Method for electrical heating, particularly of vehicle seats

Details Method for electrical heating, particularly of vehicle seats Method for electrical heating, particularly of vehicle seats

B - Operations, Transporting

60

N

309/7

B60N 2/56 (2006.01) A47C 7/74 (2006.01)

Patent

CA 1254604

ABSTRACT OF THE DISCLOSURE The invention relates to a method for electrically heating vehicle seats by at least one flat heating element, its insulated heating conductor being covered on both sides. It is the aim of this invention to provide a method of this kind which absorbs the deformations through use without restricting the elastic behaviour of the foam cushion core. According to the invention it is provided that at least one meander-shaped insulated heating conductor is placed on one supporting foil of thermoplastic material and covered by another foil, which may be identical, whereby the thermal dimensional stability of the heating conductor insulation exceeds that of the foils by approximately 50%, that subsequently by supplying heat and pressure a firmly connected heating element is formed, its heating conductor lying in the meander-shaped channels designed according to the laying pattern without a bond to the foils resulting, and that the elastic properties of the heating element are adjusted in conjunction with the selection of the smallest possible meandering distance such that in the unstressed state a long length of the heating conductor is given so that the heating element is nondestructively expandable up to at least double the length and width at each loaded point. The heating elements thus constructed are connected to the cushion cores, whereby in the case of deep-drawing the arrangement is on the inside of the cover.

502114

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