WO2021180610A1 - Colonne de direction pour un véhicule automobile - Google Patents

Colonne de direction pour un véhicule automobile Download PDF

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Publication number
WO2021180610A1
WO2021180610A1 PCT/EP2021/055705 EP2021055705W WO2021180610A1 WO 2021180610 A1 WO2021180610 A1 WO 2021180610A1 EP 2021055705 W EP2021055705 W EP 2021055705W WO 2021180610 A1 WO2021180610 A1 WO 2021180610A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
axial
sleeve
face
sliding sleeve
Prior art date
Application number
PCT/EP2021/055705
Other languages
German (de)
English (en)
Inventor
Manuel Lampert
Alexander WESELÝ
Wolfgang Xander
Original Assignee
Thyssenkrupp Presta Ag
Thyssenkrupp 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, Thyssenkrupp Ag filed Critical Thyssenkrupp Presta Ag
Publication of WO2021180610A1 publication Critical patent/WO2021180610A1/fr

Links

Classifications

    • 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
    • B62D1/195—Yieldable supports for the steering column

Definitions

  • the invention relates to a steering column for a motor vehicle, comprising an actuating unit with a rotatably mounted steering shaft which is held by a support unit which has at least one sliding sleeve which has a first end face and a second end face and a through opening extending therebetween in the direction of an axis has, through which a fastening means for connection to a body of a motor vehicle can be passed, wherein an axial clamping surface of the fastening means is directed in the direction of the axis against the first end face and the support unit is held on surfaces formed between the Stirnflä surfaces, relative to which it is in Crash case is movable transversely to the axis.
  • the invention relates to a method for assembling such a steering column, to summarizing an actuating unit with a rotatably mounted steering shaft, which is held by a support unit which has at least one sliding sleeve, which has a first end face and a second end face and one in between in the direction of a Axis extending through opening through which a fastening means for connection to a motor vehicle is passed and braced against the body of the motor vehicle, an axial clamping surface of the fastening means being braced in the direction of the axis against the first end face and the second end face being braced against the body, whereby an edge portion of the support unit is axially clamped between axial sliding surfaces of the sliding sleeve facing away from the end faces.
  • the steering column of a motor vehicle comprises an actuating unit in which the steering spindle is rotatably mounted about its longitudinal axis, at the rear end of which in the direction of travel a steering wheel for inputting steering commands is attached.
  • the actuating unit is usually attached to a cross member of the body of the vehicle by means of a support unit.
  • the steering column To improve occupant safety, it is known to design the steering column to be flexible in the longitudinal direction if, in the event of a crash, a body hits the steering wheel at high speed.
  • the high crash energy introduced into the steering shaft causes it to break away and a sliding displacement of the support unit relative to the body, with an energy absorption of the kinetic crash energy through friction between the support unit and body and / or deformation of energy absorption elements can take place in order to generate a controlled deceleration.
  • a sliding sleeve of the generic type comprises an essentially tubular or sleeve-shaped sliding body which can be fixed to the vehicle by means of a fastening means, for example a fastening bolt screwed into the cross member of the body through an axial passage opening of the sliding sleeve.
  • the support unit has a corresponding sliding guide, for example an elongated hole extending in the longitudinal direction, in which said sliding sleeve can slide along in the event of a crash with energy absorption by friction, and enables a Relativbewe movement of the steering column relative to the body.
  • a corresponding sliding guide for example an elongated hole extending in the longitudinal direction, in which said sliding sleeve can slide along in the event of a crash with energy absorption by friction, and enables a Relativbewe movement of the steering column relative to the body.
  • an axial clamping surface of the fastener is braced against a first end face of the sliding sleeve, and one of the first support surface turned to second end face of the sliding sleeve is braced by the fastener against the Ka ros series.
  • Between the two said end faces on the sliding sleeve angeord designated sliding surfaces are pressed against the support unit by the bracing of the fastening element, so that a frictional connection is created. In the event of a crash, the holding force of this frictional connection is overcome and a relative movement is made possible.
  • a steering column for a motor vehicle comprising an actuating unit with a rotatably ge superimposed steering shaft, which is held by a support unit which has at least one sliding sleeve which has a first end face and a second end face and a through opening extending there between in the direction of an axis has, through which a fastening means for connection to a body of a motor vehicle can be passed, wherein an axial clamping surface of the fastening means is directed in the direction of the axis against the first end face and the support unit is held on between the end faces gestilde th sliding surfaces, relative to which it is in Is movable transversely to the axis in the event of a crash, it is proposed according to the invention that a support sleeve is arranged coaxially in the through opening of the sliding sleeve, which has a first axial support surface and a second axial support surface arranged relative to it at an axial support distance, the sliding sleeve is arranged between
