EP1321230A1 - Grinding device with suction hood - Google Patents

Grinding device with suction hood Download PDF

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Publication number
EP1321230A1
EP1321230A1 EP02406075A EP02406075A EP1321230A1 EP 1321230 A1 EP1321230 A1 EP 1321230A1 EP 02406075 A EP02406075 A EP 02406075A EP 02406075 A EP02406075 A EP 02406075A EP 1321230 A1 EP1321230 A1 EP 1321230A1
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EP
European Patent Office
Prior art keywords
guide elements
grinding device
drive spindle
suction hood
angle
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.)
Granted
Application number
EP02406075A
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German (de)
French (fr)
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EP1321230B1 (en
Inventor
Josef Nussbaumer
Oliver Ohlendorf
Georg Holzmeier
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Hilti AG
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Hilti AG
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Publication of EP1321230A1 publication Critical patent/EP1321230A1/en
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Publication of EP1321230B1 publication Critical patent/EP1321230B1/en
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    • 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 grinder with a housing and one in a working direction motor-driven drive spindle, on its free, projecting over the housing End a tool holder for a tool is provided and to the housing, a the free end of the drive spindle surrounding the suction hood connects to the tool holder is open towards, the suction hood at the open end, one has at least a part of the circumference extending dust curtain, which with several extending substantially parallel to the longitudinal direction of the drive spindle Guide elements is provided.
  • Grinding devices of the type mentioned above have a suction hood for dust extraction for example dust particles.
  • a suction hood for dust extraction for example dust particles.
  • vacuum source creates a vacuum.
  • the vacuum ensures that by a tool from particles separated from a surface can be removed from a work area. Thereby pollution of an environment by the particles, in particular dust particles, is prevented.
  • From CH 681 776 is a grinder with a housing and one in one working direction motor-driven drive spindle known. On the free, the housing protruding end this has a tool holder for releasably fixing a Tool on.
  • a housing which surrounds the free end of the work spindle, is connected to the housing.
  • Suction hood which is open for the tool holder. At the open end the suction hood has a dust curtain formed by bristles or lamellae.
  • a disadvantage of the known solution is that the suction power, especially in the margins rich of the suction hood, is insufficient.
  • the present invention has for its object a grinding device with a dust curtain to create an optimal suction performance, especially in the open edge area the suction hood ensures.
  • the object is achieved in that the guide elements are transverse to the longitudinal direction the drive spindle has a cross section with a greater longitudinal extent than that have a transverse extension extending transversely thereto.
  • a control is due to the fact that the several guide elements, which extend in the longitudinal direction of the drive spindle, have a greater longitudinal extension than a wider extension the air flow in the open edge area of the suction hood is ensured.
  • the dimensions and arrangement of the guide elements ensure an optimal flow.
  • the longitudinal extension of the guide elements is preferably inclined relative to the circumferential direction by an angle of inclination in the working direction of rotation in order to ensure an alignment of the guide element which is matched to the working direction of rotation of the work spindle.
  • This means that the longitudinal extension of the guide elements is inclined by the angle of inclination with respect to a tangent in the point of contact with the outer circumference.
  • the guiding elements aligned in this way prevent vortex formation, in particular in the edge region of the open suction hood, and thus an undesirable reduction in the suction power.
  • the angle of inclination is advantageously between 5 ° to 25 ° in order to ensure an optimal alignment of the guide elements.
  • Adjacent guide elements preferably overlap in the radial projection area of the Drive spindle at least partially.
  • the overlap ensures a vortex-free guidance the air flow in a transition area between the environment of the grinder and the vacuumable interior in the exhaust hood.
  • the end region of the longitudinal extension of the cross section facing the drive spindle the guide elements is preferably around in relation to the remaining area of the cross section an angle of curvature angled in the direction of rotation to create a vortex in the interior to prevent the suction hood, the angle of curvature advantageously between 15 ° to 45 °, optionally 23 °.
  • the guide elements can preferably be fastened to the suction hood by a support element, wherein the guide elements and the support element are advantageously formed in one piece are.
  • the guide element is preferably made of an elastic material in order to Tumbling movement of the grinder against damage to a surface to be machined to prevent the guiding elements.
  • the 1 to 3 is a grinder with a housing 1 and one in a working direction A represented by a motor M driven spindle 2.
  • a tool holder 4 On that Free end 3 of the drive spindle 2 projecting from the housing 1 is a tool holder 4 provided that at the free end 3 of a connecting to the housing 1 suction hood 5 is included.
  • the suction hood 5 is open towards the tool holder 4.
  • the dust curtain 7 has several in the longitudinal direction L of the drive spindle 2 extending guide elements 8.
  • the guide elements 8 point transversely to the longitudinal direction L of the drive spindle 2, for example an essentially quadrangular cross-section, with a larger longitudinal extension a than the transverse extension b.
  • the longitudinal extension a advantageously corresponds about 17 times the width extension b.
  • the guiding elements are opposite the circumferential direction by an angle of inclination ⁇ of about 18 ° inclined in the working direction A. This means that the longitudinal extension a of the guide elements 8 compared to a tagente t is inclined at the point of contact p with the outer circumference by the angle of inclination ⁇ .
  • Adjacent guide elements 8 partially overlap in the radial projection area of the drive spindle 2 in one Overlap angle Y of about 5 ° in the working direction A.
  • Adjacent guide elements (8) by 0.2 to 0.7 times their longitudinal extent a.
  • annular support member 10 is provided, for example in one piece with the guide elements 8 is formed.
  • the support member 10 is preferably by a fastener a snap device 11, releasably connectable to the housing 1.
  • Both the support element 10 and the guide elements 8 are made of an elastic material, for example Rubber, manufactured.
  • the snap device 11 has a hook-shaped tongue 12 with a hook element 13 and one arranged on the housing 1 engages with the hook element 13 bringable recess.
  • the suction hood 5 has a connection for connecting a vacuum source, not shown Suction nozzle 14, for example by means of a suction hose with the vacuum source is connectable.

