DE102005031036A1 - Separated motor vehicle stabilizer, has swiveling motor gear that includes two threaded screws with different thread pitches, where one of threaded screws makes impact on spindle nut that acts as gear output unit - Google Patents

Separated motor vehicle stabilizer, has swiveling motor gear that includes two threaded screws with different thread pitches, where one of threaded screws makes impact on spindle nut that acts as gear output unit Download PDF

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Publication number
DE102005031036A1
DE102005031036A1 DE200510031036 DE102005031036A DE102005031036A1 DE 102005031036 A1 DE102005031036 A1 DE 102005031036A1 DE 200510031036 DE200510031036 DE 200510031036 DE 102005031036 A DE102005031036 A DE 102005031036A DE 102005031036 A1 DE102005031036 A1 DE 102005031036A1
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Prior art keywords
spindle nut
gear
motor
threaded screws
stabilizer
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DE200510031036
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German (de)
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Reinhard Simkovics
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE200510031036 priority Critical patent/DE102005031036A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B60G21/0553—Mounting means therefor adjustable
    • B60G21/0558—Mounting means therefor adjustable including means varying the stiffness of the stabiliser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The stabilizer has a swiveling motor gear (3) that includes two threaded screws (6, 7) with different thread pitches. The threaded screw (6) with a small pitch is driven by an electric motor, and a spindle nut (10) transfers its translative movement to the threaded screw (7) with higher thread pitch. The screw (7) makes an impact on a spindle nut (11) that acts as a gear output unit, where the nut (11) is rotatably and movably mounted.

Description

Die Erfindung betrifft einen geteilten Kraftfahrzeugstabilisator mit einem eingebauten elektrischen Schwenkmotor nach dem Oberbegriff des ersten Anspruchs.The The invention relates to a split motor vehicle stabilizer a built-in electric swivel motor according to the preamble of the first claim.

Es ist bereits bekannt, einen Kraftfahrzeugstabilisator in eine erste, der Aufhängung des linken Rades einer Fahrzeug-Achse zugeordnete Stabilisatorhälfte und in eine zweite, der Aufhängung des rechten Rades dieser Fahrzeug-Achse zugeordnete Stabilisatorhälfte zu unterteilen. Sind diese Stabilisatorhälften um deren gemeinsame Längsachse gegeneinander verdrehbar, kann gegenüber Fahrwerken mit einstückigem Stabilisator eine deutlich gesteigerte Wankstabilität erreicht werden, wenn zwischen den beiden Stabilisatorhälften ein geeigneter Schwenkmotor vorgesehen ist, der aufgrund einer geeigneten Ansteuerung diese Stabilisatorhälften bedarfsgerecht gegeneinander verdreht.It is already known, a motor vehicle stabilizer in a first, the suspension the left wheel of a vehicle axle associated stabilizer half and in a second, the suspension the right wheel of this vehicle axle associated stabilizer half divide. These stabilizer halves are about their common longitudinal axis can be rotated against each other, compared to chassis with one-piece stabilizer a significantly increased roll stability can be achieved if between the two stabilizer halves a suitable pivot motor is provided, which due to a suitable Activation of these stabilizer halves as required twisted against each other.

Ein elektromechanischer Schwenkmotor umfasst mindestens einen Elektromotor und ein mechanisches Getriebe. Damit erhält man einen Stabilisator, dessen beide Stabilisatorhälften, die durch den elektromechanischen Schwenkmotor miteinander verbunden sind, durch diesen gezielt zueinander verdreht werden können, damit ein gewünschtes Stabilisatormoment erzeugt wird, welches dann das Wanken des Fahrzeug-Aufbaus verhindert.One Electromechanical swivel motor comprises at least one electric motor and a mechanical transmission. This gives you a stabilizer, whose two stabilizer halves, which are interconnected by the electromechanical swing motor are, by this targeted to each other can be twisted, so a desired one Stabilizer torque is generated, which then the shaking of the vehicle body prevented.

