DE102005035872A1 - Electric motor e.g. hollow shaft electric motor, operated adjusting unit for double track motor vehicle, has adjusting drive transferable on two wheels over threaded spindle, where electric motor is designed as hollow shaft electric motor - Google Patents

Electric motor e.g. hollow shaft electric motor, operated adjusting unit for double track motor vehicle, has adjusting drive transferable on two wheels over threaded spindle, where electric motor is designed as hollow shaft electric motor Download PDF

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Publication number
DE102005035872A1
DE102005035872A1 DE200510035872 DE102005035872A DE102005035872A1 DE 102005035872 A1 DE102005035872 A1 DE 102005035872A1 DE 200510035872 DE200510035872 DE 200510035872 DE 102005035872 A DE102005035872 A DE 102005035872A DE 102005035872 A1 DE102005035872 A1 DE 102005035872A1
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DE
Germany
Prior art keywords
electric motor
threaded spindle
hollow shaft
transferable
wheels
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Withdrawn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
DE200510035872
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German (de)
Inventor
Alois Fürstenberger
Reinhard Simkovics
Thomas Weidner
Martin Grieshaber
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE200510035872 priority Critical patent/DE102005035872A1/en
Publication of DE102005035872A1 publication Critical patent/DE102005035872A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0442—Conversion of rotational into longitudinal movement
    • B62D5/0451—Roller spindle drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D17/00—Means on vehicles for adjusting camber, castor, or toe-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0421—Electric motor acting on or near steering gear
    • B62D5/0424—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel
    • B62D5/0427—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel the axes being coaxial

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

The unit has an adjusting drive transferable on two wheels over a translatory movable, non-self-locking threaded spindle (3), where an electric motor is designed as a hollow shaft electric motor (2) and surrounds the threaded spindle. A locking unit (9) is provided for blocking the threaded spindle, where the threaded spindle is a planetary roller spindle drive. The locking unit operates directly or indirectly on a rotor (2a) of the electric motor by the threaded spindle, where the locking unit is formed as an electromagnetic operated brake. An independent claim is also included for a double track motor vehicle including an adjusting unit.

Description

Die Erfindung betrifft eine elektromotorisch betätigte Stelleinheit für die beiden Räder einer Achse eines zweispurigen Kraftfahrzeugs, mit der über eine einzige translatorisch verlagerbare, nicht selbsthemmende Gewindespindel eine Verstellbewegung auf die Räder übertragbar ist. Eine derartige Verstelleinheit kann dabei insbesondere zur Einstellung von Spur oder Sturz der beiden Räder zusammen zum Einsatz kommen.The The invention relates to an electromotive actuated actuator for the two Wheels one Axis of a two-lane motor vehicle, with over a only translationally displaceable, non-self-locking threaded spindle an adjustment to the wheels transferable is. Such an adjustment can in particular for Setting track or camber of the two wheels used together.

Für diesen genannten Einsatz sind einerseits relativ kleine Verstellwege erforderlich und andererseits soll eine äußerst genaue Positionierung möglich sein. Aufgrund der gemeinsamen Einwirkung auf die beiden Räder wird die Stelleinheit vorzugsweise im Mittelbereich des Kraftfahrzeugs angeordnet, wo üblicherweise relativ wenig Bauraum zur Verfügung steht.For this use mentioned on the one hand relatively small adjustment paths are required and on the other hand, a very accurate Positioning be possible. Due to the joint action on the two wheels is the adjusting unit preferably in the central region of the motor vehicle arranged where usual relatively little space is available.

Eine Stelleinheit, die all diesen Anforderungen genügt bzw. genügen kann, soll hiermit aufgezeigt werden (= Aufgabe der vorliegenden Erfindung).A Actuator that meets or meets all these requirements, is hereby shown be (= object of the present invention).

