WO2002049904A1 - Direction a cremaillere comportant des guides lineaires montes sur palier a roulement - Google Patents

Direction a cremaillere comportant des guides lineaires montes sur palier a roulement Download PDF

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Publication number
WO2002049904A1
WO2002049904A1 PCT/EP2001/013907 EP0113907W WO0249904A1 WO 2002049904 A1 WO2002049904 A1 WO 2002049904A1 EP 0113907 W EP0113907 W EP 0113907W WO 0249904 A1 WO0249904 A1 WO 0249904A1
Authority
WO
WIPO (PCT)
Prior art keywords
rack
balls
steering gear
row
pinion
Prior art date
Application number
PCT/EP2001/013907
Other languages
German (de)
English (en)
Inventor
Uwe Abraham
Original Assignee
Ina Schaeffler Kg
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 Ina Schaeffler Kg filed Critical Ina Schaeffler Kg
Priority to AU2002223687A priority Critical patent/AU2002223687A1/en
Publication of WO2002049904A1 publication Critical patent/WO2002049904A1/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
    • 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
    • F16H55/285—Special devices for taking up backlash using pressure yokes with rollers or balls to reduce friction

Definitions

  • the invention relates to a rack and pinion steering gear for motor vehicles.
  • the rack and pinion steering gear has a pinion which is connected to a steering tube.
  • the pinion engages with a toothing in the toothing of a toothed rack, so that when the pinion rotates, the toothed rack is moved in translation.
  • the rack acts on the toe levers of the wheels to be steered.
  • Such a rack and pinion steering gear is shown in DE 28 07 005 AI, in which the toothing of the rack is printed into the toothing of the pinion in the region of the pinion by means of a pressure piece.
  • the pressure piece comprises roller-mounted rollers, which are arranged opposite the pinion and are pressed against the rack by means of spring elements.
  • roller bearings To be able to withstand high forces in the event of impact loads, sufficiently strong roller bearings must be provided. Together with the rollers and spring elements, these take up a large amount of space. In addition, a large number of components must be assembled and adjusted. As shown in DE 34 08 673 C2, a slide bearing can also be provided on the pressure piece.
  • plain bearings are subject to high wear, which creates a game in the course of wear, which must be readjusted.
  • plain bearings generally have higher coefficients of friction, so that higher steering forces have to be applied.
  • the object of the present invention is to provide a support for the toothed rack in the region of the pinion which takes up little space.
  • a rack and pinion steering gear with a steering gear housing, with a rack which is arranged in the steering gear housing to be displaceable along a longitudinal axis and which has a first toothing, with a pinion which is rotatably arranged in the steering gear housing and which has a second toothing, which is in engagement with the first toothing of the rack, a linear roller bearing unit, which is arranged between a wall of the steering gear housing and a supporting surface of the rack opposite the pinion and the rack is supported in relation to the steering gear housing.
  • Linear roller bearing units are constructed in such a way that rolling elements are arranged between two running surfaces of two linearly moving components. Since all rolling elements absorb forces that are transferred from one component to the other at the same time, linear roller bearing units have a high load-bearing capacity. In addition, linear roller bearing units take up little space. Linear roller bearing units have practically no wear, so that it is not necessary to readjust the linear roller bearing unit due to wear. There is therefore no need to provide components with which a game which arises due to wear can be eliminated manually or automatically.
  • the pinion, the rack and the linear roller bearing unit can be set so that only the one to be set Operating play of the linear roller bearing unit is present and thus no additional spring element is required to press out a game.
  • the linear roller bearing unit can be formed by a linear ball bearing.
  • This has an outer shell, balls arranged in at least one row of balls and a cage guiding the balls.
  • the balls of each row of balls roll in a support section of the row of balls on the one hand on a track on the outer shell and on the other hand on a track on the support surface of the rack.
  • Each row of balls also has a non-load-bearing return section in which the balls are returned, the support section being connected to the return section via deflection sections to form a rotating row of balls.
  • the return section is preferably formed by return channels in the cage.
  • the linear ball bearing has the advantage that both the support section and the return section of each row of balls are arranged side by side between the rack and the wall of the steering gear housing, so that the space between the support surface of the rack and the wall of the steering gear housing is small.
  • the lubricant in the gap can be used as overload protection.
  • the lubricant in the gap cannot escape, so that the radial forces and through the lubricant film are transferred to the cage and from the cage to the outer shell. Due to this favorable force distribution, the rolling elements are protected against sudden overloads.
  • the outer sleeve can be attached to the steering gear housing and manufactured without cutting.
  • the linear ball bearing it is possible for the linear ball bearing to have at least one support plate, balls which form a row of balls for each support plate, and a cage guiding the balls.
  • the balls of each row of balls roll in a supporting section of the row of balls on the one hand on a raceway, which is formed by a support plate, and on the other hand on a raceway on the support surface of the rack.
  • the balls of each support row are returned in a non-load-bearing return section, the support section and the return section being connected via deflection sections to form a rotating row of balls.
  • the linear ball bearing can be half-shell-shaped in cross-section, with the supporting surface of the rack being correspondingly shaped in cross-section.
  • the linear ball bearing preferably has two or more separate load-bearing rows of balls.
