EP2143531A1 - Tool with an attachment opening for form-fit connection with different oscillating actuatable drive shafts - Google Patents

Tool with an attachment opening for form-fit connection with different oscillating actuatable drive shafts Download PDF

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Publication number
EP2143531A1
EP2143531A1 EP09008109A EP09008109A EP2143531A1 EP 2143531 A1 EP2143531 A1 EP 2143531A1 EP 09008109 A EP09008109 A EP 09008109A EP 09008109 A EP09008109 A EP 09008109A EP 2143531 A1 EP2143531 A1 EP 2143531A1
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EP
European Patent Office
Prior art keywords
tool
protrusions
drive shaft
opening
positive connection
Prior art date
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Granted
Application number
EP09008109A
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German (de)
French (fr)
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EP2143531B1 (en
Inventor
Uwe Früh
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C&E Fein GmbH and Co
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C&E Fein GmbH and Co
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Publication of EP2143531A1 publication Critical patent/EP2143531A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors

Definitions

  • the invention relates to a tool having a mounting opening for the positive connection with a first oscillating drivable drive shaft having a first raised mounting portion having a plurality of outwardly leading convex protrusions each having a rounded tip and concavely rounded side edges.
  • the invention further relates to a tool having a fastening opening for the positive connection with a second oscillating drivable drive shaft, which has a second fastening portion with a plurality of approximately trapezoidal or rectangular formed arranged on a circular line raised positive locking elements.
  • a tool of the former kind is from the US Pat. No. 6,945,862 B2 known.
  • a raised mounting portion is provided on an oscillating drivable drive shaft of an oscillating drive on which a total of four outwardly from a circular line convex protrusions are each provided with a rounded tip and concave rounded side edges ,
  • a tool with a mounting opening can be placed positively, having correspondingly shaped recesses.
  • a tool having a mounting opening for positive connection with a second oscillating drivable drive shaft, wherein the second oscillating drivable drive shaft has a second raised mounting portion on which a total of twelve trapezoidal, raised, on a circular line in are provided at regular angular intervals mutually arranged positive locking elements.
  • a second raised mounting portion on which a total of twelve trapezoidal, raised, on a circular line in are provided at regular angular intervals mutually arranged positive locking elements.
  • corresponding recesses are provided which are adapted to the shape.
  • an angular adjustability of the tool relative to the drive shaft is made possible.
  • the tools provided for the various drive shafts are each provided with corresponding attachment openings which are adapted to the shapes of the various attachment portions of the drive shafts.
  • the object of the present invention is to provide a tool with a mounting hole, which is suitable for positive connection with both drive shafts.
  • a tool having a fastening opening for the positive connection with an oscillating drivable drive shaft, wherein the fastening opening has a plurality of outwardly projecting projections, each having an outer convex portion which merges into concave side edges on both sides, and wherein adjacent side flanks converge toward a common outwardly concave protrusion toward the central axis of the attachment opening, the shape of the outwardly protruding protrusions, the side flanks and the protrusions being configured such that optionally a positive connection with a first raised attachment portion of a first drive shaft is possible, which has a plurality of outwardly leading convex protrusions each having a rounded tip and concave rounded side edges, and that optionally a positive V connection with a second attachment portion of a second drive shaft is made possible, having a plurality on a circular line at regular angular intervals to each other arranged raised form-fitting elements, wherein the raised form-fitting elements
  • a tool according to the invention can namely be connected both to a first drive shaft by placing it on its attachment portion, which has a plurality of outwardly leading convex elevations each with a rounded tip and concave rounded side edges, as well as a enable positive connection with a second drive shaft, wherein the second attachment portion has a plurality of arranged on a circular line at regular angular intervals to each other, raised form-fitting elements.
  • the outer ends of the projections and the inner ends of the bulges each lie on a concentric to the central axis circle.
  • the attachment opening is preferably formed symmetrically with respect to its central axis.
  • the number of projections of the attachment opening carries an integer multiple of the number of convex elevations of the first attachment portion and the number of trapezoidal interlocking elements of the second attachment portion.
  • the tool can be twisted fastened in even smaller increments on the drive shaft, as by the number of convex elevations of first fastening portion or the number of trapezoidal form-fitting elements of the second fastening portion is predetermined.
  • the number of projections of the attachment opening may be twelve and the number of convex elevations or trapezoidal form-fitting elements may be three, four, six or twelve.
  • the attachment opening is formed as a punched opening.
  • the tool may be formed in a preferred embodiment of the invention, for example, as a grinding tool, cutting tool or sawing tool.
  • Fig. 1 an exemplary embodiment of a tool according to the invention is shown in perspective and designated overall by the numeral 10.
  • the tool 10 has a triangular working surface 12 with rounded tips and convex outer edges extending therebetween.
  • the work surface 12 may be directly coated with an abrasive material or be formed for attachment of a sandpaper disc corresponding shape and size.
  • an angled portion 14 In the middle of the work surface is an angled portion 14, within which a mounting opening 16 is sunk opposite the working surface 12.
  • the mounting opening 16 has a total of twelve outwardly projecting projections 20, each having an outer convex portion 22, which merges into concave side edges 24 on both sides. In this case, adjacent side edges 24 run together in the direction of the central axis 18 of the fastening opening 16 towards a common outwardly concave recess 26. There are the outer ends of the convex portions 22 and the inner ends of the concave protrusions 26 each on concentric to the central axis 18 of the mounting hole 16 concentric circles.
  • the attachment opening 16 is generally symmetrical with respect to the central axis 18.
  • Fig. 2 is an associated first drive shaft 30 of an oscillation drive ( Fig. 4 ) with a raised first attachment portion 38 according to the US Pat. No. 6,945,862 B2 shown.
  • the about its longitudinal axis 32 according to the arrow 34 oscillating drivable drive shaft 30 has a flange 36 for abutment of the tool 10.
  • the tool 10 can be placed with its attachment opening 16 on the mounting portion 38, so that there is a positive connection.
  • a fastening screw 72 is used, for example, according to Fig. 4 can be screwed into a corresponding threaded bore 46 of the drive shaft 30, the sunk the mounting screw 72 is received within the bend 14.
  • the attachment portion 38 has, as shown in US Pat. No. 6,945,862 known, a total of four outwardly of a circle convex protrusions 40 each having a rounded tip 42 and concavely rounded side edges 44.
  • the shape of the attachment opening 16 of the tool 10 is now matched to the shape of the attachment portion 38 of the first drive shaft 30, that a positive reception is ensured thereon. Since the attachment opening 16 has a total of 12 projections 20, while the attachment portion 38 of the first drive shaft 4 has projections 40, the tool can be mounted in twelve different angular positions on the drive shaft 36, which are each offset by 30 ° to each other.
  • Fig. 3 is a second drive shaft of a second oscillation drive designated overall by numeral 50. Also, this drive shaft is assigned by their Oscillation drive about its longitudinal axis 52 oscillating drivable, as indicated by the double arrow 54. Also on this, a flange 56 is provided, on which a fastening portion 58 is formed.
  • the attachment portion here has a total of twelve arranged on a concentric to the central axis 52 circular line interlocking elements 60, which are formed for example trapezoidal and projecting upwardly raised (they can of course in principle also have a round cross-section or other cross-sectional shape).
  • attachment openings 16 of the tool 10 is now designed such that the tool 10 can be accommodated as an alternative to a mounting on the first drive shaft 30 on the second drive shaft 50 and is held in a form-fitting manner at its attachment opening 16.
  • a threaded bore 46 serves to receive a screw for fixing the tool 10 on the drive shaft 50.
  • attachment portion 58 of the second drive shaft 50 is in detail from the DE 10 2004 050 798 A1 removable, which is incorporated by reference.
  • the oscillation drive 70 is an oscillation drive basically known type, which puts its drive shaft 30 in rapid oscillations about the longitudinal axis 32 of the drive shaft 30, with a frequency of eg 5000 to 30,000 oscillations per minute and a low pivot angle of, for example, 0.5 to 5 degrees.
  • Such an oscillation drive can with a drive shaft 30 according to Fig. 2 or with a drive shaft 50 according to Fig. 3 be equipped.
  • a tool with a fastening opening 16 according to the invention can optionally be placed on different oscillation drives which are connected to the first drive shaft 30 or are equipped with the second drive shaft 50. In both cases, a positive connection is guaranteed.

