WO2016131454A1 - Fluid actuator for haptically perceptible signal at an accelerator pedal - Google Patents

Fluid actuator for haptically perceptible signal at an accelerator pedal Download PDF

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Publication number
WO2016131454A1
WO2016131454A1 PCT/DE2016/200081 DE2016200081W WO2016131454A1 WO 2016131454 A1 WO2016131454 A1 WO 2016131454A1 DE 2016200081 W DE2016200081 W DE 2016200081W WO 2016131454 A1 WO2016131454 A1 WO 2016131454A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
fluid
accelerator pedal
vehicle
pedal
Prior art date
Application number
PCT/DE2016/200081
Other languages
German (de)
French (fr)
Inventor
Franz Schober
Jürgen Stürzer
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Priority to DE112016000128.2T priority Critical patent/DE112016000128A5/en
Publication of WO2016131454A1 publication Critical patent/WO2016131454A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • B60K26/021—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements with means for providing feel, e.g. by changing pedal force characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • B60Y2400/408—Pneumatic actuators

Definitions

  • the invention relates to an actuator for generating a haptic perceptible signal on an accelerator pedal of a vehicle according to the preamble of claim 1.
  • Pedals in vehicles are increasingly provided with an actuator to the driver of the vehicle, a visually perceptible signal in certain traffic situations, such as falling below a minimum distance or a pending gear change or an uneconomic driving style, such as deviating from an optimal speed or torque range signal.
  • DE 100 26 498 A1 mentions that the pulsed movement of the pedal in addition to mechanically and pneumatically, in particular by hydraulic means can be generated.
  • DE 102013209733 A1 discloses a master brake cylinder system in which a so-called simulation chamber for generating a haptic signal on the brake pedal is provided in the brake fluid system.
  • the object of the present invention is to present a suitable embodiment of an actuator for an accelerator pedal, which is inexpensive to implement and on the other hand still able to apply a sufficient counterforce. This object is solved by the features of the independent claims. Advantageous developments of the invention will become apparent from the dependent claims, and combinations and developments of individual features are conceivable with each other.
  • the actuator may be a pneumatic actuator and the fluid air with a positive or negative pressure or a hydraulic actuator and the fluid may be a hydraulic fluid.
  • a generator for overpressure and / or negative pressure in such a fluid is already provided for another function in the vehicle and is supplied via a pressure line of this fluid to the pedal actuator.
  • WO 201 1 029812 A1 already discloses an electrohydraulic brake system for motor vehicles, in which the driver is also readjusted in the so-called "brake-by-wire" mode by the usual brake pedal sensation via corresponding pressure chambers and valves from a pressure medium reservoir ,
  • electro-pneumatic brake systems are known for example from EP 482374 A1, which have a compressed air tank with overpressure. By suitable supply lines and this fluid can be passed to a corresponding actuator on the accelerator pedal.
  • an adaptive hydro-pneumatic damper for motor vehicles for example an adaptive shock absorber system
  • There pressure from a hydraulic system via pressure supply lines is directed to the respective actuators and provided according to an embodiment of this invention, that a corresponding pressure supply to the actuator on the pedal, in particular accelerator pedal, is provided and a haptic perceptible signal is generated by an appropriate control.
  • This concept is now also applied to an accelerator pedal and a corresponding fluid actuator on this accelerator pedal to produce a corresponding haptic perceptible signal on the accelerator pedal.
  • the fluid from the brake pressure system or the adaptive shock absorber system is preferably suitable for this purpose.
  • a controllable valve device which provides the overpressure and / or negative pressure provided by the generator to either the accelerator pedal or the other function, so that feedback or comparable influences on the respective other system can be avoided. It is exploited that usually when activating the brakes in particular, the haptic feedback on the accelerator pedal is unnecessary, that the corresponding foot is indeed on the brake.

Abstract

Described is an actuator for generating a haptically perceptible signal at an accelerator pedal of a motor vehicle, the actuator being a pneumatic or hydraulic fluid actuator operated by overpressure and/or underpressure. A generator which is already present in the vehicle for another function is used to provide the overpressure and/or underpressure in the fluid via a pressure line.

