Drive unit for a drum motor, drum motor, rear flange and production method

A drum motor comprising:

• a drum tube having a cavity configured therein and a longitudinal axis X;
• and
• an electric drive unit disposed in the cavity of the drum tube, the electric drive unit comprising:
• an electric drive device having a stator and a rotor, said stator and said rotor being disposed in a stator housing which extends along the longitudinal axis X;
• a cable, wherein a first portion of the cable is connected to the electric drive device;
• and
• a liquid encapsulation disposed on a second portion of the cable that has individual lines which are litz wires;
• wherein a rear flange is disposed on one end of the stator housing, the rear flange comprising:
• an annular space disposed on an end side thereof that in the operating state faces away from an interior of the stator housing and which is disposed and configured for receiving the liquid encapsulation of the cable that is connected to the electric drive device, and
• wherein the first portion of the cable is connected to the electric drive device, and the liquid encapsulation is disposed on the second portion of the cable that has individual lines which are litz wires and the liquid encapsulation is disposed in the annular space;
• and
• wherein the end regions of the first and second portion of the cable that adjoin the liquid encapsulation are disposed in the annular space.

A method for producing an electric drive unit for a drum motor, the method comprising the steps of:

• providing an electric drive device having a stator and a rotor, said stator and said rotor being disposed in a stator housing which extends along a longitudinal axis, wherein a rear flange at an end side that faces away from an interior of the stator housing has an annular space disposed on one end of the stator housing;
• connecting a first portion of a cable to the electric drive device, wherein a liquid encapsulation is disposed on a second portion of the cable which has the individual lines which are litz wires;
• and
• disposing the liquid encapsulation in the annular space;
• and
• disposing the end regions of the first and second portions of the cable that adjoin the liquid encapsulation in the annular space.