Blocked-grass lower-poking and upper-cutting mechanism for cleaning grass discharging passage of hand mower

Abstract

The invention relates to a blocked-grass lower-poking and upper-cutting mechanism for cleaning a grass discharging passage of a hand mower. According to the blocked-grass lower-poking and upper-cutting mechanism, a lower poking mechanism is mounted on a rear shaft of the bottom of the mower, and meanwhile, an upper cutting mechanism is mounted at a grass discharging port of the grass discharging passage of the mower; the lower poking mechanism contains grass discharging blades (j1) and direction-changing bevel gears (j2), the rotating direction of a third direction-changing bevel gear is reverse to that of a first direction-changing bevel gear and that of the rear shaft, and thus, the rotating and direction changing of the grass discharging blades (j1), which are connected with the third direction-changing bevel gear and sleeve the rear shaft, are achieved; and the upper cutting mechanism contains upper cutting blades (j3) and a belt-pulley belt (j4), and a rotating shaft of the upper cutting blades (j3) is driven by the belt-pulley belt (j4). The direction-changing bevel gears are Klingen-Berg cycloidal-tooth hypoid gears. At least one of the upper cutting blades (j3) of the upper cutting mechanism of the blocked-grass lower-poking and upper-cutting mechanism for cleaning the grass discharging passage of the hand mower has a bent segment, and a curve of the bent segment is a logarithmic spiral which has the characteristic that pressure angles are equal everywhere.

Description

technical field [0001] The invention relates to a lawn mower used for mowing lawns in courtyards, parks, roadsides and other places, and is a grass blocking mechanism for cleaning grass discharge passages of the hand-push mower. Applicable to a variety of models, there are three-wheel lawn mowers that use the flat rod rotation angle to shift the grass head to adjust the height of the front single wheel, and series-excited motor electric lawn mowers with chassis anti-collision safety belts and function wave disc brakes , there is a lawn mower with an anti-collision safety device located in the front of the lawn mower chassis and a wave disc brake with function in the middle of the lawn mower chassis, as well as a grass blocking device and an anti-breaking grass device driven by a motor. grass machine. Background technique [0002] Lawn mowers are widely used to mow grass in the manner chosen by people. When some pedestrians like and are used to using lawn mowers, they put a...

AI Technical Summary

Problems solved by technology

Anti-collision security and ensure braking. The grass blocking mechanism of the mower cleaning the grass discharge channel has always been a long-standing problem, because the rear axle is reversed and cannot discharge grass.

[0007]Why use a cord reel? Because of the long wires scattered on the ground, when the electric lawn mower mows back and forth, sometimes it is accidentally stepped on by feet or crushed by wheels, which affects safety; If the wire is not long enough, mowing is suspended, or the wire is managed manually, which increases safety hazards

Why put a cord reel on an electric lawn mower? Anyone who has used an electric lawn mower knows that weeds often leak when mowing, and they have to be re-mowed. Especially when the environment is complex, such as bushes mixed with the lawn, it is necessary to take several steps forward and several times and repeat the mowing from left to right. Grass; if the reel is placed far away, the wires near the lawn mower cannot be pulled in and out synchronously with the pull and stop in time, or they will fall to the ground limply, and there is a danger of being stepped on or crushed by wheels, or they cannot be pulled in and out in time. Line in and out

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