Abstract

The tool has a mounting opening (16) for form-fit connection with a drive shaft actuated in oscillatory manner, where the mounting opening has multiple projections (20) running outwards. The projections have an outer convex section (22), which passes over the concave side flanges (24) at both sides. The adjacent side flanges run together in direction of a central axis (18) of the mounting opening to a common outward concave salient.

Description

Die Erfindung betrifft ein Werkzeug mit einer Befestigungsöffnung zur formschlüssigen Verbindung mit einer ersten oszillierend antreibbaren Antriebswelle, die einen ersten erhabenen Befestigungsabschnitt aufweist, der eine Mehrzahl von nach außen vorlaufenden konvexen Erhebungen jeweils mit einer abgerundeten Spitze und konkav gerundeten Seitenflanken aufweist.The invention relates to a tool having a mounting opening for the positive connection with a first oscillating drivable drive shaft having a first raised mounting portion having a plurality of outwardly leading convex protrusions each having a rounded tip and concavely rounded side edges.

Die Erfindung betrifft ferner ein Werkzeug mit einer Befestigungsöffnung zur formschlüssigen Verbindung mit einer zweiten oszillierend antreibbaren Antriebswelle, die einen zweiten Befestigungsabschnitt mit einer Mehrzahl von etwa trapezförmig oder rechteckförmig ausgebildeten auf einer Kreislinie angeordneten erhabenen Formschlusselementen aufweist.The invention further relates to a tool having a fastening opening for the positive connection with a second oscillating drivable drive shaft, which has a second fastening portion with a plurality of approximately trapezoidal or rectangular formed arranged on a circular line raised positive locking elements.

Ein Werkzeug der erst genannten Art ist aus der US 6 945 862 B2 bekannt.A tool of the former kind is from the US Pat. No. 6,945,862 B2 known.

