EP1397228B1 - 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 Download PDF

Info

Publication number
EP1397228B1
EP1397228B1 EP02740280A EP02740280A EP1397228B1 EP 1397228 B1 EP1397228 B1 EP 1397228B1 EP 02740280 A EP02740280 A EP 02740280A EP 02740280 A EP02740280 A EP 02740280A EP 1397228 B1 EP1397228 B1 EP 1397228B1
Authority
EP
European Patent Office
Prior art keywords
sanding plate
portable electric
sander according
electric sander
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02740280A
Other languages
German (de)
French (fr)
Other versions
EP1397228A1 (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

Links

Images

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 an electric hand grinder, in particular an eccentric grinder, the genus defined in the preamble of claim 1 (see, eg US-A-5,292,352 ).
  • the abrasive carrier is a rubber body attached to the sanding pad, on the underside of which a sanding sheet containing the abrasive is changeable as a wearing part.
  • the rubber body is clipped with an annular groove, which is incorporated at the bottom of a central recess on the upper side facing away from the sanding sheet of the rubber body over the outer edge of the sanding pad.
  • the abrasive carrier In a known orbital sander ( DE 197 08 086 A1 ), the abrasive carrier, there called a grinding plate, plate-shaped and fastened by means of screws on the formed as a vibrating plate sanding pad, where he slightly beyond the outer contour of the oscillating plate.
  • the abrasive carrier consists of a rigid top plate and a bottom plate of soft material.
  • On the underside of the underside plate a grinding grain-containing abrasive sheet is releasably fixed by means of a surface bond.
  • the electric hand grinding machine according to the invention with the features of claim 1 has the advantage that the outer edges of the abrasive material carrier made of soft material during the grinding process, especially in the range of edges and gradations of the workpiece are very well protected by the protrusion of the sanding pad and by the supernatant of circulating guard member on the abrasive carrier at any time of the grinding process can abut the workpiece.
  • the protective member projecting in the grinding plate plane beyond the outer contour of the abrasive carrier can be an integral part of the grinding plate, preferably made of plastic, or attached to the grinding plate as a separate component in the form of a circumferential strip.
  • the protective member engages the abrasive carrier partially on the outer surface, wherein in the one-piece design of the protective member with the sanding pad an encircling at the sanding plate elbow with a circumferential leg over the abrasive carrier receiving bottom of the sanding plate protrudes axially.
  • a circumferential bar provided with an axially extending over the underside of the sanding plate, circumferential ridge.
  • the circumferential overlapping edge on the abrasive carrier that results in both embodiments offers improved protection of the outer contour of the abrasive carrier even in the event of accidental tilting of the electric hand grinding machine.
  • FIG. 1 excerpts shown in longitudinal section eccentric grinder as an exemplary embodiment of a general electric hand grinder, which may for example be designed as orbital sander has a recorded in a housing 10 electric motor 11 which drives a sanding plate 14 mounted on its rotor shaft 12 a sanding pad 14-.
