Gear mechanism part for a cable-controlled window lifter and drive unit for a cable-controlled window lifter

A drive unit for a cable-controlled window lifter, the drive unit comprising:

• a drive motor;
• a control unit;
• and
• a gear mechanism part comprising:
• a gear wheel;
• a cable drum drivable by the gear wheel, the gear wheel and the cable drum being disposed on a common axis, the gear wheel and the cable drum being coupled by a mating fit between an outer gearing disposed on an inner circumferential projection and an inner gearing disposed on an outer circumferential projection;
• and
• a fitting chamber for attaching cable ends, said ends being configured to be introduced into the cable drum, the fitting chamber being provided within the outer circumferential projection on a cross-sectional plane projected perpendicular to the axis
• wherein the drive motor, the control unit and the gear mechanism part are mounted on a common housing, and
• wherein the outer circumferential projection on the corresponding component is configured to additionally engage with an annular channel.