Die Lösung dieser Aufgabe ist für eine elektromotorisch betätigte Stelleinheit für die beiden Räder einer Achse eines zweispurigen Kraftfahrzeugs, mit der über eine einzige translatorisch verlagerbare, nicht selbsthemmende Gewindespindel eine Verstellbewegung auf die Räder übertragbar ist, dadurch gekennzeichnet, dass der Elektromotor als Hohlwellenmotor ausgebildet ist und die Gewindespindel umgibt und dass eine Hemmeinheit zum Blockieren der Gewindespindel vorgesehen ist. Vorzugsweise ist die Gewindespindel eine Planetenwälzgewindespindel und es wirkt die Hemmeinheit direkt oder indirekt auf den Rotor des Elektromotors ein und ist als elektromagnetisch betätigte Bremse ausgebildet.The solution this task is for an electric motor operated Actuator for the two wheels an axle of a two-lane motor vehicle with which a only translationally displaceable, non-self-locking threaded spindle an adjustment to the wheels transferable is, characterized in that the electric motor as a hollow shaft motor is formed and surrounds the threaded spindle and that an inhibiting unit is provided for blocking the threaded spindle. Preferably the threaded spindle a Planetenwälzgewindespindel and it works the inhibition unit directly or indirectly on the rotor of the electric motor and is designed as an electromagnetically actuated brake.

Die beigefügte Prinzipskizze zeigt in einem Querschnitt ein bevorzugtes Ausführungsbeispiel in stark abstrahierter Darstellung.The attached Schematic diagram shows in a cross section a preferred embodiment in a highly abstracted representation.

Dabei ist mit der Bezugsziffer 1 ein Gehäuse bezeichnet, das die wesentlichen Elemente der Stelleinheit aufnimmt, nämlich u.a. einen Hohlwellen-Elektromotor 2, durch letztlich eine Gewindespindel 3 längs deren Achse 4 verschieben kann. Diese Gewindespindel 3 ist an ihren Enden mit Anschlussstücken 6 versehen, an die jeweils eine nicht dargestellte Strebe oder dgl. angelenkt sein kann, die mit ihrem anderen Ende geeignet an einem Radträger oder dgl. eines zweispurigen Kraftfahrzeugs derart angelenkt ist, dass durch Verschieben der Gewindespindel 3 längs der Achse 4 die Spur oder der Sturz der beiden Räder einer Achse dieses Fahrzeugs geändert bzw. eingestellt werden kann. Über diese Anschlusstücke 6, die vorzugsweise drehfest und nur in Richtung der Achse 4 verschiebbar geführt sind, ist ferner die Gewindespindel 3 über drehgesicherte Linearlager 5 im Gehäuse gelagert.It is with the reference number 1 denotes a housing which receives the essential elements of the actuator, namely, inter alia, a hollow shaft electric motor 2 , by ultimately a threaded spindle 3 along its axis 4 can move. This threaded spindle 3 is at its ends with fittings 6 provided, to each of which a strut, not shown, or the like. Can be articulated, which is suitably hinged at its other end to a wheel or the like. A two-lane motor vehicle such that by moving the threaded spindle 3 along the axis 4 the track or the camber of the two wheels of an axle of this vehicle can be changed or adjusted. About these connectors 6 , preferably non-rotatable and only in the direction of the axis 4 are slidably guided, is also the threaded spindle 3 via non-rotating linear bearings 5 stored in the housing.

