Mechanical system useful in blocking equipment e.g. solar panel, comprises two parts for relative displacement, an initial blocking unit having a pyrotechnic strip engaged in housings, and a unit for initiating the pyrotechnic strip

The mechanical system useful in blocking equipment e.g. solar panel, comprises two parts (10, 20) for relative displacement, an initial blocking unit (30) in a rest position having a pyrotechnic strip (32) engaged in housings (11, 21) that are formed respectively in the parts, and a unit (18) for initiating the pyrotechnic strip. The housings are formed of helicoidal channel placed at a level of an interface between the two parts and of radial hole according to a translation axis of the two parts, and tangentially extend according to an envelope pf the two parts. The mechanical system useful in blocking equipment e.g. solar panel, comprises two parts (10, 20) for relative displacement, an initial blocking unit (30) in a rest position having a pyrotechnic strip (32) engaged in housings (11, 21) that are formed respectively in the parts, and a unit (18) for initiating the pyrotechnic strip. The housings are formed of helicoidal channel placed at a level of an interface between the two parts and of radial hole according to a translation axis of the two parts, and tangentially extend according to an envelope pf the two parts. The pyrotechnic strip has a sintered composition for presenting a sufficient rigidity before combustion to ensure blocking. La présente invention concerne un système mécanique comprenant deux pièces (10, 20) susceptibles de déplacement relatif et un moyen de blocage (30) adapté pour interdire initialement, en position de repos, un déplacement relatif desdites pièces, tout en autorisant sur commande un tel déplacement, caractérisé par le fait que le moyen de blocage comprend au moins un jonc pyrotechnique (32) engagé dans des logements (11, 21) en regard formés respectivement dans les deux pièces (10, 20).