EP1506840B1 - Outil électrique et un système d'extraction de débris pour celle-lui - Google Patents

Outil électrique et un système d'extraction de débris pour celle-lui Download PDF

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Publication number
EP1506840B1
EP1506840B1 EP04254798A EP04254798A EP1506840B1 EP 1506840 B1 EP1506840 B1 EP 1506840B1 EP 04254798 A EP04254798 A EP 04254798A EP 04254798 A EP04254798 A EP 04254798A EP 1506840 B1 EP1506840 B1 EP 1506840B1
Authority
EP
European Patent Office
Prior art keywords
debris
housing
power tool
working portion
collection bag
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.)
Not-in-force
Application number
EP04254798A
Other languages
German (de)
English (en)
Other versions
EP1506840A1 (fr
Inventor
Keith Park
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.)
GMCA Pty Ltd
Original Assignee
GMCA Pty 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 GMCA Pty Ltd filed Critical GMCA Pty Ltd
Publication of EP1506840A1 publication Critical patent/EP1506840A1/fr
Application granted granted Critical
Publication of EP1506840B1 publication Critical patent/EP1506840B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • 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

Definitions

  • the present invention relates to a power tool and to a debris extraction system therefor.
  • Sanding devices are known and are used for rapidly sanding a required surface to make said surface smooth, remove one or more layers of a particular substance therefrom, such as paint or vanish and/or for preparing the surface for application of one or more substance layers thereon, such as paint or vanish.
  • These sanding devices typically include a body portion housing drive means for driving the movement of a sanding plate in one or more required directions.
  • Sanding material having a suitably abrasive surface, such as sand paper is attached to an outer surface of the sanding plate with the abrasive surface outermost. The abrasive surface of the sanding material is then positioned in contact with a wall surface requiring sanding and rapid movement of the sanding material against the wall surface driven by said drive means results in the sanding process.
  • powered sanding devices such as a device of the type described above, generate substantial amounts of debris in use.
  • This debris can be harmful to the user if inhaled, can get into the user's eyes, typically making the user's eyes sore, restricts the user's view of the surface being sanded and covers the locality in which the sanding is taking place with a layer of debris, which is undesirable.
  • sanding devices can be provided with debris extraction systems.
  • the majority of these debris extraction systems utilize a suction pump which generates an air flow for sucking air surrounding the sanding plate to a position remote from the sanding plate. The debris is then filtered from the airflow via the use of a selectively permeable bag or via filter means.
  • a problem with these conventional debris extraction systems is that the bag or filter means can quickly become clogged. As the air pressure builds up against the clogged bag or filter means, this either forces the bag off the sanding device, thereby resulting in spillage of already collected debris into the surrounding area or greatly reduces the efficiency with which debris can be extracted from the sanding surface. Furthermore, removal of the bag from the sanding device often results in spillage of debris, thereby typically requiring the sanding device to be moved to an outdoors location or over a bin for emptying. This is inconvenient and time consuming for the user and may not always be possible.
  • DE3528611 illustrates a dust extraction system wherein the canister for collection of dust is connected to the tool by a hose and either moves separately to the tool or is required to be dragged by the tool.
  • DE19800045 appears to show a tool to which dust collection means can be connected to the rear, said dust collection means being in the form of a housing or a bag or both in combination in one embodiment.
  • a power tool said power tool including a body portion, a working portion which generates debris in use, drive means for selective activation to provide driving movement of the working portion in use and debris extraction means for extracting debris from the area at and adjacent to said working portion to a position remote from said working portion
  • said debris extraction means includes at least one housing in which a debris collection bag is removably located and the housing is detachably mounted to the power tool and, when detached, allows retention and transport of the debris bag, the housing having one or more apertures located therein and at least a portion of the walls of the debris collection bag has air permeable pores to allow the passage of air through the housing and debris collection bag and characterized in that the housing is detachably attached to the body portion to locate and mount the debris extraction means on the power tool during use of the same.
  • the debris extraction means typically includes the use of one or more air flows for transporting debris generated via use of the working portion of the tool with an object or surface, from a locality adjacent the working portion of the tool to a location remote from the working portion of the tool.
  • suction means can be provided with the device for sucking the debris and air from the working portion of the tool to the housing and debris collection bag remote from the working portion of the tool.
  • the advantage of providing the debris collection bag to be removably located with the housing allows the bag to be removed, replaced and/or repaired as often as required. Since the bag is located in the housing during use, the housing limits or prevents the spread of debris as a result of the bag becoming full, allows the user to easily transport the bag to a required location for emptying without moving the entire power tool and without spillage of debris.
  • the housing is detachably attached to the power tool to allow removal of the housing therefrom and/or for cleaning said housing.
  • the debris collection bag can be removed with the housing from the power tool, thereby allowing the debris collection to be transported in the housing to a suitable disposal point for emptying the debris from the housing.
  • the housing is detachably attached to said power tool via any or any combination of complementary screw threaded means, bayonet fitting, friction fit, screws, clips, ties and/or the like.
  • the housing and the debris collection bag are located at the rear of the power tool and typically remote from the working portion of the power tool, i.e. the saw, sanding plate, drill head and/or the like.
  • the debris collection bag is formed from a material which is sufficiently porous to allow air flow therethrough but which prevents the flow of debris therethrough.
