EP1849561A2 - Hand tool device with adjustable handles - Google Patents

Hand tool device with adjustable handles Download PDF

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Publication number
EP1849561A2
EP1849561A2 EP07106500A EP07106500A EP1849561A2 EP 1849561 A2 EP1849561 A2 EP 1849561A2 EP 07106500 A EP07106500 A EP 07106500A EP 07106500 A EP07106500 A EP 07106500A EP 1849561 A2 EP1849561 A2 EP 1849561A2
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EP
European Patent Office
Prior art keywords
handles
hand tool
outer housing
tool according
handle
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
EP07106500A
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German (de)
French (fr)
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EP1849561A3 (en
EP1849561B1 (en
Inventor
Stefan Schmid
Stefan Hammerstingl
Elisabeth Lind
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Hilti AG
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Hilti AG
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Publication of EP1849561A2 publication Critical patent/EP1849561A2/en
Publication of EP1849561A3 publication Critical patent/EP1849561A3/en
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Publication of EP1849561B1 publication Critical patent/EP1849561B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/005—Adjustable tool components; Adjustable parameters

Definitions

  • the invention relates to an example, as a stand-up tool, that is primarily for a vertically downwardly directed operation in upright standing of the operator trained beating hand tool, especially in the form of an electro-pneumatic drill chisel hammer.
  • This has for loading a tool holder with impact energy along a working direction to a drive assembly having a drive, in particular in the form of an electric motor, optionally a gear and a motion converter in the form of a percussion mechanism.
  • the drive assembly is at least partially housed in an outer housing.
  • handles are provided on opposite sides of the outer housing, which are for adjusting a handle height, relative to the tool holder in different positions can be fixed, the handle height is defined by the parallel to the working direction distance of the handles to a tip of a held in the tool holder tool.
  • Such adjustable handles allow an adaptation of the hand tool or its handle height to the respective body size of a serving person, to the respective local conditions or to different applications.
  • a striking machine having a hammer mechanism in a machine housing, wherein the machine housing is partially surrounded by a protective housing.
  • a holding rod is provided, which is held on the machine housing via two flanges, which protrude through the protective housing, and vibration damping means.
  • two handles are provided on opposite sides of the support rod.
  • several mounting holes are provided on both sides of the linkage, where the handles can be screwed either optionally.
  • the known percussion machine in this way allows operators with different body size each a comfortable hold during operation.
  • the present invention has for its object to avoid the disadvantages mentioned in a hand tool and to make a comfortable person, situation or a ratesbache change the handle height of the handles.
  • the object is achieved in that the handles are mounted displaceably relative to the tool holder between a plurality of positions and can be locked in a selected position.
  • the displaceable mounting of the handles allows a more comfortable adjustment of the handle height.
  • the handles can thereby be held captive on the power tool.
  • a guide for the displaceable handles is provided on the drive assembly in this case.
  • a housing of the drive assembly or an intermediate carrier, which is held fixed or vibration-reducing to the drive assembly, serve as a direct or indirect guidance of the handles.
  • the guide is formed by a vibration-reducing on the drive assembly held intermediate carrier.
  • the vibration-reducing suspension can be formed for example by spring elements. This makes it possible, in addition to the Adjustability of the handle height to ensure a low-vibration operation of the power tool.
  • the two handles on a fixed connection, whereby they are adjusted and fixed together. In this way, it is ensured that both handles at any time have a matching handle height. In addition, the means for determining this can be reduced.
  • the fixed connection is formed by a permanent connection of both handles with the outer housing.
  • the handles can be formed integrally with the outer housing at least in partial areas of its outer side.
  • the outer housing can be formed almost completely closed, whereby a defective penetration of dirt and dust in the power tool can be prevented.
  • locking means between the fixed connection of the handles and the drive assembly are provided for locking the handles in a selected position.
  • the arrangement of the locking means on the fixed connection thereby causes both handles are determined by the same locking means, whereby the manufacturing cost of these can be reduced.
