DE102006041717B4 - Electric Power Steering - Google Patents
Electric Power Steering Download PDFInfo
- Publication number
- DE102006041717B4 DE102006041717B4 DE102006041717.8A DE102006041717A DE102006041717B4 DE 102006041717 B4 DE102006041717 B4 DE 102006041717B4 DE 102006041717 A DE102006041717 A DE 102006041717A DE 102006041717 B4 DE102006041717 B4 DE 102006041717B4
- Authority
- DE
- Germany
- Prior art keywords
- gear housing
- steering gear
- steering
- ball screw
- screw nut
- 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.)
- Expired - Fee Related
Links
Images
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
- B62D5/0445—Screw drives
- B62D5/0448—Ball nuts
-
- 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
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/20—Land vehicles
- F16C2326/24—Steering systems, e.g. steering rods or columns
Abstract
Elektromechanische Lenkung, umfassend: – ein Lenkgetriebegehäuse (9), – eine Kugelgewindemutter (2), und – ein Wälzlager (8), über das die Kugelgewindemutter (2) drehbar in dem Lenkgetriebegehäuse (9) gelagert ist, wobei das Wälzlager (8) an seinem Außenkörper (13) einen radial abstehenden Flansch (14) aufweist und lediglich mit diesem Flansch (14) am Lenkgetriebegehäuse (9) festgelegt ist, wobei der Flansch (14) des Wälzlagers (8) mit seinem Außenumfang im Lenkgetriebegehäuse (9) zentriert ist, und wobei zwischen dem Außenkörper (13) des Wälzlagers (8) und dem Lenkgetriebegehäuse (9) ein Zwischenraum (19) vorgesehen ist, dadurch gekennzeichnet, dass der Zwischenraum (19) derart bemessen ist, dass über den gesamten Betriebstemperaturbereich der Lenkung zwischen dem Außenkörper (13) des Wälzlagers (8) und dem Lenkgetriebegehäuse (9) ein zumindest minimaler Spalt erhalten bleibt.Electromechanical steering, comprising: - a steering gear housing (9), - a ball screw nut (2), and - a roller bearing (8) via which the ball screw nut (2) is rotatably mounted in the steering gear housing (9), the roller bearing (8) has a radially protruding flange (14) on its outer body (13) and is only fixed with this flange (14) on the steering gear housing (9), the flange (14) of the roller bearing (8) centering with its outer circumference in the steering gear housing (9) is, and wherein between the outer body (13) of the roller bearing (8) and the steering gear housing (9) an intermediate space (19) is provided, characterized in that the intermediate space (19) is dimensioned such that over the entire operating temperature range of the steering between the outer body (13) of the roller bearing (8) and the steering gear housing (9) an at least minimal gap is maintained.
Description
Die Erfindung bezieht sich auf eine elektromechanische Lenkung nach dem Oberbegriff von Patentanspruch 1.The invention relates to an electromechanical steering system according to the preamble of
Über die Kugelgewindemutter wird ein Antriebsmoment eines Motors unter Zwischenschaltung eines Getriebes in eine translatorische Zahnstangenbewegung umgesetzt, die an den Rädern eines Fahrzeugs zur Wirkung gebracht wird. By means of the ball screw nut, a drive torque of a motor, with the interposition of a gearbox, is converted into a translatory rack movement, which is brought into effect on the wheels of a vehicle.
Betriebsbedingt können an der Lenkung merkliche Temperaturschwankungen von etwa 100 °C auftreten, die sich durch eine Veränderung des Lagerspiels im Wälzlager bemerkbar machen. Eine solche Veränderung des Lagerspiels hat einen deutlich nachweisbaren Einfluss auf die Haptik und Akustik der Lenkung. Durch ein verhältnismäßig großes Lagerspiel könnten zwar die temperaturabhängigen Einflüsse auf die Lenkunterstützung gemindert werden. Allerdings würden sich in einem solchen Fall die akustischen Eigenschaften verschlechtern.Due to the operation, noticeable temperature fluctuations of about 100 ° C can occur on the steering, which can be felt by changing the bearing clearance in the rolling bearing. Such a change in the bearing clearance has a clearly demonstrable influence on the feel and acoustics of the steering. By a relatively large bearing clearance, although the temperature-dependent influences on the steering assistance could be reduced. However, in such a case, the acoustic properties would deteriorate.
Eine Lenkung der eingangs genannten Art ist aus
Der Erfindung liegt die Aufgabe zugrunde, eine technische Alternative für die Abstützung der Kugelgewindemutter im Lenkgetriebegehäuse aufzuzeigen.The invention has for its object to provide a technical alternative for the support of the ball screw nut in the steering gear housing.
