WO1999008920A1 - Device with a shaft for the transmission of torque - Google Patents

Device with a shaft for the transmission of torque Download PDF

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Publication number
WO1999008920A1
WO1999008920A1 PCT/EP1998/004393 EP9804393W WO9908920A1 WO 1999008920 A1 WO1999008920 A1 WO 1999008920A1 EP 9804393 W EP9804393 W EP 9804393W WO 9908920 A1 WO9908920 A1 WO 9908920A1
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WO
WIPO (PCT)
Prior art keywords
shaft
balls
insert body
steel
transmitting
Prior art date
Application number
PCT/EP1998/004393
Other languages
German (de)
French (fr)
Inventor
Thomas Winkler
Original Assignee
INA Wälzlager Schaeffler oHG
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 Wälzlager Schaeffler oHG filed Critical INA Wälzlager Schaeffler oHG
Priority to DE19881144T priority Critical patent/DE19881144D2/en
Publication of WO1999008920A1 publication Critical patent/WO1999008920A1/en

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
    • B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0678—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body, i.e. the body carrying the circulating rolling elements, provided in the interior of a sleeve-like guide member defining the opposing raceways, e.g. in a telescopic shaft
    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/03—Shafts; Axles telescopic
    • F16C3/035—Shafts; Axles telescopic with built-in bearings
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • F16D3/065—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement by means of rolling elements
    • 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