  • the locking means on a plurality of drive-side locking receptacles, into which a handle-side locking body in an active position for producing a positive connection at least partially protrudes.
  • a particularly stable fixing of the handles relative to the drive arrangement can be achieved.
  • the locking body is formed by an eccentric element which is adjustable by means of a handle between the active position and a passive position in which the form-fitting is canceled.
  • the lock can be solved quickly and without tools to restore them in a new position of the handles just as quickly and without tools can.
  • the single FIGURE shows a hand tool 2 in the form of an electro-pneumatically operated chisel hammer.
  • the hand tool 2 is designed as a stand-up tool, wherein it is supported in operation via a tool 4 in the vertical direction on a substrate 6 to be processed and is usually held by a non-illustrated operator is substantially vertically aligned.
  • the hand tool 2 has an outer housing 8, in which a generally designated 10 drive assembly is partially housed. This has an electrically operated motor 12, a gear 14 and a striking mechanism 16. This impact mechanism 16 acts on a tool holder 20, which is held on a guide tube 18 and in which the tool 4 is held, in the direction of a working direction R.
  • An intermediate carrier 22 is held on the drive arrangement 10 via a vibration-reducing device 24, which is shown schematically as a spring.
  • This intermediate carrier 22 acts as a guide relative to the outer housing 8, which is held parallel to the working direction R of the power tool 2 displaceable on the intermediate carrier 22.
  • the outer housing 8 may also be guided directly through a housing portion of the drive assembly 10.
  • both handles 30 protrudes on a first side 26 and on a side facing away from this second side 28 of the outer housing 8 in each case a handle 30 protrudes. Both handles 30 in this case have a surface 32 which is produced in one piece with the outer housing 8, for example in a common die-casting process. In this way, both handles 30 are fixedly connected to one another via the outer housing 8 and mounted on the intermediate carrier 22 so as to be displaceable together.
  • a total of 34 designated locking means are provided on the first side 26 of the outer housing 8 between this and the intermediate carrier 22, by means of which the outer housing 8 on the intermediate carrier 22 and thus also with respect to the drive assembly 10 can be fixed. Because of the fixed connection of the two handles 30 with the outer housing 8, it is sufficient to provide locking means 34 only in one area, as here on the first side 26, since these two handles 30 are fixed at the same time.
  • the distance between the handles 30 and the tool holder 20 and thus an effective operating H handle height can be adjusted, resulting from the parallel to the direction R working distance of the handles 30 to a tip 36 of the tool 4.
  • the locking means 34 have on the intermediate carrier 22 a plurality of in the working direction R successively arranged locking receptacles 38.
  • an eccentric member 40 is rotatably mounted, on which an eccentric cam is formed, which acts as a locking body 42.
  • the eccentric member 40 via a handle 44 between an illustrated active position in which the locking body 42 projects into one of the locking receptacles 38, and a dash-dotted illustrated passive position in which the eccentric member 40 is not engaged with any of the locking receptacles 38, adjustable.
  • the handles 30 are fixed by means of the locking means 34 in a position in which the handle height H has a minimum value. If you want to adapt the device, for example, to a body size of the operator, to specific local conditions or a particular type of application that requires a greater handle height H, the eccentric 40 is moved by operation of the handle 44 in the passive position. Subsequently, the outer housing 8 can be moved to a new position relative to the intermediate carrier 22, which corresponds to a desired new handle height Hn, as illustrated by arrow S and two-dotted dashed line.
  • the eccentric element 40 is then pivoted by means of the handle 44 back into the active position in which the locking means 34 again produce a parallel to the working direction R positive connection between the outer housing 8 and the intermediate carrier 22 to the new relative Position of the handles 30 against the drive assembly 10 and the tool holder 20 to secure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The apparatus (2) has a drive arrangement (10) for striking admission of a tool retainer (20) along an operating direction (R), and an outer housing (8) in which the drive arrangement is partially accommodated. Two adjustable handles (30) are provided at sides (26, 28) of the outer housing and are fixed in different positions for adjusting the gripping height (H) opposite to the tool retainer. The handles are movably supported between a number of positions opposite to the tool retainer, and are fixed in the selected position. A guide for the handles is provided at the drive arrangement.

