An optical fiber adapter, comprising:
- a body, having an axial accommodation room, wherein the axial accommodation room is formed by a top wall, a bottom wall and two opposite side walls, the two opposite side walls are connected to the top wall and the bottom wall, the axial accommodation room is provided with at least one partition wall opposite to the two opposite side walls, the partition wall separates the axial accommodation room into at least two accommodation rooms, two axial ends of each of the accommodation rooms have a first opening and a second opening respectively, the two opposite side walls and two sides of the partition wall have opposite inner surfaces, each of the inner surfaces forms at least a first thickened component adjacent to the first opening, a side surface of the first thickened component forms an axial guiding portion and a first stopper, the first stopper is located above the axial guiding portion, corresponding to the two accommodation rooms, two slots are formed on the bottom wall, the two slots are adjacent to the first opening, and the top wall has an access opening;
- an inner housing, comprising two inner housing elements, wherein each of the inner housing elements respectively has two hollow cylinders, the two inner housing elements are fixed in the axial accommodation room, the two hollow cylinders of one of the inner housing elements are located in the two accommodation rooms respectively and are toward the first openings, and the two hollow cylinders of the other inner housing element are located in the two accommodation rooms respectively and are toward the second openings;
- a fixing seat, on which at least two insert slots being formed;
- two lower movable shutters, wherein each of the lower movable shutters comprises a lower base, a lower curved connection portion and a lower sheet, the lower curved connection portion is connected to the lower base and the lower sheet, the lower base has a fixing structure, the fixing structure of each of the lower movable shutters is combined with one of the insert slots of the fixing seat respectively, the fixing seat covers the two slots, the lower sheet of each of the lower movable shutters is disposed in one of the accommodation rooms, and two opposite side ends of the lower sheet are located at rear sides of the two first thickened components of the accommodation room respectively and shelter a portion of the first opening;
- two upper movable shutters, disposed in one of the accommodation rooms respectively, wherein two opposite side ends of each of the upper movable shutters are partially located at rear sides of the two first thickened components of the accommodation room respectively and abut against the axial guiding portion and the first stopper, and a portion of the upper movable shutter and a portion of the lower sheet are in overlapping and separable contact to shelter the first openings;
- and
- a cover, covering the access opening.