WO2007115608A1 - Joint homocinétique sans jeu - Google Patents

Joint homocinétique sans jeu Download PDF

Info

Publication number
WO2007115608A1
WO2007115608A1 PCT/EP2007/001757 EP2007001757W WO2007115608A1 WO 2007115608 A1 WO2007115608 A1 WO 2007115608A1 EP 2007001757 W EP2007001757 W EP 2007001757W WO 2007115608 A1 WO2007115608 A1 WO 2007115608A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint part
ball cage
ball
joint
cover
Prior art date
Application number
PCT/EP2007/001757
Other languages
German (de)
English (en)
Inventor
Stephan Maucher
Original Assignee
Gkn Driveline International Gmbh
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 Gkn Driveline International Gmbh filed Critical Gkn Driveline International Gmbh
Publication of WO2007115608A1 publication Critical patent/WO2007115608A1/fr

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
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/2233—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts where the track is made up of two curves with a point of inflexion in between, i.e. S-track joints
    • 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
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22303—Details of ball cages
    • 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
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/2232—Elements arranged in the hollow space between the end of the inner shaft and the outer joint member

Definitions

  • the invention relates to a constant velocity joint comprising an outer joint part with circumferentially distributed longitudinal outer ball tracks, a Gelenki ⁇ nenteil with circumferentially distributed longitudinal inner ball tracks, torque transmitting balls that are seated in pairs of associated outer and inner ball tracks, as well as an annular ball cage seated between the outer joint part and inner joint part and circumferentially distributed cage windows, in which the torque transmitting balls are held in a common plane, wherein the pairs of tracks extend at least in the joint median plane with the joint extended in a coincident axial direction, wherein means are provided for resiliently supporting the ball cage relative to the outer joint part the ball cage act in relation to the outer joint part in the same direction in which expand the pairs of tracks, the ball cage opposite axial play has the outer joint part.
  • Constant velocity joints of the above type are referred to as Rzeppa fixed joints.
  • these joints include UF joints (undercut free) with axially undercut-free ball tracks and AC joints (angular contact) with arcuate ball tracks that are axially offset from each other.
  • other, in particular S-shaped paths are known.
  • Rzeppa joints Common to said Rzeppa joints is the feature that the pairs of tracks of outer and inner ball tracks in the central plane of the channel expand in a coincident axial direction, sometimes using the term 'wedge-shaped'.
  • the present invention seeks to provide a constant velocity universal joint of the aforementioned type, which is structurally simple and is functionally improved.
  • an integrally formed or attached to the outer joint bottom directly abuts the lid and acts on this, wherein the pairs of tracks open at least in the joint center plane towards the ground.
  • the cover is elastically deformed in the installed state.
  • a pin to be coaxially guided and resiliently supported in a base formed or attached to the outer joint part, which bears against the cover and acts thereon, the pairs of tracks opening at least in the joint center plane in the direction of the ground.
  • the pin is supported on a helical compression spring which is inserted in the bottom in a bore.
  • a complementary favorable embodiment which contributes to a shortened design, provides that the cover is formed at least in a central region as a convex shell, in particular as a spherical shell.
  • the cover comprises a central region, which is recessed towards an outer annular region in the direction of the ball cage.
  • the functional area is convex, in order to keep constant the biasing force during joint bending, while the connection of the lid to the ball cage may have a different shape.
  • the cover consists of spring steel sheet.
  • the lid is loaded by the biasing force in the direction of the ball cage, it is possible to produce a pure press-fit connection between the cover and ball cage. However, a cohesive connection is possible in the same way.
  • the lid is connected to the ball cage after insertion of the ball cage in the outer joint part.
  • the ball cage is hereby temporarily rotated with its longitudinal axis in the opposite direction to the functional direction.
  • Figure 1 shows a constant velocity universal joint according to the invention in a first embodiment a) in axial view b) in longitudinal section A-A in the extended position c) in a partial longitudinal section B-B in the extended position;
  • FIG. 2 shows an inventive constant velocity universal joint in a second embodiment a) in axial view b) in longitudinal section AA in the extended position c) in a partial longitudinal section BB in the extended position
  • FIG. 3 shows a constant velocity universal joint according to the invention in a third embodiment a) in an axial view b) in a longitudinal section AA in an extended position c) in a partial longitudinal section BB in an extended position;
