DE10310505A1 - Servo steering system for automobile has 2 parallel belt drives between electric motor shaft and intermediate drive for reducing noise emission level - Google Patents
Servo steering system for automobile has 2 parallel belt drives between electric motor shaft and intermediate drive for reducing noise emission level Download PDFInfo
- Publication number
- DE10310505A1 DE10310505A1 DE2003110505 DE10310505A DE10310505A1 DE 10310505 A1 DE10310505 A1 DE 10310505A1 DE 2003110505 DE2003110505 DE 2003110505 DE 10310505 A DE10310505 A DE 10310505A DE 10310505 A1 DE10310505 A1 DE 10310505A1
- Authority
- DE
- Germany
- Prior art keywords
- belt
- steering system
- drive
- pulley
- steering
- 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- Withdrawn
Links
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
- B62D5/0421—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
-
- 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
- B62D5/0445—Screw drives
- B62D5/0448—Ball nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2096—Arrangements for driving the actuator using endless flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
Abstract
Description
Die Erfindung betrifft ein Lenksystem, insbesondere ein Servolenksystem, für ein Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1.The invention relates to a steering system, in particular a power steering system for a motor vehicle according to the Preamble of claim 1.
Die
Die Geräuschemission eines solchen Zahnriementriebes ist nicht minimiert. Zudem können bei dieser formschlüssigen, spielfreien getrieblichen Verbindung von Servomotor und Getriebe durch insbesondere stochastische Einleitung von radseitigen Lasten Schäden an Elementen des Lenksystems und insbesondere an dem Servomotor entstehen.The noise emission of such Toothed belt drive is not minimized. In addition, this form-fitting, backlash-free gear connection between servo motor and gear through in particular stochastic introduction of wheel-side loads damage on elements of the steering system and in particular on the servo motor arise.
Um diese Probleme zu umgehen, könnten Keilriementriebe eingesetzt werden. Diese haben aber im Vergleich zu den Zahnriementrieben einen steiferen Aufbau und benötigen zur Momentenübertragung eine höhere Vorspannung. Dies führt zu einem höheren Leerdurchdrehmoment des Getriebes und somit zu einer Lenkung, die mit einer größeren Reibung behaftet ist, was sich wiederum nachteilig auf das Rückstellverhalten der Lenkung auswirkt.V-belt drives could be used to circumvent these problems be used. However, these have driven in comparison to the timing belt a more rigid structure and need for torque transmission a higher one Preload. this leads to to a higher one Idle torque of the transmission and thus to a steering that with greater friction is afflicted, which in turn adversely affects the reset behavior the steering affects.
Der Erfindung liegt die Aufgabe zugrunde, ein Lenksystem anzugeben, das eine geringe Geräuschemission, aber dennoch ein ausgeprägtes Rückstellverhalten aufweist.The invention is based on the object Steering system to indicate a low noise, but still a pronounced one Restoring behavior having.
Die Aufgabe wird mit einem Lenksystem mit den Merkmalen des Anspruchs 1 gelöst.The task is done with a steering system solved with the features of claim 1.
Dadurch, dass die Motorwelle zusätzlich zu der ersten Zahnscheibe noch eine erste Keilriemenscheibe trägt, und dass an der zweiten Zahnscheibe eine zweite Keilriemenscheibe angeordnet ist, die über einen Keilriemen mit der ersten Keilriemenscheibe des Getriebes ebenfalls zum Antrieb des verlagerbaren Bauelementes verbunden ist, wird ein zweizügiger Riementrieb gebildet, der einen Zahnriementrieb und einen parallel dazu arbeitenden Keilriementrieb umfasst.The fact that the motor shaft in addition to the first pulley still carries a first V-belt pulley, and that a second V-belt pulley is arranged on the second toothed pulley is that about a V-belt with the first V-belt pulley of the gearbox is also connected to drive the displaceable component, will be a two-pass Belt drive formed of a toothed belt drive and a parallel includes V-belt drive working for this.
Diese Konstruktion ermöglicht es, dass sehr schmale Riemen verwendet werden können, weil das Motormoment von beiden Riementrieben übertragen wird. Da die Geräuschemission eines Zahnriemens aber direkt abhängig ist von seiner Breite, kann die Geräuschentwicklung sehr stark eingedämmt werden. Außerdem ist die geringe Breite auch bei dem Keilriemen von Vorteil für das Lenkverhalten, weil die Steifigkeit des Keilriemens mit kleiner werdender Riemenbreite abnimmt.This construction enables that very narrow belts can be used because of the engine torque is transmitted by both belt drives. Because the noise emission a timing belt is directly dependent on its width, can the noise very much contained become. Moreover the narrow width is also advantageous for the steering behavior with the V-belt, because the stiffness of the V-belt as the belt width becomes smaller decreases.