  • the linear roller bearing unit can also be formed by at least one roller circulating shoe.
  • Circulating roller shoes have rollers as rolling elements which, in a supporting section, roll on a running surface of the supporting surface of the rack and on a running surface, which can be formed by a housing of the rotating roller shoe.
  • the return section of a roller roller shoe lies on a plane which is arranged perpendicular to the tread.
  • the distance between the support surface of the rack and the wall of the steering gear housing must therefore be larger than with linear ball bearings.
  • no other components such.
  • spring elements provided rotating roller shoes take up less space than conventional thrust pieces.
  • clearance adjustment means can be provided with which the clearance between the linear roller bearing unit and the rack can be adjusted.
  • the play setting means can be formed by an adjusting screw which is received in a threaded bore in a wall of the steering gear housing.
  • linear roller bearing unit is a structural unit that can be assembled as an integrated component.
  • FIG. 1 shows a rack and pinion steering gear according to the invention in a sectional view transverse to a longitudinal axis of the rack
  • FIG. 2 shows an enlarged partial view of the rack-and-pinion steering gear along the section line III-III according to FIG. 1 in the region of the linear roller bearing unit,
  • FIG. 3 shows a sectional view of the tooth articulated gear according to FIG. 2,
  • FIG. 4 shows a partial view of a rack-and-pinion steering gear in the area of the linear roller bearing unit, this having support plates,
  • FIG. 5 shows a sectional illustration of the rack and pinion steering gear along the section line VV according to FIG. 4 with a play setting
  • Figure 6 is a partial view of a rack and pinion steering gear in the area of the linear roller bearing unit, which is formed by two roller shoes.
  • the rack and pinion steering gear comprises a steering gear housing 1, a rack 2, a pinion 3 and a linear roller bearing unit 4.
  • the rack is arranged to be movable (adjustable) along a longitudinal axis 5 and has a first toothing 6.
  • the pinion 3 is rotatably mounted in the steering gear housing 1 via a roller bearing 8.
  • the outer ring 9 of the roller bearing 8 is secured via a cover 10 in a bore 11 of the steering gear housing 1.
  • the inner ring 12 of the rolling bearing 8 is clamped on the neck of the pinion 3 by means of a nut 13.
  • the pinion 3 has a second toothing 7, which is in engagement with the first toothing 6 of the rack 2.
  • the linear roller bearing unit 4 is arranged between a support surface 14 of the rack 2 and a wall 15 of the steering gear housing 1.
  • the outer contour of the wing 14 has a circular shape in cross section.
  • the linear roller bearing unit 4 is half-shell-shaped in accordance with the support surface 14.
  • the linear roller bearing unit 4 is represented by a linear ball bearing which has an outer shell 16, balls 17, 17 'and a cage 18 which guides the balls.
  • the outer shell 16 is fixed to the wall 15 of the steering gear housing 1. It also forms two running surfaces 19, 19 'for the balls 17, 17' arranged in two load-bearing rows of balls.
  • the balls 17, 17 ' also roll on the running surfaces 20, 20' in the form of grooves which are provided in the support surface 14 of the rack 2.
  • the balls 17, 17 ' are guided in the area of the running surfaces 19, 19' in recesses 21, 21 'of the cage 18.
  • the cage 18 also has return channels 22, 22 'in which the balls 17, 17' are returned without load. Since virtually no wear occurs due to the linear roller bearing unit 4, readjustment of the linear roller bearing unit is not necessary in the arrangement described. There is therefore no need for an arrangement which ensures that any play which arises due to wear and tear is eliminated manually or automatically. A game can occur due to inaccuracies in the toothings 6 and 7, which can vary in size depending on the position of the rack 2 along the longitudinal axis 5. However, the size of this play moves within the operating play of the linear roller bearing unit 4 to be set. Thus, no additional spring elements are required to compensate for this play.
  • the treads 20, 20 'in the wing 14 of the rack 2 can be represented by grooves.
  • the linear roller bearing unit 4 can absorb torques that act on the rack 2. This is particularly important if a steering aid is provided, which has a drivable ball nut that acts on a spindle section of the rack 2. Due to frictional forces, torques are transmitted from the ball nut to the rack 2.
  • the so-called squeeze effect of the lubricant in the gap can be used as overload protection.
  • the lubricant cannot escape in the gap, so that the radial forces are transmitted directly to the outer sleeve 16 via the balls 17, 17 'and others over the lubricant film in the gap and over the cage 18. Because of this force distribution over the entire cage, the rolling elements 17, 17 'and the running surfaces 19, 19', 20, 20 'are protected in the event of an suddenly occurring overload.
  • Figures 4 and 5 show an alternative design of a rack and pinion steering gear with a linear roller bearing unit 4 in the form of a linear ball bearing.
  • Components which correspond to components according to FIGS. 1 to 3 are provided with reference numerals which are increased by the numerical value 100 and are described in FIGS. 1 to 3.
  • the linear roller bearing unit 4 has no outer shell.
  • play setting means are provided in the form of a screw 124, which is seated in a threaded bore 125 of the wall 115.
  • FIG. 6 shows a rack and pinion steering gear in which the linear roller bearing unit 204 is represented by two ' roller rotating shoes 226, 226'.
  • Components that correspond to components in FIGS. 1 to 3 are provided with reference numerals that are increased by the numerical value 200 and described in FIGS. 1 to 3.
  • the roller circulation shoes 226, 226 'each have a housing 216, 216' in which running surfaces 219, 219 'and return channels 222, 222' are formed.
  • the rolling elements are represented by rollers 217, 217 '. These run on the one hand on the running surfaces 219, 219 'and on running surfaces 220, 220' on the supporting surface 214 of the rack 202.
  • the treads 220, 220 ' are flat.
  • the rollers are guided through cages 218, 218 '. LIST OF REFERENCE NUMBERS

