DE102008054441A1 - Bearing i.e. pivot bearing, for shaft in e.g. pinion steering gear of steering system, has pivot ring, where screw with axially formed wedge-shape is inserted into recess so that ring is radially fixed in housing in clearance-free manner - Google Patents

Bearing i.e. pivot bearing, for shaft in e.g. pinion steering gear of steering system, has pivot ring, where screw with axially formed wedge-shape is inserted into recess so that ring is radially fixed in housing in clearance-free manner Download PDF

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Publication number
DE102008054441A1
DE102008054441A1 DE102008054441A DE102008054441A DE102008054441A1 DE 102008054441 A1 DE102008054441 A1 DE 102008054441A1 DE 102008054441 A DE102008054441 A DE 102008054441A DE 102008054441 A DE102008054441 A DE 102008054441A DE 102008054441 A1 DE102008054441 A1 DE 102008054441A1
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Germany
Prior art keywords
bearing
ring
pivot
housing
screw
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Granted
Application number
DE102008054441A
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German (de)
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DE102008054441B4 (en
Inventor
Achim Schust
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.)
Robert Bosch Automotive Steering GmbH
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ZF Lenksysteme GmbH
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Priority to DE102008054441.8A priority Critical patent/DE102008054441B4/en
Publication of DE102008054441A1 publication Critical patent/DE102008054441A1/en
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Publication of DE102008054441B4 publication Critical patent/DE102008054441B4/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0409—Electric motor acting on the steering column
    • 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Gear Transmission (AREA)
  • Power Steering Mechanism (AREA)
  • Support Of The Bearing (AREA)

Abstract

The bearing has a four-point bearing i.e. ball bearing, rotatably supported in a pivot ring (1) that is attached in a housing of a gear by an adjustable screw (3). The pivot ring has a wedge-shaped recess in an axial direction, and the screw with an axially formed wedge-shape is inserted into the recess so that the pivot ring is radially fixed in the housing in a clearance-free manner. A clearance of the four-point bearing in the ring is adjusted by the screw, and a spring element is arranged between the screw and ring and is made of rubber or plastic.

Description

Technisches GebietTechnical area

Die Erfindung betrifft die Lagerung einer Welle in einem Getriebe eines Lenksystems nach dem Oberbegriff des Anspruchs 1.The The invention relates to the mounting of a shaft in a transmission of a Steering system according to the preamble of claim 1.

Stand der TechnikState of the art

In Getrieben von Lenksystemen, insbesondere in Zahnstangenlenkgetrieben oder Schneckenradgetrieben sind Wellen mit treibenden Rädern, wie Ritzel oder Schnecken, in einem Festlager und einem radialbeweglichen Loslager gelagert.In Driven by steering systems, especially in rack and pinion steering gearboxes or worm gear drives are shafts with driving wheels, like pinions or screws, in a fixed bearing and a radially movable one Floating bearing stored.

Aus der DE 101 61 715 A1 ist eine gattungsgemäße Wellenlagerung innerhalb eines Schneckenradgetriebes für den Einsatz in einer elektrischen Hilfskraftlenkung bekannt. Bei dem Schneckenradgetriebe sind eine Schnecke und ein Schneckenrad in einem Gehäuse angeordnet. Die Schneckenwelle ist in einer Wellenlagerung gelagert, die ein Kugellager in Form eines Vierpunktlagers aufweist. Das Vierpunktlager lässt sich in einem Schwenkring um einen Lagerpunkt drehen, wodurch das Verzahnungsspiel zwischen Schnecke und Schneckenrad während der gesamten Lebensdauer des Getriebes konstant gehalten werden kann.From the DE 101 61 715 A1 is a generic shaft bearing within a worm gear known for use in an electric power steering system. In the worm gear, a worm and a worm wheel are arranged in a housing. The worm shaft is mounted in a shaft bearing, which has a ball bearing in the form of a four-point bearing. The four-point bearing can be rotated in a swivel ring around a bearing point, whereby the gear play between worm and worm wheel can be kept constant throughout the life of the transmission.

Das Vierpunktlager wird in dem Schwenkring zur Vermeidung von Geräuschen relativ spielfrei geführt. Ebenso muss das gesamte Schwenklager relativ spielfrei im Gehäuse befestigt sein. Für die Befestigung ist eine Stellschraube vorgesehen, welche axial den Schwenkring gegen das Gehäuse drückt. Radial wird das Schwenklager im Gehäuse mit einer Spielpassung gehalten.The Four-point bearing is in the swivel ring to avoid noise guided relatively free of play. Likewise, the entire pivot bearing needs be attached relatively free of play in the housing. For the attachment is an adjusting screw provided which axially presses the swivel ring against the housing. Radial is the pivot bearing in the housing with a clearance fit held.

