| 摘要 |
<p>PURPOSE:To prevent the leakage of resin from the through-hole located on the bottom face of a case without using a bonding agent by a method wherein the case part on the circumference of the through-hole is airtightly closed in a pinched manner by using a plug connecting metal fitting and the insulating resin material wherein a high-tension terminal metal fitting is buried. CONSTITUTION:After the insulating resin 12 such as epoxy resin and the like is injected from the aperture end of a case 4 into the case 4 wherein the primary winding 7 and the secondary winding 11 are housed, the resin 12 is hardened. Also, a through-hole 4a is formed almost in the center of the bottom face of the case 4, and a cylindrical plug fitting pipe 4b, covering the insulator part of an ignition plug 14, is protrudingly formed in one body on the circumference of said through hole heading to downward direction. The case part on the circumference of the through hole 4a is pinched by insulating resin material 3 and the plug-connecting metal fitting 1 when the male screw 1a of the plug- connecting metal fitting 1, inserted into the inner bottom part of the plug fitting pipe 4b, is screwed into the screw hole 2a of a high-tension terminal metal fitting 2, and the through-hole 4a is airtightly closed.</p> |
