| 摘要 |
<p>1. Needle contact element for a safety contact rail. 2.1 Known safety contact rails are produced, for example, from a hollow rubber profile and a rib resembling a knife edge, arranged in the hollow rubber profile, both having electrically conductive zones. In known versions, these zones are connected via rivets, clips or screws to switching lines which transmit electrical switching pulses during the deformation of the hollow rubber profile and the connection of the hollow rubber profile and rib caused thereby. The known connection devices of switching lines and electrically conductive zones have not proved sufficiently reliable. 2.2 According to the invention, this disadvantage is avoided in that there can be inserted into the electrically conductive zones of the rib 2 and of the hollow rubber profile 1 needle contact elements 10, 11, to which the switching lines 8, 9 can be fastened, for example via a screw-type clamping device. At the same time, the needle contact elements have increasing conicity towards their free end and a needle tip 18 which forms an angle of approximately 70 DEG . <IMAGE></p> |
