Casing structure for electronic equipment
AssigneeFanuc Corporation
InventorsKazuhiko Hirano, Kazuyuki Sasaki
Life of this patent
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Abstract
A fan motor is mounted on the upper wall of the casing. The lower surface of this upper wall is formed into an inclined surface in which inclination is formed from the front wall side of the casing toward a back wall across from the front wall. When the fan motor is driven, oil mist or moisture contained in the air are condensed into water droplets or oil droplets. These water droplets or oil droplets fall and flow to the inner wall surface of the upper wall of the casing along the inner peripheral wall of a vent hole. Then the water droplets or oil droplets flow along the profile line of a vent hole smoothly (without stopping) and roll down the side wall of the casing.
Claims7
A casing structure for electronic equipment in which a fan motor is attached to an upper part of a vent hole formed on an upper wall of a casing,
- wherein a rib protruding downward is provided on an inner wall surface of the upper wall in the casing at a periphery of the vent hole,
- an end surface of the rib is formed as an inclined surface in which one side wall of the casing is lowered and the other side wall or an opening across therefrom is raised, and
- the rib is provided on the upper wall such that the end surface thereof is not raised in mid-course but only descends at least between a point of the highest position of the rib and a point in which the end surface intersects with a line which passes through substantially the center of the vent hole and is perpendicular to the inclination direction of the end surface.
Dependencies are inferred from the claim text.