Dust collector roller

Abstract

The invention relates to an idler wheel of vacuum dust-collector which inserts the inner wheel into the casting mould to form the outer wheel without using special combination element, to integrate the inner and outer wheels as a whole. The inventive idler wheel comprises: a lower part to generate suction force; an outer wheel contacting the ground when moving machine body; an inner wheel embedded into the inner side of outer wheel to support the weight of machine body; and a rotational shaft inserted and mounted at the centers of inner and outer wheels with the rotation function. Wherein, the rotational shaft is formed by an anti-drop groove along the periphery with a certain depth to insert the stop ring S; and a friction part beside the anti-drop groove along the periphery with a certain length of projection. Said structure can avoid the slide between the inner and outer wheel and reduce the producing process and cost.

Description

technical field [0001] The present invention relates to a vacuum cleaner, and more specifically to the invention of a vacuum cleaner roller whose rotating shaft is fixed under the simultaneous action of an inner wheel and an outer wheel without using special joint parts. Background technique [0002] first with figure 1 As shown, a brief introduction is made to the existing general vacuum cleaners. As shown in the figure, a general vacuum cleaner is composed of the following parts: a body 20 that contains functional parts (not shown) that can suck in foreign matter on the ground; Suction nozzle 60. [0003] The above-mentioned body 20 is composed of the following parts: the lower body 22 that includes the components (not shown) of the suction function; the upper part that prevents the above-mentioned functional parts included in the lower body 22 from falling out, and includes other hidden parts (not shown) of the vacuum cleaner. Airframe 24. In this way, the appearance ...

AI Technical Summary

Problems solved by technology

[0018] That is, because the binding force between the anti-rotation groove 82 and the anti-rotation protrusion 72 for fixing the inner wheel 80 and the outer wheel 70 is not large enough, the anti-rotation protrusion 72 may be worn or damaged after the vacuum cleaner is used for a long time.

[0019] At this time, as the anti-rotation protrusion 72 is worn or damaged, the binding force between the inner wheel 80 and the outer wheel 70 will be reduced, and the roller R will idle, which will make it difficult to move the body 20 during cleaning.

[0020] Moreover, because the rotating shaft 90 is only constrained by the inner wheel 80, it is easy to cause the center of the inner wheel 80 to be damaged due to the excessive impact force transmitted to the roller R when the body 20 crosses obstacles such as a threshold.

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