Description

Die Erfindung betrifft ein beispielsweise als stand-up-tool, das heisst vorrangig für einen vertikal nach unten gerichteten Betrieb bei aufrechtem Stehen des Bedieners ausgebildetes schlagendes Handwerkzeuggerät, insbesondere in Form eines elektropneumatischen Bohroder Meisselhammers. Dieses weist zur Beaufschlagung einer Werkzeugaufnahme mit Schlagenergie entlang einer Arbeitsrichtung eine Antriebsanordnung auf, die einen Antrieb, insbesondere in Form eines Elektromotors, gegebenenfalls ein Getriebe sowie einen Bewegungswandler in Form eines Schlagmechanismus aufweist. Hierbei ist die Antriebsanordnung zumindest teilweise in einem Aussengehäuse untergebracht. Ferner sind an voneinander abgewandten Seiten des Aussengehäuse zwei Handgriffe vorgesehen, die zur Verstellung einer Griffhöhe, gegenüber der Werkzeugaufnahme in verschiedenen Positionen festlegbar sind, wobei die Griffhöhe durch den zur Arbeitsrichtung parallelen Abstand der Handgriffe zu einer Spitze eines in der Werkzeugaufnahme gehaltenen Werkzeuges definiert ist.The invention relates to an example, as a stand-up tool, that is primarily for a vertically downwardly directed operation in upright standing of the operator trained beating hand tool, especially in the form of an electro-pneumatic drill chisel hammer. This has for loading a tool holder with impact energy along a working direction to a drive assembly having a drive, in particular in the form of an electric motor, optionally a gear and a motion converter in the form of a percussion mechanism. Here, the drive assembly is at least partially housed in an outer housing. Furthermore, two handles are provided on opposite sides of the outer housing, which are for adjusting a handle height, relative to the tool holder in different positions can be fixed, the handle height is defined by the parallel to the working direction distance of the handles to a tip of a held in the tool holder tool.

Derartige verstellbare Handgriffe ermöglichen eine Anpassung des Handwerkzeuggerätes beziehungsweise dessen Griffhöhe an die jeweilige Körpergrösse einer bedienenden Person, an die jeweiligen örtlichen Gegebenheiten oder an unterschiedliche Anwendungen.Such adjustable handles allow an adaptation of the hand tool or its handle height to the respective body size of a serving person, to the respective local conditions or to different applications.

Aus der EP 0 837 757 B1 ist eine Schlagmaschine bekannt, die in einem Maschinengehäuse einen Hammermechanismus aufweist, wobei das Maschinengehäuse teilweise von einem Schutzgehäuse umgeben ist. Dabei ist ein Haltegestänge vorgesehen, das über zwei Flansche, die durch das Schutzgehäuse hindurch ragen, und vibrationsdämpfende Mittel an dem Maschinengehäuse gehalten ist. An gegenüber liegenden Seiten des Haltegestänges sind zudem zwei Haltegriffe vorgesehen. Um die Höhe, die die Griffe im Betrieb einnehmen, an unterschiedliche Grössen der Bediener anzupassen, sind an beiden Seiten des Gestänges mehrere Befestigungslöcher vorgesehen, an denen die Handgriffe jeweils wahlweise festgeschraubt werden können.From the EP 0 837 757 B1 is known a striking machine having a hammer mechanism in a machine housing, wherein the machine housing is partially surrounded by a protective housing. In this case, a holding rod is provided, which is held on the machine housing via two flanges, which protrude through the protective housing, and vibration damping means. On opposite sides of the support rod also two handles are provided. In order to adapt the height, which occupy the handles in operation, to different sizes of the operator, several mounting holes are provided on both sides of the linkage, where the handles can be screwed either optionally.

Die bekannte Schlagmaschine ermöglicht auf diese Weise Bedienern mit unterschiedlicher Körpergrösse jeweils ein komfortables Halten im Betrieb.The known percussion machine in this way allows operators with different body size each a comfortable hold during operation.

Nachteilig an der bekannten Schlagmaschine ist jedoch, dass zur Verstellung der beiden Handgriffe die jeweilige Schraubverbindung mit dem Haltegestänge erst gelöst und in der neuen Stellung wieder hergestellt werden muss. Dabei ist es auch erforderlich, dass dem Bediener das entsprechende Werkzeug zur Verfügung steht. Zudem besteht die Gefahr, dass die beiden Handgriffe versehentlich eine unterschiedliche Griffhöhe aufweisen.A disadvantage of the known impact machine, however, that the adjustment of the two handles, the respective screw with the support rod first dissolved and must be restored in the new position. It is also necessary that the appropriate tool is available to the operator. In addition, there is a risk that the two handles accidentally have a different handle height.

