| 摘要 |
A switching device for providing electrical making or breaking at a cross point (Fig. 7) among a plurality of cross points, which are arranged in a connection matrix with a plurality of incoming conductors (x) and a plurality of outgoing conductors (y) to each intersection point. An incoming conductor (x) and an outgoing conductor form a first and a second contact surface (61a and 51, 52) spaced from each other. The contact, which can be electrically conductive or non-conductive, is achieved by one or two balls (1, 2) which are moved with the aid of control means, e.g. a pin (S12). In one embodiment for providing contact between a plurality of incoming wire pairs (x, a, b) and a plurality of outgoing wire pairs (y, a, b) the balls (1-4) are arranged in pairs in a plurality of cavities (H1-H4) in a connection block (K) and are moved to their respective positions with the aid of the pins and rods (9) in the cavities. An operating means (M) with lifting plates (L1, L2) and combination plates (K1-K5, K2-K6) for selecting what balls which are to be moved by the pins are described. |
