| 摘要 |
<p>Two parallel rigid rails (18) guiding the conductors (24) are joined to insulating caps (19) acting as spacer-pieces and are mounted under a support surface (17). The flat housings (22) of the projectors (25) occupy the space between the pair of rails (18). The projectors are locked between the conductors by means of sprung arms (31) running laterally beside their housings, and are released by being movable along the rails, with contact studs resting against the conductors. The conductors are held in grooves (21) in the rails. The sprung arms are positively locked by holder claws (34) on the housings which are the same height as the rails.</p> |
