Interchangeable polarity LC pair connector

The utility model discloses an interchangeable polarity LC pair connector, technical scheme include the protheca and install the pair cassette in the protheca install the frame cover respectively in the draw -in groove of pair cassette front end both sides, the rear end is equipped with the tail cover, the butt joint of frame cover front end has the inside casing cover, the outside cover of insidecasing cover is equipped with the rotary sleeve, internally mounted has the lock pin caudal peduncle, the rotary sleeve passes through elastic clamping part and protheca joint, the outside cover of lock pin caudal peduncle is equipped with the spring, connection of after section prevents the rubber tube, its characterized in that: the both sides of protheca are equipped with elasticity and pressthe splenium it articulates with the groove that hangs in the ring cover portion of pull rod front end to set up the couple on the free end of elasticity according to the splenium, ring cover portioncover is established and is