EP2123398A1 - Handheld tool for removing material from a workpiece or component surface - Google Patents

Handheld tool for removing material from a workpiece or component surface Download PDF

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Publication number
EP2123398A1
EP2123398A1 EP09159788A EP09159788A EP2123398A1 EP 2123398 A1 EP2123398 A1 EP 2123398A1 EP 09159788 A EP09159788 A EP 09159788A EP 09159788 A EP09159788 A EP 09159788A EP 2123398 A1 EP2123398 A1 EP 2123398A1
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EP
European Patent Office
Prior art keywords
support plate
hand tool
housing part
tool according
bristles
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
EP09159788A
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German (de)
French (fr)
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EP2123398B1 (en
Inventor
Gottfried Meister
Markus Holzmann
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Inotec GmbH Transport und Foerdersysteme
Inotec GmbH
Original Assignee
Inotec GmbH Transport und Foerdersysteme
Inotec GmbH
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Priority to PL09159788T priority Critical patent/PL2123398T3/en
Publication of EP2123398A1 publication Critical patent/EP2123398A1/en
Application granted granted Critical
Publication of EP2123398B1 publication Critical patent/EP2123398B1/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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating 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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/055—Protective covers for the grinding wheel specially designed for portable grinding machines with oscillating 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
    • 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 relates to a hand tool for material-removing machining of a workpiece or component surface having the features of the preamble of claim 1.
  • the invention relates to a hand tool for grinding surfaces.
  • the material removal on workpiece or component surfaces serves, for example, for removing coatings or smoothing surfaces.
  • grinding tools such as belt grinders, orbital sanders or eccentric grinders are used. They differ essentially with regard to the particular abrasive used and its movement relative to the workpiece or component surface.
  • the grinding tools usually have a support plate with which the abrasive can be releasably connected to be replaced after its wear.
  • this support plate In classic vibratory or eccentric grinders this support plate is designed as a flywheel, ie it is moved in operation of the device usually in circular paths.
  • the support plate can be designed both round and square.
  • a grinding machine with round support plate is used for example in the DE 38 05 962 A1 described. It has a driven by a drive shaft to a rotary grinding pad, which is also surrounded by a dust suction hood of a dust extraction.
  • the hood body of the dust suction hood ends above the sanding pad underside, wherein a projecting from the bottom of the hood body a bristle ring or the like projects, which runs along a part of the sanding pad circumference and should ensure that the sanding dust is sucked as completely as possible.
  • the bristle ring in a partial circumferential region of the sanding plate should therefore ensure a sealing of the suction gap.
  • the sanding pad has a retaining groove in a partial circumferential area into which the sealing body can be inserted in such a way that it can be inserted downwards, ie toward the workpiece surface, into the retaining groove.
  • a radially projecting annular wall region is designed as a sealing part.
  • This annular wall region and the peripheral boundary of the retaining groove represent the radially outermost regions of the grinding machine, which are to be kept far away from other surfaces when guiding the grinding machine over the workpiece surface to be machined in order to avoid their damage.
  • Object of the present invention is therefore to propose a hand tool for material-removing machining, which can be operated as possible without the risk of damage to adjacent, that is not lying in the working plane workpiece or component surfaces.
  • the hand tool for material-removing machining of a workpiece or component surface with a drive unit and a processing unit which is drivable via the drive unit and which comprises a support plate and a connectable to the support plate processing means for removing the material, according to the invention by a on the support plate or a the support plate surrounding housing part arranged protective device comprising at least one brush element having bristles which are aligned substantially parallel and / or obliquely to the machined surface and the contour edge of the support plate or the support plate surrounding housing part for the protection of surfaces outside the surface to be machined, project in such a way that contact of the support plate or the housing part with such a surface is avoidable.
  • the use of at least one brush element has the advantage that the protective device has a certain flexibility. Like a spring arm, the individual bristles soften under a pressure load so that damage to adjacent surfaces is largely ruled out.
  • the bristles of the brush element for connection to the support plate or the housing part are held in a bar.
  • the replacement of the brush element when needed, for example, in case of wear or excessive contamination simplified.
  • worn abrasive particles can settle into the interstices of the bristles and lead to an adhesion of the bristles to one another, so that a sufficient functionality of the protective device is no longer present. If this is the case, the brush element can be removed and replaced with a new brush element.
  • various brush elements can be kept available, for example, bristles of different lengths, bristles of different materials or in different bristle density. The choice of the brush element can thus be tailored to the particular application.
  • the protective device also comprises at least one profile part, which at least partially surrounds and / or projects beyond the contour edge of the support plate or of the housing part for the protection of surfaces which lie outside the surface to be machined.
  • this profile part is preferably at least partially elastically deformable. In contact with adjacent surfaces thus also proves the profile part as yielding, so that damage to the adjacent surfaces are largely avoided.
  • the profile part may be straight, curved or formed, for example, as an outer corner. It may also be designed to be elastic to the extent that it can be inserted into a peripheral, forming an outer corner groove of the support plate or the housing part and around the outer corner as Ecksch around feasible.
  • the strip for receiving the bristles would have to be made elastic to the same extent, so that it can also be guided around the outer corner.
  • the distance between the bristles extending radially from the outer corner would increase so much that a sufficient corner protection would no longer be guaranteed.
  • the protective device for protecting adjacent surfaces therefore preferably consists of bristle elements along the straight edges and at least partially elastic profile parts in the region of the outer corners.
  • profile part made of polyurethane, in particular an at least slightly elastic polyurethane. At the same time elastic properties polyurethane has a high wear resistance in the rule.
  • the profile parts are preferably releasably connected to the support plate or the housing part as well as the brush elements.
  • plug, clamp, screw or snap connections are suitable as a connection.
  • the connection preferably takes place via the strip in which the bristles are held.
  • bores for receiving fastening screws can be provided in the strip.
  • the strip can be equipped with a latching nose for insertion into a corresponding recess of the support plate.
  • at least one recess for receiving the protective device is provided on the support plate or the housing part.
  • the recess may be arranged on the upper side of the support plate or of the housing part or on the respective peripheral side. Depending on the position and design of the recess, the protective element is thus inserted from above or pushed from the side. In a plug-in, clamping or locking connection additional fasteners, such as screws or pins are not required.
  • the recesses for receiving the strips of the brush elements or the profile parts are designed such that they are flush-mounted, so that edges on which abrasive particles or other contaminants could accumulate, can be avoided.
  • all the recesses are of the same size, so that with a corresponding design of the protective elements, these can be interchanged with one another and inserted into the recesses.
  • At least one further brush element is arranged on the support plate or a housing part surrounding the support plate, which has bristles which are aligned substantially perpendicular to the workpiece or component surface and bear against the workpiece or component surface during machining.
  • a trained hand tool thus has at least one substantially parallel and perpendicular to the workpiece or component surface aligned brush element.
  • both brush elements are combined in one component, for example, the respective bristles can be accommodated in a common strip.
  • a protective element not only adjacent workpiece or component surfaces are protected from damage, but also the workpiece or component surface to be machined.
  • the bristles directed perpendicular to the workpiece or component surface limit a suction region, which thereby additionally experiences a limitation.
  • the bristles prevent abrasive particles from being thrown out over the gap between the grinding machine and the workpiece or component surface.
  • it can also be provided to form a brush element with a sealing bead or a sealing lip aligned perpendicular to the workpiece or component surface.
  • a combination with vertical bristles can be chosen, since they can be guided around each other around the outer corner without changing the bristle spacings.
  • the support plate or the housing part of the hand tool can thus have a circumferential bristle rim with aligned perpendicular to the workpiece or component surface bristles, while the radially acting protection device is composed of brush elements and profile parts.
  • the hand tool according to the invention is a grinding machine, in particular an orbital sander, eccentric sander or a disc sander.
  • the support plate is rectangular or round. Since in a round Tragplattenaus Insert the formation of an outer corner is omitted, can be provided as a protective device, a circumferential bristle rim, which has bristles, which are aligned substantially parallel and / or obliquely machined surface.
  • vertically arranged bristles can be provided for better extraction, which support the functionality of a suction unit.
  • hand tool according to the invention has next the drive unit and the processing unit and a suction unit for discharging the removed material.
  • a circumferential opening is provided between the support plate and a housing part surrounding the support plate, which is connected to a suction unit.
  • the proposed protective device is arranged on the housing part, wherein brush elements of the protective device limit a Absauge Scheme, which ensures that the removed material is supplied through the peripheral opening of the suction unit.
  • One possible field of application of the hand tool according to the invention is, for example, the surface treatment of insulating boards. If these contain polystyrene or similar materials, there is the risk of electrical charging during machining.
  • a housing part of the hand tool according to the invention surrounding the support plate is preferably earthed.
  • FIG. 1 shows a perspective view of an orbital sander with a rectangular support plate 3, as part of a processing unit 2, which is movable by means of a drive unit 1 in circular paths.
  • the drive unit 1 has a connection for power supply to a connection or a connection cable for connection to a power grid.
  • at least one handle 12 is further provided.
  • the drive unit 1 and the processing unit 2 are in separate housing parts, which are connectable to each other.
  • the housing part 4 of the processing unit 2 has a rectangular plate whose base is larger than that of the support plate 3.
  • the housing part 4 thus peripherally projects beyond the support plate 3, or in other words, the contour edge 4.1 of the housing part 4 in front of the contour edge 3.1 of the support plate 3.
  • the contour edge 4.1 of the housing part 4 is the outer edge, which can lead to damage of the same upon contact with adjacent workpiece or component surfaces. Damage can be caused in particular by the exposed outer corners 13.
  • the longitudinal edges 14 and the outer corners 13 are provided with a protective device 5 which comprises at least one brush element 6.
  • the brush element 6 comes as a protective device 5 of the longitudinal edges 14 to bear.
  • the protective device 5 comprises a profile part 9, which surrounds the outer corners 13.
  • the formation of a brush element 6 as an outer corner would be difficult to produce, in particular the bristles 7 of the brush element 6 would have to be guided around the outer corner 13, which would extend radially outward from the outer corner 13 and the bristle spaces would be widened so that adequate protection would no longer be guaranteed.
  • the brush element 6 with bristles 7 aligned parallel to the support plate 3 is therefore designed as a linear element and covers the contour edge 4.1 of the housing part 4 along the longitudinal edges 14.
  • the bristles 7 are received in a bar 8, which are essentially flush in recesses 10 of the housing part 4 can be used.
  • the connection takes place here by means of fastening screws, which ensure a secure fit and are easy to replace again to replace the brush element 6.
  • the strip 8 and the recesses 10 have holes 15 for receiving the fastening screws.
  • the identical design of the recesses 10 including the holes 15 allows the insertion of any brush element 6, the strip 8 is formed substantially always the same.
  • the use of brush elements 6 is possible, in addition to parallel and / or obliquely to the machined workpiece or Component surface aligned bristles 7 also perpendicular thereto standing bristles 11.
  • the brush element 6 can be used in this way not only as a protective device 5 according to the invention, but also as the outer boundary of a suction.
  • the bristles 11 are preferably also included in the bar 8.
  • the individual recesses 10 for receiving the strips 8 of the brush elements 6 have intermediate webs 16 which can be safely covered by obliquely standing bristles on the respective strip ends. If adjacent brush elements 6 in the area of a web 16 do not touch by bristles that are at an angle, a remaining gap is adequately protected by resilient surrounding bristles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The tool has a machining device (2) driven by drive unit (1) and including a support plate (3). A protection device (5) is arranged at the plate or a housing part (4). The protection device has a profile part (9) that is made of polyurethane and brushes (6) that include bristles (7), which are aligned parallel and/or transverse to a surface to be machined. The profile part overlaps profiled edges (3.1, 4.1) of the plate or the housing part to protect surfaces that lie outside of the surface to be machined so that the plate or the housing part is not contacted with the surface to be machined.

