EP1727651B1 - Electric hand machine-tool and power supply module for an electric hand machine-tool - Google Patents

Electric hand machine-tool and power supply module for an electric hand machine-tool Download PDF

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Publication number
EP1727651B1
EP1727651B1 EP05707888A EP05707888A EP1727651B1 EP 1727651 B1 EP1727651 B1 EP 1727651B1 EP 05707888 A EP05707888 A EP 05707888A EP 05707888 A EP05707888 A EP 05707888A EP 1727651 B1 EP1727651 B1 EP 1727651B1
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EP
European Patent Office
Prior art keywords
guide sleeve
power supply
supply module
portable electric
electric power
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Not-in-force
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EP05707888A
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German (de)
French (fr)
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EP1727651A1 (en
Inventor
Rainer Glauning
Marcin Rejman
Wolf Matthias
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Robert Bosch GmbH
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Robert Bosch GmbH
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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 power hand tool according to the preamble of claim 1 and of a power supply module according to the preamble of claim 8.
  • a power hand tool according to the preamble of claim 1 and of a power supply module according to the preamble of claim 8.
  • Such a power tool and such a Stromversolgungsmodul are from the U.S. 5,671,815 known.
  • a known as a battery pack power supply module is arranged on the underside of the molded handle on the machine housing, which is equipped for quick change in automatic contacting with an axial direction of the handle extending Ein 1500dom in a hangriff of the Machine housing arranged guide sleeve is inserted.
  • Ein 1500dom connected to the accumulator electrical contacts are present, which contact at the end of the insertion process arranged in the machine housing electrical contacts, so that the electrical coupling of the machine to the accumulator in the machine / module interface is automatically made when attaching the battery pack to the machine.
  • the inner wall of the guide sleeve with collecting ribs and the Outside wall of the insertion dome provided with corresponding groove-shaped rib recordings.
  • US 5671815 already a hand tool with a battery pack is known, which is fastened by means of a plug-in coupling to the power tool.
  • the plug-in coupling has on the machine side a sliding relative to the machine housing base and centering.
  • FR 2 623 345 is a hand tool described with a battery pack
  • the battery pack has two opposing axial guide ribs, which correspond to two opposite axial guide grooves in a receptacle of the power tool.
  • the electric power tool according to the invention with the features of claim 1 has the advantage that the at least one insertion end remote from the insertion end of the insertion sleeve form-locking element, which is designed as a rib and is able to correspond with a counter element on the power supply module, produces a positive connection to the power supply module used, the one ensures firm, backlash-free fit of the power supply module in the machine housing, so that in the electrical interface contacting each other contacts of power supply module and machine housing even with strong vibration of the electric power tool not against each move or briefly stand out from each other, so given a high vibration and Verschwinfestmaschine the contacts is.
  • the backlash is made by the positive locking element at the distal end of the guide sleeve insertion, serving as a guide aid catch ribs and ribs can be provided in the region of the insertion of the guide sleeve with great play to ensure easy capture of the power supply module in its placement on the machine housing and thus to improve the handling when changing the power supply module.
  • the power supply module according to the invention with the features of claim 8 has the advantage that the at least one arranged at the free end of the Ein Silicondoms positive locking element, which is designed as a recess, produces a positive connection to the machine housing, which ensures a solid, backlash-free fit of the power supply module in the machine housing. Because the backlash through the Positive-locking element is made at the free end in the contact region of the insertion, the contact of power supply module and machine housing contacting each other in the electrical interface can not move against each other or briefly stand out from each other, so that a high vibration and sealing strength of the contacts is given.
  • the positive-locking element is designed as a recess arranged in the side wall of the insertion dome, which runs out freely at the free end of the insertion dome.
  • the reduced end surface reduces the risk of contamination since a smaller face is less susceptible to soiling, e.g. arises when using the electric power tool on a construction site.
  • two recesses are provided on Ein 1500dom, wherein the recesses are arranged mirror-symmetrically and the plane of symmetry extends through the longitudinal axes of the Ein 1500doms.
  • a power supply module 11 also called battery pack, for an electric hand tool, for example, for a Akkubohrmaschine or a cordless screwdriver, shown in bottom view.
  • the lower end of the machine housing 12 which is here formed into a handle, is shown in perspective in association with the power supply module 11 by an axial starting movement in the direction of the arrow 10 in FIG Fig. 1 the power supply module 11 is attached to the machine housing 12 and removed for replacement again from the machine housing 12, wherein after attaching the power supply module 11 and locking the module 11 on the machine housing 12, the electric motor of Elektmhandtechnikmaschinemine is automatically coupled to the power supply module 11.
  • the power supply module 11 has a battery or a rechargeable battery (accumulator) receiving module housing 13, on whose machine housing 12 facing bottom a rectangular protruding Ein 1500dom 14 is formed.
  • a guide sleeve 15 is formed, which in Fig. 1 only schematized and partially indicated, in FIGS. 2 and 3 However, in its structural design is to be seen partially.
  • the guide sleeve 15 has an insertion opening 152 and, at its end remote from the insertion opening, electrical contacts to which the electric motor of the electric hand-held power tool is connected.
  • the at least one positive locking element on the Guide sleeve 15 is formed as an axially directed rib 21 which projects from the side wall of the guide sleeve 15 and extends from the insertion opening remote end of the guide sleeve 15 from only a short end portion of the guide sleeve 15.
  • the at least one form-locking element on Ein 1500dom 14 is formed as a recess 20 which is introduced into the side wall of the Einstockeddoms 14 and 14 runs free at the free end of the Einstockeddoms. Recess 20 and rib 21 are in Fig. 2 to see.
  • two recesses 20 and two ribs 21 are present, which are each arranged in mirror symmetry to each other on the insertion dome 14 and on the guide sleeve 15.
  • Both the guide sleeve 15 and the Ein 1500dom 14 has a box profile with a curved profile wall 151 and 141, respectively.
  • the two recesses 20 are arranged mirror-symmetrically in the curved profile wall 141 of the Einstockeddoms 14 and the two ribs 21 mirror-symmetrically in the curved profile wall 151 der arrangementshülse 15, wherein the plane of symmetry extends through the longitudinal axes of Ein 1500dom 14 and guide sleeve 15.
  • the ribs 21 are integrally formed with the guide sleeve 15 and have an axial length which is smaller than the axial length of the recesses 20.
  • the ribs 21 In order to make the end of the insertion path of the Ein manufactureddoms 14 taking place dipping the ribs 21 in the recesses 20 low, are pointing to the insertion opening 152 of the guide sleeve 15 facing end surfaces of the ribs 21 with rounded edges, as shown in FIG Fig. 2 can be seen on the front of the rib 21 facing the Ein manufactureddom 14.
  • the ribs 21 have a triangular cross-section and the recesses 20 in accordance with a triangular-shaped clear cross-section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Manipulator (AREA)
  • Portable Power Tools In General (AREA)

