EP1321228B1 - Grinding tool with suction hood - Google Patents

Grinding tool with suction hood Download PDF

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Publication number
EP1321228B1
EP1321228B1 EP02406077A EP02406077A EP1321228B1 EP 1321228 B1 EP1321228 B1 EP 1321228B1 EP 02406077 A EP02406077 A EP 02406077A EP 02406077 A EP02406077 A EP 02406077A EP 1321228 B1 EP1321228 B1 EP 1321228B1
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EP
European Patent Office
Prior art keywords
housing
grinding tool
cover
free end
accordance
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.)
Expired - Lifetime
Application number
EP02406077A
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German (de)
French (fr)
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EP1321228A1 (en
Inventor
Oliver Ohlendorf
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.)
Hilti AG
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Hilti AG
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Publication date
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Priority to DK02406077T priority Critical patent/DK1321228T3/en
Publication of EP1321228A1 publication Critical patent/EP1321228A1/en
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Publication of EP1321228B1 publication Critical patent/EP1321228B1/en
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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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; 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
    • 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 invention relates to a grinding device with a exhaust hood in the preamble of the patent claim 1 mentioned type.
  • Such grinders have a suction hood to be powered by a motor driven tools abraded abraded from a surface to be machined Particles, especially dust particles to suck out of a work area of the grinder.
  • EP215476 is a grinder with a housing and a motor driven Drive spindle, at whose, the housing protruding, free end a tool holder is provided, known.
  • On the housing closes the free end of the drive spindle surrounding suction hood open to the tool holder, which is an upper part and an adjoining thereto, designed for tool holder open bottom part having.
  • a disadvantage of the known solution is that the grinder is insufficient in the field one, the surface to be machined bordering edge surface is applicable, since the lower part prevents positioning of the tool in the immediate vicinity of the surface.
  • a disassembly The suction hood from the other grinder not only means a lot of effort for a user, in addition, the application of the grinder without suction hood, especially with a concrete surface, to an unacceptable load the environment and the user by ablated particles.
  • a grinder with a suction hood wherein the suction hood a firmly connected to the housing of the grinder main body and a can be arranged on the body, circular segment-like cover member comprises.
  • the cover is detachably secured to the body.
  • On the main body is a Extraction nozzle intended for the connection of a suction hose.
  • a disadvantage of this known solution is that the cover can be lost. Moreover are the positioning options of the grinder with respect to the processed Surface on the limited by the, by means of the cover recess.
  • a grinder with a suction hood is known, wherein the suction hood a permanently connected to the housing of the grinder adapter part and a limited between two stop bolts rotatably mounted on the adapter part hood body includes.
  • On the hood body is a circular section, articulated via a hinge Cover provided, which can be folded up. Furthermore, at the Hood body exhaust pipe provided.
  • a disadvantage of this known solution is that the positioning of the Grinding device with respect to the surface to be machined on the of, by means of the cover Shared recess are restricted.
  • the present invention is based on the object, a grinding device with a suction hood to create an editing of a hard-to-reach surface and a ensures sufficient suction power.
  • The, spanned by the recess, plane is transverse to the longitudinal direction the drive spindle. This is an optimal extraction, especially at level and ensures substantially perpendicular to the surface extending edge surfaces, since on the one hand a tool reaching the application can be brought to the edge surface and on the other hand between the edge surface and the peripheral recess in contact the lower part with the edge surface is a seal between the two parts.