Description

Die Erfindung betrifft ein Handwerkzeug zur materialabtragenden Bearbeitung einer Werkstück- oder Bauteiloberfläche mit den Merkmalen des Oberbegriffs des Anspruchs 1. Insbesondere betrifft die Erfindung ein Handwerkzeug zum Schleifen von Oberflächen.The invention relates to a hand tool for material-removing machining of a workpiece or component surface having the features of the preamble of claim 1. In particular, the invention relates to a hand tool for grinding surfaces.

Der Materialabtrag an Werkstück- oder Bauteiloberflächen dient beispielsweise dem Entfernen von Beschichtungen oder dem Glätten von Oberflächen. Hierbei finden unter anderem Schleifwerkzeuge, wie Bandschleifer, Schwingschleifer oder Exzenterschleifer Einsatz. Sie unterscheiden sich im Wesentlichen im Hinblick auf das jeweils eingesetzte Schleifmittel und dessen Bewegung gegenüber der Werkstück- bzw. Bauteiloberfläche. Zur Aufnahme des Schleifmittels weisen die Schleifwerkzeuge in der Regel eine Tragplatte auf, mit der das Schleifmittel lösbar verbunden werden kann, um nach dessen Abnutzung ausgetauscht zu werden.The material removal on workpiece or component surfaces serves, for example, for removing coatings or smoothing surfaces. Among other things, grinding tools such as belt grinders, orbital sanders or eccentric grinders are used. They differ essentially with regard to the particular abrasive used and its movement relative to the workpiece or component surface. For receiving the abrasive, the grinding tools usually have a support plate with which the abrasive can be releasably connected to be replaced after its wear.

