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EP2163357A1 - Supplementary handle for a manual tool machine - Google Patents

Supplementary handle for a manual tool machine Download PDF

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Publication number
EP2163357A1
EP2163357A1 EP09167961A EP09167961A EP2163357A1 EP 2163357 A1 EP2163357 A1 EP 2163357A1 EP 09167961 A EP09167961 A EP 09167961A EP 09167961 A EP09167961 A EP 09167961A EP 2163357 A1 EP2163357 A1 EP 2163357A1
Authority
EP
European Patent Office
Prior art keywords
pivot joint
actuating member
clamping
locking
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
EP09167961A
Other languages
German (de)
French (fr)
Other versions
EP2163357B1 (en
Inventor
Paul Martin
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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Filing date
Publication date
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Publication of EP2163357A1 publication Critical patent/EP2163357A1/en
Application granted granted Critical
Publication of EP2163357B1 publication Critical patent/EP2163357B1/en
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Classifications

    • 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
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/25—Handle fastening means, clamp band

Definitions

  • the invention relates to an auxiliary handle for a hand tool, such as a drill, a hammer drill or a chipping hammer, with a clamping portion for fixing the auxiliary handle to a portion of the power tool, with a handle member for holding the auxiliary handle, arranged with a between the clamping portion and the handle member, blockable pivot joint having a bearing pin, with a clamping element for clamping and releasing the clamping portion, which is arranged at one end of the bearing pin, and with a locking device for blocking or releasing the pivot joint.
  • a hand tool such as a drill, a hammer drill or a chipping hammer
  • auxiliary handles are provided as side handles, for example, on a housing section device side adjacent to the tool holder for guiding the machine tool, if necessary.
  • the handle element of the auxiliary handle In order to guide the machine tool optimally and to allow different grip positions on the machine tool, which ensures a fatigue-poor working, it is known to design the handle element of the auxiliary handle about a pivot axis pivotable.
  • the pivot joint allows pivoting of the handle member relative to the clamping portion, whereby the center of gravity of the power tool is displaced relative to the user.
  • the handle element of the auxiliary handle is often adjusted during use of the machine tool.
  • the handle element of the auxiliary handle in the blocking position of the pivot joint is not unintentionally adjustable, usually intermeshing teeth are provided, for example, between the clamping portion and the handle member. For a pivoting of the grip element, this toothing must be repealed and then restored, which is a considerable amount of time.
  • an auxiliary handle for a hand tool is known, the clamp as a clamping section for fixing the auxiliary handle on having a portion of the power tool. Furthermore, the auxiliary handle has a grip element for gripping and holding the auxiliary handle. Between the clamping portion and the handle member a blockable pivot joint is arranged, which has a bearing pin with a longitudinal axis forming the pivot axis. Further, an operating knob is provided as a clamping element for clamping and releasing the clamping portion, wherein the actuating knob is disposed at one end of the bearing pin and engages an externally threaded portion of the bearing pin.
  • a cone-shaped, elastically deformable engagement element is provided, wherein the outer surface of the engagement element can be brought into frictional engagement with a conically widened recess in the section of the grip element.
  • a toothing is provided as a locking device, which blocks the pivot joint in positive engagement and releases the pivot joint in the disengaged state.
  • a disadvantage of the known solution is that to release the pivot joint, the mutually engaging elements of the locking device must be spaced from each other at least by the amount of tooth height, so that the handle member is pivotable relative to the clamping portion.
  • the tension and thus fixation of the clamping portion on the power tool can solve, so that the arranged on the power tool auxiliary handle can independently pivot about the defined by the tool of the power tool working axis.
  • the object of the invention is to provide an auxiliary handle for a hand tool that does not have the aforementioned disadvantages and allows easy and quick pivoting of the handle member without affecting the tension of the clamping portion.
  • an unlocking device independent of the clamping element is provided with an actuating member, upon actuation of which the locking device can be displaced from a blocking position for blocking the pivoting joint into a release position for releasing the pivoting joint.
  • the blocking of the pivot joint is released, without the tension of the clamping portion, such as the tension of a tension band, is released.
  • the two functions of the auxiliary handle namely fixing the handle element of the auxiliary handle on the power tool and pivoting of the handle element to the working direction, are separated. After pivoting of the grip member about the pivot axis in the desired position with respect to the power tool, the release of the pivot joint is released and the pivot joint blocked again.
  • the actuating member is provided on a portion of the handle member, whereby the unlocking device is easy to operate.
  • the actuator is provided on a readily accessible from the outside portion of the handle member.
  • the actuating member is provided at the, opposite the end of the Verspannelement end of the bearing pin, which additionally allows an advantageous embodiment and thus an advantageous production of the auxiliary handle, wherein a simple operation of the unlocking device is ensured.
  • the actuating member comprises a pushbutton axially displaceable along the pivot axis of the pivot joint, with which the unlocking device can be easily actuated and executed.
