Walk-behind self-propelled machine
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsRonggen Zhu, Liang Chen
Life of this patent
Estimating the term…
Abstract
A walk-behind self-propelled machine includes: a body, wheels, a handle connected to the body, a motor, a driver coupled to the motor and driven by the motor, and a follower coupled to the wheels and enabled to drive the wheels to rotate, and a clutch. The clutch allows the driver to transmit power to the follower when the clutch is in a first position, the clutch cuts off a power transmission path between the motor and the wheels when the clutch is in a second position, the clutch is rotatably mounted to the driver, the clutch is in contact with the follower when the clutch rotates to the first position, and the clutch is disengaged from the follower when the clutch rotates to the second position.
Claims21
A walk-behind self-propelled machine, comprising:
- a body;
- a plurality of wheels for supporting the body;
- a handle connected to the body;
- a motor for driving at least one of the plurality of wheels to rotate;
- a driver coupled to the motor and driven by the motor;
- a follower coupled to the at least one of the plurality of wheels and enabled to drive the at least one of the plurality of wheels to rotate;
- and
- a clutch switchable between a first position and a second position by a friction force, wherein the clutch allows the driver to transmit power to the follower when the clutch is in the first position, the clutch cuts off a power transmission path between the motor and the at least one of the plurality of wheels when the clutch is in the second position, the clutch is rotatably mounted to the driver, the clutch is in contact with the follower when the clutch rotates to the first position, and the clutch is disengaged from the follower when the clutch rotates to the second position.
A walk-behind self-propelled machine, comprising:
- a body;
- a plurality of wheels for supporting the body;
- a handle connected to the body;
- a motor for driving the plurality of wheels to rotate;
- a driver coupled to the motor and driven by the motor;
- a follower coupled to the plurality of wheels and enabled to drive the plurality of wheels to rotate;
- and
- a clutch switchable between a first position and a second position by a friction force wherein the clutch allows the driver to transmit power to the follower when the clutch is in the first position, the clutch cuts off a power transmission path between the motor and the plurality of wheels when the clutch is in the second position, the clutch is rotatably mounted to the follower, the clutch is in contact with the driver when the clutch rotates to the first position, and the clutch is disengaged from the driver when the clutch rotates to the second position.
A lawn mower, comprising:
- a body;
- a plurality of wheels for supporting the body;
- a handle connected to the body;
- a motor for driving the plurality of wheels to rotate;
- a driver coupled to the motor and driven by the motor;
- a follower coupled to the plurality of wheels and enabled to drive the plurality of wheels to rotate;
- and
- a clutch switchable between a first position and a second position wherein the clutch allows the driver to transmit power to the follower when the clutch is in the first position, the clutch cuts off a power transmission path between the motor and the plurality of wheels when the clutch is in the second position, the clutch is rotatably mounted to the follower, the clutch is in contact with the driver when the clutch rotates to the first position, and the clutch is disengaged from the driver when the clutch rotates to the second position,
- wherein the clutch comprises a connecting portion, a moving portion, and a driving portion, the connecting portion is rotatably mounted to the follower, the moving portion and the driving portion are respectively connected to the connecting portion or integrally formed with the connecting portion, the motor has a motor shaft, the moving portion has a disconnected position and a driving position with respect to the follower, the driving portion drives the moving portion to switch between the disconnected position and the driving position, the motor shaft drives the plurality of wheels to rotate when the moving portion is in the driving position, and the plurality of wheels rotate freely with respect to the motor shaft when the moving portion is in the disconnected position, and
- wherein the driver is a ratchet wheel, the follower is a gear, and the driving portion and the moving portion are arranged on a same side of the follower along a thickness direction of the follower.
Dependencies are inferred from the claim text.