WO2003098065A1 - Verstellbare rolleneinheit für ein gelenkinnenteil eines tripode-gleichlaufdrehgelenkes - Google Patents
Verstellbare rolleneinheit für ein gelenkinnenteil eines tripode-gleichlaufdrehgelenkes Download PDFInfo
- Publication number
- WO2003098065A1 WO2003098065A1 PCT/EP2003/005013 EP0305013W WO03098065A1 WO 2003098065 A1 WO2003098065 A1 WO 2003098065A1 EP 0305013 W EP0305013 W EP 0305013W WO 03098065 A1 WO03098065 A1 WO 03098065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- roller unit
- adjustable roller
- unit according
- joint part
- Prior art date
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
- F16D3/202—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 one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—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 one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—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 one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints
Definitions
- the invention relates to an adjustable roller unit for an inner joint part of a tripod constant velocity joint, in which the inner joint part has, at its end projecting into an outer joint part, radially outwardly directed bearing journals, on each of which a roller is pivotably mounted and rotatable about its longitudinal axis.
- Drive PTO shafts are known to be arranged between the differential gear and the drive wheels of a motor vehicle in order to transmit the torque generated by the vehicle engine to the drive wheels of the vehicle.
- drive cardan shafts are equipped at least at one of their ends with a drive joint which, even with comparatively large flexion angles between the longitudinal axis of the wheel hub and the longitudinal axis of the drive shaft, produces a uniform drive rotary movement on the vehicle wheels.
- Such a drive joint consists of a hollow cylindrical outer joint part with roller raceways on its inner surface, into which a joint protrudes inside with radially outwardly oriented journal. Rollers are attached to the bearing journals, which are usually mounted on the bearing journal surface via rolling elements and roll in the raceways of the outer joint part during flexion movements between the inner joint part and the outer joint part.
- tripod joints are able to compensate for the differences in length between the wheel-side end of the drive joint shaft and the wheel hub due to the aforementioned flexion angles, their noise behavior is unsatisfactory, especially at large flexion angles, and is only acceptable for vehicles with low drive power and low demands on drive noise behavior.
- AAR joints Adjustet Roller
- AAR joints An AAR joint
- This AAR joint 1 has a hollow cylindrical outer joint part 3 fastened to an axle shaft 2, in the inner lateral surface of which raceways 4 for rollers 6 are formed.
- An axle shaft 11 protrudes into said outer joint part 3, which generally has three radially projecting pins 5 with a spherical surface 10 on each of its joint-side ends, on each of which one of these rollers 6 is mounted.
- the rollers 6 can move in a flexion movement between the inner joint part 1 and the outer joint part 3 in the direction of arrow 27 in the raceways 4 of the outer joint part 3.
- the roller 6 is supported with its inner ring surface on rolling elements 7, which in turn are held in position by a bearing ring 8.
- the bearing ring 8 is also pivotally supported with its inner circumferential surface on the spherical head-shaped end of the bearing journal 5 such that the roller unit consisting of roller 6, rolling elements 7 and bearing ring 8 can also roll in raceway 4 largely without sliding friction even with comparatively large flexion angles.
- a disadvantage of this construction is that such spherical bearing journals are comparatively expensive and that the bearing surface available between the bearing ring 8 and the bearing journal 5 in the case of extreme bending angles can be disadvantageously small.
- the object of the invention is to present a technically further developed inner joint part for a tripod joint, in which the deflection-dependent adjustment of the rollers does not take place between a spherical bearing journal and a bearing ring arranged pivotably thereon.
- the cylindrical bearing journals formed on the inner joint part and pointing radially outward each carry a roller which can be displaced in roller raceways on the inside of a hollow cylindrical outer joint part known per se.
- the rollers are each received by a bearing, which on the one hand enable the rollers to rotate on the bearing journal with little friction, but on the other hand also allow the rollers to be pivoted or tilted with respect to these bearings can be.
- the bearings on the respective bearing journal can be displaced coaxially to the longitudinal axis of the bearing journal.
- Such an adjustable roller unit is preferably designed such that the rollers are rotatably mounted on rolling elements and can be pivoted relative to the respective bearing journal about an axis which is oriented perpendicular to the longitudinal axis of the bearing journal and to the surface normal of the bearing journal outer surface.
- the rollers on their inner circumferential surface and / or the rolling elements have a circular or barrel-shaped cross-sectional geometry, so that optimal contact between the surface of the rolling elements and the inside of the roller is maintained when this roller is pivoted.
- the rolling elements preferably roll on a correspondingly shaped outer raceway on an inner bearing ring which sits on the bearing journal with its inner lateral surface.
- the bearing inner ring can be moved together with the rolling elements and the roller in the function of a linear slide bearing coaxially to the longitudinal axis of the bearing journal on its outer surface.