Definitions

  • the invention relates to a device with a shaft for transmitting torque to a profile tube, of which a longitudinal end region of the shaft surrounds and which is axially displaceable relative to the shaft, wherein a plurality of endless rows of rotating rolling elements are arranged as linear guide elements between the shaft and the profile tube are.
  • a shaft for transmitting torque is known, which is designed as a telescopic steering shaft for motor vehicles. It has an outer, tubular shaft part and an inner, also tubular shaft part, between which balls are arranged as load-bearing rolling elements of ball revolutions. These supporting balls are supported directly on the shaft parts in grooves, so that both shaft parts must be designed as hardened steel parts. Longitudinal grooves are required for the raceways of the supporting balls both in the inner shaft part and in the outer shaft part. The construction is chosen so that corresponding bulges of the shaft parts have arisen in the areas of the grooves. This results in a high cost of materials and manufacturing.
  • the object of the invention is to enable the transmission of torques even from shafts which have lower hardness values than steel shafts, so that light metals, for example, are used as shaft materials or composite materials can be selected.
  • Such a linear guide is intended to enable axial strokes within very wide limits with transmission of the torques without play.
  • This object is achieved in that steel insert bodies are fastened to the shaft, on which raceways for force-transmitting rolling elements of the rotating rows are formed.
  • This solution has the advantage that the shaft can be made lightweight, since only the steel insert body needs to be hardened.
  • the endlessly rotating rolling elements can be balls.
  • a plurality of recirculating ball shoes can be arranged in the longitudinal end area of the shaft, each of which is composed of a hardened insert body made of steel, an outer cage part and an inner cage part, which form a raceway area for force-transmitting balls and two deflection areas and a return channel for returning balls.
  • the steel insert, the outer cage part and the inner cage part can also form two rotations, each with a raceway area for force-transmitting balls and two deflection areas and a return channel for returning balls.
  • two recirculating ball shoes can be arranged diametrically opposite one another.
  • the power transmission from the shaft via the insert body to the profile tube can additionally take place with rollers, for example needle rollers.
  • rollers for example needle rollers.
  • Each insert body can be positively fixed in relation to the shaft with a roller in the circumferential direction, which is inserted into an axially parallel groove of the shaft and a complementary groove formed on the inside of the insert body.
  • each ball race shoe can be axially fixed on the shaft between a molded shoulder of the shaft and a snap ring which is inserted into an annular groove of the shaft.
  • the recirculating ball shoes therefore each consist of a hardened insert body made of steel with ball raceways and two cage parts, which can be made of plastic.
  • the inserted rollers can be used as preload setting elements or as compensation elements for large track tolerances. It is therefore possible to produce the bearing arrangement entirely from non-cutting parts.
  • the resulting tolerances in the ball raceways can be compensated for by sorting the rollers in addition to sorting the balls.
  • angular errors in the raceways can be compensated for, since the steel plates are self-adjusting in the radial direction.
  • FIG. 1 shows a longitudinal section through a longitudinal end region of a shaft surrounded by a profile tube
  • Figure 2 shows a cross section through the shaft according to line ll-ll
  • Figure 3 shows a cross section through the shaft and the profile tube along the line III-III of Figure 1;
  • Figure 4 shows a cross section through the shaft and the profile tube according to line IV-IV of Figure 1;
  • Figure 5 shows the cage parts and the insert body of a recirculating ball shoe, as in a cross section along line V-V of
  • Figure 6 is a view of the outer surface of the recirculating ball shoe
  • Figure 7 shows a partial cross section through the shaft and the profile tube with an insert body in a modified version.
  • a device for the transmission of torques shown in FIGS. 1 to 6 has a shaft 1, the torque of which is to be transmitted to a profile tube 2.
  • the shaft 1 is surrounded by the profile tube 2 in a longitudinal end region.
  • it has grooves 3 which are arranged axially parallel on its outer surface.
  • Two such grooves 3 are arranged diametrically opposite one another on the shaft.
  • Rollers 4 are partially inserted in the grooves 3.
  • Each groove 3 has an arcuate cross-section, the diameter of the arc corresponding to the diameter of the inserted roller 4.
  • the rollers 4 are used for the positive connection of the shaft 1 in the circumferential direction to the profile tube 2.
  • two rollers 4 arranged axially one behind the other are shown in the groove 3.
  • a recirculating ball shoe On each side of the shaft 1, which has a groove 3, there is a recirculating ball shoe. This consists of an insert body 5, an inner cage part 6, an outer cage part 7 and balls arranged between the cage parts. In the assembled state, the recirculating ball shoe contains a track area with force-transmitting balls 8, a return channel with return balls 9 and two deflection areas which connect the force-transmitting track area and the return channel to one another at one end.
  • the insert body 5 of each ball circulation shoe rests with its inner, curved surface on the shaft 1 and here has a groove 10 with which it surrounds the regions of the rollers 4 protruding from the groove 3 of the shaft 1 in a form-fitting manner.
  • the insert body 5 On its side facing away from the shaft 1, the insert body 5 made of steel has two axially parallel raceways 12 for the force-transmitting balls 8. They are the inner raceways of the linear bearing formed by the rotating balls, the outer raceways are formed on the inner surface of the profile tube.
  • the profile tube 2 is thus mounted on the roller 1 so that it can move in the axial direction.
  • FIG. 7 shows an insert body which has an integrally formed driving lug 14 on its inner surface, with which it engages in the groove 3 of the shaft 1 in order to obtain a form-fitting connection of the shaft 1 with the profile tube 2 in the circumferential direction.
  • the driver lug 14 instead of a roller, the driver lug 14 thus engages in the axially parallel groove 3 of the shaft 1.
  • the groove 3 is complementary to the outside of the driving lug 14.

Abstract

The invention relates to a device with a shaft (1) for the transmission of torque movements on a splined tube (2) which surrounds a longitudinal end of the shaft (1) and can be axially moved in relation to the shaft (1). Continuous rows of peripheral rollers are arranged as linear guiding elements between the shaft (1) and the splined tube (2). According to the invention, the steel inserts (5) are fixed to the shaft (1) on which the tracks for the force-transmitting rollers of the rows are formed. This arrangement enables the use of a working material with a lower degree of hardness in relation to steel to produce the shaft (1).

