Floor nozzle for vacuum cleaners

Abstract

A floor nozzle for vacuum cleaners has a first position for vacuuming broad floor surfaces, and a second position for vacuuming narrow floor surfaces. The floor nozzle includes a suction head that has a base area with two broad sides and two narrow sides, and a tilt joint consisting of a channel connector piece molded onto the suction head and a pivotable channel section. A pipe elbow having a curvature of essentially 90° is connected with the channel section and has a connector end for a suction pipe. The channel section is pivoted out in the first position, so that the axis of rotation of the connection between the pipe elbow and the channel section is oriented at a downward slant. In the second position, the movable channel section is pivoted into the channel connector piece so far that the axis of rotation of the connection is oriented horizontally.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The invention relates to a floor nozzle for vacuum cleaners, having a first functional position for vacuuming broad floor surfaces, as well as a second functional position for vacuuming narrow floor surfaces. [0003] 2. The Prior Art [0004] A floor nozzle having the functional properties described is shown in German Patent No. DE-C 100 17 705. The suction head of the known floor nozzle has a base area delimited by two broad sides as well as two narrow sides, which area is essentially rectangular, and can be connected to a suction pipe by means of a two-axle joint, which joint contains a suction channel. The joint is configured as a cardan joint and has a suction head connector element that is inserted into a depression of the suction head that is configured as a half shell. It is difficult to seal the parts of the cardan joint that move relative to one another. [0005] A floor nozzle for vacuum cleaners is also descri...

AI Technical Summary

Benefits of technology

[0013] The movable channel section is pivoted out in the first functional position, so that the axis of rotation of the rotary connection between the pipe elbow and the movable channel section is oriented at a slant downwards towards the floor surface. The movable channel section, in the second functional position, is pivoted into the channel connector piece so far that the axis of rotation of the rotary connection is oriented horizontally. In the first functional position, the broad side of the suction head is oriented essentially perpendicular to a suction pipe that is connected at the connector end of the pipe elbow. During a forward movement of the floor nozzle, a pushing force is introduced into the suction head, and the force effect line of the pushing force is displaced into the region of the floor nozzle that lies in the rear, in the pushing direction. On the broad side that lies in the front, in the pushing direction, the suction head can easily perform tilting movements, so that it is easy to pass over carpet wrinkles and carpet edges. The floor nozzle according to the invention has good sliding properties on floor surfaces. Furthermore, the device is easy to handle when vacuuming both broad floor surfaces and narrow niches.

[0015] According to a preferred embodiment of the invention, the joint axis of the tilt joint is disposed in a region between the two broad sides of the suction head, at a distance from the broad side that lies in the rear, in the vacuuming direction. The suction head preferably has an indentation that forms a free space for the movement of the pipe elbow that is connected to the movable channel section, in its broad side that lies in the rear, in the vacuuming direction. In this connection, the joint axis of the tilt joint is preferably disposed within the indentation, in a region of the suction head that lies close to the floor. This results in a particularly good introduction of force for the pushing force.

Problems solved by technology

It is difficult to seal the parts of the cardan joint that move relative to one another.

In the known nozzles, stress is placed on the front region of the suction head when vacuuming broad floor surfaces, and this is disadvantageous for the movement progression.

In particular, it is difficult for such a suction head to move over carpet wrinkles and carpet edges.

However, the known floor nozzle is only suitable for vacuuming broad floor surfaces.

It is not possible to rotate the floor nozzle by 90° relative to the suction pipe.

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