{
  "$type": "site.standard.document",
  "description": "Provided is a piping connection structure which assigns a function to restrict a pipe body from coming off to a member other than a resin tube, improves in sealing performance and can suppress the amount of fuel permeation. A resin tube (3) comprises a tube body portion (31) ; a first…",
  "path": "/patents/956430",
  "publishedAt": "2015-10-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F16L37/088",
    "SUMITOMO RIKO CO LTD [JP]"
  ],
  "textContent": "Provided is a piping connection structure which assigns a function to restrict a pipe body from coming off to a member other than a resin tube, improves in sealing performance and can suppress the amount of fuel permeation. A resin tube (3) comprises a tube body portion (31) ; a first diameter-expanding portion (32) formed to increase in diameter from an axial end of the tube body portion (31) and axially positioning seal members (71, 72) by holding the seal members (71, 72) in an axial gap with a retainer (4); and a second diameter-expanding portion (33) formed to further increase in diameter from the first diameter-expanding portion (32), and to contact an outer circumferential side of the seal members (71, 72) and be connected to the retainer while in contact with the retainer (4). Thickness (H32) of the first diameter-expanding portion (32) is equal to or greater than thickness (H31) of the tube body portion (31).",
  "title": "PIPING CONNECTION STRUCTURE"
}