EP1397228A1 - Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection - Google Patents

Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection

Info

Publication number
EP1397228A1
EP1397228A1 EP02740280A EP02740280A EP1397228A1 EP 1397228 A1 EP1397228 A1 EP 1397228A1 EP 02740280 A EP02740280 A EP 02740280A EP 02740280 A EP02740280 A EP 02740280A EP 1397228 A1 EP1397228 A1 EP 1397228A1
Authority
EP
European Patent Office
Prior art keywords
grinding plate
electric hand
plate
grinder according
grinding
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
EP02740280A
Other languages
German (de)
French (fr)
Other versions
EP1397228B1 (en
Inventor
Doris Reich
Steffen Wuensch
Joao Bergner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1397228A1 publication Critical patent/EP1397228A1/en
Application granted granted Critical
Publication of EP1397228B1 publication Critical patent/EP1397228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement

Definitions

  • the invention relates to a Elektrohandschleifma machine, in particular an eccentric grinder, the type defined in the preamble of claim 1.
  • Rubber body on the underside of which an ' abrasive sheet containing the abrasive is interchangeably fixed as a wearing part.
  • the rubber body is clipped over the outer edge of the grinding plate with an annular groove which is incorporated at the bottom of a central recess on the upper side of the rubber body facing away from the sanding sheet.
  • the abrasive carrier there called abrasive plate, is plate-shaped and by means of screws on the
  • the abrasive backing consists of a rigid top plate and a bottom plate made of soft material.
  • an abrasive sheet containing abrasive grain is releasably secured by means of a surface adhesive connection.
  • edge protection formed on the sanding plate protects the outer edges of the abrasive carrier made of soft material during the grinding process, particularly in the area of edges and gradations of the workpiece, and is very well protected by the protrusion of the circumferential protective member over the abrasive carrier cannot hit the workpiece at any time during the grinding process. This extremely reduces the wear on the abrasive carrier and significantly increases the service life of the abrasive carrier.
  • the protective member protruding in the grinding plate level over the outer contour of the abrasive carrier can be an integral part of the grinding disc, which is preferably made of plastic, or can be attached to the grinding disc as a separate component in the form of a circumferential strip.
  • the protective member partially overlaps the abrasive carrier on its outer surface, wherein in the one-piece embodiment of the protective member with the grinding plate, a circumferential angle piece on the grinding plate with a circumferential leg projects axially beyond the underside of the grinding plate receiving the abrasive carrier.
  • a circumferential strip is provided with a circumferential web which extends axially over the underside of the grinding plate.
  • FIG. 1 excerpts of a longitudinal section of a
  • FIG. 2 is an enlarged view of section II in Fig. 1
  • Fig. 3 is the same representation as in Fig. 2 of another embodiment.
  • the eccentric sander shown in detail in longitudinal section in FIG. 1 as an exemplary embodiment for a general electric hand-held grinder, which can also be designed as an orbital sander, for example, has an electric motor 11 accommodated in a housing 10, which has a grinding plate via an eccentric 13 fastened to its rotor shaft 12 14 drives.
  • the grinding plate 14 is axially fixed to the eccentric 13 by means of a fastening screw 15 screwed in at the end and is supported on the eccentric 13 by means of a ball bearing 16 integrated in the grinding plate .14, while the rotor shaft 12 is mounted in the housing 10 by means of a ball bearing 17.
  • a brake rubber 18 for braking the grinding plate 14 is designed such that it protects the housing 10 from damage at its largest diameter.
  • a fan 20 is attached to the rotor shaft 12, which sucks in air from the underside of the grinding plate 14 via dust extraction holes 21 present in the grinding plate 14 and conveys it to an air outlet connection 22, to which a dust collector filter is usually connected.
  • an abrasive carrier 23 made of soft material, preferably rubber, is releasably attached to the underside of the 5 sanding plate 14 molded from plastic.
  • the underside of the grinding plate 14 is coated with a surface adhesive 24, for example with a .
  • Velcro adhesive sheet covered with a counter surface adhesive layer 25 covering the disc surface of the abrasive medium carrier 23, for example a nonwoven,
  • Abrasive backing 23 produces.
  • the abrasive carrier 23 in the same way as in the abrasive disc 14, built-in suction holes 26 are machined, when the abrasive carrier 23 is placed correctly on the abrasive disc
  • abrasive carrier 23 On the underside of the abrasive carrier 23 facing away from the grinding plate 14 is an abrasive grit
  • the abrasive carrier 23 is provided with edge protection.
  • This edge protection has a protective member 30 running around the sanding plate 14, which protrudes in the plane of the sanding plate over the outer contour of the abrasive carrier 23 and partially overlaps the abrasive carrier 23 on its outer surface 231.
  • FIG. 2 the detail II in FIG. 1 is shown enlarged with the sanding sheet 27 removed.
  • the protective member 30 is an integral part of the grinding plate 14 and is injected when it is sprayed.
  • -It has a rotating elbow 31 on which on the axially projecting the abrasive carrier 23 receiving underside of the grinding disc 14 with a "circumferential leg 311 and thus the
  • Outer surface 141 of the grinding plate 14 partially overlaps.
  • the protective member 30 is a circumferential strip 32 fastened to the grinding plate 14 and made of an elastic material, preferably rubber.
  • the strip 32 is clipped onto the circumferential outer edge 141 of the grinding plate 14 and, with a circumferential web 321 also extending axially and projecting over the underside of the grinding plate 14, partially overlaps the outer surface 231 of the abrasive carrier 23.
  • the strip 32 is fixed on the grinding plate 14 by a tongue / groove connection, for which incorporated a circumferential groove 34 in the A.ußenrand 141 of the grinding plate 14 and at the '141 A.ußenrand the facing surface of the bar 32 has a projecting, circumferential Spring 35 is formed, which is pressed into the groove 34 in a positive and non-positive manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention relates to an electric portable grinding machine, particularly an eccentric grinder, which has a grinding plate (14) and a grinding abrasive support (23) that is held on the underside thereof and made of a soft material. In order to reduce wear to the grinding abrasive support (23) on its outer edge and to increase the serviceable life of the grinding abrasive support, the grinding plate (14) is provided with an edge protection having a protective element (30), which encircles the grinding plate (14) and which, in the plane of the grinding plate, projects over the outer contour of the grinding abrasive support (23).

