AU2015329765B2 - Floor tool - Google Patents

Floor tool Download PDF

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Publication number
AU2015329765B2
AU2015329765B2 AU2015329765A AU2015329765A AU2015329765B2 AU 2015329765 B2 AU2015329765 B2 AU 2015329765B2 AU 2015329765 A AU2015329765 A AU 2015329765A AU 2015329765 A AU2015329765 A AU 2015329765A AU 2015329765 B2 AU2015329765 B2 AU 2015329765B2
Authority
AU
Australia
Prior art keywords
floor
floor tool
passage
tool according
sealing member
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
AU2015329765A
Other versions
AU2015329765A1 (en
Inventor
Daniel William Carter
Matthew William Thomas GRANGER
Jennifer Kathryn MARSDEN
Chloe Alice SCOTT
Ben Smith
May Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Techtronic Industries Co Ltd
Original Assignee
Techtronic Industries Co Ltd
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
Application filed by Techtronic Industries Co Ltd filed Critical Techtronic Industries Co Ltd
Priority claimed from PCT/GB2015/052805 external-priority patent/WO2016055767A1/en
Publication of AU2015329765A1 publication Critical patent/AU2015329765A1/en
Application granted granted Critical
Publication of AU2015329765B2 publication Critical patent/AU2015329765B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • A47L9/0444—Gearing or transmission means therefor for conveying motion by endless flexible members, e.g. belts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0455—Bearing means therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466—Rotating tools
    • A47L9/0477—Rolls
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning In General (AREA)

Abstract

A floor tool for an apparatus for cleaning a floor surface, said apparatus includes a source of suction, the floor tool includes: a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source; a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; and a sealing member for engaging with a floor surface during use, which sealing member extends away from the floor facing surface and laterally across the floor facing surface to block a flow of air towards the passage when the floor tool is engaged with a floor surface, wherein, during use, the or a substantial portion of the weight of the floor tool is borne / carried by the sealing member.

