Hinge of hidden buffer

The utility model relates to a hinge of a hidden buffer, the buffer of the hinge comprises a rotor piston rod rotatably arranged in a buffer shell, a swing block is arranged on the rotor piston rod, an elastic sheet is arranged on the swing block, one end of the elastic sheet elastically acts on the swing block, and the rotor piston rod rotates in the buffer shell under the action of external force. The rotor piston rod drives the swing block to move towards the other end of the elastic piece when rotating, the swing block makes contact with the other end of the elastic piece under the action of external force, and the swing block of the rotor piston rod elastically resets through the elastic piece under the action of losing the external force. Through the arrangement, a buffer of a telescopic piston rod is replaced by the buffer of the rotor piston rod, the swing block is arranged on the rotor piston rod, and the outer diameter area of the swing block is larger than that of the end part of the rotor piston r