Spindle drive, method for producing a spindle drive, and comfort drive

A spindle drive (10), with a spindle (20) which is rotatable about a rotation axis (24) at least indirectly by a drive motor (12), the spindle (20) having a thread-like spindle turn (22) on which a spindle nut (26) is arranged movably in a longitudinal direction of the rotation axis (24), and with a worm gear (15;

• 15a) which is arranged in a gear housing (14), which is drivable by the drive motor (12) and which is connected to the spindle (20) for conjoint rotation therewith, wherein the spindle turn (22) is configured in a region of the worm gear (15;
• 15a), wherein the worm gear (15;
• 15a) is formed from at least first and second elements (36, 38;
• 60, 62, 64), wherein the first element (36;
• 62) of the worm gear (15;
• 15a) has an outer toothing (17) and in the longitudinal direction of the spindle (20) is connected to the spindle (20) for conjoint rotation therewith, and wherein the second element (38;
• 60, 64) of the worm gear (15) axially braces the first element (36) of the worm gear (15) against the spindle turn (22) of the spindle (20) in the longitudinal direction of the spindle (20), or the first element (62) of the worm gear (15a) is fixed between two second elements (60, 64) of the worm gear (15a).