초록 ▼

The present invention relates to a double flooring structure which may be used to constitute the floor of a computer room or the like in a building. The double flooring structure has excellent constructibility, high earthquake resistance, a wide underfloor space and excellent resistant to deformatio

The present invention relates to a double flooring structure which may be used to constitute the floor of a computer room or the like in a building. The double flooring structure has excellent constructibility, high earthquake resistance, a wide underfloor space and excellent resistant to deformation under load. The double flooring structure of the present invention comprises bases secured to a floor surface, columnar leg members pivotally standing on the bases, respectively, stringers each stretched between a pair of adjacent columnar leg members, floor panels supported on the stringers, and fastening means for securing the floor panels to the columnar leg members. The pivot point of each columnar leg member is disposed near the floor surface. When the floor panels are secured to the columnar leg members by the fastening means, the columnar leg members, the stringers and the floor panels constitute in combination one rigid body. Accordingly, a load which is applied to each floor panel is dispersed effectively and efficiently. If a lateral load is applied to the double flooring structure of the present invention, the columnar leg members are urged to pivot. However, since the pivot point of each columnar leg member is disposed near the floor surface, it is possible to minimize the bending moment that acts on that portion of each base which is bonded to the floor surface.

대표청구항 ▼

A free access floor comprising: a plurality of bases secured to a surface where said free access floor is to be built, each of said bases having a base plate, a threaded member standing on said base plate, and a height adjusting nut screwed on said threaded member; a plurality of column members supp

A free access floor comprising: a plurality of bases secured to a surface where said free access floor is to be built, each of said bases having a base plate, a threaded member standing on said base plate, and a height adjusting nut screwed on said threaded member; a plurality of column members supported on said bases, respectively, and each being pivotally engaged at the lower end portion thereof with said height adjusting nut and thereby supported so that each of said column members has a pivot point near said free access floor building surface; a plurality of stringers each connected between a pair of adjacent column members in such a manner that said stringer is not displaced relative to said column members, said stringers extending substantially horizontally; a plurality of floor panels supported on said stringers; and fastening means for securing said floor panels to said column members; said height adjusting nut having a shoulder portion and an annular groove formed in the peripheral surface thereof, said shoulder portion being reduced in diameter at the upper side thereof, said groove being disposed above said shoulder portion, so that the lower end portion of said column member is engaged with said shoulder portion, and a disengagement preventing bolt attached to said column member, said bolt being radially movable toward and away from said column member, the distal end portion of said bolt being fitted into said annular groove.