Aufgrund von Fertigungstoleranzen ist das axiale Spiel des Vierpunktlagers in dem Schwenkring unter Last relativ hoch. Die Toleranz kann auch nicht zu gering gehalten werden, da das Lager in dem Schwenkring schwenkbar bleiben muss. Allerdings führen schon geringe Axialspiele unter axialer Belastung im Getriebe zu Geräuschen.by virtue of Manufacturing tolerances is the axial play of the four-point bearing in the swing ring under load relatively high. The tolerance can also not be kept too low, since the bearing in the swivel ring must remain pivotable. However, already lead low Axial play under axial load in the transmission to noise.

Aufgabenstellungtask

Der Erfindung liegt die Aufgabe zugrunde, ein Schwenklager zu schaffen, bei dem das axiale und radiale Spiel des kompletten Schwenklagers im Gehäuse spielfrei eingestellt werden kann. Gleichzeitig soll das axiale und radiale Spiel des Vierpunktlagers im Schwenkring einstellbar sein.Of the Invention has for its object to provide a pivot bearing, in which the axial and radial play of the complete pivot bearing can be adjusted in the housing without play. simultaneously should the axial and radial play of the four-point bearing in the pivot ring be adjustable.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.These The object is achieved by the characterizing Characteristics of claim 1 solved.

Technische LösungTechnical solution

Dadurch, dass die Stellschraube mit einer keilförmigen Anformung in eine keilförmige Aussparung an dem Schwenkring eingesetzt wird, kann der Schwenkring im Gehäuse spielfrei radial eingespannt werden.Thereby, that the set screw with a wedge-shaped Anformung used in a wedge-shaped recess on the pivot ring is, the swivel ring in the housing can play radially be clamped.

Die keilförmige Anformung an der Stellschraube weist eine schräge Fläche auf, die radial nach innen gerichtet ist. Beim Einschrauben der Stellschraube wirkt dadurch eine Kraft auf die schraege Flaeche des Schwenkrings, welche diesen nach innen verformt. Durch diesen Vorgang wird das axiale Spiel, welches das Vierpunktlager im Schwenkring hat, einstellbar gemacht.The wedge-shaped Anformung on the screw has an oblique Surface facing radially inward. When screwing the adjusting screw thereby acts a force on the slanted surface the swivel ring, which deforms this inward. Through this Process becomes the axial play that the four-point bearing has in the pivot ring, made adjustable.

Am äußeren Umfang der keilförmigen Anformung ist ein federnder Ring angelegt. Beim Einschrauben der Stellschraube befindet sich der Ring axial zwischen der Stellschraube und dem Schwenkring und sorgt dort für eine axiale Vorspannung des Schwenklagers gegen das Gehäuse. Somit kann nie ein axiales Spiel zwischen Gehäuse und Schwenklager entstehen. Der federnde Ring kann beispielsweise aus Gummi oder Kunststoff sein.On the outside The extent of the wedge-shaped Anformung is a resilient ring created. When screwing the screw is the Ring axially between the set screw and the swivel ring and ensures there for an axial bias of the pivot bearing against the housing. Thus, never an axial play between Housing and pivot bearing arise. The springy ring can for example, be made of rubber or plastic.

Durch die Spielfreiheit des Schwenklagers im Gehäuse in axialer und radialer Richtung können die Geräusche im Lenkgetriebe erheblich vermindert werden. Da das Spiel des Vierpunktlagers in dem Schwenkring nun eingestellt werden kann, ist die Lagerung nun unabhängig von Fertigungstoleranzen.By the backlash of the pivot bearing in the housing in the axial and radial direction, the noise in the Steering gear can be significantly reduced. Because the game of four-point camp can now be adjusted in the swivel ring, the storage now independent of manufacturing tolerances.

Die Position der Stellschraube muss nach der Montage in der eingestellten Position sichergestellt werden. Vorzugsweise wird die Stellschraube deshalb mit dem Gehäuse verstemmt oder verklebt.The Position of the adjusting screw must be set after installation in the Position be ensured. Preferably, the set screw is therefore caulked or glued to the housing.

Ausführungsbeispielembodiment

Ein Ausführungsbeispiel ist nachstehend anhand der Zeichnung gezeigt.One Embodiment is described below with reference to the drawing shown.