  • the locking device at least one with respect to the pivot axis of the pivot joint via the actuating member axially displaceable locking element which can be brought into abutment with a portion on the handle member for blocking the pivot joint.
  • the at least one locking element has a locking portion, which ensures the rotation of the parts to each other in the locked state of the pivot axis with a locking counterpart on the handle element.
  • the at least one locking element is transferred again into its locking position, in which the locking element is again in abutment with the corresponding section on the gripping element.
  • the at least one locking element on a toothing which engages in the blocking position of the pivot joint with a counter toothing on the portion of the handle member.
  • this counter toothing is complementary to the toothing formed on the at least one locking element.
  • a spring element which spring-loaded the at least one locking element in the direction of the actuating member.
  • the spring element for example a helical spring, acts as a restoring element, so that the at least one locking element is automatically forced into the blocking position for blocking the pivoting joint.
  • the holding device has two mutually coupled locking elements, which are simultaneously transferred from the blocking position of the pivot joint in a release position of the pivot joint upon actuation of the actuating member.
  • Two interlocking locking points are provided with the two locking elements, which advantageously ensure blocking of the pivot joint even in a chiselling operation of the hand-held power tool.
  • FIG. 1 is a hand tool 7 with an inventive additional handle 11 shown as a side handle, which is releasably secured to a cylindrical portion 8 of the power tool 7.
  • the auxiliary handle 11 has a handle member 31 for gripping and holding the auxiliary handle 11, which is pivotable about a pivot axis 12 to the working axis 9 of the power tool 7 back to adjust the handle positions on the power tool 7, if necessary.
  • the auxiliary handle 11, as he in the FIGS. 2 and 3 is shown, for fixing to the power tool 7 on a clamping portion 21 which comprises a clamping band 22.
  • the grip element 31 of the auxiliary handle 11 which is substantially U-shaped or D-shaped, has a base 32 and two legs 33 and 38 projecting from the base 32, respectively.
  • a first, the other leg 38 facing bearing portion 34 is provided on the leg 33.
  • a second, the leg 33 facing bearing portion 39 is provided on the other leg 38.
  • a lockable pivot joint 46 which has a bearing pin 47 with a pivot axis 12 forming the longitudinal axis.
  • the bearing pin 47 is rotatably held at one end 49 in the first bearing portion 34.
  • an eccentric lever is provided at the other end 48 of the bearing pin 47 in the region of the leg 38.
  • an independent of Verspannelement 51 unlocking device 56 is provided with an actuator 62, upon actuation of the locking device 41 from a blocking position for blocking the pivot joint 46 in a release position for releasing the pivot joint 46 displaceable is.
  • the actuator 62 is disposed at the end 48 of the tensioning member 51 opposite end 49 of the bearing pin 47.
  • the locking device 41 which is provided between the clamping portion 21 and the handle member 31, is formed as a toothing. To pivot the handle member 31 relative to the clamping portion 21, this toothing must be repealed.
  • the locking device 41 has two with respect to the pivot axis 12 of the pivot joint 46 via the actuator 62 axially displaceable, coupled together via a connecting sleeve 60 locking elements 58, each with a conical recess formed portion 35 and 40 on the handle member 31 for blocking of the pivoting joint 46 can be brought into contact. Both conical recesses are aligned the same.
  • the also conical locking elements 58 have at their outer conical surface as locking portion in each case a toothing which engages in the blocking position of the pivot joint 46 with a counter toothing on the inner cone surface as Arretianssussiabexcellent of the corresponding portion 35 and 40 of the handle member 31.
  • the actuator 62 is a pushbutton axially displaceable along the pivot axis 12 of the pivot joint 46, on which a pin-shaped transmission member 63 is provided for transmitting a relative movement of the actuator 62 to the locking elements 58.
  • a bearing bolt 47 surrounding the coil spring is provided as a spring element 66, which spring-loaded the locking elements 58 in the direction of the actuating member 62.
  • the actuating member 62 is displaced axially along the pivot axis 12 by pressure in the direction of the arrow 16 or the clamping section 21.
  • the actuator 62 acts via the transmission member 63 on the upper in this illustration locking element 58, which then together with the other Locking element 58 is displaced against the spring force of the spring element 66 in the direction of the Verspannelements 51.
  • the unlocking device 56, the pivot joint 46 is released and the handle member 31 can be pivoted to the desired position, without the tension of the clamping portion 21 and thus the determination of the auxiliary handle 11 is affected on the power tool 7 thereof.
  • the actuator 62 is released, whereupon this is displaced by the spring-loaded locking elements 58, which in turn come with the recesses 35 and 40 of the bearing portions 34 and 39 into engagement, in its initial position becomes. In this position, the unlocking device 56, the pivot joint 46 is blocked again. During the entire adjustment process of the grip element 31, the tension of the clamping portion 21 is maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Harvester Elements (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The auxiliary handle (11) has a grasping element (31) for holding the auxiliary handle, and has a bracing element for bracing and loosening a clamping section (21), which is arranged at an end of a bearing pin. The auxiliary handle has a releasing device with an actuating element. The releasing device is independent of the bracing element. The locking device is displaced from a blocking position for blocking the swivel joint into a release position for releasing the swivel joint by the actuation of the actuating element.