Ferner ist durch das federnd am Maschinengehäuse gehaltene und das Schutzgehäuse durchragende Haltegestänge die Gefahr gegeben, dass sich der Bediener zwischen dem Haltegestänge und den entsprechenden Öffnungen des Schutzgehäuses einklemmt beziehungsweise, dass durch diese Öffnungen Schmutz eindringt und die Arbeitsweise der Schlagmaschine beeinträchtigt.Further, by the resiliently held on the machine housing and the protective housing projecting through the support rods there is a risk that the operator pinched between the support rod and the corresponding openings of the protective housing or that penetrates through these openings dirt and affects the operation of the impact machine.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, bei einem Handwerkzeuggerät die genannten Nachteile zu vermeiden und in komfortabler Weise eine personen-, situations- oder aplikationsbedingte Änderung der Griffhöhe der Handgriffe vorzunehmen.The present invention has for its object to avoid the disadvantages mentioned in a hand tool and to make a comfortable person, situation or aplikationsbedingte change the handle height of the handles.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die Handgriffe gegenüber der Werkzeugaufnahme zwischen mehreren Positionen verschiebbar gelagert und in einer gewählten Position arretierbar sind. Die verschiebbare Lagerung der Handgriffe ermöglicht dabei eine komfortablere Verstellung der Griffhöhe. Zudem können die Handgriffe hierdurch unverlierbar am Handwerkzeuggerät gehalten werden.According to the invention, the object is achieved in that the handles are mounted displaceably relative to the tool holder between a plurality of positions and can be locked in a selected position. The displaceable mounting of the handles allows a more comfortable adjustment of the handle height. In addition, the handles can thereby be held captive on the power tool.

Vorteilhafterweise ist an der Antriebsanordnung hierbei eine Führung für die verschiebbaren Handgriffe vorgesehen. Dabei kann beispielsweise ein Gehäuse der Antriebsanordnung oder ein Zwischenträger, der fest oder vibrationsmindernd an der Antriebsanordnung gehalten ist, als direkte oder indirekte Führung der Handgriffe dienen. Durch diese Anordnung der Führung an der Antriebsanordnung wird im Betrieb ein guter Kraftfluss zwischen der Antriebsanordnung und den Handgriffen gewährleistet, was einen guten Durchgriff der bedienenden Person auf das Handwerkzeuggerät ermöglicht.Advantageously, a guide for the displaceable handles is provided on the drive assembly in this case. In this case, for example, a housing of the drive assembly or an intermediate carrier, which is held fixed or vibration-reducing to the drive assembly, serve as a direct or indirect guidance of the handles. By this arrangement, the guide on the drive assembly, a good power flow between the drive assembly and the handles is ensured during operation, which allows a good penetration of the operator on the hand tool.

Bevorzugterweise ist die Führung durch einen an der Antriebsanordnung vibrationsmindernd gehaltenen Zwischenträger gebildet. Die vibrationsmindernde Aufhängung kann dabei beispielsweise durch Federelemente gebildet werden. Hierdurch ist es möglich, neben der Verstellbarkeit der Griffhöhe auch einen vibrationsarmen Betrieb des Handwerkzeuggerätes zu gewährleisten.Preferably, the guide is formed by a vibration-reducing on the drive assembly held intermediate carrier. The vibration-reducing suspension can be formed for example by spring elements. This makes it possible, in addition to the Adjustability of the handle height to ensure a low-vibration operation of the power tool.

Bevorzugterweise weisen die beiden Handgriffe eine feste Verbindung auf, wodurch sie gemeinsam verstellt und festgelegt werden. Auf diese Weise ist gewährleistet, dass beide Handgriffe jederzeit eine übereinstimmende Griffhöhe aufweisen. Zudem können die Mittel zur Festlegung hierdurch reduziert werden.Preferably, the two handles on a fixed connection, whereby they are adjusted and fixed together. In this way, it is ensured that both handles at any time have a matching handle height. In addition, the means for determining this can be reduced.

