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 the spindle for generating linear drive movements along a geometric spindle axis, a motor-side drive portion of the spindle drive comprising the spindle and a drive unit with a drive motor unit, the drive motor unit comprising a drive motor, the spindle being connected downstream of the drive motor, a spindle nut-side drive portion of the spindle drive having the spindle nut, the motor-side drive portion and the spindle nut-side drive portion 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 a drive unit housing, the drive unit housing comprising a motor tube configured to receive the drive motor unit, and at least one housing tube, wherein the at least one housing tube 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 configured to be connected to one another in a positively locking manner, wherein the housing tube and the guide tube are configured to be connected in the positive locking manner via 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.