Exterior mechanical interlock for a linear actuator

F - Mech Eng,Light,Heat,Weapons – 15 – B

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F15B 15/26 (2006.01)

Patent

CA 2618455

The present invention relates to a locking mechanism, which permits to fix a piston rod (7) of a linear actuator (6) relatively to the cylinder (8) of the same (6). Furthermore, the invention relates to the usage of a linear actuator equipped with such a locking mechanism as well as to an aircraft with at least one linear activator that is equipped with the locking mechanism according to the present invention. The locking mechanism according to the present invention comprises a plurality of first positive locking elements (9) which are arranged lengthwise with the outside circumference of the cylinder (8) and in certain distances to one another and at least one second positive locking element (4), which is moved together with the piston rod (7) upon activation of the linear actuator (6) and thus passes a segment of the cylinder (8). The at least one second positive locking element (4) is positively engageable with one of the plurality of first locking elements (9) at discrete positions of the cylinder lengthwise, by which the piston rod (7) is fixed relatively to the cylinder (8).

La présente invention vise un mécanisme de verrouillage qui permet de fixer une tige de piston (7) d~un actionneur linéaire (6) par rapport au cylindre (8) de celui-ci (6). L~invention concerne en outre l~utilisation d~un actionneur linéaire doté dudit mécanisme de verrouillage ainsi qu~un avion ayant au moins un actionneur linéaire doté du mécanisme de verrouillage conforme à la présente invention. Le mécanisme de verrouillage conforme à la présente invention comporte une pluralité de premiers éléments à verrouillage positif (9) qui sont agencés longitudinalement avec la circonférence extérieure du cylindre (8) et espacés les uns des autres sur certaines distances et au moins un deuxième élément de verrouillage positif (4) qui est déplacé en même temps que la tige de piston (7) lorsque l~actionneur linéaire (6) est actionné et qui, de ce fait, passe un segment du cylindre (8). Ledit au moins un deuxième élément de verrouillage positif (4) peut venir en prise positive avec un élément parmi une pluralité de premiers éléments de verrouillage (9) à des positions discrètes sur la longueur du cylindre, ce qui permet à la tige de piston (7) d~être fixée par rapport au cylindre (8).

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