Lawn mower robot
First Claim
1. A lawn mower robot, comprising:
- an inner body;
an outer cover configured to surround an outer side of the inner body;
a plurality of blades rotatably provided on a bottom surface of the inner body to cut grass;
casters pivotably provided near front sides of the inner body to be pivotable about a rotation shaft;
wheels rotatably provided near rear sides of the inner body and configured to roll on a surface;
a driving unit configured to drive the wheels; and
a sensor unit configured to sense whether one or more of the casters is lifted off the surface to stop rotation of the wheels by the driving unit,wherein the sensor unit includes a drop switch configured to sense a downward movement of one or more of the casters when the one or more of the casters is lifted off the surface to be suspended in air,wherein the sensor unit includes;
a shaft supporter received in a lower portion of the inner body and configured to be movable up and down, the shaft supporter provided to surround the rotation shaft of each caster and support the rotation shaft to rotate in place; and
a lowering protrusion formed on an outer circumferential surface of the shaft supporter,wherein, when one or more of the casters is lowered relative to the inner body, the lowering protrusion is brought into contact with the drop switch to activate the drop switch and stop rotation of the wheels.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure relates to a lawn mower robot, including an inner body; an outer cover configured to surround an outer side of the inner body; a plurality of blades rotatably provided on a bottom surface of the inner body to cut grass; casters pivotably installed at both front sides of the inner body, respectively, to be pivotable about a rotation shaft; wheels rotatably mounted at both rear sides of the inner body, respectively; a driving unit configured to drive the wheels; and a sensor unit configured to sense whether or not the caster is lifted from the ground, wherein the sensor unit comprises a drop switch configured to sense the lowering of the caster when the caster is lowered in a state of being floated in the air.
24 Citations
19 Claims
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1. A lawn mower robot, comprising:
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an inner body; an outer cover configured to surround an outer side of the inner body; a plurality of blades rotatably provided on a bottom surface of the inner body to cut grass; casters pivotably provided near front sides of the inner body to be pivotable about a rotation shaft; wheels rotatably provided near rear sides of the inner body and configured to roll on a surface; a driving unit configured to drive the wheels; and a sensor unit configured to sense whether one or more of the casters is lifted off the surface to stop rotation of the wheels by the driving unit, wherein the sensor unit includes a drop switch configured to sense a downward movement of one or more of the casters when the one or more of the casters is lifted off the surface to be suspended in air, wherein the sensor unit includes; a shaft supporter received in a lower portion of the inner body and configured to be movable up and down, the shaft supporter provided to surround the rotation shaft of each caster and support the rotation shaft to rotate in place; and a lowering protrusion formed on an outer circumferential surface of the shaft supporter, wherein, when one or more of the casters is lowered relative to the inner body, the lowering protrusion is brought into contact with the drop switch to activate the drop switch and stop rotation of the wheels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lawn mower robot, comprising:
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an inner body; an outer cover configured to surround an outer side of the inner body; a plurality of blades rotatably provided on a bottom surface of the inner body to cut grass; casters pivotably provided near front sides of the inner body, to be pivotable about a rotation shaft; wheels rotatably provided near rear sides of the inner body and configured to roll on a surface; and a driving unit configured to drive the wheels, wherein the driving unit includes; a housing configured to receive a drive motor and a plurality of gears for transmitting power of the drive motor to the wheels, a first portion of the housing being received in the inner body; and a housing supporter configured to fasten the housing to a side surface of the inner body, wherein a second portion of the housing protrudes from the inner body to an outside of the inner body, the second portion of the housing being coupled to and supported by the housing supporter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification