PROBLEM TO BE SOLVED: To provide a pruning machine capable of reducing abrasion between an big end of a connecting rod and an eccentric cam.SOLUTION: This pruning machine (1) relatively reciprocates a pair of blades (10 and 12) having a plurality of cutting teeth (8) in a longitudinal direction (A1) with a rotating power machine (2). The pruning machine (1) has eccentric cams (28 and 30) which eccentrically rotate by the rotating power machine (2), and connecting rods (32 and 34) having big ends (32a and 34a) which engage with the surroundings of the eccentric cams (28 and 30). The big ends (32a and 34a) have on a connecting rod axis (A2), receiving parts (68a and 68b) which receive load from the blades (10 and 12) and can transform to the direction of the connecting rod axis (A2), when the connecting rod axis (A2) which passes the small ends (32b and 34b) of connecting rods (32 and 34) and the big ends (32a and 34a), and the longitudinal direction (A1) get in a line.COPYRIGHT: (C)2008,JPO&INPIT【課題】コンロッドの大端部と偏心カムとの間の摩耗を軽減することができる刈込機を提供する。【解決手段】本発明は、複数の刈刃(8)を有する一対のブレード(10,12)を、回転動力機(2)によって長手方向(A1)に相対的に往復動させる刈込機(1)に関する。刈込機(1)は、回転動力機(2)によって偏心回転する偏心カム(28,30)と、前記偏心カム(28,30)の周囲に嵌合する大端部(32a,34a)を備えたコンロッド(32,34)を有する。前記大端部(32a,34a)は、前記コンロッド(32,34)の小端部(32b,34b)及び前記大端部(32a,34a)を通るコンロッド軸線(A2)と前記長手方向(A1)とが整列したとき、前記ブレード(10,12)からの負荷を受けて前記コンロッド軸線(A2)の方向に変形可能な受け部(68a,68b)を前記コンロッド軸線(A2)上に有する。【選択図】図2
