EP3512757A1 - Lenkvorrichtung für ein fahrzeug - Google Patents
Lenkvorrichtung für ein fahrzeugInfo
- Publication number
- EP3512757A1 EP3512757A1 EP17749445.7A EP17749445A EP3512757A1 EP 3512757 A1 EP3512757 A1 EP 3512757A1 EP 17749445 A EP17749445 A EP 17749445A EP 3512757 A1 EP3512757 A1 EP 3512757A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- lever
- actuator
- steering device
- push rod
- 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- Withdrawn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
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/08—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle
- B62D7/09—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle characterised by means varying the ratio between the steering angles of the steered wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
Definitions
- the invention relates to a steering device for a vehicle, in particular for a car or commercial vehicle.
- the field of application of the invention extends to both independent and solid axles of vehicles.
- rack and pinion steering systems In the use of independent wheel suspensions in passenger cars and commercial vehicles, such as tractor units, rack and pinion steering systems are used.
- the rack and pinion steering system comprises a linear actuator which is connected via tie rods to the suspension.
- the rack-and-pinion steering system Due to the system, the rack-and-pinion steering system has a very strongly changing transmission ratio between the actuator and the wheel movement. Due to the extension in the end positions, a comparatively large actuator force is required here. Therefore, the actuator performance is designed so that the Aktuatorkraft sufficient for the initiation of a maximum steering angle, although the occurring at the steering axis of the wheel torque behaves almost constantly above the steering angle.
- DE 10 2006 052 252 A1 discloses an independent wheel suspension for a motor vehicle, in which at least one first and at least one second link are each articulatedly coupled to a wheel carrier carrying a vehicle wheel.
- the independent suspension has compensation means for correcting wheel positions, wherein at least the first and the second link have a compensation means or are connected to a compensation means and at least two compensation means of each wheel are interconnected by at least one coupling member.
- the invention has for its object to further develop a steering device for a vehicle, in particular, a steering kinematics of the steering device to be improved.
- the steering device according to the invention for a vehicle comprises an actuator which is provided to act on a push rod with an axial force, wherein the push rod is hingedly connected on both sides with a respective coupling rod, wherein the respective coupling rod is pivotally connected to a respective lever, wherein the respective Deflection lever is pivotally connected to a respective tie rod, and wherein the respective tie rod is pivotally connected to a respective toe lever, wherein the respective toe lever is operatively connected to a respective wheel carrier to steer a respective wheel of a vehicle axle in accordance with an axial movement of the push rod, and wherein the respective reversing lever is provided to change a gear ratio between the push rod and the respective tie rod to lower the axial force on the actuator.
- a ratio change takes place at the respective reversing lever, wherein the maximum axial force that has to be applied by the actuator in order to set a maximum steering angle is significantly reduced.
- the actuator performance can be made smaller, the power reduction of the actuator at the same time accompanied by a weight reduction and cost reduction.
- the actuator is designed to be particularly compact.
- the solution according to the invention offers greater design freedom through the selection of the respective translation. In particular, thereby also a steering angle error can be reduced.
- two articulated interconnected components such as the coupling rod and the lever
- the respective coupling rod and the respective reversing lever are connected to each other by means of a ball joint.
- the respective lever is connected by means of a ball joint or by means of a rubber bearing with the respective tie rod.
- Actively connected means that two elements can be directly connected to one another, or that there are further elements between two elements, for example one or more shafts, coupling rods or similar elements.
- the respective lever on a first and a second leg, wherein the two legs are rotatably connected to each other. Consequently, the two legs of the respective reversing lever enclose an angle which is fixed and thus unchangeable.
- the respective reversing lever is integrally formed.
- the respective reversing lever is at least partially fixed, wherein the respective reversing lever has a hinge joint for realizing a pivoting movement.
- the hinge joint has a single degree of freedom and thus allows rotation about the fixed point in a limited angular range. Due to the hinge joint of the actuator does not affect the track change during compression of the respective wheel. Because the hinge joint allows only a rotational movement around the specified point.
