This creation relates to the roller structure of a stair lift chair, especially to a stair liftWheel structure with stable chair lowering and smoother movement when lifting. The roller structure of the stair lift chair is matched with the rails to enable the stair lift chair to move up and down on the rails. The wheel groove of the roller is cut into a plane to engage with the rail latch. When in use, the design of the flat groove bottom and the inclined groove frame of the wheel groove of the roller can keep the roller running smoothly on the rail when it is straight or turning, which has considerable practicality.本創作係有關一種樓梯升降椅之滾輪結構，特別是指一種能增強樓梯升降椅穩定性且升降移動時更為順暢之滾輪結構。該樓梯升降椅之滾輪結構其滾輪係配合軌條使樓梯升降椅能於軌條上下移動。該滾輪之輪槽係切削為平面，以與軌條卡掣接合。當使用時，藉由滾輪其輪槽之平面槽底及斜面槽框之設計，能使滾輪在直線或轉彎時於軌條上保持順暢的行進，具有相當之實用性。