Description

Vorrichtung mit einer Welle zur Übertragung von Drehmomenten Device with a shaft for the transmission of torques
Beschreibungdescription
Gebiet der ErfindungField of the Invention
Die Erfindung betrifft eine Vorrichtung mit einer Welle zur Übertragung von Drehmomenten auf ein Profilrohr, von welchem ein Längenendbereich der Welle umgeben und das relativ zu der Welle axial verschiebbar ist, wobei zwischen der Welle und dem Profilrohr mehrere jeweils endlose Reihen von umlaufenden Wälzkörpern als Linearführungselemente angeordnet sind.The invention relates to a device with a shaft for transmitting torque to a profile tube, of which a longitudinal end region of the shaft surrounds and which is axially displaceable relative to the shaft, wherein a plurality of endless rows of rotating rolling elements are arranged as linear guide elements between the shaft and the profile tube are.
Hintergrund der ErfindungBackground of the Invention
Aus der EP-OS 0 518 019 ist eine Welle zur Übertragung von Drehmomenten bekannt, die als teleskopische Lenkwelle für Kraftfahrzeuge ausgebildet ist. Sie weist ein äußeres, rohrförmiges Wellenteil und ein inneres, ebenfalls rohrförmi- ges Wellenteil auf, zwischen denen Kugeln als tragende Wälzkörper von Kugelumläufen angeordnet sind. Diese tragenden Kugeln stützen sich unmittelbar auf den Wellenteilen in Nuten ab, so daß hier beide Wellenteile als gehärtete Stahlteile ausgeführt sein müssen. Für die Laufbahnen der tragenden Kugeln sind Längsnuten sowohl in dem inneren Wellenteil als auch in dem äußeren Wellenteil erforderlich. Die Konstruktion ist hier so gewählt, daß entsprechende Auswölbungen der Wellenteile in den Bereichen der Nuten entstanden sind. Dadurch ergibt sich ein hoher Material- und Fertigungsaufwand.From EP-OS 0 518 019 a shaft for transmitting torque is known, which is designed as a telescopic steering shaft for motor vehicles. It has an outer, tubular shaft part and an inner, also tubular shaft part, between which balls are arranged as load-bearing rolling elements of ball revolutions. These supporting balls are supported directly on the shaft parts in grooves, so that both shaft parts must be designed as hardened steel parts. Longitudinal grooves are required for the raceways of the supporting balls both in the inner shaft part and in the outer shaft part. The construction is chosen so that corresponding bulges of the shaft parts have arisen in the areas of the grooves. This results in a high cost of materials and manufacturing.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt die Aufgabe zugrunde, die Übertragung von Drehmomenten auch von solchen Wellen zu ermöglichen, die geringere Härtewerte als Stahlwellen aufweisen, so daß als Wellenwerkstoffe beispielsweise Leichtmetalle oder Verbundwerkstoffe ausgewählt werden können. Eine solche Linearführung soll Axialhübe in sehr weiten Grenzen bei spielfreier Übertragung der Drehmomente ermöglichen.The object of the invention is to enable the transmission of torques even from shafts which have lower hardness values than steel shafts, so that light metals, for example, are used as shaft materials or composite materials can be selected. Such a linear guide is intended to enable axial strokes within very wide limits with transmission of the torques without play.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an der Welle Einsatzkörper aus Stahl befestigt sind, an denen Laufbahnen für kraftübertragende Wälzkörper der umlaufenden Reihen ausgebildet sind. Diese Lösung bietet den Vorteil, daß die Welle in Leichtbauweise ausgeführt werden kann, da nur der Einsatzkörper aus Stahl gehärtet zu sein braucht. Die endlos umlaufenden Wälzkörper können Kugeln sein.This object is achieved in that steel insert bodies are fastened to the shaft, on which raceways for force-transmitting rolling elements of the rotating rows are formed. This solution has the advantage that the shaft can be made lightweight, since only the steel insert body needs to be hardened. The endlessly rotating rolling elements can be balls.
