Device for protecting static or mobile land, sea or overhead structures against the blast from an explosion or detonation and associated projections of material

A vehicle comprising:

• a floor;
• and
• a protective device mounted under the floor for protecting the vehicle against a blast from an explosion or detonation and associated projections of material, the protective device comprising:
• at least two connecting elements;
• and
• a protective casing made of several materials, said protective casing being located at a distance from the floor to be protected and connected to said floor by an elastomer connection, said protective casing being positioned by being pinched between the at least two connecting elements and being elastically deformable so that it can deform elastically for a duration of stress induced by the blast by oscillating to spread energy of the blast in several directions over a surface of the protective casing and over time, and then to return completely or partially to an original shape of the protective casing after a period of time,
• wherein said protective casing is mounted on the elastomer connection by a removable attachment,
• wherein said removable attachment has a calibrated breaking level.