Schaeffler Technologies Ag & Co .kg

Daniel Heise

Marco Hildebrand

Jürgen Weber

Rainer Ottersbach

Bastian Hain

A harmonic drive () comprises three connection elements (), namely an input element (), an output element () and an adjusting element (), and an anti-twist mechanism () operates between the connection elements (), the anti-twist mechanism comprising an anti-twist element (), which is concentric to the connection elements () and interlockingly cooperates with one of the connection elements () and frictionally cooperates with one other connection element ().

Harmonic drive

A strain wave gear, in particular for an electromechanical camshaft adjuster, comprises a housing element, an internally toothed drive element connected thereto in a rotationally fixed manner, an elastic, externally toothed gear element, and an internally toothed output element. The drive element has positive locking elements with which it is connected to the housing element.

Strain wave gear

A harmonic drive including a housing component () and a drive element () which is held on the housing component, can be deformed by a wave generator (), is in the form of a flanged bushing and has a toothing region () having a cylindrical basic shape and a disc section () which adjoins the toothing region (). Adjoining the disc section () there is a bushing section () which is concentric to the toothing region (), overlaps the latter in the axial direction and is held interlockingly between a cylindrical edge section (), which is thick-walled in comparison with the bushing section (), of the housing component () and an intrinsically rigid component () which is likewise solid in comparison with the flanged bushing ().

A harmonic drive comprises a wave generator, a resilient, geared transmission element that can be deformed by the wave generator, a connecting element on the housing side, and a connecting element on the output side. The resilient transmission element has two different tooth systems, a spline tooth system and a running tooth system; the spline tooth system is coupled along the entire circumference to one of the connecting elements for conjoint rotation therewith, and the running tooth system is provided for cooperation with the wave generator and partial engagement in a mating running tooth system on the other connecting element.

A camshaft adjusting system () is provided for a first camshaft () and a second camshaft () which are arranged concentrically with respect to one another, the second camshaft () being arranged within the first camshaft (). A vane-cell type hydraulic camshaft adjuster () is configured for adjusting the first camshaft () and an electric camshaft adjuster () is configured for adjusting the second camshaft (). A front cover () which is fastened to a stator () of the hydraulic camshaft adjuster () and which closes off the camshaft adjuster () at a side facing away from the camshaft has an internal toothing () for supporting a flex pot () which is attached to the second camshaft () and which is designed for receiving torque from the electric camshaft adjuster (). A camshaft adjusting unit having the camshaft adjusting system () and two camshafts () is also provided.

Camshaft adjusting system with flex pot for decoupling of the adjustment ranges

A camshaft adjusting system () is provided for a first camshaft () and a second camshaft () which are arranged concentrically with respect to one another, the second camshaft being arranged inside the first camshaft. A hydraulic camshaft adjuster () of the vane-cell type is set up for the adjustment of the first camshaft, and an electric camshaft adjuster () is set up for the adjustment of the second camshaft. A rotor contact flange () of an output ring () of the electric camshaft adjuster is arranged radially inside a first cover () of the hydraulic adjuster, the output ring which is equipped for the transmission of torque to the second camshaft is arranged at least partially radially and axially inside a rotor () of the hydraulic camshaft adjuster. A camshaft adjusting unit is also provided having a camshaft adjusting system of this type and two camshafts.

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Herzogenaurach, Germany

Daniel Heise