CONNECTION UNIT FOR RODS IN THREE-DIMENSIONAL FRAMEWORK Russian patent published in 1998 - IPC

FIELD: construction engineering. SUBSTANCE: this is used for joining rods in three-dimensional frameworks of buildings and structures. Connection unit is made up of tubular rods. Secured in ends of rods are spacer shells. Inserted through holes in aforesaid shells are bolts having pair of interperpendicular holes with circular bore made between them. Bolts are provided with guide bushes having internal shoulder and longitudinal blind slot. Installed in circular bore of bolts is locking ring. By means of thread, bolts are joined with connection unit through diameter D. In this case, guide bushes are provided with single-side cone chamfer with diameter d of small base. Relation is d/D ≤ sin ϕ/2,, where ϕ - angle between rods in connection unit. Aforesaid configuration improves aesthetic characteristics of connection unit and its reliability at minimal number of components. EFFECT: higher efficiency. 1 dwg