Description

Fluidaktor für haptisch wahrnehmbares Signal an einem Gaspedal  Fluid actuator for haptic-sensitive signal on an accelerator pedal
Die Erfindung betrifft einen Aktor zum Erzeugen eines haptisch wahrnehmbaren Signals an einem Gaspedal eines Fahrzeugs gemäß dem Oberbegriff von Anspruch 1 . The invention relates to an actuator for generating a haptic perceptible signal on an accelerator pedal of a vehicle according to the preamble of claim 1.
Pedale in Fahrzeugen, insbesondere das Gaspedal, werden zunehmend mit einem Aktor versehen, um dem Fahrer des Fahrzeuges ein optisch wahrnehmbare Signal bei bestimmten Verkehrssituationen, beispielsweise dem Unterschreiten eines Mindestabstandes oder einem anstehenden Gangwechsel oder einer unökonomischen Fahrweise, beispielsweise dem Abweichen von einem optimalen Geschwindigkeit-oder Drehmomenten Bereich zu signalisieren.  Pedals in vehicles, in particular the gas pedal, are increasingly provided with an actuator to the driver of the vehicle, a visually perceptible signal in certain traffic situations, such as falling below a minimum distance or a pending gear change or an uneconomic driving style, such as deviating from an optimal speed or torque range signal.
Dazu werden so genannte „Force-Feedback-Pedale", wie beispielsweise in der EP 1375233 B1 oder DE 10 2009 041 361 A1 , üblicherweise mit elektrischen Aktoren versehen, welche auf Basis von rotierenden Elektromotoren oder aber elektromagnetischen Linearantrieben arbeiten. Solche Aktoren ermöglichen eine gezielte Steuerung der Gegenkraft-Kennlinie, sind jedoch entsprechend aufwendig, teuer und weisen einen nicht unerheblichen Stromverbrauch auf.  For this purpose, so-called "force feedback pedals", as for example in EP 1375233 B1 or DE 10 2009 041 361 A1, are usually provided with electric actuators which operate on the basis of rotating electric motors or else electromagnetic linear drives Control of the drag characteristic curve, however, are correspondingly expensive, expensive and have a significant power consumption.
Darüber hinaus sind beispielsweise aus der DE 100 26 048 C2 Pedale mit einer Vibrationseinrichtung bekannt, welche beispielsweise auf Basis piezoelektrischer Aktoren immer noch optisch wahrnehmbare Signale am Pedal erzeugen, ohne dass jedoch die Stärke und Arbeitsamplitude einer solchen Vibrationseinrichtung dafür ausreichen würde, eine direkte Gegenkraft-Rückkopplung über den Arbeitsbereich des Pedal hinweg zu ermöglichen. Allerdings wird bereits erwähnt, dass die Vibrationseinrichtung auch pneumatisch sein könnte, ohne dass nähere Angaben zu einer geeigneten Ausgestaltung gemacht werden.  In addition, for example, from DE 100 26 048 C2 pedals with a vibration device are known, which still produce optically perceptible signals on the pedal, for example, based on piezoelectric actuators, but without the strength and working amplitude of such a vibration device would be sufficient for a direct Gegenkraft- To allow feedback across the working area of the pedal. However, it is already mentioned that the vibration device could also be pneumatic, without giving details of a suitable embodiment.
Ebenso erwähnt die DE 100 26 498 A1 , dass die gepulste bewegung des Pedals neben mechanisch auch pneumatisch, insbesondere auch auf hydraulischem Wege erzeugt werden könne.  Likewise, DE 100 26 498 A1 mentions that the pulsed movement of the pedal in addition to mechanically and pneumatically, in particular by hydraulic means can be generated.
Darüber hinaus ist aus der DE 102013209733 A1 ein Hauptbremszylindersystem bekannt, bei welchem im Bremsflüssigkeitssystem auch eine sogenannte Simulationskammer zum Erzeugen eines haptischen Signals am Bremspedal vorgesehen ist. Die Aufgabe der vorliegenden Erfindung ist es, eine geeignete Ausgestaltung eines Aktors für ein Gaspedal vorzustellen, welcher kostengünstig zu realisieren ist und andererseits dennoch in der Lage ist, auch eine hinreichende Gegenkraft aufzubringen. Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen, wobei auch Kombinationen und Weiterbildungen einzelner Merkmale miteinander denkbar sind. In addition, DE 102013209733 A1 discloses a master brake cylinder system in which a so-called simulation chamber for generating a haptic signal on the brake pedal is provided in the brake fluid system. The object of the present invention is to present a suitable embodiment of an actuator for an accelerator pedal, which is inexpensive to implement and on the other hand still able to apply a sufficient counterforce. This object is solved by the features of the independent claims. Advantageous developments of the invention will become apparent from the dependent claims, and combinations and developments of individual features are conceivable with each other.
Ein wesentlicher Gedanke der Erfindung besteht darin, dass es bereits heute für andere Anwendungen Fluidaktoren gibt, welche eine entsprechend hinreichende Gegenkraft erzeugen und zudem im Kraftfahrzeug Generatoren für Überdruck und/oder Unterdruck vorhanden sind, welche für den Betrieb eines solchen Aktor am Gaspedal mit genutzt werden können, wenngleich natürlich das Gaspedal an sich kein solches Fluidsystem für seinen normalen Betrieb benötigt oder bisher aufwies. Der Aktor kann dabei ein pneumatischer Aktor und das Fluid Luft mit einem Über- oder Unterdruck oder ein hydraulischer Aktor und das Fluid eine Hydraulikflüssigkeit sein.  An essential idea of the invention is that there are already for other applications fluid actuators, which generate a correspondingly sufficient counterforce and also in the motor vehicle generators for overpressure and / or negative pressure are present, which are used for the operation of such an actuator on the accelerator pedal although, of course, the gas pedal itself does not require or have such a fluid system for its normal operation. The actuator may be a pneumatic actuator and the fluid air with a positive or negative pressure or a hydraulic actuator and the fluid may be a hydraulic fluid.