Abstract

A power supply module for interchangeable attachment to an electric tool has a module housing, which receives a battery and an introduction dome, formed integrally onto the module housing, for guiding the tool, on which dome there is an electrical interface with the electric power tool and at least one form-locking element for making a form lock with the tool housing is located.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Elektrohandwerkzeugmaschine nach dem Oberbegriff des Anspruchs 1 und von einem Stromversorgungsmodul nach dem Oberbegriff des Anspruchs 8. Eine solche Handwerkzeugmaschine und ein solches Stromversolgungsmodul sind aus der US 5 671 815 bekannt.The invention relates to a power hand tool according to the preamble of claim 1 and of a power supply module according to the preamble of claim 8. Such a power tool and such a Stromversolgungsmodul are from the U.S. 5,671,815 known.

Bei kabellosen Elektrohandwerkzeugmaschinen, wie Akkubohrer oder Akkuschrauber, ist an der Unterseite des am Maschinengehäuse angeformten Handgriffs ein als Akkupack bekanntes Stromversorgungsmodul angeordnet, das zum schnellen Wechseln bei automatischer Kontaktierung mit einem in Achsrichtung des Handgriffs sich erstreckenden Einführdom ausgestattet ist, der in eine im Hangriff des Maschinengehäuses angeordnete Führungshülse einschiebbar ist. Am Einführdom sind an dem Akkumulator angeschlossene elektrische Kontakte vorhanden, die am Ende des Einschubvorgangs im Maschinengehäuse angeordnete elektrische Kontakte kontaktieren, so dass die elektrische Ankopplung der Maschine an den Akkumulator in der Schnittstelle Maschine/Modul automatisch beim Ansetzvorgang des Akkupacks an die Maschine hergestellt wird. Für ein einfaches Handling beim Wechseln des Akkupacks ist auf ein gutes Einführverhalten des Akkupacks zu achten, was ein leichtes Einfangen des Einführdoms durch die Führungshülse voraussetzt, das durch ausreichende Lose oder ein ausreichendes Spiel im Bereich der Einführöffnung der Führungshülse erreicht werden kann. Für eine zuverlässige elektrische Kontaktierung an der Schnittstelle Akkupack/Maschine während des Betriebs der Maschine ist dagegen ein enges, möglichst spielloses Aufnehmen des Einführdoms in der Führungshülse erforderlich. Um diesen Forderungen nachzukommen ist die Innenwand der Führungshülse mit Auffangrippen und die Außenwand des Einführdoms mit entsprechenden nutförmigen Rippenaufnahmen versehen.In cordless electric power tool machines, such as cordless drill or cordless screwdriver, a known as a battery pack power supply module is arranged on the underside of the molded handle on the machine housing, which is equipped for quick change in automatic contacting with an axial direction of the handle extending Einführdom in a hangriff of the Machine housing arranged guide sleeve is inserted. On Einführdom connected to the accumulator electrical contacts are present, which contact at the end of the insertion process arranged in the machine housing electrical contacts, so that the electrical coupling of the machine to the accumulator in the machine / module interface is automatically made when attaching the battery pack to the machine. For easy handling when changing the battery pack is to pay attention to a good insertion behavior of the battery pack, which requires easy capture of the Einführdoms by the guide sleeve, which can be achieved by sufficient lots or sufficient clearance in the insertion opening of the guide sleeve. For a reliable electrical contact at the interface battery pack / machine during operation of the machine, however, a tight, as possible backlash recording the insertion dome in the guide sleeve is required. To meet these requirements, the inner wall of the guide sleeve with collecting ribs and the Outside wall of the insertion dome provided with corresponding groove-shaped rib recordings.

