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EP1896312A1 - Colonne de direction pourvue d'un dispositif d'absorption de l'energie de collision - Google Patents

Colonne de direction pourvue d'un dispositif d'absorption de l'energie de collision

Info

Publication number
EP1896312A1
EP1896312A1 EP06760776A EP06760776A EP1896312A1 EP 1896312 A1 EP1896312 A1 EP 1896312A1 EP 06760776 A EP06760776 A EP 06760776A EP 06760776 A EP06760776 A EP 06760776A EP 1896312 A1 EP1896312 A1 EP 1896312A1
Authority
EP
European Patent Office
Prior art keywords
steering column
container
opening
column according
compressible
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Withdrawn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
EP06760776A
Other languages
German (de)
English (en)
Inventor
Stefan Battlogg
Jürgen PÖSEL
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.)
Inventus Engineering GmbH
Original Assignee
Inventus Engineering GmbH
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 Inventus Engineering GmbH filed Critical Inventus Engineering GmbH
Publication of EP1896312A1 publication Critical patent/EP1896312A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
    • B62D1/192—Yieldable or collapsible columns

Definitions

  • the invention relates to a steering column, in particular for motor vehicles with an impact energy absorbing member having a container containing a flowable medium, from which the medium is expressed in an impact by at least one opening whose counterforce is controllable.
  • Energy absorbing elements are known in a variety of designs. In recent years, more and more elements are used for the energy absorption, which contain a under the influence of an electric or magnetic field, the viscosity-changing, electrorheological or magnetorheological fluid. The control of the force exerted by the opening counterforce is of great importance, since the energy absorption can be adapted to different initial conditions and conditions, so that such energy absorbing elements are mainly used in steering columns of motor vehicles.
  • several systems are in succession or simultaneously in use (belt, airbag and last but not least the steering column), which are defined to brake the driver with the least possible loads.
  • the belt and the airbag often provide no ideal counterforce, which should be compensated with a controllable impact damper in the steering column.
  • the overall result is therefore tolerated by the occupant, since the energy can be absorbed gently at injury-critical surface pressure and deceleration values.
  • the individual components can have rapidly changing gradients, but the overall result is a smooth course.
  • the flowable medium is arranged in a cylinder-piston system and can flow out through overflow openings in the piston or in the cylinder.
  • the overflow openings can be designed so that they only open when reaching a certain overpressure in the medium.
  • the energy absorbing element comprises no mechanical moving parts and no seals, and achieves this by the fact that the container receiving the flowable medium is deformable. It is from the
  • the container has a compressible container part and a non-compressible outlet channel, on which the opening is provided.
  • the surrounding area of the opening is not affected by the deformation, and the means for controlling the counterforce may preferably surround the outlet channel.
  • the compressible container part has a deformable container wall, in particular a bellows or corrugated bellows, which can be compressed in the axial direction of the outlet tube.
  • the opening is preferably covered by a closure element that releases the opening when a certain overpressure is exceeded.
  • the control of the counterforce is of great importance in order to adapt the energy absorption to different initial conditions and conditions, for example to the mass and / or the speed of the impacting object.
  • the counterforce can be adjusted or changed, for example, by increasing or decreasing the cross section of the outlet opening.
  • the compressible or deformable container is filled with a medium which changes its fluidity under the influence of an electric or magnetic field.
  • magnetorheological fluids are particularly suitable for this because, in contrast to electrorheological fluids, only low, harmless voltages are required for the construction or the modification of the field.
  • FIG. 1 shows a schematic detail of a first embodiment of a steering column with an impact energy absorbing element
  • Fig. 2 is a rotated by 180 ° oblique view of the impact energy absorbing
  • FIG. 3 is a longitudinal section through the element of FIG. 2,
  • Fig. 4 shows a second embodiment of a steering column of a motor vehicle in longitudinal section with an impact energy absorbing element
