Arc-less electrical connector

H - Electricity – 01 – R

Patent

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Details

H01R 13/66 (2006.01) H01R 13/53 (2006.01)

Patent

CA 2396082

Electrical connectors 40, 104 including contact terminals that can be unmated without previously disconnecting power include main contacts 12, 112 and auxiliary contacts 16, 130 that are shunted by a positive temperature coefficient (PTC) resistor 6, 140 located between the main and auxiliary contact. The main contact 12, 112 will be disconnected first and the auxiliary contact 16, 130 can be longer than the main contact 12, 112. Arcing will not occur at the mating end of the main contact 12, 112, because the current will be shunted to the still connected longer auxiliary contact 16, 130. I2R heating will increase the resistance in the PTC resistor 6, 140, so when the auxiliary contact 16, 130 is disconnected, current will be below the arcing threshold. Multiple latches 54 A,B and 60 A, B or 180 and 196 permit only discontinuous mating of electrical connectors, so that the connectors can be disconnected without arcing for a range of currents.

Connecteurs électriques 40, 104 comprenant des terminaux de contact qui peuvent être non connectés sans avoir auparavant coupé le courant. Les terminaux comprennent des contacts principaux 12, 112 et des contacts auxiliaires 16, 130 qui sont mis en dérivation par une résistance 6,140 à coefficient de température positif (PTC) située entre le contact principal et le contact auxiliaire. Le contact principal 12, 112 est déconnecté en premier, et le contact auxiliaire 16, 130 peut être maintenu plus longtemps que le contact principal 12, 112. Il n'y a pas de production d'arc à l'extrémité d'accouplement du contact principal 12, 112, parce que le courant est dérivé au contact auxiliaire toujours connecté 16, 130. La chaleur I2R fait accroître la résistance PTC 6, 140; ainsi, lorsque le contact auxiliaire 16, 130 est déconnecté, le courant sera inférieur au seuil d'arc. De multiples verrous (54 A,B et 60 A, B ou 180 et 196) permettent seulement un accouplement discontinu des connecteurs électriques, de sorte que les connecteurs puissent être déconnectés sans la production d'arc pour une gamme de courants.

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