WO2011110512A1 - Élément de rattrapage de jeu présentant une clavette - Google Patents

Élément de rattrapage de jeu présentant une clavette Download PDF

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Publication number
WO2011110512A1
WO2011110512A1 PCT/EP2011/053354 EP2011053354W WO2011110512A1 WO 2011110512 A1 WO2011110512 A1 WO 2011110512A1 EP 2011053354 W EP2011053354 W EP 2011053354W WO 2011110512 A1 WO2011110512 A1 WO 2011110512A1
Authority
WO
WIPO (PCT)
Prior art keywords
wedge
adjusting element
component
element according
rack
Prior art date
Application number
PCT/EP2011/053354
Other languages
German (de)
English (en)
Inventor
Stephanus Bester
Konstantin Auns
Karl-Heinz Urban
Eberhard Kübler
Original Assignee
Zf Lenksysteme 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 Zf Lenksysteme Gmbh filed Critical Zf Lenksysteme Gmbh
Publication of WO2011110512A1 publication Critical patent/WO2011110512A1/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
    • B62D3/123—Steering gears mechanical of rack-and-pinion type characterised by pressure yokes
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/26—Racks
    • F16H55/28—Special devices for taking up backlash
    • F16H55/283—Special devices for taking up backlash using pressure yokes

Definitions

  • the invention relates to an adjusting element with a wedge for generating a wedge effect in the manner of a wedge gear between a first component and a second component of a steering system.
  • the compression spring can be here by means of a screw in one
  • the foundedlegbare of the pressure piece in a corresponding guide in the steering gear housing is the way
  • the steering gear can jam during its actuation.
  • the pending support rests with a cylindrical or spherical
  • a compression spring which acts on the slide, is supported in the housing on a set screw in order to limit a retreat of the slide and thus to ensure engagement between the rack and steering pinion, the path of the slider is adjustable by a limiting ring,
  • DE 10 2006 016 1 10 A1 shows and describes a rack and pinion steering gear with automatic adjustment of the pressure piece, wherein a wedge-like part is provided, which is on the one hand to the pressure piece and the other to a
  • the wedge-like part is formed from two half rings, which have a wedge-like cross-section.
  • the half rings are acted upon by means of an annular spring so that they, embracing the half-rings, endeavor, with their smaller wedge-end face, so with the wedge tip, run-on slopes on the pressure piece and a gear housing part to move apart, so that the pressure piece in the direction of the is pressed without play to be set teeth, or oversized pressure piece play is avoided.
  • the pertinent adjusting element builds comparatively complex in the sum of the parts, since a wedge-shaped cross-sectional shape is to be manufactured around the entire circumference of the wedge-like part.
  • the invention has for its object to provide a readjustment with a wedge, which allows a precise, easy readjustment of the game between two components in engagement or contact and ensures this permanently.
  • the adjuster has a portion that is wedge-like or that
  • Adjusting element is formed overall in the form of a conically tapered member or wedge. It exerts a wedge effect on a first component and a second component of a steering system, wherein the adjuster or the wedge is supported with a first surface on the first component and with a second surface on the second component and each applies normal forces.
  • the wedge which is usually acted upon by an energy storage in the sense of generating normal forces on the two components, is supported by a component with a frictional force or static friction generated such that the wedge under the influence of operational vibrations for example, can not retreat into a position in which the game is undesirably increased.
  • the static friction on its other surface is chosen so that at an increasing clearance between the components of the wedge overcoming the static friction on its other surface and under the action preferably of an energy storage device acting in the wedge or wedge tip direction changes its position.
  • the wedge or the adjusting element with a wedge-like section is therefore in the nature and effect of Sperrklinkengetriebes- however continuously - formed and secures on the one hand a toothing or adhesion possibility with a component on a wedge surface and a Gleit Wegschw on its other surface, in abutment with the other component is.
  • the other component can be in operation also slide back and forth on the surface in question and be formed by a rack or the like.
  • At least one surface of the wedge is formed so that the wedge can not be rotated about its longitudinal axis, in particular, the surface is just formed.
  • the wedge on a first surface which is parallel to its longitudinal axis.
  • the second surface of the wedge extends as a flat surface with a sharp wedge angle to the longitudinal axis and to the first
  • the wedge is formed with a square base. It may also be expedient, for example in adaptation to a circular cross-section housing for the adjusting element to choose the planform of the adjusting ring and to form the cross-section of the adjusting element around the circumference wedge-shaped.
  • a component which is supported on a first surface of the adjusting element is fixed in position and a component is movable, for example formed as a toothed rack, it is expedient to choose the coefficient of friction between the first surface and the first component to be greater than on the second component.
  • the wedge or adjuster along with wedge may be appropriate from a
