Bed frame constituted by a rigid frame and slats and subassembly adapted for the production of such a bed frame

Bed frame constituted by a rigid frame (5) and slats (1) in which the slats (1) are carried pair-wise at each of their ends by a flexible support (2) comprised by an element (20) into which are inserted the two slats (1) and two symmetrical elbowed branches, constituted by two lower portions (21, 22) and two upper portions (23, 24) articulated to each other by a hinge (27, 28), the lower portions (21, 22) of said support being mounted freely in rotation on bearings (242) secured to the rigid frame (5) of the bed frame and each terminating in a toothed wheel portion (25, 26) which engages the toothed wheel portion of the other lower portion of the branch of the support, the supports (2) located at the two ends of the slats (1) of said pair of slats being secured together in rotation by two transverse rods (3) connecting the lower portions (21, 22) and constituting a resilient return means, a spring being disposed between each support (2) and an abutment carried by the rigid frame (5) of the bed frame, characterized in that each abutment (243) carried by the rigid frame (5) against which the spring bears (4) is carried by a carrying member (240) which supports the bearings (242) on which are mounted the lower portions (21, 22) of the support branches (2).