Cushion assembly for a motor vehicle seat
AssigneeDaimlerChrysler AG
InventorKarl Pfahler
Life of this patent
Estimating the term…
Abstract
A cushion for a motor vehicle seat includes a layer of ventilation fabric, through which air can flow, and miniature fans integrated into the cushion to blow air into the ventilation layer. The air is received in sleeves installed in ventilation channels which penetrate the cushion from a cushion bottom side and extend to an upper side of the ventilation layer. To achieve adequate cushion ventilation with low fan noise even when using thin fabric ventilation layers made of relatively hard material, the sleeves are closed on their upper end with a flange and are provided directly below the flange with oblong holes which extend in the circumferential direction and have a width measured in the axial direction which is equal to or less than the thickness of the layer of fabric.
Claims12
A cushion for a motor vehicle seat, comprising:
- a ventilation layer allowing air to flow through;
- ventilation channels, which pass through the cushion from a cushion bottom side up to an upper side of the ventilation layer, facing away from the cushion bottom side;
- sleeves being inserted into said respective ventilation channels, wherein each of the channels have a protruding collar on a closed upper end which rests on the surface of the ventilation layer;
- each of said sleeves including a sleeve jacket segment which passes through the ventilation layer to air passage openings;
- and
- miniature fans being received in said respective sleeves;
- wherein the ventilation layer is formed exclusively by a thin layer of fabric,
- wherein the sleeves are designed rigidly in axial and radial directions, and
- wherein the air passage openings in the sleeve jacket segments are formed by oblong holes which extend in a circumferential direction of the sleeve, each of the holes having a width measured in an axial direction of the sleeve at least equal to or smaller than the thickness of the layer of fabric.
Dependencies are inferred from the claim text.