WO2005026861A2 - Dispositif pedale de vehicules automobiles - Google Patents

Dispositif pedale de vehicules automobiles Download PDF

Info

Publication number
WO2005026861A2
WO2005026861A2 PCT/DE2004/001510 DE2004001510W WO2005026861A2 WO 2005026861 A2 WO2005026861 A2 WO 2005026861A2 DE 2004001510 W DE2004001510 W DE 2004001510W WO 2005026861 A2 WO2005026861 A2 WO 2005026861A2
Authority
WO
WIPO (PCT)
Prior art keywords
leaf spring
pedal
deformation
spring
evaluation electronics
Prior art date
Application number
PCT/DE2004/001510
Other languages
German (de)
English (en)
Other versions
WO2005026861A3 (fr
Inventor
Thomas Klotzbuecher
Bernhard Bauer
Harald Kazmierczak
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 WO2005026861A2 publication Critical patent/WO2005026861A2/fr
Publication of WO2005026861A3 publication Critical patent/WO2005026861A3/fr

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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/38—Controlling members actuated by foot comprising means to continuously detect pedal position

Definitions

  • Pedal device for motor vehicles including a position transmitter for the pedal, which generates an electrical control signal dependent on the pedal position, and a spring device in the form of at least one that is elastically deformable when the pedal is actuated Leaf spring, in the deformation region of which a deformation or force sensor for generating a deformation or force signal is arranged, in the dependence of which evaluation electronics generate the actuating signal, according to the preamble of claim 1.
  • a pedal device is, for example, from DE 40 24 018 A1 known.
  • the one-piece leaf spring By the leaf spring carrying the evaluation electronics, the connections of which are electrically conductively connected to a section of the leaf spring to which at least one electrical contact is formed as an interface for the connection of electrical components or line elements, the one-piece leaf spring also functions as a carrier element of the evaluation electronics and as Signal-conducting connection between this and the electrical contact that is molded onto it. This reduces the number of components to be assembled, which has a favorable effect on the manufacturing costs.
  • the electrical contact integral with the leaf spring is preferably connected to a line connection by means of a plug. Connection connectable, which controls the control signal in an engine control unit of the motor vehicle.
  • the electrical contact from a region of the leaf spring which is arranged outside the deformation region includes plug tongues for the electrical plug which protrude in parallel at the end and are spaced apart in the transverse direction.
  • the tongues are made, for example, by punching the leaf spring.
  • one end of a return spring arrangement for generating a return force counteracting the actuating force on the pedal is supported on the deformation region of the leaf spring and the other end is supported on the pedal.
  • the return spring assembly includes, for example, one or more coil springs.
  • a protruding receptacle for the helical springs is molded onto the deformation area of the leaf spring and can be produced inexpensively.
  • the actuating forces acting on the pedal are transmitted to the leaf spring via the return spring arrangement and ensure in their deformation area that the leaf spring is deformed or loaded by the deformation or force sensor and to generate the actuating signal proportional to the deformation or the load.
  • the evaluation electronics and a section of the leaf spring which is arranged outside the deformation region and in the vicinity of the electrical contact are preferably connected to one another by means of a sheathing injection molded plastic body. This prevents the function of the evaluation electronics from being influenced by the deformation taking place in the deformation area of the leaf spring. In addition, a secure fixation is due to the material connection Evaluation electronics given on the leaf spring, which is simple and inexpensive to implement. Due to the adjacent arrangement of the electrical contacts and the evaluation electronics, the line paths are short, with a correspondingly low signal attenuation. 5
  • the deformation or force sensor is preferably formed by a strain gauge which is attached to the leaf spring with the interposition of an insulating layer in order to provide insulation of the electrical contact of the leaf spring with respect to the electrically conductive strain gauge.
  • At least the deformation area of the leaf spring preferably spans a depression of a bearing block of the pedal device, at least the ends of the leaf spring being clamped in the bearing block.
  • the bearing block is formed by an injection molding in which the ends of the leaf spring are cast.
  • the leaf spring together with the evaluation electronics and the deformation or force sensor, with the exception of at least a free part of the electrical contact is covered by a protective layer, which is covered, for example, by a lacquer layer or an elastomer layer is formed.
  • FIG. 1 shows a longitudinal section through a pedal device according to a preferred embodiment with a leaf spring
  • FIG. 2 shows a cross section through the pedal device from FIG. 1
  • 3 shows a schematic longitudinal sectional illustration of the leaf spring from FIG. 1
  • 4 shows a schematic plan view of the leaf spring of FIG. 1.
  • the pedal device 1 of a motor vehicle shown in FIG. 1 includes a pedal 6 which can be actuated by the driver and is pivotally mounted on a bearing block 2 about a pivot axis 4, of which only a section near the bearing block is shown for reasons of scale.
  • the pedal device 1 is fastened to a body structure of the motor vehicle via fastening eyes 8 formed in the bearing block 2, as can be seen in particular from FIG.
  • a standing or hanging accelerator 6 wherein the application of the invention, on an accelerator pedal 6 of a motor vehicle is not limited, however. Rather, it can also be implemented in a brake or clutch pedal.
  • the accelerator pedal 6 is loaded by a restoring force acting against the actuating force, the restoring force being generated by a restoring spring arrangement 10 which contains two coaxial and interleaved coil springs 12, each of which has one end on a pin-shaped spring receptacle 14 on the accelerator pedal 6 and the other end is received and centered on a projecting spring receptacle 16 of a leaf spring 18 extending transversely to the coil springs 12 and consisting of a spring steel.
