Self-locking relay and application method thereof

The invention discloses a self-locking relay and an application method thereof. The self-locking relay is characterized in that a shell of the self-locking relay is internally provided with an armature, an ejector rod locking sleeve, an ejector rod and a coil, the coil is horizontally installed at the inner bottom end of the shell, two coil pins of the coil respectively penetrate through the bottom surface of the shell, two pins are symmetrically welded on the bottom surface of the shell, the two pins respectively run through the lower bottom surface of the shell and extend to two sides of the ejector rod locking sleeve, an armature abnormal movement prevention spring is installed between one end of the armature and a cover body, the other end is connected with an armature ejector rod, one end, which is provided with tapered teeth, of the armature ejector rod is connected with the armature, the other end is inserted into an opening at one end of the ejector rod locking sleeve, and the other end of the ejector