| 摘要 |
PURPOSE:To shift the inner and outer edges of respective isolators in the axial direction to prevent the discharge, during that period, by covering the conductive path of the center electrode with isolation materials axially divided and arranging a metallic member at the outside thereof and connecting respective isolation materials in the joint so as to hold them mutually. CONSTITUTION:In an injector 1, a high tension distribution line 2 is connected to a needle 7 through respective first and second conductive materials 3, 4, an adjusting bar 5, and a return spring 6 and the center electrode 9 is arranged in a needle sheet 8. And respective constituents 3-8 arranged at the central part, respective cylinders 21, 22, 26 from the first to the third one arranged at the outside, and respective first and second housings 28, 29, etc., are electrically isolated by the first-the fifth isolation materials 11-15. The joints a1, a2 of respective isolating materials 11-15 are connected so as to hold them mutually. In this way, the edge which contacts the conductive material in the inside of respective isolation materials 11-15 are axially shifted from the edge which contacts the metallic member at the outside to prevent electric discharge between them.
|
