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EP1949345B1 - Electric hand tool device and battery pack therefor - Google Patents

Electric hand tool device and battery pack therefor Download PDF

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Publication number
EP1949345B1
EP1949345B1 EP05803863A EP05803863A EP1949345B1 EP 1949345 B1 EP1949345 B1 EP 1949345B1 EP 05803863 A EP05803863 A EP 05803863A EP 05803863 A EP05803863 A EP 05803863A EP 1949345 B1 EP1949345 B1 EP 1949345B1
Authority
EP
European Patent Office
Prior art keywords
hand
power tool
battery pack
held power
control electronics
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.)
Expired - Lifetime
Application number
EP05803863A
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German (de)
French (fr)
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EP1949345A1 (en
Inventor
Bernd Wiesner
Jochen Gräber
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.)
Metabowerke GmbH and Co
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Metabowerke GmbH and Co
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Publication date
Application filed by Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP1949345A1 publication Critical patent/EP1949345A1/en
Application granted granted Critical
Publication of EP1949345B1 publication Critical patent/EP1949345B1/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
    • 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

Definitions

  • the invention relates to a battery-operated electric hand tool device with an electronic control unit and a wireless and contactless addressable transceiver and a memory device on which an authorization code is stored, wherein an operation lock state and an operation release state are distinguishable. Furthermore, the invention relates to a battery pack for this purpose.
  • Such an electric hand tool device interacts with a user-led and largely miniaturized external separate device, which has a battery-operated transceiver device. Using this separate control device, it is possible to intentionally cause the electric hand tool device to be put into an operation lock state or a service release state in which the device can be used by a user.
  • Such an electric hand tool device is described in DE 102 38 710 A1 and DE 103 09 703 A1 the applicant. The latter document is concerned with the fact that the theft of electrical hand tool devices located in the operating release state should be made largely unattractive, which is achieved by requesting an authorization code signal from the external device carried by the authorized user from the electric hand tool device from time to time. If no corresponding authorization code signal is received, This will put the device in the locked state, rendering it unavailable to an unauthorized stunner.
  • the code signal must be displayed during a restart after a battery change or plugging in the power plug over a relatively long period of time to be sent out.
  • the code signal transmitter must be supplied with energy. It must therefore be either connected to a battery charger, so that at least always after removal of a battery from the charger for a long time the code signal is emitted, or the code transmitter must be permanently connected to a power supply. In any case, it would not be possible to provide the Codesignalsender in an external, separately portable device, since the required power supply for practical reasons could not be guaranteed with conventional batteries.
  • the code signal transmitter On the basis of the DE 44 29 206 C2 Known concept would be the formation of the code signal transmitter as an external portable device, especially in the size of a key fob, not suitable due to short battery life. An anti-theft device for the battery pack is not provided.
  • the electric hand tool device has a transmitting / receiving device. Its control electronics always endeavor to assume an operational blocking state in which the device can not be operated. If a user wants to operate the device, he needs a transponder. On the machine side, an electromagnetic field is emitted, the z. B. accommodated in a bracelet transponder with energy, so that it emits an authorization code signal, which in turn is received by the transmitting / receiving device of the electric power tool.
  • the transponder must be in the immediate vicinity of the electric hand tool, as he otherwise the to Sending an authorization code signal can not absorb required energy.
  • the device If the authorization code signal emitted by the transponder coincides with the authorization code stored in the storage device of the electric hand tool device, the device is put into an operating release state and can be operated. The above-described query is then carried out batchwise. Only as long as this communication identifies an authorized user, the electric hand tool device remains operational.
  • a transponder extracts the energy required for functioning from the electromagnetic field acting on it. Therefore, it is also imperative that the transponder is placed in the immediate vicinity of the electric hand tool device to enable activation of the device. As soon as a user moves away for a short time, the device switches back to the operating lock state, which can prove annoying in practice. An anti-theft device for the battery pack is not provided.
  • the present invention has for its object to make the theft of battery-powered electric hand tool and battery packs even more unattractive.
  • This object is achieved in that a wired or wireless interface is provided by the control electronics of the electric power tool to a battery pack, so that closing information from the control electronics of the electric hand tool to the battery pack überffenbar and stored in a storage device of the battery pack and are read out again from the memory device ,
  • the battery pack is integrated or included in the theft protection device of the electric hand tool device.
  • the interface of the electric hand tool device to an external transmitting / receiving device is to a certain extent also used for the battery pack.
  • Closing information which receives the electric hand tool from the outside via its transmitting / receiving device via the mentioned wired or wireless interface between the control electronics of the electric hand tool and the battery packs to the battery pack and stored there.
  • the control electronics of the electric hand tool device can thus actively take over the theft protection for the battery pack by closing information can be stored on the battery pack and stored in a storage device of the battery pack and vice versa closing information read from a storage device of the battery pack and processed in the control electronics of the electric hand tool.
  • control electronics of the electric hand tool device is designed so that closing information to one or more predetermined Time points or time intervals or in the presence of predetermined or predefinable conditions transmitted via the interface to the battery pack and / or be read from the memory device of the battery pack. It is then possible in this way to check again and again or ensure that there is a Nutzüngberecht Trent for the battery pack currently in use and used.