In dem Längenendbereich der Welle können mehrere Kugelumlaufschuhe angeordnet sein, von denen jeder aus einem gehärteten Einsatzkörper aus Stahl, aus einem äußeren Käfigteil und einem inneren Käfigteil zusammengesetzt ist, die einen Laufbahnbereich für kraftübertragende Kugeln sowie zwei Umlenkbereiche und einen Rückführkanal für rücklaufende Kugeln bilden.A plurality of recirculating ball shoes can be arranged in the longitudinal end area of the shaft, each of which is composed of a hardened insert body made of steel, an outer cage part and an inner cage part, which form a raceway area for force-transmitting balls and two deflection areas and a return channel for returning balls.
In einem Kugelumlaufschuh können auch von dem Einsatzkörper aus Stahl, dem äußeren Käfigteil und dem inneren Käfigteil zwei Umläufe mit jeweils einem Laufbahnbereich für kraftübertragende Kugeln sowie zwei Umlenkbereichen und einem Rückführkanal für rücklaufende Kugeln gebildet sein. In dem Längenendbereich der Welle können zwei Kugelumlaufschuhe diametral gegenüberliegend angeordnet sein.In a recirculating ball shoe, the steel insert, the outer cage part and the inner cage part can also form two rotations, each with a raceway area for force-transmitting balls and two deflection areas and a return channel for returning balls. In the longitudinal end region of the shaft, two recirculating ball shoes can be arranged diametrically opposite one another.
Die Kraftübertragung von der Welle über den Einsatzkörper zu dem Profilrohr kann zusätzlich mit Rollen, beispielsweise Nadelrollen erfolgen. Jeder Einsatzkörper kann gegenüber der Welle mit einer Rolle in Umfangsrichtung formschlüssig festgelegt sein, die in eine achsparallele Nut der Welle und eine komplementäre, an der Innenseite des Einsatzkörpers ausgebildete Nut einge- setzt ist. Außerdem kann an der Welle jeder Kugelumlaufschuh zwischen einer angeformten Schulter der Welle und einem Sprengring axial festgelegt sein, der in eine Ringnut der Welle eingesetzt ist. Die Kugelumlaufschuhe bestehen also jeweils aus einem gehärteten Einsatzkörper aus Stahl mit Kugellaufbahnen und zwei Käfigteilen, die aus Kunststoff bestehen können. Sie sorgen dafür, daß der Kugelumlaufschuh zu einer kompletten und kompakten Einheit wird, in welcher die Kugeln störungsfrei aus den kraftübertragenden Laufbahnbereichen in die Rückführkanäle umgelenkt werden und somit ein Kugelumlauf entsteht. Die beiden Käfigteile werden jeweils zusammengesteckt, wobei sie den Einsatzkörper und die Kugeln verliersicher halten. Dieses ist für die Montage von großem Vorteil.The power transmission from the shaft via the insert body to the profile tube can additionally take place with rollers, for example needle rollers. Each insert body can be positively fixed in relation to the shaft with a roller in the circumferential direction, which is inserted into an axially parallel groove of the shaft and a complementary groove formed on the inside of the insert body. In addition, each ball race shoe can be axially fixed on the shaft between a molded shoulder of the shaft and a snap ring which is inserted into an annular groove of the shaft. The recirculating ball shoes therefore each consist of a hardened insert body made of steel with ball raceways and two cage parts, which can be made of plastic. They ensure that the recirculating ball shoe becomes a complete and compact unit in which the balls are diverted from the power-transmitting raceway areas into the return channels without disturbance, thus creating a recirculating ball. The two cage parts are put together, keeping the insert body and the balls captive. This is a great advantage for assembly.
