The new padlock / The new padlock

This design is a new padlock, it can achieve rotation lock, do not press
down. The principle is the main lever is rotated to the locked position, the
lever protrusion elastic piece is pressed rearward, the bullet out of the spring to
unlock the lock to achieve lock function. When turning the key sub-helix structure
will lead to a lock cylinder on the rearward movement of the elastic piece and then
stuck in the lock function to achieve.