So ist im Fahrzeug bereits für eine andere Funktion ein Generator für Überdruck und/oder Unterdruck in einem solchen Fluid vorgesehen und wird über eine Druckleitung dieses Fluid an den Pedalaktor zugeführt.  Thus, a generator for overpressure and / or negative pressure in such a fluid is already provided for another function in the vehicle and is supplied via a pressure line of this fluid to the pedal actuator.
So sind beispielsweise aus der WO 201 1 029812 A1 bereits eine elektrohydraulische Bremsanlage für Kraftfahrzeuge zu entnehmen, bei welchem dem Fahrzeugführer auch in der sogenannten Betriebsart „Brake-by-Wire" das gewohnte Bremspedalgefühl über entsprechende Druckräume und Ventile aus einem Druckmittel-Vorratsbehälter nachgestellt wird.  For example, WO 201 1 029812 A1 already discloses an electrohydraulic brake system for motor vehicles, in which the driver is also readjusted in the so-called "brake-by-wire" mode by the usual brake pedal sensation via corresponding pressure chambers and valves from a pressure medium reservoir ,
Darüber hinaus sind auch elektro-pneumatische Bremsanlagen beispielsweise aus der EP 482374 A1 bekannt, welche einen Druckluftbehälter mit Überdruck aufweisen. Durch geeignete Zuleitungen kann auch dieses Fluid zu einem entsprechenden Aktor am Gaspedal geleitet werden.  In addition, electro-pneumatic brake systems are known for example from EP 482374 A1, which have a compressed air tank with overpressure. By suitable supply lines and this fluid can be passed to a corresponding actuator on the accelerator pedal.
Ebenso ist beispielsweise aus der EP 633 400 B2 ein adaptiver hydro-pneumatischer Dämpfer für Kraftfahrzeuge, bspw. einem adaptiven Stoßdämpfersystem bekannt. Auch dort wird Druck aus einem Hydrauliksystem über Druckzuleitungen zu den jeweiligen Aktoren geleitet und gemäß einer Ausgestaltung dieser Erfindung vorgesehen, dass eine entsprechende Druckzuleitung auch zum Aktor an dem Pedal, insbesondere Gaspedal, vorgesehen ist und durch eine entsprechende Steuerung ein haptisch wahrnehmbares Signal erzeugt wird. Dieses Konzept wird nun auch auf ein Gaspedal und einen entsprechenden Fluidaktor an diesem Gaspedal angewendet, um ein entsprechend haptisch wahrnehmbares Signal am Gaspedal zu erzeugen. Likewise, for example from EP 633 400 B2, an adaptive hydro-pneumatic damper for motor vehicles, for example an adaptive shock absorber system, is known. There pressure from a hydraulic system via pressure supply lines is directed to the respective actuators and provided according to an embodiment of this invention, that a corresponding pressure supply to the actuator on the pedal, in particular accelerator pedal, is provided and a haptic perceptible signal is generated by an appropriate control. This concept is now also applied to an accelerator pedal and a corresponding fluid actuator on this accelerator pedal to produce a corresponding haptic perceptible signal on the accelerator pedal.
Durch die besonders bevorzugte Nutzung im Kraftfahrzeug bereits vorhandener Fluidsysteme sowie eines Generators für Überdruck und/oder Unterdruck in einem solchen Fluid muss nur eine entsprechende Druckleitung zum Zuführen dieses Fluids an den Pedalaktor vorgesehen werden und können so durchaus leistungsstarke Aktoren realisiert werden.  Due to the particularly preferred use in the motor vehicle already existing fluid systems and a generator for positive pressure and / or negative pressure in such a fluid only a corresponding pressure line for supplying this fluid to the pedal actuator must be provided and can be realized quite powerful actuators.
Vorzugsweise eignet sich dazu das Fluid aus dem Bremsdrucksystem oder dem adaptiven Stoßdämpfersystem.  The fluid from the brake pressure system or the adaptive shock absorber system is preferably suitable for this purpose.
Vorzugsweise ist eine steuerbare Ventilvorrichtung vorgesehen, welche den vom Generator bereitgestellten Überdruck und/oder Unterdruck entweder dem Gaspedal oder der anderen Funktion zur Verfügung stellt, so dass Rückkopplungen oder vergleichbare Einflüsse auf das jeweils andere System vermieden werden können. Dabei wird ausgenutzt, dass in der Regel bei Aktivierung insbesondere der Bremsen die haptische Rückkopplung am Gaspedal entbehrlich ist, dass sich der entsprechende Fuss ja auf der Bremse befindet.  Preferably, a controllable valve device is provided, which provides the overpressure and / or negative pressure provided by the generator to either the accelerator pedal or the other function, so that feedback or comparable influences on the respective other system can be avoided. It is exploited that usually when activating the brakes in particular, the haptic feedback on the accelerator pedal is unnecessary, that the corresponding foot is indeed on the brake.

