The invention relates to an elastic structure design applying the ball screw technology,It allows the user to operate a single device by himself,To achieve the purpose of adjusting the seat to a bed that can lie down,Through a simple device that can rotate,The chair seat of the auxiliary tool can be adjusted to the angle or height suitable for the human body to lie and sit,The utility model can achieve the function of having a bed on the medical auxiliary tools,There is no need for assistance in bed,Therefore, the device can be applied to medical aids such as wheelchairs,With the progress of the times,The prevalence of childlessness,As a result, the elderly lack perfect care,Therefore, the invention can make the user with inconvenient movement more perfect self-care,Reduce the burden on the family,Make life at home more convenient.本發明係一應用滾珠螺桿技術之彈性結構設計，其允許使用者單人操控單一裝置，而達到將座椅調整為可躺臥之床具的目的，使用者透過可轉動之簡單裝置，可將其輔助工具之椅座調整至適合人體躺坐之角度或高度，即可在其醫療輔助工具上達到具有床之功能，無須藉由他人輔助於床上，故本裝置可應用於醫療輔具如輪椅，隨著時代的進步，少子化的盛行，導致行動不方便長者缺乏無完善地照顧，故本發明可讓行動不便之使用者更完善的自我照顧，減少家人之負擔，讓居家生活更佳的便利。
