Sweeping assembly, cleaning appliance, and method for cleaning appliance

Abstract

The present invention relates to a cleaning appliance and a method for a cleaning appliance. In particular, a cleaning appliance is disclosed, comprising: a housing, comprising an opening facing toward a surface to be swept; a sweeping brush, having a connection part by means of which the sweeping brush is mounted in the housing, and being capable of rotating about a rotation axis by receiving a driving force, so as to perform a sweeping operation; and a toothed structure arranged close to an end of the sweeping brush, the toothed structure being provided between the housing and the sweeping brush and comprising multiple teeth, the multiple teeth extending from one of the housing and the sweeping brush toward the other of the housing and the sweeping brush. The cleaning appliance of the present invention is at least able to prevent or at least reduce the entry of foreign matter into a gap, as well as promptly trigger protection measures when necessary to remind a user to deal with the problem, in order to avoid failure due to melting of the housing and sweeping brush in a connection region.

Description

TECHNICAL FIELD[0001]The present invention relates to the technical field of automated cleaning, in particular to a cleaning appliance, a sweeping assembly for a cleaning appliance, and a method for a cleaning appliance.BACKGROUND ART[0002]An automatic cleaning appliance is an appliance capable of performing a cleaning operation automatically. Taking a handheld vacuum cleaner as an example, such an appliance comprises a sweeping assembly located at an extremity, the sweeping assembly at least comprising a sweeping brush and a housing for mounting the sweeping brush. The sweeping brush rotates at high speed in the housing and comes into contact with a surface to be swept, thereby separating foreign matter attached to the surface to be swept. The separated foreign matter is picked up by the sweeping brush or sucked into the housing by a suction means, finally being led into a foreign matter collection means.[0003]Some foreign matter such as hair tends to become wound around the sweepi...

AI Technical Summary

Benefits of technology

[0006]In response to the problem described above, the present invention provides a sweeping assembly for a cleaning appliance, a cleaning appliance, and a method for a cleaning appliance, in order to mitigate the shortcomings of the prior art. In particular, the present invention at least achieves the prevention or at least the reduction of entry of foreign matter into a gap, as well as the prompt triggering of protection measures when necessary to remind the user to deal with the problem, in order to avoid failure due to melting of a housing and a sweeping brush in a connection region.

Problems solved by technology

Some foreign matter such as hair tends to become wound around the sweeping brush, thereby giving rise to additional friction and hindering the rotation of the sweeping brush.

In addition, due to the fact that the sweeping brush is rotatably mounted on the static housing, there is inevitably a gap in a region of connection of the sweeping brush and the housing.

If this foreign matter cannot be cleared promptly, it will accumulate in the gap, resulting in increased rotational friction in the region of connection of the sweeping brush and the housing.

Under the action of the high-speed rotation of the sweeping brush, this increased friction will continuously generate a large amount of heat and significantly increase the temperature of the housing and sweeping brush in the region of connection, even to the point where the melting point of the materials is exceeded (the sweeping brush and housing generally being made of plastic materials), such that the materials of the housing and sweeping brush melt and deform in the region of connection, thus causing plastics and foreign matter such as hair to fuse together, and thereby causing the cleaning appliance to suffer failure.

However, the measures in the prior art still struggle to prevent the entry of foreign matter into the gap very effectively.

Furthermore, even if only a small amount of foreign matter is present in the gap, friction can still generate a large amount of heat under the action of continuous rotation.

Moreover, it is difficult to detect this small amount of foreign matter by existing techniques and promptly trigger protection measures to remind the user to perform cleaning, and consequently, more and more foreign matter enters the gap.

When protection is triggered, it is already too late; the plastic materials in the connection region have often already been melted, and hence failure occurs.

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