A protective containment apparatus for potted electronic...

H - Electricity – 01 – C

Patent

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Details

H01C 7/12 (2006.01) H02H 9/04 (2006.01) H05K 3/28 (2006.01) H05K 5/06 (2006.01)

Patent

CA 2295131

A protective containment apparatus for preventing damage to expensive components of an assembly due to the failure of an electronic component in a nearby potted circuit which is known to fail catastrophically. The containment apparatus can employ a resilient material placed around the at-risk electronic component prior to potting the circuit. The resilient material absorbs the expanding gases and fragmented parts of the at- risk component which are expelled during the catastrophic failure. The cushioning effect of the resilient material prevents the fragments and parts of the potting material from becoming projectiles that can damage any nearby components of the assembly. The containment apparatus can also employ a restrictive material placed around the at-risk component prior to potting the circuit. The restrictive material prevents any expelled fragments of the at-risk component and expanding gases from causing the potting material to fracture and become projectiles which can damage nearby components of the assembly. A combination of the resilient material and the restrictive material can also be employed and is most effective in preventing damage to nearby component of the assembly.

Cette invention concerne un appareil de contention et de protection qui permet d'éviter que les composants onéreux d'un système subissent des dommages dus à une défaillance d'un composant électronique se trouvant dans un circuit encapsulé adjacent que l'on sait capable de défaillir de manière catastrophique. Cet appareil de contention peut faire appel à un matériau élastique (38) que l'on place autour du composant électronique à risque (34) avant d'encapsuler le circuit. Le matériau élastique (38) va absorber les gaz en expansion ainsi que les parties fragmentées du composant à risque (34) qui sont expulsés lors d'une défaillance catastrophique. L'effet coussin du matériau élastique (38) empêche les fragments et des parties du matériau d'encapsulation de se transformer en projectiles qui pourraient endommager des composants adjacents dans le système. Cet appareil de contention peut également faire appel à un matériau restrictif (42) que l'on place autour du composant à risque (34) avant d'encapsuler le circuit. Le matériau restrictif (42) va empêcher tous les fragments du composant à risque (34) ainsi que les gaz en expansion qui ont été expulsés de venir briser le matériau d'encapsulation et de former des projectiles qui pourraient endommager des composants adjacents dans le système. Il est également possible de combiner le matériau élastique (38) et le matériau restrictif (42) de manière à prévenir plus efficacement les dommages à un composant adjacent dans le système.

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