Improved hinge unlocking mechanism

The invention relates to an improved hinge unlocking mechanism which comprises a first hinge plate and a second hinge plate which can rotate relatively, the second hinge plate is provided with a limiting notch, the first hinge plate is slidably connected with a check block, and the first hinge plate is hinged to a handle shifting handle on one side of the check block through a shifting handle pivot. The handle shifting handle comprises shifting plates arranged on the upper side face and the lower side face of the first hinge plate in parallel respectively, the same sides of the two shifting plates are connected through a ridge plate, the shifting plates are provided with hinge holes matched with the shifting handle pivot and auxiliary holes used for shifting the check blocks, and the shifting plates are provided with vertical faces abutting against the surface of the first hinge plate on the inner sides of the peripheries of the auxiliary holes. The outer side faces of the shifting plates are not lower than t