Ngk Spark Plug Company, Limited

Akio Mori

Tatsuya Suzuki

Seiji Oya

Toshiya Oya

Toshinori Nishi

A temperature sensor includes a temperature sensitive element, a sheath portion, a surrounding portion, and a holding member. This temperature sensor has a void formed forward of a temperature sensitive body. When the void is projected in an axial direction of the surrounding portion from a forward end side of the surrounding portion, the void contains at least a forward end surface of the temperature sensitive body.

Temperature sensor with improved sheath

A sensor includes a sensor element and a conductive wire. The sensing element includes a sensing portion and a terminal wire extending from the sensing portion. The sensing portion has an electrical characteristic that changes in accordance with a change in an atmosphere. The conductive wire is for communicating an electrical signal from the sensor element. The conductive wire includes a plurality of conductors twisted together. The terminal wire and the conductive wire are arranged in a longitudinal direction of the sensor and are connected to each other by welding. The conductive wire includes a first weld portion formed by integrating the plurality of conductors in the longitudinal direction by welding. The terminal wire and the conductive wire are connected to each other through a second weld portion, and the second weld portion is formed only in a region longitudinally overlapping the first weld portion.

Sensor and method of producing the same

A sensor and method of manufacturing the same. A plurality of conductors () constituting an electricity conduction wire () are fused and joined for unification by a first resistance welding operation. Subsequently, a terminal wire () and the electricity conduction wire () are caused to overlap in the axial direction and connected by a second resistance welding operation.

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Konan, Japan

Akio Mori