- rolling elements are arranged between the inner circumferential surface of the inner ring and the circumferential surface of the bearing journal to form a linear roller bearing, with which the roller unit can be displaced coaxially to the longitudinal axis of the bearing journal in a particularly low-friction manner.
- stops are arranged on the lateral surface of the bearing journal on the right and left sides of the adjustable roller unit, which limit the displacement path of the roller unit on this journal.
- the stops consist of stop rings which are detachably attached to the bearing journal for the assembly or disassembly of the roller unit.
- FIG. 1 shows a schematic cross section through a bearing journal for a roller of a tripod joint with a linear slide bearing at a flexion angle of zero degrees
- Figure 2 is an illustration as in Figure 1, but for a large
- FIG. 3 shows a schematic cross section through a bearing journal for a roller of a tripod joint with a linear roller bearing at a flexion angle of zero degrees
- Figure 4 is an illustration as in Figure 3, but for a large one
- Figure 5 shows a cross section through an AAR joint according to the
- FIG. 1 shows a schematic cross section through an adjustable roller unit according to the invention for a tripod constant velocity joint, which consists of a roller 12, rolling elements 13 and an inner ring 14.
- This roller unit is fitted with the inner ring 14 on a cylindrical bearing journal 24 of an inner joint shaft (not shown further here) and can be displaced coaxially on the bearing journal 24 in the sense of a plain bearing.
- This inner ring 14 also has a rolling element raceway 25 on its outer circumference, in which the rolling elements 13 can roll.
- the rolling elements 13 are preferably barrel-shaped, so that their rolling surfaces have an approximately circular cross-sectional geometry.
- the roller 12 is arranged radially above the rolling elements 13, the inner circumferential surface 32 of which, in cross section, likewise has an arcuate geometry with a radius 15 related to a pivot axis 35 of the roller 13. It is preferably provided that the cross-sectional geometry of the rolling surface of the rolling bodies 13 also has such a radius 15.
- This roller unit comprising the raceway roller 12, the rolling element 13 and the inner ring 14 are aligned with respect to one another such that in the case in which the driving and the driven shaft of the tripod constant velocity joint do not have a bending angle to one another, the center line 16 of the rolling element 13 and the inner ring 14 and the center 18 of the roller 12 are aligned one above the other (see Figure 1).
- a pivoting of the driven shaft to the driving shaft of the tripod joint results in the inner joint part and the outer joint part being bent toward one another.
- the roller 12 arranged there is pivotably mounted on the rolling elements 13 by a pivoting angle 17.
- the pivoting movement of the roller 13 takes place about a pivot axis 35 which is perpendicular to the longitudinal axis 34 of the journal 24 and perpendicular to the surface normal 33 on the journal surface 21.
- the inner ring 14 Simultaneously with the pivoting of the roller 12 by the pivot angle 17, the inner ring 14, together with the rolling elements 13 mounted thereon, moves in the sense of a sliding bearing on the lateral surface 21 of the journal 24 coaxially with its longitudinal axis 34.
- the displacement path 20 of the inner ring 14 on the Bearing journal surface 21 depends, inter alia, on the size of the pivot angle 17 from.
- the inner ring 14 has been displaced by a distance 20 when the center line 19 of the pivoted roller 12 assumes the position shown there.
- stops 28 to 31 can be arranged on the journal surface 21, which are designed, for example, as stop rings 28, 29 or 30, 31. These stop rings 28, 29; 30, 31 are positioned on the right and left sides of the roller unit 12, 13, 14, 22 and, in a special embodiment of the invention, engage in annular grooves in the pin jacket surface 21, which are not shown here.
- the stop rings 28, 29; 30, 31 are preferably releasably attached to the journal 24 for assembly and disassembly purposes.
- the new roller unit 12, 13, 14, 22 for constant-velocity tripod joints is characterized above all by the fact that with otherwise comparable dimensions (for example the bearing journal 24), significantly larger flexion angles can be achieved. This is made possible above all by the fact that the angular adjustment of the rollers 12 does not take place on a spherical bearing journal, but rather in the rolling element raceways of the outer joint part.
- the roller 12 has on its inner jacket surface a roller bearing raceway 32 which is spherical to the axis of rotation and in which the correspondingly designed roller bodies 13 roll with little friction, which overall enables easy and low-friction angle compensation.
- the inner ring 14 of the roller unit is designed as a linear bearing. This can be both a sliding and a rolling bearing and can be adapted to the vibration requirements of the respective vehicle type.
