A kind of wheel chair frame, comprising two or so opposite side frame units, position what this etc. support unit and a hinged unit by the support unit pivot joint what equal side frames unit between side frames unit. Each side frame unit includes a side lever. The support unit includes two struts and a shaft that the grade struts are articulated arranged in a crossed manner and that be in X-shaped, which can strut or fold each other centered on the shaft. The hinged unit include two pin joint seats, two respectively by the pin joint seats interlocking such as this what this etc. side levers connection group and two pivoted poles that the one end of the grade struts is swingably pivotally connected to the what grade pin joint seats respectively. By the interlocking design of the equal connections group, it may make the grade pin joint seats to connect easy easy and strength enhancing in group, be that there is preferable installation effect.一種輪椅骨架，包含兩個左右相對的側架單元、一個位於該等側架單元之間的撐架單元，及一個將該撐架單元樞接於該等側架單元的樞接單元。每一個側架單元包括一支側桿。該撐架單元包括兩支交叉設置而呈X形的撐桿，及一支將該等撐桿樞接在一起的軸桿，該等撐桿可以該軸桿為中心彼此撐開或收合。該樞接單元包括兩個樞接座、兩個分別將該等樞接座鎖接於該等側桿的連接組，及兩支分別將該等撐桿之一端部可擺動地樞接於該等樞接座的樞接桿。藉由該等連接組的鎖接設計，可使得該等樞接座在組接上簡便容易且強度提升，乃具有較佳的安裝效果。
