| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure a range which can be irradiated with laser beams and a welding area which can be welded by laser beams by devising a shape in unevenness-engagement while the generation of a gap is prevented by the unevenness-engagement between the contact end parts of a permeable resin material and a non-permeable resin material. SOLUTION: An engagement-projected part 11b is formed in the contact end part 11a of a first molding member 11 of a permeable resin material which allows the permeation of laser beams as a heat source, and an engagement- recessed part 12a is formed in the contact end part 12a of a second molding member 12 of a non-permeable resin material which does not allow the permeation of the laser beams. A pair of facing wall parts which forms the recessed part 12b comprises a higher facing wall part 12c2 and a lower facing wall part 12c1. By emitting laser beams from the side of the lower facing wall part 12c1, the range which can be irradiated with the laser beams and the welding area which can be welded by the laser beams can be secured sufficiently. |
