EP0279047A1 - Flexible dust bag coupling - Google Patents

Flexible dust bag coupling Download PDF

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Publication number
EP0279047A1
EP0279047A1 EP87118224A EP87118224A EP0279047A1 EP 0279047 A1 EP0279047 A1 EP 0279047A1 EP 87118224 A EP87118224 A EP 87118224A EP 87118224 A EP87118224 A EP 87118224A EP 0279047 A1 EP0279047 A1 EP 0279047A1
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EP
European Patent Office
Prior art keywords
dust
hand tool
pipe bends
dust bag
tool according
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Withdrawn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
EP87118224A
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German (de)
French (fr)
Inventor
Christian Gerber
Afred Schär
Walter Linder
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.)
Scintilla AG
Original Assignee
Scintilla AG
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 Scintilla AG filed Critical Scintilla AG
Publication of EP0279047A1 publication Critical patent/EP0279047A1/en
Withdrawn legal-status Critical Current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
    • 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 invention is based on a hand tool according to the type of the main claim.
  • Different versions of dust extraction devices e.g. for orbital sanders - deal with the absorption and transfer of the grinding dust (see e.g. DE-PS 34 13 028), but only provide an unchangeable position of the dust container if the dust container is placed directly on the tool (see e.g. EP-PS 01 68 531 or DE-GM 70 40 819). It is disadvantageous in these known designs that the dust collection container hinders the grinding process or the view from the workpiece when machining hard-to-reach places.
  • Dust collection containers that are separate from the working device and are connected to the sleeper by a flexible hose, at least in the first place, restrict the degree of freedom of the worker, which is why attempts have been made to minimize this hindrance by combining the dust extraction and supply lines (see, for example, DE- OS 25 12 435).
  • a relatively thick feed or discharge in turn reduces the maneuverability of the machine.
  • the arrangement according to the invention with the characterizing features of the main claim has the advantages of better maneuverability in poorly accessible places and a better view of the workpiece compared to versions with a fixed position of the dust collection container.
  • the greater manageability is advantageous, since only a thin, preferably electrical feed line emanates from the device, which hinders handling much less than a suction line.
  • FIG. 1 shows a top view of the conventional arrangement of the dust collection container on an orbital sander in an unchangeable position
  • FIG. 2 shows the same hand power tool to which the dust collection container according to an embodiment of the invention is shown 3 and 4, the hand-held power tool according to FIG. 2 is shown in a top view and a side view, the dust collection container being connected to the machine in a changed position.
  • the orbital sander 1 shown in Figure 1 has a connecting piece 2, to which a dust collector 5 is connected in a known manner. The latter can only be connected to the machine in this one predetermined position.
  • the dust collecting container 5 is connected to the connecting piece 2 via two pipe bends 3 and 4.
  • the pipe bends 3 and 4 form, each individually, a right angle and can be rotated at their junctions with the connecting piece 2 and the dust collector 5, as well as with each other, so that the position of the dust collector 5 to the machine 1 adapted to the respective conditions is selected can be.
  • the fit of the plug-in connection of the pipe bends with a circular cross-section is dimensioned such that the frictional torque present at the connection points forming the joints is greater in every position than the moment caused by the weight of the filled dust-collecting container 5.
  • the pipe bends 3 and 4 have a polygonal cross section. Here changes in the position of the dust collecting container 5 can be achieved by repositioning the pipe bends 3 and 4.

