PROBLEM TO BE SOLVED: To provide a connector for an agricultural working machine composed so as to make rotation of an implement (46) to an inoperative position in the upper side easy and hold the posture of the implement (46) in the rotated state to an operative position in the lower side.SOLUTION: The connector the agricultural working machine is obtained as follows. The implement (46) is installed freely rotatably around a fulcral shaft (53) in a supporting frame (52) and the implement (46) is composed so as to be freely reversibly rotatable to the operative position located under the fulcral shaft (53) and the inoperative position located above the fulcral shaft (53). A lifting rotation auxiliary mechanism (C) is installed between the supporting frame (52) and the implement (46) so that the urging direction of a spring (62) faces so as to rotate to the lower side in the operative position under the implement (46) and the urging direction of the spring (62) is changed so as to rotate to the upper side in the course of rotation of the implement (46) from the operative position in the lower side to the inoperative position in the upper side. Furthermore, a fixing means (L) for holding the implement (46) in the operative position and the inoperative position is provided.COPYRIGHT: (C)2008,JPO&INPIT【課題】作業機(46)の上方の非作用位置への回動を楽にし、且つ、作業機(46)の下方の作業位置へ回動状態ではこの姿勢を保持するように構成する。【解決手段】支持フレーム(52)に作業機(46)を支点軸(53)回りに回動自在に設けて該作業機(46)を前記支点軸(53)の下方に位置する作業位置と前記支点軸(53)の上方に位置する非作業位置とに反転回動自在に構成し、前記支持フレーム(52)と作業機(46)との間に、作業機(46)の下方の作業位置ではバネ(62)の付勢方向が下方に回動するように向い、下方の作業位置から上方の非作業位置へ作業機(46)が回動する中途でバネ(62)の付勢方向が上方に回動するように変更される持ち上げ回動補助機構(C)を設けるとともに、上記作業位置及び非作業位置に作業機(46)を保持する固定手段(L)を設ける。【選択図】図4