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)

Abstract

The grinding apparatus has a casing (1) and a drive spindle (2) rotated in working direction (A) by a motor (M). There is a tool receiver (4) on the free end (3) of the spindle. At the open end (6), the hood (5) has a dust curtain (7) with several guide elements (8), of which those transverse to the drive spindle have a cross section of greater length than width.

Description

Die Erfindung betrifft ein Schleifgerät mit einem Gehäuse und einer in eine Arbeitsdrehrichtung motorisch angetriebenen Antriebsspindel, an deren, das Gehäuse überragenden, freien Ende eine Werkzeugaufnahme für ein Werkzeug vorgesehen ist und an das Gehäuse, eine das freie Ende der Antriebsspindel umgebende, Absaughaube anschliesst, die zur Werkzeugaufnahme hin offen ausgebildet ist, wobei die Absaughaube am offenen Ende, einen sich zumindest über einen Teil des Umfanges erstreckenden Staubvorhang aufweist, der mit mehreren sich im wesentlichen parallel zur Längsrichtung der Antriebsspindel erstreckenden Leitelementen versehen ist.The invention relates to a grinder with a housing and one in a working direction motor-driven drive spindle, on its free, projecting over the housing End a tool holder for a tool is provided and to the housing, a the free end of the drive spindle surrounding the suction hood connects to the tool holder is open towards, the suction hood at the open end, one has at least a part of the circumference extending dust curtain, which with several extending substantially parallel to the longitudinal direction of the drive spindle Guide elements is provided.

Schleifgeräte der oben genannten Art weisen eine Absaughaube zur Staubabsaugung von beispielsweise Staubpartikel auf. In der Absaughaube wird beispielsweise mittels einer, durch einen Absaugkanal mit dem Innenraum der Absaughaube verbundenen, Unterdruckquelle ein Vakuum erzeugt. Das Vakuum gewährleistet, dass die durch ein Werkzeug von einer Oberfläche abgetrennten Partikel, aus einem Arbeitsbereich entfernt werden. Dadurch wird eine Belastung einer Umgebung durch die Partikel, insbesondere Staubpartikel verhindert.Grinding devices of the type mentioned above have a suction hood for dust extraction for example dust particles. In the exhaust hood, for example, through a suction channel connected to the interior of the suction hood, vacuum source creates a vacuum. The vacuum ensures that by a tool from particles separated from a surface can be removed from a work area. Thereby pollution of an environment by the particles, in particular dust particles, is prevented.

