WO2016173840A1 - Boîtier de direction muni d'un pignon monté élastiquement - Google Patents

Boîtier de direction muni d'un pignon monté élastiquement Download PDF

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Publication number
WO2016173840A1
WO2016173840A1 PCT/EP2016/058104 EP2016058104W WO2016173840A1 WO 2016173840 A1 WO2016173840 A1 WO 2016173840A1 EP 2016058104 W EP2016058104 W EP 2016058104W WO 2016173840 A1 WO2016173840 A1 WO 2016173840A1
Authority
WO
WIPO (PCT)
Prior art keywords
pinion
steering
rack
bearing
elastic element
Prior art date
Application number
PCT/EP2016/058104
Other languages
German (de)
English (en)
Inventor
Mauricio STAMATI
Christian SPÄTH
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 WO2016173840A1 publication Critical patent/WO2016173840A1/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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings

Definitions

  • the present invention relates to a rack and pinion steering gear having the features of the preamble of claim 1.
  • the rack In order to reduce the games in contact between pinion and rack, which is to be understood in the context of the invention as a low-play engagement, the rack is usually pressed by a spring-loaded pressure piece against the pinion.
  • the rack must be movably mounted for this purpose in the pressure piece direction. This necessarily requires a flying mounting of the rack in the steering box.
  • the position of the rack does not always correspond to the zero position required for low-friction operation.
  • there is a tilt of the rack to the pinion and the pressure piece resulting in an increase in the frictional force and a deterioration of the driving feel.
  • the preload Since the maximum permissible friction represents an essential requirement in the specifications of a steering gear, the preload can not be chosen arbitrarily large. It can therefore occur operating cases in which it comes to acoustic problems such as rattling even at maximum preload.
  • the published patent application DE 10 2011 018 568 AI discloses a pinion, which is divided into two mutually rotatably mounted pinion parts, especially half pinion parts, which are biased in the tooth spaces of the rack by means of a spring force respectively with opposite tooth flanks of the toothing of the rack.
  • the teeth play of Lenkritzel rack engagement is directly at the point of origin, namely between the tooth flanks themselves, eliminated.
  • a pressure piece is not provided.
  • the associated with the two-piece pinion high complexity of the pinion shaft and a larger space requirement have a negative impact on the construction of the rack and pinion steering gear and its manufacturing costs.
  • rack and pinion steering gear for a motor vehicle is provided with a steering shaft connected to a steering pinion, which is in engagement with a displaceably mounted in a housing along a longitudinal axis rack and in the housing by means of a
  • Steering pinion bearing is mounted, wherein the steering pinion bearing at the end of the steering pinion distal end of the steering pinion has a roller bearing, and with a pressure member which holds the rack in playarmem engagement with the steering pinion, wherein the roller bearing is surrounded by an elastic element at least partially on the circumference and the elastic element in interaction allows pivoting of the steering pinion relative to the rack with a support ring supported in the housing.
  • the steering pinion By selectively pivoting the steering pinion can be set or delivered to the rack that the front and back of a pinion tooth at least partially engage or contact with the tooth flanks of the teeth of the rack and form a backlash-free engagement between pinion shaft and rack, thereby the driving experience is significantly improved.
  • the steering pinion bearing on the steering shaft side close to a rolling bearing, which is supported in the steering housing by means of a second elastic element.
  • the second elastic element is an elastic sleeve, which is coaxial both on its inside and on its outside of a further sleeve
  • Support is surrounded.
  • the elastic element is a plastic sleeve.
  • the steering pinion bearing according to the invention is designed so that the steering pinion is mounted orthogonally and / or parallel to the longitudinal axis of the rack pivot.
  • Fig. 1 a schematic representation of a rack and pinion steering
  • Fig. 3 a representation of an engagement between the steering pinion and the rack
  • Fig. 4 an exploded view of a steering pinion bearing according to the invention
  • Fig. 5 an exploded view of a two-sided steering pinion bearing, as well
  • Fig. 6 a spatial representation of a rack and pinion steering with servo assistance in
  • a 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 steering gear 4.
  • the rack steering gear 4 the rotational movement of the steering shaft 2 in a movement of a rack 5, whereby the articulated on a tie rod 6 wheel 7 of the vehicle performs a steering angle.
  • Ball joint configured connection between the rack 5 and the tie rods 6 is surrounded by a respective bellows 8 and protected against contamination.
  • the rotational movement of the steering shaft 2 is via a steering pinion 9 that with the rack 5 in a first
  • Gear area meshes, converted into a translational movement of the rack 5.
  • the rack and pinion steering can work in a conventional manner with a servo assistance.
  • the novel bearing of the steering pinion will be described in more detail below.
  • Assistance torque via a second pinion at a gear stage 15 in the rack 5 initiates.
  • FIG. 2 The components arranged in the housing 10 of FIG. 2 are partially illustrated in FIG. Spaced to a first gear portion 16 in which the steering pinion 9 meshes with the rack 5, a second gear portion 17 is provided, in which the second pinion in the gear stage 15 of the servo drive 14 is engaged with the rack 5.
  • the pressure piece 13 is on the first toothing region 16 of the rack 5
  • FIG 4 shows the engagement of steering pinion 9 and rack 5 of Figure 3 in an enlarged view.
  • the steering pinion 9 is rotatably mounted at its end remote from the steering shaft 18 via a needle bearing 19 in the steering housing 10, not shown.
  • the needle bearing 19 has an outer ring 20, which is coaxially surrounded by a first sleeve 21, a resilient second sleeve 22 and a collar 23 in a sandwich-like structure from the inside to the outside.
  • the first sleeve 21 is circumferentially in abutment with the outer ring 20.
  • the elastic second sleeve 22 and the adjusting ring 23 have bores 22 ', 23', which serve in conjunction with at least one screw for Deachs réelle the first sleeve 21 relative to the adjusting ring 23 ,
  • the adjusting ring 23 is supported on the circumference in the steering housing 10, so that over the Deachs réelle a bias or tilting of the steering pinion 9 are set relative to the rack 5 can.
  • the elastic sleeve is preferably a plastic sleeve. At the steering shaft near end of the pinion, the steering pinion bearing on a ball bearing 24.
  • the second pinion the inventive

