Method for manufacturing a liquid-surface detection device

A method for manufacturing a liquid-surface detection device comprising:

• providing a plurality of terminals for outputting an electrical signal corresponding to a detection result from a detecting element portion that is connected to the plurality of terminals, and that is detecting a level of a liquid-surface of a liquid stored in a container, to an outside of the container, and
• an electronic component connected to corresponding one of the plurality of terminals, the electronic component having
• a body portion, and
• a lead portion projecting from the body portion;
• molding a casing that covers the plurality of terminals, the casing having a mounting surface that includes
• a base surface with a planar shape and extending parallel to a direction in which the plurality of terminals extends,
• an extension projecting from the base surface in a direction perpendicular to the direction in which the plurality of terminals extends, the extension further defining a positioning groove, and
• a hole recessed from the base surface towards the plurality of the terminals;
• arranging the lead portion and the body portion of the electronic component after the molding, so that the lead portion is placed in the positioning groove to extend along the base surface, the positioning groove having a clearance from the lead portion, and a curved surface of the body portion of the electronic component projecting toward the mounting surface is held by an edge of the hole;
• and
• after the arranging, connecting the lead portion of the electronic component and the corresponding one of the plurality of terminals.