Über ein nicht selbsthemmendes Getriebe 7 in Form eines stark über- bzw. untersetzenden Planetengetriebes spezieller Bauart steht die Gewindespindel 3 mit dem Rotor 2a des Hohlwellen-Elektromotors 2 in Eingriff. Bei dieser speziellen Getriebe-Bauart handelt es sich um eine sog. Planetenwälzgewindespindel, wobei die Gewindespindel 3, das Getriebe 7 sowie der Hohlwellen-Elektromotor wie ersichtlich koaxial derart angeordnet sind, dass das Getriebe 7 innerhalb des Rotors 2a des Hohlwellen-Elektromotors 2 und die Gewindespindel 3 innerhalb des Getriebes 7 liegt. Dabei ist das mit dem Rotor 2a zusammenwirkende Element 7a des Getriebes 7 über Wälzlager 8 im Gehäuse 1 drehbar gelagert. Durch die Verwendung eines Hohlwellen-Elektromotors ist eine äußerst kompakte, Bauraum sparende Anordnung geschaffen, während das Getriebe mit nicht selbsthemmender Planetenwälzgewindelspindel einen bestmöglichen Wirkungsgrad gewährleistet, d.h. die vom Elektromotor bereitzustellenden Drehmoment-Anlaufspitzen können hierdurch gering gehalten werden.About a non-self-locking gear 7 in the form of a strong over or under-reducing planetary gear special design is the threaded spindle 3 with the rotor 2a the hollow shaft electric motor 2 engaged. This special type of transmission is a so-called planetary roller screw, wherein the threaded spindle 3 , The gear 7 as well as the hollow shaft electric motor as can be seen coaxially arranged such that the transmission 7 inside the rotor 2a the hollow shaft electric motor 2 and the threaded spindle 3 within the transmission 7 lies. It is with the rotor 2a interacting element 7a of the transmission 7 over rolling bearings 8th in the case 1 rotatably mounted. By using a hollow-shaft electric motor, an extremely compact, space-saving arrangement is created, while the transmission with non-self-locking Planetenwälzgewindelspindel ensures the best possible efficiency, ie, to be provided by the electric motor torque run-up tips can be kept low.

Da das Getriebe 7 bzw. allgemein die Gewindespindel 3 insbesondere im Hinblick auf die Realisierung eines hohen Über- bzw. Untersetzungsverhältnisses, aufgrund dessen die Einstellung von Spur bzw. Sturz an den Rädern des Kraftfahrzeugs äußerst exakt erfolgen kann, nicht selbsthemmend ausgebildet ist, ist eine eigenständige sog. Hemmeinheit 9 zum Blockieren der Gewindespindel 3 vorgesehen. Mit Hilfe dieser Hemmeinheit 9, die direkt oder über die Gewindespindel 3 oder das Getriebe 7 indirekt auf den Rotor 2a des Hohlwellen-Elektromotors 2 einwirken kann und vorzugsweise als elektromagnetisch betätigte Bremse ausgebildet ist, kann die Gewindespindel 3 somit einfach und insbesondere sicher in einer gewünschten Position festgehalten werden.Because the gear 7 or in general the threaded spindle 3 Especially with regard to the realization of a high over- or reduction ratio, due to which the adjustment of lane or camber on the wheels of the motor vehicle can be extremely accurate, is not self-locking, is an independent so-called. Hemmeinheit 9 for blocking the threaded spindle 3 intended. With the help of this inhibition unit 9 directly or through the threaded spindle 3 or the gearbox 7 indirectly on the rotor 2a the hollow shaft electric motor 2 can act and is preferably designed as an electromagnetically actuated brake, the threaded spindle 3 thus easily and in particular securely held in a desired position.

Vorgesehen ist ferner eine geeignete Sensorik 10, mit der die jeweilige Position der Gewindespindel 3 mit höchster Genauigkeit registriert werden kann, so dass die Hemmeinheit 9 sowie der Hohlwellen-Elektromotor 2 von einer nicht dargestellten elektronischen Steuereinheit geeignet angesteuert werden können, um die Gewindespindel 3 wie gewünscht zu platzieren und somit Sturz oder Spur an den dieser Stelleinheit zugeordneten Rädern des Kraftfahrzeugs wie gewünscht einzustellen. Vorzugsweise handelt es sich bei dieser Sensorik 10 um einen Linearsensor, wobei noch darauf hingewiesen sei, dass durchaus eine Vielzahl von Details abweichend von obigen Erläuterungen gestaltet sein kann, ohne den Inhalt der Patentansprüche zu verlassen.Provided is also a suitable sensor 10 , with which the respective position of the threaded spindle 3 can be registered with the highest accuracy, so that the inhibition unit 9 as well as the hollow shaft electric motor 2 can be suitably controlled by an electronic control unit, not shown, to the threaded spindle 3 to place as desired and thus set camber or track as desired on the wheels of the motor vehicle assigned to this control unit. virtue wise, this is the sensor 10 to a linear sensor, wherein it should be noted that quite a variety of details may be deviated from the above explanations, without departing from the content of the claims.