  • the spring retainer 16. is located in a deformation region 20 of the leaf spring 18, which takes up about a third as viewed from the right end 22 in FIG. 1 and spans a depression 24 in the bearing block 2.
  • the spring-specific parameters including for example, the spring rate of the leaf spring 18 and the span over the recess 24 to be adapted to the respective requirements, for example in such a way that the maximum deflection of the leaf spring 1 8 is approximately 2 mm when the accelerator pedal is fully actuated.
  • At least the ends 22, 26 of the leaf spring 18 are clamped in the bearing block 2. This can preferably take place in that the bearing block 2 is formed by an injection molding made of plastic, into which the ends 22, 26 of the leaf spring 18 are poured or injected. Alternatively, the ends 22, 26 of the leaf spring could also be clamped between two shells of the bearing block 2 braced together.
  • the pedal device 1 also includes a position transmitter which supplies an electrical position signal which is dependent on the accelerator pedal position for higher-level control and regulating devices of the motor vehicle, for example for an engine control unit.
  • a position transmitter which supplies an electrical position signal which is dependent on the accelerator pedal position for higher-level control and regulating devices of the motor vehicle, for example for an engine control unit.
  • at least one deformation or force sensor 28 for generating a deformation or force signal is arranged in the deformation region 20 of the leaf spring 18, and an electronic evaluation unit 30 generates the control signal as a function of the latter.
  • the deformation or force sensor is preferably formed by a strain gauge 28 attached to the side of the leaf spring 18 facing the gas pedal 6, with which the deformation of the deformation area 20 of the leaf spring 18 can be measured when the gas pedal 6 is actuated.
  • the deflection of the leaf spring 18 stretches the strain gauge 28 and thereby changes its electrical resistance.
  • the control signal is generated from this change in resistance in evaluation electronics 30 which is electrically connected to the strain gauge 28 and which is a measure of the extent of the strain gauge 28 and thus a measure of the deflection of the strain gauge
  • Leaf spring 1 8 is due to the actuation of the accelerator pedal 6.
  • the evaluation electronics 30 is not shown in detail and is state of the art.
  • the strain gauge 28 can be integrated in a so-called full-bridge circuit, which is calibrated when the accelerator pedal 6 is not actuated, that is to say without current. This adjustment is disturbed by the change in resistance of the strain gauge 28 as a result of accelerator pedal actuation and a current flows in the bridge branch, which is a measure of the deflection of the accelerator pedal 6.
  • a strain gauge 28 it is also possible to use other sensors with which the deformation of the leaf spring 18 or the force acting on it can be measured, for example piezoelectric sensors.
  • the leaf spring 18 carries the evaluation electronics 30.
  • connection elements 32 which transmit the actuating signal, are electrically conductively connected to a section of the leaf spring 18, on which electrical contact elements 34 for the connection of an electrical plug of a line connection are formed, which transmit the actuating signal to an engine control unit of the motor vehicle.
  • the electrical contact elements are preferably designed as plug tongues 34 projecting parallel from the left end 26 of the leaf spring 18 in FIG. 1 and spaced apart in the transverse direction, which protrude into a plug cavity 36 into which the plug can be inserted
  • the evaluation electronics 30 is arranged in the immediate vicinity of the tabs 34 and outside the deformation area 20 of the leaf spring 18. It is connected to the leaf spring 18 by an injection-molded body 38 made of plastic, which at least partially surrounds both components, ie the evaluation electronics 30 are placed on the side of the leaf spring 18 facing the accelerator pedal 6 and then molded with injection-molded plastic until an injection-molded body 38 is formed which completely encases the evaluation electronics 30 (FIG. 3), so that both components 18, 30 are integrally connected to one another. Furthermore, a section 40 of the tongues 34 facing the evaluation electronics 30 is shown in FIGS Injection molded body 38 is cast in, which in all other respects projects beyond the evaluation electronics 30.
  • the tongues 34 are manufactured, for example, by stamping the leaf spring 18. In order to avoid a short-circuit between the different connections 32 of the plug-in tongues 34 assigned to the evaluation electronics, these are first connected to one another by transverse webs not shown in the figures. After the partial pouring of the tongues 34 into the injection molded body 38, these crosspieces are removed, so that the tongues 34 are also held by the material connection of the injection molded body 38. In order to insulate the signal-carrying tongues 34 from the electrically conductive strain gauge 28, the latter is attached to the leaf spring 1.8 with the interposition of an insulating layer 42 (FIG. 3). Between the evaluation electronics 30 and the strain gauge 28, electrical lead wires 44 are laid, which are connected to the corresponding connections 32 by soldering, bonding or welding.
  • the leaf spring 18 carries the strain gauge 28, the lead wires 44 between the strain gauge 28 and the evaluation electronics 30, and the latter itself. Furthermore, the leaf spring 18 acts as a supporting element for the return spring arrangement 10 of the accelerator pedal 6. Finally, its tabs 34 are for transmitting the Signals of the evaluation electronics 30 are formed by means of a plug connection. Consequently, the leaf spring 18 together with the components 28, 30, 44 held on it forms a preassembled and multifunctional leaf spring module 46, which can be mounted on the bearing block 2 as a whole and is shown in its entirety in FIGS. 3 and 4.
  • this leaf spring module 46 In order to protect this leaf spring module 46 from dirt, corrosion or other external influences, it is covered with a protective layer, with the exception of the tabs 34 to be kept free, which for example through a layer of lacquer or a thermoplastic, sprayed on elastomer layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