  • control electronics of the electric hand tool device can also be designed so that when connecting a battery pack with the electric hand tool a stored in the memory device of the electric hand tool device authorization code or a closing information in the broadest sense automatically transmitted via the interface to the battery pack and there in the memory device of the battery pack is stored and / or read an stored in the memory device of the battery pack authorization code and is given via the interface to the control electronics of the electric power tool.
  • the external transceiver is designed so that upon receipt of an authorization code signal request, a transmission mode is activated and an authorization code signal is sent to the transmitting / receiving device of the electric hand tool and then the transmission mode is again automatically deactivated. In this way, an energy-saving operation of the external transceiver is possible, which can be powered by a battery for long periods of energy.
  • control electronics and the transmitting / receiving device of the electric power tool is designed so that after evaluation of the received authorization code signal and comparison with the stored in the memory device of the electric hand tool device authorization code and stored in the memory device of the battery pack and readable via the interface authorization code, the electric hand tool either remains in the operation enable state or is set in the operation prohibited state. It is therefore in turn the battery pack by means of the locking information stored there with included in the theft protection of the electric power tool.
  • the electric hand tool device has a display device for displaying the operating state (release state or blocking state) of the electric hand tool device and the operating state of the battery pack.
  • FIG. 1 1 shows a battery-operated electric hand tool device, generally designated by the reference numeral 2, with a battery pack 4 connected thereto and with an external battery-operated device 6 that can be carried by an authorized user, with a schematically indicated external transceiver device 8.
  • the transceiver device 8 is capable of being connected via an interface connection 10 , preferably a wireless and non-contact interface, such as an optical interface (eg, infrared interface), to communicate with a transceiver 12 of the handheld power tool.
  • This interacts with an electronic control unit 14 in the electric hand tool device, wherein information obtained via the interface 10 can be stored in a memory device 16 and read from there again. This information may be an authorization code identifying an authorized user.
  • closing information can be transmitted via the interface 10 via the external device 6 which can be carried by an authorized user be given to the electric hand tool 2 and stored there in the memory device 6. This closing information stored there is used after predetermined or predefinable time intervals for a check as to whether the electric hand tool device can continue to be operated from an operating release state or is put into a blocking state.
  • control electronics 14 of the electric hand tool device 2 may be designed so that it sends an authorization code signal request via the interface 10 to the external device after predetermined or predeterminable time intervals or in the presence of predetermined or predefinable conditions via the device's internal transmitting / receiving device.
  • This authorization code signal request is received by the external device 6 via its transmitting / receiving device, and then the external device 6 is activated, that is, transferred from an energy-saving reception mode in an active transmission mode.
  • the device 6 or its control electronics then causes the transmission of a predetermined or predetermined authorization code signal via the interface 10 to the electric hand tool 2.
  • This signal is received via the transmitting / receiving device 12 and evaluated by the control electronics 14, that is, the information content of the signal is determined and compared with the stored in the memory device 16 closing information. If the authorization code is correct, the electric hand tool device remains in the released state. If the code is not correct or if the electric hand tool device does not receive an answer to its authorization code signal request, for example because the device was stolen without authorization, ie is located away from the authorized user and his external device 6, then the electric hand tool device is set to the operating blocking state. A further operation is then not possible.
  • This measure of dislocation in the locked state is in FIG. 1 schematically indicated by a switch 18 for interrupting the power or power supply of an electric motor 20.
  • the battery pack 4 is also integrated in the anti-theft protection as described above.
  • the electrical hand tool device has a further, wired or wireless interface 22 between the control electronics 14 and the battery pack 4.
  • the interface 22 is preferably designed so that it is only active when the electric hand tool device is connected to the battery pack 4 for its intended use.
  • the interface 22 closing information obtained from the external device 6 can be transmitted in the broadest sense of the control electronics 14 of the electric hand tool device to the battery pack 4 and stored there in a memory device 24 or read out of this memory device 24 again. It would be sufficient in itself that the battery pack 4 has only one memory device 24, which can be described and read starting from the control electronics 14 of the electric hand tool device 2. But it would also be conceivable and advantageous that the battery pack 4, in particular if it is designed as a lithium-ion battery pack, own control electronics 26 includes. Especially in this case, it would also be conceivable and advantageous that the battery pack itself has a wireless and contactless addressable transmitting / receiving device 28, which in principle has a Interface 30 with the external device 6 could represent.
  • the electric hand tool 2 or its control electronics 4 is formed in a preferred embodiment of the invention that are obtained via the interface 10 closing information stored both in the device-internal memory device 16 and given via the interface 22 to the battery pack 4 and in the memory device 24 of the battery pack be deposited. If, in a subsequent authorization check, either the closing information stored in the memory device 24 of the battery pack 4 or the closing information stored in the memory device 16 of the electric hand tool device 2 does not coincide with an authorization code signal received from the external device 6, both the electric hand tool device 2 and the battery pack become 4 is set in an operation prohibited state. For example, this can prevent the control electronics 26 of the battery pack 4 via a switch, not shown, a current or voltage delivery of the battery cells to a consumer until it is actively transferred from this operating blocking state back into an operating release state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Portable Power Tools In General (AREA)
  • Battery Mounting, Suspending (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

The invention relates to a battery-operated electric hand tool device (2) comprising control electronics (14), a wirelessly and contactlessly responding transceiver (12), and a storage unit (16) in which an authorization code is stored, a locked mode of operation and a released mode of operation being distinguishable. In order to improve theft protection, a wire-bound or wireless interface (22) is provided from the control electronics (14) of the electric hand tool device to a battery pack (4) such that locking data can be transmitted from the control electronics (14) of the electric hand tool device (2) to the battery pack (4), be stored in a storage device (24) of the battery pack (4), and be read out of the storage device (24) again.

Description

Die Erfindung betrifft ein akkubetriebenes Elektrohandwerkzeuggerät mit einer Steuerelektronik und einer drahtlos und berührungslos ansprechbaren Sende-/Empfangseinrichtung und einer Speichereinrichtung, auf der ein Berechtigungscode hinterlegt ist, wobei ein Betriebssperrzustand und ein Betriebsfreigabezustand unterscheidbar sind. Weiter betrifft die Erfindung einen Akkupack hierfür.The invention relates to a battery-operated electric hand tool device with an electronic control unit and a wireless and contactless addressable transceiver and a memory device on which an authorization code is stored, wherein an operation lock state and an operation release state are distinguishable. Furthermore, the invention relates to a battery pack for this purpose.

