| 摘要 |
<p>The joint for tubular profiled parts forming a frame has two identical parts (4') fitting on to the angle formed by the profile. A hole (5) houses a screw (6) which is headless. The two parts end in lugs (7') at right angles to each other, with feet (8') inclined at 45 deg.). Each part has another opening (9') housing a plug (10') which is blocked by a shoulder (12') in opening (19') in the profiles. Each part has also a groove (15') which houses a conical srping (16'). The other end of the spring presses in a part conical hole in the base of the plug (10').</p> |