  • Figure 4 shows a cover for a ball cage for joints of Figures 1 to 3 a) in axial view b) in a longitudinal section c) in 3D representation.
  • FIGS. 1 to 3 will be described together first. Within the figures, the individual representations are not addressed differently in the description.
  • the figure shows a constant velocity universal joint 11 in so-called monoblock construction, in which a bottom 13 and a shaft journal 14 are integrally formed on an outer joint part 12.
  • the bottom or a lid could also be used as a separate part and welded or bolted to the outer joint part.
  • outer joint part 12 longitudinal circumferentially distributed outer ball tracks 15 are formed, which extend in the longitudinal direction S-shaped.
  • the joint further comprises an inner joint part 17 with an inner opening 18 into which a drive shaft can be inserted.
  • longitudinally distributed inner ball tracks 19 are formed, which extend symmetrically to the joint center plane E in relation to the ball tracks 15 in the longitudinal direction S-shaped.
  • outer ball tracks 15 and inner ball tracks 19 form pairs of tracks and extend thereafter in the joint center plane E in the direction of the opening 16 to the bottom 13 of the outer joint part.
  • pairs of tracks of outer ball tracks 15 and inner ball tracks 19 receive a torque transmitting ball 31.
  • the balls are supported by an annular ball cage 22, which is seated between outer joint part 12 and inner joint part 17, with their Kugelmit- K points held in the joint center plane E and guided in diffraction of the joint to the bisector plane.
  • the balls 31 are in this case received in circumferentially distributed cage windows 23 in the ball cage 22.
  • the ball cage has a spherical outer surface 24, which is designed with play against an inner spherical guide surface 20 of the outer joint part 12.
  • the inner surface 25 of the ball cage 22, however, is substantially free of play against an outer surface 21 of the inner joint part 17.
  • the outer and inner ball tracks are each described by said S-shape, so that the joint is a Rzeppa joint with reverse web opening direction.
  • the inner surface of the bottom could be formed as a concentric spherical surface with a larger diameter relative to the spherical shell-shaped lid, wherein a centrally inserted in the bottom 13 pin or a small limited bulge in the bottom 13 form a mutual contact with axial bias would.
  • the cover is supported even with articulation diffraction constantly with constant biasing force at a contact point in the inner surface 39, which lies on the longitudinal axis L12 of the outer joint part 12, wherein the biasing force is always coaxial to the longitudinal axis L12 of the articulation point even at a bend of the joint around the joint center M.
  • Outer part behaves and is constant over the entire Beuge Kunststoff the constant velocity joint.
  • Figure 2 is attached to the ball cage 22 on the side of the bottom 13 of the outer joint part, ie in the direction in which expand the pairs of paths in the median plane E, a spherical shell-shaped lid 51 2 , which at a constant distance to a concentric spherical inner surface 29th 2 of the bottom 13 is located.
  • a coaxial blind hole 37 is provided into which a helical compression spring 38 and a displaceable pin 36 are inserted. at the pin 36 has a spherical contact surface 39.
  • the lid 51 2 is constantly supported with bias, wherein the biasing force always behaves coaxially to the longitudinal axis L12 of the outer joint part and at articulation of the joint around the joint center M and is constant over the entire flexion region of the constant velocity joint.
  • the lid 51 3 has a central portion 52 3 , which is externally spherical, but recessed is opposite to a likewise mecanickugeligen outer ring portion 53 3 , which is directly connected to the ball cage 22.
  • pin 14 is a coaxial blind hole
  • the pin 38 has a spherical contact surface 39.
  • the lid 51 is constantly supported with bias, wherein the biasing force always behaves coaxially to the longitudinal axis L12 of the outer joint part even at angling of the joint about the joint center point M.
  • the pin 36 acts on the central region 52 of the cover 51 3 over the entire Gelenkbeuge Scheme with the same biasing force.
  • the ball cage 22 moves the ball cage 22 and thus the inner joint part 17 to the opening 16 of the outer joint part 12 back.
  • the balls 31 are based in this case in the cage windows 23 also from the opening down, whereby the balls 31 are pressed into the expanding to the ground rail pairs.
  • the ball cage 22 is supported with its spherical inner surface 25 on the spherical outer surface 21 of the inner joint part 17 axially.
  • the spherical outer surface 24 of the ball cage 22 remains with play against the innenkugeligen inner surface 20 of the outer joint part 12. In this way, the joint is free of play.
  • FIG. 4 will be described together below. It is the spherical shell-shaped lid 51 shown in Figure 2, which has from the outer edge 55 outgoing radial slots 54 to produce axial spring property.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

