| 摘要 |
<p>The present invention concerns one-piece fitting for corner assembling parts of a frame, having two arms being symmetric compared to the corner's diagonal plane and being mutually perpendicular, each arm having two protrusions to respectively fit into two corresponding predrilled holes (5) in respective frame part (4), characterized in, the two protrusions (1 and 2) of each fitting half being an inner (fig. 1), shorter boss (1) and an outer (fig. 1) longer pin (2), respectively, the pin's (2) length being optimised compared to the thickness of the preferable thicker section of the frame part, in the bosses (1) and the pins (2) are extending from a rectangular pattern's corners to the same side of the fitting, both the two bosses (1) and the two pins (2) having exactly the same distance from the corner's diagonal plane, and in the pins/bosses having their free ends chamfered.</p> |