Besonders vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Particularly advantageous configurations the invention emerge from the subclaims.
Demnach ist es besonders vorteilhaft,
wenn der Keilriemen ein Verbundkeilriemen, insbesondere ein Keilrippenriemen
(
Die beiden Riementriebe sollten vorzugsweise jeweils ein Übersetzungsverhältnis ins Langsame von etwa 3:1 aufweisen, wobei der Zahnriementrieb und der Keilriementrieb verschieden große Übersetzungsverhältnisse haben, die jedoch nicht mehr als 20% voneinander abweichen. In diesem Zusammenhang ist es von Vorteil, wenn das Übersetzungsverhältnis des Zahnriementriebs größer ist als das Übersetzungsverhältnis des Keilriementriebs. Weil der formschlüssige Zahnriementrieb die Getriebeübersetzung vorgibt, muss der Keilriemen die Übersetzungsdifferenz durch Schlupf ausgleichen. Das wiederum bewirkt eine Dehnung, also eine elastische Vorspannung, des Keilriemens und führt letztlich auch zu einer Unterstützung des Rücklaufs.The two belt drives should preferably one ratio each Have slow of about 3: 1, the toothed belt drive and the V-belt drive gear ratios of different sizes have that do not differ from each other by more than 20%. In this Context, it is advantageous if the gear ratio of the Toothed belt drive is larger than the gear ratio of the V-belt drive. Because the positive toothed belt drive is the gear ratio specifies, the V-belt must pass through the transmission difference Compensate for slip. This in turn causes an elongation, i.e. one elastic preload, the V-belt and ultimately leads to one support of the return.
Die hier einzusetzenden Verbundkeilriemen sind vorzugsweise Riemen in Form von Verbund-Schmalkeilriemen oder Keilrippenriemen. Sie bestehen u.a. aus einem endlosen Zugstrang von Polyester- oder Polyamidcord oder dergleichen, mit hoher Festigkeit und geringer Dehnung zwischen einer verschleißfesten Deckschicht aus Polyester und parallel zur Laufrichtung verlaufenden Schmalkeilen bzw. Rippen. Diese sind im Unterbau des Verbundkeilriemens angeordnet und aus einem Elastomer-Werkstoff, wie Polychloropren ausgebildet und gewährleisten bei gutem Kraftschluss eine gleichmäßige Kraftübertragung über die gesamte Riemenbreite. Das Leistungsübertragungsverhalten und die Dehnbarkeit des Verbundkeilriemens werden in erster Linie durch den Zugstrang und dem Gewebe oder den Fäden aus dem der Zugstrang gebildet ist bestimmt, wobei der Elastizitätsmodul des gesamten Riemens generell gleich dem Elastizitätsmodul des Zugstranges ist.The composite V-belts to be used here are preferably belts in the form of composite narrow V-belts or V-ribbed belts. They exist among other things from an endless pull cord of polyester or Polyamide cord or the like, with high strength and less Elongation between a wear-resistant polyester top layer and narrow wedges or ribs running parallel to the direction of travel. These are arranged in the substructure of the composite V-belt and made of an elastomer material such as polychloroprene and ensure with good adhesion, even power transmission across the entire belt width. The power transmission behavior and the extensibility of the composite V-belt are primarily formed by the tensile cord and the fabric or threads from which the tensile cord is formed is determined with the elastic modulus of the entire belt generally equal to the modulus of elasticity of the train.
Der erfindungsgemäße Riementrieb weist bevorzugt ein Übersetzungsverhältnis ins Langsame von etwa 3:1 auf und ist vorzugsweise in einem einzigen Gehäuse zusammen mit dem elektrischen Servomotor untergebracht.The belt drive according to the invention preferably has a translation ratio into Slow from around 3: 1 and is preferably in a single casing housed together with the electric servo motor.
Das Getriebe ist vorzugsweise als Kugelumlaufgetriebe ausgebildet, bei dem eine Kugelumlaufmutter in einen Gewindeabschnitt der Schubstange eingreift, wobei die zweite Riemenscheibe drehfest mit der Kugelumlaufmutter verbunden ist. Diese Anordnung eignet sich besonders gut für den Einsatz bei einem achsparallelem Hilfslenkantrieb.The gear is preferably as Recirculating ball gear trained, in which a recirculating ball nut engages in a threaded portion of the push rod, the second Pulley is rotatably connected to the ball nut. This arrangement is particularly suitable for use with an axially parallel Auxiliary steering drive.
