WO2010088987A1 - Ensemble palier linéaire pour un guide de broche de direction télescopique - Google Patents

Ensemble palier linéaire pour un guide de broche de direction télescopique Download PDF

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Publication number
WO2010088987A1
WO2010088987A1 PCT/EP2009/066578 EP2009066578W WO2010088987A1 WO 2010088987 A1 WO2010088987 A1 WO 2010088987A1 EP 2009066578 W EP2009066578 W EP 2009066578W WO 2010088987 A1 WO2010088987 A1 WO 2010088987A1
Authority
WO
WIPO (PCT)
Prior art keywords
raceway sleeve
shaft
raceway
sleeve
linear bearing
Prior art date
Application number
PCT/EP2009/066578
Other languages
German (de)
English (en)
Inventor
Ufuk Basyigit
Wolfgang DÖPPLING
Horst Steinbinder
Alexander Zernickel
Original Assignee
Schaeffler Technologies Gmbh & Co. 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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2010088987A1 publication Critical patent/WO2010088987A1/fr

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/10—Housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/102—Shaft arrangements; Shaft supports, e.g. 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
    • 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 present invention relates to a linear bearing assembly of a telescopic steering spindle guide, in particular a raceway sleeve for a linear bearing assembly of a telescopic steering spindle guide.
  • linear bearing assemblies are used for telescopic steering spindle guides to compensate for axial displacement of the steering linkage.
  • a telescopic steering spindle guide with a linear bearing arrangement which comprises two nested shafts which are slidably movable in a longitudinal direction relative to each other, wherein a torque from one to the other shaft is transferable.
  • Rolling elements are arranged between the two shafts so that the most friction-free sliding movement possible in the longitudinal direction is possible.
  • individual profiles with a thin-walled cross-section are arranged between the rolling elements and the inner shaft, which extend in the longitudinal direction of the linear bearing arrangement and are bent in such a way that they each form a leaf spring and unfold a spring force on the rolling elements in a radial direction.
  • a separate leaf spring is provided in each case for a row of rolling bodies extending in the longitudinal direction.
  • a linear bearing assembly is known, in which between the rolling elements and the shaft or between the housing and the rolling elements partially spring means are provided for the provision of spring forces acting in the radial direction.
  • Document DE 198 17 290 A1 describes a longitudinal roller bearing which consists of an outer sleeve and a thin-walled inner tube arranged in a bore of the outer sleeve and rolling elements arranged in longitudinal grooves between the outer sleeve and the inner tube.
  • the inner tube consists of a star-shaped, circumferentially corrugated tube whose grooves formed by the waves form the raceways for the rolling elements.
  • hardened raceway plates can be inserted in the grooves of the inner tube and / or in grooves of the outer sleeve.
  • linear bearing assemblies can not meet the increased torque requirements in the rule, since they are either game or have high displacement forces when the assembly is subjected to a torque. This can lead to high wear and early failure of the corresponding parts.
  • the prior art linear bearing assemblies include a large number of component parts which result in a high complexity of the assembly and consequently high manufacturing costs.
  • the plurality of components in contact increases a tolerance sensitivity of the entire linear bearing assembly, so that the tolerances must be kept low.
  • linear bearing arrangements according to the prior art have the disadvantage that they have only a very limited load capacity, which results from the fact that the balls do not have a Can support career with a defined osculation in the contact region of the bearing assembly and also can not transmit high torques with simultaneous rolling motion.
  • the invention is therefore based on the object to provide a backlash-free linear bearing assembly with high load capacity, which includes a simple and inexpensive installation and a small number of components while allowing a high torque transmission with simultaneous linear movement or simultaneous Wälzhub.
  • a raceway sleeve for a linear bearing arrangement of a telescopic steering spindle guide for arrangement between a housing and a shaft displaceable relative thereto in a longitudinal direction, the raceway sleeve having a longitudinally extending profile with a thin-walled cross-section and bearing sections of the raceway sleeve for unrolling are provided by rolling elements, wherein the raceway sleeve enclosing enclosing a longitudinally extending receiving space for receiving the shaft.
  • the raceway sleeve can be formed as a longitudinally extending member having any thin-walled cross-section and also extending in the longitudinal direction recess, such as a tubular or cylindrical sleeve or a hollow profile of any cross section, wherein the cross section in the longitudinal direction the raceway sleeve is constant.
  • the raceway sleeve thus has an inner and an outer surface and encloses in its interior a volume which is formed in an installed state of the raceway sleeve at least for receiving the shaft.
  • the raceway sleeve has end faces through which the shaft can extend into the interior of the raceway sleeve.
  • the raceway sleeve can thus at least partially embrace the shaft or even completely enclose it in the installed state.
  • rolling elements and possibly cages between the raceway sleeve and the shaft they are of course also encompassed or enclosed.
  • the raceway sleeve is integrally formed.
  • the raceway sleeve consists of a single component. This can be made either as a component of homogeneous material or of several individual parts which are inextricably linked.
  • the raceway sleeve is formed as a bent sheet metal part. Accordingly, a thin-walled piece of sheet metal can be formed such that the longitudinally extending raceway sleeve is formed with the desired cross-section.
  • the sheet may be bent such that opposite lateral end faces of a sheet metal plate are brought together with simultaneous bending of the sheet metal plate or brought into contact with each other.
  • the raceway sleeve in the longitudinal direction at least partially have at least one slot.
  • the wall of the raceway sleeve can therefore be designed with at least one partially formed slot.
  • the slot extends over the entire length of the raceway sleeve.
  • the raceway sleeve has an open cross-section at least in the region of the slot, the slot being selected to be small in relation to the remaining dimensions of the raceway sleeve can be. If the raceway sleeve, as described above, from a bent sheet metal plate, so for example. When merging the opposite end faces, a gap between the two end faces may be provided so that no completely closed cross-section is formed and the gap defines the slot.
  • the slot allows, for example, a spreading of the raceway sleeve in a mounting of a cage or a shaft in the interior of the raceway sleeve.
  • the load-bearing areas have at least one curvature.
  • the bearing areas may, for example, be formed convex or concave, so that they act as leaf springs and thereby a resilient effect of these bearing areas can be achieved.
  • the raceway sleeve may include a number of apertures between the bearing portions. Accordingly, in the wall of the raceway sleeve between the bearing areas, and thus in the non-wearing areas, recesses or openings are provided which allow a saving of material and weight. Furthermore, a bending process for the production of the raceway sleeve can be facilitated if the apertures are arranged in the regions to be bent. However, it should be noted that sufficient stability and load-bearing capacity of the raceway sleeve are maintained.