Vorzugsweise kann an einem zweispurigen Kraftfahrzeug eine solche Stelleinheit als Aktuator zum Lenken der Hinterräder zum Einsatz kommen, während das Lenksystem der Fahrzeug-Vorderräder als Überlagerungslenkung ausgebildet ist. Die Fahrdynamik des Fahrzeugs lässt sich damit erheblich steigern, was u.a. auch den systemimmanenten Eigenschaften der vorgeschlagenen Stelleinheit zu verdanken ist.Preferably can on a two-lane motor vehicle such an actuator be used as an actuator for steering the rear wheels, while the Steering system of the vehicle front wheels as superposition steering is trained. The driving dynamics of the vehicle can thus be significantly increased, what u.a. also the inherent properties of the proposed Actuation unit is due.

Claims (4)

Elektromotorisch betätigte Stelleinheit für die beiden Räder einer Achse eines zweispurigen Kraftfahrzeugs, mit der über eine einzige translatorisch verlagerbare, nicht selbsthemmende Gewindespindel (3) eine Verstellbewegung auf die Räder übertragbar ist, wobei der Elektromotor als Hohlwellenmotor (2) ausgebildet ist und die Gewindespindel (3) umgibt und eine Hemmeinheit (9) zum Blockieren der Gewindespindel (3) vorgesehen ist.Electromotive actuated actuating unit for the two wheels of an axle of a two-lane motor vehicle, with a single translationally displaceable, non-self-locking threaded spindle ( 3 ) an adjusting movement is transferable to the wheels, wherein the electric motor as a hollow shaft motor ( 2 ) is formed and the threaded spindle ( 3 ) and an inhibition unit ( 9 ) for blocking the threaded spindle ( 3 ) is provided. Stelleinheit nach Anspruch 1, dadurch gekennzeichnet, dass die Gewindespindel eine Planetenwälzgewindespindel ist.Actuator according to Claim 1, characterized that the threaded spindle is a Planetenwälzgewindespindel. Stelleinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hemmeinheit (9) direkt oder über die Gewindespindel (3) indirekt auf den Rotor (2a) des (2) Elektromotors einwirkt und als elektromagnetisch betätigte Bremse ausgebildet ist.Actuating unit according to claim 1 or 2, characterized in that the inhibiting unit ( 9 ) directly or via the threaded spindle ( 3 ) indirectly on the rotor ( 2a ) of ( 2 ) Electric motor acts and is designed as an electromagnetically actuated brake. Zweispuriges Kraftfahrzeug mit einer Stelleinheit nach einem der vorangegangenen Ansprüche als Aktuator zum Lenken der Hinterräder, während das Lenksystem der Fahrzeug-Vorderräder als Überlagerungslenkung ausgebildet ist.Two-lane motor vehicle with one actuator according to one of the preceding claims as an actuator for steering the rear wheels, while that Steering system of the vehicle front wheels as superposition steering is trained.
DE200510035872 2005-07-30 2005-07-30 Electric motor e.g. hollow shaft electric motor, operated adjusting unit for double track motor vehicle, has adjusting drive transferable on two wheels over threaded spindle, where electric motor is designed as hollow shaft electric motor Withdrawn DE102005035872A1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007234A1 (en) * 2007-02-14 2008-08-21 Audi Ag Electromechanical adjusting device for wheel suspensions of motor vehicles
JP2012020646A (en) * 2010-07-14 2012-02-02 Jtekt Corp Steering device for vehicle
EP2157008A3 (en) * 2008-08-22 2012-06-27 Audi AG Steering actuator for a rear wheel suspension
DE102012212608A1 (en) 2012-07-18 2014-02-06 Schaeffler Technologies AG & Co. KG Actuator for purely, electronically controlled electro-mechanical steering of e.g. tractor, has hollow shaft that is adapted to enclose spindle nut completely, by rotation of hollow shaft by axial movement of threaded spindle
DE102017124388A1 (en) 2017-07-03 2019-01-03 Schaeffler Technologies AG & Co. KG Electromechanical steering actuator
DE102018209820A1 (en) * 2018-06-18 2019-12-19 Zf Friedrichshafen Ag Spindle for an actuator of a steer-by-wire steering and steer-by-wire steering
DE102018209819A1 (en) 2018-06-18 2019-12-19 Zf Friedrichshafen Ag Spindle drive for steer-by-wire steering and steer-by-wire steering
DE102019200178A1 (en) * 2019-01-09 2020-07-09 Zf Friedrichshafen Ag Steering axle for an industrial truck and industrial truck with the steering axle
DE102020108459A1 (en) 2020-03-27 2021-09-30 Schaeffler Technologies AG & Co. KG Electromechanical steering actuator and axle of a motor vehicle

