Patent ID: 7278661

Claim:
A connecting structure of a branch connector in a fuel pressure accumulating container for supplying fuel at a pressure of not less than 1000 kgf/cm 2 , comprising: a substantially cylindrical fuel container having an axially extending peripheral wall defining an internal flow path with an inner peripheral surface that is cylindrical along portions of the peripheral wall, at least one through hole formed through the axially extending peripheral wall of the cylindrical fuel container so that the through hole communicates with the internal flow path of the cylindrical fuel container; a burring wall formed unitarily with the peripheral wall at an inner opening end of the through hole so that portions of the inner peripheral surface around the through hole are arcuately convex; and a branch pipe or a branch joint fixture being inserted into the through hole and a brazed material or a diffusion-bonded layer between the branch pipe or the branch joint fixture and the cylindrical fuel container at both the through hole and the burring wall for joining the branch pipe or the branch joint fixture to a cylindrical fuel container at the through hole and the burring wall, and the branch connector being inserted sufficiently deeply into the through hole for the distal end of the branch connector to project from the arcuately convex burring wall into the flow path.