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Anonymous users2024-01-24Two of them are more likely. First, the lever of the lock cylinder is broken (there are also gears). The second is the dislocation of the lock body slot.
Remove the lock cylinder first, if it is not its problem, then remove the lock body, because after all, it will be relatively troublesome to remove the lock body. At present, the highest anti-theft level of civil mechanical locks is C, such as the Meriburg C-level blade lock cylinder, or the Baodi C-level blade lock cylinder. The price is not high, and the quality is good.
I changed one last year and it was good. You can find it on a certain treasure, which will be about half cheaper than a physical store.
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Anonymous users2024-01-23If the lock cylinder screw is loose or the lock cylinder is broken, find a professional locksmith to solve it.
It may be a failure of the lock body, it is recommended to find a lock repair master from a professional store to check it.
Who really repairs the lock cylinder, basically no one repairs it, because it can't be repaired, it's better to change it.
Two turns when the lock is reversed, and two and a half turns when the lock is unlocked.
The more you can't pull it out, the more light it is, gently shake it from all directions, rely on luck to shoot the ants can pull it out and bury it, it's really not good to fill the net lock cylinder with lubrication He Yin oil, good luck.
Can you take a photo of your security door lock? Do you mean positioning the lock by lock rebound?