PROBLEM TO BE SOLVED: To provide a farm implement hardly causing a bad state in the engagement between one engaging body and the other engaging body to enable power transmission to be carried out properly by both of the engaging bodies.SOLUTION: The farm implement 1 includes a center operation part 2 and right and left extended operation parts 3. The center operation part 2 includes the one-side rotatable engaging body 31 for power transmission, and the extended operation parts 3 have the other-side rotatable engaging bodies 32 for power transmission engaging with the one-side engaging body 31. The one-side engaging body 31 includes a plurality of engaging parts 43 arranged in the circumferential direction, and the other-side engaging body 32 includes a plurality of fitting-in parts 64 capable of fitting in the neighboring engaging parts 43 in the circumferential direction. When the fitting-in part 64 is fitted in the neighboring engaging parts 43, the fitting-in part 64 contacts with a power-transmitting plane 46 and an inclined surface 47 of the engaging part 43, and the space part 71 is left between the engaging parts 43 neighboring in the circumferential direction.COPYRIGHT: (C)2009,JPO&INPIT【課題】一方側係合体と他方側係合体との係合に不具合が生じにくく、両係合体にて動力伝達を適切に行うことができる農作業機を提供する。【解決手段】農作業機1は、中央作業部2と左右の延長作業部3とを具備する。中央作業部2は回転可能な動力伝達用の一方側係合体31を備え、延長作業部3は一方側係合体31と係合する回転可能な動力伝達用の他方側係合体32を備える。一方側係合体31は周方向に並ぶ複数の係合部43を有し、他方側係合体32は周方向に隣り合う係合部43間に嵌入可能な複数の嵌入部64を有する。嵌入部64が隣り合う係合部43間に嵌入した状態時には、その嵌入部64は係合部43の動力伝達平面46および傾斜面47と接触し、周方向に隣り合う係合部43間には空間部71が残る。【選択図】図1
