Drive device for a closure element of a motor vehicle

A drive apparatus configured to open and close a closure element of a motor vehicle, the drive apparatus comprising:

• a tube defining an axis;
• a spindle nut disposed within the tube and connected and fixed axially to the tube;
• a spindle disposed within the tube, the spindle nut being operatively engaged to the spindle, wherein the spindle, while rotating in the spindle nut, is configured to move relative to the tube along the axis from an extended position to a first retracted position and a second retracted position;
• a stop nut fixed to the spindle;
• and
• a damping element disposed between the spindle nut and the stop nut, wherein the tube defines a first end stop face and the stop nut defines a second end stop face, and wherein when the spindle is in the first retracted position, the damping element engages the first end stop face and is spaced apart from the stop nut, wherein when the spindle is in the first retracted position, the damping element is plastically deformed from a non-deformed state to a plastically deformed state.

A drive apparatus configured to open and close a closure element of a motor vehicle, the drive apparatus comprising:

• a tube defining an axis and having a circumferential projection extending towards the axis, wherein the circumferential projection defines a first end stop face;
• a spindle nut disposed within the tube and connected and fixed axially to the tube;
• a spindle disposed within the tube, the spindle nut being operatively engaged to the spindle, wherein the spindle, while rotating in the spindle nut, is configured to move relative to the tube along the axis from an extended position to a first retracted position and a second retracted position;
• a first stop nut fixed to the spindle;
• and
• a damping element disposed between the spindle nut and the first stop nut, wherein the first stop nut defines a second end stop face, and wherein when the spindle is in the first retracted position, the damping element axially engages the first end stop face and is spaced apart from the first stop nut, wherein the damping element is formed by a second stop nut, the dimensions of the second stop nut and the material of the second stop nut being identical to the dimensions and the material of the first stop nut.