Aus US 5671815 ist bereits eine Handwerkzeugmaschine mit einem Akkupack bekannt, der mittels einer Steckkupplung an der Handwerkzeugmaschine befestigbar ist. Die Steckkupplung weist maschinenseitig einen gegenüber dem Maschinengehäuse verschiebbaren Sockel sowie Zentriermittel auf.Out US 5671815 already a hand tool with a battery pack is known, which is fastened by means of a plug-in coupling to the power tool. The plug-in coupling has on the machine side a sliding relative to the machine housing base and centering.

Zur Befestigung eines Akkupacks an einer Handwerkzeugmaschine wird gemäß US 5368954 eine Steckverbindung mit einem kreisrunden Steckteil am Batteriegehäuse und einer entsprechenden Aufnahme am Maschinengehäuse eingesetzt. Beide Teile weisen konzentrische Leistungskontakte und Rastmittel auf, die beim axialen Einstecken des Batteriegehäuses selbsttätig einrasten.To attach a battery pack to a hand tool is according to US 5368954 a plug connection with a circular plug-in part on the battery housing and a corresponding receptacle on the machine housing used. Both parts have concentric power contacts and locking means which automatically engage in the axial insertion of the battery case.

In FR 2 623 345 ist eine Handwerkzeugmaschine mit einem Akkupack beschrieben, wobei der Akkupack zwei einander gegenüberliegende axiale Führungsrippen aufweist, welche mit zwei einander gegenüberliegenden axialen Führungsnuten in einer Aufnahme der Handwerkzeugmaschine korrespondieren.In FR 2 623 345 is a hand tool described with a battery pack, the battery pack has two opposing axial guide ribs, which correspond to two opposite axial guide grooves in a receptacle of the power tool.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Elektrohandwerkzeugmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass das mindestens eine am einführöffnungsfernen Ende der Einführhülse angeordnete Formschlusselement, das als Rippe ausgebildet ist und mit einem Gegenelement am Stromversorgungsmodul zu korrespondieren vermag, ein Formschluss zu dem eingesetzten Stromversorgungsmodul herstellt, der einen festen, spiellosen Sitz des Stromversorgungsmoduls im Maschinengehäuse gewährleistet, so dass die in der elektrischen Schnittstelle einander kontaktierenden Kontakte von Stromversorgungsmodul und Maschinengehäuse selbst bei starker Vibration der Elektrohandwerkzeugmaschine sich nicht gegeneinander verschieben oder kurzzeitig voneinander abheben, so dass eine hohe Vibrations- und Verschließfestigkeit der Kontakte gegeben ist. Da die Spielfreiheit durch das Formschlusselement am einführöffnungsfernen Ende der Führungshülse hergestellt wird, können die als Führungshilfe dienenden Auffangrippen und Rippenaufnahmen im Bereich der Einführöffnung der Führungshülse mit großem Spiel versehen werden, um ein leichtes Einfangen des Stromversorgungsmoduls bei dessen Aufsetzen an das Maschinengehäuse zu gewährleisten und damit das Handling beim Wechseln des Stromversorgungsmoduls zu verbessern.The electric power tool according to the invention with the features of claim 1 has the advantage that the at least one insertion end remote from the insertion end of the insertion sleeve form-locking element, which is designed as a rib and is able to correspond with a counter element on the power supply module, produces a positive connection to the power supply module used, the one ensures firm, backlash-free fit of the power supply module in the machine housing, so that in the electrical interface contacting each other contacts of power supply module and machine housing even with strong vibration of the electric power tool not against each move or briefly stand out from each other, so given a high vibration and Verschließfestigkeit the contacts is. Since the backlash is made by the positive locking element at the distal end of the guide sleeve insertion, serving as a guide aid catch ribs and ribs can be provided in the region of the insertion of the guide sleeve with great play to ensure easy capture of the power supply module in its placement on the machine housing and thus to improve the handling when changing the power supply module.