Bei elektrischen Schwenkmotoren mit Kurvenrollengetriebe zur Wankregelung wird dieses über eine vom Elektromotor angetriebene Gewindespindel durch deren Spindelmutter beaufschlagt. Die DE 102 33 499 A1 beschreibt einen geteilten Stabilisator mit einem solchen eingebauten elektrischen Schwenkmotor zur Wankregelung. Der Schwenkmotor besteht aus Elektromotor und Kurvenrollenuntersetzungsgetriebe. Ein solcher Schwenkmotor, mit einem schnell drehenden Elektromotor und einem Kurvenrollen untersetzungsgetriebe hoher Übersetzung, um ein hohes Stellmoment erreichen zu können, entwickelt ein bestimmtes Geräuschniveau aufgrund des auftretenden Spiels im Kurvenrollenuntersetzungsgetriebe. Die Alternativen, aufgrund der erforderlichen hohen Übersetzung, ein drei- bis vierstufiges Planetengetriebe oder ein Wolfromgetriebe, sind nicht einfach preiswert herzustellen.In electric swivel motors with cam roller gear for roll control this is acted upon by a driven by the electric motor threaded spindle through the spindle nut. The DE 102 33 499 A1 describes a split stabilizer with such a built-in electric swivel motor for roll control. The swing motor consists of electric motor and cam roller reduction gear. Such a swing motor, with a high-speed electric motor and a cam reduction gear high ratio to achieve a high actuating torque can develop a certain noise level due to the occurring backlash in the cam roller reduction gear. The alternatives, due to the required high gear ratio, a three- to four-stage planetary gear or a Wolfromgetriebe are not easy to produce inexpensively.

Durch diese hohe Übersetzung von i = 100 bis i = 150 entsteht abtriebsseitig ein sehr hohes Trägheitsmoment, das sich in einer niedrigen Eigenfrequenz der Rotationsträgheiten auf den Stabilisatorhälften widerspiegelt, die im geforderten Arbeitsbereich des Schwenkmotors liegt. Bei mehrstufigen Planetengetrieben nimmt das Getriebespiel und die Länge mit jeder Stufe zu. Durch die hohe Übersetzung muss der Motor sehr schnell drehen und beschleunigen. Dadurch wird viel elektrische Leistung zur Beschleunigung der sich bewegenden Teile verbraucht.By this high translation from i = 100 to i = 150 the output side produces a very high moment of inertia, this results in a low natural frequency of the rotational inertia on the stabilizer halves reflected in the required working range of the swing motor lies. In multi-stage planetary gearboxes, the gearbox clearance decreases and the length with each stage too. Due to the high ratio of the engine must be very turn and accelerate quickly. This will be a lot of electrical Power consumed to accelerate the moving parts.

Die bekannten Getriebe mit sehr hoher Übersetzung haben weiterhin den Nachteil eines schlechten, tendenziell mit zunehmender Übersetzung abnehmenden Wirkungsgrades.The known transmission with very high translation continue to have the disadvantage of a bad, tends to increase with translation decreasing efficiency.

Es ist Aufgabe der Erfindung, einen elektrischen Schwenkmotor für einen geteilten Stabilisator zur Wankregelung für ein Kraftfahrzeug bereitzustellen, bei dem obige Nachteile vermieden werden.It Object of the invention is an electric swing motor for a to provide a split stabilizer for roll control for a motor vehicle, in which the above disadvantages are avoided.

Die Aufgabe wird durch die Merkmale des ersten Anspruchs gelöst. Bevorzugte Ausführungen der Erfindung beschreiben die abhängigen Ansprüche.The Task is solved by the features of the first claim. preferred Executions of the Invention describe the dependent Claims.

