{
  "$type": "site.standard.document",
  "description": "A hand crank structure of a trailer jack is provided, including a shaft, a rotating shaft, a handle assembly, a spring, and a locating ring. A circumferential locating hole is disposed on an end of the handle assembly, and the handle assembly is sleeved on the rotating shaft by using the…",
  "path": "/patents/1380926",
  "publishedAt": "2026-04-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60D1/66",
    "Lizhong Mo"
  ],
  "textContent": "A hand crank structure of a trailer jack is provided, including a shaft, a rotating shaft, a handle assembly, a spring, and a locating ring. A circumferential locating hole is disposed on an end of the handle assembly, and the handle assembly is sleeved on the rotating shaft by using the circumferential locating hole and is able to move axially on the rotating shaft. A circumferential locating member is disposed in a moving range of the handle assembly corresponding to the rotating shaft, after the handle assembly slides outward, the circumferential locating hole cooperates with the circumferential locating member to rotate synchronously, and after the handle assembly slides inward, the circumferential locating hole is separated from the circumferential locating member.",
  "title": "HAND CRANK STRUCTURE OF TRAILER JACK"
}