Sensor and manufacturing method thereof

A method of manufacturing a sensor which generally comprises a thermistor element for generating an electric signal, a metal tube having one opened end and another closed end, into which the thermistor element is inserted, a plurality of electrode wires joined to the thermistor element so as to project outward over the opened end of the metal tube, a plurality of lead wires, which are covered by covering tubes with uncovered portions remaining and joined to the electrode wires, respectively, at the uncovered portions, and a housing having an inner hollow space into which the electrode wires and the lead wires are accommodated together with a resin as a filler,

• said sensor manufacturing method comprising the steps of;
• preparing an insulating case provided with a partition section for separating the joined portions of the electrode wires and the lead wires from each other, the respective electrode wires from each other and the respective lead wires from each other;
• inserting the opened end of the metal tube, the electrode wires extending therefrom and portions of the covered lead wires and uncovered portions thereof into the insulating case;
• joining the electrode wires and the lead wires to each other;
• filling the insulating case with an insulating material;
• inserting thereafter the insulating case in the housing;
• and
• filling resin in the hollow space of the housing.