Self -locking mechanism

The utility model relates to a self -locking mechanism, including drive arrangement, driving shaft, driven shaft, elastic component and casing, drive arrangement drive driving shaft rotates, the driving shaft is connected with the driven shaft transmission, and the qieyu junction is equipped with first draw -in groove and second draw -in groove respectively, first draw -in groove and second draw -in groove set up in opposite directions, the both ends of elastic component are provided with first trip and second trip respectively, elastic component sleeve establishes on driving shaft and driven shaft, first trip card is established in first draw -in groove, second trip card is established in the second draw -in groove, the casing cover is established and is connected on the elastic component and with drive arrangement. The utility model has the advantages of simple structure, volume are light and handy, the operation of being convenient for, economy and the production of being convenient for. 本实用新型涉及种自锁机构，包括驱动装