  • the sanding pad 14 is axially fixed on the eccentric 13 by means of a fastening screw 15 screwed in at the front and supported on the eccentric 13 via a ball bearing 16 integrated in the sanding pad 14, while the rotor shaft 12 is supported in the housing 10 by means of a ball bearing 17.
  • the fastening screw 15 is covered by a captive held in the sanding pad 14 cap 19, which can only be removed by destroying.
  • a brake rubber 18 for braking the grinding plate 14 is designed so that it protects the housing 10 at its largest diameter from damage.
  • a fan 20 is mounted on the rotor shaft 12, which sucks air from the underside of the sanding pad 14 via air in the sanding plate 14 existing dust extraction and promotes to a Lucasauslisterstutzen 22 to which usually a dust collecting filter is connected.
  • an abrasive carrier 23 made of soft material, preferably rubber, on the underside of the molded plastic grinding disc 14 is releasably attached.
  • the underside of the sanding pad 14 is provided with a surface adhesive 24, e.g. with a Velcro traction, coated with a surface adhesive layer 25 covering a disc surface of the abrasive carrier 23, e.g. a nonwoven, a surface bond between the sanding pad 14 and abrasive carrier 23 produces.
  • Staubabsauglöcher 26 are incorporated in the same manner as in the sanding pad 14, which are the correct placement of the abrasive carrier 23 on the sanding pad 14 congruent with the Staubabsauglöchern 21 in the sanding pad 14.
  • a grinding grain-containing abrasive sheet 29 is releasably attached.
  • the fastening is again effected by means of a surface bond which, like the surface bonding between the abrasive carrier 23 and the grinding disc 14, is produced by means of a surface adhesive 28 arranged on the abrasive carrier 23 and a counter-surface adhesive layer 29 arranged on the back side of the abrasive sheet 27.
  • the abrasive carrier 23 is provided with an edge protection.
  • This edge protector has a protective member 30 which revolves on the sanding pad 14 and which projects beyond the outer contour of the abrasive substrate 23 in the sanding plate plane and partially overlaps the abrasive substrate 23 on its outer surface 231.
  • Fig. 2 is the section II in Fig. 1 shown enlarged with removed grinding sheet 27.
  • the protective member 30 is an integral part of the grinding plate 14 and is injected with its injection. It has an encircling angle piece 31 which protrudes axially with the aid of a circumferential leg 311 via the underside of the sanding pad 14 receiving the abrasive carrier 23 and thus partially overlaps the outer surface 141 of the sanding pad 14.
  • the protective member 30 is attached to the sanding pad 14, circumferential strip 32 made of an elastic material, preferably made of rubber.
  • the strip 32 is clipped onto the peripheral outer edge 141 of the sanding pad 14 and engages with an axially extending, over the underside of the sanding pad 14 projecting, circumferential web 321 partially the outer surface 231 of the abrasive carrier 23.
  • the determination of the bar 32 on the sanding pad 14 takes place by a tongue and groove connection, for which purpose in the outer edge 141 of the grinding plate 14, a circumferential groove 34 incorporated and on the outer edge 141 facing surface of the bar 32 has a protruding, circumferential Spring 35 is formed, which is pressed positively and non-positively into the groove 34.