Gemäß dieser Druckschrift, die hier vollständig durch Bezugnahme eingeschlossen wird, ist an einer oszillierend antreibbaren Antriebswelle eines Oszillationsantriebes ein erhabener Befestigungsabschnitt vorgesehen, an dem insgesamt vier von einer Kreislinie aus nach außen vorlaufende konvexe Erhebungen jeweils mit einer abgerundeten Spitze und mit konkav gerundeten Seitenflanken vorgesehen sind.According to this document, which is incorporated herein by reference in its entirety, a raised mounting portion is provided on an oscillating drivable drive shaft of an oscillating drive on which a total of four outwardly from a circular line convex protrusions are each provided with a rounded tip and concave rounded side edges ,

Auf einen derartigen Befestigungsabschnitt kann ein Werkzeug mit einer Befestigungsöffnung formschlüssig aufgesetzt werden, die entsprechend geformte Ausnehmungen aufweist.On such a mounting portion, a tool with a mounting opening can be placed positively, having correspondingly shaped recesses.

Ferner ist aus der DE 10 2004 050 798 A1 , die gleichfalls vollständig durch Bezugnahme eingeschlossen wird, ein Werkzeug mit einer Befestigungsöffnung zur formschlüssigen Verbindung mit einer zweiten oszillierend antreibbaren Antriebswelle bekannt, wobei die zweite oszillierend antreibbare Antriebswelle einen zweiten erhabenen Befestigungsabschnitt aufweist, an dem insgesamt zwölf trapezförmig ausgebildete, erhabene, auf einer Kreislinie in regelmäßigen Winkelabständen zueinander angeordnete Formschlusselemente vorgesehen sind. In einem zugeordneten Werkzeug, was auf diesem Befestigungsabschnitt befestigt werden soll, sind entsprechende Ausnehmungen vorgesehen, die auf die Form abgestimmt sind. Auch hierbei ist eine winkelmäßige Verstellbarkeit des Werkzeugs relativ zur Antriebswelle ermöglicht.Furthermore, from the DE 10 2004 050 798 A1 , which is also incorporated by reference in its entirety, a tool having a mounting opening for positive connection with a second oscillating drivable drive shaft, wherein the second oscillating drivable drive shaft has a second raised mounting portion on which a total of twelve trapezoidal, raised, on a circular line in are provided at regular angular intervals mutually arranged positive locking elements. In an associated tool, which is to be mounted on this mounting portion, corresponding recesses are provided which are adapted to the shape. Here too, an angular adjustability of the tool relative to the drive shaft is made possible.

Die für die verschiedenen Antriebswellen vorgesehenen Werkzeuge sind jeweils mit entsprechenden Befestigungsöffnungen versehen, die auf die Formen der verschiedenen Befestigungsabschnitte der Antriebswellen abgestimmt sind.The tools provided for the various drive shafts are each provided with corresponding attachment openings which are adapted to the shapes of the various attachment portions of the drive shafts.

Somit müssen für die verschiedenen Antriebswellen jeweils verschiedene Werkzeuge vorgehalten werden.Thus, different tools must be maintained for the different drive shafts.

Die Aufgabe der vorliegenden Erfindung besteht nun darin, ein Werkzeug mit einer Befestigungsöffnung anzugeben, die zur formschlüssigen Verbindung mit beiden Antriebswellen geeignet ist.The object of the present invention is to provide a tool with a mounting hole, which is suitable for positive connection with both drive shafts.

Diese Aufgabe wird durch ein Werkzeug mit einer Befestigungsöffnung zur formschlüssigen Verbindung mit einer oszillierend antreibbaren Antriebswelle gelöst, wobei die Befestigungsöffnung eine Mehrzahl von nach außen vorlaufenden Vorsprüngen aufweist, die jeweils einen äußeren konvexen Abschnitt aufweisen, der an beiden Seiten jeweils in konkave Seitenflanken übergeht, und wobei benachbarte Seitenflanken in Richtung zur Mittelachse der Befestigungsöffnung hin zu einer gemeinsamen nach außen konkaven Ausbuchtung zusammenlaufen, wobei die Form der nach außen hervorstehenden Vorsprünge, der Seitenflanken und der Ausbuchtungen derart ausgebildet ist, dass wahlweise eine formschlüssige Verbindung mit einem ersten erhabenen Befestigungsabschnitt einer ersten Antriebswelle ermöglicht ist, der einer Mehrzahl von nach außen vorlaufenden konvexen Erhebungen jeweils mit einer abgerundeten Spitze und konkav gerundeten Seitenflanken aufweist, und dass wahlweise eine formschlüssige Verbindung mit einem zweiten Befestigungsabschnitt einer zweiten Antriebswelle ermöglicht ist, der eine Mehrzahl auf einer Kreislinie in regelmäßigen Winkelabständen zueinander angeordneten erhabenen Formschlusselementen aufweist, wobei die erhabenen Formschlusselemente vorzugsweise trapezförmig oder rechteckförmig ausgebildet sind.This object is achieved by a tool having a fastening opening for the positive connection with an oscillating drivable drive shaft, wherein the fastening opening has a plurality of outwardly projecting projections, each having an outer convex portion which merges into concave side edges on both sides, and wherein adjacent side flanks converge toward a common outwardly concave protrusion toward the central axis of the attachment opening, the shape of the outwardly protruding protrusions, the side flanks and the protrusions being configured such that optionally a positive connection with a first raised attachment portion of a first drive shaft is possible, which has a plurality of outwardly leading convex protrusions each having a rounded tip and concave rounded side edges, and that optionally a positive V connection with a second attachment portion of a second drive shaft is made possible, having a plurality on a circular line at regular angular intervals to each other arranged raised form-fitting elements, wherein the raised form-fitting elements are preferably formed trapezoidal or rectangular.

