The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1995
Filed:
Jan. 15, 1993
Isao Asano, Tokyo, JP;
Yoshimi Kawabata, Hachiouji, JP;
Hochiki Kabushiki Kaisha, Tokyo, JP;
Abstract
A thermal detector comprises: an element unit 11 having a heat sensor element 1 such as a thermistor sealed into the terminal end portion thereof, for electrically detecting temperature change; a detector body integrating by means of plastic-forming a 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 detector body; and a back side cover 17 for closing and sealing the circuit accommodation portion 15 from the reverse side thereof. Thereby, airtightness of the circuit accommodation portion 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, the back side cover 17 to the reverse side of the molded body 14 and the outer cover 13 to the lower side of the molded body 14 is effected. The back side cover 17, the circuit board 16, the molded body 14 and the outer cover 13 in such positioned state are fixed into one body by means of screwing of the fitting members 12. Thereby positioning of a plurality of component parts at the time of assembling is simplified to achieve an improvement in working efficiency and assembling precision.