{
  "$type": "site.standard.document",
  "description": "Provided is a high-pressure fuel supply pump capable of reducing stress generated in a portion forming a space provided for a welding portion while preventing spatter from entering the pump. [0002] In a high-pressure fuel supply pump 1, a discharge joint 19 is attached to an attachment hole 1h…",
  "path": "/patents/1401253",
  "publishedAt": "2026-04-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M59/44",
    "ASTEMO LTD [JP]"
  ],
  "textContent": "Provided is a high-pressure fuel supply pump capable of reducing stress generated in a portion forming a space provided for a welding portion while preventing spatter from entering the pump. [0002] In a high-pressure fuel supply pump 1, a discharge joint 19 is attached to an attachment hole 1h provided in a pump body 1a via a welding portion 90. A space portion 91 is formed from a terminal end portion 90b of the welding portion 90 toward a deep side of the attachment hole 1h. The discharge joint has an end surface 71 of the attachment hole 1h in the depth direction and an outer peripheral surface 72 rising from the end surface 71. The wall surface of the attachment hole 1h has a facing surface 81 facing the end surface 71 and an inner peripheral surface 82 located outside the outer peripheral surface 72 and extending from the facing surface 81 to the terminal end portion 90b of the welding portion. The end surface 71 and the facing surface 81 form a gap C in a predetermined range. The space portion 91 is formed from the terminal end portion 90b of the welding portion to the facing surface 81. The entire inner peripheral surface 82 from the terminal end portion 90b of the welding portion to the facing surface 81 is formed as a concave curved surface to constitute a wall surface of the space portion 91.",
  "title": "HIGH-PRESSURE FUEL SUPPLY PUMP"
}