Die Aufgabe der Erfindung wird auf diese Weise vollkommen gelöst.The object of the invention is completely solved in this way.

Ein erfindungsgemäßes Werkzeug lässt sich nämlich sowohl mit einer ersten Antriebswelle durch Aufsetzen auf deren Befestigungsabschnitt verbinden, die eine Mehrzahl von nach außen vorlaufenden konvexen Erhebungen jeweils mit einer abgerundeten Spitze und konkav gerundeten Seitenflanken aufweist, als auch eine formschlüssige Verbindung mit einer zweiten Antriebswelle ermöglichen, wobei der zweite Befestigungsabschnitt eine Mehrzahl von auf einer Kreislinie in regelmäßigen Winkelabständen zueinander angeordneten, erhabenen Formschlusselementen aufweist.A tool according to the invention can namely be connected both to a first drive shaft by placing it on its attachment portion, which has a plurality of outwardly leading convex elevations each with a rounded tip and concave rounded side edges, as well as a enable positive connection with a second drive shaft, wherein the second attachment portion has a plurality of arranged on a circular line at regular angular intervals to each other, raised form-fitting elements.

Auf diese Weise lässt sich ein einziges Werkzeug sowohl zur formschlüssigen Verbindung mit der ersten Antriebswelle als auch zur formschlüssigen Verbindung mit der zweiten Antriebswelle verwenden.In this way, a single tool can be used both for positive connection with the first drive shaft and for positive connection with the second drive shaft.

Auf diese Weise ergeben sich deutlich größere Stückzahlen für die betreffenden Werkzeuge, so dass sich entsprechende Kosteneinsparungen ergeben und auf die Herstellung und den Vertrieb von verschiedenen Werkzeugen für denselben Zweck für die verschiedenen Antriebswellen verzichtet werden kann.In this way, significantly larger quantities for the tools in question, so that there are corresponding cost savings and can be dispensed with the production and distribution of different tools for the same purpose for the various drive shafts.

Auf diese Weise ergeben sich erhebliche Kosteneinsparungen und Logistikeinsparungen.This results in significant cost savings and logistics savings.

Gemäß einer weiteren Ausgestaltung der Erfindung liegen die äußeren Enden der Vorsprünge und die inneren Enden der Ausbuchtungen jeweils auf einem zur Mittelachse konzentrischen Kreis.According to a further embodiment of the invention, the outer ends of the projections and the inner ends of the bulges each lie on a concentric to the central axis circle.

Hierbei ist die Befestigungsöffnung vorzugsweise bezüglich ihrer Mittelachse symmetrisch ausgebildet.Here, the attachment opening is preferably formed symmetrically with respect to its central axis.

Auf diese Weise ist eine formschlüssige Verbindung mit beiden bekannten Befestigungssystemen ermöglicht.In this way, a positive connection with both known fastening systems is possible.

Gemäß einer weiteren Ausgestaltung der Erfindung trägt die Anzahl der Vorsprünge der Befestigungsöffnung ein ganzzahliges Vielfaches der Anzahl der konvexen Erhebungen des ersten Befestigungsabschnitts und der Anzahl der trapezförmigen Formschlusselemente des zweiten Befestigungsabschnitts.According to a further embodiment of the invention, the number of projections of the attachment opening carries an integer multiple of the number of convex elevations of the first attachment portion and the number of trapezoidal interlocking elements of the second attachment portion.

Auf diese Weise ist eine winkelmäßige Verstellung des Werkzeuges bezüglich der Antriebswelle ermöglicht. Sofern die Anzahl der Vorsprünge der Befestigungsöffnung ein Mehrfaches der Anzahl der konvexen Erhebungen des ersten Befestigungsabschnitts oder der Anzahl der trapezförmigen Formschlusselemente des zweiten Befestigungsabschnittes beträgt, lässt sich das Werkzeug in noch kleineren Inkrementen auf der Antriebswelle verdreht befestigen, als durch die Anzahl der konvexen Erhebungen des ersten Befestigungsabschnitts oder die Anzahl der trapezförmigen Formschlusselemente des zweiten Befestigungsabschnitts vorgegeben ist.In this way, an angular displacement of the tool with respect to the drive shaft is made possible. If the number of protrusions of the attachment opening is a multiple of the number of convexities of the first attachment portion or the number of trapezoidal interlocking elements of the second attachment portion, the tool can be twisted fastened in even smaller increments on the drive shaft, as by the number of convex elevations of first fastening portion or the number of trapezoidal form-fitting elements of the second fastening portion is predetermined.