1 zeigt einen schematischen Querschnitt durch ein Schwenklager eines Getriebes eines Lenksystems. 1 shows a schematic cross section through a pivot bearing of a transmission of a steering system.

In 1 ist in einem schematischen Querschnitt durch ein Gehäuse eines Getriebes ein Schwenklager gezeigt, indem eine Welle gelagert ist. Die Welle trägt die Schnecke des als Schneckenradgetriebe ausgebildeten Getriebes. Die Schnecke ist dabei drehfest mit der Welle verbunden.In 1 is shown in a schematic cross section through a housing of a transmission, a pivot bearing by a shaft is supported. The shaft carries the worm of the worm gear designed as a transmission. The worm is rotatably connected to the shaft.

Das Schwenklager umfasst einen Schwenkring (1) mit dem das komplette Lager in das Gehäuse eingesetzt wird. An einer Seite weist der Schwenkring (1) axial eine keilförmige Aussparung auf.The pivot bearing comprises a pivot ring ( 1 ) with which the complete bearing is inserted into the housing. On one side, the swivel ring ( 1 ) Axially a wedge-shaped recess.

In dem Schwenkring befindet sich ein Vierpunktlager, welches hier als Kugellager ausgeführt ist. Der Außenring (4) des Vierpunktlagers wird in dem Schwenkring drehbar geführt. Der Innenring (5) des Vierpunktlagers ist auf der Welle des Schneckenradgetriebes fixiert.In the swivel ring is a four-point bearing, which is designed here as a ball bearing. The outer ring ( 4 ) of the four-point bearing is rotatably guided in the pivot ring. The inner ring ( 5 ) of the four-point bearing is fixed on the shaft of the worm gear.

In das Gehäuse ist axial gegen das Schwenklager eine Stellschraube (3) eingeschraubt. Die Stellschraube weist eine keilförmige Anformung auf, die bei der Montage in die keilförmige Aussparung des Schwenkrings eindringt und das Schwenklager dabei fixiert.In the housing is axially against the pivot bearing a set screw ( 3 screwed in). The screw has a wedge-shaped Anformung, which penetrates during assembly in the wedge-shaped recess of the pivot ring and fixed the pivot bearing.

Am äußeren Umfang der keilförmigen Anformung ist ein federnder Ring (2) angelegt. Nach dem Einschrauben der Stellschraube befindet sich der Ring axial zwischen der Stellschraube und dem Schwenkring und sorgt dort für eine axiale Vorspannung des Schwenklagers gegen das Gehäuse.At the outer periphery of the wedge-shaped Anformung is a resilient ring ( 2 ). After screwing the screw, the ring is axially between the screw and the swivel ring and there provides for an axial bias of the pivot bearing against the housing.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 10161715 A1 [0003] - DE 10161715 A1 [0003]

Claims (6)

Lagerung einer Welle in einem Getriebes eines Lenksystems, mit einem Schwenkring (1) und einem Vierpunktlager, welches in dem Schwenkring drehbar gelagert ist, wobei der Schwenkring in einem Gehäuse des Getriebes mit einer Stellschraube (3) befestigt ist, dadurch gekennzeichnet, dass der Schwenkring (1) in axialer Richtung eine keilförmige Aussparung aufweist, dass die Stellschraube (3) mit einer axial angeformten Keilform in die Aussparung eingesetzt wird und damit der Schwenkring im Gehäuse spielfrei radial eingespannt wird.Bearing of a shaft in a transmission of a steering system, with a swivel ring ( 1 ) and a four-point bearing, which is rotatably mounted in the pivot ring, wherein the pivot ring in a housing of the transmission with a set screw ( 3 ), characterized in that the swivel ring ( 1 ) has a wedge-shaped recess in the axial direction that the adjusting screw ( 3 ) is inserted into the recess with an axially formed wedge shape and thus the pivot ring is clamped radially free of play in the housing. Lagerung einer Welle nach Anspruch 1, dadurch gekennzeichnet, dass mit der Stellschraube (3) das Spiel des Vierpunktlagers in dem Schwenkring (1) genau eingestellt werden kann.Bearing of a shaft according to claim 1, characterized in that with the adjusting screw ( 3 ) the play of the four-point bearing in the swivel ring ( 1 ) can be set exactly. Lagerung einer Welle nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die keilförmige Anformung der Stellschraube radial nach innen geneigte Flächen aufweist.Supporting a shaft according to the claims 1 and 2, characterized in that the wedge-shaped Anformung the adjusting screw has radially inwardly inclined surfaces. Lagerung einer Welle nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass zwischen der Stellschraube und dem Schwenkring ein Federelement angeordnet ist um das Schwenklager gegen das Gehäuse axial vorzuspannen.Supporting a shaft according to the claims 1 to 3, characterized in that between the screw and the swivel ring a spring element is arranged around the pivot bearing axially bias against the housing. Lagerung einer Welle nach Anspruch 4, dadurch gekennzeichnet, dass das Federelement aus Gummi oder Kunststoff besteht.Bearing of a shaft according to claim 4, characterized that the spring element made of rubber or plastic. Lagerung einer Welle nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass die Stellschraube gegen das Gehäuse verstemmt ist.Supporting a shaft according to the claims 1 to 5, characterized in that the adjusting screw against the Housing is caulked.
DE102008054441.8A 2008-12-10 2008-12-10 Swivel bearing for the shaft of a steering system Expired - Fee Related DE102008054441B4 (en)