Diese Aufgabe wird durch eine elektromechanische Lenkung gemäß Patentanspruch 1 gelöst. This object is achieved by an electromechanical steering system according to
Das Wälzlager ist lediglich mit seinem radial abstehenden Flansch am Lenkgetriebegehäuse festgelegt. Der Außenring des Wälzlagers selbst ist damit vom Lenkgetriebegehäuse entkoppelt. Temperaturbedingte Änderungen der Abmessungen des Lenkgetriebegehäuses und des Wälzlagers sind damit ohne Einfluss auf das Lagerspiel des Wälzlagers und damit auf die Haptik und Akustik der Lenkung. The rolling bearing is fixed only with its radially projecting flange on the steering gear housing. The outer ring of the bearing itself is thus decoupled from the steering gear housing. Temperature-related changes in the dimensions of the steering gear housing and the rolling bearing are thus without influence on the bearing clearance of the bearing and thus on the feel and acoustics of the steering.
Dies ermöglicht es, ein Wälzlager mit einem vergleichsweise kleinen Lagerspiel zu verwenden, wodurch sich die akustischen Eigenschaften weiter verbessern lassen.This makes it possible to use a rolling bearing with a comparatively small bearing clearance, which can further improve the acoustic properties.
Zudem ist es möglich, das Material für das Lenkgetriebegehäuse weitgehend frei zu wählen. Insbesondere kann dieses beispielsweise aus Leichtmetall hergestellt werden, wohingegen das Wälzlager aus einem Wälzlagerstahl gefertigt ist.In addition, it is possible to choose the material for the steering gear housing largely free. In particular, this can be made of light metal, for example, whereas the rolling bearing is made of a bearing steel.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Patentansprüchen angegeben.Further advantageous embodiments of the invention are specified in the patent claims.
Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels erläutert. Die Zeichnung zeigt in:The invention will be explained with reference to an embodiment shown in the drawing. The drawing shows in:
Das Ausführungsbeispiel in den
Zwischen dem Elektromotor und der drehbar gelagerten, jedoch ortsfest gehaltenen Kugelgewindemutter
Die Kugelgewindemutter
Der Flansch
Zwischen der Schulter
Der Zwischenraum
Hierdurch werden temperaturbedingte Zwängungen zwischen dem Wälzlager
Durch die vorstehend erläuterte Konfiguration der Lagerung werden temperaturbedingte Einflüsse sowohl auf die haptischen als auch auf die akustischen Eigenschaften einer elektromechanischen Lenkung verringert.The configuration of the bearing explained above reduces temperature-related influences on both the haptic and acoustic properties of an electromechanical steering.
Da zwischen dem Lenkgetriebegehäuse
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- elektromechanische Lenkung Electric Power Steering
- 22
- Kugelgewindemutter Ball screw nut
- 33
- Zahnstange rack
- 44
- Kugellaufrillen Ball tracks
- 55
- Kugellaufrillen Ball tracks
- 66
- Kugel Bullet
- 77
- Riemenrad pulley
- 88th
- Wälzlager roller bearing
- 99
- Lenkgetriebegehäuse Steering gear housing
- 1010
- innere Laufbahn inner career
- 1111
- äußere Laufbahn outer career
- 1212
- Kugel Bullet
- 1313
- Außenkörper outer body
- 1414
- Flansch flange
- 1515
- Schulter shoulder
- 16 16
- Ausnehmungrecess
- 1717
- Öffnung opening
- 1818
- Bolzen bolt
- 1919
- Zwischenraum gap
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006041717.8A DE102006041717B4 (en) | 2006-09-06 | 2006-09-06 | Electric Power Steering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006041717.8A DE102006041717B4 (en) | 2006-09-06 | 2006-09-06 | Electric Power Steering |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102006041717A1 DE102006041717A1 (en) | 2008-03-27 |
DE102006041717B4 true DE102006041717B4 (en) | 2014-09-18 |
Family
ID=39104422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006041717.8A Expired - Fee Related DE102006041717B4 (en) | 2006-09-06 | 2006-09-06 | Electric Power Steering |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006041717B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008021895A1 (en) | 2008-05-02 | 2012-12-06 | Volkswagen Aktiengesellschaft | Electromechanical steering for vehicle, has belt wheel with through holes releasing screws in rotational position of belt wheel relative to outer bearing ring, where outer diameter of wheel is greater than screw fastening diameter of ring |
DE102008026939B4 (en) | 2008-06-05 | 2022-12-08 | Volkswagen Ag | Method for determining a state of fatigue of the bearings of an electromechanical steering system |
DE102008028055A1 (en) | 2008-06-12 | 2009-12-17 | Volkswagen Ag | Driving power supplying method for electromechanical steering mechanism in vehicle, involves providing motor maximum power threshold value based on temperature of motor and control unit so that value is retracted with increasing temperature |
DE102010051268A1 (en) | 2010-11-12 | 2012-05-16 | Volkswagen Ag | Ball screw thread shoot integrated electromechanical steering-unit for motor car, has ball recirculation device provided at nut, where number of balls is aligned on length of ball travel path according to partial filling coefficient |
DE102016103855A1 (en) * | 2016-03-03 | 2017-09-07 | Cw Bearing Gmbh | Elastic flange bearing |
DE102018207144A1 (en) * | 2018-05-08 | 2019-11-14 | Zf Friedrichshafen Ag | Gear arrangement and method for producing a gear arrangement |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR956223A (en) * | 1950-01-27 | |||
DE4142983C2 (en) * | 1990-12-25 | 2002-07-18 | Nsk Ltd | Ball screw |
DE19519770C2 (en) * | 1994-05-30 | 2002-10-24 | Nsk Ltd | Ball screw |
JP2002339985A (en) * | 2001-05-11 | 2002-11-27 | Nsk Ltd | Roller bearing |
DE102004040360A1 (en) * | 2004-08-20 | 2006-02-23 | Ina-Schaeffler Kg | Ball Screw |
DE102004058963A1 (en) * | 2004-12-08 | 2006-06-14 | Schaeffler Kg | Timing pulley |
-
2006
- 2006-09-06 DE DE102006041717.8A patent/DE102006041717B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR956223A (en) * | 1950-01-27 | |||
DE4142983C2 (en) * | 1990-12-25 | 2002-07-18 | Nsk Ltd | Ball screw |
DE19519770C2 (en) * | 1994-05-30 | 2002-10-24 | Nsk Ltd | Ball screw |
JP2002339985A (en) * | 2001-05-11 | 2002-11-27 | Nsk Ltd | Roller bearing |
DE102004040360A1 (en) * | 2004-08-20 | 2006-02-23 | Ina-Schaeffler Kg | Ball Screw |
DE102004058963A1 (en) * | 2004-12-08 | 2006-06-14 | Schaeffler Kg | Timing pulley |
Also Published As
Publication number | Publication date |
---|---|
DE102006041717A1 (en) | 2008-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1995417B1 (en) | Cam shaft | |
DE102006041717B4 (en) | Electric Power Steering | |
DE102009053102B4 (en) | Turbocharger having a thrust bearing arrangement for a shaft of the turbocharger | |
EP1961101B1 (en) | Bearing system for an electric motor and electric motor | |
EP2499378B1 (en) | Turbocharger housing | |
WO2012079881A1 (en) | Bearing arrangement for a turbocharger, and turbocharger | |
EP1802850B1 (en) | Lifelong-lubricated camshaft drive for an internal combustion engine | |
DE102006037479A1 (en) | Power steering | |
EP1917157B1 (en) | Eccentricity gear step | |
DE102013213708A1 (en) | Worm gear for a power steering device of a motor vehicle with clearance compensation | |
EP1593865B1 (en) | Rolling element bearing | |
DE102009053106A1 (en) | Turbocharger housing and tooling for machining the turbocharger housing | |
EP2155532B1 (en) | Ball screw drive | |
DE102008059598A1 (en) | Exhaust gas turbocharger for internal-combustion engine of motor vehicle, has bearing arrangement with cone bearings e.g. hydrodynamic sliding bearings that are axially spaced from each other and have opposite tapers | |
DE102006041718A1 (en) | Electric Power Steering | |
DE102009014246A1 (en) | Drive system for a motor-assisted bicycle | |
DE10152484A1 (en) | Sealing for a release bearing | |
WO2016141937A1 (en) | Linear actuating drive and method for assembling an actuating drive | |
WO2013007399A1 (en) | Transmission device comprising at least one electric motor for a vehicle | |
DE10353161A1 (en) | Electrical servo-mechanism for automotive power steering has ball screw drive bearing located within electric motor power output wheel | |
DE102007001531B4 (en) | Electric Power Steering | |
DE102008046009A1 (en) | Charging device, particularly supercharger for motor vehicle, has variable turbine or compressor geometry, and guide vane is mounted on blade bearing in rotating manner | |
DE102006005602A1 (en) | Fluid dynamic storage system | |
DE102011111417A1 (en) | Electromechanical steering gear for motor car, has bearing ring axially arranged at housing under interposition of elastic element, where bias of element is generated through axial bracings of plate with housing | |
WO2011057946A1 (en) | Receptacle device for the rotor assembly of a turbocharger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |