EP1621294A2 - Tool handle - Google Patents

Tool handle Download PDF

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Publication number
EP1621294A2
EP1621294A2 EP05106892A EP05106892A EP1621294A2 EP 1621294 A2 EP1621294 A2 EP 1621294A2 EP 05106892 A EP05106892 A EP 05106892A EP 05106892 A EP05106892 A EP 05106892A EP 1621294 A2 EP1621294 A2 EP 1621294A2
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EP
European Patent Office
Prior art keywords
main handle
device housing
hand tool
tool according
movement
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
EP05106892A
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German (de)
French (fr)
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EP1621294A3 (en
EP1621294B1 (en
Inventor
Alexander Funk
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.)
Hilti AG
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Hilti AG
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Publication date
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Publication of EP1621294A2 publication Critical patent/EP1621294A2/en
Publication of EP1621294A3 publication Critical patent/EP1621294A3/en
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Publication of EP1621294B1 publication Critical patent/EP1621294B1/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
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the invention relates to a motor-operated hand tool, in particular an angle grinder, with a device housing which has a tool head on a tool-side end, on which a particular disk-shaped tool can be fixed. At a remote from the tool end end handle side end of the device housing is connected to a main handle. In this case, the main handle relative to the device housing is rotatable about a movement axis.
  • Such hand tool devices can be adjusted by the adjustable main handle on different types of applications by the main handle relative to the device housing is rotated or pivoted.
  • the term main handle is to be understood a handle that, for example, in contrast to a einseztbaren additional side handle, is provided for permanent use on the power tool and is taken at each intended application of the power tool by a hand of the operator.
  • the main handle is held rotatable relative to the motor housing about its longitudinal axis.
  • the motor housing has a bearing neck, on which a turnstile is rotatably held, which is firmly connected to the main handle.
  • a fixing device is provided which causes a positive locking between the motor housing and the turnstile.
  • a disadvantage of the known procedure is that for some applications of the power tool despite the rotatable mounting of the main handle no ergonomically favorable hand position on the main handle is possible. For example, the hand holding the main handle has to be twisted heavily when working in the floor or overhead area. This can lead to excessive impairments and early fatigue of the serving person.
  • the present invention has for its object to avoid the disadvantages mentioned in a hand tool and to allow for a large variety of applications ergonomic hand position on the main handle.
  • the object is achieved in that the main handle in addition to the adjustability about the movement axis has a relation to this adjustable inclination.
  • the main handle in addition to the variable rotational position and the inclination of the main handle relative to the device housing can be changed.
  • an ergonomically favorable hand position can be set on the main handle for many applications of the power tool.
  • the inclination is adjustable by moving the main handle along an arcuate path of movement.
  • the main handle is twisted when laying along the path relative to the device housing.
  • the main handle can be stored very stable.
  • this can be set in particular many different inclination positions between the main handle and the device housing.
  • the arcuate path of movement in each rotational position of the main handle around the axis of motion spans a plane parallel to the axis of motion.
  • the main handle on the one hand about the axis of movement and on the other hand to a perpendicular or virtual fixed axis of rotation adjustable, whereby for almost every conceivable type of application ergonomically favorable hand position on the main handle can be achieved.
  • the arcuate path of movement is defined by a connection arrangement between the device housing and the main handle.
  • the connection arrangement has a sliding bearing on which an arch element is held displaceably.
  • the sheet member can be fixed by a fixing device on the plain bearing. In this way, you can achieve a very stable leadership and determination of the arch element.
  • the main handle is D-shaped and formed the bow member by an arcuate portion of the main handle.
  • a releasable positive connection can be produced, which acts in the direction of the arcuate path of movement. This makes it possible to set the main handle safely and with little play in different positions relative to the device housing.
  • the positive connection can be produced by a biased against the sheet member engaging element of the fixing, which can be laid in one of several recessed on the sheet member engagement recesses. As a result, the positive connection can be produced and removed in a simple manner.
  • the main handle is held rotatable relative to the device housing and can be fixed in a form-fitting manner to the device housing by means of an anti-twist device.
  • the main handle can be fixed in a particularly large number of rotational positions around the movement axis in a stable manner relative to the device housing.
  • the main handle is held on the connection arrangement on a rotatable relative to the device housing bearing element to which a biased against the device housing fuse element is arranged, which is laid in one of several recessed on the device housing securing recesses.
  • Such a bearing element offers many possibilities for a stable and variable fixing of the main handle relative to the device housing.
  • the same means can be used for fixing the bearing element on the device housing as for fixing the arch element on the bearing element. In this way, the manufacturing cost of the power tool can be further reduced.
  • Fig. 1 shows a hand tool 2 in the form of an angle grinder, with a device housing 4.
  • the device housing 4 forms at a tool end of a device head 6, on which a tool holder 8 is provided for receiving a tool 10 in the form of a tool disk.
  • a bearing element 12 is provided, which is held in a rotational direction D about a movement axis B around rotatable on the device housing 4.
  • the movement axis B coincides with the main longitudinal axis of the substantially cylindrical device housing 4.
  • a D-shaped main handle 14 is permanently connected to the device housing 4. This can thus be rotated together with the bearing element 12 about the axis of movement B around in a different rotational position relative to the device housing 4, as shown by the dashed line.
  • the main handle 14 is composed essentially of a straight handle member 16 and an arch member 18 which are integrally formed.
  • the curved element 18 is held displaceably along its longitudinal extension on the bearing element 12, so that the main handle 14 is forcibly guided during displacement along an arcuate path P.
  • the movement path P is aligned such that it spans a plane E, which is always parallel to the movement axis B regardless of the rotational position of the bearing element 12 relative to the device housing 4.
  • the main handle 14 is rotated when moving because of the circular arc-shaped formation of its arc member 18 about a fixed axis of rotation A and thus changes its inclination relative to the device housing 4, as shown in dashed lines.
  • the sheet member 18 may also have a different shape from a continuous arc. In this case, the main handle rotates when shifting by a virtual, i. rotational axis A displaced during the displacement
  • the main handle 14 is held on the sheet member 18 in a guide channel acting as a sliding bearing 22.
  • the guide channel 22 thus forms, together with the arch element 18, a connection arrangement which defines the path of movement P of the main handle 14 relative to the bearing element 12.
  • a fixing device designated generally by 24 is also arranged.
  • the fixing device 24 has an engagement element 26 in the form of a sliding block, which is biased by a spring 28 against the sheet member 18, which is supported on the bearing element 12.
  • the engagement element 26 is engaged in one of a plurality of engagement recesses 30, which are embedded in the arch element 18. In this way, a positive connection between the main handle 14 and the bearing element 12 is achieved in the direction of the movement path P.
  • the engagement element 26 is connected to an externally accessible actuating element 32, via which the engagement element 26 can be moved out of the engagement recess 30 against the force of the spring 28. Subsequently, the sheet member 18 along the movement path P in the guide channel 22 are moved. In this case, the main handle 14 is rotated about the axis of rotation A around in a new tilt position relative to the device housing 4, as shown in phantom in Fig. 1. Once a desired inclination of the handle member 16 relative to the device housing 4, which is ergonomically particularly favorable for a given application of the power tool, is reached, the actuator 32 is released again.
  • the engagement element 26 can engage in a new engagement recess 30 positioned on the fixing device 24 in this position, in order to again fix the main handle 14 to the bearing element 12 in a form-fitting manner.
  • a bearing socket 34 with a collar 36 is formed on the device housing 4.
  • This collar 36 is engaged behind by a circumferentially inwardly projecting edge 38 of the bearing element 12, to allow the rotatable in the direction of rotation D mounting of the bearing element 12 on the device housing 4.
  • an anti-twist device 40 is provided, which substantially corresponds to the fixing device 24, as can be seen from FIG.
  • the anti-rotation device 40 has a securing element 42 in the form of a sliding block, which is biased by a spring 44 against the device housing 4 and thereby engages in one of a plurality of circularly arranged securing recesses 46, which are embedded in the device housing 4.
  • a positive connection between the bearing element 12 and the device housing 4 is generated in the direction of rotation D.
  • a recess 48 is recessed in the surface of the bearing element 12, in which a locking element 42 connected to the unlocking element 50 is displaceable from the outside.
  • the securing element 42 can be moved out of the securing recess 46 against the force of the spring 44.
  • the bearing element 12 can be rotated together with the main handle 14 about the axis of movement B around in a new rotational position relative to the device housing 4 and brought into engagement with another of the securing recesses 46.
  • two arcuate guide grooves 52 are embedded in the sheet member 18, which cooperate with correspondingly shaped guide ribs 54 of the guide channel 22 to ensure a stable guidance and fixing of the main handle 14 relative to the bearing element 12.

Abstract

The power driven tool (2) is equipped with a head (6) at the front of the housing (4) holding the rotating disk (10). A D-shaped handle (14, 16, 18) is attached to a semispherical bearing element (12) which can be rotated around a longitudinal axle (B) in order to adjust the position of the handle (14) to the particular task. The curved segment (18) of the handle (14) can be released by pressing a button and additionally moved along a complementary path (P) located inside the semispherical element (12) adjusting its level of inclination.

Description

Die Erfindung betrifft ein motorisch betriebenes Handwerkzeuggerät, insbesondere ein Winkelschleifgerät, mit einem Gerätegehäuse, das an einem werkzeugseitigen Ende einen Gerätekopf aufweist, an dem ein insbesondere scheibenförmiges Werkzeug festlegbar ist. An einem von dem werkzeugseitigen Ende abgewandten griffseitigen Ende ist das Gerätegehäuse mit einem Haupthandgriff verbunden. Dabei ist der Haupthandgriff gegenüber dem Gerätegehäuse um eine Bewegungsachse herum verdrehbar.The invention relates to a motor-operated hand tool, in particular an angle grinder, with a device housing which has a tool head on a tool-side end, on which a particular disk-shaped tool can be fixed. At a remote from the tool end end handle side end of the device housing is connected to a main handle. In this case, the main handle relative to the device housing is rotatable about a movement axis.

Derartige Handwerkzeuggeräte können durch den verstellbaren Haupthandgriff auf verschiedene Anwendungsarten eingestellt werden, indem der Haupthandgriff gegenüber dem Gerätegehäuse verdreht oder verschwenkt wird. Unter dem Begriff Haupthandgriff ist dabei ein Handgriff zu verstehen, der, beispielsweise im Gegensatz zu einem bedarfsweise einseztbaren zusätzlichen Seitenhandgriff, für eine dauerhafte Verwendung an dem Handwerkzeuggerät vorgesehen ist und bei jeder vorgesehenen Anwendungsart des Handwerkzeuggerätes von einer Hand des Bedieners ergriffen wird.Such hand tool devices can be adjusted by the adjustable main handle on different types of applications by the main handle relative to the device housing is rotated or pivoted. The term main handle is to be understood a handle that, for example, in contrast to a einseztbaren additional side handle, is provided for permanent use on the power tool and is taken at each intended application of the power tool by a hand of the operator.

Aus der DE 41 02 483 ist eine Winkelschleifmaschine bekannt, deren Haupthandgriff relativ zum Motorgehäuse um dessen Längsachse rotierbar gehalten ist. Hierzu weist das Motorgehäuse einen Lagerstutzen auf, an dem ein Drehkreuz verdrehbar gehalten ist, das fest mit dem Haupthandgriff verbunden ist. Ferner ist eine Fixiervorrichtung vorgesehen, die eine formschlüssige Verriegelung zwischen dem Motorgehäuse und dem Drehkreuz bewirkt.From DE 41 02 483 an angle grinder is known, the main handle is held rotatable relative to the motor housing about its longitudinal axis. For this purpose, the motor housing has a bearing neck, on which a turnstile is rotatably held, which is firmly connected to the main handle. Further, a fixing device is provided which causes a positive locking between the motor housing and the turnstile.

Nachteilig an der bekannten Vorgehensweise ist, dass für einige Anwendungsarten des Handwerkzeuggerätes trotz der rotierbaren Lagerung des Haupthandgriffes keine ergonomisch günstige Handhaltung am Haupthandgriff möglich ist. So muss die den Haupthandgriff haltende Hand beispielsweise bei Arbeiten, die im Boden- oder Überkopfbereich ausgeführt werden, stark verdreht werden. Dies kann zustarken Beeinträchtigungen und frühzeitigem Ermüden der bedienenden Person führen.A disadvantage of the known procedure is that for some applications of the power tool despite the rotatable mounting of the main handle no ergonomically favorable hand position on the main handle is possible. For example, the hand holding the main handle has to be twisted heavily when working in the floor or overhead area. This can lead to excessive impairments and early fatigue of the serving person.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, bei einem Handwerkzeuggerät die genannten Nachteile zu vermeiden und bei einer grossen Vielzahl von Anwendungsarten eine ergonomisch günstige Handhaltung am Haupthandgriff zu ermöglichen.The present invention has for its object to avoid the disadvantages mentioned in a hand tool and to allow for a large variety of applications ergonomic hand position on the main handle.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass der Haupthandgriff zusätzlich zur Verstellbarkeit um die Bewegungsachse eine gegenüber dieser verstellbare Neigung aufweist. Hierdurch kann zusätzlich zu der veränderbaren Drehposition auch die Neigung des Haupthandgriffes gegenüber dem Gerätegehäuse verändert werden. Auf diese Weise erhält man besonders vielseitige Möglichkeiten zur Anordnung des Haupthandgriffes gegenüber dem Gerätegehäuse. Somit kann für besonders viele Anwendungsarten des Handwerkzeuggerätes eine ergonomisch günstige Handhaltung am Haupthandgriff eingestellt werden.According to the invention the object is achieved in that the main handle in addition to the adjustability about the movement axis has a relation to this adjustable inclination. In this way, in addition to the variable rotational position and the inclination of the main handle relative to the device housing can be changed. In this way, one obtains particularly versatile possibilities for the arrangement of the main handle relative to the device housing. Thus, an ergonomically favorable hand position can be set on the main handle for many applications of the power tool.

In einer besonders bevorzugten Ausführungsform ist die Neigung durch Verschieben des Haupthandgriffs entlang eines bogenförmigen Bewegungspfades verstellbar. Hierdurch wird der Haupthandgriffs beim Verlegen entlang des Bewegungspfades gegenüber dem Gerätegehäuse verdreht. Bei dieser Vorgehensweise kann der Haupthandgriff besonders stabil gelagert werden. Zudem können hierbei besonders viele verschiedene Neigungspositionen zwischen dem Haupthandgriff und dem Gerätegehäuse eingestellt werden.In a particularly preferred embodiment, the inclination is adjustable by moving the main handle along an arcuate path of movement. As a result, the main handle is twisted when laying along the path relative to the device housing. In this procedure, the main handle can be stored very stable. In addition, this can be set in particular many different inclination positions between the main handle and the device housing.

