Monobeam seat with housing receptacle
A seat-floor assembly for a vehicle comprises a floor element and at least one monobeam seat fixed to the floor element by a beam. A seat cushion and a seat backrest fixed to the beam. The floor element comprises a stiffened panel structure, one face of which forms a top sole of at least one floor crossmember. The floor element further comprises a housing receptacle open on the top sole and fixed to the top sole and/or to the at least one floor crossmember. At least one monobeam seat is fixed to the beam. An aircraft fuselage comprises a floor with such seat-floor assemblies and reinforced by the structure of the floor elements.
1. A seat assembly comprising a mono-beam seat and a housing receptacle to fix a beam of the mono-beam seat to a structure of a vehicle;
the housing receptacle, to be fixed under a floor of the vehicle on which the mono-beam seat is arranged, comprises an open on its top face so that inside of the housing receptacle is accessible from a top of the floor;
the mono-beam seat is fixed by a base of the beam entering the housing receptacle via the open top face so that a substantial proportion of structural stress generated by the mono-beam seat in use is transmitted to the housing receptacle; and
the housing receptacle comprises an immobilizing device at the base of the beam configured to fix a position of the beam in at least two different positions inside the housing receptacle at a constant depth.
2. The seat assembly according to claim 1 , wherein the mono-beam seat is fixed only by the beam entering the housing receptacle so that the structural stress generated by the mono-beam seat is transmitted to the housing receptacle.
3. The seat assembly according to claim 1 , wherein the housing receptacle comprises fixing points for fixing the housing receptacle to the structure of the vehicle, the fixing points are arranged such that the housing receptacle is removable and reversible in a longitudinal orientation.
4. The seat assembly according to claim 1 , wherein the housing receptacle is elongate in a longitudinal direction; and wherein the immobilizing device is configured to fix base of the beam in the housing receptacle in said at least two different positions in a longitudinal direction of the mono-beam seat corresponding to a rear-aft direction for an occupant of the mono-beam seat.
5. The seat assembly according to claim 1 , wherein the housing receptacle is elongate in a transverse direction; and wherein the immobilizing device is configured to fix the base of the beam in the housing receptacle in said at least two different positions in a transverse direction of the mono-beam seat corresponding to a left-right direction for an occupant of the mono-beam seat.
6. The seat assembly according to claim 1 , wherein the immobilizing device is configured to fix the base of the beam in the housing receptacle to have at least two different angular positions in terms of an inclination of the beam relative to a vertical direction in a longitudinal vertical plane.
7. The seat assembly according to claim 1 , wherein the immobilizing device is configured to fix the base of the beam in the housing receptacle to have at least two different directions in a vertical plane of symmetry of the mono-beam seat.
8. The seat assembly according to claim 1 , wherein the housing receptacle comprises a sliding or pivoting sleeve in which the beam is fixed, and a locking device to immobilize a position of the slid or pivoted sleeve relative to the housing receptacle.
9. The seat assembly according to claim 8 , further comprising controls, accessible to a user of the moonbeam seat, configured to unlock and lock the immobilizing device.
10. The seat assembly according to claim 8 , further comprising controls, accessible to a user of the moon-beam seat, configured to actuate the locking device to immobilize the beam in different positions.
11. The seat assembly according to claim 1 , further comprising one or more flaps to close off a space between the beam and a top opening of the housing receptacle.
12. The seat assembly according to claim 1 , further comprising a gaiter to close off a space between the beam and a top opening of the housing receptacle.
13. A seat-floor assembly for a vehicle comprising a floor element and incorporating at least one assembly according claim 1 , wherein the floor element comprises a stiffened panel structure having one face forming a top sole of at least one floor cross member; and wherein the housing receptacle is open on the top sole and fixed to at least to one of the top sole and said at least one floor cross member.
14. The seat-floor assembly according to claim 13 , further comprising gusset plates for reinforcing a structural connection between the housing receptacle and at least one of the top sole and said at least one floor cross member.
15. The seat-floor assembly according to claim 13 , further comprising structural connecting rods for reinforcing a structural connection between the housing receptacle and at least one of the top sole and said at least one floor cross member.
16. An aircraft fuselage comprising a floor incorporating one or more seat-floor assemblies according to claim 13 .