Modular electronic assembly

A modular electronic assembly, comprising:

• a rail comprising a base, elongated according to an axis X, accommodating an electronic board referred to as a backplane bus, elongated according to the axis X, said rail defining a plurality of slots aligned according to said axis X,
• the base comprising, at each slot, on the one hand a first cavity and, on the other hand, two second cavities,
• the backplane bus comprising, at each slot, a row of female connectors,
• a plurality of electronic modules, called modules,
• each module being configured to be mounted in at least one slot of the rail and to be fixedly and reversibly held therein in a so-called operative position, each module comprising:
• a case comprising a bottom and a cap, the bottom comprising at least one retaining member projecting outwardly of said case,
• an electronic board accommodated in the case, comprising at least one connection pin formed by a row of male connectors which extend out of the case via a through aperture formed in the bottom of the case,
• a locking member comprising a lever rotatably coupled to the case and configured so as to be free to rotate relative to the bottom, said lever comprising two hooks at a proximal portion,
• the modular electronic assembly being such that:
• when a module is mounted in a slot of the rail and fixed in the operative position:
• the bottom of said module is positioned opposite the rail,
• a retaining member of the bottom of said module is engaged in the first cavity of the base,
• each hook of the lever of the locking member of said module is engaged respectively in a second cavity of the base,
• the row of male connectors of a connection pin of the electronic board of said module is in contact with the row of female connectors, or
• when a module is mounted in at least two adjacent slots of the rail and fixed in an operative position:
• the bottom of said module is positioned opposite the rail,
• a retaining member of the bottom of said module is engaged in the first cavity of the base at one of the at least two slots,
• one of the hooks of the lever of the locking member of said module is engaged in a second cavity of the base at one of the at least two slots, and the other hook is engaged in a second cavity of the base at another one of the at least two slots,
• the row of male connectors of a connection pin of the electronic board of said module is in contact with a row of female connectors, at one of the at least two slots.