  • a material is chosen having a suitable pore size, such as a polypropylene woven fabric.
  • the debris collection bag is typically formed, at least in part, from a substantially flexible material and the housing is typically formed from a substantially rigid material.
  • the present invention has the advantage that the housing provides an improved aesthetic appearance to the power tool whilst providing efficient debris extraction.
  • the provision of the debris collection bag being removably located in the housing allows emptying of the bag without the problems of spillage associated with the prior art.
  • the debris collection bag can be used a plurality of times and is typically formed from a material which allows the same to be washed and cleaned, thereby allowing reuse of the same.
  • the housing is provided with attachment means for detachably attaching said housing to said power tool in use and to allow removal of the collection bag for cleaning.
  • the debris collection bag is capable of being washed and reused to avoid the need for replacement of the bag on every emptying of the same.
  • the housing is provided in communication with the working portion via passages connecting the said at least one aperture at the working portion with the said housing.
  • a debris extraction system for use with a sanding device, said debris extraction system including at least one housing in which a debris collection bag is removably located therein.
  • the power tool is a sanding tool.
  • the sanding device includes a body portion, a sanding plate, a handle portion 8 attached to body portion and a debris extraction system 10 detachably attached to the rear 12 of the body portion 4.
  • the body portion 4 houses a motor and drive mechanism (not shown) which drives the movement of the sanding plate in one or more required directions.
  • a removable sanding member having the required abrasive properties on an outer surface thereof is detachably attached to the sanding plate in use, with the abrasive surface outermost. Movement of the sanding member against a particular surface results in sanding of said surface.
  • a user typically holds the device 2 via handle portion 8 against the surface and moves the device across the surface in a required direction in addition to the movement of the sanding plate via the drive means.
  • handle portion 8 attached to body portion and a debris extraction system 10 detachably attached to the rear 12 of the body portion 4.
  • the body portion 4 houses a motor and drive mechanism (not shown) which drives the movement of the sanding plate in one or more required directions.
  • a removable sanding member having the required abrasive properties on an outer surface thereof is detachably attached to the sanding plate in use, with the abrasive surface outermost. Movement of the sanding member against a particular surface results in sanding of said surface.
  • a user typically holds the device 2 via handle portion 8 against the surface and moves the device across the surface in a required direction in addition to the movement of the sanding plate via the drive means.
  • Control means in the form of a switch is provided on the body portion 4 to allow a user to move the sanding device between an 'on' condition, wherein the sanding plate is movable, and an 'off' condition, wherein the sanding plate is stationary, as required.
  • the motor and drive mechanism is powered by mains power supply delivered to the device along an electrical cable.
  • mains power supply delivered to the device along an electrical cable.
  • one or more batteries can be provided with the sanding device in addition to or as an alternative to said mains power supply.
  • debris extraction system 10 is provided with the sanding device.
  • the debris extraction system includes a housing 18, which is detachably attached to an outlet aperture 20 via a bayonet fitting 22.
  • Figure 1 illustrates the housing and the system in a fitted position for use.
  • Figure 2 illustrates the housing removed and shows the bayonet fittings 22.
  • the bayonet housing is first inserted into the aperture 20 as indicated by arrow 21 and then rotated as indicated by arrow 23.
  • FIG. 3 illustrates the components of the debris extraction system 10.
  • the same includes the outer housing 18, a debris collection bag 24, fitted to a neck portion 25 and an annular end fitting 27 in which the bayonet fittings 22 are formed.
  • the bag 24 is formed form a porous material having a plurality of pores therein which are of such a size so as to allow air flow therethrough but which prevents the flow of debris therethrough.
  • the debris collection bag 24 is removably fitted in housing 18 via a substantially rigid neck portion 25 typically formed from plastics and the substantially flexible porous material is typically heat sealed to the plastic during manufacturing.
  • An attachment portion in the form of an annular end fitting 27 is located over neck portion 25 to trap and secure the same between the end fitting and the housing 18.
  • the attachment of the end fitting to the housing is typically by a snap fit or threaded engagement and where required seals can be provided to prevent air loss at the join.
  • the housing is provided with a series of apertures 30 which allow air flow therethrough.
  • a pump (not shown) provided in body portion 4 of the power tool directs air flow, and therefore debris such as dust generated from the sanding process, from the sanding surface through a passage 26 formed in body portion 4, through outlet aperture 20 and into the debris extraction system 10.
  • the air and debris passes through the fitting 27 and into the debris collection bag 24 in housing 18.
  • the bag 24 serves to collect the debris and prevent the same passing further through the extraction system but the plurality of apertures 30 provided in the housing 18 allow the air which passes through the pores in the bag 24 to exit the housing as indicated by arrows 28.
  • the debris transported in the airflow from the power tool is prevented from passage through apertures 30 by the material from which the debris collection bag 24 is formed.
  • the user can detach housing 18 from body portion 4 by releasing the bayonet fitting. The user then disconnects the housing from the fitting 27 to remove the debris collection bag 24 and transports the bag, typically in the housing to prevent spillage, to a suitable location for emptying of bag 24. The bag can then be thrown away, reused or washed for reuse.
  • the housing 18 is formed from a substantially rigid material which allows easy transportation of the same without spillage of the debris therein and also prevent tears or other damage to the bag during use.
  • the present invention therefore provides a significant improvement in the extraction and collection of debris and other debris from power tools of the type such as a sanding device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Claims (8)