Durch die in den Ansprüchen 2 - 7 aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Elektrohandwerkzeugmaschine möglich.The measures listed in claims 2-7 advantageous refinements and improvements of the claim 1 electric power tool are possible.

Das erfindungsgemäße Stromversorgungsmodul mit den Merkmalen des Anspruchs 8 hat den Vorteil, dass das mindestens eine am freien Ende des Einführdoms angeordnete Formschlusselement, das als Aussparung ausgebildet ist, einen Formschluss zu dem Maschinengehäuse herstellt, der einen festen, spiellosen Sitz des Stromversorgungsmoduls im Maschinengehäuse gewährleistet. Da die Spielfreiheit durch das Formschlusselement am freien Ende im Kontaktbereich des Einführdoms hergestellt ist, können die in der elektrischen Schnittstelle einander kontaktierenden Kontakte von Stromversorgungsmodul und Maschinengehäuse sich nicht gegeneinander verschieben oder kurzzeitig voneinander abheben, so dass eine hohe Vibrations- und Verschlussfestigkeit der Kontakte gegeben ist.The power supply module according to the invention with the features of claim 8 has the advantage that the at least one arranged at the free end of the Einführdoms positive locking element, which is designed as a recess, produces a positive connection to the machine housing, which ensures a solid, backlash-free fit of the power supply module in the machine housing. Because the backlash through the Positive-locking element is made at the free end in the contact region of the insertion, the contact of power supply module and machine housing contacting each other in the electrical interface can not move against each other or briefly stand out from each other, so that a high vibration and sealing strength of the contacts is given.

Durch die in den Ansprüchen 9 - 13 aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 8 angegebenen Stromversorgungsmoduls möglich.The measures listed in the claims 9 - 13 advantageous refinements and improvements of claim 8 power supply module are possible.

Gemäß einer vorteilhaften Ausführungsform der Erfindung ist das Formschlusselement als eine in der Seitenwand des Einführdoms angeordnete Aussparung ausgebildet, die am freien Ende des Einführdoms frei ausläuft. Dadurch, dass die Aussparung bis in die Stirnfläche des Einführdoms reicht, wird die Stirnfläche des Einführdoms verkleinert. Durch die reduzierte Stirnfläche wird wiederum das Verschmutzungsrisiko verringert, da eine kleinere Stirnfläche weniger empfindlich ist gegen Verschmutzung, wie sie z.B. beim Gebrauch der Elektröhandwerkzeugmaschine an einer Baustelle entsteht.According to an advantageous embodiment of the invention, the positive-locking element is designed as a recess arranged in the side wall of the insertion dome, which runs out freely at the free end of the insertion dome. The fact that the recess extends into the end face of the insertion dome, the end face of the Einführdoms is reduced. The reduced end surface, in turn, reduces the risk of contamination since a smaller face is less susceptible to soiling, e.g. arises when using the electric power tool on a construction site.

Gemäß einer vorteilhaften Ausführungsform der Erfindung sind zwei Aussparungen am Einführdom vorgesehen, wobei die Aussparungen spiegelsymmetrisch angeordnet sind und die Symmetrieebene durch die Längsachsen des Einführdoms verläuft. Durch diese konstruktive Ausgestaltung wird beim Einfallen des Stromversorgungsmoduls eine symmetrische Lastverteilung in der Schnittstelle Modul/Maschine erhalten.According to an advantageous embodiment of the invention, two recesses are provided on Einführdom, wherein the recesses are arranged mirror-symmetrically and the plane of symmetry extends through the longitudinal axes of the Einführdoms. As a result of this structural design, a symmetrical load distribution in the module / machine interface is obtained when the power supply module collapses.

