| 摘要 |
Two elongated frame sections (1, 2) are joined in a mitre corner connection, with each frame section having a mitre cut end surface adapted to abut the corresponding mitre cut end surface of the other section, each mitre cut end surface having upper (9, 10) and lower mitre edges running from the inside of the mitre corner to the outside, by providing each frame section with an elongated groove (5, 6) running substantially parallel to one of its upper (9, 10) or lower mitre edges, with a first groove portion with a side open to the mitre cut end surface and aligned with the corresponding open side of the first portion of the corresponding groove in the other frame section, the elongated groove in each frame section further having a second portion (5', 5'', 6', 6'') separated from the mitre cut end surface by a web (11, 11', 12, 12') of material and each elongated groove having an open end, and inserting a clamping member 7 into the first and second portions of the grooves of both sections via their open ends to engage frictionally in the grooves (5, 6) and to positively clamp together the web portions (11, 11', 12, 12'). <IMAGE> |
