Connection device for light steel frames

Abstract

A connection device of light steel frames comprises a longitudinal frame and a transversal frame. The longitudinal frame is bent to be formed with a first rib. Each first rib has a plurality of inserting holes and two sides of the first rib having respective supporting pieces. The transversal frame is bent to be formed with a second rib. The two sides of the second rib have respective crossing pieces. In one application, each supporting piece of the longitudinal frame is inclined upwards. Each end of the first rib is formed with an inclined slot. Each of two ends of each crossing piece is chamfered to form an inclined corner. The inclined slot is formed by two edges. Moreover, in another application, each supporting piece of the longitudinal frame is vertical to the first rib and the two edges of the slot are parallel.

What is claimed is:  
     
         1 . A connection device of light steel frames comprising a longitudinal frame and a transversal frame; the longitudinal frame being bent to be formed with a first rib; each first rib having a plurality of inserting holes and two sides of the first rib having respective supporting pieces; the transversal frame being bent to be formed with a second rib; the two sides of the second rib having respective crossing pieces; the transversal frame being inserted into the inserting hole of the longitudinal frame; characterized in that: 
 each supporting piece of the longitudinal frame is inclined upwards along two sides of the longitudinal frame; each end of the first rib is formed with an inclined slot and between the two crossing pieces of the transversal frame; each of two ends of each crossing piece is chamfered to form an inclined corner; the inclined slot has two edges; the two edges contact with one another at ones ends thereof;    wherein when the transversal frame and longitudinal frame are connected; the supporting piece of the longitudinal frame is inserted into the inserting hole of the transversal frame; the first rib resists against the second rib and the supporting piece is inserted into the inclined slot along the inclined edge of the slot; the crossing piece of the transversal frame resists against the supporting piece; thereby, the two ends of the transversal frame are clamped and confined by the longitudinal frame so that the transversal frame will not shift away.    
     
     
         2 . A connection device of light steel frames comprising a longitudinal frame and a transversal frame; the longitudinal frame being bent to be formed with a first rib; each first rib having a plurality of inserting holes and two sides of the first rib having respective supporting pieces; the transversal frame being bent to be formed with a second rib; the two sides of the second rib having respective crossing pieces; the transversal frame being inserted into the inserting hole of the longitudinal frame; characterized in that: 
 each supporting piece of the longitudinal frame is vertical to the first rib; each end of the first rib is formed with a slot between the two crossing pieces of the transversal frame; two edges of the slot are parallel; each of two ends of each crossing piece is chamfered to form an inclined corner.    
     
     
         3 . The connection device of light steel frames as claim in  claim 1 , wherein each of the supporting piece is enclosed by a first cover, and each of the crossing piece is enclosed by a second cover.  
     
     
         4 . The connection device of light steel frames as claim in  claim 2 , wherein each of the supporting piece is enclosed by a first cover, and each of the crossing piece is enclosed by a second cover.