  • the raceway sleeve at the end faces of the raceway sleeve can include tabs to limit a cage movement.
  • angled lugs can be provided as stops which limit the range of motion of the cage to the length of the raceway sleeve in an installed state.
  • the cage can be retained in this way by the tabs in the region of the raceway sleeve, so that hereby a captive for the cage is provided.
  • the tabs can also be provided in the region of the end faces by appropriate deformation of the sheet.
  • the raceway sleeve has the shape of an equilateral triangle in cross-section, wherein at least portions of side surfaces are formed as load-bearing sections. Accordingly, the raceway sleeve is designed as a triangular profile, wherein the edges of the raceway sleeve are rounded.
  • the side surfaces of the raceway sleeve can be used here as raceways for the rolling elements.
  • At least the supporting portions may be hardened.
  • tempered material can also be used. This may, for example, have a degree of remuneration of> 380 HV.
  • a linear bearing arrangement for telescopic steering shaft guide is provided with at least one housing, a shaft displaceable relative thereto in a longitudinal direction, rolling elements and a raceway sleeve arranged between the housing and the shaft, wherein the raceway sleeve is designed as described above.
  • raceway sleeve may be disposed on the housing and the rolling elements roll to provide the relative displacement of the shaft with respect to the housing on the one hand on the shaft and on the other hand on the bearing portions of the raceway sleeve.
  • the cage is arranged with the rolling elements in the interior of Laubahnhülse, wherein the raceway sleeve itself immovably with respect to the housing is fixed thereto.
  • the raceway sleeve is disposed on the shaft and the rolling element rollers roll to provide the relative displacement of the shaft with respect to the housing on the one hand to the housing and on the other hand on the supporting portions of the raceway sleeve.
  • the cage with the rolling elements surrounds the raceway sleeve, wherein the raceway sleeve itself is immovably fixed to the shaft.
  • the rolling elements are designed as needles. In this way, a high load capacity of the linear bearing assembly is provided.
  • other forms of rolling elements are possible, such as. Balls, cylinders, cones or other known Wälz stressesigenformen.
  • FIG. 3 shows a frontal front view of a first embodiment of a linear bearing arrangement according to the description
  • FIG. 4 shows a frontal front view of a second embodiment of a linear bearing arrangement according to the description
  • Figure 5 shows a perspective view of the linear bearing assembly according to Figure 4.
  • FIG. 6 shows a further perspective view of the linear bearing arrangement according to FIG. 5. Detailed description of the drawings
  • FIG. 1 shows a raceway sleeve 10 as described in perspective view.
  • the raceway sleeve 10 comprises a longitudinally extending integral profile having a thin-walled cross-section having a substantially triangular cross-sectional shape, wherein the side lengths of the triangle formed have the same length and the corners of the triangular cross-sectional shape are rounded.
  • the described raceway sleeve 10 is made of a thin-walled sheet metal and is formed such that longitudinally extending end faces of the sheet are adjacent to each other or abut such that a narrow in the longitudinal direction of the raceway sleeve 10 extending slot 14 between the two end faces of the sheet is formed.
  • the raceway sleeve 10 thus encloses a receiving space extending in the longitudinal direction for receiving a shaft 32. Openings 12 are provided in a wall of the raceway sleeve 10, which are arranged between adjacent bearing areas 11 of the raceway sleeve 10 and for material and weight reduction of the raceway sleeve 10 are provided.
  • the apertures may be provided according to the illustrated embodiment, in particular in deformed areas of the raceway sleeve 10, so that a forming process of the sheet is facilitated in the desired shape.
  • the apertures 12 are designed such that only in the region of the two ends or end faces A and B of the raceway sleeve 10 is provided in each case a circulating in a circumferential direction band which connects the remaining supporting portions 11 and together with these the apertures 12 surrounds.
  • the illustrated raceway sleeve 10 includes at its end faces A and B inwardly directed, angled lugs 13, which are intended to limit a within the raceway sleeve 10 relative to this movable cage in its range of motion in the longitudinal direction, so that it does not can emerge from the raceway sleeve 10. Is the relative to the raceway sleeve 10 movable cage on an outer side of the raceway sleeve 10th arranged (not shown), the tabs 13 must be directed to the outside.
  • Figure 2 shows a raceway sleeve 10 as described in a side view. This is partially broken and shows a arranged inside the raceway sleeve 10 cage 21 and rolling elements 22, which roll on the supporting portions 11 of the raceway sleeve 10.
  • the range of motion of the cage 21 and the rolling elements 22 arranged therein is limited at the two end faces A and B of the raceway sleeve 10 by means of the inwardly angled tabs 13 in the longitudinal direction of the raceway sleeve 10.
  • Figure 3 shows a frontal front view of a linear bearing assembly 30 having a housing 31 and a relative to the housing 31 in a longitudinal direction perpendicular to the image plane displaceable shaft 32.
  • the raceway sleeve 10 is circumferentially fixed immovably to the housing 31 is and can be braced against the housing 31 for this purpose.
  • the raceway sleeve 10 has the longitudinal slot 14, so that the raceway sleeves 10 are inserted into the housing 31 in a compressed state and force over an expanding restoring force can press against the inner wall of the housing 31 in an installed state.
  • the rolling elements 22 are arranged on the bearing areas 11, which roll on the one hand on the bearing areas 11 and on the other hand on the surface of the shaft 32.
  • the rolling elements 22 are formed in the illustrated embodiment as needles and in which the shaft 32 encompassing cage 21 is arranged.
  • the described shaft 32 has a substantially triangular cross section with equal side lengths, wherein the corners of the cross section and thus the edges of the shaft 32 are rounded. According to this cross section, the shaft encompassing cross sections of the cage 21, the raceway sleeve 10 and the housing 31 are selected.
  • any other cross section of the entire Linear bearing assembly 30 and the respective components are based, such as, for example, a quadrangular or other polygonal cross-section.
  • Figure 4 shows a frontal front view of a linear bearing assembly 40 which is formed substantially in accordance with the embodiment described in Figure 3.
  • the raceway sleeve 10 illustrated in FIG. 4 also has tabs 13 in the region of the front side A and B for limiting the range of motion of the cage 21.
  • FIG. 5 shows a perspective view of the linear bearing arrangement 50 with a shaft 32, a cage 21 and a raceway sleeve 10 in an assembled state.
  • FIG. 6 shows a further perspective view of a linear bearing arrangement 60 according to FIG. 5 with a shaft 32, a cage 21 and a raceway sleeve 10 in an assembled state, wherein the raceway sleeve 10 comprises the longitudinally extending slot 14 and the rolling elements 22 visible in the outward direction Cage 21 between the shaft 32 and the raceway sleeve 10 are arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Ocean & Marine Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