  • Fig. 5 is a schematic oblique view of the impact energy absorbing element of FIG. 4 after an impact.
  • a steering column 9 is provided in a first embodiment, as shown in FIG. 1, parallel to their longitudinally displaceable in a collision parts 14, 15 with an impact energy absorbing element, so that conventional steering columns can be used unchanged and supplemented with the element.
  • the element is connected at one end to a displaceable part 14 of the steering column 9, while the other end, which is followed by a drain line 5, is fixed to a non-displaceable part 15 of the steering column 9, which is held on a body-fixed element 7.
  • the impact energy absorbing member includes a compressible container 1 filled with a magnetorheological fluid and having a compressible reservoir portion 4 and a non-compressible discharge passage 6 axially adjacent thereto in the compression direction, at which an opening 2 is provided is.
  • the steering column 9 can shorten and the liquid contained in the container 1 is expressed upon compression of the container through the opening 2 in the drain line 5.
  • a counter force is generated which influences the expression criteria of the liquid, so that impact energy is absorbed.
  • the outlet channel 6 is surrounded by a device 10 for generating a variable magnetic field.
  • the device 10 comprises an electromagnet via which a magnetic field is generated or the magnetic field of a permanent magnet 12 is influenced.
  • the electromagnet can be buckled or unbelted via signals from sensors that monitor an impact, depending on various criteria, such as the driver's weight and sitting position. or turned off airbag, etc., are controlled by an electronic unit 16, wherein the variable magnetic field changes the viscosity of the magnetorheological fluid to be pushed through the opening, and the counterforce becomes larger or smaller.
  • the permanent magnet 12 surrounds the outlet channel 6 and is disposed within a coil 11, by means of which the magnetic flux can be attenuated or deflected.
  • the magnetorheological fluid in the outlet channel 6 is fixed and becomes flowable as soon as the coil 11 is flowed through by the current. Since the control of the coil 11 can be selected and changed, so is the viscosity of the liquid changeable and the energy consumption variable.
  • Fig. 4 shows a second embodiment of a steering column 9, the two telescopically slidable parts 14, 15, which are fixed by a shear pin od.
  • the part 15 is held on a body-fixed element 7 and the second part 14 is connected to the steering wheel 8.
  • the connected to the steering wheel 8 part 14 comprises an impact energy absorbing element with a container 1, the bottom of the second part 15 of the steering column 9 abuts, and at the outlet channel 6 front the steering wheel 8 is fixed.
  • the compressible container part 4 is circumferentially guided by the held on the body-mounted element 7 part 15 of the steering column 9.
  • the compressible container part 4 the wall of which is formed, for example, in the manner of a bellows, is compressed in an impact and the interior is reduced, an overpressure builds up initially, which opens the closure 3 and thereby releases the opening 2 at the outlet channel 6.
  • the medium is pushed out of the compressible container part 4 through the outlet channel 6.
  • the displaced medium can, if desired, be collected in a collecting container.
  • the formed in the manner of a bellows container part 4 may be made for example of metal or correspondingly reinforced plastics, wherein the corrugation or Zigzag shaping of the wall that defines bending or kinking points.
  • the maximum compression of the container part 4 is shown in FIG. 5.
  • the compressible container part 4 connected to the steering wheel 8 is compressed and compressed by the impact of the upper body, the closure 3 is thrown off the opening 2 and the contained medium is expelled.
  • the device 10 regulates the flow of the medium through the outlet channel 6 by corresponding change in viscosity in response to signals from the electronics 16, which processes various measurement data and parameters.
  • the figures show cylindrical containers 1, which are designed, for example, in the manner of a bellows and are compressible. Of course, other, compressible container 1 are executable.
  • the size of the compressible volume of the container 1, the extent of the energy absorption mitbe supportedde cross-section of the outlet channel 6, and the viscosity and the type of liquid contained depend on the intended use of the element, the substantial advantages in each case by the integrality and the reduction in volume of the Container 1 are given without moving parts.
  • the compression length may be about 100 mm in the embodiment shown in FIG.

