| 摘要 |
In a framework made of separably connected profile bars, some of the bars have longitudinal slots and others have hollow sections for engagement of a coupling member in their face ends. The coupling member consists of a bearing housing with an upwardly oriented wedge surface and a holding member with a matching inclined surface which is forced against the wedge surface by a spring force. The holding member can be moved in a longitudinal direction by an eccentric pin arranged transversely to the profile bar and located with its actuating end in a cross hole of the profile bar so that a coupling hook at the end of the holding member is movable both longitudinally relative to stationary projections of the bearing housing as well as laterally due to the rising movement of the matching inclined surface along the wedge surface. In order to obtain a reliable and easy-to-handle coupling member including the smallest possible number of detail parts, a resilient tongue is cut out from a sheet metal strip forming the holding member and bent so that an end of the tongue bears against an inner wall of the bearing housing and slides in a longitudinal guide. The wedge surface extends between the two coupling projections, and an offset of the holding member engages behind the wedge surface, locating the eccentric pin in a rear wall cut-out of the bearing housing. In addition, the resilient tongue enables the eccentric pin to be pressed in, similar to a pushbutton, so that in the initial position the actuating end of the pin is engaged in a cross hole of the profile bar. |
