{
  "$type": "site.standard.document",
  "description": "There is provided a seatback in which plural tubular portions are formed in a back frame by bending a single panel, and the plural tubular portions respectively configure closed cross-sections. Here, respective end portions of the tubular portions are joined to each other by being abutted and…",
  "path": "/patents/1382507",
  "publishedAt": "2026-05-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60N2/686",
    "NHK SPRING CO., LTD."
  ],
  "textContent": "There is provided a seatback in which plural tubular portions are formed in a back frame by bending a single panel, and the plural tubular portions respectively configure closed cross-sections. Here, respective end portions of the tubular portions are joined to each other by being abutted and welded at joining portions, and the closed cross-sections of the tubular portions are continuous with each other. Therefore, the strength of the end portions of the tubular portions of the back frame can be increased.",
  "title": "VEHICLE SEAT FRAME AND VEHICLE SEAT"
}