Ein solches Elektrohandwerkzeuggerät wirkt dabei mit einem von einem Benutzer mitführbaren und weitgehend miniaturisierten externen separaten Gerät zusammen, welches eine batteriebetriebene Sende-Empfangseinrichtung aufweist. Unter Verwendung dieses separaten Steuergeräts ist es möglich, das Elektrohandwerkzeuggerät bewusst durch einen Benutzer veranlasst in einen Betriebssperrzustand oder in einen Betriebsfreigabezustand, in dem das Gerät benutzt werden kann, zu versetzen. Ein solches Elektrohandwerkzeuggerät ist beschrieben in DE 102 38 710 A1 und DE 103 09 703 A1 der Anmelderin. Die letztgenannte Druckschrift befasst sich damit, dass der Diebstahl von im Betriebsfreigabezustand befindlichen Elektrohandwerkzeuggeräten möglichst weitgehend unattraktiv gemacht werden soll, was dadurch erreicht wird, dass ausgehend von dem Elektrohandwerkzeuggerät von Zeit zu Zeit ein Berechtigungscodesignal von dem externen vom berechtigten Benutzer mitgeführten Gerät angefordert wird. Wird kein entsprechendes Berechtigungscodesignal empfangen, so wird das Gerät in den Sperrzustand versetzt und ist damit für einen unbefugten Entwender nicht mehr benutzbar.Such an electric hand tool device interacts with a user-led and largely miniaturized external separate device, which has a battery-operated transceiver device. Using this separate control device, it is possible to intentionally cause the electric hand tool device to be put into an operation lock state or a service release state in which the device can be used by a user. Such an electric hand tool device is described in DE 102 38 710 A1 and DE 103 09 703 A1 the applicant. The latter document is concerned with the fact that the theft of electrical hand tool devices located in the operating release state should be made largely unattractive, which is achieved by requesting an authorization code signal from the external device carried by the authorized user from the electric hand tool device from time to time. If no corresponding authorization code signal is received, This will put the device in the locked state, rendering it unavailable to an unauthorized stunner.