Description

FLOOR TOOL
Description of Invention
This invention relates to a floor tool for an apparatus for cleaning a floor surface and/or such an apparatus including the floor tool. In particular, this invention relates to an apparatus which utilises a source of suction to draw dirt and/or debris from a floor surface being cleaned for storage in a dirt chamber or bag for emptying by a user. Such apparatus are typically known as “vacuum cleaners”.
The performance of vacuum cleaners is judged on a number of parameters which includes how efficient a cleaner is in extracting dirt/debris for a given suction power.
Known vacuum cleaners have a floor tool with a floor facing surface which includes an inlet through which dirt/debris entrained air enters the tool and flows towards the dirt chamber. The configuration of a floor tool can impact on suction air flow path and the amount of dirt/debris which will be entrained in the air during operation of a vacuum cleaner. It is desirable to provide a floor tool with an optimised configuration which will improve the efficiency I performance of a vacuum cleaner.
According to a first aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor 25 tool including:
a floor tool body, formed as a one piece component, and including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, wherein the passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; lateral end parts of the passage tapering to narrow the passage towards the respective lateral inlets; and
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-2 sealing members for engaging with a floor surface during use, each of the sealing members being received in a respective recess in the floor facing surface, the sealing members extending away from the floor facing surface and laterally across the floor facing surface on opposing sides ofthe passage to block a flow of air towards the passage when the floor tool is engaged with a floor surface;
wherein, during use, the weight of the floor tool is borne by the sealing member.
According to a second aspect of the invention we provided a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; and a sealing member for engaging with a floor surface during use, which sealing member extends away from the floor facing surface and laterally across the floor facing surface to block a flow of air towards the passage when the floor tool is engaged with a floor surface, wherein the sealing member provides a primary engagement or primary support of the floor tool on the floor surface.
According to a third aspect of the present invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; and
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-32015329765 17 Jan 2019 a sealing member for engaging with a floor surface during use, which sealing member extends away from the floor facing surface and laterally across the floor facing surface to block a flow of air towards the passage when the floor tool is engaged with a floor surface, wherein the sealing member spaces the floor facing inlet from the floor surface.
According to a fourth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; and a sealing member for engaging with a floor surface during use, which sealing member extends away from the floor facing surface and laterally across the floor facing surface to block a flow of air towards the passage when the floor tool is engaged with a floor surface, wherein the lateral inlets and I or portions of the passage adjacent thereto are free of substantial restrictions to the flow of air therethrough and/or therepast.
According to a fifth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor 25 tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source having a cross-sectional area A;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air, wherein one or both of the lateral inlets has a cross-sectional area B; and
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-42015329765 17 Jan 2019 wherein the ratio of area A to area B (A:B) is in the range of 12:1 and
8:1.
According to a sixth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; and an outlet aperture for communication with the suction source via a 10 conduit having a longitudinal axis, wherein the longitudinal axis of the conduit is inclined at an angle of between 45 and 55 degrees with respect to a plane containing the floor facing inlet.
According to a seventh aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source; and a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface, wherein the passage includes a wall which includes the outlet aperture;
wherein a surface area of the wall and / or a cross-sectional area of the floor facing inlet is between 3800mm2 and 4800mm2.
According to an eighth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air;
an outlet aperture for communication with the suction source; and
