Gkn Driveline International Gmbh

Gkn Automotive Gmbh

Orkan Eryilmaz

Thomas Weckerling

Wolfgang Hildebrandt

Wolfgang Beigang

Ulrich Brochheuser

An inner joint part of a tripod constant velocity joint comprises a hub having an axis of rotation. Three projections extend radially outwardly. There is an adjoining transition region and a bearing region. A spherical circumferential surface of each projection forms a first surface line extending in a first plane. A resulting inner sphere contacts opposite points of the first surface line extending at least in first angle ranges adjacent to a respective point outside the inner sphere. A second surface line in a second plane touches the inner sphere at touch points only at the height of the largest diameter of the projection and extends at least in second angle ranges adjacent to the respective touch point within the inner sphere. A roller element has a convex inner circumferential surface, an extension line forming a radius having a maximum magnitude in a central region, less in an adjacent region.

Inner joint part and roller element of a tripod constant velocity joint

A joint in the form of a counter track joint is disclosed that comprises a joint outer part with first outer ball tracks and second outer ball tracks; a joint inner part with first inner ball tracks and second inner ball tracks; wherein first aperture angles are respectively formed between tangents to contact points of a ball with the first outer ball track and with the first inner ball track, and second aperture angles are respectively formed between tangents to contact points between a ball with the second outer ball track and with the second inner ball track. The first aperture angles of the first track pairs open towards a first side of the joint, and the second aperture angles of the second track pairs open towards a second side of the joint. Outer axial play is provided between the joint outer part and the ball cage. Inner axial play is provided between the ball cage and the joint inner part. Axial play permits relative axial displacement of the joint inner part with respect to the joint outer part.

Counter track joint with axial displacement range

A constant velocity universal ball jointhaving first and second outer ball tracks, and first and second inner ball tracks, forming first pairs of trackswhich widen in a first axial direction. Ri(&#x3b1;), and forming second pairs of trackswhich widen in a second axial direction Ri(&#x3b2;). Ballsare guided in the pairs of tracks and have centers Z positioned on a pitch circle radius PCR around a joint centre M. A ball cageholds the ballsin a common central plane E on to the angle-bisecting plane when the joint is articulated. There is provided an axial clearance permitting a relative axial displacement S wherein, when in the aligned condition, the ratio between the axial clearance S and the pitch circle radius PCR ranges between 0.01 and 0.09 (0.01&#x3c;S/PCR&#x3c;0.09).

Driveshaft comprising a counter track joint featuring a delimited axial displacement path

A constant velocity universal ball jointhaving first and second outer ball tracksand first and second inner ball tracksforming first pairs of trackswhich widen in a first axial direction Ri(&#x3b1;), and forming second pairs of trackswhich widen in a second axial direction Ri(&#x3b2;). Ballsare guided in the pairs of tracks and have centers Z positioned on a pitch circle radius PCR around a joint centre M. A ball cageholds the ballsin a common central plane E on to the angle-bisecting plane when the joint is articulated. There is provided an axial clearance permitting a relative axial displacement S wherein, when in the aligned condition, the ratio between the axial clearance S and the pitch circle radius PCR ranges between 0.01 and 0.09 (0.01&#x3c;S/PCR&#x3c;0.09).

A constant velocity fixed ball joint () having a longitudinal axis (A), an outer joint part () with an annular member () and a joint base (), an inner joint part () which is axially supported on the joint base (), and a cage () for receiving the balls () and holding the balls () in a common plane. The cage () is held in both directions on an inner face in the outer joint part (). The inner joint part (), in a first direction, is unsupported relative to the cage (). In a second axial direction towards the joint aperture (), the inner joint part () is indirectly supported via the cage () on the outer joint part (). The cross-section of the inner joint part () is smaller than the base aperture in the annular member () for the joint base ().

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Lohmar, Germany

Orkan Eryilmaz