  • the clamping force exerted axially by the fastening means is transmitted via the support sleeve supported between the clamping surface and the body.
  • the support sleeve preferably has a Rohrab section, which serves as a tubular support portion and extends coaxially through the fürgangsöff voltage of the sliding sleeve, and which in turn has the through opening through which the fastening element is passed.
  • the fastening element can be designed as a threaded bolt, also referred to as a screw, which can be screwed into a corresponding threaded hole in the body with a thread to form a screw connection, and which preferably has an axial clamping surface on a head from which the perpendicular Thread extends, which is therefore directed against the body.
  • the clamping surface can be axially braced against the first axial support surface, whereby the support sleeve is braced against the body.
  • the support sleeve has an end bearing surface. This is opposite the first support surface, with respect to the sliding sleeve on the outside of the support sleeve. This is arranged opposite one another with respect to the first axial support surface at the other end of the support sleeve and directed outwards, so that this end-face bearing surface is pressed against the body when the screw connection is tightened.
  • the first support surface is spaced apart from the first end surface in the direction of the axis.
  • the distance between the first support surface and the first end surface is preferably greater than or equal to 0.1 mm, preferably greater than 0.2 mm. It can be provided that the distance is less than 2mm.
  • the support sleeve has a second axial support surface which points in the same axial direction as the first support surface, that is to say also axially opposite the clamping surface of the fastening element.
  • the first support surface and the second support surface are arranged step-shaped in the axial direction, the axial distance being the axial support distance according to the invention, which corresponds to the step height.
  • the sliding sleeve is fixed to the support sleeve by means of the fastening element.
  • the preferably tubular support section extends between the two support surfaces through the through-opening, and the sliding sleeve is arranged axially between the clamping surface of the fastening element and the second axial support surface of the support sleeve.
  • the clamping surface of the fastening element which is formed, for example, by an axial surface on the head of a threaded bolt, is directed axially against said first support surface on one end face of the support sleeve, and parallel to it against the first axial end surface of the sliding sleeve. With its second axial end face, the sliding sleeve is supported against the second axial support surface of the support sleeve. When the screw connection is tightened, the clamping surface is now clamped flush against the first axial support surface of the support sleeve, and parallel to this against the first end surface of the sliding sleeve.
  • the support sleeve is braced against the Ka ros series with the entire axial clamping force exerted by the fastening element, and the sliding sleeve is clamped at the same time between the fastening element and the support sleeve.
  • An advantage of the invention is that the axial force with which the sliding element is clamped between the support sleeve and the fastening element, which can be referred to as the clamping force, can be given independently of the clamping force with which the support sleeve is attached to the fastening element Body rie is set.
  • the axial receiving space for the sliding sleeve is fixed by the support spacing between the first and the second support surface of the support sleeve.
  • the clamping force can be specified relatively small by using a relatively soft, elastic material as and / or a relatively small oversize of the axial length of the sliding sleeve, which corresponds to the axial distance between the two end faces, and by a larger oversize and / or a higher rigidity or lower elasticity can be set higher.
  • the attachment to the body can take place independently of the clamping force exerted on the sliding sleeve.
  • the energy absorption characteristics can be specified more easily, and impairment caused by assembly can be largely eliminated.
  • the support sleeve has a support plate which has the second axial support surface.
  • the support plate can be formed protruding radially outwardly with respect to the axis, for example as a circumferential collar, at the end of the preferably tubular support section opposite the first support surface.
  • the second axial support surface is arranged on the support element with the same normal direction as the first support surface.
  • the preferably tubular support section which is arranged coaxially in the through opening of the sliding sleeve, extends between the two support surfaces.
  • the support plate On the outside of its end face opposite the second axial support surface, the support plate has an axial bearing surface which can be braced against the body by means of the fastening means.
  • the sliding sleeve has radially protruding collar sections which have the end faces and axial sliding faces.
  • the collar sections can preferably be arranged as encircling annular disks at both axial ends of a tubular sliding sleeve section and protrude radially outward in the manner of a flange.
  • On the outside end face, the collar sections have the first and second end faces.
  • Axial sliding surfaces can preferably be formed on their inner sides which are axially opposite to the end faces and which are axially opposite one another. An edge section of a plate-shaped holding section of the carrier unit running in the longitudinal direction can be frictionally clamped between these sliding surfaces.