  • the recess can be closed by a cover to a Grinding process of the surface, which is outside the bounding surface is a maximum Ensure suction power.
  • the cover is pivotally mounted relative to the lower part to a handy To ensure closure and opening of the recess.
  • the cover can also be used as a regulating mechanism for the suction line. In this Use case is the recess of the lower part by the cover only partially to close.
  • the lower part is rotatably mounted on the housing to a positioning of the To allow recess against the housing.
  • the housing relative to the Lower part, in particular the recess to position.
  • the cover is preferably formed complementary to the recess to a compact Ensure training of the cover.
  • the cover depends on the conditions also a different geometry possible, for example, the Form cover ring.
  • the cover is advantageously rigid on the housing, in particular in the region of a guide handle of the grinder, stored to ensure easy handling.
  • the lower part is advantageously relative to the upper part substantially around the longitudinal axis
  • the drive spindle is pivotable to ensure optimum positioning of the two part to ensure each other.
  • this embodiment is advantageous because the two Parts are mutually movable, in particular pivotable.
  • the top is preferably opposite the housing substantially about the longitudinal axis the drive spindle pivoted to an adjustment of the upper part relative to the housing permit.
  • the truncated conical outer contour 18 having top 6 is about the longitudinal direction L of the drive spindle 2 pivotable and non-displaceable in the longitudinal direction L on Housing 1 stored.
  • On the outer contour 18 has an outwardly extending Exhaust nozzle 12, through which a vacuum source, not shown with the through Extraction hood 5 formed interior is connectable.
  • the upper part 6 At the longitudinal direction L of the drive spindle 2 side facing away from the tool holder 4, the upper part 6 a Holding part 19 on.
  • lower part 7 has a free End 3 and transversely to the longitudinal direction L of the drive spindle 2 open recess 8.
  • the plane or surface spanned by the recess 8 corresponds to 0.07 times the enclosed by the free end 9 of the lower part 7, suction opening 10.
  • the through the Recess 8 spanned plane extends transversely to the longitudinal direction L of the drive spindle. 2 A, for example, by a snap connection fastened to the lower part 7, cover 11 allows a closure of the recess 8 and thereby a maximum suction power.
  • the cover 11 is formed substantially complementary to the recess 8.
  • the lower part 7 has at the free end a dust curtain, for example a in the longitudinal direction L extending bristle rim 14, on, the free end of the lower part 7 bounded.
  • the bristle rim 14 is made of an elastic material produced.
  • the suction hood 5 also has an exhaust bracket 15. The one pivotable and axial mounting of the upper part 6 and the lower part 7 on the housing. 1 ensures.
  • the suction holder 15 has a frustoconical cage element 16, and a side facing away from the longitudinal direction L of the tool holder 4 sides of the cage element 16 subsequent tubular-shaped holding element 17, which with the Holding part 19 of the upper part 6 cooperates.
  • the lower part 7 adjoins the longitudinal direction L of the tool holder 4 facing side of the cage member 16th and is integrally formed with this.
  • the lower part 7 is rotationally fixed and longitudinally L immovably mounted on the suction holder 15.
  • the with recesses 24 provided cage element 16 serves to support the upper part 6 and has on the outer contour same slope up.
  • the housing 1 has a tubular shape in the longitudinal direction L on the end facing the tool trained, for reasons of clarity, not shown, receiving part, which cooperates with the holding elements 17.
  • a on the outer contour of the holding part 19 of the upper part 6 mounted clamping fixture 22 is the entire suction hood, in particular the upper part 6, the lower part 7 and the cage element 16 on the housing 1 Reibund / or lockable.
  • the clamping attachment 22 has, for example, a Tensioning lever mechanism for releasably securing the upper part 6 and the lower part 7 am Housing 1 on.
  • the cylinder-segment-shaped cover member 11 is connected by a connecting web 21, in particular an elastic connecting web 21, connected to the upper part 6. At his the free end facing the cover 11 has a dust curtain, For example, a bristle rim 23.
  • the cover 11 is tubular and pivotable on the lower part. 7 and / or the cage element 16 stored. By pivoting the cover 11 against the lower part 7, the recess 8 is closed.

