| 摘要 |
PURPOSE:To contrive simplification of assembling work and structure, by providing an ignition coil which is secured in a casing by pouring insulation plastics into the casing on a printed circuit board for securing. CONSTITUTION:An ignition coil 13 is supported on a printed wiring board 11 by an installation plate 17 and a collar in combination. Then, the printed wiring board 11 together with the ignition coil are incorporated into an insulation casing 12, and liquid insulation plastics 22 is poured into the casing 12 for filling up and curing. In this manner, a space between a printed circuit and electronic components which are conduction layer of each of coils 15 and 16 and printed wiring board is insulated sufficiently and it will be out of question even if a secondary coil applies output of high voltage as the ignition coil 13 is secured by lifting sufficiently above the printed wiring board 11 and such space is filled up with the poured insulation plastics. Thus, simplification of assembling work and structure can be contrived. |