Bei klassischen Schwing- oder Exzenterschleifern ist diese Tragplatte als Schwungplatte ausgebildet, d.h. sie wird im Betrieb des Gerätes in der Regel in Kreisbahnen bewegt. Die Tragplatte kann sowohl rund als auch eckig ausgeführt sein.In classic vibratory or eccentric grinders this support plate is designed as a flywheel, ie it is moved in operation of the device usually in circular paths. The support plate can be designed both round and square.

Eine Schleifmaschine mit runder Tragplatte wird beispielsweise in der DE 38 05 962 A1 beschrieben. Sie besitzt einen von einer Antriebswelle zu einer Rotationsbewegung angetriebenen Schleifteller, der zudem von einer Staubabsaughaube einer Staubabsaugeinrichtung umgeben ist. Dabei endet der Haubenkörper der Staubabsaughaube oberhalb der Schleiftellerunterseite, wobei von der Unterseite des Haubenkörpers ein auf das Werkstück aufsetzbarer Borstenkranz oder dergleichen absteht, der entlang eines Teiles des Schleiftellerumfangs verläuft und gewährleisten soll, dass der Schleifstaub möglichst vollständig abgesaugt wird. Der Borstenkranz in einem Teilumfangsbereich des Schleiftellers soll demnach eine Abdichtung des Ansaugspaltes gewährleisten. Anstelle eines Borstenkranzes soll auch ein Kranz von Kunststoffnoppen oder eine aus nachgiebigem Material bestehende Dichtlippe diese Funktion gewährleisten können. Zur Aufnahme eines entsprechenden Dichtkörpers weist der Schleifteller in einem Teilumfangsbereich eine Haltenut auf, in die der Dichtkörper derart einsetzbar ist, dass er nach unten hin, d. h. zur Werkstückoberfläche hin, in die Haltenut einsetzbar ist. In einem Teilumfangsbereich, der keinen Borstenkranz oder Dichtlippe zwecks Abdichtung eines Absaugspaltes trägt, ist ein radial vorstehender Ringwandbereich als Dichtpartie ausgebildet. Dieser Ringwandbereich sowie die umfangseitige Begrenzung der Haltenut stellen die jeweils radial weitest außen liegenden Bereiche der Schleifmaschine dar, die beim Führen der Schleifmaschine über die zu bearbeitende Werkstückoberfläche fern von anderen Oberflächen zu halten sind, um deren Beschädigung zu vermeiden. Gerade bei handgeführten Schleifmaschinen besteht jedoch die Gefahr, dass Oberflächen angrenzender Bauteile oder Werkstückkanten durch radial vorstehende Tragplatten - oder diese umgebende Schutzhaubenkanten - beschädigt werden.A grinding machine with round support plate is used for example in the DE 38 05 962 A1 described. It has a driven by a drive shaft to a rotary grinding pad, which is also surrounded by a dust suction hood of a dust extraction. In this case, the hood body of the dust suction hood ends above the sanding pad underside, wherein a projecting from the bottom of the hood body a bristle ring or the like projects, which runs along a part of the sanding pad circumference and should ensure that the sanding dust is sucked as completely as possible. The bristle ring in a partial circumferential region of the sanding plate should therefore ensure a sealing of the suction gap. Instead of a bristle ring, a ring of plastic knobs or a sealing lip made of flexible material should be able to guarantee this function. In order to receive a corresponding sealing body, the sanding pad has a retaining groove in a partial circumferential area into which the sealing body can be inserted in such a way that it can be inserted downwards, ie toward the workpiece surface, into the retaining groove. In a partial circumferential region which does not carry a bristle rim or sealing lip for the purpose of sealing a suction gap, a radially projecting annular wall region is designed as a sealing part. This annular wall region and the peripheral boundary of the retaining groove represent the radially outermost regions of the grinding machine, which are to be kept far away from other surfaces when guiding the grinding machine over the workpiece surface to be machined in order to avoid their damage. Especially with hand-held grinding machines, however, there is a risk that surfaces of adjacent components or workpiece edges by radially projecting support plates - or surrounding protective hood edges - are damaged.

Aufgabe der vorliegenden Erfindung ist es daher, ein Handwerkzeug zur materialabtragenden Bearbeitung vorzuschlagen, das möglichst ohne die Gefahr einer Beschädigung angrenzender, das heißt nicht in der Bearbeitungsebene liegender Werkstück- oder Bauteiloberflächen betrieben werden kann.Object of the present invention is therefore to propose a hand tool for material-removing machining, which can be operated as possible without the risk of damage to adjacent, that is not lying in the working plane workpiece or component surfaces.

Die Aufgabe wird gelöst durch ein Handwerkzeug mit den Merkmalen des Anspruchs 1. Bevorzugte Weiterbildungen werden in den Unteransprüchen beschrieben.The object is achieved by a hand tool with the features of claim 1. Preferred developments are described in the subclaims.

Das Handwerkzeug zur materialabtragenden Bearbeitung einer Werkstück- oder Bauteiloberfläche mit einer Antriebseinheit und einer Bearbeitungseinheit, die über die Antriebseinheit antreibbar ist und die eine Tragplatte sowie ein mit der Tragplatte verbindbares Bearbeitungsmittel zum Abtragen des Materials umfasst, zeichnet sich erfindungsgemäß durch eine an der Tragplatte oder einem die Tragplatte umgebenden Gehäuseteil angeordnete Schutzeinrichtung aus, die wenigstens ein Bürstenelement umfasst, das Borsten besitzt, die im Wesentlichen parallel und/oder schräg zur bearbeitenden Oberfläche ausgerichtet sind und die Umrisskante der Tragplatte oder des die Tragplatte umgebenden Gehäuseteils zum Schutz von Oberflächen, die außerhalb der zu bearbeitenden Oberfläche liegen, in der Weise überragen, dass ein Kontakt der Tragplatte oder des Gehäuseteils mit einer solchen Oberfläche vermeidbar ist. Der Einsatz wenigstens eines Bürstenelements besitzt den Vorteil, dass die Schutzeinrichtung eine gewisse Flexibilität aufweist. Gleich einem Federarm weichen die einzelnen Borsten bei einer Druckbelastung aus, so dass Beschädigungen angrenzender Oberflächen weitestgehend ausgeschlossen sind.The hand tool for material-removing machining of a workpiece or component surface with a drive unit and a processing unit, which is drivable via the drive unit and which comprises a support plate and a connectable to the support plate processing means for removing the material, according to the invention by a on the support plate or a the support plate surrounding housing part arranged protective device comprising at least one brush element having bristles which are aligned substantially parallel and / or obliquely to the machined surface and the contour edge of the support plate or the support plate surrounding housing part for the protection of surfaces outside the surface to be machined, project in such a way that contact of the support plate or the housing part with such a surface is avoidable. The use of at least one brush element has the advantage that the protective device has a certain flexibility. Like a spring arm, the individual bristles soften under a pressure load so that damage to adjacent surfaces is largely ruled out.

