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.

Abstract: A liquid level detection apparatus of the present invention includes contacts provided at a distal end portion of a contact plate, and resistance plates which are formed on a wiring board, and have respective conductor portions over which the contacts can slide, respectively, so as to detect a liquid level. Conductor patterns other than the conductor portions are formed on those regions of the wiring board which the contacts at the distal end portion of the contact plate contact during the time when an arm holder is mounted on the wiring board.

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.