  • Metal material be formed from steel or a non-ferrous metal. It may be useful in particular to minimize operating noise, the
  • Adjustment element or the wedge of a technical plastic such as a polymer to form. It is also possible to use a wedge of a metal material which has a plastic coating on one surface or on both surfaces. A surface of the wedge and a component can also be inserted Arrange spring element, for example, allows a higher coefficient of friction and allows additional bias in the sense of increasing the normal forces on the components.
  • the wedge is in a particularly preferred
  • Embodiment by means of an energy accumulator in the form of a compression spring biased approximately in the direction of its longitudinal axis in the direction of the wedge tip or in the direction of its smaller end face, so that with an increase in the game between the pressed components of the steering system, the wedge overcoming the static friction its surface with a larger coefficient of friction can slide on its surface with a smaller coefficient of friction.
  • the adjusting element according to the invention is particularly suitable in a pressure piece or as Duck Scientificersatz for play clearance of a toothing of a rack with a toothing of a pinion in a rack and pinion steering gear
  • FIG. 1 is a partial schematic cross section through an adjusting element in a rack-and-pinion steering gear of a passenger car
  • Fig. 2 is a partial schematic cross section through another
  • Embodiment of an adjusting in a rack and pinion steering gear of a passenger car Embodiment of an adjusting in a rack and pinion steering gear of a passenger car.
  • Fig. 1 is a rack and pinion steering gear 14 of a steering system, which is formed as a rack power steering system shown in a partial cross-section.
  • the rack and pinion steering gear 14 is shown as a hollow cylindrical component in which a cylindrical rack 16 made of solid material is axially displaceable.
  • rack 16 carries a toothing rod extending over the toothing 15, which is in engagement with a toothing 17 of a pinion 18.
  • the pinion 18 is rotatably connected to one end of a steering shaft with this.
  • the teeth 15,17 may be straight-toothed or helical involute or be formed in other ways, so that upon rotation of the steering shaft, an axial displacement of the
  • Rack 16 results. Similarly, a pinion of a servomotor may be in engagement with the toothing 15 of the toothed rack 16 to apply a steering assist force to the rack 16.
  • the pinion 18 is rotatably mounted in a manner not shown in the transmission housing.
  • the rack 16 is pivotally connected at its ends, not shown, each having a tie rod and a Radklenkhebel with steerable wheels of the passenger car.
  • the toothing 15 of the rack 16 is by means of a piston-like
  • Pressure element 13 which is arranged along an axis perpendicular to the longitudinal axis 19 of the rack 16 axis 20 axially displaceable in the gear housing, pressed against the pinion 18.
  • the pressure piece 13 may be cylindrical or in another cross-sectional shape, deviating from the circular shape, and is inserted in a bore 21 with adapted to the respective cross-sectional shape of the pressure piece 13 cross-sectional shape.
  • the bore 21 has in its axial, the rack 16 end facing a Opening 22 through which a pin-like pressure piece end 23 protrudes.
  • An adjusting element 1 formed as a wedge 2 is acted upon by a force F of an energy store 1 1, which is directed transversely to the axis 20 along a longitudinal axis 7 of the wedge 2, in the viewing direction to the figure 1 from left to right.
  • the wedge 2 is a by milling or other cutting
  • the wedge 2 has facing the pressure piece 13 a perpendicular to the axis 20 and arranged parallel to the longitudinal axis 7, formed as a flat surface 8 second surface 6. With a wedge angle p, a first surface 5 of the wedge 2, likewise formed as a flat surface 9, runs toward an end face 12.
  • the end face 12 of the wedge 2 is formed with a smaller height h- ⁇ than the end face 24 formed in contact with the force accumulator 1 1, which has a height h 2 in the direction of the axis 20.
  • the surfaces 5,6 extend transversely to the longitudinal axis 7, viewed parallel to each other.
  • the coefficient of friction ⁇ - ⁇ between the second surface 6 and the pressure piece 13 on which the wedge 2 can slide is less than the coefficient of friction ⁇ 2 between the first surface 5 and a cover 25 which closes the bore 21 and on which the wedge 2 supported.
  • the cover 25 has an obliquely with the wedge angle p extending surface on which the first surface 5 of the wedge 2 applies.
  • the cover 25 and the pressure piece 13 form first and second components 3,4 on the wedge 2 normal forces N, Ni applies, resulting in a normal force N in the sense of pressing the
  • the wedge 2 can also be applied with its second surface 6 directly to the rack 16 and slide the rack 16 on this surface 6, as illustrated in FIG. 2, in which the wedge 2 only in a housing recess 26 of a housing 27 of the rack and pinion steering gear 14 is arranged.
  • the space requirement is reduced in the embodiment shown in Fig. 2, since the housing recess 28 in a housing wall with the same outer contour can be introduced.
  • the same reference numerals apply to the same components as in FIG. 1. Due to the increased coefficient of friction ⁇ 2 , a retraction of the wedge 2 against the spring force F of the force accumulator 1 1 is prevented.
  • a spring element 10 may be provided in the manner of a flat plate spring, which can define the coefficient of friction ⁇ 2 and can apply a defined bias to the pressure piece 13.

