US 11,812,689 B2Granted

Riding lawn mower having different starting modes

AssigneeNanjing Chervon Industry Co., Ltd.

InventorsDezhong Yang, Zhongyan Hou, Jicun Cai

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Abstract

A riding lawn mower includes a power output assembly including a mowing element, a cutting motor for driving the mowing element to move, and a cutting control module for controlling the cutting motor; a walking assembly including a walking wheel, a walking motor for driving the walking wheel to travel, and a walking control module for controlling the walking motor; and a first operating component configured to set starting modes of the walking motor. The first operating component has a first operating state configured to start the walking motor in a first starting mode, and a second operating state configured to start the walking motor in a second starting mode. In the first starting mode, the walking motor starts at a first starting acceleration. In the second starting mode, the walking motor starts at a second starting acceleration. The second starting acceleration is greater than the first starting acceleration.

Claims19

Dependent claims

A riding lawn mower, comprising:

a chassis;
a power output assembly supported by the chassis and comprising a mowing element, an electric cutting motor for driving the mowing element to move, and a cutting control module for controlling the cutting motor;
a drive assembly comprising a plurality of wheels supporting the chassis, an electric drive motor for driving at least one of the plurality of wheels to travel, and a drive control module for controlling the drive motor;
a first operating component supported by the chassis and coupled to the drive assembly to cause the drive motor to operate;
and
the first operating component configured to set a plurality of accelerating modes of the drive motor in response to operation of the first operating component, the first operating component having:
a first operating state configured to start the drive motor in a first starting mode, wherein in the first starting mode, the drive motor accelerates at a first starting acceleration in response to operation of the first operating component in a first manner;
and
a second operating state configured to start the drive motor in a second starting mode, wherein in the second starting mode, the drive motor accelerates at a second starting acceleration in response to operation of the first operating component in the first manner,
wherein the second starting acceleration is greater than the first starting acceleration,
wherein the first operating component is further configured to send a parking signal to trigger the riding lawn mower to enter a parking mode, and
wherein the drive control module is configured to:
in response to the parking signal, determine whether a rotational speed of the drive motor is less than or equal to a predefined speed threshold;
after determining that the rotational speed of the drive motor is less than or equal to the predefined speed threshold, apply a first torque opposite to a tendency of rotation of the drive motor to the drive motor, and the first torque is configured to enable the riding lawn mower to stand still in a position.

11 more elements

A riding lawn mower, comprising:

a chassis;
a power output assembly supported by the chassis and comprising a mowing element, an electric cutting motor for driving the mowing element to move, and a cutting control module for controlling the cutting motor;
a drive assembly comprising a plurality of wheels supporting the chassis, an electric drive motor for driving at least one of the plurality of wheels to travel, and a drive control module for controlling the drive motor;
a first operating component supported by the chassis and coupled to the drive assembly to cause the drive motor to operate;
and
the first operating component configured to set a plurality of accelerating modes of the drive motor in response to operation of the first operating component, the first operating component having:
a first operating state configured to start the drive motor in a first starting mode, wherein in the first starting mode, the drive motor accelerates at a first starting acceleration in response to operation of the first operating component in a first manner;
and
a second operating state configured to start the drive motor in a second starting mode, wherein in the second starting mode, the drive motor accelerates at a second starting acceleration in response to operation of the first operating component in the first manner,
wherein the second starting acceleration is greater than the first starting acceleration;
a power supply assembly configured to provide electric energy for the drive motor;
when the power supply assembly supplies a first amount of power, the drive motor accelerates at the first starting acceleration in the first starting mode, and the drive motor accelerates at the second starting acceleration in the second starting mode;
when the power supply assembly supplies a second amount of power, the drive motor accelerates at a third starting acceleration in the first starting mode, and the drive motor accelerates at a fourth starting acceleration in the second starting mode;
wherein the first starting acceleration is different from the third starting acceleration, and the second starting acceleration is different from the fourth starting acceleration.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/695,231Filed 15 Mar 2022 · continuation
Priority: CN 201911034246.X29 Oct 2019
Published: US 2022/0201932 A130 Jun 2022
Granted: 14 Nov 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

A01D 34/6818
Driving mechanisms: motor starting mechanisms
A01D 34/006
Mowers ; Mowing apparatus of harvesters: control or measuring arrangements
A01D 34/68
Hand-guided by a walking operator: with motor driven cutters or wheels
A01D 34/6812
Driving mechanisms: braking or clutching mechanisms