Bicycle lock _ bicycle lock introduction _ bicycle lock brand | merchants

Bicycle lock

Bicycle locks act as anti-theft bicycles. There are bicycle locks with no functions in the market. At the beginning of reform and opening up, many people called for strengthening the safety of bicycle locks. The lever is installed in the center of the main lock body seat through the short pin and spring and can rotate around the short pin. Its two ends are matched with the lock cylinder and the lower lock tongue respectively. The lower lock tongue is located on the inner side of the lever and can slide up and down in the vertical direction when the lever is pulled. Its upper end is a slope and slides up and down with the upper lock tongue in the vertical direction when the lever is pulled, The upper end of the upper lock tongue is beveled and cooperates with the inner end of the upper lock tongue. The lower end extends into the lock pin hole and cooperates with the lock pin head. The upper lock tongue is installed above the lower lock tongue through a compression spring and can move left and right in the horizontal direction. The inner end is provided with a beveled port and cooperates with the upper end of the lower lock tongue. The outer end extends into the copper head hole and cooperates with the copper head of the steel cable. The secondary lock body is composed of a secondary lock body seat The lock tongue is composed of a lock tongue, a jack pin and a lock pin sleeve. The auxiliary lock body seat is riveted to the other end of the lock plate. The upper part of the lock tongue is provided with a copper head hole which is matched with the copper head of the steel cable. The lock tongue is installed behind the copper head hole through a compression spring and can move forward and backward in the horizontal direction. The front end of the lock tongue extends into the copper head hole and is matched with the copper head of the steel cable. The rear end is provided with a bevel port which is matched with the upper end of the jack pin, The jacking pin is installed under the lock tongue through a compression spring and can move up and down in the vertical direction. Its upper end is a slope and cooperates with the rear end of the lock tongue. Its lower end extends out of the secondary lock body seat and cooperates with the locking pin sleeve. The locking pin sleeve is installed at the lower right side of the secondary lock body seat through a pin shaft and can rotate around the pin shaft. A reset spring is installed on the pin shaft, and the center of the locking pin sleeve is a through hole, The lock pin is a long round rod, which is sleeved in the central through hole of the lock pin sleeve through a pressure spring and can slide in it. One end of the lock pin is equipped with a lock pin head which is matched with the lock pin hole on the main lock body seat and the lower end of the lower lock tongue, and the other end is a handle. Both ends of the steel cable are equipped with a copper head which is matched with the copper head holes on the main lock body seat and the auxiliary lock body seat respectively. The copper head is equipped with a steel wire clamp.

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1. Classification of bicycle locks

Bicycle lock

2. Common application of bicycle lock

Bicycle locks are classified as follows: 1. Cross chain lock: no matter how thick your lock is, with the above tools, you can quickly open it in 2-5 seconds with a success rate of at least 90%. We have tried with intercepted tools, and the cross cutter can easily crush the lock cylinder. It is characterized by a cross lock cylinder. 2. 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%. 3. The chain lock is firm on the surface, but it is easy to be cut off by pliers. The chain type with one link after another can't resist the force of pliers. The steel wire twisted type can only be considered if it is thick enough. 4. As long as the U-shaped lock is not inferior, its firmness is far higher than that of the chain lock. The inferior lock can be opened by hand in two seconds. The U-lock is divided into one point fixing and two points fixing, that is, whether the U word and one word can be separated. The weakness of fixing the U-shaped lock at one point lies in the junction of the U-shaped lock and the straight lock. The hinge structure must be not thick enough and can be cut by pliers. The two point fixed U-lock has good anti-theft performance and low theft rate. 5. Anti theft index of key shape of U-shaped lock: zigzag<cross shaped<staggered<crescent shaped

3. Development history of bicycle lock

The development history of bicycle locking is closely related to the development of bicycles. After the bicycle basically developed in an all-round way, the bicycle locks that appeared were mainly cross chain locks. However, for this kind of chain lock, it is more acceptable to use tools to open it, so it began to develop into a flat lock in the later period. Later, because the flat lock is not strong enough, an iron chain lock was produced. With the development of science and technology, more and more different kinds of locks have begun to appear in people's eyes. For example, the self-locking anti-theft bicycle was designed by a British designer named Kevin Scott. As a graduation project for his bachelor's degree in industrial design, his foldable anti-theft bicycle has won a prize of 500 pounds. At present, this design is being displayed in the commercial design center in north London, and it is expected that commercial mass production will be carried out. There are also smart locks, U-locks and so on.