| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal structure of a pipe joint capable of securing high sealing ability with small axial force so as to achieve space-saving in the connecting portion of the pipe joint, and a fuel injection unit. SOLUTION: When a joint 14 is screwed on an injector 2, a corner part 26 of the joint 14 side abuts on an inclined surface part 30 of a washer 21, and a corner part 29 of the injector 2 side abuts on an inclined surface part 31 of the washer 21, thereby forming linear sealing parts 32, 33. In such screwing, a flat surface-like abutting part 25 of the joint 14 and a flat surface- like abutting part 28 of the injector 2 both abut on the washer 21 in the state of crushing the washer 21, thereby forming flat surface parts 35, 36. |