L'invention concerne un dispositif pédale (1) de véhicules automobiles comprenant un capteur de position (28, 30) destiné à la pédale (6), ce capteur générant un signal de réglage électrique fonction de la position de la pédale, ainsi qu'un dispositif élastique qui est élastiquement déformable à l'actionnement de la pédale et se présente sous la forme d'au moins un ressort à lames (18). Un capteur de déformation ou de force (28), placé dans la zone de déformation (20) de ce dispositif élastique, permet de générer un signal de déformation ou de force en fonction duquel un dispositif électronique d'évaluation (30) génère le signal de réglage. Selon l'invention, le ressort à lames (18) porte le dispositif électronique d'évaluation (30) dont les bornes de raccordement (32) sont reliées de manière électroconductrice à une section du ressort à lames (18), au moins un contact électrique (34) étant formé sur cette section et servant d'interface pour le raccordement de composants électriques ou éléments conducteurs électriques.
PCT/DE2004/001510 2003-09-08 2004-07-10 Dispositif pedale de vehicules automobiles WO2005026861A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003141277 DE10341277A1 (de) 2003-09-08 2003-09-08 Pedal-Vorrichtung für Kraftfahrzeuge
DE10341277.8 2003-09-08

Publications (2)

Publication Number Publication Date
WO2005026861A2 true WO2005026861A2 (fr) 2005-03-24
WO2005026861A3 WO2005026861A3 (fr) 2005-04-28

Family

ID=34223442

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/001510 WO2005026861A2 (fr) 2003-09-08 2004-07-10 Dispositif pedale de vehicules automobiles

Country Status (2)