  1. Outil électrique (2), ledit outil électrique comprenant une partie formant corps (4), une partie de travail qui produit des débris pendant son emploi, des moyens de commande sélective d'activation pour fournir un mouvement d'entraînement de la partie de travail pendant son emploi, et des moyens d'extraction de débris (10) pour extraire les débris depuis la zone de travail et de la zone adjacente à celle-ci jusqu'à une position éloignée de ladite partie de travail, lesdits moyens d'extraction comprenant au moins une enveloppe (18) dans laquelle un sac de collecte de débris (24) est installé de façon détachable, l'enveloppe étant elle-même montée de façon détachable sur l'outil électrique et, une fois détachée, permettant de retenir et de transporter le sac de collecte de débris, l'enveloppe étant pourvue d'une ouverture ou davantage (30), et une partie au moins des parois du sac de collecte de débris étant pourvue de pores perméables à l'air qui permettent à l'air de circuler à travers l'enveloppe et le sac de collecte de débris, et caractérisé en ce que l'enveloppe est attachée au corps (4) de façon détachable, ce qui permet de positionner et de monter les moyens d'extraction de débris sur l'outil électrique pendant l'emploi de cet outil.
  2. Outil électrique selon la revendication 1, caractérisé en ce que les moyens d'extraction comprennent un passage de circulation d'air à travers lequel passent les débris qui proviennent de la partie de travail ou de la zone adjacente à celle-ci pour atteindre l'emplacement écarté de la partie de travail de l'outil.
  3. Outil électrique selon la revendication 2, caractérisé ence que la circulation de l'air à travers ledit au moins un passage est produite par des moyens d'aspiration.
  4. Outil électrique selon la revendication 1, caractérisé en ce que l'enveloppe est attachée de façon détachable audit outil électrique par l'intermédiaire d'un moyen quelconque, ou d'une combinaison quelconque de moyens filetés supplémentaires, de fixations à baïonnette, d'un assemblage à friction, ou de vis, pinces, attaches et/ou éléments semblables.
  5. Outil électrique selon la revendication 1, caractérisé en ce que l'enveloppe et le sac de collecte de débris sont placés sur l'outil électrique à l'arrière de la partie de travail.
  6. Outil électrique selon la revendication 1, caractérisé en ce que les débris qui sont recueillis se composent en majeure partie de fines particules de débris de bois ou de métal.
  7. Outil électrique selon la revendication 1, caractérisé en ce que ladite enveloppe communique avec la partie de travail par le biais d'au moins une ouverture prévue au niveau de la partie de travail ou adjacente à celle-ci, et d'un ou plusieurs passages (26) qui relie(relient) à ladite enveloppe ladite au moins une ouverture.
  8. Outil électrique selon la revendciation 1, caractérisé en ce que l'outil est un outil à poncer.
EP04254798A 2003-08-12 2004-08-10 Outil électrique et un système d'extraction de débris pour celle-lui Not-in-force EP1506840B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0218880 2003-08-12
GBGB0318880.2A GB0318880D0 (en) 2003-08-12 2003-08-12 Power tool and dust and debris extraction system therefor