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-52015329765 17 Jan 2019 a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface, wherein the passage includes a wall which includes the outlet aperture, wherein a volume of the passage is between 46000mm3 and 50000mm3.
According to a ninth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; 10 an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface; and a conduit in communication with the outlet aperture, wherein the conduit includes a portion adjacent the outlet aperture and extending upwardly 15 therefrom, and wherein the upwardly extending portion has a substantially constant crosssectional area.
According to a tenth aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface; and a conduit in communication with the outlet aperture, wherein the conduit includes a portion adjacent the outlet aperture and extending upwardly therefrom, and wherein the upwardly extending portion has a substantially constant cross30 sectional area.
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-62015329765 17 Jan 2019
According to an eleventh aspect of the invention we provide a floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
a floor facing surface having a floor facing inlet for receiving dirty air;
an outlet aperture for communication with the suction source via a conduit having a longitudinal axis, wherein the conduit provides a releasable connection to the apparatus;
a passage in fluid communication with the outlet aperture, which passage extends laterally across the floor facing surface and terminates at respective lateral inlets for receiving dirty air; and wherein the floor tool is formed as a one piece component or unitary component.
Further features of the first to eleventh aspects of the invention are set out in the 15 dependent claims thereto which are appended hereto.
Embodiments of the invention will now be described, by way of example only, with reference to the following figures, of which:
Figure 1 is a front view of a floor tool for connection with an apparatus for cleaning a floor surface in accordance with the present invention;
Figure 2 is a plan view of the floor tool of figure 1;
Figure 3 is a bottom perspective view of the floor tool of figure 1;
Figure 4 is a bottom view of the floor tool of figure 1;
Figure 5 is a side view of the floor tool of figure 1 when not in use;
Figures 6a and 6b are side views of the floor tool of figure 1 in first and second states during use;
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Figure 7 is a cross-sectional side view of the floor tool of figure 1; and
Figure 8 is a cross-section front view of the floor tool of figure 1;
With reference to the figures, these show an embodiment of a floor tool 10 embodying various aspects of the invention. The floor tool 10 is for an apparatus (not shown) for cleaning a floor surface. The apparatus includes a source of suction and a wand I hose for connection with the floor tool 10 to provide suction 10 thereto. The user would move the floor tool 10 over a floor surface S to be cleaned by pushing and pulling the wand back and forth.
In some embodiments the floor tool may include a housing 13. The floor tool 10 includes a floor facing surface 14 having a floor facing inlet 16 for receiving dirty 15 air and an outlet aperture 18. The floor tool 10 has a conduit 12 having a longitudinal axis C which communicates with the outlet aperture 18 and provides communication therefrom to the suction source. The floor tool 10 has a further conduit 38 in communication with the conduit 12. The outlet aperture 18 is connectable to a wand or hose of an apparatus to provide a flow path from the 20 suction source to the inlet 16.
The floor facing surface 14 includes a passage 20 in fluid communication with the outlet aperture 18. The passage 20 extends laterally across the floor facing surface 14 and terminates at respective lateral inlets 23a, 23b for receiving dirty 25 air. The floor facing surface 14 includes a planar portion 21a and a planar portion
21b which are positioned forwardly and rearwardly of the passage 20 respectively.
Floor tool 10 includes a pair of sealing members 22, 24 for engaging with a floor surface S during use. The sealing members 22, 24 may be made from a rubber 30 material or other synthetic material.
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-82015329765 17 Jan 2019
Sealing member 22 is positioned forwardly of the passage 20, closer to a forwardly leading edge 17 of the housing 13 than sealing member 24 which is positioned rearwardly of the passage 20. The sealing members 22, 24 are spaced apart from one another in a direction transverse to the normal direction of movement of the floor tool 10.
In this embodiment, the sealing members 22, 24 are identical and certain features of the sealing members 22, 24 will be described with reference to the sealing member 22 only. In envisaged embodiments, the sealing members 22, 24 may not be identical and only one of the sealing members may have one or more of the features described hereinafter.