Description

Die Erfindung betrifft einen Zusatzhandgriff für eine Handwerkzeugmaschine, wie eine Bohrmaschine, einen Bohrhammer oder einen Meisselhammer, mit einem Klemmabschnitt zum Festlegen des Zusatzhandgriffs an einem Abschnitt der Handwerkzeugmaschine, mit einem Griffelement zum Halten des Zusatzhandgriffs, mit einem zwischen dem Klemmabschnitt und dem Griffelement angeordneten, blockierbaren Schwenkgelenk, das einen Lagerbolzen aufweist, mit einem Verspannelement zum Verspannen und Lösen des Klemmabschnitts, das an einem Ende des Lagerbolzens angeordnet ist, und mit einer Sperreinrichtung zum Blockieren beziehungsweise Freigeben des Schwenkgelenks.The invention relates to an auxiliary handle for a hand tool, such as a drill, a hammer drill or a chipping hammer, with a clamping portion for fixing the auxiliary handle to a portion of the power tool, with a handle member for holding the auxiliary handle, arranged with a between the clamping portion and the handle member, blockable pivot joint having a bearing pin, with a clamping element for clamping and releasing the clamping portion, which is arranged at one end of the bearing pin, and with a locking device for blocking or releasing the pivot joint.

An handgeführten Werkzeugmaschinen werden derartige Zusatzhandgriffe als Seitenhandgriffe beispielsweise an einem Gehäuseabschnitt geräteseitig benachbart zur Werkzeugaufnahme zur Führung der Werkzeugmaschine bedarfsweise vorgesehen. Um die Werkzeugmaschine optimal zu führen und verschiedene Griffpositionen an der Werkzeugmaschine zu ermöglichen, was ein ermüdungsärmeres Arbeiten gewährleistet, ist es bekannt, das Griffelement des Zusatzhandgriffs um eine Schwenkachse verschwenkbar auszugestalten. Das Schwenkgelenk erlaubt ein Verschwenken des Griffelements relativ zum Klemmabschnitt, wodurch der Schwerpunkt der Handwerkzeugmaschine relativ zum Anwender verlagert wird. Das Griffelement des Zusatzhandgriffs wird häufig während der Nutzung der Werkzeugmaschine verstellt.On hand-held machine tools such auxiliary handles are provided as side handles, for example, on a housing section device side adjacent to the tool holder for guiding the machine tool, if necessary. In order to guide the machine tool optimally and to allow different grip positions on the machine tool, which ensures a fatigue-poor working, it is known to design the handle element of the auxiliary handle about a pivot axis pivotable. The pivot joint allows pivoting of the handle member relative to the clamping portion, whereby the center of gravity of the power tool is displaced relative to the user. The handle element of the auxiliary handle is often adjusted during use of the machine tool.

Damit das Griffelement des Zusatzhandgriffs in der Blockierstellung des Schwenkgelenks nicht unbeabsichtigt verstellbar ist, sind üblicherweise ineinander greifende Verzahnungen beispielsweise zwischen dem Klemmabschnitt und dem Griffelement vorgesehen. Für ein Verschwenken des Griffelements muss diese Verzahnung aufgehoben und anschliessend wiederhergestellt werden, was einen erheblichen Zeitaufwand darstellt.Thus, the handle element of the auxiliary handle in the blocking position of the pivot joint is not unintentionally adjustable, usually intermeshing teeth are provided, for example, between the clamping portion and the handle member. For a pivoting of the grip element, this toothing must be repealed and then restored, which is a considerable amount of time.

Aus der DE 10 2006 055 524 A1 ist ein Zusatzhandgriff für eine Handwerkzeugmaschine bekannt, der eine Klemmschelle als Klemmabschnitt zum Festlegen des Zusatzhandgriffs an einem Abschnitt der Handwerkzeugmaschine aufweist. Weiter weist der Zusatzhandgriff ein Griffelement zum Ergreifen und Halten des Zusatzhandgriffs auf. Zwischen dem Klemmabschnitt und dem Griffelement ist ein blockierbares Schwenkgelenk angeordnet, das einen Lagerbolzen mit einer die Schwenkachse bildenden Längsachse aufweist. Weiter ist ein Betätigungsknopf als Verspannelement zum Verspannen und Lösen des Klemmabschnitts vorgesehen, wobei der Betätigungsknopf an einem Ende des Lagerbolzens angeordnet ist und an einem Aussengewindeabschnitt des Lagerbolzens angreift. Zwischen dem Verspannelement und einem Abschnitt des Griffelementes ist ein konusförmiges, elastisch verformbares Eingriffselement vorgesehen, wobei die Aussenfläche des Eingriffselements mit einer konisch erweiterten Ausnehmung im Abschnitt des Griffelementes in reibschlüssiger Anlage bringbar ist. Zwischen dem Griffelement und dem Klemmabschnitt ist als Sperreinrichtung eine Verzahnung vorgesehen, die im formschlüssigen Eingriff das Schwenkgelenk blockiert und im ausgerückten Zustand das Schwenkgelenk freigibt.From the DE 10 2006 055 524 A1 an auxiliary handle for a hand tool is known, the clamp as a clamping section for fixing the auxiliary handle on having a portion of the power tool. Furthermore, the auxiliary handle has a grip element for gripping and holding the auxiliary handle. Between the clamping portion and the handle member a blockable pivot joint is arranged, which has a bearing pin with a longitudinal axis forming the pivot axis. Further, an operating knob is provided as a clamping element for clamping and releasing the clamping portion, wherein the actuating knob is disposed at one end of the bearing pin and engages an externally threaded portion of the bearing pin. Between the tensioning element and a portion of the grip element, a cone-shaped, elastically deformable engagement element is provided, wherein the outer surface of the engagement element can be brought into frictional engagement with a conically widened recess in the section of the grip element. Between the handle member and the clamping portion a toothing is provided as a locking device, which blocks the pivot joint in positive engagement and releases the pivot joint in the disengaged state.

Mit dieser Ausgestaltung eines Zusatzhandgriffs wird die erforderliche Anzahl von Umdrehungen des Verspannelements zum Blockieren sowie zum Freigeben des Schwenkgelenks und zum Verspannen sowie zum Lösen des Klemmabschnitts reduziert.With this embodiment of an additional handle, the required number of revolutions of the Verspannelements for blocking and for releasing the pivot joint and for clamping and for releasing the clamping portion is reduced.

