| 摘要 |
A mechanical coupling angle joint for metal concave beams (profiles) (17, 18) characterised in that it consists of two identical parts of a metallic angle joint with a main body (1) and lid with grooves (5) and apertures (13) on the inside, wherein, on the edge of the main body, a screw (4) and two springs (11) are moving, displacing simultaneously and by both sides pellets (6) which move in a groove (5) ending in a slanted plane (7), the said pellets (6) reverse the direction of the screw (4) and push at the same time the two special teeth (8) which move, at a first step, diagonally out of the main body (1) of the mechanical angle, enter the apertures (19) of the two concave beams (17, 18) and tighten them to each other and, then, move in a parallel way with the profiles (17, 18), thus achieving clamping of the profiles (17, 18) at the angle of the frame, becoming an appurtance stabilizing and joining two concave beams (17, 18) powerfully at a 90~ angle aligning them simultaneously. |