Vorzugsweise sind die Borsten des Bürstenelements zur Verbindung mit der Tragplatte oder dem Gehäuseteil in einer Leiste gehalten. Dadurch wird der Austausch des Bürstenelements bei Bedarf, beispielsweise bei Verschleiß oder bei zu starker Verschmutzung, vereinfacht. Abgetragene Schleifpartikel können zum Beispiel sich in die Zwischenräume der Borsten setzen und zu einer Verklebung der Borsten untereinander führen, so dass eine ausreichende Funktionsfähigkeit der Schutzeinrichtung nicht mehr gegeben ist. Sollte dies der Fall sein, kann das Bürstenelement abgenommen und gegen ein neues Bürstenelement ausgetauscht werden. Ferner können verschiedene Bürstenelemente vorgehalten werden, die beispielsweise unterschiedlich lange Borsten, Borsten aus verschiedenen Materialien oder in unterschiedlicher Borstendichte umfassen. Die Wahl des Bürstenelementes kann somit auf den jeweiligen Einsatzbereich abgestimmt werden.Preferably, the bristles of the brush element for connection to the support plate or the housing part are held in a bar. As a result, the replacement of the brush element when needed, for example, in case of wear or excessive contamination, simplified. For example, worn abrasive particles can settle into the interstices of the bristles and lead to an adhesion of the bristles to one another, so that a sufficient functionality of the protective device is no longer present. If this is the case, the brush element can be removed and replaced with a new brush element. Furthermore, various brush elements can be kept available, for example, bristles of different lengths, bristles of different materials or in different bristle density. The choice of the brush element can thus be tailored to the particular application.

Nach einer bevorzugten Ausführungsform umfasst die Schutzeinrichtung zudem wenigstens ein Profilteil, das die Umrisskante der Tragplatte oder des Gehäuseteils zum Schutz von Oberflächen, die außerhalb der zu bearbeitenden Oberfläche liegen, zumindest teilweise umgreift und/oder überragt. Weiterhin bevorzugt ist dieses Profilteil zumindest teilweise elastisch verformbar. Im Kontakt mit angrenzenden Oberflächen erweist sich somit auch das Profilteil als nachgiebig, so dass Beschädigungen der angrenzenden Oberflächen weitestgehend vermieden werden. Das Profilteil kann gerade, gebogen oder beispielsweise als Außenecke ausgebildet sein. Es kann ferner in dem Maße elastisch ausgeführt sein, dass es in eine umfangseitige, eine Außenecke bildende Nut der Tragplatte oder des Gehäuseteils einsetzbar und um die Außenecke als Eckschutz herumführbar ist. Wollte man einen solchen Eckschutz mittels eines Bürstenelements realisieren, müsste die Leiste zur Aufnahme der Borsten in gleichem Maße elastisch ausgeführt sein, so dass sie ebenfalls um die Außenecke herumführbar ist. Dabei würde jedoch der Abstand der sich von der Außenecke radial erstreckenden Borsten derart stark zunehmen, dass ein ausreichender Eckschutz nicht mehr gewährleistet wäre. Insbesondere bei rechteckigen Tragplatten eines Schleifwerkzeuges besteht die Schutzeinrichtung zum Schutz von angrenzenden Oberflächen daher bevorzugt aus Borstenelementen entlang der gerade geführten Kanten und zumindest teilweise elastischen Profilteilen im Bereich der Außenecken.According to a preferred embodiment, the protective device also comprises at least one profile part, which at least partially surrounds and / or projects beyond the contour edge of the support plate or of the housing part for the protection of surfaces which lie outside the surface to be machined. Furthermore, this profile part is preferably at least partially elastically deformable. In contact with adjacent surfaces thus also proves the profile part as yielding, so that damage to the adjacent surfaces are largely avoided. The profile part may be straight, curved or formed, for example, as an outer corner. It may also be designed to be elastic to the extent that it can be inserted into a peripheral, forming an outer corner groove of the support plate or the housing part and around the outer corner as Eckschutz around feasible. If one wanted to realize such a corner protection by means of a brush element, the strip for receiving the bristles would have to be made elastic to the same extent, so that it can also be guided around the outer corner. However, the distance between the bristles extending radially from the outer corner would increase so much that a sufficient corner protection would no longer be guaranteed. Particularly in the case of rectangular support plates of a grinding tool, the protective device for protecting adjacent surfaces therefore preferably consists of bristle elements along the straight edges and at least partially elastic profile parts in the region of the outer corners.

Weiterhin bevorzugte ist das Profilteil aus Polyurethan, insbesondere einem zumindest geringfügig elastischen Polyurethan hergestellt. Bei gleichzeitig elastischen Eigenschaften weist Polyurethan in der Regel auch eine hohe Verschleißfestigkeit auf.Further preferred is the profile part made of polyurethane, in particular an at least slightly elastic polyurethane. At the same time elastic properties polyurethane has a high wear resistance in the rule.