Description

ELEKTROHANDSCHΞIFMASCHINE , INSBESONDERE EXZENTΞRSCHLEIFER, MIT KANTENSCHUTZELECTROHANDLING MACHINE, ESPECIALLY Eccentric Grinder, with edge protection
Stand der TechnikState of the art
Die Erfindung geht aus von einer Elektrohandschleifma schine, insbesondere einem Exzenterschleifer, der im Oberbegriff des Anspruch 1 definierten Gattung.The invention relates to a Elektrohandschleifma machine, in particular an eccentric grinder, the type defined in the preamble of claim 1.
Bei einem bekannten Exzenterschleifer (US 5 018 314) ist der Schleifmittelträger ein am Schleifteller befestigterIn a known eccentric grinder (US Pat. No. 5,018,314), the abrasive carrier is attached to the grinding plate
Gümmikörper, auf dessen Unterseite ein das Schleifmittel enthaltendes 'Schleifblatt als Verschleißteil wechselbar festgelegt ist. Der Gummikörper ist mit einer Ringnut, die am Grunde einer zentralen Ausnehmung auf der vom Schleifblatt abgekehrten Oberseite des- Gummikörpers eingearbeitet ist, über den Außenrand des Schleiftellers geklipst.Rubber body, on the underside of which an ' abrasive sheet containing the abrasive is interchangeably fixed as a wearing part. The rubber body is clipped over the outer edge of the grinding plate with an annular groove which is incorporated at the bottom of a central recess on the upper side of the rubber body facing away from the sanding sheet.
Bei einem bekannten Schwingschleifer (DE 197 08 086 A.1) ist der Schleifmittelträger, dort Schleifplatte genannt, plattenförmig ausgebildet und mittels Schrauben an dem alsIn a known orbital sander (DE 197 08 086 A.1), the abrasive carrier, there called abrasive plate, is plate-shaped and by means of screws on the
Schwingplatte ausgebildeten Schleifteller befestigt, wobei er - 7 -Swing plate trained grinding plate attached, he - 7 -
randseitig etwas über die A_ußenkontur der Schwingplatte übersteht. Der Schleifmittel-träger, besteht aus einer steifen oberseitigen Platte und einer unterseitigen Platte aus weichem Material. Auf der Unterseite der unterseitigen Platte ist ein schleifkornhaltiges Schleifblatt mittels einer Flächenhaftverbindung lösbar festgelegt.protrudes slightly beyond the outer contour of the vibrating plate. The abrasive backing consists of a rigid top plate and a bottom plate made of soft material. On the underside of the underside plate, an abrasive sheet containing abrasive grain is releasably secured by means of a surface adhesive connection.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Elektrohandschleifmaschine mit denThe electric hand grinder according to the invention with the
Merkmalen des Anspruchs 1 hat den Vorteil, daß durch den am Schleifteller ausgebildeten Kantenschutz die Außenkanten des aus weichem Material bestehenden Schleifmitteltragers beim Schleifvorgang, insbesondere im Bereich von Kanten und Abstufungen des Werkstücks, sehr gut geschützt werden und durch den Überstand des umlaufenden Schutzglieds über den Schleifmittelträger zu keinem Zeitpunkt des Schleifvorgangs an dem Werkstück anstoßen können. Damit wird der Verschleiß des Schleifmitteltragers extrem reduziert und die Standzeit des Schleifmitteltragers wesentlich erhöht. Das in der Schleiftellerebene über die Außenkontur des Schleifmitteltragers vortretende Schutzglied kann dabei eiήstückiger Bestandteil des vorzugsweise aus Kunststoff gefertigten _Schleiftellers sein oder als separates Bauteil in Form einer umlaufenden Leiste am Schleifteller befestigt werden .Features of claim 1 has the advantage that the edge protection formed on the sanding plate protects the outer edges of the abrasive carrier made of soft material during the grinding process, particularly in the area of edges and gradations of the workpiece, and is very well protected by the protrusion of the circumferential protective member over the abrasive carrier cannot hit the workpiece at any time during the grinding process. This extremely reduces the wear on the abrasive carrier and significantly increases the service life of the abrasive carrier. The protective member protruding in the grinding plate level over the outer contour of the abrasive carrier can be an integral part of the grinding disc, which is preferably made of plastic, or can be attached to the grinding disc as a separate component in the form of a circumferential strip.