Hierbei kann beispielsweise die Anzahl der Vorsprünge der Befestigungsöffnung zwölf sein und die Anzahl der konvexen Erhebungen oder der trapezförmigen Formschlusselemente drei, vier, sechs oder zwölf betragen.In this case, for example, the number of projections of the attachment opening may be twelve and the number of convex elevations or trapezoidal form-fitting elements may be three, four, six or twelve.

Gemäß einer weiteren Ausführung der Erfindung ist die Befestigungsöffnung als Stanzöffnung ausgebildet.According to a further embodiment of the invention, the attachment opening is formed as a punched opening.

Auf diese Weise ist eine einfache und kostengünstige Herstellung der Befestigungsöffnung ermöglicht.In this way, a simple and cost-effective production of the attachment opening is made possible.

Das Werkzeug kann in bevorzugter Ausgestaltung der Erfindung beispielsweise als Schleifwerkzeug, Schneidwerkzeug oder Sägewerkzeug ausgebildet sein.The tool may be formed in a preferred embodiment of the invention, for example, as a grinding tool, cutting tool or sawing tool.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale der Erfindung nicht nur in der jeweils angegeben Kombination sondern auch in anderen Kombinationen oder in Alleinstellung der Erfindung verwendbar sind, ohne den Rahmen der Erfindung zu verlassen.It is understood that the features of the invention to be explained below and those to be explained below can be used not only in the respectively indicated combination but also in other combinations or in isolation of the invention, without departing from the scope of the invention.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele unter Bezugnahme auf die Zeichnung. Es zeigen:

Fig. 1
eine perspektivische Ansicht einer beispielhaften Ausführung eines Werk- zeuges mit einer erfindungsgemäßen Befestigungsöffnung;
Fig. 2
eine perspektivische Ansicht einer ersten Antriebswelle eines Oszilla- tionsantriebs mit einem erhabenen Befestigungsabschnitt, der zur form- schlüssigen Verbindung mit der Befestigungsöffnung des Werkzeuges ge- mäß Fig. 1 ausgebildet ist;
Fig. 3
eine perspektivische Ansicht einer zweiten Antriebswelle eines zweiten Oszillationsantriebs mit einem Befestigungsabschnitt, mit dem die Befesti- gungsöffnung des Werkzeuges gemäß Fig. 1 gleichfalls formschlüssig ver- bindbar ist und
Fig. 4
eine schematische Seitenansicht eines Oszillationsantriebs mit einer An- triebswelle gemäß Fig. 2 und darauf befestigten Werkzeug gemäß Fig. 1.
Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings. Show it:
Fig. 1
a perspective view of an exemplary embodiment of a tool with a mounting opening according to the invention;
Fig. 2
a perspective view of a first drive shaft of an oscillatory drive with a raised mounting portion, which according to the positive connection with the mounting opening of the tool Fig. 1 is trained;
Fig. 3
a perspective view of a second drive shaft of a second oscillating drive with a mounting portion, with the fastening opening of the tool according to Fig. 1 can also be positively connected and
Fig. 4
a schematic side view of an oscillation drive with a drive shaft according to Fig. 2 and attached tool according to Fig. 1 ,

In Fig. 1 ist eine beispielhafte Ausführung eines erfindungsgemäßen Werkzeuges perspektivisch dargestellt und insgesamt mit der Ziffer 10 bezeichnet. Im dargestellten Fall weist das Werkzeug 10 eine dreieckförmige Arbeitsfläche 12 mit abgerundeten Spitzen und sich dazwischen erstreckenden konvexen Außenkanten auf. Die Arbeitsfläche 12 kann unmittelbar mit einem Schleifmaterial beschichtet sein oder zur Befestigung einer Schleifpapierscheibe entsprechender Form und Größe ausgebildet sein. In der Mitte der Arbeitsfläche befindet sich eine Abkröpfung 14, innerhalb der eine Befestigungsöffnung 16 gegenüber der Arbeitsfläche 12 versenkt aufgenommen ist.In Fig. 1 an exemplary embodiment of a tool according to the invention is shown in perspective and designated overall by the numeral 10. In the illustrated case, the tool 10 has a triangular working surface 12 with rounded tips and convex outer edges extending therebetween. The work surface 12 may be directly coated with an abrasive material or be formed for attachment of a sandpaper disc corresponding shape and size. In the middle of the work surface is an angled portion 14, within which a mounting opening 16 is sunk opposite the working surface 12.

