Patent ID: 7745760

Claim:
A method of manufacturing a soldering iron provided with a soldering tip that melts solder at a distal end, comprising the steps of: providing a heater insertion fit portion which is a lengthwise cavity in said soldering tip and open at a proximal end of said soldering tip; providing a temperature sensor insertion fit portion in said soldering tip, the temperature sensor insertion fit portion being a lengthwise cavity in communication with a distal end of the heater insertion fit portion, and having an internal widthwise dimension, which is smaller than that of the heater insertion fit portion; providing a hollow elongate member in the heater insertion fit portion, which has an outer widthwise dimension larger than the internal widthwise dimension of the temperature sensor insertion fit portion; providing a hollow carrier portion so as to pass through the hollow elongate member and project from a distal end of the hollow elongate member into the temperature sensor insertion fit portion; inserting a heater into the heater insertion fit portion so as to be disposed between an outer surface of the hollow elongate member and an inner surface of the heater insertion fit portion; and providing a temperature sensor so as to pass through the hollow elongate member and contact with the inner surface of the temperature sensor insertion fit portion.