WO2014202470A1 - Direction a cremaillere comportant deux pignons - Google Patents

Direction a cremaillere comportant deux pignons Download PDF

Info

Publication number
WO2014202470A1
WO2014202470A1 PCT/EP2014/062313 EP2014062313W WO2014202470A1 WO 2014202470 A1 WO2014202470 A1 WO 2014202470A1 EP 2014062313 W EP2014062313 W EP 2014062313W WO 2014202470 A1 WO2014202470 A1 WO 2014202470A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering
rack
pinion
motor vehicle
steering pinion
Prior art date
Application number
PCT/EP2014/062313
Other languages
German (de)
English (en)
Inventor
Aksel Maier
Anatoli Schröder
Christine GOLDBERG
Kai Vohwinkel
Original Assignee
Thyssenkrupp Presta Ag
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 Thyssenkrupp Presta Ag filed Critical Thyssenkrupp Presta Ag
Publication of WO2014202470A1 publication Critical patent/WO2014202470A1/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
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B62D3/126—Steering gears mechanical of rack-and-pinion type characterised by the rack
    • 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
    • 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

Definitions

  • the present invention relates to a motor vehicle steering with the
  • a design of electrically assisted steering gear for motor vehicles is preferred in which the supporting force is introduced via a second toothing in the rack.
  • steering gear are known in which the servo drive acts on the rack via a second steering pinion and a second toothing.
  • Such steering gears are shown in the published patent applications DE 10 2005 022 867 AI, DE 10 2007 004 218 AI and WO 2006/138209 A2. These steering gears have a relatively large volume of construction, since the servo drive is provided separately next to the engagement steering pinion / rack. In addition, the guide of the rack must be kept free of play in the area of the steering pinion via a pressure piece. This storage is with
  • a double-pinion steering gear is known in which the two steering pinions are arranged opposite to the rack at an angle of 90 ° to the rack.
  • the two steering pinions are doing an opposite rotation by means of spur gears or bevel gears mechanically positively coupled. Due to the geometric arrangement of the pinion to each other, the elimination of a complex pressure piece in the previously known form is made possible.
  • At least one steering pinion is with a
  • a motor vehicle steering system with a steering housing, in which a rack is mounted longitudinally displaceably and operatively connected to the pivoting of steerable wheels, wherein the rack is provided with a first toothed segment which meshes with a first steering pinion, comprising a first axis of rotation, and the steering pinion is rotatably connected via a steering shaft with a steering wheel, wherein the rack has a second toothed segment, which is the first toothed segment with respect to the longitudinal axis of the rack opposite, and that a second
  • Steering pinion is provided, which is in engagement with the second gear segment and has a second axis of rotation, so that the rack between the first steering pinion and the second steering pinion is arranged, provided, wherein the first steering pinion with the second steering pinion to an opposite rotation about two Spur gears is mechanically positively coupled, with a Steering pinion is arranged offset from the other steering pinion in the direction of the longitudinal axis of the rack.
  • this compact design allows a reduction of the rack diameter in the toothing area.
  • a first longitudinal section of the rack defined by the first sector gear at least partially coincides with a second longitudinal section of the rack defined by the second segment, so that it overlaps the two sector segments
  • the pinions are thus offset along the longitudinal axis of the rack, but arranged in close proximity.
  • the arrangement of the pinions is preferably described by a straight line that intersects the two axes of rotation of the pinion perpendicular and the longitudinal axis of the rack at an angle smaller than 90 °.
  • the angle thus defined is greater than 55 ° and less than 75 °. In this angular range of the distance of the pinion in the longitudinal direction of the rack is so large that arise for a coupling of the pinion by means of spur gears favorable geometric conditions.
  • the axes of rotation of the steering pinions are arranged parallel to each other and inclined to the longitudinal axis of the rack.
  • an electric servo drive is preferably provided, which engages on the steering shaft or on the first steering pinion connected to the steering shaft and / or on the second steering pinion.
  • Figure 1 a motor vehicle steering system according to the invention with two
  • FIG. 1 shows a steering system for a motor vehicle with a steering wheel 1, which is rotatably coupled to an upper steering shaft 2 and a lower steering shaft 3.
  • the lower steering shaft 3 is in turn rotatably coupled to a first steering pinion 4.
  • the steering pinion 4 meshes in a known manner with a toothed segment 5 of a rack 6.
  • the rack 6 is in one
  • Steering housing 7 slidably mounted in the direction of its longitudinal axis. At its free end, the rack 6 is connected to tie rods 8 via ball joints, not shown.
  • the tie rods 8 themselves are in a known manner via steering knuckles, each with a steered wheel 9 of the
  • a rotation of the steering wheel 1 leads via the connection of the steering shaft 2 and 3 and the pinion 4 to a
  • Torque on the steering wheel 1 is required.
  • a servomotor 11 is provided to assist the driver in this steering movement.
  • the servomotor 11 derives, depending on a control, not shown, via a second steering pinion 12 and a second toothed segment 13 a
  • the rack 6 is provided in the region of the opposing tooth segments 5 and 13 with an approximately square cross-section.
  • Tooth segments 5 and 13 are arranged on two opposite side surfaces of the rack 6 so that the axes of rotation of the first pinion 4 and the second pinion 12 extend parallel and inclined to the longitudinal axis 14 of the rack 6.
  • the rack 6 is located centrally between the pinion 4, 12 lying.
  • the first steering pinion 4 and the second steering pinion 12 must rotate in opposite directions during operation. A precisely synchronized movement is required for a precise drive of the rack 6.
  • the synchronization of Rotary movements of the pinion 4 and 12 should preferably not on the
  • the steering pinion is preferably rotatably connected to a first spur gear, while the second steering pinion is rotatably connected to a second spur gear.
  • the spur gears are engaged with each other. They have the same circumference, so that the rotational angular velocity of the two pinions is identical. This is necessary with identical trained interventions between the pinion 4 and the toothed segment 5 on the one hand and the pinion 12 and the toothed segment 13 on the other hand. It may also be provided in other embodiments that the toothing interventions are formed differently on both sides of the rack 6, in particular the two pinions have a different circumference or pitch circle. Then the synchronization must be done via appropriately adapted spur gears or other synchronization means.
  • the transmission range of the steering of Figure 1 is in the figure 2 in one
  • the pinions 4, 12 are arranged offset on opposite sides of the rack 6.
  • the position of the pinions 4, 12 is described by a straight line, which cuts both axes of rotation of the pinion perpendicular and the longitudinal axis of the rack in one point. This line intersects the longitudinal axis of the
  • the diameter of the rack 6, while maintaining the space for the bearings, can be reduced.
  • the strength of the rack can be positively influenced.
  • the offset of a pinion gear to the end of the gear lever is shorter by the offset of the pinion, resulting in a lower load in the component.
  • the present invention is not limited to those embodiments in which the servo drive 11 is directly coupled to the pinion 12. Rather, an electric servo drive on the upper steering shaft 2, the lower steering shaft 3 or on the pinion 4 act. Then a part of the torque acting on the pinion 4 is transmitted via the teeth between the bevel gears or parallel axes of rotation of the pinion via corresponding spur gears on the second steering pinion, so that at the
  • Rack 6 engaging torque is initiated via two gearing interventions. This design makes it possible to choose a steering configuration with a servomotor in the area of the steering column, which can muster very high support torque.
  • Servo drives preferably electric motors to provide, of which a
  • Servo drive acts directly on the upper steering shaft 2 or the lower steering shaft 3 or the pinion 4, while the second servo drive 11 acts on the second pinion 12. It is also conceivable and possible to represent the mechanical drive coupling of the two drives only on the teeth of the rack. In this case, the drives could be operated independently of each other, for example, to dampen games, as they can occur in particular when changing the direction of rotation. For example, one drive can always be switched first and the second drive can be switched on and off only after the load has increased to prevent backlash.
  • the offset double pinion arrangement according to the invention allows a

