US 2025/0049281 A1Published application

Cleaner

AssigneeLG Electronics Inc.

InventorSangchul LEE

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Abstract

A cleaner includes a rotation prevention assembly which selectively fixes a first rotation member that rotates the body about a first rotational axis and a second rotation member that rotates the body about a second rotational axis. The rotation prevention assembly includes: a catching groove in the first rotation member; and a fixing member rotatably coupled to the second rotation member and inserted into the catching groove. The fixing member extends in the direction of gravity and freely rotates. When the angle between the second rotational axis and the ground is greater than a predetermined angle, the fixing member is caught by the catching groove, preventing rolling, and yawing allows the cleaner to be operated. When the angle between the second rotational axis and the ground is less than a predetermined angle, the fixing member is not inserted into and caught by the catching groove, and rolling prioritizes over yawing.

Claims14

Dependent claims

A cleaner comprising:

a cleaning module which sucks outside air;
a body which provides a suction force to the cleaning module;
a first rotation member which is disposed between the cleaning module and the body and rotates the body about a first rotational axis disposed in one direction;
a second rotation member which is disposed between the first rotation member and the body and rotates the body about a second rotational axis in a direction intersecting the first rotational axis;
and
a rotation prevention assembly which selectively fixes the first rotation member and the second rotation member,
wherein the rotation prevention assembly includes:
a catching groove formed in the first rotation member;
and
a fixing member which is rotatably coupled to the second rotation member, extends in the direction of gravity, has a portion thereof that is inserted into the catching groove when an angle between the second rotational axis and the ground is a first angle, and is not inserted into the catching groove when the angle between the second rotational axis and the ground is a second angle.

7 more elements

Dependencies are inferred from the claim text.