Nach der Erfindung besitzt ein geteilter Kraftfahrzeugstabilisator einen eingebauten Schwenkmotor zur Wankregelung, der mindestens aus einem Verstellantrieb aus Elektromotor und Schwenkmotorgetriebe und aus einem Gehäuse besteht. Dabei ist mindestens ein Gehäuseteil mit einem dazugehörigen Stabilisatorteil zur Drehmomentübertragung verbunden. Der Schwenkmotor ist dadurch gekennzeichnet, dass das Schwenkmotorgetriebe mindestens zwei Gewindespindeln mit unterschiedlicher Gewindesteigung umfasst, wobei eine erste Gewindespindel mit geringerer Steigung vom Elektromotor angetrieben wird und deren Spindelmutter ihre translatorische Bewegung auf eine zweite Gewindespindel mit größerer Gewindesteigung überträgt. Die zweite Gewindespindel beaufschlagt wiederum eine weitere Spindelmutter, die ausschließlich rotatorisch beweglich im Gehäuse gelagert ist.To The invention has a shared motor vehicle stabilizer a built-in swivel motor for roll control, the at least one adjustment consists of electric motor and swivel motor gear and a housing. Here is at least one housing part with an associated Stabilizer part for torque transmission connected. The swing motor is characterized in that the Swivel motor gear at least two threaded spindles with different Thread pitch includes, with a first threaded spindle with less Slope is driven by the electric motor and its spindle nut their translational movement with a second threaded spindle larger thread pitch transmits. The second Threaded spindle in turn acts on another spindle nut, the exclusively rotationally movable in the housing is stored.

Vorteilhafterweise kann ein solches Schwenkmotorgetriebe über den Gewindesteigungsunterschied zwischen erster und zweiter Gewindespindel mit einer sehr großen Übersetzung ausgestattet werden, was am Abtrieb ein großes Drehmoment bei geringer Drehzahl ergibt. Das quasi spielfrei bei geringer Reibung arbeitende Schwenkmotorgetriebe ist auch sehr geräuscharm.advantageously, such a swivel motor gearbox may be above the thread pitch difference between first and second threaded spindle with a very large translation be equipped, which at the output a large torque at low Revolutions. The almost free of play working at low friction Swing motor gear is also very quiet.

Bevorzugte Ausführungsbeispiele sind zum Beispiel dadurch gekennzeichnet, dass, die Spindelmutter mit der zweiten Gewindespindel fest verbunden oder einstückig ausgebildet ist. Dadurch entsteht ein einfacher Aufbau des Schwenkmotorgetriebes.preferred embodiments For example, characterized in that, the spindle nut firmly connected to the second threaded spindle or integrally formed is. This results in a simple construction of the swing motor gear.

Wenn die Spindelmutter drehfest mit mindestens einem weiteren Gehäuseteil verbunden ist, das wiederum drehfest mit einem weiteren dazugehörigen Stabilisatorteil verbunden ist, wird der Kraftfluss zwischen den beiden Sabilisatorteilen auf einfache Weise für große Kräfte bzw. Drehmomente gewährleistet, was potentielle Versagensmöglichkeiten vermindert und hilft, die Herstellkosten gering zu halten. Kosteneinsparungen entstehen durch das einfache Getriebe mit hoher Übersetzung und durch den in wenigen Arbeitsschritten aufzubauenden Schwenkmotor mit einfachem Aufbau aus wenigen Teilen.When the spindle nut is non-rotatably connected to at least one further housing part, which in turn rotatably associated with another affiliated stabilizer part is connected, the power flow between the two Sabilisatorteilen is ensured in a simple manner for large forces or torques, which reduces potential failure possibilities and helps to keep the manufacturing costs low. Cost savings result from the simple gearbox with high gear ratio and the swivel motor, which can be assembled in just a few steps, with a simple structure consisting of just a few parts.