Abstract

A flexible dust bag coupling for a hand tool is proposed which enables the position of the dust-collecting container relative to the hand tool to be changed in a simple manner without the help of the tool. The use of several angular tube bends inserted one behind the other is proposed for this purpose. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht von einer Handwerkzeugmaschine nach der Gattung des Hauptanspruchs aus. Verschiedene Ausführungen von Staubabsaug­einrichtungen - z.B. bei Schwingschleifern - befaßten sich mit der Aufnahme und Weiterleitung des anfallenden Schleifstaubs (siehe z.B. DE-PS 34 13 028), sehen jedoch im Falle einer Unterbringung des Staubsammelbehälters direkt am Werkzeug nur eine unveränderbare Lage desselben vor (siehe z.B. EP-PS 01 68 531 oder DE-GM 70 40 819). Un­vorteilhaft ist bei diesen bekannten Ausführungen, daß der Staub­sammelbehälter bei der Bearbeitung schwer zugänglicher Stellen den Schleifvorgang oder die Sicht aus das Werkstück behindert. Auch vom Arbeitsgerät getrennte Staubsammelbehälter, die mit der Schliefma­schine über einen flexiblen Schlauch verbunden sind, engen zumindest in ersterer Hinsicht den Freiheitsgrad des Arbeitenden ein, weshalb auch versucht wurde, diese Behinderung durch Zusammenlegen der Staubabsaug- mit der Vorsorgungsleitung zu minimieren (siehe z.B. DE-OS 25 12 435). Eine dadurch relativ dicke Zu- bzw. Ableitung ver­mindert jedoch wiederum die Handlichkeit der Maschine.The invention is based on a hand tool according to the type of the main claim. Different versions of dust extraction devices - e.g. for orbital sanders - deal with the absorption and transfer of the grinding dust (see e.g. DE-PS 34 13 028), but only provide an unchangeable position of the dust container if the dust container is placed directly on the tool (see e.g. EP-PS 01 68 531 or DE-GM 70 40 819). It is disadvantageous in these known designs that the dust collection container hinders the grinding process or the view from the workpiece when machining hard-to-reach places. Dust collection containers that are separate from the working device and are connected to the sleeper by a flexible hose, at least in the first place, restrict the degree of freedom of the worker, which is why attempts have been made to minimize this hindrance by combining the dust extraction and supply lines (see, for example, DE- OS 25 12 435). However, a relatively thick feed or discharge in turn reduces the maneuverability of the machine.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Anordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat gegenüber Ausführungen mit fester Position des Staubsammelbehälters die Vorteile der besseren Manövrierfähigkeit an schlecht zugänglichen Stellen und der besseren Sicht auf das Werk­stück.The arrangement according to the invention with the characterizing features of the main claim has the advantages of better maneuverability in poorly accessible places and a better view of the workpiece compared to versions with a fixed position of the dust collection container.

Gegenüber Anordnungen mit getrenntem Staubsammelbehälter ist die größere Handlichkeit vorteilhaft, da nur eine dünne, vorzugsweise elektrische Zuleitung vom Gerät ausgeht, die die Handhabung viel weniger als eine Absaugleitung behindert.Compared to arrangements with a separate dust collection container, the greater manageability is advantageous, since only a thin, preferably electrical feed line emanates from the device, which hinders handling much less than a suction line.

Als weiterer Vorteil ist anzusehen, daß sich die im Ausführungsbei­spiel dargestellte und in den Unteransprüchen aufgeführte Lösung schon mit zwei, noch dazu identischen Teilen realisieren läßt. Bei Verwendung von Rohrbögen mit rundem Querschnitt sind zahlreiche An­ordnungsvarianten zwischen Gerät und Staubsaugerbehälter möglich. Besonders vorteilhaft ist auch in Abwandlung des zeichnerisch dar­gestellten Ausführungsbeispiels die mittige Anordnung der Abluft­öffnung an der rückwärtigen Schmalseite der Maschine, was die Anord­nung des Staubsammelbehältes auf beiden Seiten der Maschine ermög­licht und sie somit für Links- wie Rechtshänder geeignet macht.Another advantage is that the solution shown in the exemplary embodiment and listed in the subclaims can be implemented with two parts which are identical in addition. When using pipe bends with a round cross-section, numerous arrangement variants between the device and the vacuum cleaner container are possible. The central arrangement of the exhaust air opening on the rear narrow side of the machine is also particularly advantageous in a modification of the exemplary embodiment shown in the drawing, which enables the dust collecting container to be arranged on both sides of the machine and thus makes it suitable for left-handed and right-handed people.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen darge­stellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 in Draufsicht zunächst die herkömmliche Anordnung des Staubsammelbehälters an einem Schwingschleifer in unveränderbarer Position, Figur 2 zeigt die gleiche Handwerkzeugmaschine, an die der Staubsammelbehälter gemäß einem Ausführungsbeispiel der Erfindung angeschlossen ist, in den Figuren 3 und 4 ist die Handwerkzeugma­schine nach Figur 2 in Draufsicht bzw. in Seitenansicht gezeigt, wo­bei der Staubsammelbehälter in veränderter Position an die Maschine angeschlossen ist.An embodiment of the invention is shown in the drawings and explained in more detail in the following description. FIG. 1 shows a top view of the conventional arrangement of the dust collection container on an orbital sander in an unchangeable position, FIG. 2 shows the same hand power tool to which the dust collection container according to an embodiment of the invention is shown 3 and 4, the hand-held power tool according to FIG. 2 is shown in a top view and a side view, the dust collection container being connected to the machine in a changed position.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Der in Figur 1 gezeigte Schwingschleifer 1 hat ein Anschlußstutzen 2, dem in bekannter Weise ein Staubsammelbehälter 5 angeschlossen ist. Letzterer kann nur in dieser einen, vorgegebenen Position mit der Maschine verbunden werden.The orbital sander 1 shown in Figure 1 has a connecting piece 2, to which a dust collector 5 is connected in a known manner. The latter can only be connected to the machine in this one predetermined position.