Die Profilteile sind wie auch die Bürstenelemente bevorzugt lösbar mit der Tragplatte oder dem Gehäuseteil verbunden. Als Verbindung eignen sich insbesondere Steck-, Klemm-, Schraub- oder Rastverbindungen. Bei den Bürstenelementen erfolgt die Verbindung bevorzugt über die Leiste, in der die Borsten gehalten sind. Hierzu können in der Leiste Bohrungen zur Aufnahme von Befestigungsschrauben vorgesehen sein. Alternativ oder ergänzend kann die Leiste mit einer Rastnase zum Einsetzen in eine entsprechende Ausnehmung der Tragplatte ausgestattet sein. Entsprechendes gilt für das insbesondere als Außenecke ausgebildete Profilteil. Nach einer bevorzugten Ausführungsform ist daher an der Tragplatte oder dem Gehäuseteil wenigstens eine Ausnehmung zur Aufnahme der Schutzeinrichtung vorgesehen. Die Ausnehmung kann auf der Oberseite der Tragplatte oder des Gehäuseteils oder an der jeweiligen Umfangseite angeordnet sein. Je nach Lage und Ausbildung der Ausnehmung wird das Schutzelement demnach von oben eingesetzt oder von der Seite eingeschoben. Bei einer Steck-, Klemm- oder Rastverbindung sind zusätzliche Befestigungsmittel, wie Schrauben oder Stifte nicht erforderlich. Vorzugsweise sind die Ausnehmungen zur Aufnahme der Leisten der Bürstenelemente oder der Profilteile derart ausgebildet, dass diese flächenbündig einsetzbar sind, so dass Kanten, an denen sich Schleifpartikel oder sonstige Verschmutzungen festsetzen könnten, vermieden werden. Vorteilhafterweise sind alle Ausnehmungen gleich groß ausgebildet, so dass bei entsprechender Ausbildung der Schutzelemente, diese beliebig untereinander austauschbar und in die Ausnehmungen einsetzbar sind.The profile parts are preferably releasably connected to the support plate or the housing part as well as the brush elements. In particular plug, clamp, screw or snap connections are suitable as a connection. In the case of the brush elements, the connection preferably takes place via the strip in which the bristles are held. For this purpose, bores for receiving fastening screws can be provided in the strip. Alternatively or additionally, the strip can be equipped with a latching nose for insertion into a corresponding recess of the support plate. The same applies to the particular formed as an outer corner profile part. According to a preferred embodiment, therefore, at least one recess for receiving the protective device is provided on the support plate or the housing part. The recess may be arranged on the upper side of the support plate or of the housing part or on the respective peripheral side. Depending on the position and design of the recess, the protective element is thus inserted from above or pushed from the side. In a plug-in, clamping or locking connection additional fasteners, such as screws or pins are not required. Preferably, the recesses for receiving the strips of the brush elements or the profile parts are designed such that they are flush-mounted, so that edges on which abrasive particles or other contaminants could accumulate, can be avoided. Advantageously, all the recesses are of the same size, so that with a corresponding design of the protective elements, these can be interchanged with one another and inserted into the recesses.

Weiterhin bevorzugt ist an der Tragplatte oder einem die Tragplatte umgebenden Gehäuseteil wenigstens eine weiteres Bürstenelement angeordnet, das Borsten besitzt, die im Wesentlichen senkrecht zur Werkstück- oder Bauteiloberfläche ausgerichtet sind und bei der Bearbeitung einer Werkstück- oder Bauteiloberfläche an dieser anliegen. Ein derartig ausgebildetes Handwerkzeug weist somit wenigstens ein im Wesentlichen parallel sowie senkrecht zur Werkstück- oder Bauteiloberfläche ausgerichtetes Bürstenelement auf.Further preferably, at least one further brush element is arranged on the support plate or a housing part surrounding the support plate, which has bristles which are aligned substantially perpendicular to the workpiece or component surface and bear against the workpiece or component surface during machining. Such a trained hand tool thus has at least one substantially parallel and perpendicular to the workpiece or component surface aligned brush element.

Vorteilhafterweise sind beide Bürstenelemente in einem Bauteil zusammengefasst, beispielsweise können die jeweiligen Borsten in einer gemeinsamen Leiste aufgenommen sein. Bei Einsatz eines derartigen Schutzelements werden nicht nur angrenzende Werkstück- oder Bauteiloberflächen vor Beschädigungen geschützt, sondern zusätzlich auch die zu bearbeitende Werkstück- oder Bauteiloberfläche. Ferner begrenzen die senkrecht zur Werkstück- oder Bauteiloberfläche gerichteten Borsten einen Absaugbereich, der hierdurch zusätzlich eine Begrenzung erfährt. Weiterhin verhindern die Borsten, dass Schleifpartikel über den Spalt zwischen Schleifmaschine und Werkstück- oder Bauteiloberfläche herausgeschleudert werden. Alternativ kann auch vorgesehen sein, ein Bürstenelement mit einem senkrecht zur Werkstück- oder Bauteiloberfläche ausgerichteten Dichtwulst oder einer Dichtlippe auszubilden. Im Falle der bevorzugt als Außenecke ausgebildeten Profilteile kann eine Kombination mit senkrecht stehenden Borsten gewählt werden, da diese ohne Veränderung der Borstenabstände zueinander um die Außenecke herumgeführt werden können. Die Tragplatte oder das Gehäuseteil des Handwerkzeugs kann somit einen umlaufenden Borstenkranz mit senkrecht zur Werkstück- oder Bauteiloberfläche ausgerichteten Borsten aufweisen, während die radial wirkende Schutzeinrichtung aus Bürstenelementen und Profilsteilen zusammengesetzt ist.Advantageously, both brush elements are combined in one component, for example, the respective bristles can be accommodated in a common strip. When using such a protective element not only adjacent workpiece or component surfaces are protected from damage, but also the workpiece or component surface to be machined. Furthermore, the bristles directed perpendicular to the workpiece or component surface limit a suction region, which thereby additionally experiences a limitation. Furthermore, the bristles prevent abrasive particles from being thrown out over the gap between the grinding machine and the workpiece or component surface. Alternatively, it can also be provided to form a brush element with a sealing bead or a sealing lip aligned perpendicular to the workpiece or component surface. In the case of preferably designed as an outer corner profile parts, a combination with vertical bristles can be chosen, since they can be guided around each other around the outer corner without changing the bristle spacings. The support plate or the housing part of the hand tool can thus have a circumferential bristle rim with aligned perpendicular to the workpiece or component surface bristles, while the radially acting protection device is composed of brush elements and profile parts.

Aufgrund der vorstehend beschriebenen bevorzugten Einsatzbereiche, ist das erfindungsgemäße Handwerkzeug eine Schleifmaschine, insbesondere ein Schwingschleifer, Exzenterschleifer oder ein Tellerschleifer. Entsprechend ist die Tragplatte rechteckig oder rund ausgeführt. Da bei einer runden Tragplattenausführung die Ausbildung einer Außenecke entfällt, kann als Schutzeinrichtung auch ein umlaufender Borstenkranz vorgesehen sein, der Borsten besitzt, die im Wesentlichen parallel und/oder schräg zu bearbeitenden Oberfläche ausgerichtet sind. Ergänzend können zur besseren Absaugung senkrecht angeordnete Borsten vorgesehen sein, die die Funktionsfähigkeit einer Absaugeinheit unterstützen. Denn bevorzugt besitzt das erfindungsgemäße Handwerkzeug neben der Antriebseinheit und der Bearbeitungseinheit auch eine Absaugeinheit zum Abführen des abgetragenen Materials.Due to the preferred fields of application described above, the hand tool according to the invention is a grinding machine, in particular an orbital sander, eccentric sander or a disc sander. Accordingly, the support plate is rectangular or round. Since in a round Tragplattenausführung the formation of an outer corner is omitted, can be provided as a protective device, a circumferential bristle rim, which has bristles, which are aligned substantially parallel and / or obliquely machined surface. In addition, vertically arranged bristles can be provided for better extraction, which support the functionality of a suction unit. For preferably hand tool according to the invention has next the drive unit and the processing unit and a suction unit for discharging the removed material.