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DE3629453A1 (en) * 1986-08-29 1988-03-10 Forkardt Paul Gmbh ELECTROMECHANICAL DEVICE FOR GENERATING AN AXIAL FORCE FOR THE OPERATION OF TENSIONERS
DE3735517A1 (en) * 1986-10-20 1988-05-26 Honda Motor Co Ltd DEVICE FOR STEERING THE REAR WHEELS FOR A VEHICLE WITH STEERING REAR WHEELS
DE3836255C2 (en) * 1988-10-25 1990-09-06 Adam Opel Ag, 6090 Ruesselsheim, De
DE10011140A1 (en) * 1999-04-19 2000-11-02 Thyssen Krupp Automotive Ag High efficiency tubular, electrically assisted power steering system has rotation-translation converter for axially coupling assisting force to push rod with threaded part in fixed rotatable nut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629453A1 (en) * 1986-08-29 1988-03-10 Forkardt Paul Gmbh ELECTROMECHANICAL DEVICE FOR GENERATING AN AXIAL FORCE FOR THE OPERATION OF TENSIONERS
DE3735517A1 (en) * 1986-10-20 1988-05-26 Honda Motor Co Ltd DEVICE FOR STEERING THE REAR WHEELS FOR A VEHICLE WITH STEERING REAR WHEELS
DE3836255C2 (en) * 1988-10-25 1990-09-06 Adam Opel Ag, 6090 Ruesselsheim, De
DE10011140A1 (en) * 1999-04-19 2000-11-02 Thyssen Krupp Automotive Ag High efficiency tubular, electrically assisted power steering system has rotation-translation converter for axially coupling assisting force to push rod with threaded part in fixed rotatable nut

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007234A1 (en) * 2007-02-14 2008-08-21 Audi Ag Electromechanical adjusting device for wheel suspensions of motor vehicles
EP1958800A3 (en) * 2007-02-14 2009-12-02 Audi Ag Electromechanical control device for the wheel suspension in motor vehicles
EP2157008A3 (en) * 2008-08-22 2012-06-27 Audi AG Steering actuator for a rear wheel suspension
JP2012020646A (en) * 2010-07-14 2012-02-02 Jtekt Corp Steering device for vehicle
DE102012212608A1 (en) 2012-07-18 2014-02-06 Schaeffler Technologies AG & Co. KG Actuator for purely, electronically controlled electro-mechanical steering of e.g. tractor, has hollow shaft that is adapted to enclose spindle nut completely, by rotation of hollow shaft by axial movement of threaded spindle
DE102017124388A1 (en) 2017-07-03 2019-01-03 Schaeffler Technologies AG & Co. KG Electromechanical steering actuator
DE102018209820A1 (en) * 2018-06-18 2019-12-19 Zf Friedrichshafen Ag Spindle for an actuator of a steer-by-wire steering and steer-by-wire steering
DE102018209819A1 (en) 2018-06-18 2019-12-19 Zf Friedrichshafen Ag Spindle drive for steer-by-wire steering and steer-by-wire steering
WO2019242963A1 (en) 2018-06-18 2019-12-26 Zf Friedrichshafen Ag Steer-by-wire steering system having a spindle drive
US11623682B2 (en) 2018-06-18 2023-04-11 Zf Friedrichshafen Ag Steer-by-wire steering system having a spindle drive
DE102019200178A1 (en) * 2019-01-09 2020-07-09 Zf Friedrichshafen Ag Steering axle for an industrial truck and industrial truck with the steering axle
DE102020108459A1 (en) 2020-03-27 2021-09-30 Schaeffler Technologies AG & Co. KG Electromechanical steering actuator and axle of a motor vehicle

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