{
  "$type": "site.standard.document",
  "description": "The present application discloses a structural unit for expansion fitting in a vehicle frame coupler, and relates to the field of vehicle accessories. A technical solution involves: including a tubular body configured for insertion into a tube socket prepared in a towbar, the tubular body being…",
  "path": "/patents/1374085",
  "publishedAt": "2026-06-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60D1/36",
    "WODE GLOBAL (QINGDAO) OUTDOOR CO.LTD"
  ],
  "textContent": "The present application discloses a structural unit for expansion fitting in a vehicle frame coupler, and relates to the field of vehicle accessories. A technical solution involves: including a tubular body configured for insertion into a tube socket prepared in a towbar, the tubular body being hollow inside, and the tubular body being provided with through openings; an expansion member including two expanding blocks, the two expanding blocks being respectively arranged at openings of tube walls on two sides of the tubular body and both slidably connected to the openings of the tube walls; a driving assembly arranged at an end of the tubular body, and linked with the expansion member through a linkage assembly, to drive each of the expanding blocks to move towards an outer side of the tubular body; and the linkage assembly being arranged inside the tubular body. The present disclosure has the following beneficial effects. According to the solution, the tubular body is provided with movable expanding blocks, and as the tubular body is inserted into a square tube prepared in the towbar, the expanding blocks are driven, through the driving assembly, to move towards an outer side of the tubular body, so as to be pressed against an inner wall of the square tube prepared in the towbar, thereby improving tightness at the joint of the tubular body and realizing expansion fastening of connected structures.",
  "title": "Structural unit for expansion fitting in vehicle frame coupler"
}