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)
  • Disintegrating Or Milling (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Prevention Of Fouling (AREA)
  • Shovels (AREA)

Abstract

The grinding apparatus has a casing (1) and a motor-driven drive spindle (2) with a tool receiver (4) on its free end (3). The hood (5) encloses this free end. The hood has an upper part (6) connected to a lower part (7) open to the tool receiver. The upper part can turn about the longitudinal direction (L) of the drive spindle and is fixed against the casing in this direction.

Description

Die Erfindung betrifft ein Schleifgerät mit einer Absaughaube der im Oberbegriff des Patentanspruchs 1 genannten Art.The invention relates to a grinding device with a exhaust hood in the preamble of the patent claim 1 mentioned type.

Solche Schleifgeräte weisen eine Absaughaube auf, um durch ein motorisch angetriebene Werkzeug abrasiv von einer zu bearbeitenden Oberfläche abgetragene Partikel, insbesondere Staubpartikel, aus einem Arbeitsbereich des Schleifgerätes abzusaugen.Such grinders have a suction hood to be powered by a motor driven tools abraded abraded from a surface to be machined Particles, especially dust particles to suck out of a work area of the grinder.

Aus der EP215476 ist ein Schleifgerät mit einem Gehäuse und einer motorisch angetriebenes Antriebsspindel, an deren, das Gehäuse überragenden, freien Ende eine Werkzeugaufnahme vorgesehen ist, bekannt. An das Gehäuse schliesst eine das freie Ende der Antriebsspindel umgebende, zur Werkzeugaufnahme hin offene Absaughaube an, die ein Oberteil und ein daran anschliessendes, zur Werkzeugaufnahme hin offen ausgebildetes Unterteil aufweist.From EP215476 is a grinder with a housing and a motor driven Drive spindle, at whose, the housing protruding, free end a tool holder is provided, known. On the housing closes the free end of the drive spindle surrounding suction hood open to the tool holder, which is an upper part and an adjoining thereto, designed for tool holder open bottom part having.

Nachteilig an der bekannten Lösung ist, dass das Schleifgerät nur unzureichend im Bereich einer, die zu bearbeitende Oberfläche berandende, Randfläche anwendbar ist, da das Unterteil ein Positionieren des Werkzeuges in unmittelbarer Nähe der Fläche verhindert. Eine Demontage der Absaughaube vom übrigen Schleifgerät bedeutet nicht nur einen grossen Aufwand für einen Anwender, ausserdem führt die Anwendung des Schleifgeräts ohne Absaughaube, insbesondere bei einer Oberfläche aus Beton, zu einer nicht akzeptablen Belastung der Umgebung und des Anwenders durch abgetragene Partikel. A disadvantage of the known solution is that the grinder is insufficient in the field one, the surface to be machined bordering edge surface is applicable, since the lower part prevents positioning of the tool in the immediate vicinity of the surface. A disassembly The suction hood from the other grinder not only means a lot of effort for a user, in addition, the application of the grinder without suction hood, especially with a concrete surface, to an unacceptable load the environment and the user by ablated particles.

Aus der EP 1 074 341 A2 ist ein Schleifgerät mit einer Absaughaube bekannt, wobei die Absaughaube einen fest mit dem Gehäuse des Schleifgerätes verbundenen Grundkörper und einen an dem Grundkörper anordnenbaren, kreisabschnittartig ausgebildeten Abdeckteil umfasst. Der Abdeckteil ist lösbar an dem Grundkörper festlegbar. An dem Grundkörper ist ein Absaugstutzen für den Anschluss eines Saugschlauches vorgesehen.From EP 1 074 341 A2 a grinder with a suction hood is known, wherein the suction hood a firmly connected to the housing of the grinder main body and a can be arranged on the body, circular segment-like cover member comprises. The cover is detachably secured to the body. On the main body is a Extraction nozzle intended for the connection of a suction hose.

Nachteilig an dieser bekannten Lösung ist, dass das Abdeckteil verloren werden kann. Zudem sind die Positionierungsmöglichkeiten des Schleifgerätes bezüglich der zu bearbeitenden Oberfläche auf den von der, mittels des Abdeckteils freigegebenen Ausnehmung eingeschränkt.A disadvantage of this known solution is that the cover can be lost. moreover are the positioning options of the grinder with respect to the processed Surface on the limited by the, by means of the cover recess.

Aus der US 4 622 782 A ist ein Schleifgerät mit einer Absaughaube bekannt, wobei die Absaughaube ein fest mit dem Gehäuse des Schleifgerätes verbundenes Adapterteil und einen begrenzt zwischen zwei Anschlagsbolzen drehbar am Adapterteil gelagerten Haubenkörper umfaßt. An dem Haubenkörper ist ein kreisabschnittartiges, über ein Scharnier angelenktes Abdeckteil vorgesehen, welches hochgeklappt werden kann. Des Weiteren sind an dem Haubenkörper Absaugstutzen vorgesehen.From US 4 622 782 A a grinder with a suction hood is known, wherein the suction hood a permanently connected to the housing of the grinder adapter part and a limited between two stop bolts rotatably mounted on the adapter part hood body includes. On the hood body is a circular section, articulated via a hinge Cover provided, which can be folded up. Furthermore, at the Hood body exhaust pipe provided.

