WO2011009810A1 - Mécanisme de direction et système de direction de véhicule - Google Patents

Mécanisme de direction et système de direction de véhicule Download PDF

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Publication number
WO2011009810A1
WO2011009810A1 PCT/EP2010/060264 EP2010060264W WO2011009810A1 WO 2011009810 A1 WO2011009810 A1 WO 2011009810A1 EP 2010060264 W EP2010060264 W EP 2010060264W WO 2011009810 A1 WO2011009810 A1 WO 2011009810A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering
drive spindle
gear according
steering gear
gear
Prior art date
Application number
PCT/EP2010/060264
Other languages
German (de)
English (en)
Inventor
Wolfgang Schweiger
Original Assignee
Magna Powertrain Ag & Co Kg
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 Magna Powertrain Ag & Co Kg filed Critical Magna Powertrain Ag & Co Kg
Publication of WO2011009810A1 publication Critical patent/WO2011009810A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • 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
    • 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
    • B62D5/0454—Worm gears

Definitions

  • the present invention relates to a steering gear with a rotatably mounted in a housing drive spindle and a vehicle steering assembly with such a steering gear.
  • Known steering arrangements are usually designed either as a mechanical rack and pinion steering in which a rack is displaceable by a steering pinion, or they comprise a drive spindle, which can be moved translationally for example via a drivable spindle nut for moving the wheels of the motor vehicle.
  • EPS Electrical Power Steering
  • EAFS Electrical Active Front Steering
  • active steering systems usually have to be realized by relatively complex additional equipment.
  • known steering systems use separate systems arranged on the steering column (so-called steering column dividers) for the angle superposition with active AFS function or they are designed as hydraulic power steering systems with an additional superposition unit for the AFS function on the steering pinion. It is an object of the invention to provide a steering gear of the type mentioned, which is very compact.
  • a steering gear with the features of claim 1.
  • a vehicle steering arrangement according to the invention comprises the features of claim 16.
  • the steering gear is described by the compact design suitable for both front axle and Schuachslenksy stones. An integration of the steering gear in the subframe is possible lent.
  • the steering gear is also suitable for high tie rod forces. Due to the preferred tubular design and the small outer diameter, the use as a Schuachslenksystem and the integration in the subframe is possible.
  • an actuator unit consisting of a hollow shaft motor, a running at its ends as a spindle drive shaft and a superposition gear unit (eg planetary gear), the torque support (EPS function) and optionally the angle superposition (EAFS function) can be done via an electric motor.
  • EPS function torque support
  • EAFS function angle superposition
  • the servomotor can be fastened to a rotating, axially fixed drive spindle or, for example via a reduction gear, in particular a planetary gear, are in operative connection with the drive spindle.
  • a steering gear with EPS system is shown.
  • the steering gear comprises an actuator motor 2 in the form of a hollow shaft motor, the rotor 1 of which is connected in a rotationally fixed manner to a drive spindle 3 which is rotatable about its axis of rotation 3a and which is immovably fixed in the axial direction relative to a housing, not shown, of the steering device.
  • the rotor 1 can also be integrated in the drive spindle 3, for example by embedded magnetic bars.
  • the ends of the drive spindle 3 each comprise a thread 3b designed as an external thread, onto which two coupling elements designed as threaded nuts 4 are screwed.
  • the threads 3b can also be embodied as internal threads into which, for example, rod-shaped or tubular coupling elements with external threads are screwed. This is also possible in the embodiments of FIGS. 2 to 4.
  • the threads 3b and the mating threads are each inclined in the same direction and in particular each have the same Slope on, so that when turning the drive spindle 3, the coupling elements 4 are each moved synchronously in the same direction.
  • the coupling elements 4 are operatively connected to the pivoting of wheels, not shown, of the motor vehicle with these.
  • a reduction gear unit 12 may be arranged between the rotor 1 of the hollow shaft motor 2 and the drive spindle 3. This also applies to the embodiments shown in FIGS. 3 and 4.
  • the coupling elements 4 are axially slidably guided in the housing of the steering gear according to double arrows 14, but secured against rotation and are used to implement a rotational movement of the drive spindle 3 in a steering action corresponding axial movement.
  • Such a rotational movement can be achieved via a steering shaft 5, which is connected to the input element of an optional reduction gear 6.
  • the reduction gear is designed as a planetary gear, wherein the planet carrier, the input element and the sun gear forms the output. While the ring gear of the planetary gear is fixed to the housing, the sun gear is connected as a driven element with a trained as bevel gear steering pinion 7 rotatably connected.
  • the steering pinion 7 engages without play or by axial preload play in a further rotatably connected to the drive spindle 3 bevel gear 8, so that upon rotation of the steering shaft 5, the drive spindle 3 is rotated.
  • another coupling between the steering shaft 5 and the drive spindle 3 is possible.
  • a torque sensor 13 may be provided, in particular before the reduction gear 6 and advantageously within arranged the steering housing and designed to determine the transmitted torque from the steering shaft 5.
  • the ring gear of the reduction gear 6 can be connected via an external external toothing 9 via a worm drive 10 self-locking with an actuator motor 11, as shown in FIGS. 3 and 4.
  • the actuator motor 11 can be arranged parallel to the drive spindle (FIG. 3) or perpendicular thereto (FIG. 4). Also any other angles are possible.
  • the hollow shaft motor 2 and / or the actuator motor 11 may be provided or omitted.
  • the connection to a steering shaft 5 can be omitted and the rotary actuation of the drive spindle can only take place via the electric motor 2.
  • the electric motor 2 is used as a servomotor (torque assistance by EPS system).
  • the Kopplugs institute 4 can be designed to reduce axial play and sliding friction with a ball screw.
  • this ball screw nut can be designed in such a way that that the ball recirculation of the ball circulation takes place via special grooves integrated on the outer circumferential surface and thus the ball screw nut in the housing is additionally guided in the axial direction. The rotation can be done at the remote diameter.
  • EPS torque superposition
  • EAFS function angle superimposition
  • a simple and compact realization of EPS (torque superposition) and EAFS function (angle superimposition) in a steering gear unit is possible.
  • This can be done in particular in coaxial design, based on a spindle drive with a rotating drive spindle, an optional reduction gear unit, a superposition gear unit (eg helical planetary gear) and two electric motors.
  • the system is characterized by a very compact design and high efficiency.
  • the required in the known concepts rack and pinion completely eliminated. Thanks to its tubular design and small outer diameter, this steering actuator is suitable for integration into the subframe.
  • the spindle is preferably self-locking or it may be an additional locking mechanism (brake, locking pin, ...) may be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