Sealing member 22, 24 extends away from the floor facing surface 14 and blocks a flow of air towards the passage 20 when it is engaged with a floor surface S.
Sealing member 22, 24 is substantially elongate and extends laterally across the floor tool 10. Sealing member 22, 24 extends across the floor tool 10 the same distance as the passage 20. The thickness 26a, 26b of the sealing member 22, 24 decreases as it extends away from the floor facing surface 14.
Sealing member 22, 24 includes a base portion 25a, 27a for engagement with the housing 13 and a distal portion 25b, 27b for engagement with the floor surface S. In embodiments, the base portion 25a, 27a is received in a recess defined in the floor facing surface 14 of the housing 13. The base portion 25a, 27a may be fixed to the remainder of the floor tool 10 through the use of adhesive or welding or other methods known in the art. In embodiments, the base portion 25a, 27a may be attached by other methods that do not require a recess in the housing 13. In embodiments, the base portion 25a, 27a is connected with the housing 13 such that it cannot be moved with respect to the floor facing surface 14.
Operation of the floor tool 10 will be described with reference to figures 6a and 6b which show the floor tool 10 in first and second states of use respectively.
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During use, the user will normally repeatedly move the floor tool 10 along a hard floor surface S, forwardly in the direction of the forwardly leading edge of the housing (shown in Fig. 6a) and rearwardly in the opposite direction (shown in Fig. 6b). It will be seen that the sealing members 22, 24 move and deform when they are engaged with the floor surface S and the floor tool 10 is moved along the floor surface S.
In the first state, sealing member 22 extends into the planar region 21a forward of the passage 20 and sealing member 24 extends away from the planar region 21b rearward of the passage 20. A substantial portion of each sealing member 22, 24 (at least the distal end thereof) lies in a plane substantially parallel with the floor surface S when the sealing member 22, 24 is engaged with the floor surface S. Each sealing member 22 thus blocks the flow of air towards the passage through its engagement with the floor surface S.
In the second state, the sealing members 22, 24 extend in the opposite direction to the first state, i.e. the sealing member 22 extends away from the planar region 21a forward of the passage 20 and sealing member 24 extends into the planar region 21b rearward of the passage 20.
It will be seen that in both states, the sealing members 22, 24 prevent the flow of air towards the passage. Air is therefore predominantly drawn into the passage 20 through the lateral inlets 23a, 23b. This is in comparison to known floor tools where a substantial amount of the air drawn into the passage 20 will be drawn from air forward or rearward of the floor tool 10. It has been found that the invention provides a significant increase in uptake of dirt I debris from a floor surface being cleaned in comparison to known floor tools.
It will be seen that during use the or a substantial portion of the weight of the floor 30 tool 10 is borne I carried by the sealing members 22, 24. The sealing members provide the only or sole engagement or support of the floor tool 10 on the floor
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-10 2015329765 17 Jan 2019 surface S. In embodiments, the sealing members 22, 24 provide the primary engagement or primary support of the floor tool 22, 24 on the floor surface S.
It will also be seen that the sealing members 22, 24 space the floor facing inlet 16 5 from the floor surface S during use.
The sealing members 22, 24 provide a substantially fluid-tight seal when they engage with the floor surface S by movement I deformation thereof. The lateral inlets 23a, 23b and I or portions of the passage 20 adjacent thereto are free of 10 substantial restrictions to the flow of air therethrough and/or therepast.
It has been found that the cleaning performance of the floor tool 10 is unexpectedly improved by adjusting various dimensions I geometric features thereof.
It has been found advantageous for the sealing member 22, 24 to taper in crosssection as it extends from the base portion 25a, 27a towards the distal portion 25b, 27b, and more preferably for the sealing member 22, 24 to have a generally wedge-shaped cross-section. Further benefits are obtained by having the thickness of the sealing member 22, 24 at the distal portion 25b, 27b being between 0.1 and 0.5mm, and preferably being 0.3mm or about 0.3mm.
