A pick-proof lock

Abstract

The application discloses an anti-theft lock and relates to the technical field of zipper locks, which comprises a lock body, a lock tongue groove and a lock hole arranged on the lock body, a lock tongue, a lock cylinder arranged in the lock body, a trigger capable of rotating, and a latch tongue capable of sliding in the lock body. The latch tongue is connected with the trigger through a transmission structure. The transmission structure can convert the rotation of the trigger into the linear motion of the latch tongue, so that the latch tongue can limit the connection end entering the lock hole from being separated. When the lock is closed, the connection end of the lock tongue is put into the lock tongue groove, and the latch tongue is driven to move to limit the connection end from being separated from the lock tongue groove. Since the lock tongue can cover the lock tongue groove, the lock cannot be opened by using a wire or a crowbar, and the risk of lock picking is avoided. When the lock is opened, the key enters the lock body from the lock hole, the key is rotated to drive the trigger of the lock cylinder to rotate, and the trigger drives the latch tongue to remove the limitation on the connection end through the transmission structure.

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