Abstract: An automatically disengagable safety buckle utilizes a C-shaped rod-like element secured to one end of a flexible safety strap. A plate having a hook-like end is secured to one end of another flexible safety strap. The C-shaped rod is introduced between a spring-like sheet secured to the plate and spaced non-uniformly outwardly therefrom on the side of the plate carrying the hook. The C-shaped rod is permitted to slide along the sheet, after entry, to a dwell position which is defined by an outwardly disposed arcuate excursion in the surface of the sheet. The apparatus is employed prior to impact with the rod-like element reposing in the dwell position. Upon impact, the C-shaped element is displaced towards the hook of the plate and is forced upwardly and outwardly therefrom by a hook-like end of a spring secured to the plate, causing the rod-like element to become disengaged from between the sheet and the plate, thus decoupling the rod-like element from the plate.