Anti theft door, the second lock of the door lock can not be locked, how to solve it?

Can lock the first way, if you can't lock the second way, see if there is a foreign object stuck in the hole of the door latch inserted into the door frame, open the door and try to see if it can be locked, if it can be locked, it is the above problem, if the door is not locked, it is the internal connector of the door is stuck, call someone else to repair it.

The easiest way: lock the nest of the heaven and earth lock (that is, the upper and lower tie rods), and use something like a screwdriver to cut it off and keep it safe. Remove the doorknob, you can see the beam connecting the lever above and below the lock body, and use a hard object to force the upper beam downwards and the lower beams upwards, which means that the beams are closer to the lock body, and the upper and lower levers are towards the recovery point.

The full name of the security door"Anti-theft security door"。It combines anti-theft and security performance.

It is possible that the auxiliary lock on the side is stuck, so take a closer look to see if the lock on the side of the door is retractable and retractable. If you really can't do it, then consider changing the lock body. My house is that the auxiliary lock on the side is stuck.

Hello, in this way, you can try to see the following method introduction, the tongue of the door lock may be too long, the door tongue originally used the bevel of the tongue "triangle" to borrow a little force into the buckle, but because of the deformation, the contact point between the door tongue and the door buckle became flat (it takes a certain force to act to enter the buckle), so when the door is about to close is stuck. If this problem is really caused by the inability to close the door, I recommend reinstalling it again and adjusting the hinge to ensure that the contact point between the door tongue and the door buckle is on the "three solutions" slope.