Daikyonishikawa Corporation

Koichi Fujikawa

Satoshi Enokida

A reliable and superior joining strength in entire joining parts of resin molded bodies including tilting portions is obtained by devising a shape and a size of each protrusion for welding provided in the joining parts of the resin molded bodies. The joining parts of upper and lower half bodiesandhave vertical portionsandand vertical portionsandrespectively vertical to a pressurizing direction and tilting portionsandtilting relative to the pressurizing direction, and protrusions for weldingE toE orE toE are provided in at least the joining part of one of the half bodies. Further, referring to a butting area of the protrusions in a butted state, the butting area in the vertical portions is set to be less than the butting area in the tilting portions.

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Higashihiroshima, Japan

Koichi Fujikawa