Release device for Solar generator hold-down unit

摘要

The pre-tension force (37) in the bolt (3) is transmitted via a bolt end thread (3a) into the inner thread (33) of the release element, with the inner thread held half in the release element housing (21) and half in an opener (22). The opener is pivotally inserted in a sector (21d) of the housing, and a wire coil (24), wound around the opener and a housing part (21a), keeps them in position. Opening the coil enables the opener to swing out and thus release the bolt (3). The bolt in the topmost panel is pre-tensioned by means of a nut pressing against a cup component. The ends of the wire coil are held by fuse wires which melt when current is applied to free the opener.