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 une direction à crémaillère comportant un boîtier de direction (1) composé d'une crémaillère (2) logée de manière à coulisser le long d'un axe longitudinal (5) dans le boîtier de direction (1) et présentant une première denture (6), d'un pignon (3) logé de manière rotative dans le boîtier de direction (1) et présentant une deuxième denture s'engrenant avec la première denture (6) de la crémaillère (2), et d'une unité de palier à roulement linéaire (4) logée entre une paroi du boîtier de direction (1) et une surface porteuse de la crémaillère (2) en face du pignon (3) de manière à loger la crémaillère (2) par rapport au boîtier de direction (1).
PCT/EP2001/013907 2000-12-21 2001-11-28 Direction a cremaillere comportant des guides lineaires montes sur palier a roulement WO2002049904A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002223687A AU2002223687A1 (en) 2000-12-21 2001-11-28 Rack-and-pinion steering assembly with a rollingly mounted linear guide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10063877.5 2000-12-21
DE2000163877 DE10063877A1 (de) 2000-12-21 2000-12-21 Zahnstangenlenkung mit wälzgelagerten Linearführungen

Publications (1)

Publication Number Publication Date
WO2002049904A1 true WO2002049904A1 (fr) 2002-06-27

Family

ID=7668203

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/013907 WO2002049904A1 (fr) 2000-12-21 2001-11-28 Direction a cremaillere comportant des guides lineaires montes sur palier a roulement

Country Status (3)

Country Link
AU (1) AU2002223687A1 (fr)
DE (1) DE10063877A1 (fr)
WO (1) WO2002049904A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005090143A1 (fr) * 2004-02-18 2005-09-29 Schaeffler Kg Plaque d'appui a douilles a billes pour direction a cremaillere
WO2016080480A1 (fr) * 2014-11-21 2016-05-26 Thk株式会社 Dispositif de conversion de mouvement de rotation-linéaire et dispositif de direction
US20190185051A1 (en) * 2017-12-15 2019-06-20 Steering Solutions Ip Holding Corporation Steering system having an adjustment assembly
US20220315204A1 (en) * 2019-12-20 2022-10-06 Airbus Operations Limited Spoiler actuation apparatus for moving an aircraft spoiler