- the lever is frame-fixed, handlebar-resistant or Radmonfest trained.
- the respective reversing lever, or at least a portion of the respective reversing lever according to a first embodiment fixedly fixed to a respective frame member of the vehicle.
- the respective reversing lever, or at least a portion of the respective reversing lever be fixed to a respective handlebar of the vehicle.
- the respective reversing lever, or at least a portion of the respective reversing lever fixed to a respective wheel carrier of the vehicle. A pivoting movement of the respective reversing lever is always possible.
- the invention includes the technical teaching that the actuator is operatively connected to an input shaft, wherein the actuator is provided to a rotational movement of the input shaft in a translational movement of the push rod convert.
- a translational movement is meant a linear movement in the longitudinal direction of the push rod.
- the input shaft is at least indirectly connected to a steering handle, preferably a steering wheel.
- the steering movement of the steering handle is converted via the steering device into a steering movement of the vehicle.
- the rotational movement of the input shaft is converted via the actuator in the translational movement of the push rod, wherein the push rod on the respective coupling rod, the respective articulated lever associated therewith, the respective articulated tie rod and the respective articulated associated toe lever with the respective suspension and thus also interacts with the respective wheel of the steerable vehicle axle.
- the input shaft may be mechanically, electrically, pneumatically or hydraulically coupled to the push rod via the actuator.
- the mechanical coupling is preferably realized via a gear-rack combination due to the ease of manufacture.
- a gear-rack combination is located on the input shaft, a first gear, which meshes with a rack arranged on the rack.
- a rotation of the input shaft causes a rotation of the gear, which is in meshing engagement with the rack, whereby the rack is axially displaced together with the push rod.
- the push rod is designed as a rack and thus integrally integrated into the push rod.
- the electrical coupling of the input shaft with the push rod may be such that a sensor is arranged on the input shaft, which detects a rotation of the input shaft.
- an actuator is arranged on the push rod, which can move the push rod axially, wherein the actuator is actuated upon detection of rotation of the input shaft by the sensor to move the push rod accordingly.
- one or more valves are arranged as sensors on the input shaft.
- a pressure medium is arranged in two Arranged on the push rod beitszylinder introduced, whereby ever a piston rod of the working cylinder off or retracts.
- the piston rod is in turn connected to the push rod, whereby it is displaced axially when extending or retracting the piston rods.
- the actuator and the two lever are arranged in different horizontal planes.
- a horizontal plane is a plane that is parallel to the street level.
- the vertical axis of the vehicle is perpendicular to the horizontal plane.
- the longitudinal axis of the vehicle is parallel to the horizontal plane. Consequently, the actuator is arranged in a first horizontal plane and the respective reversing lever arranged in a second horizontal plane, wherein the two horizontal planes are axially spaced from each other.
- space which can be occupied by other vehicle components, in particular a motor or an oil pan, arises in particular in the immediate vicinity of the actuator.
- Fig. 1 is a greatly simplified schematic plan view of a steering device according to the invention.
- FIG. 2 is a schematic perspective view of the steering device according to the invention according to FIG. 1.
- a steering device for a - not shown here - vehicle on an actuator 1, which is operatively connected to an input shaft 11 and a push rod 2.
- the actuator 1 is provided to convert a rotational movement of the input shaft 11 into a translational movement of the push rod 2. Consequently, upon rotation of the input shaft 11 in a first direction of rotation, axial movement of the push rod 2 in the direction of a first wheel 8a occurs. Accordingly, when the input shaft 11 is rotated in a second direction of rotation, axial movement of the push rod 2 in the direction of a second wheel 8b occurs.
- the two wheels 8a, 8b are part of a Vehicle axle 9 and are rotated in accordance with a rotational movement on the input shaft 11 via the steering device at least partially about a respective steering axis 17a, 17b.
- the actuator 1 is provided to pressurize the push rod 2 with an axial force.
- the push rod 2 is formed in one piece and has two distal ends.
- the push rod 2 is hinged at the respective distal end with a respective coupling rod 3a, 3b.