Bevorzugterweise spannt der bogenförmige Bewegungspfad in jeder Drehstellung des Haupthandgriffes um die Bewegungsachse herum eine Ebene auf, die parallel zur Bewegungsachse liegt. Auf diese Weise ist der Haupthandgriff einerseits um die Bewegungsachse und andererseits um eine dazu senkrecht stehende feste oder virtuelle Drehachse verstellbar, wodurch für nahezu jede denkbare Anwendungsart eine ergonomisch günstige Handhaltung am Haupthandgriff erzielt werden kann.Preferably, the arcuate path of movement in each rotational position of the main handle around the axis of motion spans a plane parallel to the axis of motion. In this way, the main handle on the one hand about the axis of movement and on the other hand to a perpendicular or virtual fixed axis of rotation adjustable, whereby for almost every conceivable type of application ergonomically favorable hand position on the main handle can be achieved.

Vorteilhafterweise ist der bogenförmige Bewegungspfad durch eine Verbindungsanordnung zwischen dem Gerätegehäuse und dem Haupthandgriff definiert. Die Verbindungsanordnung weist hierzu ein Gleitlager auf, an dem ein Bogenelement verschiebbar gehalten ist. Dabei kann das Bogenelement durch eine Fixiereinrichtung am Gleitlager festgelegt werden. Auf diese Weise kann man eine sehr stabile Führung und Festlegung des Bogenelementes erzielen.Advantageously, the arcuate path of movement is defined by a connection arrangement between the device housing and the main handle. For this purpose, the connection arrangement has a sliding bearing on which an arch element is held displaceably. In this case, the sheet member can be fixed by a fixing device on the plain bearing. In this way, you can achieve a very stable leadership and determination of the arch element.

Bevorzugterweise ist der Haupthandgriff D-förmig ausgebildet und das Bogenelement durch einen bogenförmigen Abschnitt des Haupthandgriffes gebildet. Durch diese einteilige Ausbildung des Haupthandgriffes und des Bogenelementes ist bei geringen Herstellungskosten eine besonders stabile Festlegung des Haupthandgriffes an dem Gerätegehäuse herstellbar.Preferably, the main handle is D-shaped and formed the bow member by an arcuate portion of the main handle. By this one-piece design of the main handle and the curved element a particularly stable fixing of the main handle on the device housing can be produced at low production costs.

Vorteilhafterweise ist zwischen dem Bogenelement und der Fixiereinrichtung ein lösbarer Formschluss herstellbar, der in Richtung des bogenförmigen Bewegungspfades wirkt. Hierdurch ist es möglich den Haupthandgriff sicher und bei geringem Bewegungsspiel in verschiedenen Positionen gegenüber dem Gerätegehäuse festzulegen.Advantageously, between the sheet member and the fixing a releasable positive connection can be produced, which acts in the direction of the arcuate path of movement. This makes it possible to set the main handle safely and with little play in different positions relative to the device housing.

Dabei ist es besonders günstig, wenn der Formschluss durch ein gegen das Bogenelement vorgespanntes Eingriffelement der Fixiereinrichtung herstellbar ist, das in eine von mehreren am Bogenelement eingelassenen Eingriffausnehmungen verlegbar ist. Hierdurch kann der Formschluss in einfacher Weise hergestellt und aufgehoben werden.It is particularly advantageous if the positive connection can be produced by a biased against the sheet member engaging element of the fixing, which can be laid in one of several recessed on the sheet member engagement recesses. As a result, the positive connection can be produced and removed in a simple manner.

In einer besonders vorteilhaften Ausführungsform ist der Haupthandgriff gegenüber dem Gerätegehäuse rotierbar gehalten und mittels einer Verdrehsicherung formschlüssig an dem Gerätegehäuse festlegbar. Hierdurch kann der Haupthandgriff in besonders vielen Drehpositionen um die Bewegungsachse herum auf stabile Weise gegenüber dem Gerätegehäuse festgelegt werden.In a particularly advantageous embodiment, the main handle is held rotatable relative to the device housing and can be fixed in a form-fitting manner to the device housing by means of an anti-twist device. As a result, the main handle can be fixed in a particularly large number of rotational positions around the movement axis in a stable manner relative to the device housing.

