Abstract
Modern people spend plenty time on 3c product such as pads and smart phones causing poor posture which could lead to Scoliosis. If we don’t treat it appropriately, it may cause backache, bad shape, bone spur and furthermore, oppression of heart and liver which probably would cause Dyspnoea. Inversion table is a fitness equipment that could stretch our spine and improve our blood circulation. However, most of the existing commercial inversion tables don’t operate in a good and steady way. Therefore, this paper attempts to reform existing inversion tables with the target of single operation and easy to ride so that they could fit with variety age of users. At the end, we focus on the gear five-bar mechanism as the main concept of design and compare with four-bar mechanism, explaining the significant effort of saving force due to the complementariness of gear five-bar mechanism. Our goal is to develop a steady, convenient inversion table with the effect of rehabilitation.