Aus der CH 681 776 ist ein Schleifgerät mit einem Gehäuse und einer in eine Arbeitsdrehrichtung motorisch angetriebenen Antriebsspindel bekannt. An dem freien, das Gehäuse überragenden Ende weist diese eine Werkzeugaufnahme zum lösbaren Festlegen eines Werkzeuges auf. An das Gehäuse schliesst eine, das freie Ende der Arbeitsspindel umgebende, Absaughaube an, die zur Werkzeugaufnahme offen ausgebildet ist. Am offene Ende weist die Absaughaube einen durch Borsten oder Lamellen gebildeten Staubvorhang auf. Nachteilig an der bekannten Lösung ist, dass die Absaugleistung, insbesondere im Rande reich der Absaughaube, unzureichend ist. From CH 681 776 is a grinder with a housing and one in one working direction motor-driven drive spindle known. On the free, the housing protruding end this has a tool holder for releasably fixing a Tool on. A housing, which surrounds the free end of the work spindle, is connected to the housing. Suction hood, which is open for the tool holder. At the open end the suction hood has a dust curtain formed by bristles or lamellae. A disadvantage of the known solution is that the suction power, especially in the margins rich of the suction hood, is insufficient.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Schleifgerät mit einem Staubvorhang zu schaffen, das eine optimale Absaugleistung, insbesondere im offenen Randbereich der Absaughaube sicherstellt.The present invention has for its object a grinding device with a dust curtain to create an optimal suction performance, especially in the open edge area the suction hood ensures.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die Leitelemente quer zur Längsrichtung der Antriebsspindel einen Querschnitt, mit einer grösseren Längserstreckung als die quer dazu verlaufende Breiterstreckung aufweisen.According to the invention, the object is achieved in that the guide elements are transverse to the longitudinal direction the drive spindle has a cross section with a greater longitudinal extent than that have a transverse extension extending transversely thereto.

Dadurch, dass die, mehreren sich in Längsrichtung der Antriebsspindel erstreckenden, Leitelemente eine grössere Längserstreckung als Breiterstreckung aufweisen, ist eine Steuerung
der Luftströmung im offenen Randbereich der Absaughaube sichergestellt. Die Leitelemente gewährleisten durch ihre Dimensionierung und Anordnung einen optimalen Strömungsverlauf.A control is due to the fact that the several guide elements, which extend in the longitudinal direction of the drive spindle, have a greater longitudinal extension than a wider extension
the air flow in the open edge area of the suction hood is ensured. The dimensions and arrangement of the guide elements ensure an optimal flow.

Die Längserstreckung der Leitelemente ist vorzugsweise gegenüber der Umfangsrichtung um einen Neigungswinkel in Arbeitsdrehrichtung geneigt, um eine auf die Arbeitsdrehrichtung der Arbeitsspindel abgestimmte Ausrichtung der Leitelement zu gewährleisten. Das heisst, dass die Längserstreckung der Leitelemente gegenüber einer Tangente im Berührungspunkt mit dem Aussenumfang um dem Neigungswinkel geneigt sind. Die derart ausgerichteten Leitelemente verhindern, insbesondere im Randbereich der offenen Absaughaube eine Wirbelbildung und somit eine unerwünschte Verminderung der Absaugleistung.
Der Neigungswinkel beträgt vorteilhafterweise zwischen 5° bis 25°, um eine optimale Ausrichtung der Leitelemente sicherzustellen.The longitudinal extension of the guide elements is preferably inclined relative to the circumferential direction by an angle of inclination in the working direction of rotation in order to ensure an alignment of the guide element which is matched to the working direction of rotation of the work spindle. This means that the longitudinal extension of the guide elements is inclined by the angle of inclination with respect to a tangent in the point of contact with the outer circumference. The guiding elements aligned in this way prevent vortex formation, in particular in the edge region of the open suction hood, and thus an undesirable reduction in the suction power.
The angle of inclination is advantageously between 5 ° to 25 ° in order to ensure an optimal alignment of the guide elements.