Landscapes

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

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Elektrohandschleifmaschine, insbesondere einem Exzenterschleifer, der im Oberbegriff des Anspruch 1 definierten Gattung (siehe z.B. US-A-5 292 352 ).The invention relates to an electric hand grinder, in particular an eccentric grinder, the genus defined in the preamble of claim 1 (see, eg US-A-5,292,352 ).

Bei einem bekannten Exzenterschleifer ( US 5 018 314 ) ist der Schleifmittelträger ein am Schleifteller befestigter Gummikörper, 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.In a known eccentric grinder ( US 5 018 314 ), the abrasive carrier is a rubber body attached to the sanding pad, on the underside of which a sanding sheet containing the abrasive is changeable as a wearing part. The rubber body is clipped with an annular groove, which is incorporated at the bottom of a central recess on the upper side facing away from the sanding sheet of the rubber body over the outer edge of the sanding pad.

Bei einem bekannten Schwingschleifer ( DE 197 08 086 A1 ) ist der Schleifmittelträger, dort Schleifplatte genannt, plattenförmig ausgebildet und mittels Schrauben an dem als Schwingplatte ausgebildeten Schleifteller befestigt, wobei er randseitig etwas über die Außenkontur der Schwingplatte übersteht. Der Schleifmittelträger 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.In a known orbital sander ( DE 197 08 086 A1 ), the abrasive carrier, there called a grinding plate, plate-shaped and fastened by means of screws on the formed as a vibrating plate sanding pad, where he slightly beyond the outer contour of the oscillating plate. The abrasive carrier consists of a rigid top plate and a bottom plate of soft material. On the underside of the underside plate a grinding grain-containing abrasive sheet is releasably fixed by means of a surface bond.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Elektrohandschleifmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß durch den am Schleifteller ausgebildeten Kantenschutz die Außenkanten des aus weichem Material bestehenden Schleifmittelträgers 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 Schleifmittelträgers extrem reduziert und die Standzeit des Schleifmittelträgers wesentlich erhöht. Das in der Schleiftellerebene über die Außenkontur des Schleifmittelträgers vortretende Schutzglied kann dabei einstückiger Bestandteil des vorzugsweise aus Kunststoff gefertigten Schleiftellers sein oder als separates Bauteil in Form einer umlaufenden Leiste am Schleifteller befestigt werden.The electric hand grinding machine according to the invention with the features of claim 1 has the advantage that the outer edges of the abrasive material carrier made of soft material during the grinding process, especially in the range of edges and gradations of the workpiece are very well protected by the protrusion of the sanding pad and by the supernatant of circulating guard member on the abrasive carrier at any time of the grinding process can abut the workpiece. Thus, the wear of the abrasive carrier is extremely reduced and significantly increases the service life of the abrasive carrier. The protective member projecting in the grinding plate plane beyond the outer contour of the abrasive carrier can be an integral part of the grinding plate, preferably made of plastic, or attached to the grinding plate 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.The measures listed in the further claims advantageous refinements and improvements of claim 1 electric hand grinder are possible.

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.According to a preferred embodiment of the invention, the protective member engages the abrasive carrier partially on the outer surface, wherein in the one-piece design of the protective member with the sanding pad an encircling at the sanding plate elbow with a circumferential leg over the abrasive carrier receiving bottom of the sanding plate protrudes axially. In the formation of the protective member as attached to the sanding pad separate component is a circumferential bar provided with an axially extending over the underside of the sanding plate, circumferential ridge.

Der in beiden Ausführungsformen dadurch entstehende umlaufende Übergreifungsrand am Schleifmittelträger bietet einen verbesserten Schutz der Außenkontur des Schleifmittelträgers auch bei einem versehentlichen Verkanten der Elektrohandschleifmaschine.The circumferential overlapping edge on the abrasive carrier that results in both embodiments offers improved protection of the outer contour of the abrasive carrier even in the event of accidental tilting of the electric hand grinding machine.

Zeichnungdrawing

Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
ausschnittweise einen Längsschnitt eines Exzenterschleifers,
Fig. 2
eine vergrößerte Darstellung des Ausschnitts II in Fig. 1,
Fig. 3
eine gleiche Darstellung wie in Fig. 2 eines weiteren Ausführungsbeispiels.
The invention is explained in more detail with reference to embodiments illustrated in the drawings in the following description. Show it:
Fig. 1
a section of a longitudinal section of an eccentric grinder,
Fig. 2
an enlarged view of the section II in Fig. 1 .
Fig. 3
a same representation as in Fig. 2 a further 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.The in Fig. 1 excerpts shown in longitudinal section eccentric grinder as an exemplary embodiment of a general electric hand grinder, which may for example be designed as orbital sander has a recorded in a housing 10 electric motor 11 which drives a sanding plate 14 mounted on its rotor shaft 12 a sanding pad 14-. The sanding pad 14 is axially fixed on the eccentric 13 by means of a fastening screw 15 screwed in at the front and supported on the eccentric 13 via a ball bearing 16 integrated in the sanding pad 14, while the rotor shaft 12 is supported in the housing 10 by means of a ball bearing 17. In order to ensure the prescribed protective insulation, the fastening screw 15 is covered by a captive held in the sanding pad 14 cap 19, which can only be removed by destroying. At the grinding plate 14 facing bottom of the housing 10, a brake rubber 18 for braking the grinding plate 14 is designed so that it protects the housing 10 at its largest diameter from damage. For dust extraction, a fan 20 is mounted on the rotor shaft 12, which sucks air from the underside of the sanding pad 14 via air in the sanding plate 14 existing dust extraction and promotes to a Luftauslaßstutzen 22 to which usually a dust collecting filter is connected.

