WO2003101272A1 - A connection between a pipe and a nozzle - Google Patents

A connection between a pipe and a nozzle Download PDF

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Publication number
WO2003101272A1
WO2003101272A1 PCT/DK2003/000363 DK0300363W WO03101272A1 WO 2003101272 A1 WO2003101272 A1 WO 2003101272A1 DK 0300363 W DK0300363 W DK 0300363W WO 03101272 A1 WO03101272 A1 WO 03101272A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
sole
pipe
suction sole
nozzle
Prior art date
Application number
PCT/DK2003/000363
Other languages
French (fr)
Inventor
Hedelund Anders Nielsen
Original Assignee
Nilfisk Advance A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DKPA200200853 priority Critical
Priority to DKPA200200853 priority
Application filed by Nilfisk Advance A/S filed Critical Nilfisk Advance A/S
Publication of WO2003101272A1 publication Critical patent/WO2003101272A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02Nozzles
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24Hoses or pipes; Hose or pipe couplings
    • A47L9/242Hose or pipe couplings

Abstract

The invention relates to connecting the suction sole of a nozzle with the pipe of vacuum cleaner so as to ensure that the suction sole is not lifted from the surface across which it is to be moved to and fro, when the pipe is moved with a view to moving the suction sole across the surface. According to the invention, the suction sole and the pipe are connected with each other by a bellows. Further, a rotatable link is provided transversely to the pipe in the vicinity of the bellows, said rotatable link being secured at one end to the shaft of a wheel, while the other end is rotatably connected with the short outer sides of the suction sole which extend transversally to the longitudinal axis of the pipe.

Description

A CONNECTION BETWEEN A PIPE AND A NOZZLE

The invention relates to a connection between a pipe and a nozzle having a suction sole, said suction sole having a suction channel extending towards a surface to be cleaned.

Usually, the nozzle and associated suction sole of a vacuum cleaner are connected with the actual vacuum cleaner by a vacuum cleaner hose which extends from the vacuum cleaner and is terminated by a bent pipe, which is connected with a straight pipe connected with a nozzle via a rotatable coupling.

The movement of the nozzle to and fro is performed by movement of the bent pipe, which transfers the movement via the straight pipe to the nozzle having a suction sole. In operation, the suction sole of the nozzle will frequently be pressed down against the surface to be cleaned during the forward movement, which results in an increased resistance to movement on the surface. During the return movement, the opposite takes place, viz. that the suction sole is lifted from the surface, which results in reduced suction capacity and thereby reduced cleaning of the surface to be cleaned.

This has meant in practice that there are certain limits to how great a suction can be applied to the suction sole, as a very strong suction in combination with the suction sole being pressed against the surface means that the suction sole will almost get stuck, since a movement will require overcoming of frictional forces from the edge of the suction sole and from the suction itself on the suction sole.

Since, however, it is desirable to utilize the efficiency of vacuum cleaners better, which may take place merely by increasing the internal diameter of the suction channel of the suction sole, it is desirable to provide a connec- tion between a nozzle for a vacuum cleaner and its vacuum cleaner hose, such that there is a minimum risk of the suction sole of the nozzle being lifted from the surface or being pressed against it in the use of the vacuum cleaner, thereby providing an optimum cleaning capacity, while it is just suction forces that are to be overcome in the use of the vacuum cleaner and the nozzle.

Thus, an object of the invention is to provide a connection between a vacuum cleaner hose and its nozzle having a suction sole, which is adapted to prevent the nozzle with the suction sole from being pressed down into or lifted away from the surface to be cleaned during manipulation of the vacuum cleaner hose.

The object of the invention is achieved by a connection of the type stated in the introductory portion of claim 1 , which is characterized in that the pipe and the suction sole of the nozzle are connected with each other by a resilient part, and that the suction sole of the nozzle is connected with the pipe by a rotatable link such that the suction sole is rotatably connected with the pipe.

The resilient part will hereby be able to accommodate all undesired movements of the vacuum cleaner hose, while the rotatable link will transfer the horizontal pull and push movements to the suction sole of the nozzle, without any risk of the suction sole being tilted relative to the surface to be treated or being pressed down into it.

As stated in claim 2, the resilient part is formed by a bellows, which provides the advantage that it is easy to achieve a tight connection between the suction sole and the vacuum cleaner.