  • the sliding sleeve has a sleeve section which is inserted into an elongated hole in the support unit with longitudinal edges extending in a longitudinal direction.
  • the sleeve section also referred to as a sliding sleeve section, can extend axially through an elongated hole that is open or closed in the longitudinal direction and, in the event of a crash, can slide in the elongated hole in a guided manner in the longitudinal direction.
  • collar sections can be attached to the sleeve section, preferably in both end regions. The collar sections protrude radially over the sleeve section and have sliding surfaces on their oppositely directed axial surfaces.
  • the axial distance between the sliding surfaces which is determined by the length of the sleeve section, is selected such that a plate-shaped holding section of the support unit can be received and clamped therebetween, for example an edge section of an elongated hole. Because the sliding sleeve is clamped according to the invention between the fastening means and the support sleeve, the collar sections are axially loaded against one another and as a result the support unit is frictionally clamped between the sliding surfaces.
  • the support sleeve can have a material that is more rigid than the sliding sleeve.
  • the support sleeve can for example be at least partially made of a metallic material, for example steel. This ensures a high level of strength and / or rigidity, which enables the support sleeve to be clamped sufficiently firmly to the body, even with small dimensions.
  • the sliding sleeve can for example have a plastic that has a lower rigidity and / or strength than a metallic material.
  • the sliding sleeve between tween the fastening means and the support sleeve is initially compressed so far axially, with axial and / or plastic deformations can occur, until the clamping surface rests against the first axial support surface of the support sleeve, and the axial dimension of the sliding sleeve was the Stützab corresponds to the support sleeve.
  • the support sleeve can be formed in one piece and / or the sliding sleeve can be formed in one piece.
  • the support sleeve can be made available efficiently and with the required properties as a sheet metal part.
  • the sliding sleeve can be manufactured, for example, as a one-piece injection-molded part from a thermoplastic elastomer or a thermoplastic.
  • the invention further comprises a method for assembling a steering column, comprising an actuating unit with a rotatably mounted steering shaft, which is held by a support unit, which has at least one sliding sleeve, which has a first end face and a second end face and one extending therebetween in the direction of an axis fürgangsöff voltage through which a fastener for connection to a motor vehicle is carried out and braced against the body of the motor vehicle, with an axial clamping surface of the fastener ver tensioned in the direction of the axis against the first end face and the second end face is braced against the body , whereby an edge section of the support unit is axially clamped between axial sliding surfaces of the sliding sleeve facing away from the end faces, the invention providing that in the unmounted state of the sliding sleeve the first end face and the second end face have an axial distance have that a support sleeve is inserted into the sliding sleeve in the unmounted state,
  • the support distance between the first and second axial support surface of the support sleeve is defined, and which corresponds to the axial distance between the clamping surface of the fastening means and the second support surface of the support sleeve in the installed state, and by the axial dimension of the sliding sleeve, the Axialab stood the two end support surfaces in the unmounted, undeformed state vorgege ben how much the sliding sleeve is axially compressed during assembly.
  • the holding force of the frictional connection between the support unit and the sliding sleeve can be given in advance.
  • the sliding sleeve can preferably be compressed plastically and / or elastically ge between the clamping surface and the second support surface.
  • the compression takes place in a path-controlled manner in that the sliding sleeve is compressed axially by the defined path difference between the support distance and the axial distance.
  • the frictional force and thus the energy absorption behavior at a relative displacement of the steering column relative to the body in the event of a crash can be easily and precisely specified by the relati ven dimensions of the support sleeve and sliding sleeve. This simplifies the installation, and the holding force of the frictional connection and thus the crash level can be maintained in a reproducible manner.
  • the second end face is braced against the body, this can be done either directly, i.e. the second end face is in direct contact with the body, or indirectly, with the interposition of one or more components.
  • a washer and / or a bracket can be placed between the second end face and the body.
  • the body can comprise a vehicle cross member to which the steering column is fixed.
  • a sliding sleeve can be provided separately or already attached to a support unit, for example the longitudinal edges of an elongated hole being received between axial sliding surfaces on radially protruding collar sections of the sliding sleeve.
  • a support sleeve with a tubular support section can then be inserted into the through opening from the body side until a second axial support surface formed on a support plate rests against the second end surface of the sliding sleeve.
  • a fastening means preferably a threaded bolt, is then pushed through the through opening of the support sleeve and screwed into a threaded hole in the body.