Es sind weitere Elektrohandwerkzeuggeräte mit Diebstahlschutzeinrichtungen in großem Umfang bekannt geworden. So wird gemäß DE 44 29 206 C2 eine Diebstahlschutzeinrichtung vorgeschlagen, bei der jeweils nach Einstecken eines frisch geladenen Akkus oder nach Einstecken des Netzanschlusssteckers des Elektrohandwerkzeuggeräts in die Netzsteckdose eine Prüfroutine abläuft, die das Vorhandensein eines währenddessen ständig zu sendenden Codesignals abprüft. Wird innerhalb einer bestimmten Zeitspanne kein Codesignal empfangen, so wird die Maschine in den Betriebssperrzustand versetzt. Wird jedoch das richtige Codesignal empfangen, so bleibt die Maschine so lange in einem Betriebsfreigabezustand, bis der Netzstecker gezogen oder wieder neu eingesteckt wird oder der Akku ausgewechselt wird oder entleert ist. Es wird also nach DE 44 29 206 C2 versucht, den Diebstahl dadurch unattraktiv zu machen, dass der Betriebsfreigabezustand bei Entfernen des Elektrohandwerkzeuggeräts vom Codesignalsender nur eine begrenzte Zeit, also längstens bis zum nächsten Akkuwechsel bestehen bleibt. Der erwähnte Codesignalsender ist nicht in einem externen, separat mitführbaren Gerät untergebracht sondern soll nach dieser Druckschrift ortsfest, beispielsweise in.einer Werkzeughalle vorgesehen sein. Auf diese Weise soll erreicht werden, dass das Elektrohandwerkzeuggerät nur an einem zulässigen Arbeitsplatz in Gebrauch genommen werden kann. Des weiteren erweist sich das erwähnte Gerät insoweit als nachteilig, als für ein ordnungsgemäßes Funktionieren, das Codesignal quasi ständig in Richtung auf die Handwerkzeugmaschine ausgesandt werden muss. Zumindest muss das Codesignal während einer Neuinbetriebnahme nach einem Akkuwechsel oder einem Einstecken des Netzsteckers über einen verhältnismäßig langen Zeitraum ausgesandt werden. Der Codesignalsender muss dabei mit Energie versorgt werden. Er muss also entweder mit einem Akkuladegerät verbunden sein, so dass zumindest stets nach Entnahme eines Akkus aus dem Ladegerät für eine längere Zeit das Codesignal ausgesandt wird, oder der Codesender muss dauerhaft mit einer Energieversorgung verbunden sein. Jedenfalls wäre es nicht möglich, den Codesignalsender in einem externen, separat mitführbaren Gerät vorzusehen, da die benötigte Energieversorgung aus praktischen Gründen nicht mit üblichen Batterien gewährleistet werden könnte. Bei Zugrundelegung des aus DE 44 29 206 C2 bekannten Konzepts wäre die Ausbildung der Codesignalsender als externes mitführbares Gerät, insbesondere in der Größe eines Schlüsselanhängers, aufgrund zu kurzer Batterielebensdauern nicht geeignet. Eine Diebstahlschutzeinrichtung für den Akkupack ist nicht vorgesehen.There are other electric hand tool devices with theft protection devices widely known. So is according to DE 44 29 206 C2 proposed an anti-theft device, in each case after insertion of a freshly charged battery or after plugging in the power connector of the electric power tool in the power outlet runs a test routine that checks the presence of a meanwhile constantly to be sent code signal. If no code signal is received within a certain period of time, the machine is placed in the operating lock state. However, if the correct code signal is received, the machine will remain in an operating release state until the power plug is unplugged or reinserted, or the battery is replaced or deflated. So it will be after DE 44 29 206 C2 Attempts to make the theft unattractive by the fact that the operating release state remains when removing the electric hand tool device from Codesignalsender only a limited time, ie at the longest until the next battery change. The aforementioned codesignalsender is not housed in an external, separately carried device but should be fixed according to this document, for example, be provided.iner tool hall. In this way it should be achieved that the electric hand tool device can only be taken at an acceptable workplace in use. Furthermore, the mentioned device proves to be disadvantageous, as for a proper functioning, the code signal must be quasi constantly sent out in the direction of the power tool. At the very least, the code signal must be displayed during a restart after a battery change or plugging in the power plug over a relatively long period of time to be sent out. The code signal transmitter must be supplied with energy. It must therefore be either connected to a battery charger, so that at least always after removal of a battery from the charger for a long time the code signal is emitted, or the code transmitter must be permanently connected to a power supply. In any case, it would not be possible to provide the Codesignalsender in an external, separately portable device, since the required power supply for practical reasons could not be guaranteed with conventional batteries. On the basis of the DE 44 29 206 C2 Known concept would be the formation of the code signal transmitter as an external portable device, especially in the size of a key fob, not suitable due to short battery life. An anti-theft device for the battery pack is not provided.

Weiterhin ist aus DE 100 29 138 A1 ein Elektrohandwerkzeuggerät mit einer Diebstahlschutzeinrichtung auf Transponderbasis bekannt. Dabei verfügt das Elektrohandwerkzeuggerät über eine Sende-/empfangseinrichtung. Seine Steuerelektronik ist stets bestrebt, einen Betriebssperrzustand einzunehmen, in dem das Gerät nicht betrieben werden kann. Wenn ein Benutzer das Gerät betreiben möchte, so benötigt er einen Transponder. Maschinenseitig wird ein elektromagnetisches Feld ausgesandt, das einen z. B. in einem Armband untergebrachten Transponder mit Energie versorgt, so dass dieser ein Berechtigungscodesignal abgibt, welches wiederum von der Sende-/empfangseinrichtung des Elektrohandwerkzeuggeräts empfangen wird. Dabei muss der Transponder aber in der unmittelbaren Nähe des Elektrohandwerkzeugs sein, da er ansonsten die zum Aussenden eines Berechtigungscodesignals erforderliche Energie nicht aufnehmen kann. Wenn das vom Transponder ausgesandte Berechtigungscodesignal mit dem in der Speichereinrichtung des Elektrohandwerkzeuggeräts hintergelegten Berechtigungscode übereinstimmt, so wird das Gerät in einen Betriebsfreigabezustand versetzt und kann betrieben werden. Die vorstehend beschriebene Abfrage wird dann diskontinuierlich durchgeführt. Nur solange diese Kommunikation einen autorisierten Nutzer ausweist, bleibt das Elektrohandwerkzeuggerät betriebsbereit.Furthermore, it is off DE 100 29 138 A1 an electric hand tool device with a theft protection on transponder basis known. In this case, the electric hand tool device has a transmitting / receiving device. Its control electronics always endeavor to assume an operational blocking state in which the device can not be operated. If a user wants to operate the device, he needs a transponder. On the machine side, an electromagnetic field is emitted, the z. B. accommodated in a bracelet transponder with energy, so that it emits an authorization code signal, which in turn is received by the transmitting / receiving device of the electric power tool. However, the transponder must be in the immediate vicinity of the electric hand tool, as he otherwise the to Sending an authorization code signal can not absorb required energy. If the authorization code signal emitted by the transponder coincides with the authorization code stored in the storage device of the electric hand tool device, the device is put into an operating release state and can be operated. The above-described query is then carried out batchwise. Only as long as this communication identifies an authorized user, the electric hand tool device remains operational.