Weiterhin bevorzugt ist zwischen der Tragplatte und einem die Tragplatte umgebenden Gehäuseteil eine umlaufende Öffnung vorgesehen, die mit einer Absaugeinheit verbunden ist. Vorzugsweise ist dann die vorgeschlagene Schutzeinrichtung am Gehäuseteil angeordnet, wobei Bürstenelemente der Schutzeinrichtung einen Absaugebereich begrenzen, der sicherstellt, dass das abgetragene Material über die umlaufende Öffnung der Absaugeinheit zugeführt wird.Further preferably, a circumferential opening is provided between the support plate and a housing part surrounding the support plate, which is connected to a suction unit. Preferably, then, the proposed protective device is arranged on the housing part, wherein brush elements of the protective device limit a Absaugebereich, which ensures that the removed material is supplied through the peripheral opening of the suction unit.

Ein mögliches Einsatzgebiet des erfindungsgemäßen Handwerkzeuges stellt beispielsweise die Oberflächenbearbeitung von Dämmplatten dar. Enthalten diese Polystyrol oder ähnliche Materialien, besteht bei der Bearbeitung die Gefahr einer elektrischen Aufladung. Um diese zu vermeiden, ist vorzugsweise ein die Tragplatte umgebendes Gehäuseteil des erfindungsgemäßen Handwerkzeuges geerdet.One possible field of application of the hand tool according to the invention is, for example, the surface treatment of insulating boards. If these contain polystyrene or similar materials, there is the risk of electrical charging during machining. In order to avoid this, a housing part of the hand tool according to the invention surrounding the support plate is preferably earthed.

Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der einzigen Figur näher beschrieben. Diese zeigt eine perspektivische Ansicht eines Schwingschleifers mit einer rechteckigen Tragplatte 3, als Teil einer Bearbeitungseinheit 2, die mittels einer Antriebseinheit 1 in Kreisbahnen bewegbar ist. Die Antriebseinheit 1 weist zur Stromversorgung einen Anschluss bzw. ein Anschlusskabel für den Anschluss an ein Stromnetz auf. Zum Halten und Führen des Handwerkzeugs ist ferner wenigstens ein Handgriff 12 vorgesehen. Bei dem vorliegenden Ausführungsbeispiel befindet sich die Antriebseinheit 1 und die Bearbeitungseinheit 2 in separaten Gehäuseteilen, die miteinander verbindbar sind. Das Gehäuseteil 4 der Bearbeitungseinheit 2 weist eine rechteckige Platte auf, deren Grundfläche größer als die der Tragplatte 3 ist. Das Gehäuseteil 4 überragt umfangseitig somit die Tragplatte 3, oder anders ausgedrückt steht die Umrisskante 4.1 des Gehäuseteils 4 vor der Umrisskante 3.1 der Tragplatte 3. Wird der Schwingschleifer nunmehr über die zu bearbeitende Werkstück- bzw. Bauteiloberfläche geführt, stellt die Umrisskante 4.1 des Gehäuseteils 4 die Außenkante dar, die bei Kontakt mit angrenzenden Werkstück- oder Bauteiloberflächen zu Beschädigungen derselben führen kann. Schäden können insbesondere durch die exponierten Außenecken 13 hervorgerufen werden. Zum Schutz angrenzender Bauteile sind die Längskanten 14 und die Außenecken 13 mit einer Schutzeinrichtung 5 versehen, die wenigstens ein Bürstenelement 6 umfasst. Das Bürstenelement 6 kommt dabei als Schutzeinrichtung 5 der Längskanten 14 zum Tragen. Ferner umfasst die Schutzeinrichtung 5 ein Profilteil 9, das die Außenecken 13 umgibt. Das Profilteil 9 stellt einen besonders einfach herstellbaren Eckschutz dar. Die Ausbildung eines Bürstenelements 6 als Außenecke wäre nur schwierig herstellbar, insbesondere müssten die Borsten 7 des Bürstenelements 6 um die Außenecke 13 herumgeführt werden, wobei diese sich von der Außenecke 13 radial nach außen erstrecken würden und die Borstenzwischenräume derart aufgeweitet würden, dass ein ausreichender Schutz nicht mehr gewährleistet wäre. Das Bürstenelement 6 mit parallel zur Tragplatte 3 ausgerichteten Borsten 7 ist daher als lineares Element ausgeführt und überdeckt die Umrisskante 4.1 des Gehäuseteils 4 entlang der Längskanten 14. Zur einfachen Verbindung des Bürstenelements 6 mit dem Gehäuseteil 4 sind die Borsten 7 in einer Leiste 8 aufgenommen, die im Wesentlichen flächenbündig in Ausnehmungen 10 des Gehäuseteils 4 einsetzbar sind. Die Verbindung erfolgt vorliegend mittels Befestigungsschrauben, die einen sicheren Halt gewährleisten und zum Auswechseln des Bürstenelements 6 wieder leicht zu lösen sind. Die Leiste 8 sowie die Ausnehmungen 10 weisen zur Aufnahme der Befestigungsschrauben Bohrungen 15 auf. Die identische Ausbildung der Ausnehmungen 10 einschließlich der Bohrungen 15 erlaubt das Einsetzen eines beliebigen Bürstenelements 6, dessen Leiste 8 im Wesentlichen immer gleich ausgebildet ist. Insoweit kann zwischen verschiedenen Bürstenelementen 6 gewählt werden, die sich beispielsweise hinsichtlich der Borstenart, der Borstenlänge oder der Borstendichte unterscheiden. Ferner ist der Einsatz von Bürstenelementen 6 möglich, die neben parallel und/oder schräg zur bearbeitenden Werkstück- oder Bauteiloberfläche ausgerichtete Borsten 7 auch senkrecht hierzu stehende Borsten 11 aufweisen. Das Bürstenelement 6 kann auf diese Weise nicht nur als erfindungsgemäße Schutzeinrichtung 5, sondern auch als äußere Begrenzung eines Absaugbereichs eingesetzt werden. Die Borsten 11 sind dabei bevorzugt ebenfalls in der Leiste 8 aufgenommen.A preferred embodiment of the invention will be described below with reference to the single figure. This shows a perspective view of an orbital sander with a rectangular support plate 3, as part of a processing unit 2, which is movable by means of a drive unit 1 in circular paths. The drive unit 1 has a connection for power supply to a connection or a connection cable for connection to a power grid. For holding and guiding the hand tool, at least one handle 12 is further provided. In the present embodiment, the drive unit 1 and the processing unit 2 are in separate housing parts, which are connectable to each other. The housing part 4 of the processing unit 2 has a rectangular plate whose base is larger than that of the support plate 3. The housing part 4 thus peripherally projects beyond the support plate 3, or in other words, the contour edge 4.1 of the housing part 4 in front of the contour edge 3.1 of the support plate 3. Is the Orbital sander now guided over the workpiece or component surface to be machined, the contour edge 4.1 of the housing part 4 is the outer edge, which can lead to damage of the same upon contact with adjacent workpiece or component surfaces. Damage can be caused in particular by the exposed outer corners 13. To protect adjacent components, the longitudinal edges 14 and the outer corners 13 are provided with a protective device 5 which comprises at least one brush element 6. The brush element 6 comes as a protective device 5 of the longitudinal edges 14 to bear. Furthermore, the protective device 5 comprises a profile part 9, which surrounds the outer corners 13. The formation of a brush element 6 as an outer corner would be difficult to produce, in particular the bristles 7 of the brush element 6 would have to be guided around the outer corner 13, which would extend radially outward from the outer corner 13 and the bristle spaces would be widened so that adequate protection would no longer be guaranteed. The brush element 6 with bristles 7 aligned parallel to the support plate 3 is therefore designed as a linear element and covers the contour edge 4.1 of the housing part 4 along the longitudinal edges 14. For easy connection of the brush element 6 with the housing part 4, the bristles 7 are received in a bar 8, which are essentially flush in recesses 10 of the housing part 4 can be used. The connection takes place here by means of fastening screws, which ensure a secure fit and are easy to replace again to replace the brush element 6. The strip 8 and the recesses 10 have holes 15 for receiving the fastening screws. The identical design of the recesses 10 including the holes 15 allows the insertion of any brush element 6, the strip 8 is formed substantially always the same. In that regard, it is possible to choose between different brush elements 6, which differ, for example, with regard to the bristle type, the bristle length or the bristle density. Furthermore, the use of brush elements 6 is possible, in addition to parallel and / or obliquely to the machined workpiece or Component surface aligned bristles 7 also perpendicular thereto standing bristles 11. The brush element 6 can be used in this way not only as a protective device 5 according to the invention, but also as the outer boundary of a suction. The bristles 11 are preferably also included in the bar 8.

