The electric lock does not have any mechanical lock tongue structure, and completely uses its strong "suction force" to suck the door leaf to achieve the purpose of locking. When the passage with frequent access must be "access control", the electromagnetic lock is the most durable, stable and safe electric lock. The electric lock is an electronically controlled lock that drives the "lock tongue" to extend or retract through the on and off of the current to achieve the function of locking or opening the door. The general electric bolt lock consists of two main parts: the lock body and the lock hole. The key component in the lock body is the "lock tongue", which cooperates with the "lock hole" to achieve the two states of "closing the door" and "opening the door". That is, the lock tongue enters the lock hole to close the door, and the lock tongue leaves the lock hole to open the door.
It is precisely because of the elastic function of the lock tongue that it is called "electric bolt lock". It is also because of this feature that electric bolt locks are often used on various swing doors (two-way opening). At the same time, its "hidden" device feature is more suitable for places where the confidentiality of the lock body is required to be high. The working principle of the magnetic lock is the same as that of the electromagnet. It uses the principle of electromagnetism and then the opposite poles attract each other. When the current passes through the silicon steel sheet, the electromagnetic lock will generate a strong suction force to tightly absorb the adsorption iron plate to achieve the function of locking the door. Only a small current will generate a huge magnetic force. The access control system that controls the power supply of the electromagnetic lock will cut off the power after the person is recognized correctly. The electromagnetic lock loses the suction force and the door can be opened. Because the electromagnetic lock does not have a complicated mechanical structure and the structure of the lock tongue, it is suitable for the passage control of escape doors or fire doors.
The lock body is protected by injection epoxy resin (epoxy) inside. The suction strength of the electromagnetic lock is now indicated in LB (pounds), and the inspection method is static pressurization. The so-called static pressure is that after the electromagnetic lock is powered on, the pulling force on the adsorption iron plate is gradually increased. When it exceeds the suction force of the electromagnetic lock, the adsorption iron plate is instantly opened. The data of this pulling force of the electric control lock is the pulling force value of the electromagnetic lock. In addition, the force between the electromagnetic lock and the adsorption iron plate must be face to face and linearly pressurized, so that the suction force of the electromagnetic lock is the largest. The adsorption iron plate may be magnetized for a short time due to the long-term magnetic induction of the electromagnet.