An expedient way of constructing the rotatable link is, as stated in claim 3, that the rotatable link is formed by a hinge, and, as stated in claim 4, that the hinge consists of two parts, where one part is arranged in a shell or a part of a shell, while the other part is arranged in the suction sole, and, as stated in claim 5, that one part is a hole, while the other part is a pin, it be- ing hereby possible to design the nozzle such that it resembles ordinary commercially available nozzles whose design is frequently adapted to the design of a given vacuum cleaner.

To ensure that the movement of the nozzle with the suction sole has the least possible mechanical resistance force, it is an advantage if, as stated in claim 6, the pipe near the resilient part has at least one wheel with a transverse shaft which, in addition to the wheel or wheels, also carries one end of the rotatable link.

To additionally stabilize the movement of the suction sole of the nozzle across the surface, it is an advantage if, as stated in claim 7, the suction sole is formed as a box having two long and two short sides, said long sides being perpendicular to the pipe, and that the rotatable link is connected with the short sides on the suction sole near the surface of the suc- tion sole.

When, as stated in claim 8, the suction sole is rotatably connected about an axis which extends symmetrically about the long sides of the box relative to the suction channel provided in the suction sole, it is advantageously en- sured that the suction sole can rotate about an axis which is parallel with the pipe, and since it is positioned symmetrically relative to the suction channel close to the surface to be cleaned, it will engage the surface stably without any great risk of tilting.

With a view to improving the suction strength of a given vacuum cleaner, it is expedient, as stated in claim 9, that the internal diameter of the suction channel of the suction sole constitutes about 35% of the area of the suction sole, and, as stated in claim 10, that the internal diameter of the suction channel of the suction sole has a four-sided shape.

The invention will now be explained more fully with reference to the drawing, in which

fig. 1 shows a known nozzle having a suction sole seen obliquely from the front,

fig. 2 shows the nozzle of fig. 1 seen toward the suction sole,

fig. 3 shows a sectional view of the nozzle according to the invention with the suction sole seen from the side, while

fig. 4 shows one half of the nozzle of fig. 4 along the section I - I in fig. 3.

In figs. 1 and 2, the numeral 1 designates a nozzle which has a suction sole 5 of a known type for a vacuum cleaner (not shown). As will be seen, the nozzle 1 has a button 6 on its surface 2, said button being intended to move a brush 13 into or out of the nozzle with a view to adapting the nozzle to clean various surfaces, such as carpets or smooth surfaces, e.g. floors.

Further, the surface 5 of the nozzle has arranged thereon a rotatable link 3 which is adapted to transfer movements from a vacuum cleaner hose (not shown), which is manipulated by a user via a coupling link 4.

As will be seen in fig. 2, the surface of the suction sole 5 is formed with suction channels which extend transversely to the suction sole in plane, recessed areas 10 to a channel 11 , which extends inwards in the suction sole and communicates with the vacuum cleaner via its vacuum cleaner hose (not shown), which is typically formed by a straight pipe that merges into a bent pipe which is connected with the vacuum cleaner by means of a vacuum cleaner hose.

Finally, fig. 2 shows a wheel 7 which is suspended from a shaft 8, as well as brushes 9 in the vicinity of the channel 11.

During use of this known nozzle it frequently happens that the user either presses the nozzle down into the surface or tilts it and thereby moves the suction sole away from the surface to be cleaned. In the first case the movement of the nozzle will be impeded, and in the second case the suction capacity will be reduced significantly. If, in addition, a very strong suction power is provided, it may happen that, during movement, the nozzle is either almost impossible to move or almost "jumps" across the surface.

Referring now to figures 3 and 4, the structure of the connection according to the invention between a vacuum cleaner nozzle having a suction sole 22 and a vacuum cleaner hose (not shown) will be explained.

As will be seen, the straight pipe (not shown) is connected with a coupling member 15 via a resilient part, in the form of a bellows 16, to the shown nozzle, which is configured here as a shell 14.

As will additionally be seen in figs. 3 and 4, the shell 14 is rotatably connected with the shown suction sole 22, which will be seen in fig. 4 to be engaged with a surface 23 to be cleaned. Further, arrows 25 in figs. 3 and 4 show the transport path for dust and the like which has been sucked up via the suction channel, which is designated 24 in fig. 4, of the suction sole.

The pivot between the suction sole 22 and the shell 14 is shown by the ref- erence numeral 11 in the figures. Also shown is a pin 26 on the suction sole which cooperates with a corresponding hole 27 in the shell 14, and such that the pin and the suction sole are positioned close to a surface 23 to be cleaned.