Die einzelnen Ausnehmungen 10 zur Aufnahme der Leisten 8 der Bürstenelemente 6 weisen zwischenliegende Stege 16 auf, die durch schräg stehende Borsten an den jeweiligen Leistenenden sicher abgedeckt werden können. Sofern sich im Bereich eines Steges 16 benachbarte Bürstenelemente 6 nicht durch schräg stehende Borsten berühren, wird ein verbleibender Zwischenraum durch federnd nachgebende umliegende Borsten ausreichend geschützt.The individual recesses 10 for receiving the strips 8 of the brush elements 6 have intermediate webs 16 which can be safely covered by obliquely standing bristles on the respective strip ends. If adjacent brush elements 6 in the area of a web 16 do not touch by bristles that are at an angle, a remaining gap is adequately protected by resilient surrounding bristles.

Auch wenn als einziges Ausführungsbeispiel ein Schwingschleifer mit recheckiger Tragplatte 3 dargestellt ist, beschränkt sich die Erfindung nicht allein hierauf. Schutzeinrichtungen der vorstehend beschriebenen Art können gleichermaßen bei gattungsemäßen Handwerkzeugen, wie beispielsweise Bandschleifern, Exzenterschleifern und dergleichen eingesetzt werden.Even if the only embodiment shown is an orbital sander with rectangular bearing plate 3, the invention is not limited to this alone. Protective devices of the type described above can equally be used in generic hand tools, such as belt grinders, eccentric grinders and the like.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Antriebseinheitdrive unit
22
Bearbeitungseinheitprocessing unit
33
Tragplattesupport plate
3.13.1
Umrisskante TragplatteOutline edge of support plate
44
Gehäuseteilhousing part
4.14.1
Umrisskante GehäuseteilOutline edge of housing part
55
Schutzeinrichtungguard
66
Bürstenelementbrush element
77
Borstenbristles
88th
Leistestrip
99
Profilteilprofile part
1010
Ausnehmungrecess
1111
Borstenbristles
1212
Handgriffhandle
1313
Außeneckeoutside corner
1414
Längskantelongitudinal edge
1515
Bohrungendrilling
1616
Stegweb

Claims (12)