Zeichnungdrawing

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

Fig. 1
eine perspektivische Unteransicht eines Stromversorgungsmoduls für eine Elektrohandwerkzeugmaschine in Zuordnung zu einem mit einem unteren Griffende ausschnittweise dargestellten Maschinengehäuse einer Elektrohandwerkzeugmaschine,
Fig. 2 und 3
jeweils ausschnittweise eine perspektivische Darstellung einer im Maschinengehäuse ausgebildeten Führungshülse und eines am Stromversorgungsmodul ausgebildeten Einführdoms, der in die Führungshülse teilweise (Fig. 2) und vollständig (Fig. 3) eingeschoben ist.
The invention is explained in more detail in the following description with reference to an embodiment shown in the drawing. Show it:
Fig. 1
3 a perspective bottom view of a power supply module for an electric handheld power tool in association with a machine handle of a handheld power tool, which detail is shown with a lower handle end;
FIGS. 2 and 3
each a detail of a perspective view of a formed in the machine housing guide sleeve and formed on the power supply module Einführdoms in the guide sleeve partially ( Fig. 2 ) and completely ( Fig. 3 ) is inserted.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In Fig. 1 ist ein Stromversorgungsmodul 11, auch Akkupack genannt, für eine Elektrohandwerkzeugmaschine, z.B. für eine Akkubohrmaschine oder einen Akkuschrauber, in Unteransicht dargestellt. Von der Elektrohandwerkzeugmasclaine ist ausschnittweise das untere Ende des hier zu einem Handgriff geformten Maschinengehäuses 12 perspektivisch in Zuordnung zu dem Stromversorgungsmodul 11 dargestellt Durch eine axiale Ansetzbewegung in Richtung Pfeil 10 in Fig. 1 wird das Stromvorsorgungsmodul 11 an das Maschinengehäuse 12 angesetzt und zum Wechseln wieder vom Maschinengehäuse 12 abgenommen, wobei nach Ansetzen des Stromversorgungsmoduls 11 und Verriegelung des Moduls 11 am Maschinengehäuse 12 der Elektromotor der Elektmhandwerkzeugmnchine automatisch an das Stromversorgungsmodul 11 angekoppelt ist.In Fig. 1 is a power supply module 11, also called battery pack, for an electric hand tool, for example, for a Akkubohrmaschine or a cordless screwdriver, shown in bottom view. From the electric hand tool mask, the lower end of the machine housing 12, which is here formed into a handle, is shown in perspective in association with the power supply module 11 by an axial starting movement in the direction of the arrow 10 in FIG Fig. 1 the power supply module 11 is attached to the machine housing 12 and removed for replacement again from the machine housing 12, wherein after attaching the power supply module 11 and locking the module 11 on the machine housing 12, the electric motor of Elektmhandwerkzeugmnchine is automatically coupled to the power supply module 11.

Das Stromversorgungsmodul 11 weist ein eine Batterie oder einen Akkumulator (Akku) aufnehmendes Modulgehäuse 13 auf, an dessen dem Maschinengehäuse 12 zugekehrten Unterseite ein rechtwinklig abstehender Einführdom 14 angeformt ist. Im Maschinengehäuse 12 ist eine Führungshülse 15 ausgebildet, die in Fig. 1 nur schematisiert und ausschnittweise angedeutet, in Fig. 2 und 3 jedoch in ihre konstruktiven Ausgestaltung ausschnittweise zu sehen ist. Die Führungshülse 15 weist eine Einführöffnung 152 und an ihrem einführöffnungsfernen Ende elektrische Kontakte auf, an denen der Elektromotor der Elektrohandwerkzeugmaschine angeschlossen ist. Beim Ansetzen des Stromversorgungsmoduls 11 an das Maschinengehäuse 12 wird der Einführdom 14 in die Führungshülse 15 axial eingeschoben, bis das Modulgehäuse 13 an dem unteren Stirnrand 121 des Maschinengehäuses 12 anschlägt und am Maschinengehäuse 12 vorgesehene Clipse in Rastausnehmungen 16 einrasten, die am Modulgehäuse 13 ausgebildet sind. Am freien Ende des Einführdoms 14 sind elektrische Kontakte 17 (Fig. 2 und 3) angeordnet, die mit der Batterie oder dem Akkumulator im Modulgehäuse 13 verbunden sind. Am Ende der Einschubbewegung des Einführdoms 14 kontaktieren diese Kontakte 17 die im Maschinengehäuse 12 angeordneten Kontakte.The power supply module 11 has a battery or a rechargeable battery (accumulator) receiving module housing 13, on whose machine housing 12 facing bottom a rectangular protruding Einführdom 14 is formed. In the machine housing 12, a guide sleeve 15 is formed, which in Fig. 1 only schematized and partially indicated, in FIGS. 2 and 3 However, in its structural design is to be seen partially. The guide sleeve 15 has an insertion opening 152 and, at its end remote from the insertion opening, electrical contacts to which the electric motor of the electric hand-held power tool is connected. When attaching the power supply module 11 to the machine housing 12 of the Einführdom 14 is inserted axially into the guide sleeve 15 until the module housing 13 abuts the lower end edge 121 of the machine housing 12 and provided on the machine housing 12 clips engage in locking recesses 16 which are formed on the module housing 13 , At the free end of the Einführdoms 14 are electrical contacts 17 ( FIGS. 2 and 3 ), which are connected to the battery or the accumulator in the module housing 13. At the end of the insertion movement of the Einführdoms 14 contact these contacts 17 arranged in the machine housing 12 contacts.