L'invention concerne un mécanisme de direction qui présente une biellette de commande montée à rotation dans un carter. La biellette de commande comprend au moins un filet à chacune de ses deux extrémités, un élément d'accouplement pourvu d'un contre-filet étant disposé à chaque extrémité et engrenant le filet correspondant de la biellette de commande. L'invention concerne également un système de direction de véhicule qui présente un tel mécanisme de direction.
PCT/EP2010/060264 2009-07-20 2010-07-15 Mécanisme de direction et système de direction de véhicule WO2011009810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910033912 DE102009033912A1 (de) 2009-07-20 2009-07-20 Lenkgetriebe und Fahrzeuglenkanordnung
DE102009033912.4 2009-07-20

Publications (1)

Publication Number Publication Date
WO2011009810A1 true WO2011009810A1 (fr) 2011-01-27

Family

ID=42830699

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/060264 WO2011009810A1 (fr) 2009-07-20 2010-07-15 Mécanisme de direction et système de direction de véhicule

Country Status (2)

Country Link
DE (1) DE102009033912A1 (fr)
WO (1) WO2011009810A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014100718A1 (de) 2013-12-11 2015-06-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hinterachslenkung für Kraftfahrzeuge und Verfahren zu deren Betrieb
DE102014100719A1 (de) 2013-12-11 2015-06-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hinterachslenkung für Kraftfahrzeuge
DE102014117861B4 (de) 2014-12-04 2023-08-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hinterachslenkung für Kraftfahrzeuge
DE102017221289B4 (de) * 2017-11-28 2023-06-29 Robert Bosch Gmbh Risikominimaler Zustand in einem steer-by-wire-Lenksystem
DE102022104584A1 (de) 2022-02-25 2023-08-31 Schaeffler Technologies AG & Co. KG Lenksystem und lenkbare Achse für ein Kraftfahrzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008069172A1 (fr) * 2006-12-05 2008-06-12 Thk Co., Ltd. Dispositif de direction à vis sphérique
DE102007010003A1 (de) * 2007-03-01 2008-09-11 Magna Powertrain Ag & Co Kg Lenkgetriebe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE529178C (de) * 1929-12-19 1931-07-09 Gabriel Becker Dr Ing Anordnung zum Ausgleich der Kreiselmomente mehrerer Lenkraeder
DE19906709A1 (de) * 1999-02-18 2000-08-24 Kayser Herold Uwe Mechanischer Servoregler
US6637541B2 (en) * 2001-12-17 2003-10-28 Visteon Global Technologies, Inc. Steering system having an interlocking mechanism
US7479089B2 (en) * 2005-01-26 2009-01-20 Jtekt Corporation Differential gear apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008069172A1 (fr) * 2006-12-05 2008-06-12 Thk Co., Ltd. Dispositif de direction à vis sphérique
US20100095793A1 (en) * 2006-12-05 2010-04-22 Thk Co., Ltd. Steering device using ball screw
DE102007010003A1 (de) * 2007-03-01 2008-09-11 Magna Powertrain Ag & Co Kg Lenkgetriebe

Also Published As

Publication number Publication date
DE102009033912A1 (de) 2011-01-27

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