FASTENING STRUCTURE OF TUBULAR MEMBER AND URINAL

PROBLEM TO BE SOLVED: To provide a fastening structure of a tubular member that has high flexibility of design while suppressing the number of components.SOLUTION: A fastening structure includes: a spreader 6 in which a screw part is formed on an outer peripheral surface in the vicinity of an opening end; an elbow 16 that has a flange part 30, and is formed so that the part on a tip side with respect to the flange part 30 can be inserted into the spreader 6; a locking nut 20 that has a locking part capable of locking the flange part 30 on the opposite side of the spreader 6, and prevents fall-off of the elbow 16 by being screwed into the spreader 6; and an open hole that defines the locking part at the locking nut 20, and is formed so that the flange part 30 can be inserted. 【課題】部品点数を抑制しつつ設計自由度の高い管状部材の留め付け構造を実現する。【解決手段】ある態様の留め付け構造は、開口端近傍の外周面にねじ部が形成されたスプレッダ６と、鍔部３０を有し、その鍔部３０よりも先端側の部分がスプレッダ６に挿入可能に形成されたエルボ１６と、鍔部３０をスプレッダ６とは反対側にて係止可能な係止部を有し、スプレッダ６に螺合することによりエルボ１６の脱落を防止する係止ナット２０と、係止ナット２０にて係止部を画定し、鍔部３０を挿通可能に形成された貫通孔と、を備える。【選択図】図８