Benachbarte Leitelemente überlappen sich vorzugsweise im radialen Projektionsbereich der Antriebsspindel zumindest teilweise. Die Überlappung gewährleistet eine wirbelfreie Führung des Luftstroms in einem Übergangsbereich zwischen der Umgebung des Schleifgeräts und dem vakuumierbaren Innenraum in der Absaughaube. Vorteilhafterweise überlappen sich benachbarte Leitelemente um das 0,2- bis 0,7-fachen ihrer Längserstreckung.Adjacent guide elements preferably overlap in the radial projection area of the Drive spindle at least partially. The overlap ensures a vortex-free guidance the air flow in a transition area between the environment of the grinder and the vacuumable interior in the exhaust hood. Advantageously overlap Adjacent guide elements by 0.2 to 0.7 times their longitudinal extent.

Der, der Antriebsspindel zugewandte, Endbereich der Längserstreckung des Querschnitts der Leitelemente ist vorzugsweise gegenüber dem übrigen Bereich des Querschnitts um einen Krümmungswinkel in Arbeitsdrehrichtung abgewinkelt, um eine Wirbelbildung im Innenraum der Absaughaube zu verhindern, wobei der Krümmungswinkel vorteilhafterweise zwischen 15° bis 45°, optional 23°, beträgt. The end region of the longitudinal extension of the cross section facing the drive spindle the guide elements is preferably around in relation to the remaining area of the cross section an angle of curvature angled in the direction of rotation to create a vortex in the interior to prevent the suction hood, the angle of curvature advantageously between 15 ° to 45 °, optionally 23 °.

Die Leitelemente sind vorzugsweise durch ein Tragelement an der Absaughaube befestigbar, wobei die Leitelemente und das Tragelement vorteilhafterweise einteilig ausgebildet sind.The guide elements can preferably be fastened to the suction hood by a support element, wherein the guide elements and the support element are advantageously formed in one piece are.

Vorzugsweise sind die Leitelement aus einem elastischen Material hergestellt, um bei einer Taumelbewegung des Schleifgeräts gegenüber einer zu bearbeitenden Oberfläche eine Beschädigung der Leitelemente zu verhindern.The guide element is preferably made of an elastic material in order to Tumbling movement of the grinder against damage to a surface to be machined to prevent the guiding elements.

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

Fig. 1
eine teilweise Seitenansicht des erfindungsgemässen Schleifgeräts;
Fig. 2
eine perspektivische Ansicht des in Fig. 1 dargestellten Staubvorhangs;
Fig. 3
einen quer zur Antriebsspindel verlaufenden Querschnitt des in Fig. 2 dargestellten Staubvorhangs gemäss der Ebene III-II in Fig. 1;
The invention is explained in more detail below using an exemplary embodiment. Show it:
Fig. 1
a partial side view of the grinding device according to the invention;
Fig. 2
a perspective view of the dust curtain shown in Fig. 1;
Fig. 3
a cross-section to the drive spindle of the dust curtain shown in Figure 2 according to the plane III-II in Fig. 1.