- Inner ring (axially displaceable)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003232766A AU2003232766A1 (en) | 2002-05-17 | 2003-05-14 | Adjustable roller unit for an internal joint part of a tripod constant-velocity swivel joint |
JP2004505558A JP2005526216A (ja) | 2002-05-17 | 2003-05-14 | トリポード形等速回り継手の継手内部のための調節可能なローラユニット |
EP03752739A EP1506351A1 (de) | 2002-05-17 | 2003-05-14 | Verstellbare rolleneinheit für ein gelenkinnenteil eines tripode-gleichlaufdrehgelenkes |
US10/990,096 US20050064943A1 (en) | 2002-05-17 | 2004-11-16 | Adjustable roller unit for an internal joint part of a tripod constant-velocity swivel joint |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221978A DE10221978A1 (de) | 2002-05-17 | 2002-05-17 | Verstellbare Rolleneinheit für ein Gelenkinnenteil eines Tripode-Gleichlaufdrehgelenkes |
DE10221978.8 | 2002-05-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/990,096 Continuation US20050064943A1 (en) | 2002-05-17 | 2004-11-16 | Adjustable roller unit for an internal joint part of a tripod constant-velocity swivel joint |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003098065A1 true WO2003098065A1 (de) | 2003-11-27 |
Family
ID=29432139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/005013 WO2003098065A1 (de) | 2002-05-17 | 2003-05-14 | Verstellbare rolleneinheit für ein gelenkinnenteil eines tripode-gleichlaufdrehgelenkes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050064943A1 (de) |
EP (1) | EP1506351A1 (de) |
JP (1) | JP2005526216A (de) |
AU (1) | AU2003232766A1 (de) |
DE (1) | DE10221978A1 (de) |
WO (1) | WO2003098065A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4405202B2 (ja) * | 2002-12-10 | 2010-01-27 | 昭和シェル石油株式会社 | ウレアグリース組成物 |
US20110042530A1 (en) * | 2009-08-19 | 2011-02-24 | Mark Phillips | Flexipod with flexible bendable legs with a gripping surface |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4589856A (en) * | 1985-02-28 | 1986-05-20 | The Zeller Corporation | Tripot universal joint of the end motion type |
DE3814606A1 (de) | 1988-04-29 | 1989-11-09 | Interpane Entw & Beratungsges | Verfahren und vorrichtung zur erfassung von strukturen einer oberflaeche eines flaechigen guts |
JPH05321942A (ja) * | 1992-05-25 | 1993-12-07 | Ntn Corp | スライド式等速自在継手 |
DE4445609A1 (de) * | 1994-12-21 | 1996-06-27 | Loehr & Bromkamp Gmbh | Tripodegelenk |
US20010049308A1 (en) * | 1997-12-22 | 2001-12-06 | Robert W. Sams | Tripod bearing assembly |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490251A (en) * | 1968-09-18 | 1970-01-20 | Gen Motors Corp | Pot type universal joint |
US5213546A (en) * | 1991-10-15 | 1993-05-25 | Gkn Automotive, Inc. | Anti-shudder tripod constant velocity joint |
-
2002
- 2002-05-17 DE DE10221978A patent/DE10221978A1/de not_active Withdrawn
-
2003
- 2003-05-14 WO PCT/EP2003/005013 patent/WO2003098065A1/de not_active Application Discontinuation
- 2003-05-14 JP JP2004505558A patent/JP2005526216A/ja active Pending
- 2003-05-14 AU AU2003232766A patent/AU2003232766A1/en not_active Abandoned
- 2003-05-14 EP EP03752739A patent/EP1506351A1/de not_active Withdrawn
-
2004
- 2004-11-16 US US10/990,096 patent/US20050064943A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4589856A (en) * | 1985-02-28 | 1986-05-20 | The Zeller Corporation | Tripot universal joint of the end motion type |
DE3814606A1 (de) | 1988-04-29 | 1989-11-09 | Interpane Entw & Beratungsges | Verfahren und vorrichtung zur erfassung von strukturen einer oberflaeche eines flaechigen guts |
JPH05321942A (ja) * | 1992-05-25 | 1993-12-07 | Ntn Corp | スライド式等速自在継手 |
DE4445609A1 (de) * | 1994-12-21 | 1996-06-27 | Loehr & Bromkamp Gmbh | Tripodegelenk |
US20010049308A1 (en) * | 1997-12-22 | 2001-12-06 | Robert W. Sams | Tripod bearing assembly |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 0181, no. 43 (M - 1574) 9 March 1994 (1994-03-09) * |
Also Published As
Publication number | Publication date |
---|---|
EP1506351A1 (de) | 2005-02-16 |
US20050064943A1 (en) | 2005-03-24 |
JP2005526216A (ja) | 2005-09-02 |
DE10221978A1 (de) | 2003-12-24 |
AU2003232766A1 (en) | 2003-12-02 |
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