In einer besonders bevorzugten Ausführungsform ist die feste Verbindung durch eine permanente Verbindung beider Handgriffe mit dem Aussengehäuse gebildet. Beispielsweise können die Handgriffe zumindest in Teilbereichen ihrer Aussenseite einteilig mit dem Aussengehäuse ausgebildet sein. Hierdurch kann das Aussengehäuse nahezu vollständig geschlossen ausgebildet werden, wodurch ein schadhaftes Eindringen von Schmutz und Staub in das Handwerkzeuggerät verhindert werden kann.In a particularly preferred embodiment, the fixed connection is formed by a permanent connection of both handles with the outer housing. For example, the handles can be formed integrally with the outer housing at least in partial areas of its outer side. As a result, the outer housing can be formed almost completely closed, whereby a defective penetration of dirt and dust in the power tool can be prevented.

Vorteilhafterweise sind zur Arretierung der Handgriffe in einer gewählten Position Arretierungsmittel zwischen der festen Verbindung der Handgriffe und der Antriebsanordnung vorgesehen. Die Anordnung der Arretierungsmittel an der festen Verbindung bewirkt dabei, dass beide Handgriffe durch die selben Arretierungsmittel festgelegt werden, wodurch die Herstellungskosten für diese vermindert werden können.Advantageously, locking means between the fixed connection of the handles and the drive assembly are provided for locking the handles in a selected position. The arrangement of the locking means on the fixed connection thereby causes both handles are determined by the same locking means, whereby the manufacturing cost of these can be reduced.

Bevorzugterweise weisen die Arretierungsmittel mehrere antriebsseitige Arretierungsaufnahmen auf, in die ein handgriffseitiger Arretierungskörper in einer Aktivstellung zur Herstellung eines Formschlusses wenigstens teilweise hinein ragt. Hierdurch kann eine besonders stabile Festlegung der Handgriffe gegenüber der Antriebsanordnung erzielt werden.Preferably, the locking means on a plurality of drive-side locking receptacles, into which a handle-side locking body in an active position for producing a positive connection at least partially protrudes. In this way, a particularly stable fixing of the handles relative to the drive arrangement can be achieved.

Vorteilhafterweise ist der Arretierungskörper dabei durch ein Exzenterelement gebildet, das mittels einer Handhabe zwischen der Aktivstellung und einer Passivstellung verstellbar ist, in der der Formschluss aufgehoben ist. Hierdurch kann die Arretierung schnell und werkzeugfrei gelöst werden, um sie in einer neuen Position der Handgriffe genauso schnell und werkzeugfrei wieder herstellen zu können.Advantageously, the locking body is formed by an eccentric element which is adjustable by means of a handle between the active position and a passive position in which the form-fitting is canceled. As a result, the lock can be solved quickly and without tools to restore them in a new position of the handles just as quickly and without tools can.

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

Fig.
eine teilweise geschnittene Ansicht eines erfindungsgemässen Handwerkzeuggerätes.
The invention will be explained in more detail below with reference to an embodiment. Show it:
FIG.
a partially sectioned view of an inventive hand tool.

Die einzige Fig. zeigt ein Handwerkzeuggerät 2 in Form eines elektropneumatisch betriebenen Meisselhammers. Das Handwerkzeuggerät 2 ist als stand-up-tool ausgebildet, wobei es sich im Betrieb über eine Werkzeug 4 in vertikaler Richtung an einem zu bearbeitenden Untergrund 6 abstützt und von einem nicht dargestellten Bediener üblicherweise im Wesentlichen vertikal ausgerichtet gehalten wird.The single FIGURE shows a hand tool 2 in the form of an electro-pneumatically operated chisel hammer. The hand tool 2 is designed as a stand-up tool, wherein it is supported in operation via a tool 4 in the vertical direction on a substrate 6 to be processed and is usually held by a non-illustrated operator is substantially vertically aligned.