In den Fig. 1 bis 3 ist ein Schleifgerät mit einem Gehäuse 1 und einer in eine Arbeitsdrehrichtung A von einem Motor M angetriebenen Antriebsspindel 2 dargestellt. An dem, das Gehäuse 1 überragenden, freien Ende 3 der Antriebsspindel 2 ist eine Werkzeugaufnahme 4 vorgesehen, die am freien Ende 3 von einem an das Gehäuse 1 anschliessenden Absaughaube 5 umfasst ist. Die Absaughaube 5 ist zur Werkzeugaufnahme 4 hin offen ausgebildet. Wobei die Absaughaube 5 am offenen Ende 6, einen sich zumindest über einen Teil des Umfanges erstreckenden Staubvorhang 7 aufweist. Der Staubvorhang 7 weist mehreren sich in Längsrichtung L der Antriebsspindel 2 erstreckenden Leitelemente 8 auf.1 to 3 is a grinder with a housing 1 and one in a working direction A represented by a motor M driven spindle 2. On that Free end 3 of the drive spindle 2 projecting from the housing 1 is a tool holder 4 provided that at the free end 3 of a connecting to the housing 1 suction hood 5 is included. The suction hood 5 is open towards the tool holder 4. The suction hood 5 at the open end 6, at least over part of the Has circumferentially extending dust curtain 7. The dust curtain 7 has several in the longitudinal direction L of the drive spindle 2 extending guide elements 8.

Die Leitelemente 8 weisen quer zur Längsrichtung L der Antriebsspindel 2 beispielsweise einen im wesentlichen viereckigen Querschnitt auf, mit einer grösseren Längserstreckung a als die quer dazu verlaufende Breiterstreckung b. Die Längserstreckung a entspricht vorteilhafterweise etwa dem 17-fachen der Breiterstreckung b. Die Leitelemente sind gegenüber der Umfangsrichtung um einen Neigungswinkel α von etwa 18° in Arbeitsdrehrichtung A geneigt. Das heisst, dass die Längserstreckung a der Leitelemente 8 gegenüber einer Tagente t im Berührungspunkt p mit dem Aussenumfang um den Neigungswinkel α geneigt ist. Der, der Antriebsspindel 2 zugewandte, Endbereich 9 des Querschnitts der Leitelemente 8 ist gegenüber dem übrigen Bereich des Querschnitts um einen Krümmungswinkel β in Arbeitsdrehrichtung A vorzugsweise um etwa 23° abgewinkelt. Benachbarte Leitelemente 8 überlappen sich teilweise im radialen Projektionsbereich der Antriebsspindel 2 in einem Überlappungswinkel Y von etwa 5° in Arbeitsrichtung A. Vorteilhafterweise überlappen sich benachbarte Leitelemente (8) um das 0,2- bis 0,7-fachen ihrer Längserstreckung a. Um die Leitelemente 8 an der Absaughaube 5 festzulegen, ist zwischen der Absaughaube 5 ein kreisringförmiges Tragelement 10 vorgesehen, das beispielsweise einteilig mit den Leitelementen 8 ausgebildet ist. Das Tragelement 10 ist durch ein Befestigungsmittel, vorzugsweise einer Schnappvorrichtung 11, lösbar mit dem Gehäuse 1 verbindbar. Sowohl das Tragelement 10 als auch die Leitelemente 8 sind aus einem elastischen Material, beispielsweise Gummi, hergestellt.The guide elements 8 point transversely to the longitudinal direction L of the drive spindle 2, for example an essentially quadrangular cross-section, with a larger longitudinal extension a than the transverse extension b. The longitudinal extension a advantageously corresponds about 17 times the width extension b. The guiding elements are opposite the circumferential direction by an angle of inclination α of about 18 ° inclined in the working direction A. This means that the longitudinal extension a of the guide elements 8 compared to a tagente t is inclined at the point of contact p with the outer circumference by the angle of inclination α. The, End portion 9 of the cross section of guide elements 8 facing drive spindle 2 compared to the rest of the cross-section by an angle of curvature β in the working direction A preferably angled by about 23 °. Adjacent guide elements 8 partially overlap in the radial projection area of the drive spindle 2 in one Overlap angle Y of about 5 ° in the working direction A. Advantageously, they overlap Adjacent guide elements (8) by 0.2 to 0.7 times their longitudinal extent a. To the Define guide elements 8 on the suction hood 5 is between the suction hood 5 annular support member 10 is provided, for example in one piece with the guide elements 8 is formed. The support member 10 is preferably by a fastener a snap device 11, releasably connectable to the housing 1. Both the support element 10 and the guide elements 8 are made of an elastic material, for example Rubber, manufactured.

