EP0931501A2 - Accessoire pour machine d'entretien des sols - Google Patents

Accessoire pour machine d'entretien des sols Download PDF

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Publication number
EP0931501A2
EP0931501A2 EP99300510A EP99300510A EP0931501A2 EP 0931501 A2 EP0931501 A2 EP 0931501A2 EP 99300510 A EP99300510 A EP 99300510A EP 99300510 A EP99300510 A EP 99300510A EP 0931501 A2 EP0931501 A2 EP 0931501A2
Authority
EP
European Patent Office
Prior art keywords
floor
attachment
maintenance machine
apertures
passageway
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.)
Withdrawn
Application number
EP99300510A
Other languages
German (de)
English (en)
Other versions
EP0931501A3 (fr
Inventor
Christopher Robert Duncan
Michael Edward Gailes
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.)
Numatic International Ltd
Original Assignee
Numatic International 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 Numatic International Ltd filed Critical Numatic International Ltd
Publication of EP0931501A2 publication Critical patent/EP0931501A2/fr
Publication of EP0931501A3 publication Critical patent/EP0931501A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • the present invention relates to vacuum floor treatment and maintenance machines equipped with rotating sanding or brushing heads.
  • Conventional floor maintenance machines which may be used for polishing or sanding a floor generally include a rotating head which is in contact with the floor and may carry, for example, bristles, an abrasive surface, wire brushes, or polishing pads depending on the surface to be treated and the type of treatment to be applied.
  • the rotating head in conventional floor maintenance machines generally causes dirt and debris to be thrown outwards on rotation of the disc.
  • the dust and debris may be collected by means of a suction hose connected to a vacuum unit.
  • a sanding attachment head is connected to the floor maintenance machine, the sanding attachment head having a drive disc and a sanding disc attached thereto, the sanding disc contacting the floor surface in use.
  • a vacuum attachment is generally applied to the stick of the floor maintenance machine and a suction hose is connected between the vacuum attachment and a cover of the sanding attachment head.
  • a separate floating ring which extends around the periphery of the sanding attachment head acts to hold the dust within the attachment head and, as the sanding attachment rotates, the dust is collected using the suction hose.
  • the sawdust generated during the sanding operation will collect at the periphery of the sanding disc.
  • the floating ring permits low pressure chamber to develop at the periphery of the disc so that the sawdust is lifted up and carried to the vacuum device.
  • the present invention aims to substantially overcome or ameliorate the above-mentioned disadvantage.
  • an attachment for a floor maintenance machine for use in dry operations comprising a first portion for contacting the floor in use, the first portion having one or more apertures extending therethrough, the first portion being attachable to a floor maintenance machine so that reduction of the air pressure above the first portion during operation of the maintenance machine enables air and particles entrained therein to be drawn through the one or more apertures in the first portion.
  • a cover portion is attachable to the floor maintenance machine so that the cover portion extends over the first portion and is spaced axially therefrom to define a passageway, the passageway extending between the cover portion and the first portion so that reduction of the air pressure above the first portion during operation of the maintenance machine in use enables air and particles entrained therein to be drawn through the passageway.
  • the attachment may comprise a brush for polishing a floor.
  • the attachment further comprises a second portion, the second portion having one or more apertures extending therethrough, the second portion being attachable to the first portion so that the one or more apertures in the second portion overlap the one or more apertures in the first portion enabling air and particles entrained therein to be drawn through the one or more apertures in the first and second portions.
  • the attachment may comprise a disc for sanding a floor, a floor pad, a scarifying wire brush, or a carborundum stone or stones.
  • the cover portion extends over the second portion and is spaced axially therefrom so that a passageway is formed between the cover portion and the second portion so that reduction of the air pressure above the second portion during operation of the floor maintenance machine enables air and particles entrained therein to be drawn along the passageway.
  • the cover portion has outlet aperture to allow egress of air and particles entrained therein after passing through the apertures in the second and/or first portions and the passageway.
  • FIG 1 shows a floor maintenance machine 10 comprising a control handle 12, a vacuum unit 14, a motor unit 16 and a suction hose 20.
  • the control handle 12 extends upwardly from the motor unit 16 to a height convenient to the operator for holding and is hingedly attached to the motor unit 16.
  • the vacuum unit 14 is mounted on the control handle 12 above the motor unit 16.
  • a drive assembly 27 having a peripheral housing is attached to the underside of the motor unit 16.
  • the vacuum hose 20 extends from the vacuum unit 14 to the drive assembly 27.
  • the drive assembly 27 comprises an annular flange portion 24 from which a peripheral skirt portion 26 depends.