Wie hier nicht weiter dargestellt ist, sind als Einführhilfe für den Einführdom 14 in die Führungshülse 15 einerseits an der Innenwand der Führungshülse 15 sich axial bis zur Einschuböffnung der Führungshülse 15 erstreckende Auffangrippen angeordnet und andererseits in die Außenwand 141 des Einführdoms 14 entsprechende nutartige Rippenaufnahmen eingearbeitet, die am freien Ende des Einführdoms 14 enden und jeweils eine der Auffangrippen mit Verschiebespiel formschlüssig aufnehmen. Um einen guten Sitz des Stromversorgungsmoduls 11 am Maschinengehäuse 12 nach dem Einschieben des Einführdoms 14 in die Führungshülse 15 sowie eine weitgehend spielfreie Festlegung des Endabschnitts des Einführdoms 14 in der Führungshülse 15 zu erreichen, um dadurch die Vibrationsfestigkeit der Kontaktierung an der Schnittstelle Modul/Maschine zu steigern, weisen Führungshülse 15 und Einführdom 14 miteinander korrespondierende Formschlusselemente auf, die am einführoffnungsfemen Ende der Führungshülse 15 bzw. am freien Ende des Einführdoms 14 angeordnet sind, so dass sie erst gegen Ende des Einschubwegs des Einführdoms 14 miteinander in Eingriff kommen. Das mindestens eine Formschlusselement an der Führungshülse 15 ist als axial ausgerichtete Rippe 21 ausgebildet, die von der Seitenwand der Führungshülse 15 absteht und sich von dem einführöffnungsfernen Ende der Führungshülse 15 aus nur über einen kurzen Endabschnitt der Führungshülse 15 erstreckt. Das mindestens eine Formschlusselement am Einführdom 14 ist als Aussparung 20 ausgebildet, die in die Seitenwand des Einführdoms 14 eingebracht ist und am freien Ende des Einführdoms 14 frei ausläuft. Aussparung 20 und Rippe 21 sind in Fig. 2 zu sehen.As not shown here, are arranged as insertion aid for the Einführdom 14 in the guide sleeve 15 on the one hand on the inner wall of the guide sleeve 15 axially extending to the insertion opening of the guide sleeve 15 collecting ribs and on the other hand incorporated into the outer wall 141 of the Einführdoms 14 corresponding groove-like ribs recording, which end at the free end of the Einführdoms 14 and each receive one of the catch ribs with displacement play form fit. In order to achieve a good fit of the power supply module 11 on the machine housing 12 after insertion of the Einführdoms 14 in the guide sleeve 15 and a largely backlash-free fixing of the end portion of the Einführdoms 14 in the guide sleeve 15, thereby vibration resistance of contacting at the interface module / machine Increase, have guide sleeve 15 and Einführdom 14 mutually corresponding positive locking elements, which are arranged at Einführoffnungsfemen end of the guide sleeve 15 and the free end of the Einführdoms 14 so that they come into engagement with each other towards the end of the insertion path of the Einführdoms 14. The at least one positive locking element on the Guide sleeve 15 is formed as an axially directed rib 21 which projects from the side wall of the guide sleeve 15 and extends from the insertion opening remote end of the guide sleeve 15 from only a short end portion of the guide sleeve 15. The at least one form-locking element on Einführdom 14 is formed as a recess 20 which is introduced into the side wall of the Einführdoms 14 and 14 runs free at the free end of the Einführdoms. Recess 20 and rib 21 are in Fig. 2 to see.

