PROBLEM TO BE SOLVED: To provide a mowing blade unit and its blade body in which the shock received by a blade body, a place of shaft attachment between a base and the blade body and a shaft attachment member is reduced or suppressed.SOLUTION: A mowing blade unit 1 includes at least 4-bodies of predetermined blade bodies 20 for coming in shaft attachment with the circumferential edge of a disk-shaped base 10, and a shaft attachment member 30 for bringing the base 10 with the blade body 20 in a freely turning manner. The blade body 20 has: a blade body shaft attachment part 211 being a shaft attachment portion with the base 10, and an extension part 212 being a bending extension destination. A predetermined V-shaped concave part 214 is provided in the one side of the extension part 212. Cutting blades 213 are provided in both side parts of the extension part 212.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】刃体、基台と刃体との軸着箇所及び軸着部材が受ける衝撃をより軽減又は抑制する草刈り刃ユニット及びその刃体を提供すること。【解決手段】草刈り刃ユニット１は、円盤形状の基台１０の周縁部に軸着する４体の所定の刃体２０と、基台１０と刃体２０とを回動自在に軸着する軸着部材３０と、を少なくとも備える。刃体２０は、基台１０との軸着部分である刃体軸着部２１１と、その折曲延設先である延設部２１２とを有し、延設部２１２の一方面側には所定のＶ字形状凹面部２１４を設けている。延設部２１２の両側辺部には切断刃２１３を設けている。【選択図】図３