- a respective ball joint 12a, 12b is arranged between the push rod 2 and the respective coupling rod 3a, 3b.
- the respective coupling rod 3a, 3b with a respective lever 4a, 4b articulated, with a respective ball joint 12c, 12d is also provided here.
- the respective deflection lever 4a, 4b has a first and a second leg 15a, 15a ', 15b, 15b', wherein the respective first leg 15a, 15a 'with the respective second leg 15b, 15b' is rotatably connected. Consequently, an angle enclosed between the respective two legs 15a, 15b and 15a ', 15b' is always constant.
- the respective deflection lever 4a, 4b is arranged at least partially fixed to the frame and thus at least partially movable, in particular pivotally fixed to a frame 13 of the vehicle.
- the respective deflection lever 4a, 4b on a hinge joint 10a, 10b wherein the respective hinge joint 10a, 10b allows a rotational movement of the respective deflection lever 4a, 4b on the frame 13.
- the respective reversing lever 4a, 4b is pivotally connected to a respective tie rod 5a, 5b, whereby a respective ball joint 12e, 12f is also provided here.
- the respective deflection lever 4a, 4b is provided to change a transmission ratio between the push rod 2 and the respective tie rod 5a, 5b in order to lower the axial force on the actuator 1.
- the respective deflection lever 4a, 4b generates a planar, substantially over an entire steering angle constant gear ratio between the push rod 2 and the respective tie rod 5a, 5b.
- the steering kinematics of the steering device is significantly improved.
- the respective tie rod 5a, 5b is articulated to a respective track lever 6a, 6b, wherein between the respective tie rod 5a, 5b and the respective track lever 6a, 6b, a respective ball joint 12g, 12h is arranged.
- the respective track lever 6a, 6b cooperates with a respective wheel carrier 7a, 7b in order to steer the respective wheel 8a, 8b of the vehicle axle 9 in accordance with the axial movement of the push rod 2.
- Fig. 2 shows a perspective view of the steering device shown in Fig. 1, wherein in Fig. 2 shows in particular that the actuator 1 and the two lever 4a, 4b are arranged in different horizontal planes 14a, 14b.
- the actuator 1 is arranged in a first horizontal plane 14a and the two deflection levers 4a, 4b arranged in a second horizontal plane 14b.
- the two horizontal planes 14a, 14b are spaced from each other, wherein the distance between the two horizontal planes 14a, 14b is bridged by means of the respective coupling rod 3a, 3b.
- the respective wheel 8a, 8b is received on the vehicle according to the independent suspension and connected via a respective upper link level 16a, 16a 'and a respective lower arm level 16b, 16b' to the vehicle.
- a respective shock absorber 18a, 18b and a respective spring 19a, 19b is provided in addition to the respective wheel carrier 7a, 7b, the respective wheel carrier 7a, 7b, the respective shock absorber 18a, 18b and the respective spring 19a, 19b are operatively connected to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Power Steering Mechanism (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016217773.7A DE102016217773A1 (de) | 2016-09-16 | 2016-09-16 | Lenkvorrichtung für ein Fahrzeug |
| PCT/EP2017/069982 WO2018050358A1 (de) | 2016-09-16 | 2017-08-08 | Lenkvorrichtung für ein fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3512757A1 true EP3512757A1 (de) | 2019-07-24 |
Family
ID=59564182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17749445.7A Withdrawn EP3512757A1 (de) | 2016-09-16 | 2017-08-08 | Lenkvorrichtung für ein fahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190283801A1 (de) |
