EP3265363A1 - Einteilige eingangswelle - Google Patents
Einteilige eingangswelleInfo
- 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- Withdrawn
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
Description
Claims
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 (de) | 2015-03-04 | 2016-03-02 | Einteilige eingangswelle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3265363A1 true EP3265363A1 (de) | 2018-01-10 |
Family
ID=55446810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16707142.2A Withdrawn EP3265363A1 (de) | 2015-03-04 | 2016-03-02 | Einteilige eingangswelle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3265363A1 (de) |
CN (1) | CN107428363B (de) |
DE (1) | DE102015002686B4 (de) |
WO (1) | WO2016139214A1 (de) |
Families Citing this family (4)
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)
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 |
CN100577490C (zh) * | 2004-04-06 | 2010-01-06 | 日本精工株式会社 | 电动转向装置 |
EP1746011A4 (de) * | 2004-04-06 | 2007-11-07 | Nsk Ltd | Elektrische servolenkvorrichtung |
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 |
US8978814B2 (en) * | 2011-04-27 | 2015-03-17 | Honda Motor Co., Ltd. | Vehicle steering device |
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 |
WO2014200051A1 (ja) * | 2013-06-14 | 2014-12-18 | 日本精工株式会社 | 電動式パワーステアリング装置 |
-
2015
- 2015-03-04 DE DE102015002686.0A patent/DE102015002686B4/de active Active
-
2016
- 2016-03-02 EP EP16707142.2A patent/EP3265363A1/de not_active Withdrawn
- 2016-03-02 CN CN201680013163.0A patent/CN107428363B/zh active Active
- 2016-03-02 WO PCT/EP2016/054348 patent/WO2016139214A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102015002686A1 (de) | 2016-09-08 |
DE102015002686B4 (de) | 2020-07-16 |
CN107428363A (zh) | 2017-12-01 |
WO2016139214A1 (de) | 2016-09-09 |
CN107428363B (zh) | 2020-07-24 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20170822 |
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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 |
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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 |