  • a floating vacuum ring 22 comprising an annular band sits over the depending skirt portion 26 and extends around the skirt portion such that in use the lower rims 21 and 23 of the depending skirt portion 26 and floating vacuum ring 22 respectively rest on the floor to prevent dust from being thrown outwards on rotation of the attachment head.
  • the floating vacuum ring 22 is concentrically mounted with the drive assembly 27, as shown in Figure 3.
  • Figure 2a shows a polishing brush attachment 18a comprising a plate 30 having a substantially circular periphery.
  • the plate 30 has an upper surface 32 and a lower surface 34.
  • a plurality of bristles extend from the lower surface 34 of the plate 30 and the free ends of the bristles 36 contact the floor in use.
  • the ridge 38 has a substantially circular periphery with a diameter less than the diameter of the plate 30.
  • a central bore 40 extends through the plate 30 and is concentric therewith.
  • the peripheral wall 42 of the plate 30 defining the central bore 40 is shaped to engage with a corresponding member in the drive assembly 27 to retain the plate 30 on the drive assembly 27.
  • a plurality of apertures 31 extend from the upper surface 32 of the plate 30 to the lower surface 34.
  • the apertures 31 are located around the circumference of a hypothetical circle concentric with the central bore 40 and plate 30, the diameter of the hypothetical circle being less than the diameter of the ridge 38.
  • FIG. 2b and 3 An alternative attachment 18b is shown in Figures 2b and 3 in the form of a sanding disc 50.
  • the attachment 18b shown in Figures 2b and 3 comprises a plate 45 identical to the plate 30 of the attachment 18a shown in Figure 2a with the exception that the lower surface 46 of the plate 45 in the second embodiment does not include a plurality of bristles extending therefrom.
  • an annular drive disc 52 is attachable to the lower surface 46 of the plate 45.
  • the drive disc 52 has a plurality of apertures 54 which extend from the upper surface 55 of the drive disc 52 to the lower surface of the drive disc.
  • the apertures 54 are spaced from each other around the circumference of a hypothetical circle concentric with the drive disc 52.
  • a central throughbore 56 extends through the drive disc 52 and is located concentrically therewith.
  • a sanding disc 50 which is attachable to the drive disc 52 has a plurality of apertures 58 which match the apertures 54 in the drive disc 52, and a central throughbore 59 which matches the central throughbore 56 in the drive disc 52.
  • the diameter of the sanding disc 50 is substantially equal to the diameter of the drive disc 52.
  • the drive disc 52 is sandwiched between the lower surface 46 of the plate 45 and the upper surface 60 of the sanding disc 50 such that the apertures 54, 58 and 31 in the drive disc 52, the sanding disc 50 and the plate 45 are aligned.
  • a drive shaft 70 which is attached to the output shaft of the motor (not shown) in the motor unit 16, extends from the drive assembly 27 and through the central bore 42 in the plate 45 and the drive shaft 70 is secured to the plate 45.
  • Figure 2c shows a further alternative attachment 18c which is identical to the attachment 18b shown in Figure 2b except the sanding disc 50 is replaced by a floor pad 80.
  • the floor pad 80 has a plurality of apertures 82 extending therethrough.
  • the apertures 82 correspond to the apertures in the drive disc 52 such that when the floor pad is attached to the drive disc and plate 45 the apertures through the three elements are aligned.
  • the peripheral shape of the floor pad 80 matches the peripheral shape of the drive disc 52.
  • the cover portion 27 has an outlet aperture 85 extending through the flange portion 24 and the free end 90 of the suction hose 20 may be attached to the cover portion 24 over the aperture 85.
  • the cover portion 27 is spaced axially from the attachment 18b to define a passageway 91 which extends around the periphery of the attachment 18b and above the upper surface 44 of the plate 45.
  • the attachment 18a to 18c rotates within the floating vacuum ring 22 once driven by the motor unit 16.
  • the undersurface of the attachment acts on the floor to polish or abrade the floor as appropriate. Debris generated thereby is extracted from around the periphery of the attachment 18a-18c and are drawn through the aligned apertures 31, 54, 58, 82 by the vacuum unit 14 when a reduction in air pressure above the attachment is generated. Air and debris entrained therein are also drawn through the passageway 91 on reduction of the air pressure above the attachment 18a-18c.
  • the arrows 100 shown in the figures illustrate the air flow paths through the attachments 18a-18c. The air and debris entrained therein are drawn through the vacuum hose 20 into the vacuum unit 14 for collection therein.
  • the vacuum attachment comprising the vacuum unit 14 and suction hose 20 evacuates the passageway 91 around the periphery of the attachment, dust and debris are drawn through the apertures 31, 54, 58, 82 in the attachment 18a-18c, thus, dirt and debris may be removed from the floor during operation of the floor maintenance machine.
  • the apertures in the plates 30 and 45, and the corresponding apertures 54, 58 and 82 have a diameter of around 1 inch.
  • attachments may be varied, for example, whilst floor maintenance heads comprising sanding discs, brushes, and floor pads have been described, these are given by way of example only and it will be appreciated that other attachments could be used such as scarifying wire brushes or carborundum stones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP99300510A 1998-01-23 1999-01-25 Accessoire pour machine d'entretien des sols Withdrawn EP0931501A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9801527.4A GB9801527D0 (en) 1998-01-23 1998-01-23 Attachment for a floor maintenance machine
GB9801527 1998-01-23