Nachteilig an dieser bekannten Lösung ist, dass die Positionierungsmöglichkeiten des Schleifgerätes bezüglich der zu bearbeitenden Oberfläche auf den von der, mittels des Abdeckteils freigegebenen Ausnehmung eingeschränkt sind. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Schleifgerät mit einer Absaughaube zu schaffen, das eine Bearbeitung einer schwer zugänglichen Oberfläche und eine ausreichende Absaugleistung sicherstellt.A disadvantage of this known solution is that the positioning of the Grinding device with respect to the surface to be machined on the of, by means of the cover Shared recess are restricted. The present invention is based on the object, a grinding device with a suction hood to create an editing of a hard-to-reach surface and a ensures sufficient suction power.

Erfindungsgemäss wird die Aufgabe durch die im Anspruch 1 genannten Merkmale gelöst.According to the invention the object is achieved by the features mentioned in claim 1.

Dadurch, dass das Unterteil eine periphere Ausnehmung aufweist, ist es möglich das Schleifgerät in diesem Bereich nahe an eine die zu bearbeitende Oberfläche berandende Randfläche zu positionieren und somit die gesamte, insbesondere die an die Randfläche angrenzende, Oberfläche zu bearbeiten. Um eine ausreichende Absaugleistung sicherzustellen, ist es ausserdem notwendig, dass die Ausnehmung im Verhältnis zur Absaugöffnung nicht zu gross dimensioniert ist. Je kleiner die Öffnung, desto besser ist die Absaugleistung, jedoch verhindert eine zu klein ausgebildete Öffnung eine vollständige Bearbeitung der Oberfläche im Bereich der Randfläche.The fact that the lower part has a peripheral recess, it is possible that Grinder in this area close to a surface to be machined bordering To position edge surface and thus the entire, in particular to the edge surface adjacent to edit surface. To ensure a sufficient suction power, It is also necessary that the recess in relation to the suction opening not too big. The smaller the opening, the better the suction power, However, a too small opening prevents complete processing of the Surface in the area of the edge surface.

Die, durch die Ausnehmung aufgespannte, Ebene verläuft quer zur Längsrichtung der Antriebsspindel. Damit ist eine optimale Absaugleistung insbesondere bei ebenen und im wesentlichen senkrecht zur Oberfläche verlaufenden Randflächen gewährleistet, da einerseits ein zur Anwendung gelangendes Werkzeug bis an die Randfläche bringbar ist und andererseits zwischen der Randfläche und der peripheren Ausnehmung bei einem Kontakt des Unterteils mit der Randfläche eine Abdichtung zwischen den beiden Teilen erfolgt.The, spanned by the recess, plane is transverse to the longitudinal direction the drive spindle. This is an optimal extraction, especially at level and ensures substantially perpendicular to the surface extending edge surfaces, since on the one hand a tool reaching the application can be brought to the edge surface and on the other hand between the edge surface and the peripheral recess in contact the lower part with the edge surface is a seal between the two parts.

Die Ausnehmung ist durch ein Abdeckteil verschliessbar, um bei einem Schleifvorgang der Oberfläche, die ausserhalb der berandenden Fläche liegt eine maximale Absaugleistung sicherzustellen.The recess can be closed by a cover to a Grinding process of the surface, which is outside the bounding surface is a maximum Ensure suction power.

Das Abdeckteil ist relativ zum Unterteil verschwenkbar gelagert, um ein handliches Verschliessen und Öffnen der Ausnehmung zu gewährleisten. Selbstverständlich ist das Abdeckteil auch als Regulierungsmechanismus für die Absaugleitung einsetzbar. In diesem Anwendungsfall ist die Ausnehmung des Unterteils durch das Abdeckteil nur teilweise zu Verschliessen. The cover is pivotally mounted relative to the lower part to a handy To ensure closure and opening of the recess. Of course it is the cover can also be used as a regulating mechanism for the suction line. In this Use case is the recess of the lower part by the cover only partially to close.

Das Unterteil ist drehbar am Gehäuse gelagert, um eine Positionierung der Ausnehmung gegenüber dem Gehäuse zu ermöglichen. Je nach Ausbildung der Aussenkontur des Gehäuses ist es einem Anwender dadurch möglich, das Gehäuse gegenüber dem Unterteil, insbesondere der Ausnehmung, zu positionieren.The lower part is rotatably mounted on the housing to a positioning of the To allow recess against the housing. Depending on the design of the outer contour of the housing, it is possible for a user, the housing relative to the Lower part, in particular the recess to position.

