{
  "$type": "site.standard.document",
  "description": "The present invention relates to a seat headrest device comprising a fixed base (30), a headrest (20) and a headrest electric motor (40). The headrest electric motor (40) drives the headrest (20) to move relative to the fixed base (30) through a composite motion mechanism comprising a screw-nut…",
  "path": "/patents/1392208",
  "publishedAt": "2026-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60N2/02253",
    "YANFENG INTERNATIONAL AUTOMOTIVE TECH CO LTD [CN]"
  ],
  "textContent": "The present invention relates to a seat headrest device comprising a fixed base (30), a headrest (20) and a headrest electric motor (40). The headrest electric motor (40) drives the headrest (20) to move relative to the fixed base (30) through a composite motion mechanism comprising a screw-nut mechanism (70) and a pinion-rack mechanism (10). The present invention further discloses a seat headrest device comprising the seat headrest device. The seat headrest device has the following characteristics: a stroke of the headrest can be significantly enhanced by means of the composite movement mechanism.",
  "title": "SEAT HEADREST AND VEHICLE SEAT"
}