et une unité piston (14), sont moulés d'une seule pièce sous la forme d'une pièce en matière plastique. De plus, l'unité piston (14) abrite un tuyau hydraulique (15) qui est enveloppé de la pièce en matière plastique et est destiné à recevoir les différents pistons de frein (17). Cette conception selon l'invention permet d'obtenir un dispositif de commande particulièrement compacte, ce qui permet de réduire le poids et le nombre de pièces détachées utilisées. Des conceptions spéciales de l'objet de l'invention, permettent également d'utiliser un amplificateur de force de freinage tandem au lieu de l'amplificateur de force de freinage simple qui correspond à l'état de la technique.
EP01987718A 2000-10-20 2001-10-18 Dispositif de commande du systeme de freinage d'un vehicule automobile Withdrawn EP1237768A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10052290A DE10052290A1 (de) 2000-10-20 2000-10-20 Betätigungseinrichtung für die Bremsanlage eines Kraftfahrzeuges
DE10052290 2000-10-20
PCT/DE2001/003927 WO2002032738A1 (fr) 2000-10-20 2001-10-18 Dispositif de commande du systeme de freinage d"un vehicule automobile

Publications (1)

Publication Number Publication Date
EP1237768A1 true EP1237768A1 (fr) 2002-09-11

Family

ID=7660610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01987718A Withdrawn EP1237768A1 (fr) 2000-10-20 2001-10-18 Dispositif de commande du systeme de freinage d'un vehicule automobile

Country Status (7)

Country Link
US (1) US20030025389A1 (fr)
EP (1) EP1237768A1 (fr)
JP (1) JP2004511393A (fr)
BR (1) BR0107337A (fr)
DE (1) DE10052290A1 (fr)
MX (1) MXPA02005392A (fr)
WO (1) WO2002032738A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10296037B2 (en) 2015-09-18 2019-05-21 Kongsberg Power Products Systems I, Inc. Pedal assembly with identical first and second housing components
US10551866B2 (en) 2015-09-18 2020-02-04 Kongsberg Power Products Systems I, Inc. Pedal assembly with debris filtering mechanism

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006034936B4 (de) * 2006-07-28 2015-08-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kraftfahrzeug
BR112012003649A2 (pt) * 2009-08-18 2017-05-23 Ksr Tech Co conjunto de pedal de freio com um sensor de posição sem contato
DE102012000478B4 (de) 2012-01-13 2023-06-01 Volkswagen Aktiengesellschaft Fußhebelwerk für ein Fahrzeug sowie Fahrzeug
KR102173665B1 (ko) * 2012-05-03 2020-11-03 케이에스알 아이피 홀딩스 엘엘씨. 전자 제동 시스템을 위한 페달 어셈블리
WO2023091634A1 (fr) 2021-11-19 2023-05-25 Ksr Ip Holding, Llc Ensemble pédale d'émulateur de force passive

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941198A1 (de) * 1979-10-11 1981-05-14 Alfred Teves Gmbh, 6000 Frankfurt Hauptbremszylinder fuer eine hydraulische bremsanlage
DE8810531U1 (fr) * 1988-08-19 1989-12-21 Lucas Industries P.L.C., Birmingham, West Midlands, Gb
GB2235263A (en) 1989-08-15 1991-02-27 Gen Motors France Assembled module of brake booster and pedal
GB2235026A (en) 1989-08-15 1991-02-20 Gen Motors France Assembled module of brake booster and pedal
DE9315502U1 (de) 1993-10-13 1993-12-09 Schaeffler Waelzlager Kg Pedal- und Geberzylindergestaltung
JPH09290714A (ja) * 1996-04-30 1997-11-11 Toyota Motor Corp 車両用ペダル支持構造
DE19838607A1 (de) * 1998-08-25 2000-03-02 Continental Teves Ag & Co Ohg Betätigungsaggregat für eine Kraftfahrzeugbrems- und/oder -kupplungsanlage
BR9914033A (pt) * 1998-09-22 2001-06-19 Brose Fahrzeugteile Processo e dispositivo para controle e regulação elétricos do movimento de um agregado eletricamente acionado de um automóvel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0232738A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10296037B2 (en) 2015-09-18 2019-05-21 Kongsberg Power Products Systems I, Inc. Pedal assembly with identical first and second housing components
US10551866B2 (en) 2015-09-18 2020-02-04 Kongsberg Power Products Systems I, Inc. Pedal assembly with debris filtering mechanism

Also Published As

Publication number Publication date
MXPA02005392A (es) 2003-01-28
DE10052290A1 (de) 2002-05-08
US20030025389A1 (en) 2003-02-06
WO2002032738A1 (fr) 2002-04-25
JP2004511393A (ja) 2004-04-15
BR0107337A (pt) 2002-08-27

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