Locking device with mechanical detection of closing and opening

A locking device for locking between a first structure and a second structure, said locking device comprising several locking pairs arranged along a locking line and connected by a linkage structure, each locking pair comprising at least one bolt connected to the first structure and adapted to engage with at least one corresponding retaining means which is connected to the second structure, the at least one bolt being further movably mounted against at least one elastic return means which tends to return the at least one bolt to a position spaced apart from the retaining means,

• said locking device further comprising an indicator connected to the linkage structure, the indicator providing an indication of a locked position and an unlocked position of all the locking pairs,
• the linkage structure including at least one detection linkage, the at least one detection linkage extending through the locking pairs to always connect the locking pairs together and to connect the locking pairs to the indicator, the linkage structure movably mounted between a unlocked position where the at least one detection linkage allows unlocking of the at least one bolt and the at least one corresponding retaining means, at least a portion of the at least one bolt then engaging with the detection linkage so as to block a possible return of said detection linkage towards a locked position where the detection linkage engages with said at least the portion of the at least one bolt so as to oppose unlocking of the at least one bolt,
• wherein said at least the portion of the at least one bolt engages with the detection linkage by means of at least one detecting part of said detection linkage, said at least one detecting part being movably mounted between a locked position, corresponding to the locking of the locking pair, where the at least one detecting part allows the locked position of the detection linkage and is adapted to be driven by the at least one bolt towards an unlocked position where the at least one detecting part drives the detection linkage to the unlocked position of the detection linkage, a shifting of the detection linkage to the unlocked position being thus provided when one locking pair is unlocked,
• wherein the indicator provides an indication if not all locking pairs are locked.