New bicycle anti-pick lock
This kind of lock has five marble holes and a few marbles. It is a small five-tooth lock. The key is made of all copper. Its lock body is an all-clad steel shell with no gaps. Unlike old bicycle locks, there is an open long curved notch on the lock cylinder shell of the lock body, and there is no bolt. It is equipped with a gear behind the lock core. This button is connected to a shrapnel that just fits into a side slot on the lock core. There is a strong tension spring at the end of the lock cylinder. When you press the button on the bottom of the hospital lock body by hand, the bayonet shrapnel stuck in the lock core will leave the lock core. Under the action of the tension spring at the end of the lock column, the gear on the lock column drives the upper gear of the lock core to make The lock heart turned around. If it is locked, you need to hold the key and turn it counterclockwise by 800 degrees. The rotation of the lock core drives the gear, and then drives the gear on the lock column to extend the lock column downwards, and the lock is naturally locked. Only then can the key be taken out.
Except for the key hole, there are basically no gaps in the whole lock of this kind of lock. And the lock shell is made of all steel, which is relatively strong. Therefore, ordinary thieves use a screwdriver or a small crowbar to pick this kind of lock, and they cannot unlock the lock at all. The installation of this lock is the same as the old bicycle lock, which is fixedly installed on the bicycle tripod to block the wheel and prevent the wheel from rotating.