Locking device for enlengthening tube of vacuum cleaner

Abstract

A locking device for an extension pipe of a vacuum cleaner, which requires a reduced number of parts and simple assembling, includes a holder having a first and a second connection parts formed at both ends, and a locking hole in correspondence to a fixing hole formed in the extension pipe, the first and the second connection parts being connected to the operation handle and the extension pipe, respectively, and the locking hole being formed at a side of the second connection part, a cap connected to an outer surface of the second connection part of the holder, and comprising an elastic locking member integrally formed therein and elastically biased toward the locking direction, the elastic locking member having a hook protruded from the inside of the holder through the locking hole into the second connection part to thereby lock the extension pipe, and an unlocking lever pivotally disposed on the outer surface of the holder to be pivoted on an axis, and comprising an operation end being connected with a free end of the elastic locking member and a user operation button part extended from the operation end.

Description

technical field [0001] The invention relates to a locking device for an extension tube of a vacuum cleaner. Background technique [0002] figure 1 A conventional vacuum cleaner is shown. like figure 1 As shown, a conventional vacuum cleaner includes a cleaner body 1 mounting major components such as a vacuum generating unit, a flexible hose assembly 10 connected to the cleaner body 1 and including an operating handle 11 that moves along the surface to be cleaned and has a The brush assembly 20 of the extension tube 21 on the handle 11 , and the extension tube locking device 30 for detachably supporting the operation handle 11 and the addition tube 21 . [0003] The extension tube locking device 30 enables the user to use various auxiliary brushes (not shown), thereby enabling cleaning of various places such as recesses of rooms. Specifically, the extension tube locking device 30 maintains the connection of the brush assembly 20 or the auxiliary brush with the operating h...

AI Technical Summary

Problems solved by technology

[0011] However, according to the conventional locking device for the extension tube of the vacuum cleaner, since the locking member 50 such as having the hook portion 51 and the button portion 52 integrally formed with the hook portion 51 is required, and the locking member 50 is returned to the original The additional parts of the elastic member 60 in the position, therefore, increases the number of parts, and the assembly process also becomes complicated

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