Application principle of bicycle anti-theft lock
Bicycle locks play the role of anti-theft bicycles. There are bicycle locks with different functions on the market. In the early stage of reform and opening up, many people called for strengthening the safety of bicycle locks.
The bicycle anti-theft lock is composed of a lock head, an inner lock seat, and a plunger. The lock head and the inner lock seat are fixed on both sides of the horizontal rod of the bicycle rear wheel frame with screws and connecting devices. The plunger passes through the rear wheel and the inner lock seat. Fixed on the lock head, the inner lock seat is provided with a through hole with a necking in the middle perpendicular to the plunger. On both sides of the necking, a lock pin that can be inserted between the teeth of the flywheel and covered with a spring is inserted at one end. The pin passes through the neck and is hinged with the pull pin rod, and the lock pin is provided with an incision which can be mutually engaged with the insert rod. When in use, one end of the lock pin is pushed into the teeth of the flywheel by a spring, and then the plunger is inserted into the lock head to lock, the flywheel and the wheel cannot be rotated.
The most common and safe types of anti-theft locks for bicycles
Cross-shaped chain lock: No matter how thick you are, the above tools can be quickly opened in 2-5 seconds. The success rate is at least 90%. We have tried with intercepted tools. The cross reamer can easily smash the lock core. The characteristic is the lock core cross type; the flat ordinary lock: it is also very easy to open with a master key and a reamer, as long as the tools are used properly, the probability is 80%; the chain lock: the chain lock is firm on the surface, but it is easy to be cut by the pliers . The chain-linked chain type basically cannot resist the violence of the pliers, and the twisted-wire type can only be considered if it is thick enough.
U-shaped lock: As long as it is not a low-quality lock, its firmness is much higher than that of a chain lock, and the low-quality lock can be opened with bare hands in two seconds. The U-shaped lock is divided into one point fixation and two point fixation, that is, it depends on whether the U character and the one character can be separated. The weak point of the fixed U-shaped lock lies in the junction of the U-shape and the one-shape. The hinge structure will inevitably cause insufficient thickness, which can be cut by pliers. The two-point fixed U-shaped lock has good anti-theft performance and low theft rate. Idling lock: The lock core can be idle and the anti-prying effect is good. It is currently the best anti-theft car lock on the market, but the price is not cheap. Therefore, you can choose the one that suits you according to your needs.