Handwerkzeug zur materialabtragenden Bearbeitung einer Werkstück- oder Bauteiloberfläche, insbesondere zum Schleifen von Oberflächen, mit einer Antriebseinheit (1) und einer Bearbeitungseinheit (2), die über die Antriebseinheit antreibbar ist und die eine Tragplatte (3) sowie ein mit der Tragplatte verbindbares Bearbeitungsmittel zum Abtragen des Materials umfasst,
gekennzeichnet durch
eine an der Tragplatte (3) oder einem die Tragplatte umgebenden Gehäuseteil (4) angeordnete Schutzeinrichtung (5), die wenigstens ein Bürstenelement (6) umfasst, das Borsten (7) besitzt, die im Wesentlichen parallel und/oder schräg zur bearbeitenden Oberfläche ausgerichtet sind und die Umrisskante (3.1, 4.1) der Tragplatte (3) oder des die Tragplatte umgebenden Gehäuseteils (4) zum Schutz von Oberflächen, die außerhalb der zu bearbeitenden Oberfläche liegen, in der Weise überragen, dass ein Kontakt der Tragplatte (3) oder des Gehäuseteils (4) mit einer solchen Oberfläche vermeidbar ist.Hand tool for material-removing machining of a workpiece or component surface, in particular for grinding surfaces, with a drive unit (1) and a processing unit (2) which is drivable via the drive unit and a support plate (3) and a connectable to the support plate processing means for Removal of the material includes,
marked by
a protective device (5) arranged on the support plate (3) or a housing part (4) surrounding the support plate and comprising at least one brush element (6) having bristles (7) aligned substantially parallel and / or obliquely to the machined surface are and the contour edge (3.1, 4.1) of the support plate (3) or of the support plate surrounding the housing part (4) for protecting surfaces that are outside the surface to be machined, in such a way that contact the support plate (3) or the housing part (4) with such a surface is avoidable. Handwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die
Borsten (7) des Bürstenelementes (6) zur Verbindung mit der Tragplatte (3) oder dem Gehäuseteil (4) in einer Leiste (8) gehalten sind.Hand tool according to claim 1, characterized in that the
Bristles (7) of the brush element (6) for connection to the support plate (3) or the housing part (4) in a bar (8) are held. Handwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schutzeinrichtung (5) zudem wenigstens ein Profilteil (9) umfasst, das die Umrisskante (3.1, 4.1) der Tragplatte (3) oder des Gehäuseteils (4) zum Schutz von Oberflächen, die außerhalb der zu bearbeitenden Oberfläche liegen, zumindest teilweise umgreift und/oder überragt.Hand tool according to claim 1 or 2, characterized in that the protective device (5) also comprises at least one profile part (9), the outline edge (3.1, 4.1) of the support plate (3) or the housing part (4) for the protection of surfaces, the lie outside the surface to be machined, at least partially embraces and / or surmounted. Handwerkzeug nach Anspruch 3, dadurch gekennzeichnet, dass das Profilteil (9) zumindest teilweise elastisch verformbar ist.Hand tool according to claim 3, characterized in that the profile part (9) is at least partially elastically deformable. Handwerkzeug nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Profilteil (9) als Außenecke ausgebildet und vorzugsweise aus Polyurethan hergestellt ist.Hand tool according to claim 3 or 4, characterized in that the profile part (9) formed as an outer corner and is preferably made of polyurethane. Handwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schutzeinrichtung (5) lösbar mit der Tragplatte (3) oder dem Gehäuseteil (4) verbunden ist, wobei die Verbindung vorzugsweise eine Steck-, Klemm-, Schraub- oder Rastverbindung ist.Hand tool according to one of claims 1 to 5, characterized in that the protective device (5) is detachably connected to the support plate (3) or the housing part (4), wherein the connection is preferably a plug-in, clamping, screw or latching connection , Handwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass an der Tragplatte (3) oder dem Gehäuseteil (4) wenigstens eine
Ausnehmung (10) zur Aufnahme der Schutzeinrichtung (5) vorgesehen ist.Hand tool according to one of claims 1 to 6, characterized in that on the support plate (3) or the housing part (4) at least one
Recess (10) for receiving the protective device (5) is provided. Handwerkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass an der Tragplatte (3) oder dem Gehäuseteil (4) wenigstens ein
Bürstenelement (6) angeordnet ist, das Borsten (11) besitzt, die im Wesentlichen senkrecht zur Werkstück- oder Bauteiloberfläche ausgerichtet sind und bei der Bearbeitung einer Werkstück- oder Bauteiloberfläche an dieser anliegen.Hand tool according to one of claims 1 to 7, characterized in that on the support plate (3) or the housing part (4) at least one
Brush element (6) is arranged, which has bristles (11) which are aligned substantially perpendicular to the workpiece or component surface and abut in the processing of a workpiece or component surface thereof. Handwerkzeug nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Handwerkzeug eine Schleifmaschine, insbesondere ein Schwingschleifer, Exzenterschleifer oder Tellerschleifer ist.Hand tool according to one of claims 1 to 8, characterized in that the hand tool is a grinding machine, in particular an orbital sander, eccentric sander or disc sander. Handwerkzeug nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Handwerkzeug neben der Antriebseinheit (1) und der
Bearbeitungseinheit (2) auch eine Absaugeinheit zum Abführen des abgetragenen Materials besitzt.Hand tool according to one of claims 1 to 9, characterized in that the hand tool in addition to the drive unit (1) and the
Processing unit (2) also has a suction unit for discharging the removed material. Handwerkzeug nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass zwischen der Tragplatte (3) und einem die Tragplatte umgebenden
Gehäuseteil (4) eine umlaufende Öffnung vorgesehen ist, die mit einer Absaugeinheit verbunden ist.Hand tool according to one of claims 1 to 10, characterized in that between the support plate (3) and a surrounding the support plate
Housing part (4) is provided a circumferential opening which is connected to a suction unit. Handwerkzeug nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass ein die Tragplatte (3) umgebendes Gehäuseteil (4) zur Vermeidung einer statischen Aufladung geerdet ist.Hand tool according to one of claims 1 to 11, characterized in that the support plate (3) surrounding the housing part (4) is grounded to avoid static electricity.
EP09159788A 2008-05-23 2009-05-08 Handheld tool for removing material from a workpiece or component surface Not-in-force EP2123398B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09159788T PL2123398T3 (en) 2008-05-23 2009-05-08 Handheld tool for removing material from a workpiece or component surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008024801A DE102008024801A1 (en) 2008-05-23 2008-05-23 Hand tool for material-removing machining of a workpiece or component surface

Publications (2)

Publication Number Publication Date
EP2123398A1 true EP2123398A1 (en) 2009-11-25
EP2123398B1 EP2123398B1 (en) 2011-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09159788A Not-in-force EP2123398B1 (en) 2008-05-23 2009-05-08 Handheld tool for removing material from a workpiece or component surface

Country Status (7)

Country Link
EP (1) EP2123398B1 (en)
AT (1) ATE537938T1 (en)
DE (1) DE102008024801A1 (en)
DK (1) DK2123398T3 (en)
ES (1) ES2378270T3 (en)
PL (1) PL2123398T3 (en)
PT (1) PT2123398E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070305A (en) * 2016-04-13 2018-12-21 费斯托工具有限责任公司 Hand-held tool machine with closure mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673744A (en) * 1971-02-12 1972-07-04 Anders Oimoen Portable grinder
DE3805962A1 (en) 1988-02-25 1989-09-07 Festo Kg PLATE GRINDING MACHINE
EP0799675A1 (en) * 1996-04-02 1997-10-08 S.P. Air Kabusiki Kaisha Power abrading tool
WO2008033377A2 (en) * 2006-09-12 2008-03-20 Black & Decker Inc. Sanding tool with pivotally coupled head assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475518A (en) * 1936-05-21 1937-11-22 Albert Victor Summers Improvements in portable electric cleaning and polishing tools
CH363405A (en) * 1959-05-19 1962-07-31 Jaeck Armand Hand-held portable device comprising a motor
DE7935820U1 (en) * 1979-12-20 1980-04-03 Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen GUIDE FRAME FOR HANDBAND GRINDING MACHINES
DE3805991A1 (en) * 1987-07-20 1989-02-02 Festo Kg PLATE GRINDING MACHINE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673744A (en) * 1971-02-12 1972-07-04 Anders Oimoen Portable grinder
DE3805962A1 (en) 1988-02-25 1989-09-07 Festo Kg PLATE GRINDING MACHINE
EP0799675A1 (en) * 1996-04-02 1997-10-08 S.P. Air Kabusiki Kaisha Power abrading tool
WO2008033377A2 (en) * 2006-09-12 2008-03-20 Black & Decker Inc. Sanding tool with pivotally coupled head assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070305A (en) * 2016-04-13 2018-12-21 费斯托工具有限责任公司 Hand-held tool machine with closure mechanism

Also Published As

Publication number Publication date
PL2123398T3 (en) 2012-05-31
DK2123398T3 (en) 2012-02-20
DE102008024801A1 (en) 2009-11-26
ATE537938T1 (en) 2012-01-15
ES2378270T3 (en) 2012-04-10
EP2123398B1 (en) 2011-12-21
PT2123398E (en) 2012-02-20
ES2378270T9 (en) 2012-06-22

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