L''invention concerne une gaine de roulement (10) pour un ensemble palier linéaire d'un guide d'arbre de direction à disposer entre un logement (31) et un arbre (32) pouvant coulisser par rapport à celui-ci dans une direction longitudinale, la gaine de roulement (10) présentant un profil s'étendant dans la direction longitudinale et ayant une section transversale à paroi mince et des régions porteuses (11) de la gaine de roulement (10) étant prévues pour le roulement de corps de roulement (22), la gaine de roulement (10) entourant un espace de réception s'étendant dans la direction longitudinale et destiné à recevoir l'arbre (22). L'invention concerne également un ensemble palier linéaire (40) pour le guide d'arbre de direction télescopique comprenant au moins un logement (31), un arbre (32) pouvant coulisser par rapport à celui-ci dans une direction longitudinale, des corps de roulement (22) et une gaine de roulement (10) disposée entre le logement (31) et l'arbre (32), la gaine de roulement (10) étant conçue comme décrit ci-dessus.
PCT/EP2009/066578 2009-02-07 2009-12-08 Ensemble palier linéaire pour un guide de broche de direction télescopique WO2010088987A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009008009A DE102009008009A1 (de) 2009-02-07 2009-02-07 Linearlageranordnung für eine teleskopische Lenkspindelführung
DE102009008009.0 2009-02-07