Ein Transponder entnimmt die zum Funktionieren erforderliche Energie dem auf ihn einwirkenden elektromagnetischen Feld. Deshalb ist es auch zwingend erforderlich, dass der Transponder in unmittelbare Nähe des Elektrohandwerkzeuggeräts gebracht wird, um eine Freischaltung des Geräts zu ermöglichen. Sobald sich ein Benutzer kurzzeitig entfernt, schaltet das Gerät wieder in den Betriebssperrzustand, was sich in der Praxis als lästig erweisen kann. Eine Diebstahlschutzeinrichtung für den Akkupack ist nicht vorgesehen.A transponder extracts the energy required for functioning from the electromagnetic field acting on it. Therefore, it is also imperative that the transponder is placed in the immediate vicinity of the electric hand tool device to enable activation of the device. As soon as a user moves away for a short time, the device switches back to the operating lock state, which can prove annoying in practice. An anti-theft device for the battery pack is not provided.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den Diebstahl von akkubetriebenen Elektrohandwerkzeuggeräten und von Akkupacks hierfür noch unattraktiver zu machen.The present invention has for its object to make the theft of battery-powered electric hand tool and battery packs even more unattractive.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass eine drahtgebundene oder drahtlose Schnittstelle von der Steuerelektronik des Elektrohandwerkzeuggeräts zu einem Akkupack vorgesehen ist, so dass Schließinformationen von der Steuerelektronik des Elektrohandwerkzeuggeräts zu dem Akkupack übermittelbar und in einer Speichereinrichtung des Akkupacks hinterlegbar und aus der Speichereinrichtung wieder auslesbar sind.This object is achieved in that a wired or wireless interface is provided by the control electronics of the electric power tool to a battery pack, so that closing information from the control electronics of the electric hand tool to the battery pack übermittelbar and stored in a storage device of the battery pack and are read out again from the memory device ,

