Schaeffler Technologies Ag & Co .kg

Ina Schaeffler Kg

Bernhard Wiesneth

Harald Hochmuth

Sigurd Wilhelm

Alexander Zernickel

Dieter Adler

Nicky Heinrich

Stefanie Oeder

A ball screw () having a threaded nut () arranged on the threaded shaft () and a ball channel () wound about the longitudinal axis of the threaded shaft (), and in which the balls () and at least one helical spring () are received. This helical spring () is supported on a molded part () which is inserted into a recess () of the threaded nut () and closes the recess ().

Ball screw

A device for damping rotary oscillations in a drive train with a freewheel clutch () located between a pulley () and a rotor hub () is provided. The hub () is connected to an input shaft of an auxiliary unit, and the pulley () is connected to a crankshaft via a traction means, and the freewheel clutch () has an inner ring (), which surrounds the hub () while being fixed thereto, and includes an outer ring (), which surrounds the inner ring () with radial play and which is fixed to the pulley (). At least one locking element () that is actuated by centrifugal force is provided in the inner ring (), and at least one locking receptacle () is provided in the outer ring ().

Device for damping rotary oscillations

In a device for damping rotary oscillations in a traction mechanism drive for auxiliary units of an internal combustion engine, having an overrunning clutch (), which is arranged between a pulley () and a hub (), according to the invention a locking device () is located between the pulley () and the hub (), axially behind the overrunning clutch (). This locking device includes an inner ring (), which surrounds and is secured to the hub (), and outer ring (), which surrounds the inner ring () with a radial clearance and is secured to the pulley (), and a plurality of retaining balls () which, together with compression springs (), are arranged in radial bores () in the outer ring ().

Device for auxiliary units of an internal combustion engine

Growing community of inventors

Erlangen, Germany

Bernhard Wiesneth