Spindle drive for an adjusting element of a motor vehicle

A spindle drive for an adjustable element of a motor vehicle, the spindle drive comprising:

• a drive unit;
• a spindle nut mechanism arranged downstream of the drive unit in a drivetrain of the spindle drive, for generating linear drive movements, the spindle nut mechanism comprising a spindle and a spindle nut meshing with the spindle;
• a spindle drive portion and a nut drive portion that run telescopically inside one another during a motorized adjustment, the spindle drive portion comprising a guide tube;
• and
• an anti-twist mechanism comprising at least one first shaped portion within the guide tube and a corresponding at least one mating shaped portion in a region of the spindle nut;
• wherein during the motorized adjustment, the spindle nut runs along an axis of the spindle within the guide tube and is safeguarded against twisting with respect to the guide tube by the anti-twist mechanism;
• wherein the spindle drive portion and the spindle nut drive portion are coupled in a torque-transmitting manner by the anti-twist mechanism, wherein the at least one first shaped portion is or can be brought into torque-transmitting engagement with the corresponding at least one mating shaped portion;
• wherein the spindle nut is designed as a plastic injection-molded part;
• and
• wherein the spindle nut and the spindle nut-side shaped portion for anti-twist safeguarding are injection-molded into or onto the spindle nut tube by the plastic injection-molding process.