Dabei ist es günstig, wenn der Haupthandgriff über die Verbindungsanordnung an einem gegenüber dem Gerätegehäuse rotierbaren Lagerelement gehalten ist, an dem ein gegen das Gerätegehäuse vorgespanntes Sicherungselement angeordnet ist, das in eine von mehreren am Gerätegehäuse eingelassenen Sicherungsausnehmungen verlegbar ist. Ein solches Lagerelement bietet besonders viele Möglichkeiten für eine stabile und variable Festlegung des Haupthandgriffes gegenüber dem Gerätegehäuse. Ferner können hierbei zur Festlegung des Lagerelementes am Gerätegehäuse die gleichen Mittel verwendet werden wie zur Festlegung des Bogenelementes am Lagerelement. Auf diese Weise können die Herstellungskosten des Handwerkzeuggerätes weiter reduziert werden.It is advantageous if the main handle is held on the connection arrangement on a rotatable relative to the device housing bearing element to which a biased against the device housing fuse element is arranged, which is laid in one of several recessed on the device housing securing recesses. Such a bearing element offers many possibilities for a stable and variable fixing of the main handle relative to the device housing. Furthermore, the same means can be used for fixing the bearing element on the device housing as for fixing the arch element on the bearing element. In this way, the manufacturing cost of the power tool can be further reduced.

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

Fig. 1
eine Ansicht eines erfindungsgemässen Handwerkzeuggerätes,
Fig. 2
eine teilweise geschnittene Ansicht eines Haupthandgriffes des Handwerkzeuggerätes nach Fig. 1 und
Fig. 3
eine teilweise geschnittene Ansicht des Haupthandgriffes nach Fig. 2 in einer um 90° verdrehten Position.
The invention will be explained in more detail below with reference to an embodiment. Show it:
Fig. 1
a view of a hand tool according to the invention,
Fig. 2
a partially sectioned view of a main handle of the hand tool of FIG. 1 and
Fig. 3
a partially sectioned view of the main handle of FIG. 2 in a rotated position by 90 °.

Fig. 1 zeigt ein Handwerkzeuggerät 2 in Form eines Winkelschleifgerätes, mit einem Gerätegehäuse 4. Das Gerätegehäuse 4 bildet an einem werkzeugseitigen Ende einen Gerätekopf 6 aus, an dem eine Werkzeugaufnahme 8 zur Aufnahme eines Werkzeuges 10 in Form einer Werkzeugscheibe vorgesehen ist.Fig. 1 shows a hand tool 2 in the form of an angle grinder, with a device housing 4. The device housing 4 forms at a tool end of a device head 6, on which a tool holder 8 is provided for receiving a tool 10 in the form of a tool disk.

An einem von dem werkzeugseitigen Ende des Gerätegehäuses 4 abgewandten griffseitigen Ende ist ein Lagerelement 12 vorgesehen, das in einer Drehrichtung D um eine Bewegungsachse B herum rotierbar am Gerätegehäuse 4 gehalten ist. Die Bewegungsachse B fällt dabei mit der Hauptlängsachse des im Wesentlichen zylinderförmigen Gerätegehäuses 4 zusammen.At one of the tool-side end of the device housing 4 facing away from the handle end, a bearing element 12 is provided, which is held in a rotational direction D about a movement axis B around rotatable on the device housing 4. The movement axis B coincides with the main longitudinal axis of the substantially cylindrical device housing 4.

Über das Lagerelement 12 ist ein D-förmiger Haupthandgriff 14 dauerhaft mit dem Gerätegehäuse 4 verbunden. Dieser kann somit zusammen mit dem Lagerelement 12 um die Bewegungsachse B herum in eine andere Drehposition gegenüber dem Gerätegehäuse 4 verdreht werden, wie durch die strichpunktierte Linie dargestellt.Via the bearing element 12, a D-shaped main handle 14 is permanently connected to the device housing 4. This can thus be rotated together with the bearing element 12 about the axis of movement B around in a different rotational position relative to the device housing 4, as shown by the dashed line.

Der Haupthandgriff 14 setzt sich im Wesentlichen aus einem geraden Griffelement 16 und einem Bogenelement 18 zusammen, die einteilig ausgeformt sind. Das Bogenelement 18 ist entlang seiner Längserstreckung verschiebbar am Lagerelement 12 gehalten, so dass der Haupthandgriff 14 beim Verschieben entlang eines bogenförmigen Bewegungspfades P zwangsgeführt ist. Der Bewegungspfad P ist dabei derart ausgerichtet, dass er eine Ebene E aufspannt, die unabhängig von der Drehstellung des Lagerelementes 12 gegenüber dem Gerätegehäuse 4 immer parallel zu der Bewegungsachse B steht.The main handle 14 is composed essentially of a straight handle member 16 and an arch member 18 which are integrally formed. The curved element 18 is held displaceably along its longitudinal extension on the bearing element 12, so that the main handle 14 is forcibly guided during displacement along an arcuate path P. The movement path P is aligned such that it spans a plane E, which is always parallel to the movement axis B regardless of the rotational position of the bearing element 12 relative to the device housing 4.