Landscapes

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

Abstract

L'invention concerne un élément de rattrapage de jeu (1) présentant une clavette (2) pour la production d'un effet de coin dans le type d'une transmission à clavette entre un premier composant (3) et un second composant (4) d'un système de direction, la clavette (2) prenant appui, par une première surface (5), sur le premier composant (3) et, par une seconde surface (6), sur le second composant (4), cependant que s'appliquent des forces normales, respectivement (N, N1). L'invention a pour but d'obtenir un élément de rattrapage de jeu présentant une clavette qui permette un rattrapage simple et précis du jeu entre deux composants en prise ou en contact entre eux, et garantisse ce rattrapage pendant une longue durée. A cet effet, l'invention est caractérisée en ce que le coefficient de friction (µ1) entre la première surface (5) et le premier composant (3), et le coefficient de friction (µ) entre la seconde surface (6) et le second composant (4) sont différents l'un de l'autre.
PCT/EP2011/053354 2010-03-09 2011-03-07 Élément de rattrapage de jeu présentant une clavette WO2011110512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002685.9 2010-03-09
DE201010002685 DE102010002685A1 (de) 2010-03-09 2010-03-09 Nachstellelement mit einem Keil

Publications (1)

Publication Number Publication Date
WO2011110512A1 true WO2011110512A1 (fr) 2011-09-15

Family

ID=44168500

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/053354 WO2011110512A1 (fr) 2010-03-09 2011-03-07 Élément de rattrapage de jeu présentant une clavette

Country Status (2)

Country Link
DE (1) DE102010002685A1 (fr)
WO (1) WO2011110512A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014227052A (ja) * 2013-05-23 2014-12-08 日立オートモティブシステムズステアリング株式会社 ステアリング装置
CN113895890A (zh) * 2021-10-29 2022-01-07 宝武集团鄂城钢铁有限公司 一种拨车机齿轮间隙调整方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012022801B4 (de) 2012-11-21 2023-03-09 Volkswagen Aktiengesellschaft Verfahren zur Lenkungsüberwachung und Lenksystem
DE102017203480A1 (de) * 2017-03-03 2018-09-06 Robert Bosch Gmbh Lenksystem

