EP3265363A1 - Arbre d'entrée monobloc - Google Patents

Arbre d'entrée monobloc

Info

Publication number
EP3265363A1
EP3265363A1 EP16707142.2A EP16707142A EP3265363A1 EP 3265363 A1 EP3265363 A1 EP 3265363A1 EP 16707142 A EP16707142 A EP 16707142A EP 3265363 A1 EP3265363 A1 EP 3265363A1
Authority
EP
European Patent Office
Prior art keywords
steering
output shaft
shaft
power steering
steering system
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Withdrawn
Application number
EP16707142.2A
Other languages
German (de)
English (en)
Inventor
Ulrich Schlegel
Manuel BÜCHEL
Patrick RENGGLI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
ThyssenKrupp Presta AG
Original Assignee
ThyssenKrupp AG
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 AG, ThyssenKrupp Presta AG filed Critical ThyssenKrupp AG
Publication of EP3265363A1 publication Critical patent/EP3265363A1/fr
Withdrawn legal-status Critical Current

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
    • B62D5/0409—Electric motor acting on the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque

Definitions

  • the present invention relates to a power steering system for a motor vehicle having the features of the preamble of claim 1.
  • the steering column of a motor vehicle is both the holder of the torque-transmitting steering shaft, also called steering shaft, and the steering wheel in the motor vehicle and the mechanical connection between the steering wheel of the motor vehicle and the steering gear.
  • Steering columns with motor steering assistance devices, so-called servomotors or servo drives, the steering shaft driving, are referred to as power steering or power steering. They support the steering torque applied by a driver by imposing an additional torque on the steering shaft.
  • the steering power assistance of a power steering can be done by steering torque overlay.
  • the type is suitable, in which the servo drive acts directly on the steering shaft. This design is called “column driven power assisted steering” or ColPAS for short.
  • a plurality of steering columns is known in which the steering column has a steering spindle composed of a plurality of steering spindle parts, wherein the steering column is telescopic and can be compressed in the event of a crash in their length.
  • a steering column for a motor vehicle which has a steering shaft of two torque-transmitting and interconnected steering spindle parts, wherein the parts are connected for damping vibrations transmitted via the steering shaft by means of a damping body.
  • the input shaft of the steering support device and the steering shaft of the steering column are designed as two separate components, which are assembled only during assembly of the steering column to form an assembly. This assembly is time consuming and it must be made of a variety of components with tight manufacturing tolerances, resulting in undesirable costs.
  • An auxiliary power steering system for a motor vehicle comprising a rotatably mounted steering spindle, having a first end region and a second end region, the first end region having means for connecting a steering wheel, further comprising a motor steering assisting device with a transmission, an electric motor and an output shaft, wherein the output shaft is drivable via the gear of the electric motor, is provided, wherein the output shaft is directly connected to the second end portion of the steering shaft via a torsion bar.
  • the steering shaft is configured continuously from the steering wheel to the transmission and thus also acts as an input shaft of the steering assistance device.
  • the torsion bar is arranged with its one end in a central bore of the output shaft of the transmission and is rotatably connected to the output shaft. Furthermore, it is advantageous if the torsion bar is received with its other end in a central bore of the second end portion of the steering shaft and is also rotatably connected thereto.
  • the steering spindle in its second end region on an area with a curved toothing, in the central Drill hole of the output shaft is received, wherein the central bore in the region of the receptacle has a corresponding profile for forming an overload protection, but which allows a small rotation of the two components to each other. Due to the overload protection destruction of the torsion bar is prevented even for high torque to be transmitted.
  • the curved toothing is formed in the shape of a trefoil profile tube.
  • the transmission is a worm gear and the output shaft is rotatably connected to a worm wheel of the worm gear.
  • the output shaft preferably passes through the transmission. It is advantageous if the output shaft is connected at its end remote from the steering spindle via a joint with a steering intermediate shaft and thus acts as an output shaft.
  • a torque sensor is preferably arranged.
  • the steering shaft and the output shaft of the transmission are hollow shafts.
  • Fig. 1 a schematic representation of a power steering system for
  • Fig. 2 a spatial view of the steering column in the area of
  • Fig. 3 a spatial view of the steering column in the area of
  • FIG. 4 a three-dimensional view of the steering column with a transmission of the steering assistance device
  • Fig. 5 an exploded view of a connection of a steering spindle and an output shaft of the transmission
  • Fig. 6 an enlarged view of the output shaft of the
  • Fig. 7 an exploded view of the connection of the steering spindle and the output shaft of the transmission with a torsion bar
  • Fig. 8 a longitudinal section through the connection of the steering shaft with the
  • Fig. 9 a plan view of the gearbox and the torsion bar, as well
  • FIG. 10 a cross section along the line A-A of FIG. 8.
  • the steering shaft 2 is used to transmit the executed by a driver of the motor vehicle on the steering wheel 3 steering movements on a rack and pinion steering gear 31, comprising a steering pinion 4 and a Rack 5.
  • the rack and pinion steering gear 31 the rotational movement of the steering shaft 2 in a translational movement of the rack 5, whereby the hinged to a tie rod 6 wheel 7 of the vehicle performs a steering angle.
  • a steering assist device 30 is provided.
  • the steering shaft 2 is connected at a first end region 8 (see FIG.
  • the transmission 10 drives the output side via a universal joint 11 to a steering intermediate shaft 12, which in turn is connected via a universal joint 13 with a lower steering shaft 14.
  • the transmission 10 carries on its housing an electric motor 15.
  • the steering column 1 is attached via a support unit 16 to the body of the vehicle.
  • the steering support means 30 are shown enlarged. In this case, the transmission 10 and the electric motor 15 is shown.
  • the transmission 10 is designed as a worm gear with a worm wheel 17 and a worm 18.
  • the transmission 10 For torque transmission engages the driven by the electric motor 15 screw 18 in the worm wheel 17, which in turn rotatably connected to an output shaft 19 of the transmission 10 is connected.
  • the transmission 10 is surrounded by a transmission housing 20 which is bolted to a housing 21 of the servomotor.
  • FIGS 4, 5, 6 and 7 show the connection of the one-piece steering shaft 2 with the transmission 10.
  • the steering shaft 2 extends from a steering wheel connection 22, which is arranged on the first end portion 8 of the steering shaft, to
  • a movement of the steering shaft 2 relative to the output shaft 19 of the transmission 10 leads to a torsional moment on the torsion bar 23.
  • the torsional moment of the torsion bar 23 can be measured by a known torque sensor and determines the desired steering assistance.
  • the steering shaft 2 acts as an input shaft of the motor steering assistance device 30.
  • the output shaft 19 is connected at its end remote from the steering spindle via a universal joint 11 with the steering intermediate shaft 12.
  • the steering intermediate shaft 12 has a length-compensating and torque-transmitted
  • Telescopic handle The Telescopic linkage compensates for vehicle tolerances and elastic deformations under dynamic load or to compensate for longitudinal movement on the steering column.
  • Steering intermediate shaft 12 has at its transmission far end again a universal joint 13 for connection to the lower steering shaft 14.
  • the connection between the steering shaft 2 and the output shaft 19 of the transmission 10 is shown in detail in longitudinal section of Figure 8.
  • Both the steering shaft 2 and the output shaft 19 are formed as hollow shafts and arranged concentrically to a common longitudinal axis 200.
  • the output shaft 19 is rotatably connected to the surrounding worm wheel 17.
  • the inner diameter of the output shaft 19 is selected so that the output shaft 19 surrounds the steering shaft 2 at its second end portion 9.
  • the torsion bar 23 is encompassed by both the steering shaft 2 and the output shaft 19. At a first end 24 of the torsion bar 23 is rotatably connected to the steering shaft 2 and at a second end 25 rotatably connected to the output shaft 19.
  • the outer diameter of the torsion bar 23 is smaller than the inner diameter of the steering shaft 2.
  • the steering shaft 2 has on its outer side 201 in the circumferential direction of a curved toothing.
  • the output shaft 19 is provided on its inner side 191 with a corresponding profile for forming an overload protection 27.
  • Figures 9 and 10 show in detail the overload protection 27.
  • the arc toothing as shown, formed in the form of a trefoil profile tube.
  • the steering shaft 2 and the output shaft 19 engage each other such that between the outer side 201 of the steering shaft 2 and the inner side 191 of the output shaft 19 normally a small circumferential gap is formed, so that a small rotation of the two components against each other is possible.
  • This relative movement is measured by means of the torsion bar 23 and the associated sensor and further processed to determine the steering assistance.
  • Steering support device 30 or done in a workshop abuse test or in special driving situations. Due to the corresponding profiles, the torque-transmitting connection of the steering shaft 2 with the output shaft 19 is ensured.
  • the steering shaft 2 is preferably a tube that has been hammered or radially deformed, for example.
  • the steering column 1 according to the invention with the one-piece steering shaft 2 can be produced inexpensively by the reduced number of components and the
  • Steering spindle 2 and the gear 10 are to be mounted in a simple manner.
  • the natural frequency of the system is increased by the continuous from the steering wheel to the transmission steering shaft 2.

Landscapes

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

Abstract

La présente invention concerne une direction assistée (1) pour un véhicule à moteur, qui comprend un arbre de direction (2) monté rotatif et pourvu d'une première zone d'extrémité (8) et d'une seconde zone d'extrémité (9), la première zone d'extrémité (8) présentant des moyens d'accouplement à un volant, et un dispositif d'assistance de direction (30) à moteur comprenant une transmission (10), un moteur électrique (15) et un arbre de sortie (19), l'arbre de sortie (19) pouvant être entraîné par le moteur électrique (15) par l'intermédiaire de la transmission (10), et l'arbre de sortie (19) étant accouplé directement à la seconde zone d'extrémité (9) de l'arbre de direction (2) par l'intermédiaire d'une barre de torsion (23).
EP16707142.2A 2015-03-04 2016-03-02 Arbre d'entrée monobloc Withdrawn EP3265363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015002686.0A DE102015002686B4 (de) 2015-03-04 2015-03-04 Einteilige Eingangswelle
PCT/EP2016/054348 WO2016139214A1 (fr) 2015-03-04 2016-03-02 Arbre d'entrée monobloc

Publications (1)

Publication Number Publication Date
EP3265363A1 true EP3265363A1 (fr) 2018-01-10

Family

ID=55446810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16707142.2A Withdrawn EP3265363A1 (fr) 2015-03-04 2016-03-02 Arbre d'entrée monobloc

Country Status (4)

Country Link
EP (1) EP3265363A1 (fr)
CN (1) CN107428363B (fr)
DE (1) DE102015002686B4 (fr)
WO (1) WO2016139214A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10793183B2 (en) * 2017-12-22 2020-10-06 Trw Automotive U.S. Llc Torque overlay steering apparatus
DE102018205606A1 (de) * 2018-04-13 2019-10-17 Robert Bosch Gmbh Lenkgetriebe für ein Lenksystem eines Kraftfahrzeugs
CN114684246B (zh) * 2020-12-30 2023-08-08 比亚迪股份有限公司 车辆转向系统和具有其的车辆
CN112947377B (zh) * 2021-02-25 2023-04-07 同济大学 一种自动驾驶汽车整车在环测试的目标车运动承载平台

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3951873B2 (ja) * 2001-12-21 2007-08-01 株式会社デンソー 電動パワーステアリング装置
DE102005007357A1 (de) * 2004-02-17 2005-09-08 Hitachi, Ltd. Hilfskraflenkungs-Vorrichtung eines Elektromotors
US20070209864A1 (en) * 2004-04-06 2007-09-13 Toru Segawa Electric Power Steering Apparatus
CN100577490C (zh) * 2004-04-06 2010-01-06 日本精工株式会社 电动转向装置
GB0905294D0 (en) * 2009-03-27 2009-05-13 Trw Ltd Gearbox assembly for electric power steering systems
DE102010049999A1 (de) * 2010-10-29 2012-05-03 Volkswagen Ag Elektrische Lenkunterstützungsvorrichtung zur Anordnung an einer Lenksäule eines Kraftfahrzeugs
EP2703253B1 (fr) * 2011-04-27 2015-09-30 Honda Motor Co., Ltd. Dispositif de direction de véhicule
DE102011050683A1 (de) 2011-05-27 2012-11-29 Thyssenkrupp Presta Aktiengesellschaft Lenksäule für ein Kraftfahrzeug
JP5767560B2 (ja) * 2011-10-24 2015-08-19 株式会社ショーワ 電動パワーステアリング装置
DE102012109125A1 (de) * 2012-09-27 2014-03-27 Zf Lenksysteme Gmbh Lenkvorrichtung mit Winkelbegrenzung für Torsionsstab
JP6052409B2 (ja) * 2013-06-14 2016-12-27 日本精工株式会社 電動式パワーステアリング装置

Also Published As

Publication number Publication date
DE102015002686B4 (de) 2020-07-16
CN107428363A (zh) 2017-12-01
CN107428363B (zh) 2020-07-24
DE102015002686A1 (de) 2016-09-08
WO2016139214A1 (fr) 2016-09-09

Similar Documents

Publication Publication Date Title
EP3134308B1 (fr) Colonne de direction pour vehicule
EP3743324B1 (fr) Colonne de direction pour un véhicule automobile
DE102010027553B4 (de) Lenkgetriebe mit Doppelritzel
DE3881197T2 (de) Servolenkeinrichtung.
EP3148860B1 (fr) Arbre de direction d'un véhicule automobile
DE3886375T2 (de) Motorgetriebene servolenkvorrichtung.
EP3253644B1 (fr) Dispositif destiné à appliquer un couple d'assistance à un arbre de direction et direction assistée electroméchanique
EP3038880B1 (fr) Arbre de direction de véhicule automobile
DE102013018436B4 (de) Lenkgetriebe mit mehreren Ritzeln
WO2020058025A1 (fr) Colonne de direction et système de direction à commande par câble
EP3265363A1 (fr) Arbre d'entrée monobloc
WO2006002790A1 (fr) Direction a superposition
WO2018091200A1 (fr) Système de direction
EP2585357B1 (fr) Arbre de direction soutenu en rotation
DE102004006835A1 (de) Lenksystem für ein Fahrzeug
WO2019086536A1 (fr) Direction électromécanique de véhicule à moteur comprenant un assemblage mécanique stable, compact et étanche d'éléments de boîtier par soudage par friction-malaxage
DE102007029000A1 (de) Zahnstange für eine Servolenkung
WO2014019694A1 (fr) Mécanisme de direction pour un véhicule à moteur
DE102017116254A1 (de) Lenkaktuator
WO2019234013A1 (fr) Direction de véhicule automobile électromécanique comportant des éléments de boîtier reliés par un joint à ajustement serré conique
DE102021107548A1 (de) Elektrisches ritzel-servolenkungssystem
DE102014108948B3 (de) Servolenkbaugruppe mit Lenkmomentüberlagerung
DE102019119128A1 (de) Lenkgetriebe für ein Kraftfahrzeug
WO2023174589A1 (fr) Tige de direction pour un mécanisme de direction d'un système de direction de véhicule automobile à commande électrique, et mécanisme de direction d'un système de direction de véhicule automobile à commande électrique
DE102005021042B4 (de) Welle-Nabe-Verbindung, insbesondere einer Kraftfahrzeuglenkung

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20170822

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)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: BUECHEL, MANUEL

Inventor name: SCHLEGEL, ULRICH

Inventor name: RENGGLI, PATRICK

17Q First examination report despatched

Effective date: 20200116

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THYSSENKRUPP AG

Owner name: THYSSENKRUPP PRESTA AG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20200716