In embodiments, it has been found to improve performance by having the sealing member 22 positioned forwardly of the floor facing inlet 16 positioned further away 25 from a central part of a forward peripheral portion 28 of the floor facing inlet 16 than the distal portion 27b of sealing member 24 positioned rearwardly of the floor facing inlet 16 is spaced from a central part of a rearward peripheral portion 30.
It has been found to be further advantageous for the sealing member 22 positioned forwardly of the floor facing inlet 16 to be spaced at a distance d of
9.1mm or about 9.1mm from the central part of the forward peripheral portion 28 of the floor facing inlet 16. Similarly, it has been found that having the sealing
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-11 2015329765 17 Jan 2019 member 24 positioned rearwardly of the floor facing inlet 16 spaced at a distance d’ of 8.7mm or about 8.7mm from the central part of the rearward peripheral portion 30 of the floor facing inlet 16 is beneficial.
In embodiments, it has been found that spacing one or both of the sealing members 22, 24 at a distance which is at least 6.0mm, or more preferably at least 7.0,mm and even more preferably at least 8.0mm, from one of the forward or rearward peripheral portions 28, 30 improves performance.
In embodiments, it has been found to beneficial for the distal portion 25b, 27b of the sealing member 22, 24 to be spaced at a distance d’” of between 3.0mm and 6.0mm in a vertical direction from a peripheral portion 32, 34 of the floor facing inlet 16 which is defined by the lateral inlet 23a, 23b. Further advantages have been found if the distal portion 25a, 27b extends a distance d’” of between 4.5 to
5.5mm and more preferably extends a distance d’” of 5.0mm or about 5.0mm.
A further aspect of the floor tool 10 will now be described. The conduit 38 is in communication with the outlet aperture 18. The conduit 38 includes a portion 40 adjacent the outlet aperture 18 which extends upwardly therefrom. The portion 40 has a substantially constant cross-sectional area. In embodiments, the crosssectional area of the outlet aperture 18 is the same or about the same as the cross-sectional area of the upwardly extending portion 40. In embodiments those cross-sectional areas may not be the same.
The upwardly extending portion 40 extends substantially perpendicularly away from the plane O containing the outlet aperture 18. It has been found that improvements in performance are gained if the upwardly extending portion 40 extends a distance d’” of between 10mm and 40mm, preferably between 20mm and 35mm and more preferably a distance d’” of between 25mm and 30mm. It is most preferably for the upwardly extending portion 40 to extend a distance d’” of 27mm or about 27mm.
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In more detail, conduit 38 includes first and second opposing lateral internal side walls 42, 44, and forwardly and rearwardly opposing upwardly extending internal walls 46, 48. The upper portion 50 of the forward internal wall 46 extends towards the rearward internal wall 48. The forward and rearward internal walls 46, 48 are connected to one another at respective upper ends thereof.
The rearward internal wall 48 includes an opening 52 and the conduit 12 has a first end 56 in communication with the opening 52 and a second end 58 for communication with the suction source. The second end 58 provides a releasable connection with a wand or hose of the apparatus insertable therein. Longitudinal axis C of the conduit 12 is inclined with respect to a longitudinal axis C’ of the conduit 38. Conduit 12 is tubular and has a substantially circular cross-section in the direction it extends away from the opening 52.
Upwardly extending portions 60, 62 of the lateral internal side walls 40, 42 adjacent the outlet aperture 18 are substantially parallel to one another and extend a distance of between 10mm and 40mm perpendicularly away from the plane O containing the outlet aperture. Preferably, the respective upwardly extending portions 60, 62 extend a distance of between 20mm and 35mm, more preferably between 25mm and 30mm perpendicularly away from the plane containing the outlet aperture. Most preferably, the respective upwardly extending portions 60, 62 extend a distance of 27mm or about 27mm perpendicularly away from the plane containing the outlet aperture.
In embodiments, an upper portion of the rearward internal wall 48 or the forward internal wall 46 may extend towards the other of the forward or reward internal wall 46, 48 as the said wall extends upwardly. In embodiments, respective upper portions of the forward and rearward internal walls 46, 48 may extend towards each other as the walls 46, 48 extend upwardly.
In embodiments, it has been found that varying the dimensions of the outlet aperture 18 and the lateral inlets 23a, 23b can improve performance of the floor