Various preferred embodiments of the parts incorporated in the connection according to the invention will now be explained:

A box-shaped plastics shell is supported by one or two wheels rearmost at the pipe connection. The shell is open downwards, and the suction sole, likewise box-shaped, is arranged floatingly in this opening. The suction sole may advantageously be formed by a metal part downwards toward the surface (to be cleaned) and a plastics part. The metal part is formed with a transverse suction channel perpendicular to the normal direction of move- ment of the nozzle. The connection between the suction sole and the shell is formed partly by a flexible air-tight bellows of an elastomer and partly by a hinge connection. In the preferred embodiment, the hinge connection is formed as small pins on the plastics part of the suction sole, said pins being mounted in corresponding holes in the shell. To prevent tilting of the suction sole, the pins must be mounted as close to the surface as possible and centrally in the transverse suction channel of the suction sole at the ends thereof.

The mode of operation of the nozzle in use will be explained now.

When a user moves the nozzle across a surface, the user will sometimes lift or lower the vacuum cleaner hose with the straight and bent pipe during the push and pull movement, e.g. with a view to being able to vacuum- clean below an article of furniture, such as a table.

This lifting or lowering movement will be transferred to the bellows, and since the coupling between the nozzle and the straight part of the vacuum cleaner hose is connected with the rotatable link, the suction sole of the nozzle will not be lifted from the surface or be pressed down against it, such that just push or pull forces will be transferred to the nozzle, which means that, even in case of very strong suction conditions, it will be relatively easy to move the nozzle on the surface.

Claims

PATENT CLAIMS
1. A connection between a pipe and a nozzle having a suction sole, said suction sole having a suction channel extending toward a surface to be cleaned, characterized in that the pipe and the suction sole of the nozzle are connected with each other by a resilient part, and that the suction sole of the nozzle is connected with the pipe by a rotatable link such that the suction sole is rotatably connected with the pipe.
2. A connection according to claim ^characterized in that the resilient part is formed by a bellows.
3. A connection according to claims 1-2, characterized in that the rotatable link is formed by a hinge.
4. A connection according to claim 3, ch a ra cte ri zed in that the hinge consists of two parts, where one part is arranged in a shell or a part of a shell, while the other part is arranged in the suction sole.
5. A connection according to claim 4, characterized in that one part is a hole, while the other part is a pin.
6. A connection according to claims 1 -5, ch a racte rized in that, near the resilient part, the pipe has at last one wheel having a transverse shaft which, in addition to the wheel or wheels, also carries one end of the rotatable link.
7. A connection according to claims 1-6, characterized in that the suction sole is formed as a box having two long and two short sides, said long sides being perpendicular to the pipe, and that the rotatable link is connected with the short sides on the suction sole near the surface of the suction sole.
8. A connection according to claims 1-7, characterized in that the suction sole is rotatably connected about an axis which extends symmetri- cally about the long sides of the box relative to the suction channel provided in the suction sole.
9. A connection according to claims 1-8, characterized in that the internal diameter of the suction channel of the suction sole constitutes about 35% of the area of the suction sole.
10. A connection according to claims 1 -9, characterized in that the internal diameter of the suction channel of the suction sole has a four- sided shape.
PCT/DK2003/000363 2002-06-04 2003-06-03 A connection between a pipe and a nozzle WO2003101272A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DKPA200200853 2002-06-04
DKPA200200853 2002-06-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2003233785A AU2003233785A1 (en) 2002-06-04 2003-06-03 A connection between a pipe and a nozzle

Publications (1)

Publication Number Publication Date
WO2003101272A1 true WO2003101272A1 (en) 2003-12-11

Family

ID=29594984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2003/000363 WO2003101272A1 (en) 2002-06-04 2003-06-03 A connection between a pipe and a nozzle

Country Status (2)

Country Link
AU (1) AU2003233785A1 (en)
WO (1) WO2003101272A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE104383C1 (en) * 1940-10-05 1942-04-28 Fisker & Nielsen As Dammsugarmuntstycke
DD277208A1 (en) * 1988-11-23 1990-03-28 Ingbuero Elektro Geraete Veb vacuum cleaner nozzle
US6065183A (en) * 1995-10-12 2000-05-23 Nilfisk A/S Connection element for a mouthpiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE104383C1 (en) * 1940-10-05 1942-04-28 Fisker & Nielsen As Dammsugarmuntstycke
DD277208A1 (en) * 1988-11-23 1990-03-28 Ingbuero Elektro Geraete Veb vacuum cleaner nozzle
US6065183A (en) * 1995-10-12 2000-05-23 Nilfisk A/S Connection element for a mouthpiece

Also Published As

Publication number Publication date
AU2003233785A1 (en) 2003-12-19

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