Die Befestigungsöffnung 16 weist insgesamt zwölf nach außen vorlaufende Vorsprünge 20 auf, die jeweils einen äußeren konvexen Abschnitt 22 aufweisen, der an beiden Seiten jeweils in konkave Seitenflanken 24 übergeht. Dabei laufen benachbarte Seitenflanken 24 in Richtung zur Mittelachse 18 der Befestigungsöffnung 16 hin zu einer gemeinsamen nach außen konkaven Ausbuchtung 26 zusammen. Dabei liegen die äußeren Enden der konvexen Abschnitte 22 und die inneren Enden der konkaven Ausbuchtungen 26 jeweils auf zur Mittelachse 18 der Befestigungsöffnung 16 konzentrischen Kreisen. Die Befestigungsöffnung 16 ist insgesamt symmetrisch bezüglich der Mittelachse 18.The mounting opening 16 has a total of twelve outwardly projecting projections 20, each having an outer convex portion 22, which merges into concave side edges 24 on both sides. In this case, adjacent side edges 24 run together in the direction of the central axis 18 of the fastening opening 16 towards a common outwardly concave recess 26. There are the outer ends of the convex portions 22 and the inner ends of the concave protrusions 26 each on concentric to the central axis 18 of the mounting hole 16 concentric circles. The attachment opening 16 is generally symmetrical with respect to the central axis 18.

In Fig. 2 ist eine zugeordnete erste Antriebswelle 30 eines Oszillationsantriebs (Fig. 4) mit einem erhabenen ersten Befestigungsabschnitt 38 gemäß der US 6 945 862 B2 dargestellt. Die um ihre Längsachse 32 gemäß dem Pfeil 34 oszillierend antreibbare Antriebswelle 30 weist einen Flansch 36 zur Anlage des Werkzeugs 10 auf. Hierbei kann das Werkzeug 10 mit seiner Befestigungsöffnung 16 auf dem Befestigungsabschnitt 38 aufgesetzt werden, so dass sich eine formschlüssige Verbindung ergibt.In Fig. 2 is an associated first drive shaft 30 of an oscillation drive ( Fig. 4 ) with a raised first attachment portion 38 according to the US Pat. No. 6,945,862 B2 shown. The about its longitudinal axis 32 according to the arrow 34 oscillating drivable drive shaft 30 has a flange 36 for abutment of the tool 10. Here, the tool 10 can be placed with its attachment opening 16 on the mounting portion 38, so that there is a positive connection.

Zur Sicherung wird beispielsweise eine Befestigungsschraube 72 verwendet, die gemäß Fig. 4 derart in eine entsprechende Gewindebohrung 46 der Antriebswelle 30 einschraubbar ist, das die Befestigungsschraube 72 versenkt innerhalb der Abkröpfung 14 aufgenommen ist.To secure a fastening screw 72 is used, for example, according to Fig. 4 can be screwed into a corresponding threaded bore 46 of the drive shaft 30, the sunk the mounting screw 72 is received within the bend 14.

Der Befestigungsabschnitt 38 weist, wie aus der US 6 945 862 bekannt, insgesamt vier von einem Kreis nach außen vorlaufende konvexe Erhebungen 40 jeweils mit einer abgerundeten Spitze 42 und konkav gerundeten Seitenflanken 44 auf.The attachment portion 38 has, as shown in US Pat. No. 6,945,862 known, a total of four outwardly of a circle convex protrusions 40 each having a rounded tip 42 and concavely rounded side edges 44.

Die Form der Befestigungsöffnung 16 des Werkzeugs 10 ist nun derart auf die Form des Befestigungsabschnitts 38 der ersten Antriebswelle 30 abgestimmt, dass eine formschlüssige Aufnahme darauf gewährleistet ist. Da die Befestigungsöffnung 16 insgesamt 12 Vorsprünge 20 aufweist, während der Befestigungsabschnitt 38 der ersten Antriebswelle 4 Erhebungen 40 aufweist, kann das Werkzeug in zwölf verschiedenen Winkelstellungen auf der Antriebswelle 36 befestigt werden, die jeweils um 30° zueinander versetzt sind.The shape of the attachment opening 16 of the tool 10 is now matched to the shape of the attachment portion 38 of the first drive shaft 30, that a positive reception is ensured thereon. Since the attachment opening 16 has a total of 12 projections 20, while the attachment portion 38 of the first drive shaft 4 has projections 40, the tool can be mounted in twelve different angular positions on the drive shaft 36, which are each offset by 30 ° to each other.

In Fig. 3 ist eine zweite Antriebswelle eines zweiten Oszillationsantriebs insgesamt mit Ziffer 50 bezeichnet. Auch diese Antriebswelle ist von ihrem zugeordneten Oszillationsantrieb um ihre Längsachse 52 oszillierend antreibbar, wie durch den Doppelpfeil 54 angedeutet ist. Auch hieran ist ein Flansch 56 vorgesehen, auf dem ein Befestigungsabschnitt 58 ausgebildet ist. Der Befestigungsabschnitt weist hierbei insgesamt zwölf auf einer zur Mittelachse 52 konzentrischen Kreislinie angeordnete Formschlusselemente 60 auf, die z.B. trapezförmig ausgebildet sind und nach oben erhaben hervorstehen (sie können natürlich grundsätzlich auch einen runden Querschnitt oder eine sonstige Querschnittsform haben).In Fig. 3 is a second drive shaft of a second oscillation drive designated overall by numeral 50. Also, this drive shaft is assigned by their Oscillation drive about its longitudinal axis 52 oscillating drivable, as indicated by the double arrow 54. Also on this, a flange 56 is provided, on which a fastening portion 58 is formed. The attachment portion here has a total of twelve arranged on a concentric to the central axis 52 circular line interlocking elements 60, which are formed for example trapezoidal and projecting upwardly raised (they can of course in principle also have a round cross-section or other cross-sectional shape).

