Improved electrical connector for aircraft fuel pumps

H - Electricity – 01 – R

Patent

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Details

H01R 13/46 (2006.01) B64D 37/00 (2006.01) H01R 13/52 (2006.01) H01R 13/533 (2006.01)

Patent

CA 2418177

The improved electrical connector for aircraft fuel pumps includes a unitary cup-shaped connector shell with an outer radial connector flange, and is configured to increase the distance between connector pins and grounded portions of the connector shell to thus increase the electrical current leak path length to prevent arcing from occurring. A glass electrical insulating plug in the connector shell forms a hermetic seal of the closed end of the connector shell, and a plurality of ceramic tubular risers are mounted to the glass insulating plug. Connector pins extend through the risers, and electrical cables are connected to the connector pins. One or more outer layers of heat shrunk electrical insulating tubing cover the risers, a portion of the connector pins extending from the risers, and the electrical cables. An electrical insulating tubular extension may also be placed over the outer layer of insulating tubing.

Le connecteur amélioré pour pompes d'approvisionnement d'aéronefs en carburant est constitué d'une enveloppe conique pourvue d'une bride radiale extérieure et il est conçu pour augmenter la distance séparant les broches du connecteur et les portions mises à la terre de l'enveloppe du connecteur, pour ainsi allonger le parcours que doit emprunter le courant de fuite et, de ce fait, éviter la création d'arcs. Un embout isolant en verre placé à l'intérieur de l'enveloppe du connecteur forme un joint hermétique à l'extrémité fermée de l'enveloppe du connecteur et des barres tubulaires en céramique sont fixées sur l'embout isolant en verre. Les broches du connecteur sortent des barres tubulaires et les câbles électriques sont reliés aux broches. Au moins une épaisseur de tube isolant thermorétractable recouvre les barres tubulaires, une portion des broches sortant des barres tubulaires ainsi que les câbles électriques. On peut également recouvrir la surface extérieure du tube isolant d'un autre tube isolant.

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