Es kann auch zweckmäßig sein, insbesondere um ein steer-by-wire Lenksystem mit einer elektromechanischen Redundanzebene darzustellen, mehrere, insbesondere zwei elektrische Servomotoren über je einen Keilrippenriemen mit Riemenscheiben des Getriebes zu verbinden.It can also be useful especially a steer-by-wire steering system with an electromechanical one Represent redundancy level, several, especially two electrical Servo motors over to connect a V-ribbed belt to the transmission pulleys.
Die getriebliche Verbindung des elektrischen Servomotors mit dem Getriebe über den Keilrippenriemen eignet sich bevorzugt zur Verlagerung einer Schubstange in einer Servolenkung, wobei die Riemenscheibe des Getriebes drehfest mit einer Kugelumlaufmutter verbunden ist. Es ist aber auch denkbar, den Servomotor in der Nähe der Lenksäule anzuordnen und ein Lenkritzel über ein zwei- oder mehrstufiges, erfindungsgemäßes Riemengetriebe anzutreiben.The gear connection of the electric servo motor with the gearbox over the V-ribbed belt is particularly suitable for moving a push rod in a power steering system, the pulley of the transmission being non-rotatable is connected to a recirculating ball nut. But it is also conceivable the servo motor nearby to arrange the steering column and a steering pinion over to drive a two-stage or multi-stage belt transmission according to the invention.
Nachfolgend wird die Erfindung näher beschrieben anhand eines Ausführungsbeispiels und unter Zuhilfenahme der beiliegenden Zeichnungen:The invention is described in more detail below based on an embodiment and with the help of the attached drawings:
Die
In der
Das hier dargestellte Getriebe
Der Zahnriementrieb
Dadurch dass zwei Riementriebe
Beide Riementriebe
Vorzugsweise wird ein elastischer
Keilrippenriemen
Dieser Effekt kann noch verstärkt werden,
indem die Übersetzungsverhältnisse
der beiden Riementriebe
Der redundante Aufbau des zweizügigen Getriebes
Die Erfindung ist nicht nur in den oben genau beschriebenen Anwendungsfällen von elektrischen Servolenkungen einsetzbar. Ebenso können auch im Bereich von anderen Bauformen von Elektrolenkungen, etwa solchen mit Doppleritzelantrieben, (dual pinion) oder an der Lenksäule mittels Lenkritzel einwirkende Antrieben.The invention is not only in the Applications of electric power steering described in detail above used. You can also also in the area of other types of electric steering, for example those with double pinion drives, (dual pinion) or on the steering column Steering pinion acting drives.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003110505 DE10310505A1 (en) | 2003-03-11 | 2003-03-11 | Servo steering system for automobile has 2 parallel belt drives between electric motor shaft and intermediate drive for reducing noise emission level |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003110505 DE10310505A1 (en) | 2003-03-11 | 2003-03-11 | Servo steering system for automobile has 2 parallel belt drives between electric motor shaft and intermediate drive for reducing noise emission level |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10310505A1 true DE10310505A1 (en) | 2004-09-23 |
Family
ID=32892023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003110505 Withdrawn DE10310505A1 (en) | 2003-03-11 | 2003-03-11 | Servo steering system for automobile has 2 parallel belt drives between electric motor shaft and intermediate drive for reducing noise emission level |
Country Status (1)
Country | Link |
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DE (1) | DE10310505A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006061104A1 (en) * | 2004-12-08 | 2006-06-15 | Schaeffler Kg | Toothed belt pulley |
DE102005023274A1 (en) * | 2005-05-20 | 2006-11-23 | Schaeffler Kg | Recirculating ball screw and nut, comprises complementary flanges at spindle nut and drive element |
DE102005040154A1 (en) * | 2005-08-25 | 2007-03-01 | Zf Lenksysteme Gmbh | Device for supporting ball nut of ball screw mechanism for motor vehicle power steering, has flexible spring regions, each joining housing and inner race attachment regions of outer race of receiving element |
DE102007026605A1 (en) | 2007-06-08 | 2008-12-11 | Schaeffler Kg | Ball Screw |
DE102008001961A1 (en) * | 2008-05-26 | 2009-12-17 | Zf Lenksysteme Gmbh | Actuator for gear rod-electrical power steering system, of passenger car, has wheel and servo motor shaft designed as single piece, and another wheel and nut designed as single piece, where motor is provided at frame |