Bei einer vorteilhaften Ausführung der Erfindung ist mindestens ein Antrieb einer Gewindespindel als Kugelgewindetrieb ausgebildet. Ein solcher Spindelantrieb kann vorteilhafterweise spielfrei vorgespannt werden. Als Alternative können aber auch Planetengewinde- oder Trapezgewindespindeln oder vergleichbare Lineareinheiten eingesetzt werden.at an advantageous embodiment the invention is at least one drive a threaded spindle as Ball screw formed. Such a spindle drive can advantageously be preloaded without play. Alternatively, planetary thread or trapezoidal thread spindles or comparable linear units used become.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der nachfolgenden Beschreibung und der zugehörigen Zeichnung näher dargestellt. Dazu zeigt die einzige Figur in einer Schnittdarstellung einen erfindungsgemäßen elektrischen Schwenkmotor für einen Kraftfahrzeugstabilisator zum Verdrehen zweier Stabilisatorhälften gegeneinander.One preferred embodiment The invention is described in the following description and the accompanying drawings shown in more detail. For this purpose, the single figure in a sectional view shows an electrical according to the invention Swing motor for a motor vehicle stabilizer for rotating two stabilizer halves against each other.

Ein in einen geteilten Kraftfahrzeugstabilisator 5, 5' eingebauter elektrischer Schwenkmotor 1 ist in der Figur dargestellt, umfassend einen Elektromotor mit Stator 8 und Rotor 9 als Verstellantrieb und ein mechanisches Schwenkmotorgetriebe 3. Die Getriebeübersetzung des Schwenkmotorgetriebes 3 ist konstant. Die Dynamik des Gesamtsystems ist dabei maßgeblich durch die Getriebeübersetzung, die Massenträgheit des Systems und die Torsionssteifigkeit der beiden Stabilisatorhälften 5, 5' gekennzeichnet.One in a shared vehicle stabilizer 5 . 5 ' built-in electric swivel motor 1 is shown in the figure, comprising an electric motor with stator 8th and rotor 9 as adjusting drive and a mechanical swivel motor gearbox 3 , The gear ratio of the swivel motor gearbox 3 is constant. The dynamics of the overall system is determined by the gear ratio, the inertia of the system and the torsional rigidity of the two stabilizer halves 5 . 5 ' characterized.

Der Schwenkmotor 1 besitzt ein durch eine Trennfuge 13 geteilt ausgebildetes Gehäuse. An einem ersten Gehäuseteil 4 ist die eine Stabilisatorhälfte 5 und an einem mit einem Getriebeabtriebselement verbundenen zweiten Gehäuseteil 4' ist die andere Stabilisatorhälfte 5' befestigt. Bruchteile der Stabilisatorhälften 5, 5' sind in der Figur gezeigt, woraus hervorgeht, dass die Stabilisatorhälften 5, 5' im Bereich ihrer Befestigung koaxial zum Schwenkmotor 1 angeordnet sind. Die Drehmomentübertragung auf die Stabilisatorhälften 5, 5' erfolgt über eine geeignete Wellen-Nabenverbin dung, oder, wie gezeichnet, durch je eine Stoffschlussverbindung 2, 2' zwischen den Gehäuseteilen 4, 4' und den jeweilig zugehörigen Stabilisatorhälften 5, 5'.The swivel motor 1 has one through a parting line 13 divided trained housing. On a first housing part 4 is the one stabilizer half 5 and on a second housing part connected to a transmission output element 4 ' is the other stabilizer half 5 ' attached. Fractions of stabilizer halves 5 . 5 ' are shown in the figure, from which it can be seen that the stabilizer halves 5 . 5 ' in the region of their attachment coaxial with the swivel motor 1 are arranged. The torque transmission to the stabilizer halves 5 . 5 ' via a suitable shaft-hub hub tion, or, as drawn, by a respective adhesive connection 2 . 2 ' between the housing parts 4 . 4 ' and the respective associated stabilizer halves 5 . 5 ' ,

