Lawnmower
AssigneeHonda Motor Co., Ltd.
InventorsTomoki Ito, Hideaki Kobayashi, Koji Kuriyagawa, Hajime Yoshimura
Life of this patent
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Abstract
A lawn mower includes a cutter blade having flaps and a flap drive mechanism. The flap drive mechanism includes a flap drive source and an intermediate power transmission unit. The intermediate power transmission unit is provided on a power transmission path between the flap drive source and the flaps and provided coaxially with a blade rotation axis. An output axis of a motor is provided coaxially with a blade rotation axis and the intermediate power transmission unit.
Claims12
A lawn mower comprising:
- a motor having an output axis;
- a cutter blade that includes
- a blade body that is rotatable about a blade rotation axis and
- a flap that has a changeable flap angle and is attached to the blade body, and
- that is driven and rotated driven by the motor;
- and
- a flap drive mechanism configured to drive the flap, wherein
- the flap drive mechanism comprises:
- a flap drive source that generates power for driving the flap;
- and
- an intermediate power transmission unit provided on a power transmission path between the flap drive source and the flap and provided coaxially with the blade rotation axis,
- the output axis of the motor is provided coaxially with the blade rotation axis and the intermediate power transmission unit.
2 The lawn mower according to claim 1, wherein the intermediate power transmission unit is a power steering unit that converts rotational driving power from the flap drive source into axial power along the blade rotation axis.
The lawn mower according to claim 2, wherein the power steering unit comprises a hollow cylindrical body including a hollow part along the blade rotation axis;
- and
- the rotational driving power of the motor is transmitted to the cutter blade through the hollow part of the power steering unit.
The lawn mower according to claim, comprising housing opened downward and containing the cutter blade, wherein the intermediate power transmission unit includes a driven rotating body to which rotational driving power from the flap drive source is transmitted and which is rotatable about the blade rotation axis;
- and
- the driven rotating body is provided between the motor and the housing.
Dependencies are inferred from the claim text.