| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature sensor manufacturing method wherein a temperature sensitive element is reliably arranged at a prescribed location (target arrangement location) in a tubular metal tube having a bottom. SOLUTION: An electrode wire 22 of a thermistor element 2, the temperature sensitive element, is joined to a metal core wire 7 of a sheath member 8 to prepare a temperature sensitive element assembly. The temperature sensitive element assembly is inserted from a rear-end-side opening of a second tubular part 32 having both open ends, a thermistor sintered body 21 is protruded from the tip side of the second tubular part 32 by a prescribed size, and the sheath member 8 and the second tubular part 32 are caulked and fixed. A tip part of the second tubular part 32, to which the temperature sensitive element assembly is assembled, is positioned inside a rear end part 36 of a first tubular part 31 and arranged in such a way as to create an overlapping part 37 of a prescribed size, and both tubular parts are caulked over their circumferential direction. Their overall circumferences are welded by laser. Thereby the temperature sensor 1 is acquired in which the thermistor sintered body 21 is arranged at the target arrangement location in the tubular metal tube 3 having the bottom. COPYRIGHT: (C)2005,JPO&NCIPI
|
