Flat resistance for blower control unit of automobile air...

H - Electricity – 01 – C

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338/21

H01C 13/02 (2006.01) H01C 13/00 (2006.01)

Patent

CA 2000290

A flat resistance for a blower control unit of an automobile air conditioner, and a blower control unit using the same. The flat resistance includes: a porcelain enameled metallic substrate including a flat head portion, having an edge and one surface, and parallel terminal supporting portions projecting outwardly from the edge of the head; a resistance circuit printed on the one surface of the head portion, the resistance circuit including a plurality of resistances electrically connected in series; a temperature fuse, interposed in the resistance circuit, for being tripped to break the resistance circuit when the porcelain enameled metallic substrate becomes overheated; and terminals, printed on both the head portion and the terminal supporting portions, each terminal being connected to one end of a corresponding one of the resistances.

ésistance plate adaptée au mécanisme de commande d'un ventilateur de climatiseur d'automobile, et mécanisme de commande de ventilateur correspondant à cette résistance. La résistance plate comprend les éléments suivants : un substrat métallique revêtu d'émail vitrifié comportant une partie supérieure plate, une arête sur une surface et des pièces parallèles d'appui des bornes faisant saillie vers l'extérieur au niveau du bord de la partie supérieure; un circuit de résistance imprimé muni d'un certain nombre de résistances reliées en série; un protecteur thermique intercalé dans le circuit de résistance et enclenché de manière à briser le circuit de résistance en cas de surchauffe du substrat métallique revêtu d'émail vitrifié; et des bornes, imprimées à la fois sur la partie supérieure et les pièces d'appui des bornes, chaque borne étant branchée à une extrémité d'une résistance qui lui correspond.

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