Die Form der Befestigungsöffnungen 16 des Werkzeugs 10 ist nun derart ausgebildet, dass das Werkzeug 10 alternativ zu einer Befestigung auf der ersten Antriebswelle 30 auch auf der zweiten Antriebswelle 50 aufgenommen werden kann und dabei formschlüssig an seiner Befestigungsöffnung 16 gehalten ist. Auch hierbei dient eine Gewindebohrung 46 zur Aufnahme einer Schraube zur Fixierung des Werkzeugs 10 auf der Antriebswelle 50.The shape of the attachment openings 16 of the tool 10 is now designed such that the tool 10 can be accommodated as an alternative to a mounting on the first drive shaft 30 on the second drive shaft 50 and is held in a form-fitting manner at its attachment opening 16. Here, too, a threaded bore 46 serves to receive a screw for fixing the tool 10 on the drive shaft 50.

Form und Ausgestaltung des Befestigungsabschnitts 58 der zweiten Antriebswelle 50 ist im Einzelnen aus der DE 10 2004 050 798 A1 entnehmbar, die durch Bezugnahme eingeschlossen wird.Form and configuration of the attachment portion 58 of the second drive shaft 50 is in detail from the DE 10 2004 050 798 A1 removable, which is incorporated by reference.

Bei dem Oszillationsantrieb 70 gemäß Fig. 4 handelt es sich um einen Oszillationsantrieb grundsätzlich bekannter Bauart, der seine Antriebswelle 30 in schnelle Oszillationen um die Längsachse 32 der Antriebswelle 30 versetzt, mit einer Frequenz von z.B. 5000 bis 30000 Oszillationen pro Minute und einem geringen Verschwenkwinkel von z.B. 0,5 bis 5 Grad.In the oscillation drive 70 according to Fig. 4 it is an oscillation drive basically known type, which puts its drive shaft 30 in rapid oscillations about the longitudinal axis 32 of the drive shaft 30, with a frequency of eg 5000 to 30,000 oscillations per minute and a low pivot angle of, for example, 0.5 to 5 degrees.

Ein derartiger Oszillationsantrieb kann mit einer Antriebswelle 30 gemäß Fig. 2 oder mit einer Antriebswelle 50 gemäß Fig. 3 ausgestattet sein.Such an oscillation drive can with a drive shaft 30 according to Fig. 2 or with a drive shaft 50 according to Fig. 3 be equipped.

Ein Werkzeug mit einer erfindungsgemäßen Befestigungsöffnung 16 lässt sich wahlweise auf verschiedene Oszillationsantriebe aufsetzen, die mit der ersten Antriebswelle 30 oder mit der zweiten Antriebswelle 50 ausgestattet sind. In beiden Fällen ist eine formschlüssige Verbindung gewährleistet.A tool with a fastening opening 16 according to the invention can optionally be placed on different oscillation drives which are connected to the first drive shaft 30 or are equipped with the second drive shaft 50. In both cases, a positive connection is guaranteed.

Claims (7)