Die Schnappvorrichtung 11 weist eine hakenförmig ausgebildete Zunge 12 mit einem Hakenelement 13 und eine am Gehäuse 1 angeordnete mit dem Hakenelement 13 in Eingriff bringbare Ausnehmung auf.The snap device 11 has a hook-shaped tongue 12 with a hook element 13 and one arranged on the housing 1 engages with the hook element 13 bringable recess.

Zum Anschluss einer nicht dargestellten Unterdruckquelle weist die Absaughaube 5 einen Absaugstutzen 14 auf, der beispielsweise mittels eines Absaugschlauchs mit der Unterdruckquelle verbindbar ist.The suction hood 5 has a connection for connecting a vacuum source, not shown Suction nozzle 14, for example by means of a suction hose with the vacuum source is connectable.

Claims (10)

1. Schleifgerät mit einem Gehäuse (1 ) und einer in eine Arbeitsdrehrichtung (A) motorisch angetriebenen Antriebsspindel (2), an deren, das Gehäuse (1 ) überragenden, freien Ende (3) eine Werkzeugaufnahme (4) für ein Werkzeug vorgesehen ist und an das Gehäuse (1 ), eine das freie Ende (3) der Antriebsspindel (2) umgebende, Absaughaube (5) anschliesst, die zur Werkzeugaufnahme (4) hin offen ausgebildet ist, wobei die Absaughaube (5) am offenen Ende (6), einen sich zumindest über einen Teil des Umfanges erstrekkenden Staubvorhang (7) aufweist, der mit mehreren sich im wesentlichen parallel zur Längsrichtung (L) der Antriebsspindel (2) erstreckenden Leitelementen (8) versehen ist,
   dadurch gekennzeichnet, dass die Leitelemente (8) quer zur Längsrichtung (L) der Antriebsspindel (2) einen Querschnitt, mit einer grösseren Längserstreckung (a) als die quer dazu verlaufende Breiterstreckung (b) aufweisen. 1. Grinding device with a housing (1) and a drive spindle (2) which is motor-driven in a working direction of rotation (A), at whose, the housing (1) projecting, free end (3) a tool holder (4) for a tool is provided and Connects to the housing (1), a suction hood (5) surrounding the free end (3) of the drive spindle (2), which is open towards the tool holder (4), the suction hood (5) at the open end (6) has a dust curtain (7) which extends at least over part of the circumference and which is provided with a plurality of guide elements (8) which extend substantially parallel to the longitudinal direction (L) of the drive spindle (2),
characterized in that the guide elements (8) have a cross section transverse to the longitudinal direction (L) of the drive spindle (2), with a greater longitudinal extent (a) than the width extension (b) extending transversely thereto. 1. Schleifgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Längserstreckung (a) der Leitelemente (8) gegenüber der Umfangsrichtung um einen Neigungswinkel (α) in Arbeitsdrehrichtung (A) geneigt ist. 1. Grinding device according to claim 1, characterized in that the longitudinal extent (a) of the guide elements (8) is inclined relative to the circumferential direction by an angle of inclination (α) in the working direction of rotation (A). 3. Schleifgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Neigungswinkel (α) zwischen 5° bis 25° beträgt. 3. Grinding device according to claim 2, characterized in that the angle of inclination (α) is between 5 ° to 25 °. 4. Schleifgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sich benachbarte Leitelemente (8) im radialen Projektionsbereich der Antriebsspindel (2) zumindest teilweise überlappen. 4. Grinding device according to one of claims 1 to 3, characterized in that adjacent guide elements (8) at least partially overlap in the radial projection area of the drive spindle (2). 5. Schleifgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet) dass benachbarte Leitelemente (8) sich um das 0,2- bis 0,7-fachen ihrer Längserstreckung (a) überlappen. 5. Grinding device according to one of claims 1 to 4, characterized ) that adjacent guide elements (8) overlap by 0.2 to 0.7 times their longitudinal extent (a). 6. Schleifgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der, der Antriebsspindel (2) zugewandte, Endbereich der Längserstreckung (a) des Querschnitts der Leitelemente (8) gegenüber dem übrigen Bereich des Querschnitts um einen Krümmungswinkel (β) in Arbeitsdrehrichtung (A) abgewinkelt ist. 6. Grinding machine according to one of claims 1 to 5, characterized in that the, the drive spindle (2) facing, end region of the longitudinal extent (a) of the cross section of the guide elements (8) compared to the rest of the cross section by a curvature angle (β) in Working direction (A) is angled. 7. Schleifgerät nach Anspruch 6, dadurch gekennzeichnet, dass der Krümmungswinkel (β) zwischen 15° bis 45° beträgt. 7. Grinding device according to claim 6, characterized in that the angle of curvature (β) is between 15 ° to 45 °. 8. Schleifgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Leitelemente (8) durch ein Tragelement (10) an der Absaughaube (5) befestigbar sind. 8. Grinding device according to one of claims 1 to 7, characterized in that the guide elements (8) by a supporting element (10) on the suction hood (5) can be fastened. 9. Schleifgerät nach Anspruch 8, dadurch gekennzeichnet, dass die Leitelemente (8) und das Tragelement (10) einteilig ausgebildet sind. 9. Grinding device according to claim 8, characterized in that the guide elements (8) and the support element (10) are integrally formed. 10. Schleifgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Leitelement (8) aus einem elastischen Material hergestellt sind. 10. Grinding device according to one of claims 1 to 9, characterized in that the guide element (8) are made of an elastic material.
EP02406075A 2001-12-20 2002-12-09 Grinding device with suction hood Expired - Lifetime EP1321230B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10162631 2001-12-20
DE10162631A DE10162631A1 (en) 2001-12-20 2001-12-20 Grinder with suction hood

