The drawer lock (the kind with one lock and three locks) does not respond when locked. Can anyone tell me how it works?

The reason why there is no response after locking is that it should not be stuck on the top of the drawer. It is because the lever connecting the three drawers is out of place. Just tighten the lever upwards.

With the application of microelectronics technology, magnetic locks, voice-controlled locks, ultrasonic locks, infrared locks, electromagnetic wave locks, electronic card locks, fingerprint locks, eyeball locks, remote control locks, etc. have appeared. These locks have high security performance that cannot be matched by mechanical structures.

Modern locks can also realize program control of the system according to the set logical relationship in a specific system. Modern locks can be classified according to material, purpose, presence or absence of keys, security features and structure.

Extended information:

Side drawer lock: It can control two or three drawers with one lock. Installed on the side of the office.

Square tongue lock: This is the only common drawer lock. It is installed in the middle of a drawer and can only lock one drawer (as shown in the picture on the right).

Latching tongue drawer lock: After the key is removed, you only need to push the drawer in to lock it, which is easy to use.

Baidu Encyclopedia-Drawer Lock