| 摘要 |
A coupling piece for frame-works, panels or the like, adapted to be connected in a corner thereof said coupling piece comprising two legs, at least one thereof being provided with a recess having a coupling pin directed parallel to a border edge of said leg for coupling, by means of a coupling element, said coupling piece with another coupling piece having a leg positioned against the corresponding leg of said first coupling piece so that a rotational movement around said pin is possible, a border portion of said legs being rounded around the pin in question in such a manner that the roundings of both mutually coupled legs are allowed to roll around each other. According to the invention the coupling element (13) consists of two pins (15, 16) interconnected by a bridge (14), the leg (2) in question is provided with two bores (9, 10) which are symmetrical in respect of the longitudinal median plane and is open into the recess (7) in question, in which bores (9, 10) a pin (15, 16) of a coupling element (13) fits in a slidable way, the interaxial distance of the pins (15, 16) of a coupling element (13) being substantially equal to the interaxial distance of said bores (9, 10) and the rounding (11) consists of two parts having an axis coinciding with the axis of the adjacent bore (9, 10), and having radius which is substantially equal to half the interaxial distance of said bores (9, 10), all this in such a manner that, when interconnecting two coupling pieces (1) by means of such a coupling element (13), a rotation around the axes of both pins (15, 16) with a rolling movement of the roundings (11) in question on each other is allowed. |
