Is the lock inside the toilet door lock horizontal or vertical?

The inside of the toilet door lock is best locked horizontally. Because the lateral protective measures are better. There is no clear standard for locking the door and inserting the key vertically or horizontally. Different types of locks have different lock cores. Keys are inserted in the locked door, most of which are horizontal. The copper cylinder lock core can be locked or unlocked by rotation. The lock teeth have small cylinders of different lengths, exposing a head, which can block the lock core and cannot rotate. The exterior of the lock core of the anti-theft door consists of a lock head, a middle shell and an outer shell. There are slots on the lock core, each slot has a blade and a spring to push the blade, and the blade has a gap to place the movable bolt. The middle shell also has a movable bolt. There is a gap in the inner wall of the shell to place the movable spring, which can reset the movable bolt of the middle shell.