Landscapes

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

Abstract

L'invention concerne la direction d'un véhicule à moteur, comprenant un boîtier de direction (7), dans lequel est logée une crémaillère (6) qui coulisse dans le sens longitudinal et est reliée en liaison active à des roues (9) orientables pour le pivotement de celles-ci. La crémaillère (6) est dotée d'un premier segment denté (5) qui s'engrène avec un premier pignon de direction (4) présentant un premier axe de rotation. Le pignon de direction (4) est relié solidaire en rotation à un volant (1) par l'intermédiaire d'un arbre de direction (2, 3) . La crémaillère (6) présente un deuxième segment denté (13), qui est opposé au premier segment denté (4) par rapport à l'axe longitudinal de la crémaillère (6). Un deuxième pignon de direction (12) s'engrène dans le deuxième segment denté (13) et présente un deuxième axe de rotation, de sorte que la crémaillère (6) est montée entre le premier pignon de direction (4) et le deuxième pignon de direction (12). Selon l'invention, le premier pignon de direction (4) et le deuxième pignon de direction (12) sont mécaniquement couplés à force pour tourner dans des sens opposés par l'intermédiaire de deux pignons droits, un pignon de direction étant décalé relativement à l'autre pignon de direction dans le sens de l'axe longitudinal (14) de la crémaillère (6).
PCT/EP2014/062313 2013-06-21 2014-06-13 Direction a cremaillere comportant deux pignons WO2014202470A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013010363.0 2013-06-21
DE102013010363.0A DE102013010363A1 (de) 2013-06-21 2013-06-21 Zahnstangenlenkung mit zwei Ritzeln

