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WO2007017016A1 - Accouplement de l'arbre destine a la transmission de couple - Google Patents

Accouplement de l'arbre destine a la transmission de couple Download PDF

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Publication number
WO2007017016A1
WO2007017016A1 PCT/EP2006/006418 EP2006006418W WO2007017016A1 WO 2007017016 A1 WO2007017016 A1 WO 2007017016A1 EP 2006006418 W EP2006006418 W EP 2006006418W WO 2007017016 A1 WO2007017016 A1 WO 2007017016A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft coupling
rolling elements
coupling according
balls
shaft
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2006/006418
Other languages
German (de)
English (en)
Inventor
Harald Hochmuth
Alexander Zernickel
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler KG filed Critical Schaeffler KG
Publication of WO2007017016A1 publication Critical patent/WO2007017016A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings

Definitions

  • the invention relates to a shaft coupling for torque transmission, which comprises a substantially tubular outer shaft part and an axially displaceable inner shaft part in this.
  • a shaft coupling according to the preamble of claim 1 is known for example from DE 31 24 927 A1.
  • This consisting of an inner part and a surrounding outer sleeve shaft coupling has a plurality of axially extending grooves in which balls roll.
  • To eliminate play in the bore of the outer sleeve one of the number of circumferentially distributed rows of balls corresponding number of plates are arranged, each ball is supported on two adjacent, an obtuse angle enclosing plates and the plates are spring-loaded on the inner wall of the outer sleeve. Thus, all plates press with bias against the balls. The plates inevitably take up radial space in the shaft coupling.
  • the invention has for its object to provide a shaft coupling for torque transmission, which has a particularly compact structure at least almost play-free storage tion of an axially displaceable inner shaft part in an outer shaft part.
  • a shaft coupling for torque transmission with the features of claim 1.
  • This shaft coupling has between an inner and an outer shaft part of the linear bearing serving rolling elements, so that the shaft parts are axially against each other displaced.
  • the inner shaft part and the outer shaft part have a plurality of, in particular three, peripheral regions forming the entire circumference, in each of which at least one rolling element is arranged.
  • the individual peripheral regions can be given for example by an approximately triangular cross-sectional shape of the shaft parts; however, a substantially circular formation of the shaft parts is also possible.
  • each circumferential region extends over 120 ° of the total circumference.
  • At least one of the peripheral regions preferably precisely one circumferential region, has opposite directions, ie one-way clutches acting in opposite directions of rotation.
  • clamping elements of these freewheel clutches balls are provided, which are at the same time rolling elements of the linear bearing between the shaft parts.
  • the at least one circumferential region of the shaft coupling, in which the one-way clutches are arranged thus has at least two rolling elements, wherein each of these rolling elements, namely balls, both acts as a clamping element of an overrunning clutch and as a rolling element of a linear bearing.
  • the freewheel clutches lock each other, so that no rotation of the inner shaft part relative to the outer shaft part is possible.
  • Peripheral regions in which no one-way clutches are arranged have exclusively rolling elements serving for the linear bearing. Although these rolling elements may have an anti-rotation function, but have no free-running function. A freewheeling function of a rolling element is only given if it allows a relative rotation of the shaft parts in one direction of rotation and locks in the other direction by clamping.
  • each ball acting as a clamping element can be spring-loaded separately.
  • a ball row extending in the axial direction of the shafts, guided by a cage it is possible for a ball row extending in the axial direction of the shafts, guided by a cage, to be acted upon in total by the force of a spring.
  • the counteracting freewheel device is loaded by spring force such that a radial force component presses the inner shaft part away from the circumferential region in which the freewheel device is arranged, and thus in other peripheral regions, in particular in the remaining two out of three peripheral regions Pressing shaft part.
  • the inner shaft part is thus free of play and at the same time mounted axially displaceable in the outer shaft part.
  • the overrunning clutches preferably have a clamping angle which is close to the self-locking limit in order to prevent sluggishness in the axial adjustment of the shaft coupling, in particular a setting or a jerky tearing of the ball freewheel device.
  • a plurality of rolling elements are arranged axially one behind the other in a preferred embodiment. In this way, both the transmittable torque between the shaft parts is increased, as well as the inclusion of tilting loads possible.
  • the third peripheral area i. In that peripheral region in which the circumferentially effective, self-locking freewheel device is arranged, there is preferably at least one additional rolling element, which, like the rolling elements in the first and second circumferential region, serves for the linear bearing, but without at the same time having a freewheeling function.
  • This at least one additional rolling element in the third circumferential region is preferably located axially between rolling elements, which are parts of freewheel clutches.
  • the rolling elements of the shaft coupling are balls.
  • the balls in the first and second peripheral region are guided in an advantageous embodiment in longitudinal grooves of the inner shaft part and of the tubular outer shaft part, so that they assume an additional anti-rotation function.