Zur Schleifbearbeitung von Werkstücken ist ein Schleifmittelträger 23 aus weichem Material, vorzugsweise aus Gummi, an der Unterseite des aus Kunststoff gespritzten 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 Schleifmittelträgers 23 abdeckenden Gegenflächenhaftschicht 25, z.B. ein Vlies, eine Flächenhaftverbindung zwischen Schleifteller 14 und Schleifmittelträger 23 herstellt. In dem Schleifmittelträger 23 sind in gleicher Weise wie in den Schleifteller 14 Stbauabsauglöcher 26 eingearbeit, die beim richtigen Aufsetzen des Schleifmittelträgers 23 auf den Schleifteller 14 kongruent mit den Staubabsauglöchern 21 im Schleifteller 14 liegen.For grinding of workpieces, an abrasive carrier 23 made of soft material, preferably rubber, on the underside of the molded plastic grinding disc 14 is releasably attached. For this purpose, the underside of the sanding pad 14 is provided with a surface adhesive 24, e.g. with a Velcro traction, coated with a surface adhesive layer 25 covering a disc surface of the abrasive carrier 23, e.g. a nonwoven, a surface bond between the sanding pad 14 and abrasive carrier 23 produces. In the abrasive carrier 23 Staubabsauglöcher 26 are incorporated in the same manner as in the sanding pad 14, which are the correct placement of the abrasive carrier 23 on the sanding pad 14 congruent with the Staubabsauglöchern 21 in the sanding pad 14.

An der vom Schleifteller 14 abgekehrten Unterseite des Schleifmittelträgers 23 ist ein schleifkornhaltiges 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 der Rückseite des Schleifblatts 27 angeordneten Gegenflächenhaftschicht 29 hergestellt wird.At the side facing away from the sanding pad 14 underside of the abrasive carrier 23 a grinding grain-containing abrasive sheet 29 is releasably attached. The fastening is again effected by means of a surface bond which, like the surface bonding between the abrasive carrier 23 and the grinding disc 14, is produced by means of a surface adhesive 28 arranged on the abrasive carrier 23 and a counter-surface adhesive layer 29 arranged on the back side of the abrasive sheet 27.

Um beim Schleifen von Werkstücken den weichen Schleifmittelträger 23 vor einem Anstoßen an Kanten, Ecken oder Abstufungen im Werkstück zu schützen, was zu Beschädigungen oder Verschleiß der Außenseiten des Schleifmittelträgers 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 Schleifmittelträgers 23 vortritt und den Schleifmittelträger 23 auf dessen Außenfläche 231 teilweise übergreift.In order to protect the soft abrasive carrier 23 from abutting edges, corners or gradations in the workpiece during grinding of workpieces, resulting in damage or wear of the outer sides of the workpiece Abrasive carrier 23 would lead, the abrasive carrier 23 is provided with an edge protection. This edge protector has a protective member 30 which revolves on the sanding pad 14 and which projects beyond the outer contour of the abrasive substrate 23 in the sanding plate plane and partially overlaps the abrasive substrate 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 die Außenfläche 141 des Schleiftellers 14 teilweise übergreift.In Fig. 2 is the section II in Fig. 1 shown enlarged with removed grinding sheet 27. The protective member 30 is an integral part of the grinding plate 14 and is injected with its injection. It has an encircling angle piece 31 which protrudes axially with the aid of a circumferential leg 311 via the underside of the sanding pad 14 receiving the abrasive carrier 23 and thus partially overlaps the outer surface 141 of the sanding pad 14.

