Slow closing door hinge

A slow-closing door hinge, including a first foldout and a second foldout having a shaft sleeve respectively,

• wherein, a fixed rod is fixedly mounted in the shaft sleeve of the first foldout, and a rotating rod is fixedly mounted in the shaft sleeve of the second foldout,
• the fixed rod is connected with the rotating rod by a connecting rod,
• the connecting rod and the fixed rod are flexibly connected, and form a hollow groove,
• a restoring spring being in contact with the fixed rod and fixed to the connecting rod is provided in the hollow groove,
• the connecting rod is connected with the rotating rod in a coaxial, rotationally actuating manner,
• the connecting rod is driven reciprocally to move within the shaft sleeve by a relative forward and backward rotation of the fixed rod and the rotating rod cooperating with the restoring spring, and
• a structure of the coaxial rotational actuation of the connecting rod and the rotating rod is as follows:
• an undulating chute is provided on a first contact end surface of the connecting rod and a contact end surface of the rotating rod, respectively,
• the undulating chute includes a convex portion, a concave portion, and a slope between the convex portion and the concave portion, and
• when the connecting rod and the rotating rod relatively rotate, a dislocation of the concave portion and the convex portion of the undulating chute changes the axial displacement of the connecting rod and the rotating rod.