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1181738A (en) * 1967-09-07 1970-02-18 Cam Gears Ltd Improvements in or relating to Rack and Pinion Assemblies
DE1948612A1 (de) 1968-12-05 1970-11-19 Barkas Werke Veb Elastisches Widerlager fuer die Zahnstange eines Kraftfahrzeug-Lenkgetriebes
US3585875A (en) * 1969-12-04 1971-06-22 Cam Gears Ltd Rack and pinion assembly
EP0238214A2 (fr) * 1986-03-19 1987-09-23 Trw Cam Gears Limited Ensemble de crémaillère et pignon
DE3835947A1 (de) * 1988-10-21 1990-04-26 Audi Ag Zahnstangengetriebe, insbesondere zahnstangen-lenkgetriebe
US5265691A (en) * 1991-08-26 1993-11-30 Jidosha Kiki Co., Ltd. Rack-and-pinion steering apparatus
EP1046569A1 (fr) * 1999-04-23 2000-10-25 TRW Inc. Appareil pour tourner les roues directrices de véhicules
DE102006016110A1 (de) 2006-04-04 2007-10-18 Thyssenkrupp Presta Steertec Gmbh Zahnstangenlenkgetriebe mit automatischer Nachstellung des Druckstücks
US20080202271A1 (en) * 2007-02-27 2008-08-28 Mando Corporation Apparatus for automatically adjusting yoke clearance in a steering device
US7487984B1 (en) * 2007-10-01 2009-02-10 Gm Global Technology Operations, Inc. Steering rack wear compensator
EP2098435A2 (fr) * 2008-03-07 2009-09-09 Delphi Technologies, Inc. Mécanisme de direction à crémaillère avec palier de crémaillère auto-réglable

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1181738A (en) * 1967-09-07 1970-02-18 Cam Gears Ltd Improvements in or relating to Rack and Pinion Assemblies
DE1948612A1 (de) 1968-12-05 1970-11-19 Barkas Werke Veb Elastisches Widerlager fuer die Zahnstange eines Kraftfahrzeug-Lenkgetriebes
US3585875A (en) * 1969-12-04 1971-06-22 Cam Gears Ltd Rack and pinion assembly
EP0238214A2 (fr) * 1986-03-19 1987-09-23 Trw Cam Gears Limited Ensemble de crémaillère et pignon
DE3835947A1 (de) * 1988-10-21 1990-04-26 Audi Ag Zahnstangengetriebe, insbesondere zahnstangen-lenkgetriebe
US5265691A (en) * 1991-08-26 1993-11-30 Jidosha Kiki Co., Ltd. Rack-and-pinion steering apparatus
EP1046569A1 (fr) * 1999-04-23 2000-10-25 TRW Inc. Appareil pour tourner les roues directrices de véhicules
DE102006016110A1 (de) 2006-04-04 2007-10-18 Thyssenkrupp Presta Steertec Gmbh Zahnstangenlenkgetriebe mit automatischer Nachstellung des Druckstücks
US20080202271A1 (en) * 2007-02-27 2008-08-28 Mando Corporation Apparatus for automatically adjusting yoke clearance in a steering device
US7487984B1 (en) * 2007-10-01 2009-02-10 Gm Global Technology Operations, Inc. Steering rack wear compensator
EP2098435A2 (fr) * 2008-03-07 2009-09-09 Delphi Technologies, Inc. Mécanisme de direction à crémaillère avec palier de crémaillère auto-réglable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014227052A (ja) * 2013-05-23 2014-12-08 日立オートモティブシステムズステアリング株式会社 ステアリング装置
CN113895890A (zh) * 2021-10-29 2022-01-07 宝武集团鄂城钢铁有限公司 一种拨车机齿轮间隙调整方法

Also Published As

Publication number Publication date
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