What are the principles of magnetic locks? Reveal the magical magnetic locks

Don't underestimate the small magnetic lock. With just a little current, the electromagnetic lock 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 identified correctly. The electromagnetic lock loses the suction force and the door can be opened. It sounds really unique, right? So what is the principle of the magnetic lock? Let's unveil its mystery right away.
[Principle of magnetic lock (waterproof magnetic lock)]
The working principle of the magnetic lock (or electromagnetic 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 effect of locking the door. With just a small current, the electromagnetic lock 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 identified correctly. The electromagnetic lock loses the suction force and the door can be opened. Since 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 the injection of epoxy resin (epoxy) inside. The suction strength of the electromagnetic lock is now expressed in LB (pounds), and the test method is static pressure. The so-called static pressure means 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 pulled apart. The data of this pulling force 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 (collinear load test), so that the suction force (Holding Force) of the electromagnetic lock is large. The adsorption iron plate may be magnetized in a short time due to the long-term magnetic induction of the electromagnet.
【Magnetic lock (waterproof magnetic lock) installation process】
Step 1: First use a screwdriver to open the cover plate, then use a hexagonal wrench to hit the side plate, and prepare for installation
Step 2: Take out the installation cardboard, fold the cardboard along the dotted line and place the cardboard in the position where the lock is required, then mark the place where holes need to be punched and then punch.
Step 3:
A Fix the iron plate, insert the hexagon socket screw into the iron plate, place the rubber washer between the two metal washers, and then put it on the hexagon socket screw. Insert the iron plate into the three holes punched on the door, and insert the mushroom head from the other side of the door at the same time, and use a hexagonal wrench to lock the iron plate on the door.
B Fix the side plate, fix the side plate to the previously punched door frame with two semicircular head screws (fixed in the long hole of the side plate). Note: Do not lock the side plate tightly, so that it can move back and forth to facilitate the modification of the installation position.
C. Adjust the position of the side plate so that the side plate and the relay plate are in the right position, so that the lock body can be in close contact with the relay plate.
D. Fix the lock body and the side plate. After tightening the semicircular head screws of the side plate, tighten all the countersunk screws, and then remove the semicircular head screws and drill holes in the appropriate position for wiring. Finally, use a hexagonal wrench to lock the lock body to the side plate.
Step 4: Connect the wires according to the instructions in the manual.
Step 5: Cover the cover and insert the small aluminum cylinder into the screw hole of the lock body.
[Precautions for installing magnetic locks (waterproof magnetic locks)]
Do not drill holes in the relay plate or the lock body; do not replace the relay plate fixing screws; do not wipe the electromagnetic lock with irritating detergents; do not modify the circuit. Maintenance: The maintenance of magnetic door locks is relatively simple compared to other locks. You only need to keep the relay plate and the lock body free of impurities, so please wipe their surface with non-corrosive detergent regularly.
When installing the iron plate, do not lock it tightly, allow it to shake slightly to facilitate the natural combination with the lock body.