Auf die erfindungsgemäße Weise wird der Akkupack in die Diebstahlschutzeinrichtung des Elektrohandwerkzeuggeräts integriert oder mit einbezogen. Es wird die Schnittstelle des Elektrohandwerkzeuggeräts zu einer externen Sende-/Empfangseinrichtung gewissermaßen auch für den Akkupack genutzt. Schließinförmationen, welche das Elektrohandwerkzeuggerät von extern über seine Sende-/Empfangseinrichtung erhält werden über die erwähnte drahtgebundene oder drahtlose Schnittstelle zwischen der Steuerelektronik des Elektrohandwerkzeuggeräts und den Akkupacks an den Akkupack übertragen und dort gespeichert. Die Steuerelektronik des Elektrohandwerkzeuggeräts kann also aktiv den Diebstahlschutz auch für den Akkupack übernehmen, indem Schließinformationen an den Akkupack gegeben und in einer Speichereinrichtung des Akkupacks abgelegt werden können und andersherum Schließinformationen aus einer Speichereinrichtung des Akkupacks ausgelesen und in der Steuerelektronik des Elektrohandwerkzeuggeräts weiter verarbeitet werden können. Für diese Zwecke erweist es sich als vorteilhaft, dass in dem Akkupack nicht notwendigerweise eine hochentwickelte Steuerelektronik mit Auswertelogik und Rechenkapazität vorgesehen werden muss, sondern es genügt prinzipiell, dass ein über die Steuerelektronik des Elektrohandwerkzeuggeräts über die erwähnte Schnittstelle ansprechbare beziehungsweise abfragbare Speichereinrichtung in dem Akkupack vorgesehen ist. Es wird jedoch ausdrücklich darauf hingewiesen, dass in dem Akkupack auch Rechenkapazität zusätzlich, insbesondere zur Ausführung weiterer Funktionen und gegebenenfalls zum Zwecke des Zusammenwirkens mit einem Ladegerät vorgesehen sein kann.In the manner according to the invention, the battery pack is integrated or included in the theft protection device of the electric hand tool device. The interface of the electric hand tool device to an external transmitting / receiving device is to a certain extent also used for the battery pack. Closing information, which receives the electric hand tool from the outside via its transmitting / receiving device via the mentioned wired or wireless interface between the control electronics of the electric hand tool and the battery packs to the battery pack and stored there. The control electronics of the electric hand tool device can thus actively take over the theft protection for the battery pack by closing information can be stored on the battery pack and stored in a storage device of the battery pack and vice versa closing information read from a storage device of the battery pack and processed in the control electronics of the electric hand tool. For these purposes, it proves to be advantageous that in the battery pack not necessarily a sophisticated control electronics with evaluation logic and computing capacity must be provided, but it is sufficient in principle that provided via the control electronics of the electric hand tool device via the mentioned interface addressable or interrogatable storage device in the battery pack is. However, it is expressly pointed out that computing capacity may additionally be provided in the battery pack, in particular for carrying out further functions and optionally for the purpose of cooperating with a charger.

Es wäre denkbar und vorteilhaft, dass die Steuerelektronik des Elektrohandwerkzeuggeräts so ausgebildet ist, dass Schließinformationen zu einem oder mehreren vorbestimmten Zeitpunkten oder Zeitintervallen oder beim Vorliegen vorgegebener oder vorgebbarer Bedingungen über die Schnittstelle an den Akkupack übertragen und/oder aus der Speichereinrichtung des Akkupacks ausgelesen werden. Es ist dann auf diese Weise möglich, immer wieder zu überprüfen beziehungsweise sicherzustellen, dass für den gerade eingesetzten und verwendeten Akkupack eine Benutzüngsberechtigung besteht.It would be conceivable and advantageous that the control electronics of the electric hand tool device is designed so that closing information to one or more predetermined Time points or time intervals or in the presence of predetermined or predefinable conditions transmitted via the interface to the battery pack and / or be read from the memory device of the battery pack. It is then possible in this way to check again and again or ensure that there is a Nutzüngberechtigung for the battery pack currently in use and used.

In vorteilhafter Weise kann die Steuerelektronik des Elektrohandwerkzeuggeräts auch so ausgebildet sein, dass beim verbinden eines Akkupacks mit dem Elektrohandwerkzeuggerät ein in der Speichereinrichtung des Elektrohandwerkzeuggeräts gespeicherter Berechtigungscode oder eine Schließinformation im weitesten Sinn automatisch über die Schnittstelle zu dem Akkupack übertragen und dort in der Speichereinrichtung des Akkupacks gespeichert wird und/oder ein in der Speichereinrichtung des Akkupacks gespeicherter Berechtigungscode ausgelesen und über die Schnittstelle an die Steuerelektronik des Elektrohandwerkzeuggeräts gegeben wird.Advantageously, the control electronics of the electric hand tool device can also be designed so that when connecting a battery pack with the electric hand tool a stored in the memory device of the electric hand tool device authorization code or a closing information in the broadest sense automatically transmitted via the interface to the battery pack and there in the memory device of the battery pack is stored and / or read an stored in the memory device of the battery pack authorization code and is given via the interface to the control electronics of the electric power tool.