Landscapes

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

Abstract

Colonne de direction pourvue d'un élément d'absorption de l'énergie de collision qui comporte un récipient (1) contenant un milieu fluide et pouvant être comprimé. En cas de collision, ledit milieu est poussé par un orifice (2) dont la force antagoniste peut être régulée par un dispositif (10).
EP06760776A 2005-06-30 2006-06-30 Colonne de direction pourvue d'un dispositif d'absorption de l'energie de collision Withdrawn EP1896312A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT11092005 2005-06-30
PCT/AT2006/000280 WO2007002970A1 (fr) 2005-06-30 2006-06-30 Colonne de direction pourvue d'un dispositif d'absorption de l'energie de collision

Publications (1)

Publication Number Publication Date
EP1896312A1 true EP1896312A1 (fr) 2008-03-12

Family

ID=36940346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06760776A Withdrawn EP1896312A1 (fr) 2005-06-30 2006-06-30 Colonne de direction pourvue d'un dispositif d'absorption de l'energie de collision

Country Status (3)

Country Link
US (1) US20080163716A1 (fr)
EP (1) EP1896312A1 (fr)
WO (1) WO2007002970A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5691195B2 (ja) 2010-03-01 2015-04-01 ソニー株式会社 マイクロチップ及び微小粒子分析装置
DE102010020086B4 (de) 2010-05-10 2015-07-23 Inventus Engineering Gmbh Regelverfahren für einen Energieabsorber
DE102010020087B4 (de) * 2010-05-10 2013-05-16 Thyssenkrupp Presta Ag Regelverfahren für einen steuerbaren Energieabsorber
US9342108B2 (en) 2011-09-16 2016-05-17 Apple Inc. Protecting an electronic device
US9432492B2 (en) * 2013-03-11 2016-08-30 Apple Inc. Drop countermeasures for electronic device
WO2014152913A1 (fr) * 2013-03-14 2014-09-25 A&P Technology, Inc. Tube déformable absorbant l'énergie
US9505032B2 (en) 2013-03-14 2016-11-29 Apple Inc. Dynamic mass reconfiguration
US9715257B2 (en) 2014-04-18 2017-07-25 Apple Inc. Active screen protection for electronic device
RU2650309C1 (ru) * 2016-12-20 2018-04-11 федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" Травмобезопасная рулевая колонка транспортного средства

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886295A (en) * 1988-12-05 1989-12-12 General Motors Corporation Vehicle occupant protection system
DE19904530A1 (de) * 1999-02-04 2000-08-10 Bayerische Motoren Werke Ag Variabler Stoßabsorber mit Sicherheitsfunktion
EP1361137A2 (fr) * 2002-05-07 2003-11-12 ThyssenKrupp Presta AG Direction de sécurité et méthode de mise en oeuvre
EP1060974B1 (fr) * 1999-06-16 2004-03-24 Ford Global Technologies, Inc. Colonne de direction avec resistance variable au déformation
DE102004009726A1 (de) * 2004-02-25 2005-09-29 Nacam Deutschland Gmbh Vorrichtung zur Absorbtion von Stoßenergie in einer Kraftfahrzeuglenksäuleneinheit

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JPS5189630U (fr) * 1975-01-14 1976-07-17
DE2606640C2 (de) * 1976-02-19 1985-12-19 Daimler-Benz Ag, 7000 Stuttgart Im Aufprallbereich der Knie von Fahrer und Beifahrer angeordnetes Deformationsglied
JPS5451739U (fr) * 1977-08-15 1979-04-10
US4531619A (en) * 1982-09-24 1985-07-30 Eckels Robert E Collapsible steering column
KR960033968A (ko) * 1995-03-22 1996-10-22 배순훈 자동차의 충격완화용 압축식 핸들
DE19511867C1 (de) * 1995-03-31 1996-05-02 Daimler Benz Ag Stülprohr-Energieabsorptionselement
US5870930A (en) * 1996-09-03 1999-02-16 Means Industries Steering column assembly
DE59809761D1 (de) * 1997-04-16 2003-11-06 Volkswagen Ag Lenksäule für Insassenschutzeinrichtungen und Sicherheitslenkungen
US7165786B1 (en) * 1998-12-21 2007-01-23 Douglas Autotech Corporation Non-newtonian flow fluid-locking mechanism for vehicles
US6296280B1 (en) * 1999-11-02 2001-10-02 Trw Inc. Adaptive collapsible steering column
US6279952B1 (en) * 2000-01-14 2001-08-28 Trw Inc. Adaptive collapsible steering column
DE10001420A1 (de) * 2000-01-15 2001-07-19 Schenck Ag Carl Passives Kraftelement auf Basis elektrorheologischer Flüssigkeiten
US6641167B2 (en) * 2001-10-16 2003-11-04 Delphi Technologies, Inc. Responsive E/A system for steering columns
US6916044B2 (en) * 2003-07-08 2005-07-12 Daimlerchrysler Corporation Steering column/airbag tunable impact absorption system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886295A (en) * 1988-12-05 1989-12-12 General Motors Corporation Vehicle occupant protection system
DE19904530A1 (de) * 1999-02-04 2000-08-10 Bayerische Motoren Werke Ag Variabler Stoßabsorber mit Sicherheitsfunktion
EP1060974B1 (fr) * 1999-06-16 2004-03-24 Ford Global Technologies, Inc. Colonne de direction avec resistance variable au déformation
EP1361137A2 (fr) * 2002-05-07 2003-11-12 ThyssenKrupp Presta AG Direction de sécurité et méthode de mise en oeuvre
DE102004009726A1 (de) * 2004-02-25 2005-09-29 Nacam Deutschland Gmbh Vorrichtung zur Absorbtion von Stoßenergie in einer Kraftfahrzeuglenksäuleneinheit

Non-Patent Citations (1)

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Title
See also references of WO2007002970A1 *

Also Published As

Publication number Publication date
WO2007002970A1 (fr) 2007-01-11
US20080163716A1 (en) 2008-07-10

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