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DE102008054441.8A DE102008054441B4 (en) 2008-12-10 2008-12-10 Swivel bearing for the shaft of a steering system

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DE102008054441B4 DE102008054441B4 (en) 2015-06-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003749A1 (en) 2013-03-06 2014-09-11 Thyssenkrupp Presta Aktiengesellschaft Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems
CN104832544A (en) * 2015-05-18 2015-08-12 江苏联动轴承有限公司 Special self-lubricating self-aligning worm assembly bearing for automobile EPS (electronic power steering)
CN107463753A (en) * 2017-08-16 2017-12-12 博世华域转向***有限公司 A kind of structure and tilt angle calculation method of improvement EPSc driver element noises
CN107614928A (en) * 2015-06-29 2018-01-19 日本精工株式会社 Worm type of reduction gearing
WO2019174961A1 (en) * 2018-03-15 2019-09-19 Thyssenkrupp Presta Ag Helical gear transmission comprising a pivot bearing with a defined pivot axis

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161715A1 (en) 2001-12-15 2003-06-18 Zf Lenksysteme Gmbh Electrical power steering for motor vehicle has hydraulic pressure biasing device, coupling for connecting drive shaft to worm and pivotable bearing in coupling region

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3799236B2 (en) * 2001-01-22 2006-07-19 株式会社ジェイテクト Electric power steering device
JPH0735147A (en) * 1993-07-26 1995-02-03 Hitachi Ltd Dynamo-electric machine
DE10349783A1 (en) * 2003-10-24 2005-05-25 Ina-Schaeffler Kg Radial bearing for a drive shaft of vehicles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161715A1 (en) 2001-12-15 2003-06-18 Zf Lenksysteme Gmbh Electrical power steering for motor vehicle has hydraulic pressure biasing device, coupling for connecting drive shaft to worm and pivotable bearing in coupling region

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003749A1 (en) 2013-03-06 2014-09-11 Thyssenkrupp Presta Aktiengesellschaft Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems
WO2014135382A1 (en) 2013-03-06 2014-09-12 Thyssenkrupp Presta Ag Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems
US9988071B2 (en) 2013-03-06 2018-06-05 Thyssenkrupp Presta Ag Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems
CN104832544A (en) * 2015-05-18 2015-08-12 江苏联动轴承有限公司 Special self-lubricating self-aligning worm assembly bearing for automobile EPS (electronic power steering)
CN107614928A (en) * 2015-06-29 2018-01-19 日本精工株式会社 Worm type of reduction gearing
CN107463753A (en) * 2017-08-16 2017-12-12 博世华域转向***有限公司 A kind of structure and tilt angle calculation method of improvement EPSc driver element noises
CN107463753B (en) * 2017-08-16 2023-10-24 博世华域转向***有限公司 Structure for improving noise of EPSc driving unit and inclination angle calculation method
WO2019174961A1 (en) * 2018-03-15 2019-09-19 Thyssenkrupp Presta Ag Helical gear transmission comprising a pivot bearing with a defined pivot axis
CN111868402A (en) * 2018-03-15 2020-10-30 蒂森克虏伯普利斯坦股份公司 Bevel gear transmission comprising a pivot bearing with a defined pivot axis
CN111868402B (en) * 2018-03-15 2022-05-27 蒂森克虏伯普利斯坦股份公司 Bevel gear transmission comprising a pivot bearing with a defined pivot axis
US11873036B2 (en) 2018-03-15 2024-01-16 Thyssenkrupp Presta Ag Helical gear transmission comprising a pivot bearing with a defined pivot axis

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Owner name: ROBERT BOSCH AUTOMOTIVE STEERING GMBH, DE

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