Apparatus for detecting liquid level

Abstract

In an apparatus for detecting a liquid level, a sliding arm is supported on the resistance plate so as to pivot thereon in accordance with the liquid level. A plurality of first conductive segments is arranged on the resistance plate in a pivoting direction of the sliding arm. Adjacent ones of the first conductive segments are connected by resistive elements respectively. A plurality of second conductive segments are electrically connected to each other, and arranged on the resistance plate in the pivoting direction. A first contact part is provided on the sliding arm, and slides on the first conductive segments in accordance with a pivoting movement of the sliding arm. A second contact part is provided on the sliding arm, and slides on the second conductive segments in accordance with the pivoting movement of the sliding arm. The first conductive segments and the second conductive segments are arranged such that a first timing, at which the first contact part is brought into contact with one of the first conductive segment, is synchronized with a second timing, at which the second contact part is brought into contact with one of the second conductive segments, while a third timing, at which the first contact part is detached from the one first conductive segment, is synchronized with a fourth timing, at which the second contact part is detached from the one second conductive segment.