Lock nut mechanism, especially for door lock, has springs and press bracket for automatically returning nut to starting position

摘要

At least two springs (14) cooperate with a flat surface (12) of the lock nut (7) via a press bracket (11) so that as one spring pushes up towards a point next to the nut rotation axis (16), the other spring is pulled away from a point next to the nut rotation axis, causing the nut to pivot. The lock nut automatically returns to its starting position.