Nachteilig an der bekannten Lösung ist, dass zum Freigeben des Schwenkgelenks die miteinander in Eingriff stehenden Elemente der Sperreinrichtung zumindest um das Mass der Zahnhöhe zueinander beabstandet werden müssen, damit das Griffelement relativ zum Klemmabschnitt verschwenkbar ist. Dabei kann sich auch die Verspannung und somit Fixierung des Klemmabschnitts an der Handwerkzeugmaschine lösen, so dass der an der Handwerkzeugmaschine angeordnete Zusatzhandgriff selbstständig um die von dem Werkzeug der Handwerkzeugmaschine definierte Arbeitsachse verschwenken kann. Beim erneuten Blockieren des Schwenkgelenks muss daher zusätzlich auch die Ausrichtung des gesamten Zusatzhandgriffs in Bezug auf die Handwerkzeugmaschine mühsam wiederhergestellt werden.A disadvantage of the known solution is that to release the pivot joint, the mutually engaging elements of the locking device must be spaced from each other at least by the amount of tooth height, so that the handle member is pivotable relative to the clamping portion. In this case, the tension and thus fixation of the clamping portion on the power tool can solve, so that the arranged on the power tool auxiliary handle can independently pivot about the defined by the tool of the power tool working axis. When re-blocking the pivot joint therefore also the alignment of the entire auxiliary handle with respect to the hand tool must be laboriously restored.

Aufgabe der Erfindung ist es, einen Zusatzhandgriff für eine Handwerkzeugmaschine zu schaffen, der die vorgenannten Nachteile nicht aufweist sowie eine einfache und schnelle Verschwenkbarkeit des Griffelements ohne einen Einfluss auf die Verspannung des Klemmabschnitts erlaubt.The object of the invention is to provide an auxiliary handle for a hand tool that does not have the aforementioned disadvantages and allows easy and quick pivoting of the handle member without affecting the tension of the clamping portion.

Die Aufgabe ist durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen dargelegt.The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.

Gemäss der Erfindung ist eine vom Verspannelement unabhängige Entriegelungseinrichtung mit einem Betätigungsorgan vorgesehen, bei dessen Betätigung die Sperreinrichtung von einer Blockierstellung zur Blockierung des Schwenkgelenks in eine Freigabestellung zur Freigabe des Schwenkgelenks versetzbar ist.According to the invention, an unlocking device independent of the clamping element is provided with an actuating member, upon actuation of which the locking device can be displaced from a blocking position for blocking the pivoting joint into a release position for releasing the pivoting joint.

Bei Betätigung des Betätigungsorgans, welche vorteilhaft nur mit einem Finger einer Hand ausführbar ist, wird die Blockierung des Schwenkgelenks aufgehoben, ohne dass die Verspannung des Klemmabschnitts, wie beispielsweise die Verspannung eines Spannbandes, gelöst wird. Die beiden Funktionen des Zusatzhandgriffs, nämlich Festlegung des Griffelements des Zusatzhandgriffs an der Handwerkzeugmaschine und Verschwenkbarkeit des Griffelements zur Arbeitsrichtung hin, sind voneinander getrennt. Nach dem Verschwenken des Griffelements um die Schwenkachse in die gewünschte Stellung in Bezug auf die Handwerkzeugmaschine wird die Freigabe des Schwenkgelenks aufgehoben und das Schwenkgelenk wieder blockiert.Upon actuation of the actuator, which is advantageous executable only with one finger of one hand, the blocking of the pivot joint is released, without the tension of the clamping portion, such as the tension of a tension band, is released. The two functions of the auxiliary handle, namely fixing the handle element of the auxiliary handle on the power tool and pivoting of the handle element to the working direction, are separated. After pivoting of the grip member about the pivot axis in the desired position with respect to the power tool, the release of the pivot joint is released and the pivot joint blocked again.

Vorzugsweise ist das Betätigungsorgan an einem Abschnitt des Griffelementes vorgesehen, womit die Entriegelungseinrichtung einfach betätigbar ist. Vorteilhaft ist das Betätigungsorgan an einem von aussen her leicht zugänglichen Abschnitt des Griffelementes vorgesehen.Preferably, the actuating member is provided on a portion of the handle member, whereby the unlocking device is easy to operate. Advantageously, the actuator is provided on a readily accessible from the outside portion of the handle member.

Bevorzugt ist das Betätigungsorgan an dem, dem Ende mit dem Verspannelement gegenüberliegenden Ende des Lagerbolzens vorgesehen, was zusätzlich eine vorteilhafte Ausbildung und somit eine vorteilhafte Herstellung des Zusatzhandgriffs ermöglicht, wobei eine einfache Betätigung der Entriegelungseinrichtung gewährleistet ist.Preferably, the actuating member is provided at the, opposite the end of the Verspannelement end of the bearing pin, which additionally allows an advantageous embodiment and thus an advantageous production of the auxiliary handle, wherein a simple operation of the unlocking device is ensured.

Vorzugsweise umfasst das Betätigungsorgan einen entlang der Schwenkachse des Schwenkgelenks axial versetzbaren Druckknopf, womit die Entriegelungseinrichtung einfach betätigbar sowie ausführbar ist.Preferably, the actuating member comprises a pushbutton axially displaceable along the pivot axis of the pivot joint, with which the unlocking device can be easily actuated and executed.

Bevorzugt weist die Sperreinrichtung zumindest ein in Bezug auf die Schwenkachse des Schwenkgelenks über das Betätigungsorgan axial versetzbares Verriegelungselement auf, das mit einem Abschnitt am Griffelement für eine Blockierung des Schwenkgelenks in Anlage bringbar ist. Das zumindest eine Verriegelungselement weist einen Arretierungsabschnitt auf, der mit einem Arretierungsgegenabschnitt am Griffelement die Verdrehsicherung der Teile zueinander im blockierten Zustand der Schwenkachse sicherstellt. Bei Betätigung des Betätigungsorgans wird nur die Verbindung zwischen dem zumindest einen Verriegelungselement und dem Griffelement aufgehoben, so dass das Griffelement des Zusatzhandgriffs einfach in die gewünschte Stellung verschwenkbar ist.Preferably, the locking device at least one with respect to the pivot axis of the pivot joint via the actuating member axially displaceable locking element which can be brought into abutment with a portion on the handle member for blocking the pivot joint. The at least one locking element has a locking portion, which ensures the rotation of the parts to each other in the locked state of the pivot axis with a locking counterpart on the handle element. Upon actuation of the actuating member, only the connection between the at least one locking element and the grip element is released, so that the grip element of the auxiliary handle is simply pivotable into the desired position.

