Working principle and schematic diagram of electromagnetic lock

Before introducing the schematic diagram of the electromagnetic lock, the concept of the electromagnetic lock is introduced. The design of the magnetic lock (or electromagnetic lock) is the same as that of the electromagnet. It is based on the principle of electromagnetism. When the current passes through the silicon steel sheet, the electromagnetic lock will produce a strong force. The suction force tightly sucks the adsorption iron plate to achieve the effect of locking the door. As long as the small current electromagnetic lock will generate a great magnetic force, the access control system that controls the electromagnetic lock power supply will be powered off after the correct identification personnel, and the electromagnetic lock will lose its suction to open the door. Because the electromagnetic lock has no complicated mechanical structure and the structure of the bolt, it is suitable for the passage control of the escape door or the fire door. The inside of the lock body is protected by infused epoxy resin.

Electromagnetic lock schematic

Electromagnetic lock principle

The magnetic lock (or electromagnetic lock) works like the electromagnet. It uses the principle of electromagnetism and then the opposite pole attraction. When the current passes through the silicon steel sheet, the electromagnetic lock will produce a strong suction and tightly absorb the adsorption. The iron plate reaches the effect of locking the door. As long as the small current electromagnetic lock will generate a great magnetic force, the access control system that controls the electromagnetic lock power supply will be powered off after the correct identification personnel, and the electromagnetic lock will lose its suction to open the door. Because the electromagnetic lock has no complicated mechanical structure and the structure of the bolt, it is suitable for the passage control of the escape door or the fire door. The inside of the lock body is protected by infusion of epoxy. At present, the suction strength of the electromagnetic lock is expressed in lb (lb), and the test method is static pressurization. The so-called static pressure is that the electromagnetic lock gradually increases the pulling force on the adsorption iron plate after the electromagnetic lock is energized. When the suction force of the electromagnetic lock is exceeded, the adsorption iron plate is pulled open instantaneously, and the data of the tension force is the tensile value of the electromagnetic lock. Moreover, the force of the electromagnetic lock and the absorbing iron plate must be face to face and a collinear load test, so that the holding force of the electromagnetic lock is the largest. The adsorbed iron plate may be temporarily magnetized due to the magnetic induction of the electromagnet for a long time.