Robert Boschgmbh

Ursula Stucke

Jerome Thiery

Uwe Velte

Benoit Monzie

Andrew Pierson

Benjamin Heyne

Joost Nowak

Oliver Himmel

Ingo Buchholz

Alexis Spinner

The present invention relates to a wet-operated armature of an electric machine, in particular of an electric motor for a fuel pump, said armature comprising a main body and a commutator, wherein the armature is surrounded by a sleeve which fully encloses the main part and the commutator in a circumferential direction. The present invention further relates to the armature sleeve, to an electric machine comprising the armature and to a fuel pump comprising the electric machine. The present invention further relates to a method for producing the armature.

Wet-operated armature

The invention relates to a laminated core, preferably a stator laminated core or a rotor laminated core (), of an electric machine, in particular an electric fuel pump of a motor vehicle. The laminated core comprises slots (), each of which has a slot insulation (), and winding wires of at least one electric winding (), said wires running in the slots (). A plastic encapsulation () encases the laminated core together with the winding wires which run in the slots () at least in some regions. The plastic encapsulation () and the slot insulation () each consist of a thermoplastic, and the plastic of the slot insulation () has a melting point which is equal to, similar to, or lower than the melting point of the plastic of the plastic encapsulation () such that the encapsulation process causes the slot insulation () to melt, thereby bonding the slot insulation () to the plastic encapsulation (). The invention further relates to a method for producing a laminated core and to an electric machine.

Laminated core

Growing community of inventors

Sinzheim, Germany

Ursula Stucke