Gkn Automotive Ag

Lohr & Bromkamp Gmbh

Dieter Jost

Werner Krude

Jorg Bensinger

Peter Harz

Norbert Hofmann

Michael Ricks

Winfried Busch

Ing E Stall

Krude Werner

Friedholm John

An outer joint part consists of a casing in which the axially extending guiding tracks are fitted in the form of inserts. The casing is provided with axially extending continuous recesses which are open towards the inserts. The unique process for manufacturing the outer joint part consists of positioning the inserts within the recesses and holding them in position by welding or by utilizing a pressing operation on the exterior of the casing while simultaneously positioning the inserts using a supporting core.

Outer joint part for a constant velocity universal joint having inserts

A constant velocity universal joint of the tripode type increases the torque transmitting capacity of the joint while the size of the joint remains unchanged, and, respectively, with a predetermined torque capacity, to reduce the size of the joint, especially the outer diameter of the joint. This is achieved in that the joint is guided entirely by the outer roller and that the securing means for the roller assembly on the tripode arm are displaced radially inwardly with reference to the joint axis.

Constant velocity universal joint of the tripode type

A constant velocity universal joint of the tripod type having an outer joint part provided with three circumferentially distributed, axially extending longitudinal recesses with circumferentially distributed opposed running faces, an inner joint part provided with three circumferentially distributed radial journals engaging the longitudinal recesses, with the journals being provided with roller members which are held substantially isogonally in the longitudinal recesses and which are held relative to the journals so as to be radially displaceable and angularly movable, with each roller member being rotatably supported on a roller carrier and with the journals, at their ends, each having pivot heads which are firmly connected thereto and which engage a radial cylindrical inner recess of a roller carrier so as to be radially movable and angularly movable at right angles thereto around two axes.

Constant velocity universal joint having an inner joint part with

A tripod joint has an outer joint part with three circumferentially distributed, axis-parallel recesses forming circumferentially distributed opposed tracks. An inner joint part has a star-shaped cross-section and three circumferentially distributed arms engaging the recesses in the outer joint part. The arms support roller assemblies. When torque is transmitted with the joint in an extended position, the resultant K.sub.1 of the forces acting from the inner joint part directly on a roller forms a shorter perpendicular distance from the joint axis than the resultant K.sub.2 of the counter forces acting from the outer joint part on the roller, so that, when torque is introduced into the joint, at any angle of articulation of the operating range, the roller is subject to a tilting moment.

Tripod joint

A tripod joint has an outer joint part with an annular housing (1) and roller track elements forming roller tracks, and an inner joint part with a tripod member (6) including rollers (5). The rollers (5) are guided on roller tracks (4) in the roller track elements (2). The roller track elements (2) include longitudinal edges (3) facing an inner face (10) of the tripod housing (1). At the end faces of their longitudinal edges (3), the roller track elements (2) are non-releasably connected to the annular housing (1). The substantially cylindrical tripod housing (1), at one end face, has a housing aperture whereas at the opposite end, it is connected to a shaft journal.

A tripod joint has an outer joint part (1, 41, 61) with three circumferentially distributed longitudinal recesses (2, 42, 62) each forming circumferentially opposed tracks (4, 5; 45, 65). An inner joint part (7, 47, 67) with tripod arms (9, 49, 69) which extend into the longitudinal recess (2, 42, 62) is positioned within the outer joint part (1, 41, 61). Rolling members (10, 50, 70) in rolling contact with the tracks (4, 5; 45, 65) are supported and movably and pivotably held on the tripod arms (9, 49, 69). The longitudinal recesses (2, 42, 62) include guiding means (18, 19) holding the rolling members (10, 50, 70) in the longitudinal recesses (2, 42, 62) so as to be axis-parallel with the joint. The rolling member (10, 50, 70) are in contact with one of the tracks (4, 5,; 45; 65). In each case, there is provided a first contact point (C) for accommodating a circumferentially extending transmission force F.sub.R in the region of a central roller plane (E) and at least one second contact point (A) for accommodating an inwardly directed guiding force F.sub.F in the region of a radially inner supporting shoulder (19).

Roller and track configuration for a tripod joint

A tripod joint has an outer joint part (1) with three uniformly circumferentially distributed axis-parallel recesses (2) forming circumferentially opposed tracks (4, 5), and an inner joint part (6) having a tripod-shaped cross-section with three circumferentially distributed arms (7) which extend into the recesses (2) of the outer joint part (1). Roller assemblies (8) are supported on the arms 7. Each roller assembly has at least one inner ring (12) and one outer roller (9) supported by the arms (7). The roller surface of the outer roller (9) rolls directly on the track (4, 5), with surfaces in each case being paired, such surface pairing enabling at least one radial sliding movement of at least part of a roller assembly (8) relative to the associated arm (7). A space (16) is formed between the roller assemblies (8) and the arms (7) for storing a first lubricant for the surface pairs enabling the radial sliding movement. The remaining joint interior or cavity (3) is filled with a second lubricant.

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Troisdorf, Germany

Dieter Jost