Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

H - Electricity

01

H

H01H 50/54 (2006.01) H01H 33/12 (2006.01) H01H 50/00 (2006.01)

Patent

CA 2529908

Provided is an electromagnetic relay which does not require a braided wire for securing a current capacity of a main contact unit. The electromagnetic relay includes a main contact unit 2A inserted into a power supply path to a load and an arc contact unit 3A connected in parallel to the main contact unit 2A. An auxiliary contact unit 4 is electrically independent of the main contact unit 2A and the arc contact unit 3A. The main contact unit 2A includes a main fixed contact 27 fixed to a frame body 1 and a main contact spring 23 made of a leaf spring and fitted with a main mobile contact 25 which is attached to and detached from the main fixed contact 27. The arc contact unit 3A and the auxiliary contact unit 4 are arranged adjacent to each other. The main contact spring 23 extends in a direction in which the arc contact unit 3A and the auxiliary contact unit 4 are arranged. Therefore, the main contact spring 23 can be formed with a large length in the frame body 1 and the sectional area can be enhanced without increasing a spring constant, thereby not requiring a braided wire.

La présente description porte sur un relais électromagnétique qui ne nécessite pas de fil guipé pour garantir le courant de régime d'un dispositif de contact principal. Le relais électromagnétique comprend un dispositif de contact principal 2A inséré dans un circuit alimentant une charge et un contact d'arc 3A relié en parallèle au dispositif de contact principal 2A. Un contact auxiliaire 4 est électriquement indépendant du dispositif de contact principal 2A et du contact d'arc 3A. Le dispositif de contact principal 2A comporte un plot principal 27 fixé à un cadre 1 et un ressort-porte contact principal 23 comprenant des lames et muni d'un contact mobile principal 25 qui est fixé ou détaché du plot principal 27. Le contact d'arc 3A et le contact auxiliaire 4 sont disposés l'un à côté de l'autre. Le ressort-porte contact principal 23 se déploie dans la direction où sont installés le contact d'arc 3A et le contact auxiliaire 4. Ainsi, le ressort- porte contact principal 23 peut avoir une longueur large dans le cadre 1 et la zone sectionnelle peut être optimisée sans augmenter la constante du ressort, ce qui permet de se passer d'un fil guipé.

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