H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 37/54 (2006.01)
Patent
CA 2742715
A protective device of three-phase motor comprises a protrusion (35) provided in a housing (22) constituting an enclosed container (21), three conductive terminal pins (26) secured airtightly to a metal plate (23) constituting the enclosed container (21), three fixed contacts (27) bonded to the conductive terminal pin (26), a thermal response plate (32) drawn into the shape of a plate and reversing the curving direction at a predetermined temperature, three movable contacts (33) bonded to the thermal response plate (32) and constituting three pairs of opening/closing contact along with the fixed contacts (27), and a resilient member (34) for clamping the central portion of the thermal response plate (32) between the protrusion (35) and urging the thermal response plate (32) in the direction receding from the fixed contact (27).
La présente invention concerne un dispositif de protection de moteur triphasé comportant une protubérance (35) prévu dans un boîtier (22) constituant un contenant fermé (21), trois broches-bornes conductrices 26) fixées de manière étanche à une plaque métallique (23) constituant le contenant fermé (21), trois contacts fixes (27) reliés à la broche-borne (26), une plaque de réponse thermique (32) conçue sous la forme dun plaque et inversant la direction incurvée à une température prédéterminée, trois contacts mobiles (33) reliés à la plaque de réponse thermique (32) et constituant trois paires de contact douverture/de fermeture conjointement avec les contacts fixes (27), et un organe élastique (34) pour serrer la partie centrale de la plaque de réponse thermique (32) entre la protubérance (35) et sollicitant la plaque de réponse thermique (32) dans la direction de retour depuis le contact fixe (27).
Marks & Clerk
Ubukata Industries Co. Ltd.
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