Sobald die gewünschte Stellung des Griffelements erreicht ist, wird das zumindest eine Verriegelungselement wieder in seine Verriegelungsstellung überführt, in der das Verriegelungselement erneut mit dem entsprechenden Abschnitt am Griffelement in Anlage steht.As soon as the desired position of the gripping element is reached, the at least one locking element is transferred again into its locking position, in which the locking element is again in abutment with the corresponding section on the gripping element.

Vorzugsweise weist das zumindest eine Verriegelungselement eine Zahnung auf, die in der Blockierstellung des Schwenkgelenks mit einer Gegenzahnung am Abschnitt des Griffelements eingreift. Vorteilhaft ist diese Gegenzahnung komplementär zur Zahnung an dem zumindest einen Verriegelungselement ausgebildet. Über die formschlüssige Verbindung zwischen dem zumindest einen Verriegelungselement und dem Griffelement lassen sich höhere Kräfte als über eine lediglich reibschlüssige Verbindung übertragen. Bei Betätigung des Betätigungsorgans wird diese Verzahnung aufgehoben beziehungsweise ausgerückt.Preferably, the at least one locking element on a toothing, which engages in the blocking position of the pivot joint with a counter toothing on the portion of the handle member. Advantageously, this counter toothing is complementary to the toothing formed on the at least one locking element. About the positive connection between the at least one locking element and the handle member can be higher forces than transmitted via a purely frictional connection. Upon actuation of the actuator, this toothing is canceled or disengaged.

Bevorzugt ist ein Federelement vorgesehen, welches das zumindest eine Verriegelungselement in Richtung des Betätigungsorgan federbeaufschlagt. Das Federelement, beispielsweise eine Schraubenfeder, wirkt als Rückstellelement, so dass das zumindest eine Verriegelungselement automatisch in die Blockierstellung zur Blockierung des Schwenkgelenks gezwungen wird.Preferably, a spring element is provided, which spring-loaded the at least one locking element in the direction of the actuating member. The spring element, for example a helical spring, acts as a restoring element, so that the at least one locking element is automatically forced into the blocking position for blocking the pivoting joint.

Vorzugsweise weist die Halteeinrichtung zwei miteinander gekoppelte Verriegelungselemente auf, die bei Betätigung des Betätigungsorgans gleichzeitig von der Blockierstellung des Schwenkgelenks in eine Freigabestellung des Schwenkgelenks überführbar sind. Mit den beiden Verriegelungselementen sind zwei von einander beabstandete Arretierungspunkte vorhanden, welche eine Blockierung des Schwenkgelenks auch in einem meisselnden Betrieb der Handwerkzeugmaschine vorteilhaft sicherstellen.Preferably, the holding device has two mutually coupled locking elements, which are simultaneously transferred from the blocking position of the pivot joint in a release position of the pivot joint upon actuation of the actuating member. Two interlocking locking points are provided with the two locking elements, which advantageously ensure blocking of the pivot joint even in a chiselling operation of the hand-held power tool.

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

Fig. 1
Eine Handwerkzeugmaschine mit angeordnetem Zusatzhandgriff im Grundriss;
Fig. 2
einen Schnitt entlang der Schwenkachse durch den Zusatzhandgriff mit der Entriegelungseinrichtung im blockierten Zustand; und
Fig. 3
den Schnitt analog Fig. 2 mit der Entriegelungseinrichtung im gelösten Zustand.
The invention will be explained in more detail below with reference to an embodiment. Show it:
Fig. 1
A hand tool with arranged additional handle in plan view;
Fig. 2
a section along the pivot axis through the auxiliary handle with the unlocking device in the locked state; and
Fig. 3
the cut analog Fig. 2 with the unlocking device in the released state.

Grundsätzlich sind in den Figuren gleiche Teile mit den gleichen Bezugszeichen versehen.Basically, the same parts are provided with the same reference numerals in the figures.

In der Figur 1 ist eine Handwerkzeugmaschine 7 mit einem erfindungsgemässen Zusatzhandgriff 11 als Seitenhandgriff dargestellt, der an einem zylindrischen Abschnitt 8 der Handwerkzeugmaschine 7 lösbar festgelegt ist. Der Zusatzhandgriff 11 weist ein Griffelement 31 zum Ergreifen und Halten des Zusatzhandgriffs 11 auf, das um eine Schwenkachse 12 zur Arbeitsachse 9 der Handwerkzeugmaschine 7 hin verschwenkbar ist, um die Griffpositionen an der Handwerkzeugmaschine 7 bedarfsweise anzupassen.In the FIG. 1 is a hand tool 7 with an inventive additional handle 11 shown as a side handle, which is releasably secured to a cylindrical portion 8 of the power tool 7. The auxiliary handle 11 has a handle member 31 for gripping and holding the auxiliary handle 11, which is pivotable about a pivot axis 12 to the working axis 9 of the power tool 7 back to adjust the handle positions on the power tool 7, if necessary.

Der Zusatzhandgriff 11, wie er in den Figuren 2 und 3 gezeigt ist, weist zur Festlegung an der Handwerkzeugmaschine 7 einen Klemmabschnitt 21 auf, der ein Spannband 22 umfasst.The auxiliary handle 11, as he in the FIGS. 2 and 3 is shown, for fixing to the power tool 7 on a clamping portion 21 which comprises a clamping band 22.

