Profiled Bar for Frames and Relative Frame

Abstract

The invention relates to a profiled bar 4 with a “T” section comprising a rib 24 and a plate 28 . The profiled bar 4 has, on at least one end 12, 16 , an attachment element 20 suitable for engaging with a further profiled bar 4 ″. The rib comprises at least one coupling aperture shaped to house said attachment element 20 , which comprises a base 40 for fixing to the rib, projecting at least partially from the profiled bar 4 with one free end 44 , and a tongue 48 flexibly elastic and coupled to the fixing base. The tongue 48 is obtained through shearing and bending of a portion of the fixing base 40 , so as to form an angle of incidence with the fixing base 40 itself and is provided with a pair of recesses 51, 52 which define an attachment head 50 . The coupling aperture 28 defines a first pair of projections 31, 32 suitable for engaging with the recesses 51, 52 to hold the attachment head 50 to the rib, said projections 31, 32 being positioned in opposite positions to a longitudinal centre line plane L-L of the rib.

1 . Profiled bar ( 4 , 4 ′, 4 ″), in particular for frames ( 8 ), having a main longitudinal extension (X-X) from a first and a second end ( 12 , 16 ), the profiled bar ( 4 , 4 ′, 4 ″) having, on at least one of said ends ( 12 , 16 ), an attachment element ( 20 ) suitable for engaging with a further profiled bar ( 4 ″), and comprising a rib ( 24 ) and a plate ( 28 ) positioned perpendicular to the rib ( 24 ) so as to form together a ‘T’ section, the rib ( 24 ) comprising at least one coupling aperture ( 36 ) shaped to house said attachment element ( 20 ), the coupling aperture ( 36 ) being positioned between said first and second end ( 12 , 16 ), wherein
 the attachment element ( 20 ) comprises a base ( 40 ) for fixing to the rib ( 24 ), which projects at least partially from the profiled bar ( 4 , 4 ′, 4 ″) with one free end ( 44 ), and a tongue ( 48 ) flexibly elastic and coupled to the fixing base ( 40 ), the tongue ( 48 ) being obtained through shearing and bending of a portion of the fixing base ( 40 ), so as to form an angle of incidence with the fixing base ( 40 ) itself, the tongue ( 48 ) being provided with a pair of recesses ( 51 ,  52 ) defining an attachment head ( 50 ), the coupling aperture ( 28 ) defining a first pair of projections ( 31 ,  32 ) suitable for engaging with the recesses ( 51 ,  52 ) to hold the attachment head ( 50 ) to the rib  24 , said projections ( 31 ,  32 ) being positioned in opposite positions to a longitudinal centre line plane (L-L) of the rib ( 24 ). 
 
     
     
         2 . Profiled bar according to  claim 1 , wherein said projections ( 31 ,  32 ) are positioned symmetrically to the longitudinal centre line plane (L-L) of the rib ( 24 ). 
     
     
         3 . Profiled bar ( 4 ) according to  claim 1 , wherein the coupling aperture ( 36 ) has a first pair of guides ( 60 ) positioned on opposite sides to the longitudinal centre line plane (L-L) of the rib ( 24 ) and said attachment element ( 20 ) has a first pair of tabs ( 64 ) jutting out from the fixing base ( 40 ), said first guides ( 60 ) sliding in conjunction with the first tabs ( 64 ) to guide the coupling of the attachment element ( 20 ). 
     
     
         4 . Profiled bar ( 4 ) according to  claim 1 , wherein the coupling aperture defines at least a second pair of projections ( 33 ,  34 ), opposite the first pair of projections ( 31 ,  32 ) in relation to a centre line plane (M-M) of the aperture, orthogonal to the main longitudinal extension (X-X), to enable the contemporary holding of two attachment elements ( 20 ) of two separate profiled bars ( 4 ′,  4 ″). 
     
     
         5 . Profiled bar ( 4 ) according to  claim 4 , wherein said centre line plane (M-M) is also a plane of symmetry for the coupling aperture ( 36 ). 
     
     
         6 . Profiled bar ( 4 ) according to  claim 3 , wherein the coupling aperture ( 36 ) has a second pair of guides ( 72 ) positioned on opposite sides in relation to the longitudinal centre line plane (L-L) of the rib ( 24 ), to permit the guided coupling of two attachment elements ( 20 ) of two separate profiled bars ( 4 ′, 4 ″). 
     
     
         7 . Profiled bar ( 4 ) according to  claim 1 , wherein the fixing base ( 40 ) is attached to the rib ( 24 ) by rivets, welding, gluing and/or threaded coupling devices. 
     
     
         8 . Profiled bar ( 4 ) according to  claim 1 , wherein the free end ( 44 ) of the fixing base ( 40 ) has a pair of shoulders ( 76 ) which define an end stop in the insertion of the attachment element ( 20 ) inside the coupling aperture ( 36 ), said shoulders ( 76 ) abutting on the rib ( 24 ). 
     
     
         9 . Profiled bar ( 4 ) according to  claim 1 , wherein the free end ( 44 ) has a pair of draft bevels ( 80 ) to facilitate the insertion of the attachment element ( 20 ) inside the coupling aperture ( 36 ). 
     
     
         10 . Profiled bar ( 4 ) according to  claim 1 , wherein said rib ( 24 ), on the side opposite the plate ( 28 ), comprises a longitudinal stiffening element ( 42 ). 
     
     
         11 . Frame ( 8 ), in particular for the support of suspended ceilings, comprising a plurality of profiled bars ( 4 , 4 ′, 4 ″) according to  claim 1 , wherein said profiled bars ( 4 , 4 ′, 4 ″) are mechanically coupled to each other so that the attachment element ( 20 ) of a first profiled bar ( 4 ′) couples into the coupling aperture ( 36 ) of a second profiled bar ( 4 ″).