| CPC G02B 6/3825 (2013.01) [G02B 6/3849 (2013.01); G02B 6/3879 (2013.01)] | 7 Claims |

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1. A fiber optic adapter comprising:
an outer housing defining two connection slots that extend in a front-rear direction, and that are parallel to and spaced apart from each other;
a receiving seat connected detachably to a front end of said outer housing, and defining two through grooves that are respectively in spatial communication with said connection slots; and
a blocking mechanism mounted on said receiving seat, and including a pivot shaft that is mounted on said receiving seat and between said through grooves, a torsion spring that is sleeved on said pivot shaft, and two cover plates that are connected pivotally to said pivot shaft and that are respectively connected to two opposite legs of said torsion spring, each of said cover plates being pivotable about said pivot shaft against a resilient force of said torsion spring from a blocking position to an open position relative to the receiving seat;
wherein, when each of said cover plates is in the blocking position, said each of said cover plates blocks a respective one of said connection slots, and is inclined relative to a central axis of the respective one of said connection slots with a free end of said each of said cover plates that is distal from said pivot shaft being more towards the rear than said pivot shaft, and with an angle that is defined between said each of said cover plates and the central axis being not a right angle;
wherein, when each of said cover plates is in the open position, said each of said cover plates is retracted backward and inward to be parallel to the central axis of the respective one of said connection slots and unblocks the respective one of said connection slots;
wherein each of said cover plates of said blocking mechanism includes two hinged connections sleeved on said pivot shaft and spaced apart from each other, and a plate body connected to the hinged connections and having a recess that is engaged with a respective one of said opposite legs of said torsion spring;
wherein, when each of said cover plates is in the blocking position, said free end of said each of said cover plates is distal from said free end of another one of said cover plates; and
wherein, when each of said cover plates is in the open position, said free end of said each of said cover plates is proximate to said free end of said another one of said cover plates.
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