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Elektrohandschleifmaschine möglich. Gemäß einer bevorzugten Ausführungsform der Erfindung übergreift das Schutzglied den Schleifmittelträger teilweise auf dessen Außenfläche, wobei in der einstückigen Ausführung des Schutzglieds mit dem Schleifteller ein am Schleifteller umlaufendes Winkelstück mit einem umlaufenden Schenkel über die den Schleifmittelträger aufnehmende Unterseite des Schleiftellers axial übersteht. Bei der Ausbildung des Schutzglieds als am Schleifteller befestigtes separates Bauteil ist eine umlaufende Leiste mit einem sich axial über die Unterseite des Schleiftellers erstreckenden, umlaufenden Steg versehen.Advantageous further developments and improvements of the electric hand-held grinder specified in claim 1 are possible through the measures listed in the further claims. According to a preferred embodiment of the invention, the protective member partially overlaps the abrasive carrier on its outer surface, wherein in the one-piece embodiment of the protective member with the grinding plate, a circumferential angle piece on the grinding plate with a circumferential leg projects axially beyond the underside of the grinding plate receiving the abrasive carrier. When the protective member is designed as a separate component fastened to the grinding plate, a circumferential strip is provided with a circumferential web which extends axially over the underside of the grinding plate.
Der in beiden Ausführungsformen dadurch entstehende umlaufende Übergreifungsrand am Schleifmittelträger bietet einen verbesserten Schutz der Außenkontur desThe circumferential overlapping edge on the abrasive carrier that arises in both embodiments offers improved protection of the outer contour of the
Schleifmitteltr gers auch bei einem versehentlichen Verkanten der Elektrohandschleifmaschine.Abrasive carrier even if the electric hand grinder is accidentally tilted.
Zeichnungdrawing
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The invention is explained in more detail in the following description with reference to exemplary embodiments shown in the drawing. Show it:
Fig. 1 ausschnittweise einen Längsschnitt einesFig. 1 excerpts of a longitudinal section of a
ExzenterSchleifers,orbital sander,
Fig. 2 eine vergrößerte Darstellung des Ausschnitts II in Fig. 1 , Fig. 3 eine gleiche Darstellung wie in Fig. 2 eines weiteren Ausführungsbeispiels.2 is an enlarged view of section II in Fig. 1, Fig. 3 is the same representation as in Fig. 2 of another embodiment.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Der in Fig. 1 ausschnittweise im Längsschnitt dargestellte Exzenterschleifer als Ausführungsbeispiel für eine allgemeine Elektrohandschleifmaschine, die beispielsweise auch als Schwingschleifer ausgeführt sein kann, weist einen in einem - Gehäuse 10 aufgenommenen Elektromotor 11 auf, der über einen auf seiner Rotorwelle 12 befestigten Exzenter 13 einen Schleifteller 14 antreibt. Der Schleifteller 14 ist am Exzenter 13 mittels einer stirnseitig eingeschraubten Befestigungsschraube 15 axial festgelegt • und über ein im Schleifteller .14 integriertes Kugellager 16 am Exzenter 13 abgestützt, während die Rotorwelle 12 mittels eines Kugellagers 17 im Gehäuse 10 gelagert ist. Um die vorgeschriebene Schutzisolation zu gewährleisten, ist die Befestigungsschraube 15 von einer im 'Schleifteller 14 unverlierbar gehaltenen Kappe 19 abgedeckt, die nur durch Zerstören entfernt werden kann. An der dem Schleifteller 14 zugekehrten Unterseite des Gehäuses 10 ist ein Bremsgummi 18 zum Abbremsen des Schleiftellers 14 so ausgeführt, daß er das Gehäuse 10 an seinem größten