The utility model relates to a guardrail handrail lifting mechanism of a bed.It is applied to the bed.Including: a base,The utility model is arranged on the bed body and has a hollow part and one side perforation；An inner seat,In the hollow section,The utility model has handrails on both sides and a space and a slide way.A middle hole and a side hole with a safety buckle are arranged in the center and one side.The upper space is provided with a buffer cross bar and a T-shaped middle platform corresponding to the middle hole；Second push block group,On a straight slide；(II) fixed cover,The straight slideways are respectively arranged at the lower part of the inner seat.Including the former,Rear fixing cover；(II) active control block,It is arranged on the fixed cover and connected with the lower section of the push block group.One side and the opposite side are provided with a long through hole and a slide rail；Two stop pins,The utility model is arranged in a movable control block and has a top convex knob corresponding to a long through hole and a side hole.The two ends of the slide rail are provided with side sliding blocks corresponding to the slide rails.A compression spring is arranged between the utility model and the rear fixed cover.With this structure, the inner seat of the handrail can be vertically lowered and pulled upward by one hand.一種床之護欄扶手升降機構，係應用於床體，包括：一基座，係設於床體且具有一中空部及一側穿孔；一內座，設於中空部，其兩側具有扶手且具有一上空間及一直滑道，其中央及一側設有一中孔及具有安全扳扣之一側孔，該上空間設有一緩衝橫桿且具有對應中孔之一T形中台；二推塊組，設於直滑道；二固定罩，分別設於內座下段之直滑道，包含一前、後固定罩；二活動控制塊，設於固定罩且與推塊組下段連接，其一側及相對側設有一長透孔及一滑軌；二止頂銷，設於活動控制塊且具有對應長透孔及側穿孔之一頂凸鈕，其兩端設有對應滑軌之側滑塊，其與後固定罩間設有一壓縮彈簧。藉此結構，單手即可將具有扶手之內座以垂直方向作向下垂落及向上拉動定位。
