US 12,660,972 B2Granted

Robot cleaner for climbing and cleaning stairs

AssigneeShanghai Rushen Robotics Co., Ltd

InventorsYun Long, Youdong Wang, Feng Zhu

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Abstract

Embodiments of the disclosure provide a robot cleaner for cleaning a stair. The robot cleaner includes a main body configured to rotate around a first shaft. The robot cleaner further includes at least one leg each configured to rotate around a second shaft. The robot cleaner also includes at least one connector each configured to connect each leg to the main body. Each connector comprises a first end attached to the first shaft and a second end attached to the second shaft. The robot cleaner is configured to climb the stair by first lifting the main body onto a tread of the stair through rotations of the main body and the at least one connector and then lifting the at least one leg onto the tread through rotations of the at least one connector and the at least one leg.

Claims20

Dependent claims

A robot cleaner for cleaning a stair, comprising:

a main body configured to rotate around a first shaft;
at least one leg each configured to rotate around a second shaft;
and
at least one connector each configured to connect each leg to the main body, wherein each connector comprises a first end attached to the first shaft and a second end attached to the second shaft,
wherein the robot cleaner is configured to climb the stair by following steps, comprising:
rotating the main body relative to the at least one connector and the at least one leg by 90 degrees;
rotating the main body and the at least one connector relative to the at least one leg to make the main body and the at least one connector be in a same plane and make the main body be vertical to the at least one leg;
rotating the main body relative to the at least one connector to make the main body be lifted on a tread of the stair;
and
lifting the at least one leg onto the tread through rotations of the at least one connector and the at least one leg.

7 more elements

A robot cleaner for cleaning a stair, comprising:

a main body configured to rotate around a first shaft;
a first leg connected to a first side of the main body through a first connector and configured to rotate around a second shaft;
and
a second leg connected to a second side of the main body through a second connector and configured to rotate around a third shaft, the second side opposing the first side,
wherein the robot cleaner is configured to climb the stair by following steps, comprising:
rotating the main body relative to the first connector and the second connector by 90 degrees;
rotating the main body, the first connector and the second connector relative to the first leg and the second leg to make the main body, the first connector, and the second connector be in a same plane and make the main body be vertical to the first leg and the second leg;
rotating the main body relative to the first connector and the second connector to make the main body be lifted on a tread of the stair;
and
lifting the first leg and the second leg onto the tread through rotations of the first connector, the second connector, the first leg, and the second leg.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/201,109Filed 23 May 2023
Published: US 2024/0389811 A128 Nov 2024
Granted: 23 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

A47L 9/2852
Characterised by the parts which are controlled: elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters…
A47L 9/009
Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices…:…
A47L 9/2805
Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means:…
A47L 11/4011
Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles,…:…