Durchmesser vor Beschädigungen schützt. Zur Staubabsaugung ist ein Lüfter 20 auf der Rotorwelle 12 befestigt, der über im Schleifteller 14 vorhandene Staubabsauglöcher 21 von der Unterseite des Schleiftellers 14 her Luft ansaugt und zu einem Luftauslaßstutzen 22 fördert, an dem üblicherweise ein Staubauffangfilter angeschlossen ist. Zur Schleifbearbeitung von Werkstücken ist ein Schleifmittelträger 23 aus weichem Material, vorzugsweise aus Gummi, an der Unterseite des aus Kunststoff gespritzten 5 Schleiftellers 14 lösbar befestigt. Hierzu ist die Unterseite des Schleiftellers 14 mit einem Flächenhaftmittel 24, z.B. mit einer .Klettenhaftbahn, überzogen das mit einer die eine Scheibenfläche des Schleifmitteltragers 23 abdeckenden Gegenflächenhaftschicht 25, z.B. ein Vlies, eine •The eccentric sander shown in detail in longitudinal section in FIG. 1 as an exemplary embodiment for a general electric hand-held grinder, which can also be designed as an orbital sander, for example, has an electric motor 11 accommodated in a housing 10, which has a grinding plate via an eccentric 13 fastened to its rotor shaft 12 14 drives. The grinding plate 14 is axially fixed to the eccentric 13 by means of a fastening screw 15 screwed in at the end and is supported on the eccentric 13 by means of a ball bearing 16 integrated in the grinding plate .14, while the rotor shaft 12 is mounted in the housing 10 by means of a ball bearing 17. To the prescribed protective insulation to ensure the fixing screw 15 is covered by a captively held in the 'sanding plate 14 cap 19 which can be removed only by destruction. On the underside of the housing 10 facing the grinding plate 14, a brake rubber 18 for braking the grinding plate 14 is designed such that it protects the housing 10 from damage at its largest diameter. For dust extraction, a fan 20 is attached to the rotor shaft 12, which sucks in air from the underside of the grinding plate 14 via dust extraction holes 21 present in the grinding plate 14 and conveys it to an air outlet connection 22, to which a dust collector filter is usually connected. For grinding workpieces, an abrasive carrier 23 made of soft material, preferably rubber, is releasably attached to the underside of the 5 sanding plate 14 molded from plastic. For this purpose, the underside of the grinding plate 14 is coated with a surface adhesive 24, for example with a . Velcro adhesive sheet, covered with a counter surface adhesive layer 25 covering the disc surface of the abrasive medium carrier 23, for example a nonwoven,
10 Flächenhaftverbindung zwischen Schleifteller 14 und10 surface connection between sanding pad 14 and
Schleifmittelträger 23 herstellt. In dem Schleifmittelträger 23 sind in gleicher Weise wie in den Schleifteller 14 Stbauabsauglöcher 26 eingearbeit, die beim richtigen Aufsetzen des Schleifmitteltragers 23 auf den SchleiftellerAbrasive backing 23 produces. In the abrasive carrier 23, in the same way as in the abrasive disc 14, built-in suction holes 26 are machined, when the abrasive carrier 23 is placed correctly on the abrasive disc
15 14 kongruent mit den Staubabsauglöchern 21 im Schleifteller 14 liegen.15 14 are congruent with the dust extraction holes 21 in the grinding plate 14.
An der vom Schleifteller 14 abgekehrten Unterseite des Schleifmitteltragers 23 ist ein schleifkornhaltigesOn the underside of the abrasive carrier 23 facing away from the grinding plate 14 is an abrasive grit
20 Schleifblatt 29 lösbar befestigt. Die Befestigung erfolgt "wiederum über eine Flächenhaftverbindung, die wie die Flächenhaftverbindung zwischen Schleifmittelträger 23 und Schleifteller 14 mittels eines am Schleifmittelträger 23 angeordneten Flächenhaftmittels 28 und einer auf der20 sanding sheet 29 releasably attached. Fastening is again carried out by means of a surface adhesive connection which, like the surface adhesive connection between the abrasive carrier 23 and the grinding plate 14, by means of a surface adhesive 28 arranged on the abrasive carrier 23 and one on the