| EP (1) | EP3512757A1 (de) |
| JP (1) | JP2019531959A (de) |
| DE (1) | DE102016217773A1 (de) |
| WO (1) | WO2018050358A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020123524B4 (de) | 2020-09-09 | 2022-06-23 | Schaeffler Technologies AG & Co. KG | Radmodul für ein Kraftfahrzeug |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004053722B4 (de) * | 2004-11-06 | 2020-02-20 | Zf Friedrichshafen Ag | Fahrzeug mit wenigstens einer über eine Achsschenkellenkung lenkbar ausgeführten Fahrzeugachse |
| DE102005046895A1 (de) * | 2005-09-30 | 2007-05-03 | Zf Friedrichshafen Ag | Achsschenkellenkvorrichtung eines Fahrzeugs |
| DE102006052252A1 (de) | 2006-11-03 | 2008-05-08 | Zf Friedrichshafen Ag | Einzelradaufhängung |
-
2016
- 2016-09-16 DE DE102016217773.7A patent/DE102016217773A1/de not_active Ceased
-
2017
- 2017-08-08 JP JP2019515284A patent/JP2019531959A/ja active Pending
- 2017-08-08 WO PCT/EP2017/069982 patent/WO2018050358A1/de not_active Ceased
- 2017-08-08 EP EP17749445.7A patent/EP3512757A1/de not_active Withdrawn
- 2017-08-08 US US16/332,890 patent/US20190283801A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20190283801A1 (en) | 2019-09-19 |
| DE102016217773A1 (de) | 2018-03-22 |
| WO2018050358A1 (de) | 2018-03-22 |
| JP2019531959A (ja) | 2019-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102004058698B3 (de) | Radaufhängung mit Federverstellung für Kraftfahrzeuge | |
| EP2598349B1 (de) | Achssteller eines kraftfahrzeugs | |
| DE102010003332B4 (de) | Aktive Hinterradaufhängung | |
| DE102010022313A1 (de) | Einzelradaufhängung für ein gefedertes, lenkbares Rad | |
| DE102010061008A1 (de) | Aktive-Geometrie-Steuerung-Aufhängungssystem und Betätigungsvorrichtung zum Antreiben derselben | |
| DE102011007283A1 (de) | Fahrzeug-Einzelradaufhängung für ein geringfügig lenkbares Hinterrad eines zweispurigen Fahrzeugs | |
| DE3809995A1 (de) | Hintere aufhaengungseinrichtung fuer motorfahrzeuge | |
| DE102010004320A1 (de) | Nutzfahrzeug mit einer gelenkten Achse als Schwingungstilger | |
| DE102010061018A1 (de) | Radaufhängung eines Kraftfahrzeugs | |
| EP3649038B1 (de) | Verstelleinrichtung für ein fahrwerk eines kraftfahrzeuges sowie hinterachslenkung | |
| WO2016202513A1 (de) | Gelenkverbindung und anordnung zur aufhängung eines rades | |
| DE102015220775A1 (de) | Radaufhängung für ein einzellenkbares Fahrzeugrad eines Kraftfahrzeuges | |
| EP3512757A1 (de) | Lenkvorrichtung für ein fahrzeug | |
| EP3319821B1 (de) | Doppelquerlenkerachse | |
| DE102016217778A1 (de) | Lenkvorrichtung für ein Fahrzeug | |
| DE102012209570B4 (de) | Radaufhängung für Kraftfahrzeuge | |
| DE102016005927A1 (de) | Radaufhängung eines Kraftfahrzeugs mit Sturzverstellung | |
| EP2158114B1 (de) | Schienenfahrzeug mit einstufiger federung | |
| DE102015202208A1 (de) | Verfahren zum Betrieb einer Hinterradlenkung sowie Hinterradlenkung für ein Fahrzeug | |
| DE102012011864A1 (de) | Radaufhängung | |
| EP3512756A1 (de) | Lenkvorrichtung für ein fahrzeug | |
| WO2017137186A1 (de) | Lenkbare verbundlenkerachse | |
| DE102017221585A1 (de) | Radaufhängung für ein zweispuriges Fahrzeug | |
| DE102008029337A1 (de) | Achsaufhängung für einen Achskörper eines Fahrzeugs | |
| DE102007047792A1 (de) | Einzelradaufhängung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20190218 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: B62D 7/20 20060101ALI20200706BHEP Ipc: B62D 7/09 20060101AFI20200706BHEP |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20200910 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20210121 |