Bei dem in den Figuren 2 bis 4 gezeigten Ausführungsbeispiel der Er­findung ist der Staubsammelbehälter 5 über zwei Rohrbögen 3 und 4 mit dem Anschlußstutzen 2 verbunden. Die Rohrbögen 3 und 4 bilden, jeder für sich, einen rechten Winkel und lassen sich an ihren Ver­bindungsstellen mit dem Anschlußstutzen 2 und dem Staubsammelbe­hälter 5, sowie auch untereinander verdrehen, so daß die den jewei­ligen Verhältnissen angepaßte Stellung des Staubsammelbehälters 5 zu der Maschine 1 ausgewählt werden kann. Die Passung der Steckverbin­dung der Rohrbögen mit kreisförmigem Querschnitt ist dabei so bemes­sen, daß das an den die Gelenke bildenden Verbindungsstellen vorhan­dene Reibmoment in jeder Stellung größer ist als das durch das Eigengewicht des gefüllten Staubsammelbehälters 5 bewirkte Moment. Bei einem weiteren, in den Zeichnungen nicht dargestelltem Ausfüh­rungsbeispiel weisen die Rohrbögen 3 und 4 einen vielkantigen Quer­schnitt auf. Hier können Lageveränderungen des Staubsammelbehälters 5 durch Umstecken der Rohrbögen 3 und 4 erreicht werden.In the exemplary embodiment of the invention shown in FIGS. 2 to 4, the dust collecting container 5 is connected to the connecting piece 2 via two pipe bends 3 and 4. The pipe bends 3 and 4 form, each individually, a right angle and can be rotated at their junctions with the connecting piece 2 and the dust collector 5, as well as with each other, so that the position of the dust collector 5 to the machine 1 adapted to the respective conditions is selected can be. The fit of the plug-in connection of the pipe bends with a circular cross-section is dimensioned such that the frictional torque present at the connection points forming the joints is greater in every position than the moment caused by the weight of the filled dust-collecting container 5. In a further embodiment, not shown in the drawings, the pipe bends 3 and 4 have a polygonal cross section. Here changes in the position of the dust collecting container 5 can be achieved by repositioning the pipe bends 3 and 4.

Claims (4)

1. Handwerkzeugmaschine, vorzugsweise mit elektrischem Antrieb, zur schleifenden Bearbeitung von Werkstücken, wobei eine Staubabsaug­und -sammeleinrichtung direkt mit dem Gerät verbunden ist, dadurch gekennzeichnet, daß zwischen dem Anschlußstutzen (2) Gerätes (1) und dem Staubsammelbehälter (5) mindestens zwei, in ihren jeweiligen Relativstellungen zueinander veränderbare Zwischenstücke (3, 4) an­geordnet sind.1. handheld power tool, preferably with an electric drive, for grinding workpieces, a dust extraction and collection device being connected directly to the device, characterized in that between the connecting piece (2) device (1) and the dust collection container (5) at least two, in their respective relative positions mutually changeable intermediate pieces (3, 4) are arranged. 2. Handwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Zwischenstücke (3 und 4) durch zwei winkelförmige Rohrbögen gebildet werden.2. Hand tool according to claim 1, characterized in that the intermediate pieces (3 and 4) are formed by two angular pipe bends. 3. Handwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekenn­zeichnet, daß die Rohrbögen (3 und 4) kreisrunden Querschnitt haben.3. Hand tool according to one of claims 1 or 2, characterized in that the pipe bends (3 and 4) have a circular cross-section. 4. Handwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekenn­zeichnet, daß die Rohrbögen einen vielkantigen Querschnitt haben.4. Hand tool according to one of claims 1 or 2, characterized in that the pipe bends have a polygonal cross section.
EP87118224A 1987-01-31 1987-12-09 Flexible dust bag coupling Withdrawn EP0279047A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873702960 DE3702960A1 (en) 1987-01-31 1987-01-31 FLEXIBLE DUST BAG COUPLING
DE3702960 1987-01-31

Publications (1)

Publication Number Publication Date
EP0279047A1 true EP0279047A1 (en) 1988-08-24

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ID=6319991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118224A Withdrawn EP0279047A1 (en) 1987-01-31 1987-12-09 Flexible dust bag coupling

