Cushion assembly for a motor vehicle seat
First Claim
1. Cushion for a motor vehicle seat, comprising:
- a ventilation layer, through which air can flow;
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, which are inserted into respective ones of the ventilation channels, each with a protruding collar on its closed upper end which rests on the surface of the ventilation layer;
each sleeve including a sleeve jacket segment which passes through the ventilation layer to air passage openings; and
miniature fans, which are received in respective ones of the 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 jackets are formed by oblong holes which extend in the circumferential direction of the sleeve and have a hole width measured in an axial direction of the sleeve equal to or smaller than the thickness of the layer of fabric.
1 Assignment
0 Petitions
Accused Products
Abstract
A cushion for a motor vehicle seat which 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.
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Citations
22 Claims
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1. Cushion for a motor vehicle seat, comprising:
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a ventilation layer, through which air can flow;
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, which are inserted into respective ones of the ventilation channels, each with a protruding collar on its closed upper end which rests on the surface of the ventilation layer;
each sleeve including a sleeve jacket segment which passes through the ventilation layer to air passage openings; and
miniature fans, which are received in respective ones of the 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 jackets are formed by oblong holes which extend in the circumferential direction of the sleeve and have a hole width measured in an axial direction of the sleeve equal to or smaller than the thickness of the layer of fabric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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13. An air flow accommodating sleeve for use in a vehicle seat cushion which has a foam block with a ventilation channel extending therethrough and a fabric ventilation layer covering the foam block, said air flow accommodating sleeve comprising:
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a cylindrical sleeve jacket, and a flange with an annular protruding collar closing off one end of the sleeve jacket, wherein the sleeve jacket has air passage openings in the form of oblong holes below the flange, said oblong holes extending in a circumferential direction of the sleeve jacket and exhibiting a width measured in an axial direction of the sleeve jacket equal to or less than a thickness of the fabric ventilation layer and such that when in an in use position, said holes open to the fabric ventilation layer.
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Specification