Claims

Patentansprüche claims
1 ) Aktor zum Erzeugen eines haptisch wahrnehmbaren Signals an einem Gaspedal eines Fahrzeugs, wobei der Aktor ein Fluidaktor ist, welcher mit Überdruck und/oder Unterdruck betrieben ist, dadurch gekennzeichnet, dass der Aktor eine Druckzuleitung aufweist, über welche das Fluid von einem im Fahrzeug bereits für eine andere Funktion vorhandenen Generator für Überdruck und/oder Unterdruck an den Pedalaktor zuführbar ist. 1) actuator for generating a haptic perceptible signal to an accelerator pedal of a vehicle, wherein the actuator is a fluid actuator, which is operated with positive pressure and / or negative pressure, characterized in that the actuator has a pressure supply line, via which the fluid from one in the vehicle already existing for another function generator for overpressure and / or negative pressure to the pedal actuator can be fed.
2) Aktor nach Anspruch 1 , dadurch gekennzeichnet, dass das Fluid aus dem Bremsdrucksystem oder dem adaptiven Stoßdämpfersystem verwendet wird 2) Actuator according to claim 1, characterized in that the fluid from the brake pressure system or the adaptive shock absorber system is used
3) Fahrzeug mit einem Aktor nach einem der vorangehenden Ansprüche, bei welchem für das haptisch wahrnehmbare Signal am Gaspedal ein im Fahrzeug bereits für eine andere Funktion vorhandener Generator für Überdruck und/oder Unterdruck im Fluid und eine Druckleitung zum Zuführen dieses Fluids an den Pedalaktor vorgesehen ist. 3) vehicle with an actuator according to one of the preceding claims, wherein provided for the haptic signal on the accelerator pedal already present in the vehicle for another function generator for overpressure and / or negative pressure in the fluid and a pressure line for supplying this fluid to the pedal actuator is.
4) Fahrzeug nach Anspruch 3, dadurch gekennzeichnet, dass eine steuerbare Ventilvorrichtung vorgesehen ist, welche den vom Generator bereitgestellten Überdruck und/oder Unterdruck entweder dem Gaspedal oder der anderen Funktion zur Verfügung stellt. 4) Vehicle according to claim 3, characterized in that a controllable valve device is provided, which provides the generator provided by the overpressure and / or negative pressure either the accelerator pedal or the other function.
PCT/DE2016/200081 2015-02-17 2016-02-08 Fluid actuator for haptically perceptible signal at an accelerator pedal WO2016131454A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112016000128.2T DE112016000128A5 (en) 2015-02-17 2016-02-08 Fluid actuator for haptic-sensitive signal on an accelerator pedal

Applications Claiming Priority (2)

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DE102015202860.7A DE102015202860A1 (en) 2015-02-17 2015-02-17 Fluid actuator for haptic-sensitive signal on a pedal
DE102015202860.7 2015-02-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017200661A1 (en) 2017-01-17 2018-07-19 Continental Automotive Gmbh Fluid actuator for haptic-sensitive signal on an accelerator pedal
DE102017200662A1 (en) 2017-01-17 2018-07-19 Continental Automotive Gmbh Fluid actuator for haptic-sensitive signal on an accelerator pedal
DE202019000820U1 (en) 2019-02-20 2019-03-25 Kunststoffverarbeitung Hoffmann Gmbh Haptic signaling system in doorknob