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EP (1) EP0279047A1 (en)
JP (1) JPS63196376A (en)
DE (1) DE3702960A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655585A1 (en) * 1989-12-13 1991-06-14 Ryobi Motor Products Corp PORTABLE SURFACE TREATMENT TOOL, SUCH AS A SANDER, COMPRISING A DEBRIS COLLECTION CONTAINER.
EP1293298A2 (en) * 2001-09-13 2003-03-19 Robert Bosch Gmbh Power tool with dust extraction
GB2393143A (en) * 2002-09-23 2004-03-24 Bosch Gmbh Robert Hand held machine tool with detachable dust box
EP1428619A1 (en) * 2002-12-09 2004-06-16 Black & Decker Inc. Planer
US7296603B2 (en) 2002-12-09 2007-11-20 Black & Decker Inc. Debris collection container for a planer
US7299838B2 (en) 2002-12-09 2007-11-27 Black & Decker Inc. Debris collection container for a planer
US7299839B2 (en) 2002-12-09 2007-11-27 Black & Decker Inc. Debris collection system for a planer
US7422040B2 (en) 2002-12-09 2008-09-09 Black & Decker Inc. Debris collection container for a planer
US7455090B2 (en) 2002-12-09 2008-11-25 Black & Decker Inc. Debris collection system for a planer
US7549450B2 (en) 2002-12-09 2009-06-23 Black & Decker Inc. Debris collection system for a planer
WO2022083960A1 (en) * 2020-10-20 2022-04-28 Robert Bosch Gmbh Material collection device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843912A1 (en) * 1988-12-24 1990-06-28 Metabowerke Kg Powered handtool with chip duct and extracting connection
US5518442A (en) * 1993-01-22 1996-05-21 Porter-Cable Corporation Sander
US5941765A (en) * 1996-11-19 1999-08-24 Porter Cable Corporation Sander
CN105107792A (en) * 2015-07-01 2015-12-02 于浩 Desk type valve grinder dust cleaner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268863A (en) * 1939-04-28 1942-01-06 Porter Cable Machine Company I Disk abrading machine
US3325948A (en) * 1964-03-11 1967-06-20 Skil Corp Belt sander
FR1579627A (en) * 1968-05-17 1969-08-29
DE7040819U (en) * 1971-02-18 Mafell Maschinenfab R Mey Grinders, especially vibration grinders with a dust extractor
DE2512435A1 (en) * 1974-03-22 1975-09-25 Atlas Copco Ab DUST REMOVAL DEVICE ON A PNEUMATIC GRINDING MACHINE, IN PARTICULAR HAND GRINDING MACHINE
EP0168531A1 (en) * 1983-04-26 1986-01-22 Skil Nederland B.V. Sanding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7040819U (en) * 1971-02-18 Mafell Maschinenfab R Mey Grinders, especially vibration grinders with a dust extractor
US2268863A (en) * 1939-04-28 1942-01-06 Porter Cable Machine Company I Disk abrading machine
US3325948A (en) * 1964-03-11 1967-06-20 Skil Corp Belt sander
FR1579627A (en) * 1968-05-17 1969-08-29
DE2512435A1 (en) * 1974-03-22 1975-09-25 Atlas Copco Ab DUST REMOVAL DEVICE ON A PNEUMATIC GRINDING MACHINE, IN PARTICULAR HAND GRINDING MACHINE
EP0168531A1 (en) * 1983-04-26 1986-01-22 Skil Nederland B.V. Sanding device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655585A1 (en) * 1989-12-13 1991-06-14 Ryobi Motor Products Corp PORTABLE SURFACE TREATMENT TOOL, SUCH AS A SANDER, COMPRISING A DEBRIS COLLECTION CONTAINER.
EP1293298A2 (en) * 2001-09-13 2003-03-19 Robert Bosch Gmbh Power tool with dust extraction
EP1293298A3 (en) * 2001-09-13 2003-08-06 Robert Bosch Gmbh Power tool with dust extraction
GB2393143B (en) * 2002-09-23 2005-08-03 Bosch Gmbh Robert Hand-held machine tool with dust extraction
GB2393143A (en) * 2002-09-23 2004-03-24 Bosch Gmbh Robert Hand held machine tool with detachable dust box
US7108028B2 (en) 2002-12-09 2006-09-19 Black & Decker Inc. Debris collection container for a planer
EP1428619A1 (en) * 2002-12-09 2004-06-16 Black & Decker Inc. Planer
US7296603B2 (en) 2002-12-09 2007-11-20 Black & Decker Inc. Debris collection container for a planer
US7299838B2 (en) 2002-12-09 2007-11-27 Black & Decker Inc. Debris collection container for a planer
US7299839B2 (en) 2002-12-09 2007-11-27 Black & Decker Inc. Debris collection system for a planer
US7422040B2 (en) 2002-12-09 2008-09-09 Black & Decker Inc. Debris collection container for a planer
US7455090B2 (en) 2002-12-09 2008-11-25 Black & Decker Inc. Debris collection system for a planer
US7549450B2 (en) 2002-12-09 2009-06-23 Black & Decker Inc. Debris collection system for a planer
WO2022083960A1 (en) * 2020-10-20 2022-04-28 Robert Bosch Gmbh Material collection device

Also Published As

Publication number Publication date
JPS63196376A (en) 1988-08-15
DE3702960A1 (en) 1988-08-11

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