Das Abdeckteil ist vorzugsweise komplementär zur Ausnehmung ausgebildet, um eine kompakte Ausbildung des Abdeckteils sicherzustellen. Selbstverständlich ist es je nach Rahmenbedingungen auch eine davon abweichende Geometrie möglich, beispielsweise den Abdeckteil ringförmig auszubilden.The cover is preferably formed complementary to the recess to a compact Ensure training of the cover. Of course, it depends on the conditions also a different geometry possible, for example, the Form cover ring.

Das Abdeckteil ist vorteilhafterweise starr am Gehäuse, insbesondere im Bereich eines Führungsgriffes des Schleifgerätes, gelagert um eine einfache Handhabung sicherzustellen.The cover is advantageously rigid on the housing, in particular in the region of a guide handle of the grinder, stored to ensure easy handling.

Das Unterteil ist vorteilhafterweise relativ zum Oberteil im wesentlichen um die Längsachse der Antriebsspindel verschwenkbar, um eine optimale Positionierung der beiden Teil gegenüber einander sicherzustellen. Insbesondere falls das Oberteil einen, mit einer Unterdruckquelle verbindbaren, Absaugstutzen aufweist, ist diese Ausführung vorteilhaft, da die beiden Teile gegeneinander bewegbar, insbesondere verschwenkbar sind.The lower part is advantageously relative to the upper part substantially around the longitudinal axis The drive spindle is pivotable to ensure optimum positioning of the two part to ensure each other. In particular, if the upper part, with a vacuum source connectable, suction has, this embodiment is advantageous because the two Parts are mutually movable, in particular pivotable.

. Das Oberteil ist vorzugsweise gegenüber dem Gehäuse im wesentlichen um die Längsachse der Antriebsspindel verschwenkbar, um eine Justierung des Oberteils gegenüber dem Gehäuse zuzulassen., The top is preferably opposite the housing substantially about the longitudinal axis the drive spindle pivoted to an adjustment of the upper part relative to the housing permit.

Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. Es zeigen:

  • Fig. 1 eine perspektivische Darstellung eines erfindungsgemässen Schleifgeräts;
  • Fig. 2 eine perspektivische Darstellung der Absaughaube im vormontierten Zustand;
  • In den Fig. 1 und 2 ist ein erfindungsgemässes Schleifgerät mit einem Gehäuse 1 und einer motorisch angetriebenen Antriebsspindel 2, an deren, das Gehäuse 1 überragenden, freien Ende 3 eine Werkzeugaufnahme 4 vorgesehen ist, dargestellt. An das Gehäuse 1 schliesst eine das freie Ende 3 der Antriebsspindel 2 umgebende, zur Werkzeugaufnahme 4 hin offe-Ende 3 eine Werkzeugaufnahme 4 vorgesehen ist, dargestellt. An das Gehäuse 1 schliesst eine das freie Ende 3 der Antriebsspindel 2 umgebende, zur Werkzeugaufnahme 4 hin offene, insgesamt mit 5 bezeichnete, Absaughaube an. Die Absaughaube 5 weist ein Oberteil 6 und ein daran anschliessendes, zur Werkzeugaufnahme 4 hin offenes Unterteil 7 auf.
    • The invention will be explained in more detail below with reference to an embodiment. Show it:
  • 1 shows a perspective view of a grinding device according to the invention;
  • FIG. 2 is a perspective view of the exhaust hood in the preassembled state; FIG.
  • 1 and 2, an inventive grinding device with a housing 1 and a motor-driven drive spindle 2, on whose, the housing 1 superior, free end 3 a tool holder 4 is provided, is shown. To the housing 1 includes a free end 3 of the drive spindle 2 surrounding, the tool holder 4 out offe-end 3 a tool holder 4 is provided, shown. To the housing 1 encloses a the free end 3 of the drive spindle 2 surrounding, the tool holder 4 towards open, generally designated 5, suction hood. The suction hood 5 has an upper part 6 and an adjoining lower part 7, which is open toward the tool receptacle 4.