Werkzeug mit einer Befestigungsöffnung (16) zur formschlüssigen Verbindung mit einer oszillierend antreibbaren Antriebswelle (30, 50), wobei die Befestigungsöffnung (16) eine Mehrzahl von nach außen vorlaufenden Vorsprüngen (20) aufweist, die jeweils einen äußeren konvexen Abschnitt (22) aufweisen, der an beiden Seiten jeweils in konkave Seitenflanken (24) übergeht, und wobei benachbarte Seitenflanken (24) in Richtung zur Mittelachse (18) der Befestigungsöffnung (16) hin zu einer gemeinsamen nach außen konkaven Ausbuchtung (26) zusammenlaufen, wobei die Form der nach außen hervorstehenden Vorsprünge (20), der Seitenflanken (24) und der Ausbuchtungen (26) derart ausgebildet ist, dass wahlweise eine formschlüssige Verbindung mit einem ersten erhabenen Befestigungsabschnitt (38) einer ersten Antriebswelle (30) ermöglicht ist, der eine Mehrzahl von nach außen vorlaufenden konvexen Erhebungen (40) jeweils mit einer abgerundeten Spitze (42) und konkav gerundeten Seitenflanken (44) aufweist, und dass wahlweise eine formschlüssige Verbindung mit einem zweiten Befestigungsabschnitt (58) einer zweiten Antriebswelle (50) ermöglicht ist, der eine Mehrzahl von auf einer Kreislinie in regelmäßigen Winkelabständen zueinander angeordneten, erhabenen Formschlusselementen (60) aufweist.Tool having a fastening opening (16) for positive connection to an oscillatory drivable drive shaft (30, 50), wherein the fastening opening (16) has a plurality of outwardly projecting projections (20) each having an outer convex portion (22), merging into concave side flanks (24) on both sides, and adjacent side flanks (24) converging towards the central axis (18) of the attachment opening (16) towards a common concave outward concavity (26), the shape of outwardly projecting protrusions (20), the side flanks (24) and the protrusions (26) are formed such that optionally a positive connection with a first raised mounting portion (38) of a first drive shaft (30) is enabled, a plurality of outwardly leading convex protrusions (40) each having a rounded tip (42) and concavely rounded side edges (44), and that optionally a positive connection with a second mounting portion (58) of a second drive shaft (50) is made possible, having a plurality of arranged on a circular line at regular angular intervals to each other, raised form-locking elements (60). Werkzeug nach Anspruch 1, bei dem die Form der nach außen hervorstehenden Vorsprünge (20), der Seitenflanken (24) und der Ausbuchtungen (26) derart ausgebildet ist, dass eine formschlüssige Verbindung mit einem zweiten Befestigungsabschnitt (58) einer zweiten Antriebswelle (50) ermöglicht ist, der eine Mehrzahl von auf einer Kreislinie angeordneten, erhabenen, trapezförmig oder rechteckförmig ausgebildeten Formschlusselementen (60) aufweist.The tool of claim 1, wherein the shape of the outwardly projecting protrusions (20), the side flanks (24) and the protrusions (26) is formed such that a positive connection with a second mounting portion (58) of a second drive shaft (50). which has a plurality of arranged on a circular line, raised, trapezoidal or rectangular shaped positive-locking elements (60). Werkzeug nach Anspruch 1 oder 2, bei dem die äußeren Enden der Vorsprünge (20) und die inneren Enden der Ausbuchtungen (26) jeweils auf einem zur Mittelachse (18) konzentrischen Kreis liegen.A tool according to claim 1 or 2, wherein the outer ends of the protrusions (20) and the inner ends of the protrusions (26) each lie on a circle concentric with the central axis (18). Werkzeug nach einem der vorhergehenden Ansprüche, bei dem die Anzahl (N) der Vorsprünge (20) der Befestigungsöffnung (16) ein ganzzahliges Vielfaches der Anzahl (n1) der konvexen Erhebungen (40) des ersten Befestigungsabschnitts (38) und der Anzahl (n2) der Formschlusselemente (60) des zweiten Befestigungsabschnittes (58) beträgt.A tool as claimed in any one of the preceding claims, wherein the number (N) of protrusions (20) of the mounting aperture (16) is an integer multiple of the number (n 1 ) of the convexes (40) of the first attachment portion (38) and the number (n 2 ) of the positive locking elements (60) of the second fastening portion (58). Werkzeug nach Anspruch 4, bei dem die Anzahl (N) der Vorsprünge (20) der Befestigungsöffnung 12 ist und die Anzahl (n1) der konvexen Erhebungen (40) 3, 4, 6 oder 12 ist, und die Anzahl (n2) der Formschlusselemente (60) 3, 4, 6 oder 12 ist.A tool according to claim 4, wherein the number (N) of the protrusions (20) of the attachment opening is 12 and the number (n 1 ) of the convex protrusions (40) is 3, 4, 6 or 12, and the number (n 2 ) the interlocking elements (60) is 3, 4, 6 or 12. Werkzeug nach einem der vorhergehenden Ansprüche, bei dem die Befestigungsöffnung (16) als Stanzöffnung ausgebildet ist.Tool according to one of the preceding claims, wherein the fastening opening (16) is formed as a punched opening. Werkzeug nach einem der vorhergehenden Ansprüche, das als Schleifwerkzeug, Schabewerkzeug, Schneidwerkzeug oder Sägewerkzeug ausgebildet ist.Tool according to one of the preceding claims, which is designed as a grinding tool, scraping tool, cutting tool or sawing tool.
EP09008109.2A 2008-07-08 2009-06-20 System with two different drive shafts and with a tool with an attachment opening for form-fit connection with the drive shafts Not-in-force EP2143531B1 (en)

Applications Claiming Priority (1)

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DE202008009525U DE202008009525U1 (en) 2008-07-08 2008-07-08 Tool with a mounting hole for positive connection with various oscillating drivable drive shafts

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EP2143531A1 true EP2143531A1 (en) 2010-01-13
EP2143531B1 EP2143531B1 (en) 2017-07-26

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US (1) US20100009613A1 (en)
EP (1) EP2143531B1 (en)
CN (1) CN101623862B (en)
DE (1) DE202008009525U1 (en)

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US10792801B2 (en) 2012-07-16 2020-10-06 Black & Decker Inc. Oscillating power tools and accessories
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USD924030S1 (en) 2017-01-16 2021-07-06 Black & Decker Inc. Blade for oscillating power tools
US10702927B2 (en) 2017-01-16 2020-07-07 Black & Decker Inc. Accessories for oscillating power tools
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US10265778B2 (en) 2017-01-16 2019-04-23 Black & Decker Inc. Accessories for oscillating power tools

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US20100009613A1 (en) 2010-01-14
DE202008009525U1 (en) 2009-11-19
CN101623862A (en) 2010-01-13
CN101623862B (en) 2011-09-07
EP2143531B1 (en) 2017-07-26

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