Electrical installation apparatus in particular apparatus consisting of several to communicate with each other decorated building elements

摘要

1. Electrical apparatus, especially installation apparatus, such as a signal lamp, switch gear, transformer or the like, for incorporation onto a mounting plate which comprises several elements (10, 11, 12, 13; 16, 17, 18), which are detachably connected by lateral resilient webs (10c; 12b) lying opposite each other, which can be seen and actuated from outside, on the one side, and by stop points (10b, 11b) on the other side, over which the webs engage from outside, the webs (10c; 12b) being constructed with a flat surface on the external sides, characterised by the fact that the webs (9c, 9d; 10c; 12b; 17c) reveal recesses (10d) into which stop keys (10b, 11b) engage, that a further element is provided as an intermediate piece, which, towards the adjacent element, is provided with webs (9c), and towards the mounting side, with fastening spigots (9a, 17b), that the fastening spigots are secured in holes (8a) of a rail (8) common to several devices, that the rail is held at its ends on stop points of the mounting plate, and that these stop points reveal hollow spigots (5) with springs bent at right angles.