| 摘要 |
A headrest H of the type rotatable forwards and backwards relative to a headrest stay S, which comprises a trim cover assembly HC of a box-like configuration, a frame F disposed in the trim cover assembly, the frame being rotatably connected to the headrest stay S, with the headrest stay passing through the trim cover assembly, and a foam cushion member 2 which is formed by a foaming process within the trim cover assembly. The trim cover assembly includes a pair of folded extensions, 10A folded generally at a right angle therefrom and extending inwardly thereof, which are located at a point where the headrest stay passes through the trim cover assembly. Such pair of folded extensions have, defined therein, openings A,C designed not only to prevent leakage of a liquid foaming base material from the trim cover assembly during the foaming process, but also allow the fore-and-aft rotation of headrest relative to the headrest stay. The folded extensions are effective in receiving a full pressure at both sides thereof from an outward expanding mass of foam cushion member during the foaming process, to provide a positive closing of the folded extensions and openings.
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