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-132015329765 17 Jan 2019 tool 10. The outlet aperture 18 has a cross-sectional area A and in this embodiment the aperture is substantially rectangular. In embodiments, the outlet aperture 18 may be a different shape, for example, a circle or an oval. The lateral inlets 23a, 23b are identical and each has a cross-sectional area B. The inlets
23a, 23b are substantially rectangular but in other embodiments one or both of the inlets may not be identical and / or be a different shape, e.g. semi-circular.
It has been found that selecting the ratio (A:B) of the cross-sectional areas of the outlet aperture 18 and the lateral inlets 23a, 23b to lie in the range of 12:1 and 8:1 10 is advantageous, and it is more advantageous for the ratio to lie in the range of
11:1 to 9:1. Most preferably the ratio (A:B) is 10:1 or about 10:1.
Further advantages have been identified in connection with the configuration of the conduit 12 which provides a releasable connection to a wand or hose of the 15 apparatus. In more detail, having the longitudinal axis C of the conduit 12 inclined at an angle Θ of between 45 and 55 degrees, preferably between 45 and 50 degrees, and more preferably 48 degrees or about 48 degrees, with respect to a plane I containing the floor facing inlet 16, provides improved performance during use. In this embodiment, the longitudinal axis C of the conduit 12 is fixed with 20 respect to the floor facing inlet 16. In embodiments, the floor tool 10 maybe arranged such that the conduit 12 can be moved with respect to the floor facing inlet 16 and the tool 10 includes a device for fixing the position of the conduit 12 with respect to the floor facing inlet 16.
Benefits in performance have also been found in connection with another aspect of the floor tool 10, as will now be described. The passage 20 includes a wall 36 which includes the outlet aperture 18. In this embodiment, the passage includes forwardly and rearwardly positioned walls 38a, 38b which extend upwardly from the wall 36. The forward wall 38a has a central part 38a’ which is generally horizontal and has a respective lateral end part 38a”. 38”’ extending from either end of the central part 38a’. The lateral end parts 38a”, 38’” taper towards the respective lateral inlets 23a, 23b as they extend thereto. The rearward wall 38b is
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-142015329765 17 Jan 2019 generally horizontal along its entire length. The wall 36 has a surface area W and the cross-sectional area of the passage is constant as it extends towards the floor facing inlet 16. The floor facing inlet 16 has an area F.
In embodiments the shape of the wall 36 may be different, e.g. a rectangle, and/or the cross-sectional area of the passage may vary, e.g. increase, as it extends towards the floor facing inlet 16. In this embodiment, the depth of the passage gradually decreases as the passage laterally extends from respective peripheral portions of the outlet aperture 18 towards the lateral inlets 23a, 23b. In embodiments, the depth of the passage may remain constant or vary in a different way to that of the described embodiments.
It has been found to be particularly beneficial for the surface area W of the wall 36 and / or a cross-sectional area F of the floor facing inlet 16 to be between
3800mm2 and 4800mm2, preferably between 4000mm2 and 4500mm2, and most preferably between 4300mm2 and 4500mm2. Further advantages are obtained if the areas W, F are 4430mm2 or about 4430mm2.
The volume of the passage 20 can be optimised so as to further improve performance. In particular, a volume of the passage 20 between 46000mm3 and 50000mm3 is beneficial. Furthermore, a volume of between 47000mm3 and 49000mm3, preferably 47500mm3 and 48500mm3. More preferably a volume of 48000mm3 or around 48000mm3, most preferably 48078 mm3 or around 48078 mm3 improves performance.
Suction losses during use of the floor tool 10 have been reduced by making the floor tool 10 as a one piece component or of unitary construction. This may be done by a moulding process or by other process know in the art, such as 3D printing. In embodiments, the sealing members are connected to the remainder of 30 the floor tool after that remainder has been formed. The floor tool 10 is made of a relatively rigid material such as Acrylonitrile Butadiene Styrene (ABS). In
11011126_1 (GHMatters) P105892.AU
-152015329765 17 Jan 2019 embodiments, other materials such as polypropylene, polycarbonate and I or diecast aluminium may be used.
It will be appreciated that the features described in relation to the embodiment are necessarily all required in combination in order to provide benefits I advantages to the performance of the floor tool. The skilled person would appreciate that one or more combinations of the described features can be utilised without requiring the other features.
When used in this specification and claims, the terms comprises and comprising and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