Das Handwerkzeuggerät 2 weist ein Aussengehäuse 8 auf, in dem eine insgesamt mit 10 bezeichnete Antriebsanordnung teilweise untergebracht ist. Diese weist einen elektrisch betriebenen Motor 12, ein Getriebe 14 und einen Schlagmechanismus 16 auf. Dieser Schlagmechanismus 16 beaufschlagt eine an einem Führungsrohr 18 gehaltene Werkzeugaufnahme 20, in der das Werkzeug 4 gehalten ist, in Richtung einer Arbeitsrichtung R.The hand tool 2 has an outer housing 8, in which a generally designated 10 drive assembly is partially housed. This has an electrically operated motor 12, a gear 14 and a striking mechanism 16. This impact mechanism 16 acts on a tool holder 20, which is held on a guide tube 18 and in which the tool 4 is held, in the direction of a working direction R.

An der Antriebsanordnung 10 ist ein Zwischenträger 22 über eine schematisch als Feder dargestellte Vibrationsminderungseinrichtung 24 gehalten. Dieser Zwischenträger 22 fungiert als eine Führung gegenüber dem Aussengehäuse 8, das parallel zur Arbeitsrichtung R des Handwerkzeuggerätes 2 verschiebbar am Zwischenträger 22 gehalten ist. Alternativ hierzu kann das Aussengehäuse 8 auch direkt durch einen Gehäusebereich der Antriebsanordnung 10 geführt sein.An intermediate carrier 22 is held on the drive arrangement 10 via a vibration-reducing device 24, which is shown schematically as a spring. This intermediate carrier 22 acts as a guide relative to the outer housing 8, which is held parallel to the working direction R of the power tool 2 displaceable on the intermediate carrier 22. Alternatively, the outer housing 8 may also be guided directly through a housing portion of the drive assembly 10.

An einer ersten Seite 26 und an einer von dieser abgewandten zweiten Seite 28 des Aussengehäuses 8 ragt jeweils ein Handgriff 30 ab. Beide Handgriffe 30 weisen hierbei eine Oberfläche 32 auf, die einteilig mit dem Aussengehäuse 8 hergestellt ist, beispielsweise in einem gemeinsamen Druckgussverfahren. Auf diese Weise sind beide Handgriffe 30 über das Aussengehäuse 8 fest miteinander verbunden und über dieses gemeinsam verschiebbar am Zwischenträger 22 gelagert.On a first side 26 and on a side facing away from this second side 28 of the outer housing 8 in each case a handle 30 protrudes. Both handles 30 in this case have a surface 32 which is produced in one piece with the outer housing 8, for example in a common die-casting process. In this way, both handles 30 are fixedly connected to one another via the outer housing 8 and mounted on the intermediate carrier 22 so as to be displaceable together.

Ferner sind an der ersten Seite 26 des Aussengehäuses 8 zwischen diesem und dem Zwischenträger 22 insgesamt mit 34 bezeichnete Arretierungsmittel vorgesehen, mittels denen das Aussengehäuse 8 am Zwischenträger 22 und somit auch gegenüber der Antriebsanordnung 10 festlegbar ist. Wegen der festen Verbindung beider Handgriffe 30 mit dem Aussengehäuse 8 reicht es dabei aus, lediglich in einem Bereich, wie hier an der ersten Seite 26, Arretierungsmittel 34 vorzusehen, da durch diese beide Handgriffe 30 gleichzeitig festgelegt werden.Furthermore, a total of 34 designated locking means are provided on the first side 26 of the outer housing 8 between this and the intermediate carrier 22, by means of which the outer housing 8 on the intermediate carrier 22 and thus also with respect to the drive assembly 10 can be fixed. Because of the fixed connection of the two handles 30 with the outer housing 8, it is sufficient to provide locking means 34 only in one area, as here on the first side 26, since these two handles 30 are fixed at the same time.

Mittels der Arretierungsmittel 34 kann der Abstand zwischen den Handgriffen 30 und der Werkzeugaufnahme 20 und damit auch eine im Betrieb wirksame Griffhöhe H eingestellt werden, die sich aus dem zur Arbeitsrichtung R parallelen Abstand der Handgriffe 30 zu einer Spitze 36 des Werkzeuges 4 ergibt.By means of the locking means 34, the distance between the handles 30 and the tool holder 20 and thus an effective operating H handle height can be adjusted, resulting from the parallel to the direction R working distance of the handles 30 to a tip 36 of the tool 4.

