Modular printed circuit board holder structure, capable of engaging, in drawer-like fashion, in a rack of an electronic installation

A modular printed circuit board holder structure adapted to be engaged, in drawer-like fashion, in a rack of an electronic installation having a back provided with interconnection elements, said structure comprising a first and a second identical frame each having an inner contour edge which delimits a flat volume, said edge being provided with rabbets onto which a printed circuit board can be attached so as to be contained in said volume, upper and lower horizontal members, a rear vertical member provided with at least one notch in which is engaged a removable connection group comprising a plurality of connection elements, directly connected by means of conductive links to conductive areas of the printed circuit board, a front vertical member having a L-shaped outer rabbet, and two opposite lateral sides equipped with fixing means, one of said lateral sides belonging to said first frame being assembled and fixed against a lateral side of said second frame through said fixing means, the notches of said first frame and said second frame being in coincidence and each L-shaped outer rabbet delimiting therebetween a groove which houses at least partially a locking mechanism enabling said structure to be locked in said rack in an engaged position.