To provide an eccentric cam structure having a simple structure for preventing disengagement between blades and eccentric cams in the blades of a horticultural hedge trimer, etc., which are reciprocated back and forth or right and left by engagement between cam holes of the blades and the eccentric cams.
Recessed grooves 21 and 22 are formed on the outer peripheral surfaces of the eccentric cams 14 and 15 engaged with the cam holes 12 and 13 formed on the blades 2 and 3 such as blade plates and the inner peripheral edges of the cam holes 12 and 13 are engaged with the recessed grooves formed on the outer peripheral surfaces of the eccentric cams. Force acting on the blades by the eccentric cams acts as force drawing the blades near the central directions of the thickness of the eccentric cams to maintain the engagement states between the blades and the eccentric cams. Recessed groves are formed on the inner peripheral surfaces of the cam holes of the blades and the outer peripheral edges of the eccentric cams are engaged with the recessed grooves.
KOBAYASHI KAZUAKI
Susumu Fukuda
Norihiko Fujita