Ngk Spark Plug Company, Limited

Hiroaki Nakanishi

Seiji Oya

Hiroshi Watanabe

Yasuyuki Okimura

Shinji Ban

Tomoki Yamaguchi

Seiya Matsuda

In a manufacturing method for a thermistor element () including: a thermistor portion () which is a sintered body formed from a thermistor material; and a pair of electrode wires () which are embedded in the thermistor portion () and at least one end portion of each of the electrode wires projects at an outer side of the thermistor portion (), the resistance value of the thermistor element () is adjusted by performing a removal processing of removing a part of the thermistor portion ().

Thermistor element and manufacturing method therefor

In a temperature sensor, two seal members seal the open opposite ends of a cladding member (a forward end and a rear end), so that water absorption by an insulator of a sheath member can be restrained. The seal members are formed to have an insulation resistance equal to that of a conductor-fixing material. Therefore, even when the temperature sensor is used in a high-temperature environment, the insulation performance of the seal members does not become lower than the insulation performance of the conductor-fixing material, so that the formation of a leakage current path can be suppressed. According to the temperature sensor, the electrical property of a temperature sensitive element can be sensed accurately, and a reduction in the accuracy of temperature sensing can be restrained.

Temperature sensor

Growing community of inventors

Kasugai, Japan

Hiroaki Nakanishi