Der Haupthandgriff 14 wird beim Verschieben wegen der kreisbogenförmigen Ausbildung seines Bogenelementes 18 um eine feste Drehachse A verdreht und ändert somit seine Neigung gegenüber dem Gerätegehäuse 4, wie gestrichelt dargestellt. Alternativ hierzu kann das Bogenelement 18 auch eine von einem durchgehenden Kreisbogen abweichende Form aufweisen. In diesem Fall dreht sich der Haupthandgriff beim Verschieben um eine virtuelle, d.h. sich bei der Verschiebung verlagernde Drehachse A.The main handle 14 is rotated when moving because of the circular arc-shaped formation of its arc member 18 about a fixed axis of rotation A and thus changes its inclination relative to the device housing 4, as shown in dashed lines. Alternatively, the sheet member 18 may also have a different shape from a continuous arc. In this case, the main handle rotates when shifting by a virtual, i. rotational axis A displaced during the displacement

Wie aus Fig. 2 zu entnehmen ist, ist der Haupthandgriff 14 über das Bogenelement 18 in einem als Gleitlager wirkenden Führungskanal 22 gehalten. Der Führungskanal 22 bildet somit zusammen mit dem Bogenelement 18 eine Verbindungsanordnung, die den Bewegungspfad P des Haupthandgriffes 14 gegenüber dem Lagerelement 12 definiert.As can be seen from Fig. 2, the main handle 14 is held on the sheet member 18 in a guide channel acting as a sliding bearing 22. The guide channel 22 thus forms, together with the arch element 18, a connection arrangement which defines the path of movement P of the main handle 14 relative to the bearing element 12.

An der Verbindungsanordnung ist ferner eine insgesamt mit 24 bezeichnete Fixiereinrichtung angeordnet. Die Fixiereinrichtung 24 weist ein Eingriffelement 26 in Form eines Nutsteines auf, der mittels einer Feder 28 gegen das Bogenelement 18 vorgespannt ist, die sich am Lagerelement 12 abstützt. Hierdurch ist das Eingriffelement 26 in eine von mehreren Eingriffausnehmungen 30 eingerückt, die am Bogenelement 18 eingelassen sind. Auf diese Weise wird in Richtung des Bewegungspfades P ein Formschluss zwischen dem Haupthandgriff 14 und dem Lagerelement 12 erzielt.At the connection arrangement, a fixing device designated generally by 24 is also arranged. The fixing device 24 has an engagement element 26 in the form of a sliding block, which is biased by a spring 28 against the sheet member 18, which is supported on the bearing element 12. As a result, the engagement element 26 is engaged in one of a plurality of engagement recesses 30, which are embedded in the arch element 18. In this way, a positive connection between the main handle 14 and the bearing element 12 is achieved in the direction of the movement path P.

Zum Lösen des Formschlusses ist das Eingriffelement 26 mit einem von Aussen zugänglichen Betätigungselement 32 verbunden, über das das Eingriffelement 26 entgegen der Kraft der Feder 28 aus der Eingriffausnehmung 30 herausbewegt werden kann. Anschliessend kann das Bogenelement 18 entlang des Bewegungspfades P im Führungskanal 22 verschoben werden. Dabei wird der Haupthandgriff 14 um die Drehachse A herum in eine neue Neigungsposition gegenüber dem Gerätegehäuse 4 verdreht, wie in Fig. 1 gestrichelt dargestellt. Sobald eine gewünschte Neigung des Griffelementes 16 gegenüber dem Gerätegehäuse 4, die für eine vorgesehene Anwendung des Handwerkzeuggerätes ergonomisch besonders günstig ist, erreicht ist, wird das Betätigungselement 32 wieder losgelassen. Dadurch kann das Eingriffelement 26 infolge der Kraft der Feder 28 in eine neue, in dieser Stellung an der Fixiereinrichtung 24 positionierte Eingriffausnehmung 30 einrücken, um den Haupthandgriff 14 wieder formschlüssig am Lagerelement 12 festzulegen.To release the positive connection, the engagement element 26 is connected to an externally accessible actuating element 32, via which the engagement element 26 can be moved out of the engagement recess 30 against the force of the spring 28. Subsequently, the sheet member 18 along the movement path P in the guide channel 22 are moved. In this case, the main handle 14 is rotated about the axis of rotation A around in a new tilt position relative to the device housing 4, as shown in phantom in Fig. 1. Once a desired inclination of the handle member 16 relative to the device housing 4, which is ergonomically particularly favorable for a given application of the power tool, is reached, the actuator 32 is released again. As a result, as a result of the force of the spring 28, the engagement element 26 can engage in a new engagement recess 30 positioned on the fixing device 24 in this position, in order to again fix the main handle 14 to the bearing element 12 in a form-fitting manner.

