PROBLEM TO BE SOLVED: To provide a hook part structure which allows hooking even when a hook position is in a low position.SOLUTION: An extension piece 61 extending from a body 2 is provided on a rear surface construction member 13 forming the body 2. A folding part 71 which folds the extension piece 61 toward the body 2 side in a state that folding back is possible, is provided on a stem of the extension piece 61. A free end of the extension piece 61 is separated from the body 2 for forming a hooking space 101 between the extension piece 61 and the body 2. In the state, rotation of the extension piece 61 in a direction separating from the body 2 is inhibited by an inhibition piece 31, and a hook shape is formed by the extension piece 61 and the rear surface construction member 13 forming the body 2.COPYRIGHT: (C)2015,JPO&INPIT【課題】引っ掛け位置が低位置であっても引っ掛けることができるフック部構造を提供する。【解決手段】本体2を構成する後面構成部材13に本体2より延出する延出片61を設ける。延出片61の基部に延出片61を本体2側へ折返し可能に折曲する折曲部71を設定する。延出片61の自由端部を本体2から離間して延出片61と本体2との間に引っ掛け空間101を形成可能とする。この状態で延出片61の本体2から離間する方向への回動を阻止片31で阻止し延出片61と本体2を構成する後面構成部材13とでフック形状を形成する。【選択図】図4