| 摘要 |
A door auto-locking system is provided to lock and unlock a door easily and conveniently without using a lock. The inventions relates to a door auto-locking system capable of locking a door by attaching fixed brackets(5) on two sides of a hanger door and a sliding door and coupling a primary locking pin(1) and a secondary locking pin(2) automatically using a spring(4), and unlocking a door by pulling a lever(3) downward and making the secondary locking pin deviate from a groove of the primary locking pin. |
