ZhangY. Z. and Y. C. contributed equally to this work., Yingxue, Chen, Yao, Huang, Jielong, Liu, Yangchengyi, Peng, Jinfeng, Chen, Shangda, Song, Kui, Ouyang, Xiaoping, Cheng, Huanyu, and Wang, Xiufeng
A slow-closing door hinge, includes a first foldout and a second foldout having a shaft sleeve respectively. A fixed rod mounted in the sleeve of the first foldout, and a rotating rod mounted in the sleeve of the second foldout are connected by a connecting rod. The connecting rod and the fixed rod are movably connected, with a hollow groove at the joint. A restoring spring in contact with the fixed rod and fixed to the connecting rod in the hollow groove. The connecting rod is connected with the rotating rod in a coaxial, rotationally actuating manner. The forward and backward rotation of the fixed rod and the rotating rod cooperates with the restoring spring to drive the connecting rod in a reciprocal motion within the shaft sleeve.