Publications (2)

Publication Number Publication Date
EP0931501A2 true EP0931501A2 (fr) 1999-07-28
EP0931501A3 EP0931501A3 (fr) 2001-03-14

Family

ID=10825827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99300510A Withdrawn EP0931501A3 (fr) 1998-01-23 1999-01-25 Accessoire pour machine d'entretien des sols

Country Status (2)

Country Link
EP (1) EP0931501A3 (fr)
GB (1) GB9801527D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100659508B1 (ko) 2006-03-13 2006-12-20 (주)한보월드 연마기
EP1925401A1 (fr) * 2006-11-22 2008-05-28 Festool GmbH Meuleuse portative à moteur avec mécanisme d'aspiration réglable
GB2554388A (en) * 2016-09-23 2018-04-04 T L Killis & Sons Ltd Surface treatment tool
CN110238721A (zh) * 2019-06-14 2019-09-17 盐城恒久市政工程有限公司 一种建筑节能环保式外壁清理维修辅助装置
CN113578827A (zh) * 2021-08-25 2021-11-02 李澳旗 一种用于多风沙地区使用的光伏板表面清扫装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089134B (de) * 1955-12-20 1960-09-15 Mauz & Pfeiffer Bodenpflegemaschine mit Staubabsaugung
US4932163A (en) * 1989-08-29 1990-06-12 Chilton Douglas L Dust control system for an abrasive grinder
US5027470A (en) * 1990-10-09 1991-07-02 Robert Takashima Dustless surface treatment machine
US5088151A (en) * 1991-04-25 1992-02-18 Advance Machine Company Collection system for a floor polishing machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100659508B1 (ko) 2006-03-13 2006-12-20 (주)한보월드 연마기
EP1925401A1 (fr) * 2006-11-22 2008-05-28 Festool GmbH Meuleuse portative à moteur avec mécanisme d'aspiration réglable
GB2554388A (en) * 2016-09-23 2018-04-04 T L Killis & Sons Ltd Surface treatment tool
GB2554388B (en) * 2016-09-23 2019-05-08 T L Killis & Sons Ltd Surface treatment tool
US11291344B2 (en) 2016-09-23 2022-04-05 Motorscrubber Limited Surface treatment tool
CN110238721A (zh) * 2019-06-14 2019-09-17 盐城恒久市政工程有限公司 一种建筑节能环保式外壁清理维修辅助装置
CN113578827A (zh) * 2021-08-25 2021-11-02 李澳旗 一种用于多风沙地区使用的光伏板表面清扫装置

Also Published As

Publication number Publication date
EP0931501A3 (fr) 2001-03-14
GB9801527D0 (en) 1998-03-25

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