| 摘要 |
<p>The element (28) is designed as a solid metal angle with insertion openings positioned at the bottom of rectangular recesses located at the surfaces of both outer ends. A plug element (62) with a rectangular central projection protruding from the front surface is provided with an extension in the shape of a twin cone with its narrow ends touching each other is inserted into the open end of a box profile (22, 24, 26). The plug element (62) and the corner element (28) are joined by inserting the twin cone into one of the openings and securing it with two headless, slightly tapered screws inserted from the sides of the element (28).</p> |