  • the clamping surface arrives at the bottom of a head of the fastener directed against the body th first in contact with the first end face of the sliding sleeve.
  • the clamping surface exerts axial pressure on this first end face, as a result of which the sliding sleeve between the clamping surface and the second axial support surface is compressed with the clamping force until the clamping surface abuts against the first support surface.
  • the clamping force is not increased any further, but the support sleeve is clamped to the body by the increasing clamping force until a predetermined clamping force is reached, for example can be given by the tightening torque of a fastener designed as a threaded bolt.
  • Figure 1 shows a steering column according to the invention in a schematic perspective
  • FIG. 2 is a view from above of the steering column according to Figure 1,
  • FIG. 3 shows a cross section A-A according to Figure 2
  • FIG. 4 shows an enlarged partial view of the section according to FIG. 3 in a first partially assembled state
  • FIG. 5 shows the partial view according to FIG. 4 in a further partially assembled state
  • FIG. 6 shows the partial view according to FIG. 5 in the fully assembled final state.
  • FIG. 1 shows a steering column 1 as a whole, which has a support unit 2 and an actuating unit 3 held by it.
  • the actuating unit 3 has a casing unit 31 in which a steering spindle 32 is rotatably mounted about a longitudinal axis L running in the longitudinal direction. At the rear end in relation to the direction of travel, the steering spindle 32 has a fastening section 33 for attaching a steering wheel, not shown here.
  • the support unit 2 has essentially plate-shaped holding sections 21 for attaching the steering column 1 to a cross member 4 of a vehicle body, as shown schematically in FIG.
  • a tensioning device 5 acts on the side cheeks 22 and can be brought into a fixing position or a release position by actuating a tensioning lever 51.
  • the fixing position the actuating unit 3 is clamped between the side cheeks 22, so that the steering wheel position of a steering wheel attached to the steering spindle 32 is fixed relative to the support unit 2 in the vehicle interior.
  • the release position the control unit 3 for setting the steering wheel position relative to the driver position can be adjusted up and down at least in a height direction H, as indicated by the double arrow.
  • jacket unit 31 telescopically in order to enable a longitudinal adjustment of the steering spindle 32 in the longitudinal direction, i.e. in the direction of the longitudinal axis L, as indicated by the double arrow.
  • the longitudinal adjustment can preferably also be fixed or released by means of the clamping device 5.
  • FIG. 2 shows a view from above. It can be seen that each holding section 21 has an elongated hole 23 with edge sections 24 extending in the longitudinal direction. In each elongated hole 23 a sliding sleeve 6 is arranged, which has a perpendicular to the extension of the Hal teabitess 21 in the direction of an axis B through opening 61.
  • FIG. 3 shows a cross-section A-A in a view in the direction of the longitudinal axis L from behind, that is to the fastening section 33. This shows the arrangement of the sliding sleeves 6 in the elongated holes 23 which are laterally bounded by the edge sections 24.
  • the sliding sleeve 6 has a tubular, preferably cylindrical sleeve section 62, which at both ends has collar sections 63, 64 that protrude radially outward in the manner of a flange.
  • the first collar section 63 has a first end face 65
  • the other collar section 64 has a second end face 66.
  • the two end faces 65 and 66 have an un- In the deformed state, as shown in FIGS. 4 and 5, an axial distance C.
  • the collar sections 63, 64 have sliding surfaces 67 which are axially directed towards one another and between which an edge section 24 of an elongated hole 23 is arranged.
  • a support sleeve 7 has a tubular, cylindrical support section 71 which is inserted into the through opening 61 of the sliding sleeve 6. At one end, the support section 71 has a first (axial) support surface 72. At the end facing away from this, a support plate 73 adjoins the support section 71, which has a second (axial) support surface 74 axially resting against the second end surface 66 Has.
  • the first support surface 72 and the second support surface 74 have the same normal direction, and have an axial support distance S from each other.
  • the support distance S this is the axial length of the support section 71, which is immersed in the through opening 61, is smaller by the difference d than the Axialab stand C, the following applies: S - C ⁇ 0.
  • the first support surface 72 is spaced from the first end face 65 in the direction of the axis B, that is, the first support surface 72 is at a distance from the first end face 65 in the direction of the axis B, the distance corresponding to the difference d.
  • the support sleeve 7 with the support section 71 is inserted axially into the through opening 61 until the support plate 73 rests axially against the collar section 64, i.e. the sliding sleeve 6 is axially supported against the second support surface 74.
  • a fastening means in the form of a Ge threaded bolt 8 is pushed through the through opening 61, wherein it has an axial clamping surface 82 on a head 81, which when inserted against the first support surface 72 on the free, the support plate 73 facing away End of the support sleeve 7 is directed.
  • the threaded bolt is screwed into a threaded bore 41 in the cross member 4.
  • the head 81 of the threaded bolt 8 strikes axially against the first support surface 72 at the free end of the support section 71 when it is screwed in, the support sleeve 7 is fixed on the cross member 4, and the support plate 73 is braced against the cross member 4 with an outer bearing surface 75.

