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Anonymous users2024-01-24The term of that thing is called square steel, which is generally used on the outside for double quick locks (the inside and outside can lift the handle to lock the door) and lock the door by lifting the handle at the outdoor end through the drive of the square steel. Ordinary locks don't have that square steel.
Then you have to see which brand of anti-theft door, why do you want to change the transmission rod? Generally, it is not related to the replacement of the lock cylinder and the transmission rod.
There are three levels of lock cylinders for anti-theft doors, divided into A-level, B-level, C-level, A-level and B-level anti-theft performance is relatively low, familiar can generally be opened in seconds, C-level anti-theft level is the highest, relatively safe, the lock picking time takes 270 minutes, far beyond the range that thieves can bear to pick the lock, therefore, friends who use A-level or B-level lock cylinders at home should be replaced to C-level as soon as possible.
Is the key original? Configured keys are prone to such problems. Then there's the problem of the lock cylinder - lubricate it with pencil powder. If it doesn't work, just find an installer to debug it.
First use sewing machine oil to drip in, (there are sewing machine accessories for sale) wash off the lubricating oil, and then use a pencil to scrape a little pencil ash and stuff it in, and then get it again in 2 weeks.
In this case, if the heaven and earth pole is broken without the need, it is better to find a professional lock repairer, or sell the proceeds to repair it for you.