Das Schwenkmotorgetriebe 3 umfasst zwei Gewindespindeln 6, 7 mit unterschiedlicher Gewindesteigung, wovon die erste Gewindespindel 6 mit geringer Gewindesteigung vom Rotor 9 des Elektromotors angetrieben wird und deren Spindelmutter 10, über eine Linearführung 15 abgestützt, ihre translatorische Bewegung auf die zweite Gewindespindel 7 mit größerer Gewindesteigung überträgt, die wiederum eine weitere, als Getriebeabtriebselement fungierende, Spindelmutter 11 beaufschlagt, die ausschließlich rotatorisch beweglich mit dem zweiten Gehäuseteil 4' über Wälzlager 14 auf der zweiten Gewindespindel 7 gelagert ist. Zusätzlich ist die weitere Spindelmutter 11 drehfest mit dem zweiten Gehäuseteil 4' verbunden, das ja wiederum drehfest mit der weiteren dazugehörigen Stabilisatorhälfte 5' verbunden ist. Zur Übertragung der translatorischen Bewegung der Spindelmutter 10 auf die zweite Gewindespindel 7 sind diese fest miteinander verbunden.The swivel motor gearbox 3 includes two threaded spindles 6 . 7 with different thread pitch, of which the first threaded spindle 6 with low thread pitch from the rotor 9 the electric motor is driven and its spindle nut 10 , via a linear guide 15 supported, their translational movement on the second threaded spindle 7 transmits with larger pitch, which in turn another, acting as a transmission output element, spindle nut 11 acted upon, the only rotationally movable with the second housing part 4 ' over rolling bearings 14 on the second threaded spindle 7 is stored. In addition, the other spindle nut 11 non-rotatably with the second housing part 4 ' connected, which in turn rotatably with the other associated stabilizer half 5 ' connected is. For transmitting the translational movement of the spindle nut 10 on the second threaded spindle 7 these are firmly connected.

Zur Wankregelung wird der Elektromotor bestromt, der dann sein Drehmoment an das Schwenkmotorgetriebe 3 abgibt. Der Elektromotor ist so ausgeführt, dass er einen im ersten Gehäuseteil 4 eingebauten Stator 8 mit innen befindlichem Rotor 9 besitzt. Dazu ist der Stator 8 als Hohlzylinder ausgebildet und an seinem Außenumfang mit dem ersten Gehäuseteil 4 verbunden, das in diesem Bereich ebenfalls als Hohlzylinder ausgebildet ist, an dessen Innenumfang die erste Gewindespindel 6, mittels Wälzlagern 12 zentrisch, verdrehbar gelagert ist. Der Rotor 9 ist, in Längsrichtung gesehen, axial und verdrehfest an einem Ende der ersten Gewindespindel 6 angebracht.For roll control, the electric motor is energized, which then its torque to the swing motor gear 3 emits. The electric motor is designed so that it has a in the first housing part 4 built-in stator 8th with internal rotor 9 has. This is the stator 8th designed as a hollow cylinder and at its outer periphery with the first housing part 4 connected, which is also formed in this area as a hollow cylinder, on the inner circumference of the first threaded spindle 6 , by rolling bearings 12 is mounted centrically, rotatable. The rotor 9 is, seen in the longitudinal direction, axially and rotationally fixed to one end of the first threaded spindle 6 appropriate.

Der Abtrieb des Schwenkmotorgetriebes 3 erfolgt über die weitere Spindelmutter 11, die als Getriebeabtriebselement drehfest mit dem zweiten Gehäuseteil 4' und damit mit der Stabilisatorhälfte 5' verbunden ist.The output of the swing motor gearbox 3 via the additional spindle nut 11 , rotatably as the transmission output member with the second housing part 4 ' and thus with the stabilizer half 5 ' connected is.