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 Schleifmittelträgers 23. Die Festlegung der Leiste 32 am Schleifteller 14 erfolgt durch eine Nut- /Federverbindung, wozu in den Außenrand 141 des Schleiftellers 14 eine umlaufende Nut 34 eingearbeitet und an der dem Außenrand 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 in Fig. 3 enlarged with a same section shown another embodiment of the sanding pad 14, the protective member 30 is attached to the sanding pad 14, circumferential strip 32 made of an elastic material, preferably made of rubber. The strip 32 is clipped onto the peripheral outer edge 141 of the sanding pad 14 and engages with an axially extending, over the underside of the sanding pad 14 projecting, circumferential web 321 partially the outer surface 231 of the abrasive carrier 23. The determination of the bar 32 on the sanding pad 14 takes place by a tongue and groove connection, for which purpose in the outer edge 141 of the grinding plate 14, a circumferential groove 34 incorporated and on the outer edge 141 facing surface of the bar 32 has a protruding, circumferential Spring 35 is formed, which is pressed positively and non-positively into the groove 34.

Claims (10)

  1. Portable electric sander, in particular an eccentric sander, having a sanding plate (14), on the underside of which an abrasive holder (23) of soft material is held, characterized in that the sanding plate (14) has encircling edge protection which bears against the outer surface (231) of the abrasive holder (23) and is designed as a protective member (30) which protrudes beyond the outer contour of the abrasive holder (23) in the sanding plate plane.
  2. Portable electric sander according to Claim 1, characterized in that the protective member (30) at least partly overlaps the abrasive holder (23) on its outer surface (231).
  3. Portable electric sander according to Claim 1 or 2, characterized in that the protective member (30) is a one-piece component of the sanding plate (14).
  4. Portable electric sander according to Claims 2 and 3, characterized in that the protective member (30) is an encircling angle piece (31) which is integrally formed on the outside of the sanding plate (14) and which projects axially with one leg (311) beyond the underside, accommodating the abrasive holder (23), of the sanding plate (14).
  5. Portable electric sander according to Claim 4, characterized in that the sanding plate (14) is injection-moulded from plastic and the angle piece (31) is injection-moulded along with the leg (311) during the injection moulding process.
  6. Portable electric sander according to Claim 1 or 2, characterized in that the protective member (30) is an encircling strip (32) fastened to the sanding plate (14).
  7. Portable electric sander according to Claims 2 and 6, characterized in that the strip (32) has an axially extending, encircling web (321) projecting beyond the underside, accommodating the abrasive holder (23), of the sanding plate (14).
  8. Portable electric sander according to Claim 6 or 7, characterized in that the strip (32) is made of an elastic material.
  9. Portable electric sander according to one of Claims 6 to 8, characterized in that the strip (32) is clipped onto the outer margin (141) of the sanding plate (14).
  10. Portable electric sander according to Claim 9, characterized in that the clipped connection between strip (32) and sanding plate (14) consists of an encircling groove (34), incorporated in the outer margin (141) of the sanding plate (14), and of an encircling tongue (35) which is integrally formed on the inner side, facing the outer surface (131), of the strip (32) and plunges into the groove (34) in a frictional and positive-locking manner.
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
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
DE10126675 2001-06-01
PCT/DE2002/001475 WO2002098607A1 (en) 2001-06-01 2002-04-23 Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection

Publications (2)

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

Family

ID=7686859

Family Applications (1)