Die eingelegten Rollen können als Vorspannungs-Einstellelemente bzw. als Ausgleichselemente bei großen Laufbahntoleranzen verwendet werden. Es besteht also die Möglichkeit, die Lageranordnung komplett aus spanlos geformten Teilen herzustellen. Die daraus resultierenden Toleranzen in den Kugellaufbahnen können durch Zusortieren der Rollen zusätzlich zum Zusortieren der Kugeln kompensiert werden. Außerdem können Winkelfehler in den Laufbahnen ausgeglichen werden, da die Stahlplatten in radialer Richtung selbsteinstellend sind.The inserted rollers can be used as preload setting elements or as compensation elements for large track tolerances. It is therefore possible to produce the bearing arrangement entirely from non-cutting parts. The resulting tolerances in the ball raceways can be compensated for by sorting the rollers in addition to sorting the balls. In addition, angular errors in the raceways can be compensated for, since the steel plates are self-adjusting in the radial direction.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigenEmbodiments of the invention are shown in the drawing and are described in more detail below. Show it
Figur 1 einen Längsschnitt durch einen von einem Profilrohr um- gebenen Längenendbereich einer Welle;1 shows a longitudinal section through a longitudinal end region of a shaft surrounded by a profile tube;
Figur 2 einen Querschnitt durch die Welle gemäß Linie ll-ll derFigure 2 shows a cross section through the shaft according to line ll-ll
Figur 1 ;Figure 1;
Figur 3 einen Querschnitt durch die Welle und das Profilrohr gemäß Linie lll-lll der Figur 1 ; Figur 4 einen Querschnitt durch die Welle und das Profilrohr gemäß Linie IV-IV der Figur 1 ;Figure 3 shows a cross section through the shaft and the profile tube along the line III-III of Figure 1; Figure 4 shows a cross section through the shaft and the profile tube according to line IV-IV of Figure 1;
Figur 5 die Käfigteile und den Einsatzkörper eines Kugelumlauf- schuhs, wie sie in einem Querschnitt gemäß Linie V-V derFigure 5 shows the cage parts and the insert body of a recirculating ball shoe, as in a cross section along line V-V of
Figur 6 erscheinen, jedoch in explosionsartiger Darstellung;Figure 6 appear, but in an exploded view;
Figur 6 eine Ansicht der Mantelfläche des Kugelumlaufschuhs;Figure 6 is a view of the outer surface of the recirculating ball shoe;
Figur 7 einen Teilquerschnitt durch die Welle und das Profilrohr mit einem Einsatzkörper in abgewandelter Ausführung.Figure 7 shows a partial cross section through the shaft and the profile tube with an insert body in a modified version.
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Eine in den Figuren 1 bis 6 dargestellte Vorrichtung zur Übertragung von Drehmomenten weist eine Welle 1 auf, deren Drehmoment auf ein Profilrohr 2 übertragen werden soll. Die Welle 1 ist in einem Längenendbereich von dem Profilrohr 2 umgeben. Hier weist sie Nuten 3 auf, die an ihrer äußeren Ober- fläche achsparallel angeordnet sind. Es sind zwei solche Nuten 3 diametral gegenüberliegend an der Welle angeordnet. In den Nuten 3 sind Rollen 4 teilweise eingelegt. Jede Nut 3 hat einen kreisbogenförmigen Querschnitt, wobei der Durchmesser des Kreisbogens dem Durchmesser der eingelegten Rolle 4 entspricht. Die Rollen 4 dienen der formschlüssigen Verbindung der Welle 1 in Umfangsrichtung mit dem Profilrohr 2. In Figur 1 sind in der Nut 3 zwei axial hintereinander angeordnete Rollen 4 dargestellt. An jeder Seite der Welle 1 , die eine Nut 3 aufweist, befindet sich ein Kugelumlaufschuh. Dieser besteht aus einem Einsatzkörper 5, einem inneren Käfigteil 6, einem äußeren Käfigteil 7 und zwischen den Käfigteilen angeordneten Kugeln. Im zusammen- gesetzten Zustand enthält der Kugelumlaufschuh einen Laufbahnbereich mit kraftübertragenden Kugeln 8, einen Rückführkanal mit rücklaufenden Kugeln 9 und zwei Umlenkbereiche, die den kraftübertragenden Laufbahnbereich und den Rückführkanal jeweils an einem Ende miteinander verbinden. Von jedem Kugelumlaufschuh liegt der Einsatzkörper 5 mit seiner inneren, gewölbten Oberfläche an der Welle 1 an und weist hier eine Nut 10 auf, mit welcher er die aus der Nut 3 der Welle 1 herausragenden Bereiche der Rollen 4 formschlüssig umgibt. An seiner von der Welle 1 abgewandten Seite weist der Einsatzkörper 5 aus Stahl zwei achsparallele Laufbahnen 12 für die kraftübertragenden Kugeln 8 auf. Sie sind die inneren Laufbahnen des von den umlaufenden Kugeln gebildeten Linearlagers, die äußeren Laufbahnen sind an der inneren Oberfläche des Profilrohres ausgebildet. Das Profilrohr 2 ist also gegenüber der Welle 1 in Axialrichtung verschiebbar wälzgelagert.A device for the transmission of torques shown in FIGS. 1 to 6 has a shaft 1, the torque of which is to be transmitted to a profile tube 2. The shaft 1 is surrounded by the profile tube 2 in a longitudinal end region. Here it has grooves 3 which are arranged axially parallel on its outer surface. Two such grooves 3 are arranged diametrically opposite one another on the shaft. Rollers 4 are partially inserted in the grooves 3. Each groove 3 has an arcuate cross-section, the diameter of the arc corresponding to the diameter of the inserted roller 4. The rollers 4 are used for the positive connection of the shaft 1 in the circumferential direction to the profile tube 2. In FIG. 1, two rollers 4 arranged axially one behind the other are shown in the groove 3. On each side of the shaft 1, which has a groove 3, there is a recirculating ball shoe. This consists of an insert body 5, an inner cage part 6, an outer cage part 7 and balls arranged between the cage parts. In the assembled state, the recirculating ball shoe contains a track area with force-transmitting balls 8, a return channel with return balls 9 and two deflection areas which connect the force-transmitting track area and the return channel to one another at one end. The insert body 5 of each ball circulation shoe rests with its inner, curved surface on the shaft 1 and here has a groove 10 with which it surrounds the regions of the rollers 4 protruding from the groove 3 of the shaft 1 in a form-fitting manner. On its side facing away from the shaft 1, the insert body 5 made of steel has two axially parallel raceways 12 for the force-transmitting balls 8. They are the inner raceways of the linear bearing formed by the rotating balls, the outer raceways are formed on the inner surface of the profile tube. The profile tube 2 is thus mounted on the roller 1 so that it can move in the axial direction.
Für die axiale Festlegung der Kugelumlaufschuhe an der Welle 1 weist diese eine umlaufende Schulter 1 2 auf, an welcher sich jeweils das innere Käfigteil 6 eines Kugelumlaufschuhs mit einem Ende axial abstützt. An dem anderen Ende des Umlaufschuhs liegt ein Sprengring 13 an, der hier in eine Ringnut der Welle 1 eingesetzt ist. Jeder Umlaufschuh ist daher sowohl in axialer Richtung als auch infolge der Rollen 4 in Umfangsrichtung an der Welle 1 festgelegt.For the axial fixing of the recirculating ball shoes on the shaft 1, this has a circumferential shoulder 1 2, on each of which the inner cage part 6 of a recirculating ball shoe is axially supported with one end. At the other end of the revolving shoe there is a snap ring 13, which is inserted here in an annular groove of the shaft 1. Each revolving shoe is therefore fixed to the shaft 1 both in the axial direction and as a result of the rollers 4 in the circumferential direction.
In Figur 7 ist ein Einsatzkörper dargestellt, der an seiner inneren Oberfläche eine angeformte Mitnehmernase 14 aufweist, mit welcher er in die Nut 3 der Welle 1 eingreift, um eine in Umfangsrichtung formschlüssige Verbindung der Welle 1 mit dem Profilrohr 2 zu erhalten. Statt einer Rolle greift hier also die Mitnehmernase 14 in die achsparallele Nut 3 der Welle 1 ein. Die Nut 3 ist komplementär zur Außenseite der Mitnehmernase 14 ausgebildet. FIG. 7 shows an insert body which has an integrally formed driving lug 14 on its inner surface, with which it engages in the groove 3 of the shaft 1 in order to obtain a form-fitting connection of the shaft 1 with the profile tube 2 in the circumferential direction. Instead of a roller, the driver lug 14 thus engages in the axially parallel groove 3 of the shaft 1. The groove 3 is complementary to the outside of the driving lug 14.
BezugszahlenlisteLIST OF REFERENCE NUMBERS
I Welle 2 Profil röhrI shaft 2 profile tube
3 Nut Rolle3 groove roller
5 Einsatzkörper5 insert bodies
6 inneres Käfigteil 7 äußeres Käfigteil6 inner cage part 7 outer cage part
8 kraftübertragende Kugel8 force-transmitting ball
9 rücklaufende Kugel9 returning ball
10 Nut10 groove
I I Laufbahn 12 SchulterI I career 12 shoulder
1 3 Sprengring1 3 snap ring
14 Mitnehmernase 14 driving nose

