| 摘要 |
PROBLEM TO BE SOLVED: To fix a bearing case at the required position within a sun visor main body simultaneously with the blow molding of the sun visor main body without forming cavities in the outer surfaces of the surface plate part and rear plate part of the sun visor main body. SOLUTION: A bearing case 21 having support protruding pieces 26 provided in the surface thereof is positioned and held between a pair of molds 43, 44 in such a state that both molds 43, 44 are opened and inserted into a parison while the parison is extruded to the cavity between both molds 43, 44 to clamp both molds and the support protruding pieces 26 of the bearing case 21 are pushed in the inner wall of the parison on the basis of the mold clamping operation and, thereafter, air is blown in the parison from an air blowing-in pipe 46 to perform the air blow of the parison to mold a hollow sun visor main body 1 equipped with a surface plate part 2, a rear plate part 3 and a peripheral wall part 44 in contact with the mold surfaces of both molds 43, 44 and, at the same time, the bearing case 21 is fixed at the required position within the sun visor main body 1. |