    • Das eine kegelstumpfförmige Aussenkontur 18 aufweisende Oberteil 6 ist um die Längsrichtung L der Antriebsspindel 2 verschwenkbar und in Längsrichtung L unverschieblich am Gehäuse 1 gelagert. An der Aussenkontur 18 weist ein sich nach Aussen erstreckenden Absaugstutzen 12 auf, durch den eine nicht dargestellte Unterdruckquelle mit dem durch die Absaughaube 5 gebildeten Innenraum verbindbar ist. An der in Längsrichtung L der Antriebsspindel 2 von der Werkzeugaufnahme 4 abgewandeten Seite weist das Oberteil 6 ein Halteteil 19 auf.The truncated conical outer contour 18 having top 6 is about the longitudinal direction L of the drive spindle 2 pivotable and non-displaceable in the longitudinal direction L on Housing 1 stored. On the outer contour 18 has an outwardly extending Exhaust nozzle 12, through which a vacuum source, not shown with the through Extraction hood 5 formed interior is connectable. At the longitudinal direction L of the drive spindle 2 side facing away from the tool holder 4, the upper part 6 a Holding part 19 on.

    Das, mit einer zylinderförmigen Mantelfläche 13 versehene, Unterteil 7 weist eine zum freien Ende 3 und quer zur Längsrichtung L der Antriebsspindel 2 offene Ausnehmung 8 auf. Die durch die Ausnehmung 8 aufgespannte Ebene bzw. Fläche entspricht dem 0,07-fachen der, durch das freie Ende 9 des Unterteils 7 umschlossenen, Absaugöffnung 10. Die durch die Ausnehmung 8 aufgespannte Ebene verläuft quer zur Längsrichtung L der Antriebsspindel 2. Ein, beispielsweise durch eine Schnappverbindung am Unterteil 7 befestigbares, Abdeckteil 11 ermöglicht ein Verschliessen der Ausnehmung 8 und dadurch eine maximale Absaugleistung. Ferner ist das Abdeckteil 11 im wesentlichen komplementär zur Ausnehmung 8 ausgebildet. Das Unterteil 7 weist am freien Ende einen Staubvorhang, beispielsweise einem sich in Längsrichtung L erstreckenden Borstenkranz 14, auf, der das freie Ende des Unterteils 7 berandet. Vorteilhafterweise ist der Borstenkranz 14 aus einem elastischen Material hergestellt. Die Absaughaube 5 weist ausserdem eine Absaughalterung 15 auf. Die eine verschwenkbare und axiale Lagerung des Oberteils 6 und des Unterteils 7 am Gehäuse 1 sicherstellt. Die Absaughalterung 15 weist einen kegelstumpfförmiges Käfigelement 16 auf, und ein an der in Längsrichtung L der Werkzeugaufnahme 4 abgewandten Seiten des Käfigelements 16 anschliessenden rohrförmig ausgebildetes Halteelementes 17 an, das mit dem Halteteil 19 des Oberteils 6 zusammenwirkt. Vorteilhafterweise schliesst das Unterteil 7 an die in Längsrichtung L der Werkzeugaufnahme 4 zugewandten Seite des Käfigelements 16 an und ist mit diesem einteilig ausgebildet. Dadurch ist das Unterteil 7 drehfest und in Längsrichtung L unverschieblich an der Absaughalterung 15 gelagert. Das mit Ausnehmungen 24 versehene Käfigelement 16 dient der Lagerung des Oberteils 6 und weist an der Aussenkontur dieselbe Steigung auf. The, provided with a cylindrical lateral surface 13, lower part 7 has a free End 3 and transversely to the longitudinal direction L of the drive spindle 2 open recess 8. The plane or surface spanned by the recess 8 corresponds to 0.07 times the enclosed by the free end 9 of the lower part 7, suction opening 10. The through the Recess 8 spanned plane extends transversely to the longitudinal direction L of the drive spindle. 2 A, for example, by a snap connection fastened to the lower part 7, cover 11 allows a closure of the recess 8 and thereby a maximum suction power. Furthermore, the cover 11 is formed substantially complementary to the recess 8. The lower part 7 has at the free end a dust curtain, for example a in the longitudinal direction L extending bristle rim 14, on, the free end of the lower part 7 bounded. Advantageously, the bristle rim 14 is made of an elastic material produced. The suction hood 5 also has an exhaust bracket 15. The one pivotable and axial mounting of the upper part 6 and the lower part 7 on the housing. 1 ensures. The suction holder 15 has a frustoconical cage element 16, and a side facing away from the longitudinal direction L of the tool holder 4 sides of the cage element 16 subsequent tubular-shaped holding element 17, which with the Holding part 19 of the upper part 6 cooperates. Advantageously, the lower part 7 adjoins the longitudinal direction L of the tool holder 4 facing side of the cage member 16th and is integrally formed with this. As a result, the lower part 7 is rotationally fixed and longitudinally L immovably mounted on the suction holder 15. The with recesses 24 provided cage element 16 serves to support the upper part 6 and has on the outer contour same slope up.