Claims (4)

Geteilter Kraftfahrzeugstabilisator mit einem eingebauten Schwenkmotor (1) zur Wankregelung, der mindestens aus einem Verstellantrieb aus Elektromotor und Schwenkmotorgetriebe (3) und aus einem Gehäuse (4) besteht, wobei mindestens ein Gehäuseteil (4, 4') mit einem dazugehörigen Stabilisatorteil (5, 5') zur Drehmomentübertragung verbunden ist, dadurch gekennzeichnet, dass das Schwenkmotorgetriebe (3) mindestens zwei Gewindespindeln (6, 7) mit unterschiedlicher Gewindesteigung umfasst, wobei eine erste Gewindespindel (6) mit geringerer Steigung vom Elektromotor angetrieben wird und deren Spindelmutter (10) ihre translatorische Bewegung auf eine zweite Gewindespindel (7) mit größerer Gewindesteigung überträgt, die wiederum eine als Getriebeabtriebselement wirkende weitere Spindelmutter (11) beaufschlagt, die ausschließlich rotatorisch beweglich gelagert ist.Divided vehicle stabilizer with a built-in swivel motor ( 1 ) for roll control, the at least one adjustment of electric motor and swing motor gear ( 3 ) and from a housing ( 4 ), wherein at least one housing part ( 4 . 4 ' ) with an associated stabilizer part ( 5 . 5 ' ) is connected for transmitting torque, characterized in that the swivel motor gear ( 3 ) at least two threaded spindles ( 6 . 7 ) with different thread pitch, wherein a first threaded spindle ( 6 ) is driven by the electric motor at a lower pitch and whose spindle nut ( 10 ) translational movement on a second threaded spindle ( 7 ) transmits with a larger pitch, which in turn acts as a transmission output element further spindle nut ( 11 ), which is mounted only rotatably movable. Geteilter Kraftfahrzeugstabilisator nach Anspruch 1, dadurch gekennzeichnet, dass die Spindelmutter (10) mit der zweiten Gewindespindel (7) fest verbunden oder einstückig ausgebildet ist.Split motor vehicle stabilizer according to claim 1, characterized in that the spindle nut ( 10 ) with the second threaded spindle ( 7 ) firmly connected or integrally formed. Geteilter Kraftfahrzeugstabilisator nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die weitere Spindelmutter (11) drehfest mit mindestens einem weiteren Gehäuseteil (4') verbunden ist, das wiederum drehfest mit einem weiteren dazugehörigen Stabilisatorteil (5') verbunden ist.Divided vehicle stabilizer according to one of claims 1 or 2, characterized in that the further spindle nut ( 11 ) rotatably with at least one further housing part ( 4 ' ), which in turn rotatably with another associated stabilizer part ( 5 ' ) connected is. Geteilter Kraftfahrzeugstabilisator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass mindestens ein Antrieb einer Gewindespindel (6, 7) als Kugelgewindetrieb ausgebildet ist.Divided vehicle stabilizer according to one of claims 1 to 3, characterized in that at least one drive a threaded spindle ( 6 . 7 ) is designed as a ball screw.
DE200510031036 2005-07-02 2005-07-02 Separated motor vehicle stabilizer, has swiveling motor gear that includes two threaded screws with different thread pitches, where one of threaded screws makes impact on spindle nut that acts as gear output unit Withdrawn DE102005031036A1 (en)

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DE200510031036 DE102005031036A1 (en) 2005-07-02 2005-07-02 Separated motor vehicle stabilizer, has swiveling motor gear that includes two threaded screws with different thread pitches, where one of threaded screws makes impact on spindle nut that acts as gear output unit

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DE200510031036 DE102005031036A1 (en) 2005-07-02 2005-07-02 Separated motor vehicle stabilizer, has swiveling motor gear that includes two threaded screws with different thread pitches, where one of threaded screws makes impact on spindle nut that acts as gear output unit

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DE102010011144A1 (en) 2010-03-11 2011-09-15 Benteler Automobiltechnik Gmbh Stabilizer arrangement for use as torsion spring between wheel axles of motor car, has actuator cabinet comprising side and housing walls that comprise different wall thicknesses, where actuator is connected with actuator cabinet
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DE102013205370A1 (en) 2013-03-26 2014-10-02 Ovalo Gmbh A method of controlling a chassis stabilizer assembly and active chassis stabilizer
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DE102013211021A1 (en) 2013-05-31 2014-12-04 Ovalo Gmbh Torsion device and chassis influencing device with a torsion device
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