Landscapes

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

Abstract

L'invention concerne un boîtier de direction à crémaillère destiné à un véhicule automobile, comportant un pignon de direction (9), qui est relié à un arbre de direction (9), qui est en prise avec une crémaillère (5) montée de manière mobile le long d'un axe longitudinal dans un carter, et qui est monté dans le carter (10) au moyen d'un support de pignon de direction. Le support de pignon de direction présente à une extrémité (18) du pignon de direction éloignée de l'arbre de direction (9) un palier à roulement (19). Un élément de pression (13) maintient la crémaillère sans jeu en prise avec le pignon de direction (9), le palier à roulement étant au moins en partie entouré côté périphérique par un élément élastique (22), et l'élément élastique (22) permettant, en interaction avec une bague de réglage (23) en appui dans le carter (10), un pivotement du pignon de direction (9) par rapport à la crémaillère (5).
PCT/EP2016/058104 2015-04-27 2016-04-13 Boîtier de direction muni d'un pignon monté élastiquement WO2016173840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015005301.9 2015-04-27
DE102015005301 2015-04-27

Publications (1)

Publication Number Publication Date
WO2016173840A1 true WO2016173840A1 (fr) 2016-11-03

Family

ID=55755580

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/058104 WO2016173840A1 (fr) 2015-04-27 2016-04-13 Boîtier de direction muni d'un pignon monté élastiquement

Country Status (1)

Country Link
WO (1) WO2016173840A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190017587A1 (en) * 2017-07-14 2019-01-17 Ford Global Technologies, Llc Rack-and-pinion gear for a motor vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223008A1 (de) * 1971-05-11 1972-11-16 Cam Gears Ltd Zahnstangengetriebe
FR2369467A1 (fr) * 1976-10-29 1978-05-26 Cam Gears Ltd Ensemble de pignon et cremaillere
DE4135750C1 (en) * 1991-10-30 1992-10-22 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De Camshaft for IC engine - is held in bearing with flexible element and eccentric ring
DE102005035020A1 (de) * 2005-07-27 2007-02-01 Zf Lenksysteme Gmbh Radialbewegliches Loslager für eine Welle eines Lenksystems
DE102011018568A1 (de) 2011-04-26 2012-10-31 Audi Ag Zahnstangen-Lenkgetriebe für ein Fahrzeug
DE102012103147A1 (de) * 2012-04-12 2013-10-17 Zf Lenksysteme Gmbh Loslager für ein lenkgetriebe
DE102013010361A1 (de) * 2013-06-21 2014-12-24 Thyssenkrupp Presta Ag Spielausgleich für eine Ritzellagerung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223008A1 (de) * 1971-05-11 1972-11-16 Cam Gears Ltd Zahnstangengetriebe
FR2369467A1 (fr) * 1976-10-29 1978-05-26 Cam Gears Ltd Ensemble de pignon et cremaillere
DE4135750C1 (en) * 1991-10-30 1992-10-22 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De Camshaft for IC engine - is held in bearing with flexible element and eccentric ring
DE102005035020A1 (de) * 2005-07-27 2007-02-01 Zf Lenksysteme Gmbh Radialbewegliches Loslager für eine Welle eines Lenksystems
DE102011018568A1 (de) 2011-04-26 2012-10-31 Audi Ag Zahnstangen-Lenkgetriebe für ein Fahrzeug
EP2517946A2 (fr) * 2011-04-26 2012-10-31 Audi AG Mécanisme de direction à crémaillère pour un véhicule
DE102012103147A1 (de) * 2012-04-12 2013-10-17 Zf Lenksysteme Gmbh Loslager für ein lenkgetriebe
DE102013010361A1 (de) * 2013-06-21 2014-12-24 Thyssenkrupp Presta Ag Spielausgleich für eine Ritzellagerung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190017587A1 (en) * 2017-07-14 2019-01-17 Ford Global Technologies, Llc Rack-and-pinion gear for a motor vehicle

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