The basic structure of Clutches contains stator of Built-in coil, rotor which filled with Lining and armature plate & spring sheet fixed on the armature cam. The stator is mounted and fixed on a static components directly, such as bracket; the rotor is fixed on rotary shaft by a key; the stator and the rotor are combined to form a magnetic armature by a narrow air signal as a part of the magnetic circuit; the armature plate is opposed to the rotor and maintain a certain clearance; the armature unit for the through shaft is mounted on the shaft through a bearing.
When the magnetic field coil is energized, the stator generates a magnetic field, the armature plate is sucked and connected, meantime, the spring sheet stretching, other parts remain motionless, the connection action has been generated. When the power is off, the magnetic field disappears, and the armature plate is pulled back to the original position by the spring sheet due to the absence of the magnetic field, meantime, the clearance is formed, and connection disconnected.