Wie aus Fig. 2 ferner zu entnehmen ist, ist am Gerätegehäuse 4 ein Lagerstutzen 34 mit einem Kragen 36 ausgeformt. Dieser Kragen 36 wird von einem umlaufend nach innen ragenden Rand 38 des Lagerelementes 12 hintergriffen, um die in Drehrichtung D verdrehbare Lagerung des Lagerelementes 12 am Gerätegehäuse 4 zu ermöglichen.As can also be seen from FIG. 2, a bearing socket 34 with a collar 36 is formed on the device housing 4. This collar 36 is engaged behind by a circumferentially inwardly projecting edge 38 of the bearing element 12, to allow the rotatable in the direction of rotation D mounting of the bearing element 12 on the device housing 4.

Zur verdrehsicheren Festlegung des Lagerelementes 12 am Gerätegehäuse 4 ist eine Verdrehsicherung 40 vorgesehen, die im Wesentlichen der Fixiereinrichtung 24 entspricht, wie aus Fig. 3 zu entnehmen ist. Die Verdrehsicherung 40 weist ein Sicherungselement 42 in Form eines Nutensteines auf, das durch eine Feder 44 gegen das Gerätegehäuse 4 vorgespannt ist und dabei in eine von mehreren kreisförmig angeordneten Sicherungsausnehmungen 46 greift, die in das Gerätegehäuse 4 eingelassen sind. Hierdurch wird in Drehrichtung D ein Formschluss zwischen dem Lagerelement 12 und dem Gerätegehäuse 4 erzeugt.For torsion-proof fixing of the bearing element 12 on the device housing 4, an anti-twist device 40 is provided, which substantially corresponds to the fixing device 24, as can be seen from FIG. The anti-rotation device 40 has a securing element 42 in the form of a sliding block, which is biased by a spring 44 against the device housing 4 and thereby engages in one of a plurality of circularly arranged securing recesses 46, which are embedded in the device housing 4. As a result, a positive connection between the bearing element 12 and the device housing 4 is generated in the direction of rotation D.

Zum Lösen des Formschlusses ist in die Oberfläche des Lagerelementes 12 eine Vertiefung 48 eingelassen, in der ein mit dem Sicherungselement 42 verbundenes Entriegelungselement 50 von Aussen verschiebbar ist. Durch Betätigung dieses Entriegelungselementes 50 kann das Sicherungselement 42 entgegen der Kraft der Feder 44 aus der Sicherungsausnehmung 46 herausbewegt werden. Anschliessend kann das Lagerelement 12 zusammen mit dem Haupthandgriff 14 um die Bewegungsachse B herum in eine neue Drehposition gegenüber dem Gerätegehäuse 4 verdreht und mit einer anderen der Sicherungsausnehmungen 46 in Eingriff gebracht werden.To release the positive connection, a recess 48 is recessed in the surface of the bearing element 12, in which a locking element 42 connected to the unlocking element 50 is displaceable from the outside. By actuating this unlocking element 50 the securing element 42 can be moved out of the securing recess 46 against the force of the spring 44. Subsequently, the bearing element 12 can be rotated together with the main handle 14 about the axis of movement B around in a new rotational position relative to the device housing 4 and brought into engagement with another of the securing recesses 46.

Wie aus den Fig. 2 und 3 ferner zu entnehmen ist, sind am Bogenelement 18 zwei bogenförmige Führungsnuten 52 eingelassen, die mit entsprechend geformten Führungsrippen 54 des Führungskanals 22 zusammenwirken, um eine stabile Führung und Festlegung des Haupthandgriffes 14 gegenüber dem Lagerelement 12 zu gewährleisten.As is also apparent from FIGS. 2 and 3, two arcuate guide grooves 52 are embedded in the sheet member 18, which cooperate with correspondingly shaped guide ribs 54 of the guide channel 22 to ensure a stable guidance and fixing of the main handle 14 relative to the bearing element 12.

Claims (9)