25 Rückseite des Schleifblatts 27 angeordneten Gegenflächenhaftschicht 29 hergestellt wird.25 back of the sanding sheet 27 arranged counter surface adhesive layer 29 is produced.
Um beim Schleifen von Werkstücken den weichen Schleifmittelträger 23 vor einem Anstoßen an Kanten, Ecken 30. oder Abstufungen im Werkstück zu schützen, was zu Beschädigungen oder Verschleiß der Außenseiten des Schleifmitteltragers 23 führen würde, ist der Schleifmittelträger 23 mit einem Kantenschutz versehen. Dieser Kantenschutz weist ein am Schleifteller 14 umlaufendes Schutzglied 30 auf, das in der Schleiftellerebene über die Außenkontur des Schleifmitteltragers 23- vortritt und den Schleifmittelträger 23 auf dessen Außenfläche 231 teilweise übergreift.In order to protect the soft abrasive backing 23 from being knocked against edges, corners 30 or gradations in the workpiece when grinding workpieces, which can damage or wear the outer sides of the Would lead abrasive carrier 23, the abrasive carrier 23 is provided with edge protection. This edge protection has a protective member 30 running around the sanding plate 14, which protrudes in the plane of the sanding plate over the outer contour of the abrasive carrier 23 and partially overlaps the abrasive carrier 23 on its outer surface 231.
In Fig. 2 ist der Ausschnitt II in Fig. 1 bei abgenommenem Schleifblatt 27 vergrößert dargestellt. Das Schutzglied 30 ist einstückiger Bestandteil des Schleiftellers 14 und wird bei dessen Spritzen mit angespritzt. -Es weist ein umlaufendes Winkelstück 31 auf, das mit einem' umlaufenden Schenkel 311 über die den Schleifmittelträger 23 aufnehmende Unterseite des Schleiftellers 14 axial vorsteht und damit dieIn FIG. 2, the detail II in FIG. 1 is shown enlarged with the sanding sheet 27 removed. The protective member 30 is an integral part of the grinding plate 14 and is injected when it is sprayed. -It has a rotating elbow 31 on which on the axially projecting the abrasive carrier 23 receiving underside of the grinding disc 14 with a "circumferential leg 311 and thus the
Außenfläche 141 des Schleiftellers 14 teilweise übergreift.Outer surface 141 of the grinding plate 14 partially overlaps.
In dem in Fig. 3 mit einem gleichen Ausschnitt vergrößert dargestellten weiteren Ausführungsbeispiel des Schleiftellers 14 ist das Schutzglied 30 eine am Schleifteller 14 befestigte, umlaufende Leiste 32 aus einem elastischen Material, vorzugsweise aus Gummi. Die Leiste 32 wird auf den umlaufenden Außenrand 141 des Schleiftellers 14 aufgeklipst und übergreift mit einem sich ebenfalls axial erstreckenden, über die Unterseite des Schleiftellers 14 überstehenden, umlaufenden Steg 321 teilweise die Außenfläche 231 des Schleifmitteltragers 23. Die Festlegung der Leiste 32 am Schleifteller 14 erfolgt durch eine Nut- /Federverbindung, wozu in den A.ußenrand 141 des Schleiftellers 14 eine umlaufende Nut 34 eingearbeitet und an der 'dem A.ußenrand 141 zugekehrten Fläche der Leiste 32 eine vorstehende, umlaufende Feder 35 angeformt ist, die form- und kraftschlüssig in die Nut 34 eingedrückt ist. In the further exemplary embodiment of the grinding plate 14 shown enlarged with the same detail in FIG. 3, the protective member 30 is a circumferential strip 32 fastened to the grinding plate 14 and made of an elastic material, preferably rubber. The strip 32 is clipped onto the circumferential outer edge 141 of the grinding plate 14 and, with a circumferential web 321 also extending axially and projecting over the underside of the grinding plate 14, partially overlaps the outer surface 231 of the abrasive carrier 23. The strip 32 is fixed on the grinding plate 14 by a tongue / groove connection, for which incorporated a circumferential groove 34 in the A.ußenrand 141 of the grinding plate 14 and at the '141 A.ußenrand the facing surface of the bar 32 has a projecting, circumferential Spring 35 is formed, which is pressed into the groove 34 in a positive and non-positive manner.

