This creation provides a kind of slope board and unfolds mechanism automatically comprising: a convertible slope board, an electric expansion cylinder and a press rods. The convertible slope board includes at least one first plate body and one second plate body, and the first side of the first plate body is provided with a sliding rail. There is the electric expansion cylinder fixing end and a driving end, driving end to be mounted slidably on what sliding rail by an extension rod. The press rods have a fixing end and a driven end. The driven end of press rods is pivotally connected the first plate body of what and the second plate body through a plurality of extension rods. Slope board unfolds driving force-fitting press rods, telescopic rod and the sliding rail that mechanism is provided using electric expansion cylinder automatically and achievees the purpose that convertible slope board Automatic-expanding or folding.本創作提供一種斜坡板自動開折機構，其包括：一折合式斜坡板、一電動伸縮缸以及一壓力桿。所述折合式斜坡板至少包括一第一板體以及一第二板體，且第一板體之第一側設置有一滑軌。所述電動伸縮缸具有一固定端以及一驅動端，其驅動端係藉由一延伸桿可滑動地設置於滑軌上。所述壓力桿具有一固定端以及一從動端。壓力桿的從動端透過複數個延伸桿而樞接於第一板體以及第二板體。斜坡板自動開折機構利用電動伸縮缸提供的驅動力配合壓力桿、伸縮桿以及滑軌達到將折合式斜坡板自動展開或收折的目的。