Handwerkzeuggerät (2), insbesondere Winkelschleifgerät,
mit einem Gerätegehäuse (4), das an einem werkzeugseitigen Ende einen Gerätekopf (6) aufweist, an dem ein Werkzeug (10) festlegbar ist,
und das an einem von dem werkzeugseitigen Ende abgewandten griffseitigen Ende mit einem Haupthandgriff (14) verbunden ist,
wobei der Haupthandgriff (14) gegenüber dem Gerätegehäuse (4) um eine Bewegungsachse (B) herum verstellbar ist,
dadurch gekennzeichnet, dass der Haupthandgriff (14) eine gegenüber der Bewegungsachse (B) verstellbare Neigung aufweist.Hand tool (2), in particular angle grinder,
with a device housing (4) which has at a tool-side end a device head (6) on which a tool (10) can be fixed,
and connected to a main handle (14) at a handle-side end remote from the tool-side end,
wherein the main handle (14) relative to the device housing (4) is adjustable around a movement axis (B),
characterized in that the main handle (14) has a relation to the movement axis (B) adjustable inclination. Handwerkzeuggerät nach Anspruch 1, dadurch gekennzeichnet, dass die Neigung durch Verschieben des Haupthandgriffes (14) entlang eines bogenförmigen Bewegungspfades (P) verstellbar ist.Hand tool according to claim 1, characterized in that the inclination is adjustable by moving the main handle (14) along an arcuate path of movement (P). Handwerkzeuggerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Bewegungspfad (P) eine Ebene (E) aufspannt, die parallel zur Bewegungsachse (B) liegt.Hand tool according to claim 1 or 2, characterized in that the movement path (P) spans a plane (E) which is parallel to the movement axis (B). Handwerkzeuggerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der bogenförmige Bewegungspfad (P) durch eine Verbindungsanordnung zwischen Gerätegehäuse (4) und Haupthandgriff (14) definiert ist, die ein Gleitlager aufweist an dem ein Bogenelement (18) verschiebbar gehalten ist, wobei das Bogenelement (18) durch eine Fixiereinrichtung (24) am Gleitlager festlegbar ist.Hand tool according to one of claims 1 to 3, characterized in that the arcuate path of movement (P) by a connection arrangement between the device housing (4) and the main handle (14) is defined, which has a sliding bearing on which an arcuate element (18) is slidably held, wherein the sheet member (18) by a fixing device (24) on the sliding bearing can be fixed. Handwerkzeuggerät nach Anspruch 4, dadurch gekennzeichnet, dass der Haupthandgriff (14) D-förmig ausgebildet ist und das Bogenelement (18) durch einen bogenförmigen Abschnitt des Haupthandgriffes (14) gebildet ist.Hand tool according to claim 4, characterized in that the main handle (14) is D-shaped and the sheet member (18) by an arcuate portion of the main handle (14) is formed. Handwerkzeuggerät nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass zwischen dem Bogenelement (18) und der Fixiereinrichtung (24) ein lösbarer Formschluss herstellbar ist, der in Richtung des bogenförmigen Bewegungspfades (P) wirkt.Hand tool according to claim 4 or 5, characterized in that between the sheet member (18) and the fixing device (24) a releasable positive connection can be produced, which acts in the direction of the arcuate movement path (P). Handwerkzeuggerät nach Anspruch 6, dadurch gekennzeichnet, dass der Formschluss durch ein gegen das Bogenelement (18) vorgespanntes Eingriffelement (26) der Fixiereinrichtung (24) herstellbar ist, das in eine von mehreren am Bogenelement (18) eingelassenen Eingriffausnehmungen (30) verlegbar ist.Hand tool according to claim 6, characterized in that the positive connection by an against the sheet member (18) biased engagement element (26) of the fixing device (24) can be produced, which in one of several on the sheet member (18) recessed engagement recesses (30) can be laid. Handwerkzeuggerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Haupthandgriff (14) gegenüber dem Gerätegehäuse (4) rotierbar gehalten ist und mittels einer Verdrehsicherung (40) an dem Gerätegehäuse (4) formschlüssig festlegbar ist.Hand tool according to one of claims 1 to 7, characterized in that the main handle (14) relative to the device housing (4) is held rotatably and by means of a rotation (40) on the device housing (4) is positively fixed. Handwerkzeuggerät nach Anspruch 8, dadurch gekennzeichnet, dass der Haupthandgriff (14) über die Verbindungsanordnung an einem gegenüber dem Gerätegehäuse (4) rotierbaren Lagerelement (12) gehalten ist, an dem ein gegen das Gerätegehäuse (4) vorgespanntes Sicherungselement (42) angeordnet ist, das in eine von mehreren am Gerätegehäuse (4) eingelassenen Sicherungsausnehmungen (46) verlegbar ist.Hand tool according to claim 8, characterized in that the main handle (14) via the connection arrangement on a relative to the device housing (4) rotatable bearing element (12) is held on which a against the device housing (4) biased securing element (42) is arranged, which can be laid in one of a plurality of securing recesses (46) let into the device housing (4).
EP05106892.2A 2004-07-27 2005-07-27 Tool handle Not-in-force EP1621294B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004036420A DE102004036420A1 (en) 2004-07-27 2004-07-27 Power tools handle

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EP1621294A2 true EP1621294A2 (en) 2006-02-01
EP1621294A3 EP1621294A3 (en) 2007-09-26
EP1621294B1 EP1621294B1 (en) 2013-04-24

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ID=35170147

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EP05106892.2A Not-in-force EP1621294B1 (en) 2004-07-27 2005-07-27 Tool handle

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US (1) US20060025060A1 (en)
EP (1) EP1621294B1 (en)
JP (1) JP4908795B2 (en)
DE (1) DE102004036420A1 (en)

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Also Published As

Publication number Publication date
JP2006035419A (en) 2006-02-09
JP4908795B2 (en) 2012-04-04
EP1621294A3 (en) 2007-09-26
EP1621294B1 (en) 2013-04-24
DE102004036420A1 (en) 2006-03-23
US20060025060A1 (en) 2006-02-02

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