    Das Gehäuse 1 weist in Längsrichtung L am werkzeugseitig zugewandten Ende ein rohrförmig ausgebildetes, aus Gründen der Übersichtlichkeit nicht dargestelltes, Aufnahmeteil auf, das mit dem Halteelemente 17 zusammenwirkt. Durch eine an der Aussenkontur des Halteteils 19 des Oberteils 6 gelagerten Spannbefestigung 22 ist die gesamte Absaughaube, insbesondere das Oberteil 6, das Unterteil 7 und das Käfigelement 16 am Gehäuse 1 reibund/oder formschlüssig festlegbar. Die Spannbefestigung 22 weist beispielsweise einen Spannhebelmechanismus zum lösbaren Festlegen des Oberteils 6 und des Unterteils 7 am Gehäuse 1 auf.The housing 1 has a tubular shape in the longitudinal direction L on the end facing the tool trained, for reasons of clarity, not shown, receiving part, which cooperates with the holding elements 17. By a on the outer contour of the holding part 19 of the upper part 6 mounted clamping fixture 22 is the entire suction hood, in particular the upper part 6, the lower part 7 and the cage element 16 on the housing 1 Reibund / or lockable. The clamping attachment 22 has, for example, a Tensioning lever mechanism for releasably securing the upper part 6 and the lower part 7 am Housing 1 on.

    Das zylindersegmentförmig ausgebildete Abdeckteil 11 ist durch einen Verbindungssteg 21, insbesondere einem elastischen Verbindungssteg 21, mit dem Oberteil 6 verbunden. An seiner dem freien Ende zugewandten Stirnseite weist das Abdeckteil 11 einen Staubvorhang, beispielweise einen Borstenkranz 23 auf. In einer weiteren, nicht dargestellten Ausführungsform ist das Abdeckteil 11 rohrförmig ausgebildet und verschwenkbar am Unterteil 7 und/oder dem Käfigelement 16 gelagert. Durch ein Verschwenken des Abdeckteils 11 gegenüber dem Unterteil 7 ist die Ausnehmung 8 verschliessbar.The cylinder-segment-shaped cover member 11 is connected by a connecting web 21, in particular an elastic connecting web 21, connected to the upper part 6. At his the free end facing the cover 11 has a dust curtain, For example, a bristle rim 23. In a further, not shown embodiment the cover 11 is tubular and pivotable on the lower part. 7 and / or the cage element 16 stored. By pivoting the cover 11 against the lower part 7, the recess 8 is closed.

    Claims (7)

    1. Grinding tool with a housing (1) and a drive shaft (2), which is driven by a motor, and which, on its free end (3), has means, of taking up a tool, that project beyond the housing (1), and with a suction hood (5), which is open in the direction of the tool-uptake means (4), and which surrounds the free end (3) of the drive shaft (2), adjoining the housing (1), the grinding tool having an upper section (6) and an adjoining lower section (7) that is open in the direction of the tool uptake means (4), the lower section (7) being substantially supported, such that it can rotate on the housing (1), around the longitudinal axis (L) of the drive shaft (2) and having at least one opening (8) that is open towards the free end, whereby the optical plane spreading across the opening runs transversely in relation to the longitudinal direction (L) of the drive shaft (2) and corresponds to 0.02 to 0.1 times the suction opening (10) surrounded by the free end (9) of the lower section (7), and whereby the opening (8) can be closed by the cover (11), characterized in that the cover (11) is supported such that it can swivel in relation to the lower section (7).
    2. Grinding tool in accordance with claim 1, characterized in that the cover (11) is complementary to the opening (8).
    3. Grinding tool in accordance with claims 1 or 2, characterized in that a short pipe-connection, for a negative-pressure source, is provided on the upper section (6).
    4. Grinding tool in accordance with one of claims 1 to 3, characterized in that the cover (11) is born rigidly on the housing (1).
    5. Grinding tool in accordance with one of claims 1 to 3, characterized in that the cover (11) is supported on the upper section (6).
    6. Grinding tool in accordance with one of claims 1 to 5, characterized in that the lower section (7) can swivel, essentially around the longitudinal axis (L) of the drive shaft (2), in relation to the upper section.
    7. Grinding tool in accordance with one of claims 1 to 6, characterized in that the upper section (6) can swivel, essentially around the longitudinal axis (L) of the drive shaft (2), in relation to the housing.
    EP02406077A 2001-12-20 2002-12-09 Grinding tool with suction hood Expired - Lifetime EP1321228B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DK02406077T DK1321228T3 (en) 2001-12-20 2002-12-09 Grinding device with extractor hood

