| 摘要 |
PROBLEM TO BE SOLVED: To provide a discharge type ignition plug to prevent the occurrence of unevenness in discharge at every ignition plug and achieve improvement of discharge capacity, ignitability, and durability. SOLUTION: A discharge body 10 made of a metal provided at a rear end with a male screw (b) for screw lock of a source terminal is inserted in a cylindrical insulation body 12 with a needle-form tip 10 protruded, and the two parts are integrally formed by an adhesive. A positioning means to specify an amount of protrusion of the tip of the discharge body from an insertion hole 11 is provided between the discharge body insertion hole 11 of the insulation body 12 and the discharge body 10. An insertion hole part 11a further on the rear side than the positioning means is formed in a diameter larger than that of the discharge body 10 and a gap between the insertion hole part 11a and the discharge body 10 is filled with an adhesive. |