Country Link
DE (1) DE10341277A1 (fr)
WO (1) WO2005026861A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054562A1 (fr) * 2009-11-04 2011-05-12 Robert Bosch Gmbh Capteur de course de pédale et unité pédale
EP2360071A1 (fr) * 2008-12-03 2011-08-24 Toyota Jidosha Kabushiki Kaisha Détecteur de quantité d'actionnement
EP2818444A1 (fr) * 2013-06-25 2014-12-31 STILL GmbH Machine de travail mobile dotée d'un dispositif d'actionnement de frein
WO2018046394A1 (fr) * 2016-09-06 2018-03-15 HELLA GmbH & Co. KGaA Pédale, en particulier pédale d'accélérateur
US10343657B2 (en) * 2017-01-24 2019-07-09 Cts Corporation Position and force sensor assembly for vehicle brake pedal
US11953931B2 (en) 2022-02-14 2024-04-09 KSR IP Holdings, LLC Pedal assembly having force sensing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024852A1 (de) * 2008-05-23 2009-11-26 Lucas Automotive Gmbh Kraftübertragungsanordnung für ein Fahrzeugbremssystem
US10175712B2 (en) 2015-05-17 2019-01-08 Cts Corporation Compact vehicle pedal
DE112020002307T5 (de) 2019-05-09 2022-02-17 Cts Corporation Fahrzeugbremspedal mit pedalwiderstandsbaugruppe und kraft-/positionssensor
DE102022212450A1 (de) 2022-11-22 2024-05-23 Robert Bosch Gesellschaft mit beschränkter Haftung Sensoranordnung, Betätigungsvorrichtung, Kraftfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888997A (en) * 1987-03-28 1989-12-26 Wabco Westinghouse Fahrzeugbremsen Gmbh Control input device
DE4024018A1 (de) * 1990-07-28 1992-01-30 Bosch Gmbh Robert Stellungsgeber fuer gaspedal
EP0848313A2 (fr) * 1996-12-14 1998-06-17 Mannesmann VDO Aktiengesellschaft Pédale d'accélération
EP0996049A2 (fr) * 1998-10-19 2000-04-26 Mannesmann VDO Aktiengesellschaft Elément d'actionnement en particulier pédale d'accélération
EP1106416A2 (fr) * 1999-12-06 2001-06-13 Volvo Car Corporation Ensemble pédale de commande

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888997A (en) * 1987-03-28 1989-12-26 Wabco Westinghouse Fahrzeugbremsen Gmbh Control input device
DE4024018A1 (de) * 1990-07-28 1992-01-30 Bosch Gmbh Robert Stellungsgeber fuer gaspedal
EP0848313A2 (fr) * 1996-12-14 1998-06-17 Mannesmann VDO Aktiengesellschaft Pédale d'accélération
EP0996049A2 (fr) * 1998-10-19 2000-04-26 Mannesmann VDO Aktiengesellschaft Elément d'actionnement en particulier pédale d'accélération
EP1106416A2 (fr) * 1999-12-06 2001-06-13 Volvo Car Corporation Ensemble pédale de commande

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360071A1 (fr) * 2008-12-03 2011-08-24 Toyota Jidosha Kabushiki Kaisha Détecteur de quantité d'actionnement
EP2360071A4 (fr) * 2008-12-03 2013-10-02 Toyota Motor Co Ltd Détecteur de quantité d'actionnement
WO2011054562A1 (fr) * 2009-11-04 2011-05-12 Robert Bosch Gmbh Capteur de course de pédale et unité pédale
US9465402B2 (en) 2009-11-04 2016-10-11 Robert Bosch Gmbh Pedal travel transducer and pedal unit
EP2818444A1 (fr) * 2013-06-25 2014-12-31 STILL GmbH Machine de travail mobile dotée d'un dispositif d'actionnement de frein
WO2018046394A1 (fr) * 2016-09-06 2018-03-15 HELLA GmbH & Co. KGaA Pédale, en particulier pédale d'accélérateur
US10343657B2 (en) * 2017-01-24 2019-07-09 Cts Corporation Position and force sensor assembly for vehicle brake pedal
CN110234548A (zh) * 2017-01-24 2019-09-13 Cts公司 用于车辆制动踏板的位置和力传感器组件
US20190291702A1 (en) * 2017-01-24 2019-09-26 Cts Corporation Position and Force Sensor Assembly for Vehicle Brake Pedal
US10654452B2 (en) * 2017-01-24 2020-05-19 Cts Corporation Position and force sensor assembly for vehicle brake pedal
CN110234548B (zh) * 2017-01-24 2022-08-23 Cts公司 用于车辆制动踏板的位置和力传感器组件
US11953931B2 (en) 2022-02-14 2024-04-09 KSR IP Holdings, LLC Pedal assembly having force sensing

Also Published As

Publication number Publication date
DE10341277A1 (de) 2005-03-31
WO2005026861A3 (fr) 2005-04-28

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