Publications (2)

Publication Number Publication Date
EP1506840A1 EP1506840A1 (fr) 2005-02-16
EP1506840B1 true EP1506840B1 (fr) 2007-03-21

Family

ID=28052342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04254798A Not-in-force EP1506840B1 (fr) 2003-08-12 2004-08-10 Outil électrique et un système d'extraction de débris pour celle-lui

Country Status (6)

Country Link
US (1) US20050037699A1 (fr)
EP (1) EP1506840B1 (fr)
CN (1) CN1590019A (fr)
AT (1) ATE357310T1 (fr)
AU (1) AU2004203839B2 (fr)
GB (1) GB0318880D0 (fr)

Cited By (3)

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RU2449877C2 (ru) * 2006-12-27 2012-05-10 Роберт Бош Гмбх Ручная машина
US8967923B2 (en) 2012-01-13 2015-03-03 Aeg Electric Tools Gmbh Dust suction device for drilling machine
US10695880B2 (en) 2008-05-09 2020-06-30 Milwaukee Electric Tool Corporation Power tool dust collector

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DE102004056856A1 (de) * 2004-11-25 2006-06-01 Hilti Ag Grobabscheider
ITMI20060815A1 (it) * 2006-04-24 2007-10-25 Guido Valentini Contenitore di raccolta polvere con elemento palettato per utensile motorizzato con capacita' di aspirazione
DE202006017584U1 (de) * 2006-11-17 2007-02-08 Metabowerke Gmbh Absaugeinrichtung für ein motorisch angetriebenes Handwerkzeuggerät
WO2009086339A2 (fr) 2007-12-27 2009-07-09 3M Innovative Properties Company Dispositif collecteur de poussière pour outil de ponçage
JP5209374B2 (ja) 2008-05-29 2013-06-12 株式会社マキタ ダストボックス及び電動工具
US8382872B2 (en) 2008-12-23 2013-02-26 3M Innovative Properties Company Dust collection device for sanding tool
DE102010039152A1 (de) * 2010-08-10 2012-02-16 Robert Bosch Gmbh Gerät zur Oberflächenbehandlung, insbesondere Schleifgerät, Poliergerät od. dgl.
DE102010042433A1 (de) * 2010-10-14 2012-04-19 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine
US9788698B2 (en) 2014-12-10 2017-10-17 Irobot Corporation Debris evacuation for cleaning robots
USD818788S1 (en) 2016-07-14 2018-05-29 Alfred Kaercher Gmbh & Co. Kg Device for collecting drilling dust
USD803916S1 (en) * 2016-07-14 2017-11-28 Alfred Kaercher Gmbh & Co. Kg Drilling dust collector
USD864265S1 (en) * 2019-06-19 2019-10-22 The Dust Catcher, Inc. Dust catcher
EP3932277B1 (fr) * 2020-06-29 2022-09-14 Nanjing Chervon Industry Co., Ltd. Dispositif de collecte de poussière à cyclone et dispositif de broyage

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RU2449877C2 (ru) * 2006-12-27 2012-05-10 Роберт Бош Гмбх Ручная машина
US10695880B2 (en) 2008-05-09 2020-06-30 Milwaukee Electric Tool Corporation Power tool dust collector
US11077533B2 (en) 2008-05-09 2021-08-03 Milwaukee Electric Tool Corporation Power tool dust collector
US11712771B2 (en) 2008-05-09 2023-08-01 Milwaukee Electric Tool Corporation Power tool dust collector
US11883917B2 (en) 2008-05-09 2024-01-30 Milwaukee Electric Tool Corporation Power tool dust collector
US8967923B2 (en) 2012-01-13 2015-03-03 Aeg Electric Tools Gmbh Dust suction device for drilling machine

Also Published As

Publication number Publication date
ATE357310T1 (de) 2007-04-15
GB0318880D0 (en) 2003-09-17
US20050037699A1 (en) 2005-02-17
EP1506840A1 (fr) 2005-02-16
AU2004203839B2 (en) 2009-06-18
AU2004203839A1 (en) 2005-03-03
CN1590019A (zh) 2005-03-09

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