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344726B4 (de) * 2003-09-26 2016-03-10 Audi Ag Zahnstangenlenkung für ein Kraftfahrzeug
DE102006011752B3 (de) * 2006-03-13 2007-11-08 Klk Motorsport Gmbh Zahnstangenlenkung
DE102006052376A1 (de) * 2006-11-07 2008-05-08 Volkswagen Ag Verfahren zur Bestimmung eines Druckstückspiels
DE102021201267A1 (de) 2021-02-10 2022-08-11 Volkswagen Aktiengesellschaft Lenksystem für ein Kraftfahrzeug und Verfahren zum Montieren eines Lenksystems für ein Kraftfahrzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935150A (en) * 1955-08-05 1960-05-03 Monroe Auto Equipment Co Hydraulic power steering device
DE2236641A1 (de) * 1971-08-10 1973-02-22 Teleflex Ltd Mechanische getriebevorrichtung
US4271716A (en) * 1978-05-30 1981-06-09 Regie Nationale Des Usines Renault Loading mechanism for rack and pinion steering
GB2071261A (en) * 1980-03-03 1981-09-16 Riv Officine Di Villar Perosa Steering box for the steering mechanism of a motor vehicle
DE3244531A1 (de) * 1982-12-02 1984-06-07 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Zahnstangenlenkung
US4531603A (en) * 1984-01-09 1985-07-30 General Motors Corporation Rack and pinion steering gear with adjustable low friction anti-roll rack bearing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209893B (de) * 1963-06-27 1966-01-27 Porsche Kg Lenkvorrichtung fuer Fahrzeuge, insbesondere Kraftfahrzeuge
DE8105867U1 (de) * 1980-03-03 1981-08-27 RIV-SKF Officine di Villar Perosa S.p.A., 10123 Torino Lenkungsgehaeuse zur steuerung des lenkmechanismus eines kraftfahrzeuges
DE3529447A1 (de) * 1985-08-16 1987-03-05 Audi Ag Zahnstangen-lenkgetriebe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935150A (en) * 1955-08-05 1960-05-03 Monroe Auto Equipment Co Hydraulic power steering device
DE2236641A1 (de) * 1971-08-10 1973-02-22 Teleflex Ltd Mechanische getriebevorrichtung
US4271716A (en) * 1978-05-30 1981-06-09 Regie Nationale Des Usines Renault Loading mechanism for rack and pinion steering
GB2071261A (en) * 1980-03-03 1981-09-16 Riv Officine Di Villar Perosa Steering box for the steering mechanism of a motor vehicle
DE3244531A1 (de) * 1982-12-02 1984-06-07 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Zahnstangenlenkung
US4531603A (en) * 1984-01-09 1985-07-30 General Motors Corporation Rack and pinion steering gear with adjustable low friction anti-roll rack bearing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005090143A1 (fr) * 2004-02-18 2005-09-29 Schaeffler Kg Plaque d'appui a douilles a billes pour direction a cremaillere
WO2016080480A1 (fr) * 2014-11-21 2016-05-26 Thk株式会社 Dispositif de conversion de mouvement de rotation-linéaire et dispositif de direction
JP2016098918A (ja) * 2014-11-21 2016-05-30 Thk株式会社 回転直動変換装置、ステアリング装置
US10053136B2 (en) 2014-11-21 2018-08-21 Thk Co., Ltd. Rotation-linear motion conversion apparatus and steering apparatus
DE112015005261B4 (de) * 2014-11-21 2021-07-01 Thk Co., Ltd. Dreh-/Linearbewegungs-Umsetzungsvorrichtung und Lenkvorrichtung
US20190185051A1 (en) * 2017-12-15 2019-06-20 Steering Solutions Ip Holding Corporation Steering system having an adjustment assembly
US10982747B2 (en) * 2017-12-15 2021-04-20 Steering Solutions Ip Holding Corporation Steering system having an adjustment assembly
US20220315204A1 (en) * 2019-12-20 2022-10-06 Airbus Operations Limited Spoiler actuation apparatus for moving an aircraft spoiler

Also Published As

Publication number Publication date
AU2002223687A1 (en) 2002-07-01
DE10063877A1 (de) 2002-08-29

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