Device for fixing a fastening ring to a support member and support including it

A device for fixing a fastening ring to a support member, comprising:

• a base configured to bear on a surface bordering at least one opening of predetermined shape in said support member, said base including a pivotal mounting element for a ring;
• at least one foot carried by said base, said foot adapted to be inserted in an axial direction into the at least one opening in said support member said foot including:
• a first pair of mutually opposed lugs extending from said base,
• a crossmember disposed between the lugs of said pair, and
• a second pair of mutually opposed lugs each connected exclusively to the base and separated by a slot,
• wherein said crossmember that faces the lugs of said second pair includes a wedge pointing toward said slot,
• wherein the lugs of said first pair are configured to bend when said crossmember is driven toward the base, and
• wherein the lugs of said second pair are configured to flex outward when the wedge of said crossmember is pushed into said slot;
• and
• at least one rod, said rod configured to enter a bore formed through said base and between said lugs of said second pair of said foot and engage with said crossmember, to drive it toward the base;
• and
• each of said lugs of said first pair including a first section on the side of said base whose height in said axial direction corresponds to that of said support member and a thinner second section away from said base, each of said lugs of said first pair having, internally, a shoulder transverse to said axial direction and uniform over the whole of the width of said lug, said shoulder forming a transition between said first section and said second section.