Publications (2)

Publication Number Publication Date
EP1321230A1 true EP1321230A1 (en) 2003-06-25
EP1321230B1 EP1321230B1 (en) 2011-06-15

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EP02406075A Expired - Lifetime EP1321230B1 (en) 2001-12-20 2002-12-09 Grinding device with suction hood

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EP (1) EP1321230B1 (en)
AT (1) ATE512763T1 (en)
DE (1) DE10162631A1 (en)
PL (1) PL202773B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008088926A1 (en) * 2007-01-12 2008-07-24 I.T., Inc. Hood plates for handheld grinding tools
EP3705229A1 (en) * 2019-03-04 2020-09-09 Hilti Aktiengesellschaft Dust hood extension device and system comprising such a dust hood extension device and an adapter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099328A (en) 1977-07-20 1978-07-11 Schlemmer John E Machine for removing floor covering
CH681776A5 (en) 1990-04-23 1993-05-28 Heinz Baehni Electric floor cleaning and polishing machine - has floating ring with cleaning brush or lamella crown and suction hose connection for removing dust or water from floor surface.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099328A (en) 1977-07-20 1978-07-11 Schlemmer John E Machine for removing floor covering
CH681776A5 (en) 1990-04-23 1993-05-28 Heinz Baehni Electric floor cleaning and polishing machine - has floating ring with cleaning brush or lamella crown and suction hose connection for removing dust or water from floor surface.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008088926A1 (en) * 2007-01-12 2008-07-24 I.T., Inc. Hood plates for handheld grinding tools
US7625265B2 (en) 2007-01-12 2009-12-01 I.T., Inc. Hood plates for handheld grinding tools
EP3705229A1 (en) * 2019-03-04 2020-09-09 Hilti Aktiengesellschaft Dust hood extension device and system comprising such a dust hood extension device and an adapter
WO2020178072A1 (en) * 2019-03-04 2020-09-10 Hilti Aktiengesellschaft Dust hood extension device, system comprising such a dust hood extension device and an adapter

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PL202773B1 (en) 2009-07-31
DE10162631A1 (en) 2003-07-10
ATE512763T1 (en) 2011-07-15
PL357898A1 (en) 2003-06-30
EP1321230B1 (en) 2011-06-15

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