Publications (1)

Publication Number Publication Date
WO2014202470A1 true WO2014202470A1 (fr) 2014-12-24

Family

ID=50933172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/062313 WO2014202470A1 (fr) 2013-06-21 2014-06-13 Direction a cremaillere comportant deux pignons

Country Status (2)

Country Link
DE (1) DE102013010363A1 (fr)
WO (1) WO2014202470A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3119155B1 (fr) * 2021-01-28 2022-12-09 Psa Automobiles Sa Système universel de direction à crémaillère pour les véhicules à conduite à gauche et les véhicules à conduite à droite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022867A1 (de) 2004-05-19 2005-12-15 Hitachi, Ltd. Elekrisches Hilfskraftlenkungssystem
WO2006138209A2 (fr) 2005-06-13 2006-12-28 Bo Cheng Systemes electriques de direction assistee
DE102007004218A1 (de) 2007-01-27 2008-09-04 Zf Lenksysteme Gmbh Hilfskraftlenkung
DE102009027468A1 (de) * 2009-07-06 2011-01-13 Robert Bosch Gmbh Kraftübertragungsanordnung
DE102010027553A1 (de) 2010-07-19 2012-01-19 Thyssenkrupp Presta Ag Doppelritzel-Lenkgetriebe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022867A1 (de) 2004-05-19 2005-12-15 Hitachi, Ltd. Elekrisches Hilfskraftlenkungssystem
WO2006138209A2 (fr) 2005-06-13 2006-12-28 Bo Cheng Systemes electriques de direction assistee
DE102007004218A1 (de) 2007-01-27 2008-09-04 Zf Lenksysteme Gmbh Hilfskraftlenkung
DE102009027468A1 (de) * 2009-07-06 2011-01-13 Robert Bosch Gmbh Kraftübertragungsanordnung
DE102010027553A1 (de) 2010-07-19 2012-01-19 Thyssenkrupp Presta Ag Doppelritzel-Lenkgetriebe
WO2012010255A1 (fr) * 2010-07-19 2012-01-26 Thyssenkrupp Presta Ag Levier de direction à double pignon

Also Published As

Publication number Publication date
DE102013010363A1 (de) 2014-12-24

Similar Documents

Publication Publication Date Title
DE102010027553B4 (de) Lenkgetriebe mit Doppelritzel
DE102012219888A1 (de) Zahnstange für eine Zahnstangenlenkung eines Kraftfahrzeuges
DE102013018436B4 (de) Lenkgetriebe mit mehreren Ritzeln
EP2943390B1 (fr) Dispositif de superposition d'angles destiné au système de direction d'un véhicule
EP0913318B1 (fr) Direction pour essieu arrière
WO2014037579A1 (fr) Crémaillère pour un système de direction d'un véhicule automobile, mécanisme de direction et pièce de pression
WO2006002790A1 (fr) Direction a superposition
EP1580327A1 (fr) Appareil pour creuserdes tranchées dans le sol
EP3265363A1 (fr) Arbre d'entrée monobloc
DE102005014560B4 (de) Überlagerungslenkung für ein Fahrzeug
WO2014202470A1 (fr) Direction a cremaillere comportant deux pignons
DE102015217050A1 (de) Nutzfahrzeuglenkung
DE2531081A1 (de) Lenk- oder steuergetriebe
AT523435B1 (de) Radantriebsmodul zum Antrieb und zur Lenkung eines Rades
CH699907B1 (de) Zahnstangengetriebe.
EP2008913B1 (fr) Engrenage de direction pour un véhicule
DE102005022488B3 (de) Lenksäule mit Verstellmechanismus
DE102017116254A1 (de) Lenkaktuator
DE3704234C2 (de) Vorrichtung zum Ausrichten einer Eingangswelle eines Lenkgetriebes
DE102023202216B3 (de) Elektrische Lenkachse für eine Arbeitsmaschine und Arbeitsmaschine
WO2017059976A1 (fr) Boîte de direction pour véhicule
DE10259387A1 (de) Lenksystem für ein Fahrzeug
DE102008043703B4 (de) Lenkgetriebe
DE102009000969A1 (de) Lenkgetriebeanordnung
DE2938987A1 (de) Zahnstangenlenkgetriebe fuer kraftfahrzeuge

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14729668

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14729668

Country of ref document: EP

Kind code of ref document: A1