Die Arretierungsmittel 34 weisen an dem Zwischenträger 22 mehrere in Arbeitsrichtung R hintereinander angeordnete Arretierungsaufnahmen 38 auf. Am Aussengehäuse 8 ist ein Exzenterelement 40 verdrehbar gelagert, an dem ein Exzenternocken ausgeformt ist, der als Arretierungskörper 42 fungiert. Hierzu ist das Exzenterelement 40 über eine Handhabe 44 zwischen einer dargestellten Aktivstellung, in der der Arretierungskörper 42 in eine der Arretierungsaufnahmen 38 hinein ragt, und einer strichpunktiert dargestellten Passivstellung, in der das Exzenterelement 40 mit keiner der Arretierungsaufnahmen 38 in Eingriff steht, verstellbar.The locking means 34 have on the intermediate carrier 22 a plurality of in the working direction R successively arranged locking receptacles 38. On the outer housing 8, an eccentric member 40 is rotatably mounted, on which an eccentric cam is formed, which acts as a locking body 42. For this purpose, the eccentric member 40 via a handle 44 between an illustrated active position in which the locking body 42 projects into one of the locking receptacles 38, and a dash-dotted illustrated passive position in which the eccentric member 40 is not engaged with any of the locking receptacles 38, adjustable.

In der Fig. sind die Handgriffe 30 mittels der Arretierungsmittel 34 in einer Position festgelegt, in der die Griffhöhe H einen minimalen Wert aufweist. Will man das Gerät beispielsweise an eine Körpergrösse der bedienenden Person, an bestimmte örtliche Gegebenheiten oder eine bestimmte Anwendungsart anpassen, die eine grössere Griffhöhe H erfordert, so wird das Exzenterelement 40 durch Betätigung der Handhabe 44 in die Passivstellung verbracht. Anschliessend kann das Aussengehäuse 8 in eine neue Position relativ zum Zwischenträger 22 verschoben werden, die einer gewünschten neuen Griffhöhe Hn entspricht, wie durch Pfeil S und zweifach punktiert gestrichelte Linie veranschaulicht.In the figure, the handles 30 are fixed by means of the locking means 34 in a position in which the handle height H has a minimum value. If you want to adapt the device, for example, to a body size of the operator, to specific local conditions or a particular type of application that requires a greater handle height H, the eccentric 40 is moved by operation of the handle 44 in the passive position. Subsequently, the outer housing 8 can be moved to a new position relative to the intermediate carrier 22, which corresponds to a desired new handle height Hn, as illustrated by arrow S and two-dotted dashed line.

In dieser neuen Position mit Griffhöhe Hn, wird dann das Exzenterelement 40 mittels der Handhabe 44 wieder in die Aktivstellung verschwenkt, in der die Arretierungsmittel 34 wieder einen parallel zur Arbeitsrichtung R wirksamen Formschluss zwischen dem Aussengehäuse 8 und dem Zwischenträger 22 herstellen, um die neue relative Lage der Handgriffe 30 gegenüber der Antriebsanordnung 10 und der Werkzeugaufnahme 20 zu sichern.In this new position with handle height Hn, the eccentric element 40 is then pivoted by means of the handle 44 back into the active position in which the locking means 34 again produce a parallel to the working direction R positive connection between the outer housing 8 and the intermediate carrier 22 to the new relative Position of the handles 30 against the drive assembly 10 and the tool holder 20 to secure.

