Novel snap spring anti-loosening connector

The present invention provides a novel snap spring anti-loosening connector. The connector comprises an outer shell and a connecting nut rotationally assembled outside the outer shell, a snap spring is assembled in the connecting nut, and the front end of a clamping ring arranged on the outer shell in a sleeving mode and axially limited with the outer shell extends into the inner ring of the snapspring so as to prevent the snap spring from deforming inwards to be disengaged from the connecting nut. The clamping ring is designed to be matched with the nut and the outer shell by optimizing thenut and the outer shell, the extending part of the front end of the clamping ring is plugged into the inner ring of the clamping spring, it is guaranteed that the snap spring cannot contract or disengage, the clamping claws extending out of the inner ring of the clamping ring abut against the annular groove of the outer shell, the clamping ring is prevented from disengaging, and the anti-disengaging function of the snap sp