Robot cleaner
AssigneeLG Electronics Inc.
InventorsJaewon Jang, Jeongyun Kim, Inhyung Yang
Life of this patent
Estimating the term…
Abstract
Disclosed is a cleaner comprising a cleaner body, a front wheel rotatably provided in a front portion of the cleaner body, a rear wheel rotatably provided in a rear portion of the cleaner body, a first member attached to an outer circumferential surface of the front wheel and configured to contact with a cleaning object surface, a second member attached to an outer circumferential surface of the rear wheel and configured to contact with the cleaning object surface, a front motor rotating the front wheel, a rear motor rotating the rear wheel and a controller driving the front motor and the rear motor, wherein the controller controls the front motor and the rear motor to become rotated in the opposite directions while cleaning is performed.
Claims20
A cleaner comprising:
- a cleaner body;
- a front wheel rotatably provided in a front portion of the cleaner body;
- a rear wheel rotatably provided in a rear portion of the cleaner body;
- a first member attached to an outer circumferential surface of the front wheel and configured to contact a cleaning object surface;
- a second member attached to an outer circumferential surface of the rear wheel and configured to contact the cleaning object surface;
- a front motor rotating the front wheel;
- a rear motor rotating the rear wheel;
- a fluid tank that is configured to be positioned to vertically overlap the front wheel and not the rear wheel to concentrate a load of the fluid tank on the front wheel and to increase a friction force of the front wheel;
- and
- a controller driving the front motor and the rear motor,
- wherein the controller controls the front motor and the rear motor to rotate in opposite directions while cleaning is performed,
- wherein the cleaner body moves according to rotation of the front wheel and rotation of the rear wheel,
- wherein the front wheel includes a first front wheel and a second front wheel provided at respective sides of the cleaner body,
- wherein the front motor includes a first front motor to drive the first front wheel and a second front motor to drive the second front wheel,
- wherein at least one of a rotational axis of the first front wheel or a rotational axis of the second front wheel is not parallel with a rotational axis of the rear wheel,
- wherein the fluid tank includes:
- a front portion that vertically overlaps the front wheel, and
- a rear portion that is positioned between the front wheel and the rear wheel,
- wherein the front portion of the fluid tank includes a front surface having a convex shape when viewed in plan to overlap the first front wheel and the second front wheel and to be positioned behind the rotational axis of the first front wheel and the rotational axis of the second front wheel, a portion of the front surface of the fluid tank being inclined downward in front-to-rear direction to correspond to a shape of the outer circumferential surface of the front wheel, and
- wherein the cleaner body includes:
- first and second front cylinder regions provided at respective sides of the cleaner body and angled to correspond to the rotational axes of the first and second front wheels to cover the first and second front wheels,
- a rear cylinder region configured to cover the rear wheel, and
- a middle region that is narrower than the first and second front cylinder regions and the rear cylinder region in a left-to-right direction and configured to cover at least a portion of the fluid tank.
Dependencies are inferred from the claim text.