Claims

Patentansprüche claims
1 . Vorrichtung mit einer Welle (1 ) zur Übertragung von Drehmomenten auf ein Profilrohr (2), von welchem ein Längenendbereich der Welle (1 ) umgeben und das relativ zu der Welle (1 ) axial verschiebbar ist, wobei zwischen der Welle (1 ) und dem Profilrohr (2) mehrere jeweils endlose Reihen von umlaufenden Wälzkörpern als Linearführungselemente angeordnet sind, dadurch gekenn- zeichnet, daß an der Welle (1 ) Einsatzkörper (5) aus Stahl befestigt sind, an denen Laufbahnen (12) für kraftübertragende Wälzkörper der Reihen ausgebildet sind.1 . Device with a shaft (1) for transmitting torque to a profile tube (2), of which a longitudinal end region of the shaft (1) surrounds and which is axially displaceable relative to the shaft (1), between the shaft (1) and the Profile tube (2) a plurality of endless rows of rotating rolling elements are arranged as linear guide elements, characterized in that steel insert bodies (5) are fastened to the shaft (1), on which raceways (12) for force-transmitting rolling elements of the rows are formed .
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die in endlosen Reihen umlaufenden Wälzkörper Kugeln (8, 9) sind.2. Device according to claim 1, characterized in that the rolling bodies rotating in endless rows are balls (8, 9).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß in dem Längenendbereich der Welle (1 ) mehrere Kugelumlaufschuhe angeordnet sind, von denen jeder aus einem gehärteten Einsatzkörper (5) aus Stahl, einem äußeren Käfigteil (7) und einem inneren Käfigteil (6) zusammengesetzt ist, wobei diese Teile einen Laufbahnbereich für kraftübertragende Kugeln (8) sowie zwei Umlenkbereiche und einen Rückführkanal für rücklaufende Kugeln (9) bilden.3. Apparatus according to claim 2, characterized in that in the longitudinal end region of the shaft (1) a plurality of recirculating ball shoes are arranged, each of which consists of a hardened insert body (5) made of steel, an outer cage part (7) and an inner cage part (6) is composed, these parts forming a track area for force-transmitting balls (8) and two deflection areas and a return channel for returning balls (9).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß in einem Kugelumlaufschuh von dem Einsatzkörper (5) aus Stahl, dem äußeren Käfigteil4. The device according to claim 3, characterized in that in a ball shoe from the insert body (5) made of steel, the outer cage part
(7) und dem inneren Käfigteil (6) zwei Umläufe mit jeweils einem Laufbahnbereich für kraftübertragende Kugeln (8) sowie zwei Umlenkbereichen und einem Rückführkanal für rücklaufende Kugeln (9) gebildet sind.(7) and the inner cage part (6) two revolutions, each with a raceway area for force-transmitting balls (8) and two deflection areas and a return channel for returning balls (9) are formed.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß in dem Längenendbereich der Welle (1 ) zwei Kugelumlaufschuhe diametral gegenüberliegend angeordnet sind. 5. The device according to claim 4, characterized in that in the longitudinal end region of the shaft (1) two ball shoes are arranged diametrically opposite.
6. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß jeder Einsatzkörper (5) gegenüber der Welle (1 ) mit einer Rolle (4) formschlüssig festgelegt ist, die in eine achsparallele Nut (3) der Welle (1 ) und eine komplementäre, an der Innenseite des Einsatzkörpers (5) ausgebildete Nut (10) eingesetzt ist.6. The device according to claim 1, characterized in that each insert body (5) relative to the shaft (1) with a roller (4) is positively fixed in an axially parallel groove (3) of the shaft (1) and a complementary groove (10) formed on the inside of the insert body (5) is inserted.
7. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß jeder Einsatzkörper gegenüber der Welle (1 ) mit einer angeformten Mitnehmernase (14) formschlüssig festgelegt ist, die in eine achsparallele Nut (3) der Welle (1 ) eingesetzt ist.7. The device according to claim 1, characterized in that each insert body with respect to the shaft (1) with a molded driver lug (14) is positively fixed, which is inserted in an axially parallel groove (3) of the shaft (1).
8. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jeder Kugelumlaufschuh an der Welle (1 ) zwischen einer angeformten Schulter (12) und einem Sprengring (1 3) axial festgelegt ist, der in eine Ringnut der Welle (1 ) eingesetzt ist. 8. The device according to claim 3, characterized in that each ball shoe on the shaft (1) between an integrally formed shoulder (12) and a snap ring (1 3) is axially fixed, which is inserted into an annular groove of the shaft (1).
PCT/EP1998/004393 1997-08-16 1998-07-15 Device with a shaft for the transmission of torque WO1999008920A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19881144T DE19881144D2 (en) 1997-08-16 1998-07-15 Device with a shaft for the transmission of torques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19735443A DE19735443A1 (en) 1997-08-16 1997-08-16 Torque-transmitting shaft for profiled pipe
DE19735443.2 1997-08-16

