This invention relates to an apparatus for controlling sitting, lifting and standing by a single power, comprising a lower seat, a power source, an upper seat and a two-rod set. The lower seat has a front end part and a rear end part. The power source has a fixed end part that is fixed on the lower seat and a driving end part that is capable of generating power during a relative expanding and contracting transformation process relative to the fixed end part. The substantially-crossed two-rod set, which has a first end pivoted to the upper seat and second ends respectively pivoted to the fixed end part and the driving end part of the power source, includes a first rod and a second rod, in which the first rod is pivoted in and slidable along a sliding slot of the second rod by a pivot part. When the driving end part and the fixed end of the power source are controlled to have a relative movement, the first and second rods of the two-rod set can be driven to have a mutual motion via the pivot part and the sliding slot of the second rod, thereby forming a structure capable of controllably switching the upper seat and the lower seat among the sitting, lifting and standing modes. Accordingly, this invention has advantages and efficacies such as of providing a single power source to switch among the sitting, lifting and standing modes and a horizontal-type power source to reduce installation space, diminishing power consumption, and locating center of gravity at a center of the upper seat to have excellent stability.本發明係有關一種單一動力控制坐、升、站之裝置,其包括一下座、一動力源、一上座及兩桿組。下座具有前端部及後端部,動力源之固定端部固定於下座上,並設帶動端部與其在相對伸展、收縮的變換過程中產生動力。兩桿組概呈交叉,一端樞接於上座,另端分別樞接於固定端部與帶動端部;且其中一桿係以樞接部樞接於另一桿之滑槽內,並可滑動;當控制帶動端部與固定端部相對移動,可驅動兩桿藉樞接部與滑槽相互運動,達到控制上座與下座在乘座、升高與站立模式間切換之結構。故,本案兼具單一動力源可改變坐、升及站立模式、水平式動力源可減少裝設空間、減少電力損耗與重心位於上座中心相當平穩等優點及功效。10...下座11...前端部12...後端部22...帶動端部30...上座31...前下樞接點32...前上樞接點33...後下樞接點34...後上樞接點30A...腳踏部30B...椅背部40...第一桿組41...第一下端部42...第一上端部43...樞接部50...第二桿組51...第二下端部53...滑槽P1...乘坐位置
