PROBLEM TO BE SOLVED: To provide a quick coupler realized with a small number of components, assembled and operated easily with little likelihood of wear/defects, and produced at low cost.SOLUTION: A guide bracket 5 which has a hollow part between right and left side plates in an axial direction with a tip end open part of the hollow part being directed to a U-shaped engaging part 1 of a lower link frame 2 is coupled integrally to the lower link frame in the axial direction. A compression spring 8 is connected serially to a rear end of a slider 7 whose tip end is formed into a plane inclined downward, and fitted slidably to the hollow part of the guide bracket so that the tip end of the slider is energized to the outside of an open end of the guide bracket by the serially connected compression spring. There is provided a slider unlock lever 10 which is made to project to an upper area of the hollow part in one end and interlockably engaged with a rear part of the slider in the other end by using a rotation fulcrum 10a being pivotally supported in the right and left side plates of the guide bracket, and unlock holding means for engaging the slide unlock lever rotated to an unlock position with a rear-end hook part of the guide bracket.COPYRIGHT: (C)2014,JPO&INPIT【課題】部品点数が少なく、組付け及び操作が簡単で、摩耗・不具合が生じにくい低コストのクイックカプラを提供する。【解決手段】左右側板間に軸方向の中空部を有し中空部の先端開放部がロワリンクフレーム2のU字形係着部1に向くようにしたガイドブラケット5をロワリンクフレームの軸方向に一体結合する。先端を下向き傾斜面に形成したスライダ7の後端に圧縮ばね8を直列に配してガイドブラケットの中空部に摺動可能に嵌装し、直列圧縮ばねによりスライダ先端をガイドブラケット開放端外側へ付勢させる。ガイドブラケットの左右側板に回動支点10aを軸支し、その一端側を中空部上方へ突出させるとともに他端側をスライダの後部に連動可能に係合させたスライダアンロックレバー10とアンロック位置へ回動させたスライドアンロックレバーをガイドブラケットの後端フック部に係着させるアンロック保持手段を設ける。【選択図】図3