Das Griffelement 31 des Zusatzhandgriffs 11, das im Wesentlichen U- beziehungsweise D-förmig ausgebildet ist, weist eine Basis 32 und zwei jeweils von der Basis 32 abragende Schenkel 33 und 38 auf. An dem Schenkel 33 ist ein erster, dem anderen Schenkel 38 zugewandter Lagerabschnitt 34 vorgesehen. An dem anderen Schenkel 38 ist ein zweiter, dem Schenkel 33 zugewandter Lagerabschnitt 39 vorgesehen.The grip element 31 of the auxiliary handle 11, which is substantially U-shaped or D-shaped, has a base 32 and two legs 33 and 38 projecting from the base 32, respectively. On the leg 33, a first, the other leg 38 facing bearing portion 34 is provided. On the other leg 38, a second, the leg 33 facing bearing portion 39 is provided.

Zwischen dem Klemmabschnitt 21 und dem Griffelement 31 ist ein blockierbares Schwenkgelenk 46 vorgesehen, das einen Lagerbolzen 47 mit einer die Schwenkachse 12 bildenden Längsachse aufweist. Der Lagerbolzen 47 ist an einem Ende 49 drehfest im ersten Lagerabschnitt 34 gehalten. Als Verspannelement 51 zum Verspannen und Lösen des Klemmabschnitts 21 ist am anderen Ende 48 des Lagerbolzens 47 im Bereich des Schenkels 38 ein Exzenterhebel vorgesehen. Durch Umlegen des Exzenterhebels wird nach Überschreiten dessen Totpunktes der Klemmabschnitt 21 verspannt und eine Sperreinrichtung 41 in die Blockierstellung zur Blockierung des Schwenkgelenks 46 überführt. Durch Zurückschwenken des Verspannelements 51 in Richtung des Pfeils 17 ist die Verspannung des Klemmabschnitts 21 einfach lösbar, so dass der Zusatzhandgriff 11 um die Arbeitsachse 9 einer Handwerkzeugmaschine herum verschwenkbar beziehungsweise von der Handwerkzeugmaschine abnehmbar ist.Between the clamping portion 21 and the handle member 31, a lockable pivot joint 46 is provided, which has a bearing pin 47 with a pivot axis 12 forming the longitudinal axis. The bearing pin 47 is rotatably held at one end 49 in the first bearing portion 34. As a clamping element 51 for clamping and releasing the clamping portion 21, an eccentric lever is provided at the other end 48 of the bearing pin 47 in the region of the leg 38. By moving the eccentric lever after exceeding the dead center of the clamping portion 21 is clamped and transferred a locking device 41 in the blocking position for blocking the pivot joint 46. By pivoting back of the clamping element 51 in the direction of arrow 17, the tension of the clamping portion 21 is easily solvable, so that the auxiliary handle 11 is pivotable about the working axis 9 of a power tool around or removable from the power tool.

Weiter ist an einem Abschnitt des Griffelementes 31 im Bereich des ersten Lagerabschnitts 34 eine vom Verspannelement 51 unabhängige Entriegelungseinrichtung 56 mit einem Betätigungsorgan 62 vorgesehen, bei dessen Betätigung die Sperreinrichtung 41 von einer Blockierstellung zur Blockierung des Schwenkgelenks 46 in eine Freigabestellung zur Freigabe des Schwenkgelenks 46 versetzbar ist. Das Betätigungsorgan 62 ist an dem, dem Ende 48 mit dem Verspannelement 51 gegenüberliegenden Ende 49 des Lagerbolzens 47 angeordnet.Further, at a portion of the handle member 31 in the region of the first bearing portion 34 an independent of Verspannelement 51 unlocking device 56 is provided with an actuator 62, upon actuation of the locking device 41 from a blocking position for blocking the pivot joint 46 in a release position for releasing the pivot joint 46 displaceable is. The actuator 62 is disposed at the end 48 of the tensioning member 51 opposite end 49 of the bearing pin 47.

Die Sperreinrichtung 41, welche zwischen dem Klemmabschnitt 21 und dem Griffelement 31 vorgesehen ist, ist als eine Verzahnung ausgebildet. Zum Verschwenken des Griffelements 31 relativ zum Klemmabschnitt 21 muss diese Verzahnung aufgehoben werden. Die Sperreinrichtung 41 weist zwei in Bezug auf die Schwenkachse 12 des Schwenkgelenks 46 über das Betätigungsorgan 62 axial versetzbare, miteinander über eine Verbindungshülse 60 gekoppelte Verriegelungselemente 58 auf, die jeweils mit einem als konische Ausnehmung ausgebildeten Abschnitt 35 bzw. 40 am Griffelement 31 für eine Blockierung des Schwenkgelenks 46 in Anlage bringbar sind. Beide konische Ausnehmungen sind gleich ausgerichtet. Die ebenfalls konischen Verriegelungselemente 58 weisen an deren Aussenkonusfläche als Arretierungsabschnitt jeweils eine Zahnung auf, die in der Blockierstellung des Schwenkgelenks 46 mit einer Gegenzahnung an der Innenkonusfläche als Arretierungsgegenabschnitt des entsprechenden Abschnitts 35 bzw. 40 des Griffelements 31 eingreift.The locking device 41, which is provided between the clamping portion 21 and the handle member 31, is formed as a toothing. To pivot the handle member 31 relative to the clamping portion 21, this toothing must be repealed. The locking device 41 has two with respect to the pivot axis 12 of the pivot joint 46 via the actuator 62 axially displaceable, coupled together via a connecting sleeve 60 locking elements 58, each with a conical recess formed portion 35 and 40 on the handle member 31 for blocking of the pivoting joint 46 can be brought into contact. Both conical recesses are aligned the same. The also conical locking elements 58 have at their outer conical surface as locking portion in each case a toothing which engages in the blocking position of the pivot joint 46 with a counter toothing on the inner cone surface as Arretierungsgegenabschnitt of the corresponding portion 35 and 40 of the handle member 31.

