Patent ID: 9506799
Filing Date: 2016-11-29
CPC Classification: G01F

Claim Text:
1. A liquid level detection device comprising: a holder that has a magnet inside, and rotates in accordance with displacement of a float floating on liquid that is a measuring object of liquid level; and a main body unit that comprises a magnetic detection element for detecting a change in a magnetic pole accompanying rotation of the magnet, a capacitor, and a terminal that is electrically connected to the magnetic detection element and the capacitor, wherein the main body unit comprises a primary molded body that is formed by insertion molding the terminal, and a secondary molded body that is formed by insertion molding the primary molded body provided with the capacitor and the magnetic detection element, the primary molded body comprises a positioning means for positioning the primary molded body at a predetermined position when molding the secondary molded body, and a first protrusion ring that is a circular protrusion surrounding the positioning means, and an apex of the first protrusion ring is welded to a part that is molded when molding the secondary molded body, wherein the positioning means is a in hole, into which a positioning in is inserted, and an inside slope of the first protrusion ring is directly connected to the peripheral edge of the in hole.