Publications (1)

Publication Number Publication Date
WO1999008920A1 true WO1999008920A1 (en) 1999-02-25

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ID=7839094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/004393 WO1999008920A1 (en) 1997-08-16 1998-07-15 Device with a shaft for the transmission of torque

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DE (2) DE19735443A1 (en)
WO (1) WO1999008920A1 (en)

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US7322607B2 (en) 2002-06-11 2008-01-29 Nsk Ltd. Telescopic shaft for steering vehicle and telescopic shaft for steering vehicle with cardan shaft coupling
US7338078B2 (en) 2002-10-24 2008-03-04 Nsk Ltd. Extensible shaft for steering of vehicle
US7338382B2 (en) 2002-10-10 2008-03-04 Nsk Ltd. Extendable vehicle steering shaft
US7416216B2 (en) 2002-11-29 2008-08-26 Nsk Ltd. Telescopic shaft for vehicle steering

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DE102006029784A1 (en) * 2006-06-27 2008-01-03 Ab Skf Drive shaft component for locomotive, has shaft parts with respective coupling sections, profiled rails provided at casing, and slots fastened to respective shaft parts by wedge, where slots are adjustable by rolling bodies along one rail
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US7338078B2 (en) 2002-10-24 2008-03-04 Nsk Ltd. Extensible shaft for steering of vehicle
US7416216B2 (en) 2002-11-29 2008-08-26 Nsk Ltd. Telescopic shaft for vehicle steering

Also Published As

Publication number Publication date
DE19881144D2 (en) 2000-02-10
DE19735443A1 (en) 1999-02-18

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