  • the elastic properties of the freewheel device and the remaining ball bearing are matched to one another such that torsional loads between the shaft parts are distributed in a defined manner to the different rolling elements.
  • rolling elements in the first and second peripheral regions i. in those peripheral areas in which there are no one-way clutches, preferably cylindrical rollers or needles provided.
  • the length of a cylindrical roller or needle is preferably at least one half of the minimum radius of the inner shaft part.
  • a cage arranged between the shaft parts can be provided.
  • FIG. 1 shows in cross section a first embodiment of a shaft coupling for transmitting torque
  • Figure 2 shows a second embodiment of a shaft coupling
  • FIG. 3 shows a third embodiment of a shaft coupling. Detailed description of the drawing
  • an embodiment of a shaft coupling 1 for torque transmission is shown in each case, which can be used for example in a steering column of a motor vehicle.
  • an inner shaft part 3 is axially displaceably mounted in an outer shaft part 2. While in the exemplary embodiments according to FIGS. 1 and 2 a triangular wave is provided as the inner shaft part 3, in the exemplary embodiment according to FIG. 3 the inner shaft part 3 has a substantially circular cross section.
  • three circumferential regions U1, U2, U3, which together form the total circumference of the shaft coupling 1, can be distinguished. Each circumferential region U1, U2, U3 extends over 120 °, wherein in the exemplary embodiments according to FIGS. 1 and 2, a respective triangle side of the inner shaft part 3 lies in a peripheral region U1, U2, U3.
  • the first two peripheral regions U1, U2 arranged in the representations below are arranged symmetrically with respect to a vertical plane V, which centrally intersects the third peripheral region U3.
  • Cylindrical rollers 4 (FIGS. 1, 2) and balls 5 (FIG. 3) are provided as rolling elements serving as the linear bearing of the inner shaft part 3 in the outer shaft part 2.
  • rolling bodies 4, 5 are arranged one behind the other in the axial direction of the shaft coupling 1. While the cylindrical rollers 4 - usually referred to as needles in the case of diameters of up to 6 mm - roll on smooth circumferential sections of the shaft parts 2, 3, the balls (FIG.
  • the ball 11 prevents a rotation of the inner shaft member 3 in a clockwise direction with a fixed outer shaft part 2, the ball 12 blocks the one-way clutch 10 in the opposite direction of rotation.
  • the inner shaft part 3 thus held against rotation in the outer shaft part 2.
  • the designated ⁇ clamping angle is dimensioned such that the one-way clutches 9, 10 are operated approximately at the self-locking limit.
  • the inner shaft part 3 is displaced axially relative to the outer shaft part 2, not only the rolling elements 4, 5 in the peripheral regions U1, U2, but also the balls 11, 12 roll in the third circumferential region U3 between the shaft parts 2, 3.
  • the balls 11, 12 thus have in addition to their freewheeling function and a linear bearing function.
  • the only one indicated in FIG Rolling element 14 to a ball, but at this point is also a cylindrical roller or Needle usable. Similar to the balls 5 arranged in the first two circumferential regions U1, U2 (FIG.
  • the ball 14 arranged in the third peripheral region U3 is also guided in longitudinal grooves 6, 7 of the inner shaft part 3 and of the outer shaft part 2.
  • the ball 14 additionally counteracts a rotation of the inner shaft part 3 relative to the outer shaft part 2.
  • pair of oppositely-acting one-way clutches 9, 10 close in the axial direction one behind the other two additional rolling elements 14 at.
  • balls 11, 12 roll on cylinder jacket-shaped surface portions of the outer shaft part 2, while the inner shaft member 3 is formed in the contacted by the balls 11, 12 areas ramped to produce the desired freewheeling function. Notwithstanding this, it is also possible, in the region of the one-way clutches 9, 10 to make the inner shaft part 3 cylindrical, while the outer shaft part 2 has a ramp contour.
  • the designated diameter of the additional rolling elements 14 exceeds the diameter Dn of the balls 11, 12 clearly, in the embodiments of Figures 2 and 3 by more than 50%.
  • the length of the cylindrical rollers or needles 4 is denoted by L 4 , the minimum radius of the inner shaft part 3 by R m in.
  • the length L 4 is at least 50%, in the embodiments of Figure 1 and 2 about 80% of the minimum radius R m j n of the inner shaft part 3.
  • the cylindrical rollers or needles 4 are as well as the balls 5, 11, 12, 14th directly on both shaft parts 2, 3 at.
  • the prestressed mounting of the inner shaft part 3 in the outer shaft part 2 serving spring element 13 does not claim any additional radial space, but uses the existing space between the shaft parts 2, 3 from. This is made possible by the fact that the spring element 13 exerts a force on the balls 11, 12 in the gap space 15 between the shaft parts 2 and 3, mainly in the tangential direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un accouplement d'arbre (1) destiné à la transmission de couple et présentant des parties arbre (2, 3) axialement télescopiques et des corps de roulement (4, 5, 11, 12, 14) placés entre ces parties et destinés au roulement linéaire. La partie arbre interne (3) et la partie arbre externe (2) sont subdivisées en plusieurs zones circonférentielles (U1, U2, U3) formant la circonférence totale. Des accouplements à roue libre (9, 10) agissant en sens inverse, situés dans au moins une zone circonférentielle (U3), présentent, comme corps de serrage, des billes (11, 12) qui servent simultanément au roulement linéaire.
PCT/EP2006/006418 2005-08-09 2006-07-01 Accouplement de l'arbre destine a la transmission de couple Ceased WO2007017016A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005037528.6A DE102005037528B4 (de) 2005-08-09 2005-08-09 Wellenkupplung zur Drehmomentübertragung
DE102005037528.6 2005-08-09

