| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a filling port for a bag-in-box, which prevents erroneous disengagement during use in spite of adoption of a simplified structure. SOLUTION: A liquid passage hole is formed of plural leg parts 33 installed so as to extend protrusively from the lower part of the inner wall of a spout 10 in the upward direction of the inside, and a check valve 30, which is fitted for fixation to the spout 10, is constitutionally provided with a seating part 34 for making the section of the hole 23 of a female connector 20 blocked from below in the upper parts of the leg parts 33. The spout 10 without the check valve 30 can be molded by means of a mold dispensing with forced unmolding during molding, and a solid undercut can be formed in an annular protrusion 17 for fitting in the upper part of the inner wall of a cylindrical body 11, for the purpose of enabling an increase in force for being fitted into the female connector 20. The spout 10 can be molded from a rigid resin, in order to further increase the force for fitting the spout 10 into the female connector 20.</p> |