L'invention concerne un joint homocinétique (11) comportant une partie extérieure (12) présentant des couronnes d'orientation à billes extérieures (15) réparties sur la périphérie, une partie intérieure (17) présentant des couronnes d'orientation à billes intérieures (19) réparties sur la périphérie, des billes de transmission de moment de rotation (31) logées dans des paires de couronnes composées de couronnes d'orientation à billes extérieures et intérieures (15, 19) mutuellement affectées, et une cage à billes annulaire (22) logée entre la partie extérieure (12) et la partie intérieure (17), présentant des fenêtres de cage (23) réparties sur la périphérie, dans lesquelles les billes de transmission de moment de rotation (31) sont maintenues dans un plan commun. Les paires de couronnes s'étendent, au moins dans le plan central de joint, dans une direction axiale commune. Des éléments d'appui élastique de la cage à billes (22) par rapport à la partie extérieure (12) sont prévus, lesdits éléments agissant sur la cage à billes (22), par rapport à la partie extérieure (12), dans la direction opposée à la direction d'extension des paires de couronnes, la cage à billes (22) présentant un jeu axial par rapport à la partie extérieure (12). Dans la direction d'extension des paires de couronnes dans le plan central de joint, un couvercle (51) au moins partiellement convexe à l'extérieur, est appliqué sur la cage à billes (22), des composants connectés à la partie extérieure (12) ou s'appuyant sur celle-ci, agissant avec une force de précontrainte, par l'extérieur, sur ledit couvercle.
PCT/EP2007/001757 2006-04-07 2007-03-01 Joint homocinétique sans jeu WO2007115608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610016842 DE102006016842A1 (de) 2006-04-07 2006-04-07 Spielfreies Gleichlaufdrehgelenk
DE102006016842.9 2006-04-07

Publications (1)

Publication Number Publication Date
WO2007115608A1 true WO2007115608A1 (fr) 2007-10-18

Family

ID=38051375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/001757 WO2007115608A1 (fr) 2006-04-07 2007-03-01 Joint homocinétique sans jeu

Country Status (2)

Country Link
DE (1) DE102006016842A1 (fr)
WO (1) WO2007115608A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8403765B2 (en) * 2008-01-29 2013-03-26 Gkn Driveline International Gmbh Clearance-free constant velocity universal joint

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182455A (en) * 1937-10-28 1939-12-05 William F Smith Flexible coupling
DE2522670B1 (de) * 1975-05-22 1976-05-06 Loehr & Bromkamp Gmbh Hinterschnittfreies Gleichlaufdrehgelenk
DE19653573A1 (de) 1995-12-26 1997-07-03 Ntn Toyo Bearing Co Ltd Kugelgelenkverbindung mit konstanter Geschwindigkeit
US5823883A (en) * 1996-11-04 1998-10-20 Ford Motor Company Constant velocity joint with reactive cage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182455A (en) * 1937-10-28 1939-12-05 William F Smith Flexible coupling
DE2522670B1 (de) * 1975-05-22 1976-05-06 Loehr & Bromkamp Gmbh Hinterschnittfreies Gleichlaufdrehgelenk
DE19653573A1 (de) 1995-12-26 1997-07-03 Ntn Toyo Bearing Co Ltd Kugelgelenkverbindung mit konstanter Geschwindigkeit
US5823883A (en) * 1996-11-04 1998-10-20 Ford Motor Company Constant velocity joint with reactive cage

Also Published As

Publication number Publication date
DE102006016842A1 (de) 2007-10-18

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