Das Betätigungsorgan 62 ist ein entlang der Schwenkachse 12 des Schwenkgelenks 46 axial versetzbarer Druckknopf, an dem ein stiftförmiges Übertragungsglied 63 zur Übertragung einer Relativbewegung des Betätigungsorgans 62 auf die Verriegelungselemente 58 vorgesehen ist.The actuator 62 is a pushbutton axially displaceable along the pivot axis 12 of the pivot joint 46, on which a pin-shaped transmission member 63 is provided for transmitting a relative movement of the actuator 62 to the locking elements 58.

Die Enden des Spannbandes 22, die Verriegelungselemente 58, die Verbindungshülse 60 sowie die Lagerabschnitte 34 und 39 werden von dem Lagerbolzen 47 durchsetzt, so dass diese jeweils Gelenkhülsen des Schwenkgelenks 46 ausbilden.The ends of the tension band 22, the locking elements 58, the connecting sleeve 60 and the bearing portions 34 and 39 are penetrated by the bearing pin 47 so that they each form hinge sleeves of the pivot joint 46.

Im Lagerabschnitt 39 ist eine den Lagerbolzen 47 umgebende Schraubenfeder als Federelement 66 vorgesehen, das die Verriegelungselemente 58 in Richtung des Betätigungsorgans 62 federbeaufschlagt.In the bearing portion 39, a bearing bolt 47 surrounding the coil spring is provided as a spring element 66, which spring-loaded the locking elements 58 in the direction of the actuating member 62.

Beim Verspannen des Klemmabschnitts 21 über das Verspannelement 51 werden die Lagerabschnitte 34 und 39 zueinander verschoben, wobei die Verriegelungselemente 58 mit den Ausnehmungen 35 und 40 der Lagerabschnitte 34 und 39 in formschlüssigen Eingriff kommen. Der Zusatzhandgriff 11 ist auch in einem meisselnden Betrieb der Handwerkzeugmaschine 7 sicher an derselben gehalten.When clamping the clamping portion 21 via the bracing 51, the bearing portions 34 and 39 are shifted from each other, wherein the locking elements 58 come with the recesses 35 and 40 of the bearing portions 34 and 39 in positive engagement. The auxiliary handle 11 is held securely in a chiseling operation of the power tool 7 on the same.

Zum Verschwenken des Griffelements 31 relativ zum Klemmabschnitt 21 wird das Betätigungsorgan 62 durch Druck in Richtung des Pfeils 16 beziehungsweise des Klemmabschnitts 21 axial entlang der Schwenkachse 12 versetzt. Dabei wirkt das Betätigungsorgan 62 über das Übertragungsglied 63 auf das in dieser Darstellung obere Verriegelungselement 58, welches daraufhin gemeinsam mit dem anderen Verriegelungselement 58 entgegen der Federkraft des Federelementes 66 in Richtung des Verspannelements 51 verschoben wird. In dieser Stellung der Entriegelungseinrichtung 56 ist das Schwenkgelenk 46 freigegeben und das Griffteil 31 kann in die gewünschte Stellung verschwenkt werden, ohne dass die Verspannung des Klemmabschnitts 21 und somit die Festlegung des Zusatzhandgriffs 11 an der Handwerkzeugmaschine 7 davon betroffen ist.For pivoting the gripping element 31 relative to the clamping section 21, the actuating member 62 is displaced axially along the pivot axis 12 by pressure in the direction of the arrow 16 or the clamping section 21. In this case, the actuator 62 acts via the transmission member 63 on the upper in this illustration locking element 58, which then together with the other Locking element 58 is displaced against the spring force of the spring element 66 in the direction of the Verspannelements 51. In this position, the unlocking device 56, the pivot joint 46 is released and the handle member 31 can be pivoted to the desired position, without the tension of the clamping portion 21 and thus the determination of the auxiliary handle 11 is affected on the power tool 7 thereof.

Nachdem die gewünschte Stellung des Griffelements 31 relativ zum Klemmabschnitt 21 erreicht ist, wird das Betätigungsorgan 62 losgelassen, worauf dieses durch die federbeaufschlagten Verriegelungselemente 58, die ihrerseits wieder mit den Ausnehmungen 35 und 40 der Lagerabschnitte 34 und 39 in Eingriff kommen, in seine Ausgangsstellung verschoben wird. In dieser Stellung der Entriegelungseinrichtung 56 ist das Schwenkgelenk 46 erneut blockiert. Während dem gesamten Verstellvorgang des Griffelementes 31 bleibt die Verspannung des Klemmabschnitts 21 erhalten.After the desired position of the handle member 31 is reached relative to the clamping portion 21, the actuator 62 is released, whereupon this is displaced by the spring-loaded locking elements 58, which in turn come with the recesses 35 and 40 of the bearing portions 34 and 39 into engagement, in its initial position becomes. In this position, the unlocking device 56, the pivot joint 46 is blocked again. During the entire adjustment process of the grip element 31, the tension of the clamping portion 21 is maintained.