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

Country Status (6)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20031745A1 (en) * 2003-09-11 2005-03-12 Guido Valentini PAD WITH DEFLECTOR FOR SURFACE MACHINING.
DE102006061634A1 (en) * 2006-12-27 2008-07-03 Robert Bosch Gmbh Eccentric grinder, has friction brake device with friction surface that stands perpendicularly to rotation axis of grinding disk that exhibits course, which is sloping outwards from inner side in radial direction
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB486785A (en) * 1936-12-10 1938-06-10 Sterling Products Company Improvement in a rubbing machine
SE362583B (en) * 1972-03-07 1973-12-17 Electrolux Ab
US4616449A (en) * 1984-08-31 1986-10-14 Miksa Marton Suction housing for vacuum sanding devices
US5018314A (en) * 1989-06-08 1991-05-28 Makita Electric Works, Ltd. Sander
DE4125795C1 (en) * 1991-08-03 1993-02-11 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
DE4226741C2 (en) * 1992-08-13 1994-08-04 Atlas Copco Elektrowerkzeuge Hand-held grinding machine, especially an eccentric grinding machine
US5445558A (en) * 1994-07-20 1995-08-29 Hutchins Manufacturing Company Wet sander
DE19708086A1 (en) 1997-02-28 1998-09-03 Elmotec Elektro Motoren Tech Device for pulling coils into slots in stator laminations of electrical machines
DE20023967U1 (en) * 2000-03-14 2008-02-28 Robert Bosch Gmbh Electric hand grinder, in particular eccentric grinder
DE20016263U1 (en) * 2000-09-20 2001-10-18 Kolthoff & Co Backing pad for surface finishing tools

Also Published As

Publication number Publication date
US6857949B2 (en) 2005-02-22
EP1397228A1 (en) 2004-03-17
CN1462224A (en) 2003-12-17
WO2002098607A1 (en) 2002-12-12
US20030148719A1 (en) 2003-08-07
DE50212325D1 (en) 2008-07-10
CN1231329C (en) 2005-12-14
DE10126675A1 (en) 2002-12-05
JP2004519352A (en) 2004-07-02

Similar Documents

Publication Publication Date Title
EP1318892B1 (en) Abrasive body and abrasive means for an electric grinding tool and electric grinding tool
EP2086720B1 (en) Electric hand-held machine tool for carrying out grinding work, in particular an orbital sander
EP1397228B1 (en) Electric portable grinding machine, particularly an eccentric grinder, provided with edge protection
DE10012243A1 (en) Electric hand grinding machine, especially eccentric grinder, has plate-shaped grinding material bearer attached to grinding plate by reversibly adhering surfaces
WO2018188870A1 (en) Grinding means device, in particular grinding-disc device or backup-pad device
EP0112405A1 (en) Attaching element to be employed in grinding and polishing machines
DE102012216556A1 (en) Holding body for flexible abrasive, grinding system and grinder
DE4118392B4 (en) Random Orbit Sander
DE102005062459B4 (en) hand grinder
CA2097379A1 (en) On Edge Honing Devices
EP0180080A1 (en) Abrasive or polishing disc
DE19750283A1 (en) Suction device for hand-held tool device
DE10028128A1 (en) Hand tool, in particular concrete grinder
DE102017213747A1 (en) Protective device for a hand tool machine
DE10144274A1 (en) sanding plate
DE10357143A1 (en) Grinding assembly for an electric hand tool machine
EP0836543B1 (en) Hand-operated orbital sander
DE102006025068A1 (en) Saw blade with cover for oscillation drive
DE10354653A1 (en) Sanding pad for a hand grinder
DE29913046U1 (en) Grinding wheel
DE20010081U1 (en) Instrument for machining workpieces and materials
DE102006047007A1 (en) Disc grinder grinding plate, has channel for fixture of grinding material by vacuum normal to grinding plane
US20230211465A1 (en) Abrasive for the production of a grinding tool, grinding tool and method for operating a grinding tool of this type
JP2837972B2 (en) Saw and its components
DE29922974U1 (en) Grinding machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REICH, DORIS

Inventor name: BERGNER, JOAO

Inventor name: WUENSCH, STEFFEN

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCINTILLA AG, DIREKTION

REF Corresponds to:

Ref document number: 50212325

Country of ref document: DE

Date of ref document: 20080710

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090303

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20130423

Year of fee payment: 12

Ref country code: GB

Payment date: 20130422

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20130523

Year of fee payment: 12

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140423

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20141231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140430

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140423

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170623

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50212325

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181101