In dem beschriebenen Ausführungsbeispiel sind zwei Aussparungen 20 und zwei Rippen 21 vorhanden, die jeweils spiegelsymmetrisch zueinander am Einführdom 14 bzw. an der Führungshülse 15 angeordnet sind. Sowohl die Führungshülse 15 als auch der Einführdom 14 weist ein Kastenprofil mit einer gewölbten Profilwand 151 bzw. 141 auf. Die beiden Aussparungen 20 sind spiegelsymmetrisch in der gewölbten Profilwand 141 des Einführdoms 14 und die beiden Rippen 21 spiegelsymmetrisch in der gewölbten Profilwand 151 derführungshülse 15 angeordnet, wobei die Symmetrieebene durch die Längsachsen von Einführdom 14 bzw. Führungshülse 15 verläuft. In Fig. 2 und 3 sind die beiden in der Stirnfläche 142 des Einführdoms 14 auslaufenden Aussparungen 20 zu sehen, während von den beiden Rippen 21 nur eine dargestellt ist. In Fig. 2 ist der Einführdom 14 nur soweit in die Führungshülse 15 eingeschoben, dass die Rippen 21 noch nicht in die Aussparungen 20 eintauchen, während in Fig. 3 der Einführdom 14 vollständig in die Führungshülse 15 eingeschoben ist und somit die Rippen 21 formschlüssig in den Aussparungen 20 aufgenommen sind.In the described embodiment, two recesses 20 and two ribs 21 are present, which are each arranged in mirror symmetry to each other on the insertion dome 14 and on the guide sleeve 15. Both the guide sleeve 15 and the Einführdom 14 has a box profile with a curved profile wall 151 and 141, respectively. The two recesses 20 are arranged mirror-symmetrically in the curved profile wall 141 of the Einführdoms 14 and the two ribs 21 mirror-symmetrically in the curved profile wall 151 derführungshülse 15, wherein the plane of symmetry extends through the longitudinal axes of Einführdom 14 and guide sleeve 15. In FIGS. 2 and 3 the two expiring in the end face 142 of the Einführdoms 14 recesses 20 can be seen, while only one of the two ribs 21 is shown. In Fig. 2 is the Einführdom 14 only as far inserted into the guide sleeve 15 that the ribs 21 are not yet immersed in the recesses 20, while in Fig. 3 the Einführdom 14 is completely inserted into the guide sleeve 15 and thus the ribs 21 are positively received in the recesses 20.

Die Rippen 21 sind einstückig mit der Führungshülse 15 ausgebildet und weisen eine axiale Länge auf, die kleiner ist als die axiale Länge der Aussparungen 20. Um das gegen Ende des Einschubwegs des Einführdoms 14 erfolgende Eintauchen der Rippen 21 in die Aussparungen 20 günstig zu gestalten, sind die zu der Einführöffnung 152 der Führungshülse 15 weisenden Stimflächen der Rippen 21 mit gerundeten Kanten versehen, wie dies in Fig. 2 an der zu dem Einführdom 14 weisenden Stirnseite der Rippe 21 zu sehen ist. Die Rippen 21 weisen einen dreieckförmigen Querschnitt und die Aussparungen 20 entsprechend einen dreieckförmigen lichten Querschnitt auf. Vorteilhaft ist aber dabei die eine Spitze der Querschnitte abgeflacht, so dass trapezförmige Querschnitte entstehen. Die größere Grundlinie des Trapezes des lichten Querschnitts der Aussparungen 20 weist zur Rippe 21. Die größere Grundlinie des Trapezquerschnitts der Rippe 21 liegt an der Seitenwand der Führungshülse 15 an.The ribs 21 are integrally formed with the guide sleeve 15 and have an axial length which is smaller than the axial length of the recesses 20. In order to make the end of the insertion path of the Einführdoms 14 taking place dipping the ribs 21 in the recesses 20 low, are pointing to the insertion opening 152 of the guide sleeve 15 facing end surfaces of the ribs 21 with rounded edges, as shown in FIG Fig. 2 can be seen on the front of the rib 21 facing the Einführdom 14. The ribs 21 have a triangular cross-section and the recesses 20 in accordance with a triangular-shaped clear cross-section. It is advantageous but flattened a tip of the cross sections, so that trapezoidal cross-sections arise. The larger base line of the trapezoid of the clear cross section of the recesses 20 faces the rib 21. The larger base line of the trapezoidal cross section of the rib 21 rests against the side wall of the guide sleeve 15.

