Spindle drive for a closure element of a motor vehicle

A spindle drive for a closing element of a motor vehicle, the spindle drive comprising a spindle/spindle nut mechanism which comprises, as drive components of the spindle drive, a spindle and a spindle nut which meshes with it for generating linear drive movements along a geometric spindle axis, a motor-side drive portion of the spindle drive comprising a drive unit with a drive motor and the spindle, the spindle being connected downstream of the drive motor, a spindle nut-side drive portion of the spindle drive having the spindle nut, the two drive portions being connected in each case to a drive connector of the spindle drive in order to output the drive movements, the drive unit and the spindle/spindle nut mechanism being axially fixed with respect to one another and being arranged behind one another along the geometric spindle axis, the spindle drive having a drive housing with at least one housing tube which is axially fixed with respect to the motor-side drive portion, a guide tube being arranged at least in portions radially within the housing tube which is axially fixed with respect to the motor-side drive portion, which guide tube is axially fixed with respect to the motor-side drive portion and guides the drive component of the spindle drive axially during the drive movements,

• wherein the housing tube which is axially fixed with respect to the motor-side drive portion and the guide tube are connected to one another in a positively locking manner in a mounting movement which comprises at least two part movements which follow one another, and
• wherein one part movement is an axial movement, and a following part movement is a radial or tangential movement of a tube portion of the housing tube, which is axially fixed with respect to the motor-side drive portion, relative to a tube portion of the guide tube.