MPO (Multi-fiber Push On) optical fiber connector

The invention relates to an MPO (Multi-fiber Push On) optical fiber connector. The connector comprises an inner shell and an outer shell movably sleeved on the inner shell back and forth, wherein theinner shell is provided with an inner cavity; a core insert, a spring and a spring limiting seat which is used for limiting the spring are disposed in the inner cavity; the spring limiting seat is inserted at a rear of the inner cavity; the spring limiting seat comprises a limiting seat body; a side surface of the limiting seat body is provided with a buckling bulge in interference fit with a cavity wall of the inner cavity when the spring limiting seat is inserted into the inner shell; and a side wall of the inner shell is provided with a buckling recess in snap fit with the buckling bulge when the spring limiting seat is assembled in position. The spring limiting seat and the inner shell are connected together in a forced assembly manner, and the spring limiting seat compresses the spring located in the inner sh