Publications (1)

Publication Number Publication Date
WO2010088987A1 true WO2010088987A1 (fr) 2010-08-12

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ID=41719095

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PCT/EP2009/066578 WO2010088987A1 (fr) 2009-02-07 2009-12-08 Ensemble palier linéaire pour un guide de broche de direction télescopique

Country Status (3)

Country Link
KR (1) KR20110104091A (fr)
DE (1) DE102009008009A1 (fr)
WO (1) WO2010088987A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11117610B2 (en) 2017-11-23 2021-09-14 Thyssenkrupp Presta Ag Steering column for a motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1346191A (fr) * 1963-02-01 1963-12-13 Schaeffler Ohg Industriewerk Palier à roulement pour mouvements longitudinaux
DE3813422A1 (de) * 1988-04-21 1989-11-02 Lemfoerder Metallwaren Ag Teleskopierbare lenkwelle fuer kraftfahrzeuge
DE4028072A1 (de) * 1990-09-05 1992-03-12 Joachim Heil Kugelfuehrung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461605B (sv) 1987-03-12 1990-03-05 Ffv Autotech Ab Vridmomentoeverfoerande teleskopaxel med oeverbelastningsskydd
DE19817290B4 (de) 1998-04-18 2009-02-12 Skf Linearsysteme Gmbh Längswälzlager
EP1840399B1 (fr) 2004-12-28 2014-06-18 Nsk Ltd. Colonne pliable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1346191A (fr) * 1963-02-01 1963-12-13 Schaeffler Ohg Industriewerk Palier à roulement pour mouvements longitudinaux
DE3813422A1 (de) * 1988-04-21 1989-11-02 Lemfoerder Metallwaren Ag Teleskopierbare lenkwelle fuer kraftfahrzeuge
DE4028072A1 (de) * 1990-09-05 1992-03-12 Joachim Heil Kugelfuehrung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11117610B2 (en) 2017-11-23 2021-09-14 Thyssenkrupp Presta Ag Steering column for a motor vehicle

Also Published As

Publication number Publication date
DE102009008009A1 (de) 2010-08-12
KR20110104091A (ko) 2011-09-21

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