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

Abstract

La présente invention concerne une colonne de direction (1) pour un véhicule automobile, comprenant un actionneur (3) présentant un arbre de direction monté rotatif (32), qui est maintenu par une unité de support (2), qui comprend au moins un manchon coulissant (6), qui présente une première face d'extrémité (65) et une seconde face d'extrémité (66) et un passage (61) qui s'étend entre celles-ci dans la direction d'un axe (B) et à travers lequel un élément de fixation (8) destiné à être raccordé à une carrosserie d'un véhicule automobile peut être passé, une face de serrage axiale (82) de l'élément de fixation (8) étant dirigée dans la direction de l'essieu (B) contre la première face d'extrémité (65), et l'unité de support (2) étant maintenue sur des surfaces coulissantes (67) formées entre les faces d'extrémité (65, 66), ladite unité de support étant mobile transversalement à l'axe (B) par rapport auxdites surfaces coulissantes en cas de collision. L'invention propose, pour permettre un réglage plus simple et plus fiable du comportement d'absorption d'énergie, qu'un manchon de support (7) soit agencé de façon coaxiale dans le passage du manchon coulissant (6), ledit manchon de support comprenant une première face de support axiale (72) et une seconde face de support axiale (74) agencée par rapport à celle-ci à une distance de support axiale (S), le manchon coulissant (6) étant agencé entre la seconde face de support (74) et la face de serrage (82), et la première face de support (72) pouvant être serrée contre la face de serrage (82) de l'élément de fixation (8).
PCT/EP2021/055705 2020-03-11 2021-03-08 Colonne de direction pour un véhicule automobile WO2021180610A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020203104.5 2020-03-11
DE102020203104.5A DE102020203104B4 (de) 2020-03-11 2020-03-11 Lenksäule für ein Kraftfahrzeug

Publications (1)

Publication Number Publication Date
WO2021180610A1 true WO2021180610A1 (fr) 2021-09-16

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PCT/EP2021/055705 WO2021180610A1 (fr) 2020-03-11 2021-03-08 Colonne de direction pour un véhicule automobile

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DE (1) DE102020203104B4 (fr)
WO (1) WO2021180610A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775172A (en) * 1995-07-26 1998-07-07 Lemforder Nacam S.A. Guiding and energy absorption device for a motor vehicle steering column
US20030155760A1 (en) * 2002-02-15 2003-08-21 Andre Laisement Device for adjusting an energy absorbing system of an automobile vehicle steering column
US20060043722A1 (en) * 2004-08-25 2006-03-02 Toyota Jidosha Kabushiki Kaisha Structure for fixing steering column with fastener and disk spring
EP1775195A2 (fr) * 2005-10-17 2007-04-18 Delphi Technologies, Inc. Fixation d'une colonne de direction
DE102014104350B3 (de) 2014-03-28 2015-05-13 Thyssenkrupp Presta Ag Lenksäule für ein Kraftfahrzeug

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1300284A (en) 1970-11-25 1972-12-20 Accles & Pollock Ltd Vehicle steering columns
CN107148379B (zh) 2014-11-04 2018-12-11 日本精工株式会社 转向柱装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775172A (en) * 1995-07-26 1998-07-07 Lemforder Nacam S.A. Guiding and energy absorption device for a motor vehicle steering column
US20030155760A1 (en) * 2002-02-15 2003-08-21 Andre Laisement Device for adjusting an energy absorbing system of an automobile vehicle steering column
US20060043722A1 (en) * 2004-08-25 2006-03-02 Toyota Jidosha Kabushiki Kaisha Structure for fixing steering column with fastener and disk spring
EP1775195A2 (fr) * 2005-10-17 2007-04-18 Delphi Technologies, Inc. Fixation d'une colonne de direction
DE102014104350B3 (de) 2014-03-28 2015-05-13 Thyssenkrupp Presta Ag Lenksäule für ein Kraftfahrzeug

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DE102020203104B4 (de) 2021-11-18
DE102020203104A1 (de) 2021-09-16

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