| 摘要 |
A device for connecting a control mechanism to an end of a support arm system with mounting screws that have screwheads projecting from the control mechanism and that can be inserted vertically and up into keyhole type screw receptacles of the support arm system. The mounting screws can be temporarily held in the holding slots of the screw receptacles by horizontal displacement and fixed in the holding position by rotation. According to this invention, if a vertical lowering of the mounting screws and insertion of the screwheads into securing receptacles at the end of the holding slots of the screw receptacles are performed after horizontal displacement of the mounting screws, which prevents horizontal displacement of the mounting screws from the holding position, then the set holding position is secured so that unintentional release of the control mechanism from the support arm system is reliably prevented.
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