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130239A1 (en) * 2018-11-29 2020-06-04 Wabco Gmbh Accelerator pedal arrangement with haptic feedback

Citations (11)

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EP0103678A1 (en) * 1982-09-17 1984-03-28 WABCO Westinghouse Fahrzeugbremsen GmbH Accelerator for road vehicles
EP0482374A1 (en) 1990-10-24 1992-04-29 Robert Bosch Gmbh Electro pneumatic brake system
EP0633400B2 (en) 1993-06-04 2000-03-29 DaimlerChrysler AG Adaptiv hydropneumatic pulsation damper
DE10026498A1 (en) 2000-05-27 2001-11-29 Zahnradfabrik Friedrichshafen Method and device for reporting a signal to the driver of a motor vehicle
DE10026048C2 (en) 2000-05-25 2002-05-02 Daimler Chrysler Ag Haptic signaling device
EP1375233B1 (en) 2002-06-26 2005-10-26 LANDERRETCHE, Alain Accelerator pedal with integrated return force control
DE102009041361A1 (en) 2008-10-22 2010-05-27 Continental Teves Ag & Co. Ohg Method for operating a device for generating an additional restoring force on the accelerator pedal
WO2011029812A1 (en) 2009-09-11 2011-03-17 Continental Teves Ag & Co. Ohg Braking system for motor vehicles and method for operating the same
DE102011108325A1 (en) * 2011-07-22 2012-02-02 Daimler Ag Vehicle i.e. motor car, has influencing device that adjusts resistance corresponding to weight of foot resting on pedal at pressure point in comfort position of pedal for limiting or stopping movement of pedal
DE102011088266A1 (en) * 2011-12-12 2013-06-13 Robert Bosch Gmbh Method and control unit for controlling a haptic accelerator pedal in a motor vehicle based on seat information
DE102013209733A1 (en) 2013-05-24 2014-11-27 Robert Bosch Gmbh Master brake cylinder system and braking system for a vehicle

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Publication number Priority date Publication date Assignee Title
DE102007024885A1 (en) * 2007-05-29 2008-12-04 GM Global Technology Operations, Inc., Detroit Information system for motor vehicle, has sensor device for controlling actuators independent of determined measured values and comprising sensors for detecting one or more state parameters of engine and brake system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103678A1 (en) * 1982-09-17 1984-03-28 WABCO Westinghouse Fahrzeugbremsen GmbH Accelerator for road vehicles
EP0482374A1 (en) 1990-10-24 1992-04-29 Robert Bosch Gmbh Electro pneumatic brake system
EP0633400B2 (en) 1993-06-04 2000-03-29 DaimlerChrysler AG Adaptiv hydropneumatic pulsation damper
DE10026048C2 (en) 2000-05-25 2002-05-02 Daimler Chrysler Ag Haptic signaling device
DE10026498A1 (en) 2000-05-27 2001-11-29 Zahnradfabrik Friedrichshafen Method and device for reporting a signal to the driver of a motor vehicle
EP1375233B1 (en) 2002-06-26 2005-10-26 LANDERRETCHE, Alain Accelerator pedal with integrated return force control
DE102009041361A1 (en) 2008-10-22 2010-05-27 Continental Teves Ag & Co. Ohg Method for operating a device for generating an additional restoring force on the accelerator pedal
WO2011029812A1 (en) 2009-09-11 2011-03-17 Continental Teves Ag & Co. Ohg Braking system for motor vehicles and method for operating the same
DE102011108325A1 (en) * 2011-07-22 2012-02-02 Daimler Ag Vehicle i.e. motor car, has influencing device that adjusts resistance corresponding to weight of foot resting on pedal at pressure point in comfort position of pedal for limiting or stopping movement of pedal
DE102011088266A1 (en) * 2011-12-12 2013-06-13 Robert Bosch Gmbh Method and control unit for controlling a haptic accelerator pedal in a motor vehicle based on seat information
DE102013209733A1 (en) 2013-05-24 2014-11-27 Robert Bosch Gmbh Master brake cylinder system and braking system for a vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017200661A1 (en) 2017-01-17 2018-07-19 Continental Automotive Gmbh Fluid actuator for haptic-sensitive signal on an accelerator pedal
DE102017200662A1 (en) 2017-01-17 2018-07-19 Continental Automotive Gmbh Fluid actuator for haptic-sensitive signal on an accelerator pedal
DE202019000820U1 (en) 2019-02-20 2019-03-25 Kunststoffverarbeitung Hoffmann Gmbh Haptic signaling system in doorknob

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DE102015202860A1 (en) 2016-08-18
DE112016000128A5 (en) 2017-07-06

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