Robert Boschgmbh

Peter Froehlich

Peter Nolting

Wolfgang Scheidel

Christof Bernauer

Hans Kobschaetzky

Thomas Bertolini

Josef Foerstera

Reuben Agnon

Otto Brass

Joerg Brandes

Christoph Eitel

Alfred Maier

An electric motor, including at least two permanent magnet segments disposed around a motor longitudinal axis, in which each permanent magnet segment has end faces extending in the direction of the motor longitudinal axis and is encompassed by two independent yoke ring segments that have a gap between them parallel to a symmetry plane extending through the motor longitudinal axis and the center of the permanent magnet segments in order to reduce the armature transverse field. In addition to the reduction of the armature transverse field, a weight reduction of the electric motor is also achieved. To this end, in a first region close to the end faces of the permanent magnet segments, the one-piece magnetically conductive yoke is provided with a larger cross section than in a second region close to the symmetry plane extending through the center of the permanent magnet segments. The construction is particularly suited for small electric motors, in particular d.c. motors that are excited by permanent magnets.

Electric motor

Retaining device for an electric motor

Growing community of inventors

Buehl, Germany

Peter Froehlich