| 摘要 |
PURPOSE:To simplify and miniaturize a structure and to reduce the wt. thereof while dispensing with adjustment and reducing cost, by mounting a casing member having a groove having a recessed cross-sectional area formed to the interior thereof, first and second conductors and a movable contact element electrically bridging said conductors. CONSTITUTION:A first conductor 8a comprising an electric resistor or a good conductor and a second conductor 8b comprising an electric resistor are arranged to a casing member having a groove 9a having a recessed cross-sectional area formed to the interior thereof in a circular or circular arc shape and a movable contact element 10 comprising mercury, which has an almost spherical shape and moves toward a lowermost position according to gravity in the groove 9 and electrically bridges the first and second conductors 8a, 8b at one places thereof to each other, is mounted. The circle or circular arc formed by the groove 9 is constituted so that the center axis of the radius of curvature thereof crosses a vertical axis at right angles. By this mechanism, the structure is simplified, miniaturized and reduced in its wt. while adjustment is dispensed with and cost can be reduced. |