Claims (13)

  1. Portable electric power tool having a machine housing (12) in which a guide sleeve (15) is formed for interchangeably receiving a power supply module (11), said guide sleeve (15) having an insertion opening (152) and an electrical interface to the power supply module (11), at least one form-fitting element for producing a form fit relative to the power supply module (11) being arranged in that end region of the guide sleeve (15) which is remote from the insertion opening (152), and the form-fitting element being a rib (21) projecting from the inner wall of the guide sleeve (15), characterized in that the rib (21) extends only over a short end section of the guide sleeve (15) from that end of the guide sleeve (15) which is remote from the insertion opening (152).
  2. Portable electric power tool according to Claim 1, characterized in that the rib (21) is formed in one piece with the guide sleeve (15).
  3. Portable electric power tool according to Claim 2, characterized in that that end face of the rib (21) which points towards the insertion opening (152) of the guide sleeve (15) has rounded edges and corners.
  4. Portable electric power tool according to either of Claims 2 and 3, characterized in that the rib (21) has a triangular cross section.
  5. Portable electric power tool according to one of Claims 2 to 4, characterized in that the rib (21) has a trapezoidal cross section with a larger trapezium base line contiguous with the sleeve wall.
  6. Portable electric power tool according to one of Claims 2 to 5, characterized in that two spaced-apart ribs (21) are provided which are arranged in mirror symmetry to one another, the plane of symmetry running through the longitudinal axes of the guide sleeve (15).
  7. Portable electric power tool according to Claim 6, characterized in that the guide sleeve (15) has a box profile with an arched profile wall (151), and in that the ribs (21) are arranged in the arched profile wall (151).
  8. Power supply module for interchangeably attaching to the machine housing (12) of a portable electric power tool, in particular a portable electric power tool according to one of Claims 1 to 7, having a module housing (13) accommodating a battery or an accumulator and an insertion dome (14) which is integrally formed thereon and is intended for guiding on the machine side and on which there is an electrical interface to the portable electric tool, at least one form-fitting element for producing a form fit relative to the machine housing (12) being arranged on the free end of the insertion dome (14), and the form-fitting element being a recess (20) arranged in the side wall of the insertion dome (14), characterized in that the form-fitting element extends only over a short end section of the insertion dome (14).
  9. Power supply module according to Claim 8,
    characterized in that the recess (20) runs out freely at the free end of the insertion dome (14).
  10. Power supply module according to Claim 8 or 9, characterized in that the recess (20) has a triangular clear cross section.
  11. Power supply module according to Claim 8 or 9, characterized in that the recess (20) has a trapezoidal clear cross section with a larger trapezium base line pointing away from the insertion dome (14).
  12. Power supply module according to one of Claims 8 to 11, characterized in that two spaced-apart recesses (20) are provided which are arranged in mirror symmetry to one another, the plane of symmetry running through the longitudinal axis of the insertion dome (14).
  13. Power supply element according to Claim 12,
    characterized in that the insertion dome (14) has a box profile with an arched profile wall (141), and in that the two recesses (20) are arranged in the arched profile wall (141).
EP05707888A 2004-03-12 2005-01-31 Electric hand machine-tool and power supply module for an electric hand machine-tool Not-in-force EP1727651B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012071A DE102004012071A1 (en) 2004-03-12 2004-03-12 Electric hand tool and power supply module for a power hand tool
PCT/EP2005/050380 WO2005087450A1 (en) 2004-03-12 2005-01-31 Electric hand machine-tool and power supply module for an electric hand machine-tool

Publications (2)

Publication Number Publication Date
EP1727651A1 EP1727651A1 (en) 2006-12-06
EP1727651B1 true EP1727651B1 (en) 2008-12-17

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EP05707888A Not-in-force EP1727651B1 (en) 2004-03-12 2005-01-31 Electric hand machine-tool and power supply module for an electric hand machine-tool

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US (2) US7552780B2 (en)
EP (1) EP1727651B1 (en)
CN (1) CN1929960B (en)
AT (1) ATE417710T1 (en)
DE (2) DE102004012071A1 (en)
WO (1) WO2005087450A1 (en)

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Also Published As

Publication number Publication date
US7552780B2 (en) 2009-06-30
EP1727651A1 (en) 2006-12-06
DE102004012071A1 (en) 2005-09-29
US20060199073A1 (en) 2006-09-07
US8033344B2 (en) 2011-10-11
WO2005087450A1 (en) 2005-09-22
CN1929960A (en) 2007-03-14
US20090202895A1 (en) 2009-08-13
ATE417710T1 (en) 2009-01-15
DE502005006270D1 (en) 2009-01-29
CN1929960B (en) 2010-09-08

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