Publications (1)

Publication Number Publication Date
WO2007017016A1 true WO2007017016A1 (fr) 2007-02-15

Family

ID=37547711

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/006418 Ceased WO2007017016A1 (fr) 2005-08-09 2006-07-01 Accouplement de l'arbre destine a la transmission de couple

Country Status (2)

Country Link
DE (1) DE102005037528B4 (fr)
WO (1) WO2007017016A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3088889A1 (fr) 2018-11-23 2020-05-29 Robert Bosch Automotive Steering Vendôme Dispositif d’accouplement entre deux arbres coaxiaux, notamment pour une colonne de direction de véhicule automobile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006058999A1 (de) * 2006-12-14 2008-06-19 Bayerische Motoren Werke Ag Drehmomentübertragungseinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281723A2 (fr) * 1987-03-12 1988-09-14 FFV Autotech Aktiebolag Axe téléscopique de transmission de couple avec protection contre surcharge
DE3813422A1 (de) * 1988-04-21 1989-11-02 Lemfoerder Metallwaren Ag Teleskopierbare lenkwelle fuer kraftfahrzeuge
US6343993B1 (en) * 1999-06-30 2002-02-05 Nacam France S.A. Ball-type system for coupling two sliding shafts
EP1557338A1 (fr) * 2002-10-24 2005-07-27 NSK Ltd. Arbre extensible pour le guidage d'un vehicule
DE60105140T2 (de) * 2001-06-21 2005-09-08 Steelcase S.A. Teleskopische Führungseinrichtung eines inneren Rohres in einer äusseren rohrförmigen Umhüllung
EP1584538A1 (fr) * 2002-12-20 2005-10-12 NSK Ltd. Arbre telescopique pour direction de vehicule automobile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168177B (de) * 1957-04-27 1964-04-16 Andrea Bellomo Winkel- und/oder laengsbewegliches homokinetisches Wellengelenk
DE1085727B (de) * 1957-03-26 1960-07-21 Martin Renker Elastische Wellenkupplung
DE10213117B4 (de) * 2002-03-23 2004-03-11 Amborn, Peter, Dr.-Ing. Wellenkupplung mit hohem Wirkungsgrad
DE10259446A1 (de) * 2002-12-19 2004-07-08 Volkswagen Ag Kugelverschiebeeinheit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281723A2 (fr) * 1987-03-12 1988-09-14 FFV Autotech Aktiebolag Axe téléscopique de transmission de couple avec protection contre surcharge
DE3813422A1 (de) * 1988-04-21 1989-11-02 Lemfoerder Metallwaren Ag Teleskopierbare lenkwelle fuer kraftfahrzeuge
US6343993B1 (en) * 1999-06-30 2002-02-05 Nacam France S.A. Ball-type system for coupling two sliding shafts
DE60105140T2 (de) * 2001-06-21 2005-09-08 Steelcase S.A. Teleskopische Führungseinrichtung eines inneren Rohres in einer äusseren rohrförmigen Umhüllung
EP1557338A1 (fr) * 2002-10-24 2005-07-27 NSK Ltd. Arbre extensible pour le guidage d'un vehicule
EP1584538A1 (fr) * 2002-12-20 2005-10-12 NSK Ltd. Arbre telescopique pour direction de vehicule automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3088889A1 (fr) 2018-11-23 2020-05-29 Robert Bosch Automotive Steering Vendôme Dispositif d’accouplement entre deux arbres coaxiaux, notamment pour une colonne de direction de véhicule automobile
US11644066B2 (en) 2018-11-23 2023-05-09 Robert Bosch Automotive Steering Vendome Sas Coupling device between two coaxial shafts, in particular for a steering column of a motor vehicle

Also Published As

Publication number Publication date
DE102005037528A1 (de) 2007-02-22
DE102005037528B4 (de) 2014-01-09

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