To provide a joint capable of smoothly inserting a sheet fastener comprising a pair of horizontal flanges, into an opening from an oblique direction, after insertion, guiding the flanges to a base end position of a hook without generating a gap between the flanges and a side surface of the opening, accurately and easily positioning the flanges to the sheet fastener, and preventing occurrence of rattling.SOLUTION: A joint comprises: a support piece 1； an opening 2 formed on a top end of the support piece； a pair of hooks 3A, 3B horizontally provided to face both sides of the top end of the opening, in the joint, a sheet fastener comprising a left and right pair of flanges being inserted into the opening while crossing a channel material forming a purline or rafter, is coupled to the channel material. A dimension C between lower side base end parts 5C, 5C of respective hooks is formed into a length which corresponds to a width dimension between ends of the pair of flanges, and a guide surface 4 for a flange guide which is continuous to the lower end corner parts 5A, 5B of the opening from a lower side base end part, is formed on one side surface or both side surfaces of the opening.SELECTED DRAWING: Figure 2【課題】一対の水平な鍔を備えたシート止め具を開口部内に斜め方向からスムースに挿入でき、挿入後には鍔と開口部の側面との間に隙間を発生させることなく鍔をフックの基端位置まで案内させ、シート止め具に対する位置合わせが容易で正確であり、ガタの発生を防止できるジョイントを提供する。【解決手段】支持片１と、支持片の上端に形成した開口部２と、開口部の上端両側に相対向して水平に設けられた一対のフック３Ａ、３Ｂとを備え、開口部内に母屋又は垂木を構成するチャンネル材とクロスさせながら挿入した左右一対のフランジ状鍔を備えたシート止め具をチャンネル材に結合させるジョイントにおいて、各フックの下側基端部５Ｃ、５Ｃ間の寸法Ｃを一対の鍔の端部間の幅寸法と符号する長さに形成させ、更に開口部の片側又は両側側面に下側基端部から開口部の下端角部５Ａ、５Ｂに連なる鍔案内用のガイド面４を形成した。【選択図】図２
