Three part tube

Abstract

This invention relates to a telescopic vacuum cleaner tube comprising a first inner tube, a second inner tube, and an outer tube, wherein the first and second inner tubes are arranged to form first and second telescopic links relative to first and second end portions of the outer tube, respectively. The outer tube forms the intermediate tube of the three-part tube while at the same time being fully accessible in any position, whereby one common grip for operating both of the two respective telescopic links, formed by the first and second inner tubes and the intermediate outer tube, of the three part telescopic tube is obtained.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a telescopic tube for a vacuum cleaner, and more particularly to a three part telescopic tube.BACKGROUND OF THE INVENTION[0002]The idea of using telescopic tubes to be able to adjust the length of a vacuum cleaner tube is known. One advantage with telescopic vacuum cleaner tubes is to be able to optimize the tube length for a specific cleaning task or for the height of a person that is using the vacuum cleaner. Telescopic tubes also provide the benefit of minimizing the length of the tube when not in use, thus facilitated storage is provided.[0003]The basic concept of telescopic tubes is to have an inner tube that is movably arranged within an outer tube. The tubes are further provided with a locking member, for instance a simple form of recess and engagement means that is released by means of a control mechanism, for instance by pressing down a release button, while the user pushes or pulls out the movable tube with respe...

AI Technical Summary

Benefits of technology

[0007]Thus, there is provided a three-part telescopic tube for a vacuum cleaner, where the outer tube encompasses two inner tubes that each are arranged to form a telescopic link at a respective end of the outer tube. Hence, the outer tube forms the intermediate tube of the three-part tube while it at the same time is fully accessible in any position: the fully extended position, the fully retracted position or any intermediate position between these positions. Thus both tubes are easily accessible at their respective ends at all times, and the total length of the tube is easily adjustable.

[0019]In accordance with an embodiment of the telescopic tube for a vacuum cleaner as defined in claim 11, at least one of the first and second inner tubes is connectable to a vacuum cleaner nozzle. According to an exemplary embodiment, wherein the first inner tube has a smaller diameter than the second inner tube, it may be more favorable to connect the vacuum cleaner nozzle to the first inner tube than the second inner tube. Due to the first inner tube having a smaller diameter than the second inner tube, the air steam will flow from a smaller diameter tube to a greater diameter tube, reducing the risk that dust particles in the air stream will clog the tube or that larger debris will get stuck further up the tube. Furthermore, placing the first inner tube with the smallest diameter closest to the vacuum cleaner nozzle may be favorable to the weight distribution of the vacuum cleaner tube, and may make the telescopic tube easier to manoeuvre.

Problems solved by technology

A problem with this known three-part telescopic tube is that the adjusting the length of the tube by operating the telescopic links can be experienced as troublesome.

Images