Thermal detector and method of producing the same

专利名称：Thermal detector and method of producing

the same

发明人：Isao Asano,Yoshimi Kawabata申请号：US08/0058申请日：19930115公开号：US025582A公开日：19950620

摘要：A thermal detector comprises: an element unit 11 having a heat sensor element1 such as a thermistor sealed into the terminal end portion thereof, for electricallydetecting temperature change; a detector body integrating by means of plastic-forminga pair of fitting members 12 for electrically and mechanically coupling to a detector base;a circuit board 16 mounted on a circuit accommodation portion 15 inside the detectorbody; and a back side cover 17 for closing and sealing the circuit accommodation portion15 from the reverse side thereof. Thereby, airtightness of the circuit accommodationportion is secured and it is simplified to make possible automatization thereof. Also,positioning projections 110, 112, 114 and positioning grooves 111, 113, 115 are provided.By respectively fitting these, positioning of the circuit board 16 to a molded body 14, theback side cover 17 to the reverse side of the molded body 14 and the outer cover 13 tothe lower side of the molded body 14 is effected. The back side cover 17, the circuitboard 16, the molded body 14 and the outer cover 13 in such positioned state are fixedinto one body by means of screwing of the fitting members 12. Thereby positioning of aplurality of component parts at the time of assembling is simplified to achieve animprovement in working efficiency and assembling precision.

申请人：HOCHIKI KABUSHIKI KAISHA

代理人：Max Fogiel

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