JP2007268042A - Suction device for vacuum cleaner and vacuum cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce harsh sounds in use and improve the durability of a vacuum cleaner in a suction device for the vacuum cleaner. <P>SOLUTION: This telescopic suction device consisting of a plurality of pipes A10, B11 and C12 having different pipe diameters is so formed that the plurality of pipes A10, B11 and C12 have holes 15, 16 and 17 respectively with the pipes contracted, a part or the whole of the holes 15, 16 and 17 are superposed to form a communication hole penetrating through the inside of the pipe A10 positioned on the innermost side and the outside of the pipe C12 positioned in the outermost. Despite of the extended/contracted state of the pipe, this constitution can secure suction air from the plurality of holes or the communication hole consisting of the plurality of holes and lower the velocity of the suction air from the tip of the suction device of the vacuum cleaner to reduce the harsh sounds. This constitution can also eliminate an unnatural force from being applied to an electric blower and a hose to improve the durability. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a retractable vacuum cleaner suction tool suitable for cleaning a clearance and the like, and an electric vacuum cleaner using the same.

  A conventional vacuum cleaner suction tool will be described with reference to FIG.

FIG. 7 shows a gap nozzle for a conventional vacuum cleaner. The telescopic nozzle body 20 is composed of a tip side nozzle 20a and a root nozzle 20b. A first protrusion 21 is formed at the tip of the tip side nozzle 20a, and a brush 23 is attached thereto. The first protrusion 21 also serves as a hook for pulling out the tip side nozzle 20a from the root nozzle 20b (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-34771

  However, in the above conventional vacuum cleaner suction tool, the tip of the suction tool should be as small as possible in order to clean narrow gaps such as between furniture, and the brush 23 or the like is attached. It becomes smaller and the speed of the intake air by suction of the vacuum cleaner is faster and the sound becomes louder. Also, if the suction tool is made narrow so that gaps between narrower furniture can be cleaned, the opening area will be reduced, resistance to ventilation will increase, and excessive force will be applied to the electric blower and hose of the vacuum cleaner body, reducing durability. There was a problem. Furthermore, if the tip side nozzle 20a and the root nozzle 20b are fixed in the extended position, the expansion / contraction operation becomes hard, and even if the first protrusion 21 is hooked, the tip side nozzle 20a and the root part nozzle 20b are difficult to expand / contract. There was a problem that the side nozzle 20a could not be fixed to the root nozzle 20b side and would enter the root nozzle 20b during use. An object of the present invention is to provide an easy-to-use vacuum cleaner suction tool capable of reducing sound during use and improving the durability of the vacuum cleaner, and a vacuum cleaner using the same.

  In order to solve the above-mentioned conventional problems, the vacuum cleaner suction tool of the present invention is configured by a plurality of pipes having different pipe diameters and can be expanded and contracted. In a state where the pipe is contracted, a part or all of the holes are overlapped to form a communication hole that connects the inner side of the innermost pipe and the outer side of the outermost pipe. .

  As a result, air can be sucked from a plurality of holes or a communication hole composed of a plurality of holes regardless of the expansion and contraction state of the pipe, so that the speed of the suction air from the tip of the vacuum cleaner suction tool can be reduced, and an unpleasant sound can be produced. Can be reduced. In addition, even if the tip of the vacuum cleaner suction tool is clogged with dust, sufficient intake air can be secured from the communication holes consisting of multiple holes or multiple holes, so that excessive force is applied to the electric blower or hose. Durability can be improved without incident.

  The vacuum cleaner suction tool of the present invention can reduce the annoying noise because it can suck air from a plurality of holes or a communication hole composed of a plurality of holes regardless of the expansion and contraction state of the pipe. Durability can be improved without applying excessive force.

  1st invention is the suction tool comprised with several pipes from which a pipe diameter differs, and can extend-contract, A hole is provided in each outer periphery of the said several pipe, and a part or all of the said hole is in the state which contracted the pipe Are overlapped to form a communication hole that communicates the inner side of the innermost pipe and the outer side of the outermost pipe. As a result, air can be sucked from a plurality of holes or a communication hole composed of a plurality of holes regardless of the expansion and contraction state of the pipe, so that the speed of the suction air from the tip of the vacuum cleaner suction tool can be reduced, and an unpleasant sound can be produced. Can be reduced. In addition, even if the tip of the vacuum cleaner suction tool is clogged with dust, sufficient intake air can be secured from the multiple holes or the communication hole made up of multiple holes, so that excessive force is applied to the electric blower or hose. Durability can be improved.

  In the second invention, the plurality of holes forming the communication holes of the first invention are provided with different sizes of the respective opening areas, and are provided in the pipe located on the innermost side in a contracted state of the pipe. The opening area of the hole was made the smallest, and the opening area of the hole provided in the pipe was increased toward the outer pipe. As a result, it is possible to reduce annoying and wind noise generated in the overlapping communication holes when the cleaning work is performed in a state where the pipe is contracted.

  In the third invention, the opening area of the communication hole of the first invention is at least equal to or larger than the minimum opening area of the plurality of holes forming the communication hole. As a result, even when the pipe is contracted, sufficient intake air can be secured from the communication hole, so that the speed of the suction air from the tip of the vacuum cleaner suction can be reliably reduced to a predetermined level, and an unpleasant sound can be reliably ensured. Can be reduced. Further, even when the pipe is contracted, sufficient intake air can be secured from the communication hole, so that durability can be reliably improved without applying excessive force to the electric blower or hose.