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10162632A DE10162632A1 (en) 2001-12-20 2001-12-20 Grinder with suction hood
    DE10162632 2001-12-20

    Publications (2)

    Publication Number Publication Date
    EP1321228A1 EP1321228A1 (en) 2003-06-25
    EP1321228B1 true EP1321228B1 (en) 2005-06-08

    Family

    ID=7709946

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02406077A Expired - Lifetime EP1321228B1 (en) 2001-12-20 2002-12-09 Grinding tool with suction hood

    Country Status (8)

    Country Link
    US (1) US6896605B2 (en)
    EP (1) EP1321228B1 (en)
    AT (1) ATE297289T1 (en)
    DE (2) DE10162632A1 (en)
    DK (1) DK1321228T3 (en)
    ES (1) ES2243684T3 (en)
    HU (1) HU226840B1 (en)
    PL (1) PL203129B1 (en)

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    US8702478B2 (en) * 2009-05-08 2014-04-22 Michael Loveless Angle grinder dust shroud with unitary adjustable mounting collar
    US8523637B2 (en) * 2009-07-21 2013-09-03 Dustless Depot, Llc Angle grinder dust shroud with slideable access hatch
    US8561512B2 (en) * 2009-08-18 2013-10-22 Dustless Depot Llc Cutoff saw and stand with integrated dust filtration system
    JP5323624B2 (en) * 2009-09-14 2013-10-23 株式会社マキタ Dust collector cover for disc grinder
    JP2012213820A (en) * 2011-03-31 2012-11-08 Makita Corp Power tool
    US9038275B2 (en) 2011-09-07 2015-05-26 Dustless Depot, Llc Reciprocating saw dust shroud
    CN103386642B (en) * 2012-05-09 2015-09-23 海峰机械工业股份有限公司 Dust collection type grinder
    JP5998331B2 (en) * 2012-07-31 2016-09-28 極東産機株式会社 Putty grinding tool for interior construction
    WO2016003876A1 (en) 2014-07-03 2016-01-07 Oklahoma Medical Research Foundation Treatment of multiple sclerosis and neuromyelitis optica
    USD803916S1 (en) 2016-07-14 2017-11-28 Alfred Kaercher Gmbh & Co. Kg Drilling dust collector
    USD818788S1 (en) 2016-07-14 2018-05-29 Alfred Kaercher Gmbh & Co. Kg Device for collecting drilling dust
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    USD908149S1 (en) 2018-10-23 2021-01-19 Dustless Depot Llc Angle grinder dust shroud with variable position slots for mounting brackets
    US11123839B2 (en) 2018-10-23 2021-09-21 Dustless Depot Llc Grinder dust shroud with input shaft gasket and adjustable mounting mechanism
    US11273505B2 (en) 2019-03-27 2022-03-15 Dustless Depot, Llc Circular saw dust collection shroud
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    Also Published As

    Publication number Publication date
    EP1321228A1 (en) 2003-06-25
    PL203129B1 (en) 2009-08-31
    PL357897A1 (en) 2003-06-30
    ATE297289T1 (en) 2005-06-15
    DE50203327D1 (en) 2005-07-14
    HU226840B1 (en) 2009-12-28
    ES2243684T3 (en) 2005-12-01
    HU0204441D0 (en) 2003-02-28
    HUP0204441A3 (en) 2004-03-29
    US20030119435A1 (en) 2003-06-26
    HUP0204441A2 (en) 2003-09-29
    DK1321228T3 (en) 2005-10-03
    US6896605B2 (en) 2005-05-24
    DE10162632A1 (en) 2003-07-03

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