Electric device and electric device manufacturing method

A method for manufacturing an electric device including a case, an electric component that is provided in the case and has a main body section and a lead terminal extending from the main body section, the main body section being supported on the case, and a circuit board that is provided in the case and has a connecting hole through which the lead terminal is inserted, the method comprising:

• a positioning step of preparing a guide member having a guide hole and positioning the guide hole relative to the connecting hole;
• a terminal insertion step of guiding the lead terminal with the guide hole and inserting the lead terminal into the connecting hole after the positioning step;
• a supporting step of attaching the main body section to the case and supporting the main body section on the case;
• and
• a board placement step of placing the circuit board in the case after the positioning step, wherein
• the case includes a housing recess that is recessed so as to accommodate the main body section and open on a side on which the lead terminal extends from the main body section,
• in the board placement step, the circuit board is placed in the case to cover the opening,
• in the supporting step,
• a movement allowing member that allows movement of the main body section inside the housing recess is interposed between an inner surface of the housing recess and the main body section,
• the main body section is supported on the case via the movement allowing member,
• the supporting step includes an injection step of injecting a hardening resin having fluidity between the inner surface of the recess and the main body section, and a hardening step of hardening the hardening resin after the injection step, and
• the hardening resin is used to function as the movement allowing member after the injection step and before the hardening step.