| 摘要 |
PURPOSE:To improve reliability of connection, and provide a conductive liquid switch for a printed circuit which is excellent in stability, by providing connection between mutual printed circuits arranged on an insulated base member via a conductive liquid. CONSTITUTION:A printed circuit 1 and a printed circuit 11 are provided in an insulated base member 2 in two layers, upper and lower, a through-hole 21 is bored in the insulated base member 2, and connection ends of the printed circuits 1, 11 to be connected to each other are exposed in the same hole surface. Conductive liquid 3 is contained in a nonconductive condition at a lower part of the through-hole 21 which is maintained vertical. An up and down movement means 5 to displace a liquid surface level 33 of the conductive liquid 3 up and down to selectively and stably maintain the level at an upper or a lower position, and to switch the position upon occasion is provided. The liquid surface level 33 is moved up and down by the up and down movement means 5, thereby the exposed connection terminals of the printed circuits 1, 11 are shortcircuited or opened. |
