Lattice support structure

Abstract

The present invention relates to a lattice support structure having mutually connected lattice bars, wherein the lattice support structure has lattice bars extending in the longitudinal direction of the lattice support structure as well as lattice bars connecting them directly or indirectly, wherein the connecting lattice bars are connected to the lattice bars extending in the longitudinal direction such that the spacing of the lattice bars extending in the longitudinal direction of the lattice support structure can be reduced on the folding in of the lattice support structure and can be enlarged on the unfolding of the lattice support structure, wherein at least one of the lattice bars extending in the longitudinal direction is arranged stationary such that it is in a fixed position on the folding and unfolding of the lattice support structure; and in that at least one further of the lattice bars extending in the longitudinal direction is arranged movable so that it undergoes a movement on the folding and on the unfolding of the lattice support structure.

1 . A lattice support structure having lattice bars ( 10 ,  10 ′,  20 ,  30 ,  50 ) connected to one another, wherein the lattice support structure has lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure as well as lattice bars ( 20 ,  30 ,  50 ) connecting them directly or indirectly, the connecting lattice bars ( 20 ,  30 ,  50 ) are connected to the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction such that the spacing of the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure can be decreased on the inward folding of the lattice support structure and can be increased on the outward folding of the lattice support structure, at least one of the lattice bars ( 10 ) extending in the longitudinal direction is arranged in a stationary manner such that it is fixed in place on the inward folding and on the outward folding of the lattice support structure; and at least a further one of the lattice bars ( 10 ′) extending in the longitudinal direction is arranged movably such that it undergoes a movement on the inward folding and on the outward folding of the lattice support structure. 
     
     
         2 . A lattice support structure having mutually connected lattice bars ( 10 ,  10 ′,  20 ,  30 ,  50 ), wherein the lattice support structure has lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure as well as lattice bars ( 20 ,  30 ,  50 ) connecting them directly or indirectly, the connecting lattice bars ( 20 ,  30 ,  50 ) are connected to the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction such that the spacing of the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure can be reduced on the folding in of the lattice support structure and can be enlarged on the unfolding of the lattice support structure, and at least two of the lattice bares ( 10 ,  10 ′) extending in the longitudinal direction are arranged such that they carry out a relative movement to one another extending in the longitudinal direction of the lattice support structure on the folding and on the unfolding of the lattice support structure. 
     
     
         3 . A lattice support structure in accordance with  claim 2 , wherein the lattice support structure is configured in accordance with at least one of the lattice bars ( 10 ) extending in the longitudinal direction being arranged in a stationary manner such that it is fixed in place on the inward folding and on the outward folding of the lattice support structure; and at least a further one of the lattice bars ( 10 ′) extending in the longitudinal direction being arranged movably such that it undergoes a movement on the inward folding and on the outward folding of the lattice support structure. 
     
     
         4 . A lattice support structure in accordance with  claim 1 , wherein the stationary lattice bars ( 10 ) extending in the longitudinal direction and the movable lattice bars ( 10 ′) extending in the longitudinal direction follow one another alternately in the peripheral direction of the lattice support structure. 
     
     
         5 . A lattice support structure in accordance with  claim 1 , wherein the movable lattice bars ( 10 ′) extending in the longitudinal direction undergo a movement on the inward folding and on the outward folding of the lattice support structure by which the spacing and the relative position in the longitudinal direction of the lattice support structure of the movable lattice bars ( 10 ′) extending in the longitudinal direction is changed with respect to the stationary lattice bars ( 10 ) extending in the longitudinal direction. 
     
     
         6 . A lattice support structure in accordance with  claim 1 , wherein the connecting lattice bars ( 20 ,  30 ,  50 ) are connected pivotably and/or displaceably to the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure. 
     
     
         7 . A lattice support structure in accordance with  claim 1 , wherein the connecting lattice bars ( 20 ,  30 ,  50 ) are disposed in the outer surface or outer surfaces of the lattice support structure. 
     
     
         8 . A lattice support structure in accordance with  claim 1 , wherein the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction of the lattice support structure form the outer edges of the lattice support structure. 
     
     
         9 . A lattice support structure in accordance with  claim 1 , wherein the lattice support structure has a structure of lattice bars ( 10 ,  10 ′) extending in the longitudinal direction which repeats in the longitudinal direction as well as connecting lattice bars ( 20 ,  30 ,  50 ). 
     
     
         10 . A lattice support structure in accordance with  claim 1 , wherein at least some of the connecting lattice bars ( 20 ,  30 ,  50 ) are formed by connection struts ( 50 ) which extend in the outwardly folded state of the lattice support structure perpendicular to the longitudinal direction of the lattice support structure from one to another of the lattice bars ( 10 ) extending in the longitudinal direction of the lattice support structure. 
     
     
         11 . A lattice support structure in accordance with  claim 1 , wherein the connection struts ( 50 ) have at least one joint by which they can be adjusted between an inwardly folded state and an outwardly folded state. 
     
     
         12 . A lattice support structure in accordance with  claim 1 , wherein the connecting lattice bars ( 20 ,  30 ,  50 ) are at least partly connected to one another. 
     
     
         13 . A lattice support structure in accordance with  claim 1 , wherein locking means are provided by which the connecting lattice bars ( 20 ,  30 ,  50 ) can be fixed in at least one position. 
     
     
         14 . A lattice support structure in accordance with  claim 1 , wherein means are provided which act on at least two of the connecting lattice bars ( 20 ,  30 ,  50 ) or of the lattice bars ( 10 ,  10 ′) extending in the longitudinal direction such that the spacing of the lattice bars ( 10 , 10 ′,  20 ,  30 ,  50 ) can be increased or decreased relative to one another, whereby the lattice support structure folds outwardly or folds inwardly. 
     
     
         15 . A lattice support structure in accordance with  claim 1 , wherein at least two of the connecting lattice bars ( 20 ,  30 ) extend cross-ways and are connected at their intersection point to a further one of the connecting lattice bars ( 50 ). 
     
     
         16 . A lattice support structure in accordance with  claim 1 , wherein at least two of the connecting lattice bars ( 20 ,  30 ) extend cross-ways and are connected at their intersection point to a further one of the connecting lattice bars ( 50 ); and the intersection point is connected to the joint of the further connecting lattice bar ( 50 ). 
     
     
         17 . A lattice support structure with structures which can be spread apart, in particular a lattice support structure in accordance with  claim 1 , wherein the lattice support structure has pivotably arranged lattice bars, the pivotable connection is made such that one of the parts pivotably connected to one another has a projection; and the other one of the pivotably connected parts has a groove which is bounded on three sides by walls and in which the projection of the other part is pivotably received. 
     
     
         18 . A lattice support structure in accordance with  claim 17 , wherein the lattice bars have the projection at their one end region and the groove at their other end; or the lattice bars have grooves or projections at their two end regions. 
     
     
         19 . A lattice support structure in accordance with  claim 17 , wherein a braking device is provided which the lattice bars fix in a specific pivot position. 
     
     
         20 . A lattice support structure in accordance with  claim 19 , wherein the braking device is made as a drum brake or as a shoe brake. 
     
     
         21 . A lattice support structure in accordance with  claim 20 , wherein the shoe brake is arranged at one of the parts pivotably connected to one another and has two projections which, on the actuation of the brake, simultaneous come into contact with the other of the parts pivotably connected with one another.