Vibration absorber device for a seat in a vehicle, in particular an aircraft or the like
View Patent ↗A framework fixed to the structure of a vehicle, which framework carries a generally planar seat proper via mobility structure for providing the seat proper with mobility relative to the framework. The seat proper is rigid and is suspended from the framework via a deformable structure which is deformable in at least one of the dimensions of the plane of the seat proper. The plane of the framework for supporting the seat proper is disposed above the plane of the seat proper that is supported by the framework, so as to impart a pendular type structure to the structure providing mobility to the seat proper relative to the framework.
1. A vehicle seat having a device for absorbing vibration, comprising a framework adapted to be fixed to the chassis of the vehicle, and carrying a generally planar seat via mobility means that allow the seat to move relative to the framework with pendular movement, wherein the seat is rigid and suspended pendularly from the framework by non-elastic means for pendular movement relative to the framework,
wherein the seat defines a support plane and the framework defines a parallel framework plane offset from said support plane;
wherein the mobility means of the seat is made up of a plurality of strands of flexible cable successively connecting the framework and the seat to each other, with the strands of cable being secured thereto via sets of engagement members, the engagement members in each of the sets being allocated respectively to the framework and to the seat;
wherein at least one of said engagement members is disposed in the support plane and at least one is disposed in the framework plane;
the sets of engagement members being distributed at pluralities along the corresponding sides of the framework and of the seat, and
wherein the strands of the cable extend through the support plane and the framework plane to pendularly suspend the seat from the framework by successively engaging said engagement members.
2. A device according to claim 1 , wherein the framework is a frame housing the seat and its mobility means in such a manner that the overall volume of the seat and its mobility means lies within the overall volume of the framework.
3. A device according to claim 2 , wherein the framework is arranged as a rectangular frame housing the seat and its mobility means in the thickness of its opening.
4. A device according to claim 1 , wherein said engagement members are constituted by studs having the cable wound around each of them.