Reconfigurable fiber optic adapter

1. A reconfigurable fiber optic adapter adapted for connecting a male optical fiber connector and a female optical fiber connector together, comprising:

a housing comprising a base portion, a first mating connection portion located at a front side of said base portion, a second mating connection portion located at an opposing rear side of said base portion, a passage extending through said first mating connection portion, said base portion and said second mating connection portion, two plug mouths respectively located in said first mating connection portion in communication between two opposite ends of said passage and the atmosphere, a first keyway and a second keyway longitudinally located in said passage at opposing top and bottom sides, two recesses respectively symmetrically located in opposing top and bottom sides of said first mating connection portion, two mounting groove units bilaterally located in each said recess, and two pairs of hook holes symmetrically and vertically located in the opposing top and bottom sides of said first mating connection portion in communication with said passage; and

a first mating-connection control member and a second mating-connection control member respectively and exchangeably mounted in said two recesses of said housing, said first mating-connection control member and said second mating-connection control member each comprising a base panel mounted in the mounting groove units in the recess at one of the opposing top and bottom sides of said first mating connection portion of said housing and two hook rods bilaterally extended from said base panel and respectively hooked in the respective pair of hook holes in one of the opposing top and bottom sides of said first mating connection portion of said housing, said first mating-connection control member further comprising an Off key located on a bottom side of the base panel thereof and partially projecting into one of said first keyway and said second keyway, said second mating-connection control member further comprising an On key located on a bottom side of the base panel thereof and kept in flush with a bottom wall of one of said first keyway and said second keyway wherein said On key has a height smaller than said Off key, and is kept away from interfering with the sliding movement of a directional key of an external optic fiber connector in said first keyway or said second keyway.

2. The reconfigurable fiber optic adapter as claimed in claim 1 , wherein said housing further comprises two side flanges respectively symmetrically located at opposing left and right sides of said base portion, a locating groove extending around the periphery of said second mating connection portion, and a positioning member mounted in said locating groove, said positioning member comprising two opposing side panels, and two clasp shrapnels respectively obliquely extended from said side panels in direction toward said side flanges of said housing.

3. The reconfigurable fiber optic adapter as claimed in claim 1 , wherein said first keyway extends along said passage from the plug mouth in said first mating connection portion to the plug mouth in said second mating connection portion; said second keyway extends along said passage from the plug mouth in said first mating connection portion to a mid part of said base portion of said housing.

4. The reconfigurable fiber optic adapter as claimed in claim 1 , wherein said housing further comprises two pairs of slots respectively located in opposing left and right sides of said first mating connection portion and said second mating connection portion, and two pairs of springy hooks respectively disposed adjacent to said slots, each said springy hook having a respective outer end terminated in an inwardly protruded hooked portion.

5. The reconfigurable fiber optic adapter as claimed in claim 1 , wherein each said mounting groove unit of said housing comprises a sliding groove and an abutment block; said first mating-connection control member and said second mating-connection control member each further comprises two guide blocks respectively slidably coupled to the sliding grooves of the two mounting groove units in one said recess of said housing, a stop block formed integral with one respective said guide block and stopped at a rear wall of the respective said recess, and a position-limit sliding groove defined between each said guide block and said Off key or said On key and coupled to the abutment block of one respective said mounting groove unit.

6. The reconfigurable fiber optic adapter as claimed in claim 5 , wherein said Off key has a height larger than the height of each said guide block; said On key has a height smaller than the height of each said guide block.

7. The reconfigurable fiber optic adapter as claimed in claim 1 , wherein each said hook rod of each of said first and second mating-connection control members comprises a beveled guide face adapted for guiding movement of the respective said hook rod over into said first keyway or said second keyway, sand a stepped surface portion defined at a rear side of said beveled guide face for hooking in one respective said hook hole.