Claims

Ansprüche Expectations
1. Elektrohandschleifmaschine, insbesondere1. Electric hand grinder, in particular
Exzenterschleifer, mit einem Schleifteller (14), an dessen Unterseite ein Schleifmittelträger (23) aus weichem Material gehalten ist, dadurch gekennzeichnet, daß der Schleifteller (14) mit einem Kantenschutz versehen ist, der ein am Schleifteller (14) umlaufendes Schutzglied (30) aufweist, das in der Schleiftellerebene über die Außenkontur des Schleifmitteltragers (23) vortritt.Eccentric sander, with a sanding plate (14), on the underside of which an abrasive carrier (23) made of soft material is held, characterized in that the sanding plate (14) is provided with an edge protector which surrounds a protective member (30) on the sanding plate (14). has, which occurs in the grinding plate level on the outer contour of the abrasive carrier (23).
2. Elektrohandschleifmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Schutzglied (30) den Schleifmittelträger (23) auf dessen Außenfläche (231) mindestens teilweise übergreift.2. Electric hand grinder according to claim 1, characterized in that the protective member (30) overlaps the abrasive carrier (23) on its outer surface (231) at least partially.
3. Elektrohandschleifmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Schutzglied (30) einstückiger Bestandteil des Schleiftellers (14) ist.3. Electric hand grinder according to claim 1 or 2, characterized in that the protective member (30) is an integral part of the grinding plate (14).
4. Elektrohandschleifmaschine nach Anspruch 2 und 3, dadurch gekennzeichnet, daß das Schutzglied (30) ein außen am Schleifteller (14) angeformtes, umlaufendes Winkelstück (31) ist, das mit einem Schenkel .(311) über die den Schleifmittelträger (23) aufnehmende Unterseite des Schleiftellers (14) axial übersteht.4. Electric hand grinder according to claim 2 and 3, characterized in that the protective member (30) on the outside of the grinding plate (14) integrally formed, rotating Angle piece (31), which with one leg (311) projects axially beyond the underside of the grinding plate (14) receiving the abrasive carrier (23).
5. Elektrohandschleifmaschine nach Anspruch 4, dadurch gekennzeichnet, daß der Schleifteller (14) aus Kunststoff gespritzt ist und das Winkelstück (31) mit Schenkel (311) beim Spritzvorgang mit angespritzt wird.5. Electric hand grinder according to claim 4, characterized in that the grinding plate (14) is injection molded from plastic and the angle piece (31) with legs (311) is injected during the injection process.
6. Elektrohandschleifmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Ξchutzglied (30) eine am Schleifteller (14) befestigte, umlaufende Leiste (32) ist.6. Electric hand-held grinder according to claim 1 or 2, characterized in that the protective member (30) is a peripheral strip (32) attached to the grinding plate (14).
7. Elektrohandschleifmaschine nach Anspruch 2 und 6, dadurch gekennzeichnet, daß die Leiste (32) einen über die den Schleifmittelträger (23) aufnehmende Unterseite des Schleiftellers (14) überstehenden, sich axial erstreckenden, umlaufenden Steg (321) aufweist. ' ■ 7. Electric hand-held grinder according to claim 2 and 6, characterized in that the strip (32) has an axially extending, circumferential web (321) projecting over the underside of the grinding plate (14) receiving the abrasive carrier (23). '■
8. Elektrohandschleifmaschine nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Leiste (32) aus einem elastischen Material gefertigt ist.8. Electric hand grinder according to claim 6 or 7, characterized in that the strip (32) is made of an elastic material.
9. Elektrohandschleifmaschine nach einem der Ansprüche 6 - 8, dadurch gekennzeichnet, daß die Leiste (32) auf den A.ußenrand (141) des Schleiftellers (14) aufgeklipst ist.9. Electric hand grinder according to one of claims 6-8, characterized in that the bar (32) is clipped onto the outer edge (141) of the grinding plate (14).
10. Elektrohandschleifmaschine nach Anspruch 9, dadurch gekennzeichnet, daß die Klipsverbindung zwischen Leiste (32) und Schleifteller (14) aus einer in den A.ußenrand (141) des Schleiftellers (14) eingearbeiteten, umlaufenden Nut (34) und einer auf der der Außenfläche10. Electric hand grinder according to claim 9, characterized in that the clip connection between the strip (32) and grinding plate (14) from one in the outer edge (141) of the grinding plate (14) machined, circumferential groove (34) and one on the outer surface
(131) zugekehrten Innenseite der Leiste (32) angeformten, umlaufenden Feder (35) besteht, die kraft- und formschlüssig in die Nut (34) eintaucht. (131) facing inside of the bar (32) molded, circumferential spring (35), which immerses force and form fit in the groove (34).
EP02740280A 2001-06-01 2002-04-23 Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection Expired - Lifetime EP1397228B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10126675 2001-06-01
DE10126675A DE10126675A1 (en) 2001-06-01 2001-06-01 Electric hand-held grinder machine has support on underside of grinder plate, rim-guard, elastic bar, and axial arm
PCT/DE2002/001475 WO2002098607A1 (en) 2001-06-01 2002-04-23 Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection

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EP1397228A1 true EP1397228A1 (en) 2004-03-17
EP1397228B1 EP1397228B1 (en) 2008-05-28

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EP02740280A Expired - Lifetime EP1397228B1 (en) 2001-06-01 2002-04-23 Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection

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US (1) US6857949B2 (en)
EP (1) EP1397228B1 (en)
JP (1) JP2004519352A (en)
CN (1) CN1231329C (en)
DE (2) DE10126675A1 (en)
WO (1) WO2002098607A1 (en)

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FI129765B (en) * 2007-03-21 2022-08-15 Oy Kwh Mirka Ab Compact electric grinding machine
DE202011109293U1 (en) * 2011-12-20 2012-12-05 Kolthoff & Co. sanding pad
EP2636483A1 (en) 2012-03-08 2013-09-11 Guido Valentini Hand-held machine tool for sanding, grinding or polishing a workpiece
EP3074177B1 (en) * 2013-11-29 2018-12-26 Black & Decker Inc. Sander having two-piece fan
DE102017122141A1 (en) * 2017-09-25 2019-03-28 Jakob Löwer Inh. von Schumann GmbH & Co. KG Device for producing an undefined finishes on a surface of a metal workpiece in a continuous process
CN108436701A (en) * 2018-03-26 2018-08-24 冯海松 A kind of letter box arrangement

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WO2002098607A1 (en) 2002-12-12
CN1231329C (en) 2005-12-14
US20030148719A1 (en) 2003-08-07
DE10126675A1 (en) 2002-12-05
EP1397228B1 (en) 2008-05-28
CN1462224A (en) 2003-12-17
DE50212325D1 (en) 2008-07-10
JP2004519352A (en) 2004-07-02
US6857949B2 (en) 2005-02-22

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