| 摘要 |
PROBLEM TO BE SOLVED: To widen the trimming width of trimming blade of a lawn mower. SOLUTION: This lawn mower is equipped with two pairs of oscillating blades 13 and 14 superposed so as to enable relative oscillation motion, eccentric cum 19 having two cum parts 19a and 19b each engaging with oscillating blades 13 and 14 and a rotation driving source 9 for rotating the eccentric cum 19. The lawn mower carries out mutually opposed oscillation motion of two pairs of oscillating blades 13 and 14 through cum parts 19a and 19b of the eccentric cum 19 rotated by rotation the driving source 9.
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