Claims (8)

Handwerkzeuggerät (2), insbesondere in Form eines Bohr- oder Meisselhammers,
mit einer Antriebsanordnung (10) zur schlagenden Beaufschlagung einer Werkzeugaufnahme (20) entlang einer Arbeitsrichtung (R),
einem Aussengehäuse (8), in dem die Antriebsanordnung (10) zumindest teilweise aufgenommen ist,
und zwei Handgriffen (30), die an voneinander abgewandten Seiten (26, 28) des Aussengehäuses (8) vorgesehen sind und die zur Verstellung einer Griffhöhe (H) gegenüber der Werkzeugaufnahme (20) in verschiedenen Positionen festlegbar sind,
dadurch gekennzeichnet, dass die Handgriffe (30) gegenüber der Werkzeugaufnahme (20) zwischen mehreren Positionen verschiebbar gelagert und in diesen Positionen festlegbar sind.Hand tool (2), in particular in the form of a drill or chisel hammer,
with a drive arrangement (10) for striking a tool receptacle (20) along a working direction (R),
an outer housing (8) in which the drive arrangement (10) is at least partially accommodated,
and two handles (30) which are provided on opposite sides (26, 28) of the outer housing (8) and which are adjustable for adjusting a handle height (H) relative to the tool holder (20) in different positions,
characterized in that the handles (30) relative to the tool holder (20) are displaceably mounted between a plurality of positions and can be fixed in these positions. Handwerkzeuggerät nach Anspruch 1, dadurch gekennzeichnet, dass an der Antriebsanordnung (10) eine Führung für die verschiebbaren Handgriffe (30) vorgesehen ist.Hand tool according to Claim 1, characterized in that a guide for the displaceable handles (30) is provided on the drive arrangement (10). Handwerkzeuggerät nach Anspruch 2, dadurch gekennzeichnet, dass die Führung durch einen an der Antriebsanordnung (10) vibrationsmindernd gehaltenen Zwischenträger (22) gebildet ist.Hand tool according to claim 2, characterized in that the guide by a on the drive assembly (10) vibration-reducing held intermediate carrier (22) is formed. Handwerkzeuggerät nach Anspruch einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die beiden Handgriffe (30) eine feste Verbindung aufweisen.Hand tool according to one of claims 1 to 3, characterized in that the two handles (30) have a fixed connection. Handwerkzeuggerät nach Anspruch 4, dadurch gekennzeichnet, dass die feste Verbindung durch eine permanente Verbindung beider Handgriffe (30) mit dem Aussengehäuse (8) gebildet ist.Hand tool according to claim 4, characterized in that the fixed connection by a permanent connection of both handles (30) with the outer housing (8) is formed. Handwerkzeuggerät nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass zwischen der festen Verbindung der Handgriffe (30) und der Antriebsanordnung (10) Arretierungsmittel (34) vorgesehen sind.Hand tool according to claim 4 or 5, characterized in that between the fixed connection of the handles (30) and the drive assembly (10) locking means (34) are provided. Handwerkzeuggerät nach Anspruch 6, dadurch gekennzeichnet, dass die Arretierungsmittel (34) mehrere antriebsseitige Arretierungsaufnahmen (38) aufweisen, in die ein handgriffseitiger Arretierungskörper (42) in einer Aktivstellung zur Herstellung eines Formschlusses wenigstens teilweise hinein ragt.Hand tool according to claim 6, characterized in that the locking means (34) has a plurality of drive-side locking receptacles (38) into which a handle-side locking body (42) in an active position for producing a positive connection at least partially protrudes. Handwerkzeuggerät nach Anspruch 7, dadurch gekennzeichnet, dass der Arretierungskörper (42) durch ein Exzenterelement (40) gebildet ist, das mittels einer Handhabe (44) zwischen der Aktivstellung und einer Passivstellung, in der der Formschluss aufgehoben ist, verstellbar ist.Hand tool according to claim 7, characterized in that the locking body (42) by an eccentric element (40) is formed, which is adjustable by means of a handle (44) between the active position and a passive position in which the positive connection is canceled.
EP07106500A 2006-04-28 2007-04-19 Hand tool device with adjustable handles Active EP1849561B1 (en)

Applications Claiming Priority (1)

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DE102006000207A DE102006000207A1 (en) 2006-04-28 2006-04-28 Hand tool with adjustable handles

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EP1849561A3 EP1849561A3 (en) 2010-07-28
EP1849561B1 EP1849561B1 (en) 2011-12-21

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DE (1) DE102006000207A1 (en)

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Also Published As

Publication number Publication date
EP1849561A3 (en) 2010-07-28
US20080099219A1 (en) 2008-05-01
DE102006000207A1 (en) 2007-10-31
EP1849561B1 (en) 2011-12-21

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