CN104698984A (en) * | 2015-02-17 | 2015-06-10 | 北京精密机电控制设备研究所 | Thrust vector controlled electromechanical servo system |
CN109195861A (en) * | 2016-05-25 | 2019-01-11 | Zf腓特烈斯哈芬股份公司 | The application of diverter with adjustment device and the diverter with adjustment device |
GB2568925A (en) * | 2017-11-30 | 2019-06-05 | Trw Ltd | Power-assisted steering assembly |
DE102018202611A1 (en) * | 2018-02-21 | 2019-08-22 | Ford Global Technologies, Llc | Motor vehicle with mechanically decoupled steering |
EP4039563A1 (en) | 2021-12-07 | 2022-08-10 | thyssenkrupp Presta Aktiengesellschaft | Steering drive for a steering system of a motor vehicle, method for operating a steering drive, steering system for a motor vehicle and method for operating a steering system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3932859A1 (en) * | 1989-10-02 | 1991-04-11 | Continental Ag | V-BELT DRIVE |
DE19827869A1 (en) * | 1998-06-23 | 1999-12-30 | Bosch Gmbh Robert | Steering system for motor vehicles |
DE10112282A1 (en) * | 2001-03-14 | 2002-10-24 | Delphi Tech Inc | Auxiliary power steering drive has first roller fixed to shaft so that it cannot rotate but has certain degree of freedom of movement |
DE4114477C2 (en) * | 1991-05-03 | 2003-08-28 | Claas Kgaa Mbh | V-belt drive with tensioning device |
-
2003
- 2003-03-11 DE DE2003110505 patent/DE10310505A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3932859A1 (en) * | 1989-10-02 | 1991-04-11 | Continental Ag | V-BELT DRIVE |
DE4114477C2 (en) * | 1991-05-03 | 2003-08-28 | Claas Kgaa Mbh | V-belt drive with tensioning device |
DE19827869A1 (en) * | 1998-06-23 | 1999-12-30 | Bosch Gmbh Robert | Steering system for motor vehicles |
DE10112282A1 (en) * | 2001-03-14 | 2002-10-24 | Delphi Tech Inc | Auxiliary power steering drive has first roller fixed to shaft so that it cannot rotate but has certain degree of freedom of movement |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006061104A1 (en) * | 2004-12-08 | 2006-06-15 | Schaeffler Kg | Toothed belt pulley |
DE102005023274A1 (en) * | 2005-05-20 | 2006-11-23 | Schaeffler Kg | Recirculating ball screw and nut, comprises complementary flanges at spindle nut and drive element |
DE102005023274B4 (en) | 2005-05-20 | 2018-12-27 | Schaeffler Technologies AG & Co. KG | rolling bodies |
DE102005040154A1 (en) * | 2005-08-25 | 2007-03-01 | Zf Lenksysteme Gmbh | Device for supporting ball nut of ball screw mechanism for motor vehicle power steering, has flexible spring regions, each joining housing and inner race attachment regions of outer race of receiving element |
DE102007026605B4 (en) | 2007-06-08 | 2019-01-24 | Schaeffler Technologies AG & Co. KG | Method for producing a ball screw drive |
DE102007026605A1 (en) | 2007-06-08 | 2008-12-11 | Schaeffler Kg | Ball Screw |
DE102008001961A1 (en) * | 2008-05-26 | 2009-12-17 | Zf Lenksysteme Gmbh | Actuator for gear rod-electrical power steering system, of passenger car, has wheel and servo motor shaft designed as single piece, and another wheel and nut designed as single piece, where motor is provided at frame |
CN104698984A (en) * | 2015-02-17 | 2015-06-10 | 北京精密机电控制设备研究所 | Thrust vector controlled electromechanical servo system |
CN104698984B (en) * | 2015-02-17 | 2017-10-03 | 北京精密机电控制设备研究所 | The electromechanical servo system of thruster vector control |
CN109195861A (en) * | 2016-05-25 | 2019-01-11 | Zf腓特烈斯哈芬股份公司 | The application of diverter with adjustment device and the diverter with adjustment device |
GB2568925A (en) * | 2017-11-30 | 2019-06-05 | Trw Ltd | Power-assisted steering assembly |
US10948060B2 (en) | 2017-11-30 | 2021-03-16 | ZF Automotive UK Limited | Power-assisted steering assembly |
GB2568925B (en) * | 2017-11-30 | 2022-09-28 | Trw Ltd | Power-assisted steering assembly |
DE102018202611A1 (en) * | 2018-02-21 | 2019-08-22 | Ford Global Technologies, Llc | Motor vehicle with mechanically decoupled steering |
US11001296B2 (en) | 2018-02-21 | 2021-05-11 | Ford Global Technologies, Llc | Motor vehicle steering system |
EP4039563A1 (en) | 2021-12-07 | 2022-08-10 | thyssenkrupp Presta Aktiengesellschaft | Steering drive for a steering system of a motor vehicle, method for operating a steering drive, steering system for a motor vehicle and method for operating a steering system |
DE102022212649A1 (en) | 2021-12-07 | 2023-06-07 | Thyssenkrupp Ag | Steering drive for a steering system of a motor vehicle, method for operating a steering drive, steering system for a motor vehicle and method for operating a steering system |
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