| 摘要 |
PROBLEM TO BE SOLVED: To suppress progress of peeling generated at a boundary face between metal rings buried in a resin case by insert molding, and a resin case to prevent immersion into the case through the peeled portion. SOLUTION: The metal rings 26a, 26b, 26c are buried by the insert molding in the resin case sealing the electronic device, and are tubular. Its inner peripheral face is threaded into a female screw part 28, and grooves 53a, 53b are formed to extend along whole circumference of the metal rings. Projections 54a, 54b projected from a bottom part of the grooves 53a, 53b are formed to the inside of the grooves 53a, 53b. The projections 54a, 54b have vertical faces 55 formed on a rotational direction of a screw screwed into the metal ring and extended to the whole areas of the grooves 53a, 53b in a depth direction of the grooves 53a, 53b. COPYRIGHT: (C)2009,JPO&INPIT
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