Ventilation device for enabling a gas transfer via a wall of...

H - Electricity – 05 – K

Patent

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Details

H05K 5/02 (2006.01)

Patent

CA 2584237

The covering (1) is placed against the housing wall (2) by means of a self- adhesive coating (3) applied to the underside of the covering, and covers the recess (4) provided in the housing wall. An inner opening (5) passing through to the inside of the housing is provided in the recess (4). A gas-permeable, however, fluid-impermeable diaphragm (6) is glued over the inner opening (5). The adhesive coating (3) applied to the underside of the covering is discontinuous in the area of the inner opening (5) in order not to close the pores of the diaphragm (6). The outer opening (7) is situated so that it is laterally offset from the inner opening (5), and is made in the covering (1) while being completely delimited thereby.

L'élément de couverture (1) est appliqué sur la paroi (2) du boîtier à l'aide d'un revêtement inférieur autocollant (3) et couvre l'évidement (4) ménagé dans ladite paroi. Un trou interne traversant (5) jusqu'à l'intérieur du boîtier est ménagé dans l'évidement (4). Une membrane (6) perméable aux gaz mais imperméable aux liquides est collée sur le trou interne (5). La couche de colle (13) inférieure est interrompue dans la zone du trou interne (5) pour ne pas boucher les pores de la membrane (6). Le trou externe (7), qui est décalé latéralement par rapport au trou interne (5), est ménagé dans l'élément de couverture (1) et totalement entouré par ce dernier.

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