| 摘要 |
A novel temperature sensor having a radial-type thermistor and a method of fabrication thereof are disclosed. A pair of electrode wires 22 are embedded in a spaced relation from each other substantially in parallel to the axis 21a of a cylindrical thermistor 21, and have an end 22a thereof led out toward an end 21b of the cylinder of the thermistor 21. A pair of core wires (signal lines) 31 arranged in spaced relation from each other substantially in parallel to the cylinder axis 21a are led out from the outer cylinder 33 of a two-core pipe 30 and are connected to an end 22a of each electrode wire 22. The wires 22, 31 are overlapped in such a manner that the diagonal K1 connecting the electrode wires 22 crosses the diagonal K2 connecting the signal lines 31 on the cylinder axis 21a, and coupled to each other by laser welding. In this way, the rod-like electrode wire pair led out of the thermistor in the same direction is connected to the signal line pair, thus securing the coupling reliability between the electrode wires and the signal lines while at the same time reducing the size of the temperature detecting portion.
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