Claims (9)

Zusatzhandgriff für eine Handwerkzeugmaschine (7) mit einem Klemmabschnitt (21) zum Festlegen des Zusatzhandgriffs (11) an einem Abschnitt der Handwerkzeugmaschine (7),
mit einem Griffelement (31) zum Halten des Zusatzhandgriffs (11),
mit einem zwischen dem Klemmabschnitt (21) und dem Griffelement (31) angeordneten, blockierbaren Schwenkgelenk (46), das einen Lagerbolzen (47) aufweist,
mit einem Verspannelement (51) zum Verspannen und Lösen des Klemmabschnitts (21), das an einem Ende (48) des Lagerbolzens (47) angeordnet ist, und
mit einer Sperreinrichtung (41) zum Blockieren beziehungsweise Freigeben des Schwenkgelenks (46), gekennzeichnet durch
eine vom Verspannelement (51) unabhängige Entriegelungseinrichtung (56) mit einem Betätigungsorgan (62), bei dessen Betätigung die Sperreinrichtung (57) von einer Blockierstellung zur Blockierung des Schwenkgelenks (46) in eine Freigabestellung zur Freigabe des Schwenkgelenks (46) versetzbar ist.Additional handle for a hand tool (7) with a clamping portion (21) for fixing the auxiliary handle (11) on a portion of the power tool (7),
with a grip element (31) for holding the auxiliary handle (11),
with a lockable pivot joint (46) arranged between the clamping section (21) and the gripping element (31) and having a bearing pin (47),
a clamping element (51) for clamping and releasing the clamping portion (21) which is arranged at one end (48) of the bearing pin (47), and
with a locking device (41) for blocking or releasing the pivot joint (46), characterized by
an unlocking device (56) independent of the tensioning element (51) with an actuating member (62), upon actuation of which the locking device (57) can be displaced from a blocking position to block the pivoting joint (46) into a release position for releasing the pivoting joint (46). Zusatzhandgriff nach Anspruch 1, dadurch gekennzeichnet, dass das Betätigungsorgan (62) an einem Abschnitt des Griffelementes (31) vorgesehen ist.Additional handle according to claim 1, characterized in that the actuating member (62) is provided on a portion of the grip element (31). Zusatzhandgriff nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Betätigungsorgan (62) an dem, dem Ende (48) mit dem Verspannelement (51) gegenüberliegenden Ende (49) des Lagerbolzens (47) vorgesehen ist.Additional handle according to claim 1 or 2, characterized in that the actuating member (62) at the, the end (48) with the Verspannelement (51) opposite end (49) of the bearing pin (47) is provided. Zusatzhandgriff nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Betätigungsorgan (62) einen entlang der Schwenkachse (12) des Schwenkgelenks (46) axial versetzbaren Druckknopf umfasst.Additional handle according to one of claims 1 to 3, characterized in that the actuating member (62) comprises a along the pivot axis (12) of the pivot joint (46) axially displaceable push button. Zusatzhandgriff nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Sperreinrichtung (41) zumindest ein in Bezug auf die Schwenkachse (12) des Schwenkgelenks (46) über das Betätigungsorgan (62) axial versetzbares Verriegelungselement (58) aufweist, das mit einem Abschnitt (35, 40) am Griffelement (31) für eine Blockierung des Schwenkgelenks (46) in Anlage bringbar ist.Additional handle according to one of claims 1 to 4, characterized in that the locking device (41) at least one with respect to the pivot axis (12) of the pivot joint (46) via the actuating member (62) axially displaceable locking element (58) having a Section (35, 40) on the handle member (31) for blocking the pivot joint (46) is engageable. Zusatzhandgriff nach Anspruch 5, dadurch gekennzeichnet, dass das zumindest eine Verriegelungselement (58) eine Zahnung aufweist, die in der Blockierstellung des Schwenkgelenks (46) mit einer Gegenzahnung am Abschnitt (35, 40) des Griffelements (131) eingreift.Additional handle according to claim 5, characterized in that the at least one locking element (58) has a toothing, which in the blocking position of Swivel joint (46) with a counter toothing on the portion (35, 40) of the handle member (131) engages. Zusatzhandgriff nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass ein Übertragungsglied (63) an dem Betätigungsorgan (62) zur Übertragung einer Relativbewegung des Betätigungsorgans (62) auf das zumindest eine Verriegelungselement (58) vorgesehen ist.Additional handle according to claim 5 or 6, characterized in that a transmission member (63) on the actuating member (62) for transmitting a relative movement of the actuating member (62) on the at least one locking element (58) is provided. Zusatzhandgriff nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass ein Federelement (66) vorgesehen ist, welches das zumindest eine Verriegelungselement (58) in Richtung des Betätigungsorgan (62) federbeaufschlagt.Additional handle according to one of claims 5 to 7, characterized in that a spring element (66) is provided which the spring at least one locking element (58) in the direction of the actuating member (62). Zusatzhandgriff nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass zwei miteinander gekoppelte Verriegelungselemente (58) vorgesehen sind, die bei Betätigung des Betätigungsorgans (62) gleichzeitig von der Blockierstellung des Schwenkgelenks (46) in eine Freigabestellung des Schwenkgelenks (46) überführbar sind.Additional handle according to one of claims 5 to 8, characterized in that two mutually coupled locking elements (58) are provided, which are simultaneously on actuation of the actuating member (62) of the blocking position of the pivot joint (46) in a release position of the pivot joint (46) can be transferred ,
EP09167961.3A 2008-09-15 2009-08-17 Supplementary handle for a manual tool machine Active EP2163357B1 (en)

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DE102008042114A DE102008042114A1 (en) 2008-09-15 2008-09-15 Additional handle for a hand tool

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EP2163357B1 EP2163357B1 (en) 2017-07-26

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Also Published As

Publication number Publication date
US20100064480A1 (en) 2010-03-18
EP2163357B1 (en) 2017-07-26
US8166614B2 (en) 2012-05-01
DE102008042114A1 (en) 2010-03-18
ES2644794T3 (en) 2017-11-30

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