a drum brake module for motor vehicles operable by electric motor and performs at least one parking brake function , having an electromechanical actuator mounted on one side of the armature plate and a rotational - translational movement converter converting a rotational drive rotational movement into a translational activation movement of brake shoes arranged on a side of the armature plate facing away from the actuator in a brake drum , and including at least one supporting device between the brake shoes such that the latter can carry out an activation movement in the direction of the brake drum . a drive nut is supported by the rotational - translational movement converter in an axially secure and rotatable fashion on the armature plate to assist the braking force . the drive nut drives a spindle arrangement mounted in a rotationally fixed and axially displaceable fashion and engages with an activation cable on at least one brake shoe .