Claims (16)

1. A floor tool for an apparatus for cleaning a floor surface, said apparatus including a source of suction, the floor tool including:
5 a floor tool body, formed as one piece component, and including:
a floor facing surface having a floor facing inlet for receiving dirty air; an outlet aperture for communication with the suction source;
a passage in fluid communication with the outlet aperture, wherein the passage extends laterally across the floor facing surface and terminates at 10 respective lateral inlets for receiving dirty air, lateral end parts of the passage tapering to narrow the passage towards the respective lateral inlets; and sealing members for engaging with a floor surface during use, each of the sealing members being received in a respective recess in the floor facing surface, the sealing members extending away from the floor facing surface 15 and laterally across the floor facing surface on opposing sides of the passage to block a flow of air towards the passage when the floor tool is engaged with a floor surface, wherein, during use, the weight of the floor tool is borne by the sealing members.
2. The floor tool according to claim 1, wherein one of the sealing members is positioned forwardly of the floor facing inlet as a forward sealing member and another one of the sealing members is positioned rearwardly of the floor facing inlet as a backward sealing member and the forward sealing member is positioned
25 further away from a forward peripheral portion of the floor facing inlet than the rearward sealing member is positioned relative to a rearward peripheral portion of the floor facing inlet.
3. The floor tool according to claim 2, wherein the forward sealing member is 30 spaced at a distance of 9.1mm or about 9.1mm from the forward peripheral portion of the floor facing inlet.
11011126_1 (GHMatters) P105892.AU
2015329765 17 Jan 2019
4. The floor tool according to claim 3, wherein the rearward sealing member is spaced at a distance of 8.7mm or about 8.7mm from the rearward peripheral portion of the floor facing inlet.
5 5. The floor tool according to any preceding claim, wherein a substantial portion of each of the sealing members lies in a plane substantially parallel with a floor surface when the sealing members are engaged with the floor surface.
6. The floor tool according to any preceding claim, wherein a distal portion of 10 the sealing members is spaced at a distance of between 3.0mm and 6.0mm in a vertical direction from a peripheral portion of the floor facing inlet.
7. The floor tool according to any preceding claim, wherein each of the sealing members include:
15 a base portion connected to a housing of the floor tool body; and a distal portion for engagement with a floor surface, wherein the sealing member tapers in cross-section as it extends from the base portion towards the distal portion.
20
8. The floor tool according to any preceding claim, wherein the sealing members are generally wedge-shaped in cross-section, and the thickness of the sealing member at the distal portion is between 0.1 and 0.5mm.
9. The floor tool according to any preceding claim, wherein the sealing
25 members are generally wedge-shaped in cross-section, and the thickness of the sealing member at the distal portion is 0.3mm or about 0.3mm.
10. The floor tool according to any preceding claim, wherein the sealing members move or deform when engaged with a floor surface.
11. The floor tool according to any preceding claim, wherein the sealing
11011126_1 (GHMatters) P105892.AU
2015329765 17 Jan 2019 members extend across the floor tool the same distance or about the same distance as the passage.
12. The floor tool according to any preceding claim wherein the outlet aperture
5 has a cross-sectional area A; one or both of the lateral inlets has a cross-sectional area B; and the ratio of A:B is in the range of 12:1 and 8:1.
13. The floor tool according to claim 12, wherein the ratio of A:B is in the range of 11:1 to 9:1.
14. The floor tool according to claim 12, wherein the ratio of A:B is 10:1 or is about 10:1.
15. The floor tool according to any one of the preceding claims, wherein the
15 floor tool is a dry floor tool.
16. An apparatus for cleaning a floor surface including the floor tool according to any one of the preceding claims.
AU2015329765A 2014-07-07 2015-09-28 Floor tool Active AU2015329765B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1412051.3A GB2528051B (en) 2014-07-07 2014-07-07 Floor tool
GB1417996.4 2014-10-10
GB1417996.4A GB2528143A (en) 2014-07-07 2014-10-10 Floor tool
PCT/GB2015/052805 WO2016055767A1 (en) 2014-07-07 2015-09-28 Floor tool

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AU2015329765B2 true AU2015329765B2 (en) 2019-02-14

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AU2015329765A Active AU2015329765B2 (en) 2014-07-07 2015-09-28 Floor tool

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CN (2) CN106488730B (en)
AU (2) AU2015287429A1 (en)
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WO (1) WO2016005725A1 (en)

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Publication number Publication date
CN106998979A (en) 2017-08-01
US20170296009A1 (en) 2017-10-19
EP3166464A1 (en) 2017-05-17
CN106488730A (en) 2017-03-08
CN106488730B (en) 2019-12-13
AU2015287429A1 (en) 2017-02-02
US20170135540A1 (en) 2017-05-18
EP3166464B1 (en) 2023-09-13
GB2542522B (en) 2017-09-13
GB201621980D0 (en) 2017-02-08
GB2542522A (en) 2017-03-22
GB2528051A (en) 2016-01-13
WO2016005725A1 (en) 2016-01-14
GB201417996D0 (en) 2014-11-26
GB2528051B (en) 2017-05-24
GB2528143A (en) 2016-01-13
GB201412051D0 (en) 2014-08-20
AU2015329765A1 (en) 2017-06-01

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