▎ 摘　　要

NOVELTY - The utility model claims a new three-section hinge shaft embedded with lubricating sleeve, graphene the lubricating sleeve is respectively set on the upper and lower ports of the middle shaft, the top end shaft of the door shaft is sleeved graphene the lubricating sleeve set on the upper port of the middle shaft, the bottom shaft of the door shaft is sleeved graphene the lubricating sleeve set at the lower port of the middle shaft. The utility model has simple structure and convenient operation, through graphene the lubricating sleeve to connect the door shaft top shaft, a middle shaft, door shaft bottom end shaft solves the problem that the existing hinge shaft practical wear rate is high, after using for a long time need to frequently add lubricating oil.