  4th invention is the vacuum cleaner provided with the suction tool for vacuum cleaners of any one of 1st-3rd invention, and provides the vacuum cleaner which can clean it easily using the gap of furniture etc. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, the cleaner for vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS.

  FIG. 1 is an overall perspective view of a vacuum cleaner suction tool according to the present invention and a floor moving type vacuum cleaner connected thereto.

  In the figure, a vacuum cleaner 1 includes a hand handle (hand control tube) 4 having a vacuum cleaner suction tool 3 attached to the tip thereof in a detachable manner, and a vacuum cleaner body 7 extending from the hand handle 4 via a hose joint 5. The vacuum cleaner main body 7 incorporates an electric blower (not shown) and a control member (not shown) for controlling the same.

  Next, the detail of the said suction tool 3 for vacuum cleaners is demonstrated using FIGS. 2-6.

  As shown in FIG. 2, the vacuum cleaner suction tool 3 includes a pipe A10, a pipe B11, a pipe C12, a pipe A10, and a brush body 14 that is detachably attached to the tip of the pipe A10. is doing. Reference numeral 15 denotes a hole A provided on the side surface of the pipe A. Similarly, a hole B16 is formed in the pipe B11 and a hole C17 is formed in the pipe C12. As described above, according to the present embodiment, since a plurality of holes are provided on the side surface of the pipe, air is sucked not only from the front end opening of the pipe A10 but also from a plurality of holes. The wind speed can be reduced and the annoying sound is reduced. Moreover, since sufficient intake air can be secured from a plurality of holes in addition to the tip, durability is improved without applying excessive force to the electric blower or hose.

  As shown in FIG. 3, the holes are formed at overlapping positions when the pipes are contracted, and the communication hole 18 is formed by three holes. The size of the opening area of these three holes A15, B16, and C17 is such that the tip side is small as hole A <hole B <hole C. As described above, according to the present embodiment, since the three holes are overlapped with each other, the communication hole 18 is formed in addition to the intake air at the tip opening of the pipe A10 even in the contracted state. Even if it performs, the wind speed of a suction wind can fall from a front-end | tip and an unpleasant sound can be reduced. In addition, a plurality of holes have different opening areas, and the opening area of the hole A15 on the front end side is made small, so that they are generated in the overlapping communication holes 18 when cleaning is performed with the pipes contracted. It can reduce the annoying wind noise.

  4, 5, and 6, reference numeral 19 denotes a push button provided on the pipe B <b> 11. When the push button 19 is pressed, it is prevented from being contracted by the convex portion 20 formed on the inner wall of the pipe B <b> 11. Since the claw portion 21 formed on the pipe A10 is displaced inward and the engagement is released, the pipe A10 is accommodated in the pipe B11. Since the slit portions 22 and 23 are provided on the outer periphery of the push button 19 and the claw portion 21, the push button 19 and the claw portion 21 can be operated smoothly. Further, the width B25 of the push button 19 is wider than the width A24 of the claw portion 22. Therefore, even if the push button 19 is pressed strongly, it is possible to prevent an excessive force from being applied to the claw portion 22, and thus durability can be improved.

  As mentioned above, the vacuum cleaner suction tool and the vacuum cleaner using the same according to the present invention can reduce harsh sounds. Moreover, since durability can be improved without applying an excessive force to an electric blower or a hose, it can be applied to a suction tool such as a commercial vacuum cleaner.

Whole perspective view of the vacuum cleaner which connected the suction tool for vacuum cleaners of Embodiment 1 of this invention Plan view of the vacuum cleaner suction tool extended Top view of the vacuum cleaner suction tool in a contracted state Cross section of the main part of the vacuum cleaner suction tool Detailed view around the push button of the vacuum cleaner suction tool Detailed view around the claw part of the vacuum cleaner suction tool Cross-sectional view of a conventional vacuum cleaner suction tool

Explanation of symbols

3 Vacuum cleaner suction tool 7 Vacuum cleaner body 10 Pipe A
11 Pipe B
12 Pipe C
14 Bristle brush body 15 Hole A
16 hole B
17 Hole C
18 Communication hole 19 Push button 21 Claw part 22, 23 Slit 24 Width A
25 width B

Claims (4)

In the suction tool composed of a plurality of pipes having different pipe diameters and extending and contracting, a hole is provided in each of the outer circumferences of the plurality of pipes, and when the pipes are contracted, a part or all of the holes are overlapped, and the innermost The vacuum cleaner suction tool which forms the communicating hole which connects the inner side of the pipe located in the outer side, and the outer side of the pipe located in the outermost side. The plurality of holes forming the communication holes are provided with different sizes of the opening areas so that the opening area of the hole provided in the innermost pipe is minimized when the pipe is contracted. The vacuum cleaner suction tool according to claim 1, wherein an opening area of a hole provided in the pipe increases toward an outer pipe. The suction tool for a vacuum cleaner according to claim 1, wherein an opening area of the communication hole is at least equal to or larger than a minimum opening area of the plurality of holes forming the communication hole. The vacuum cleaner provided with the suction tool for vacuum cleaners of any one of Claims 1-3.

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