Weiter wird vorgeschlagen, die Steuerelektronik des Elektrohandwerkzeuggeräts so auszubilden, dass ausgehend von einem Betriebsfreigabezustand des Elektrohandwerkzeuggeräts zu einem oder mehreren vorbestimmten Zeitpunkten oder beim Vorliegen vorgegebener oder vorgebbarer Bedingungen eine Berechtigungscodesignal-Anforderung an eine externe Sende-/Empfangseinrichtung in einem von einem Benutzer mitführbaren Gerät gesandt wird. Dies bringt den Vorteil mit sich, dass die externe Sende-/Empfangseinrichtung sich nicht ständig in einem Sendebetriebsmodus befinden muss, sondern es ist hinreichend, dass eine Empfangsbereitschaft für die erwähnte Berechtigungscodesignal-Anforderung vorgehalten wird.It is further proposed to design the control electronics of the electric hand tool device in such a way that starting from an operating release state of the electric hand tool device at one or more predetermined times or when predetermined or predefinable conditions are present, an authorization code signal request is sent to an external transceiver in a device that can be carried by a user becomes. This has the advantage that the external transceiver does not have to be constantly in a transmission mode, but it is sufficient that a readiness to receive the mentioned authorization code signal request is maintained.

In noch weitergehender Ausbildung dieses Gedankens ist die externe Sende-/Empfängseinrichtung so ausgebildet, dass bei Empfang einer Berechtigungscodesignal-Anforderung ein Sendebetriebsmodus aktivierbar ist und ein Berechtigungscodesignal an die Sende-/Empfangseinrichtung des Elektrohandwerkzeuggeräts gesandt wird und danach der Sendebetriebsmodus wieder selbsttätig deaktivierbar ist. Auf diese Weise ist ein energiesparender Betrieb der externen Sende-/Empfangseinrichtung möglich, die über lange Zeiträume durch eine Batterie mit Energie versorgt werden kann.In a further development of this idea, the external transceiver is designed so that upon receipt of an authorization code signal request, a transmission mode is activated and an authorization code signal is sent to the transmitting / receiving device of the electric hand tool and then the transmission mode is again automatically deactivated. In this way, an energy-saving operation of the external transceiver is possible, which can be powered by a battery for long periods of energy.

Weiter ist die Steuerelektronik und die Sende-/Empfangseinrichtung des Elektrohandwerkzeuggeräts so ausgebildet, dass nach Auswertung des empfangenen Berechtigungscodesignals und vergleich mit dem in der Speichereinrichtung des Elektrohandwerkzeuggeräts hinterlegten Berechtigungscode und mit dem in der Speichereinrichtung des Akkupacks hinterlegten und über die Schnittstelle auslesbaren Berechtigungscode das Elektrohandwerkzeuggerät entweder im Betriebsfreigabezustand verbleibt oder in den Betriebssperrzustand versetzt wird. Es wird also wiederum der Akkupack vermittels der dort gespeicherten Schließinformation mit in den Diebstahlschutz des Elektrohandwerkzeuggeräts einbezogen. Sollten zu vergleichende Schließinformationen nicht übereinstimmen, ein Vergleich also ergeben, dass entweder das Elektrohandwerkzeuggerät oder der Akkupack keine gespeicherten Informationen aufweisen, die beispielsweise mit einer von der genannten externen Sende-/Empfangseinrichtung ausgesandten Berechtigungsinformation (Code Key) übereinstimmen, so wird der weitere Betrieb des Geräts dadurch untersagt, dass sowohl das Elektrohandwerkzeuggerät als auch der Akkupack in einen Betriebssperrzustand versetzt werden.Next, the control electronics and the transmitting / receiving device of the electric power tool is designed so that after evaluation of the received authorization code signal and comparison with the stored in the memory device of the electric hand tool device authorization code and stored in the memory device of the battery pack and readable via the interface authorization code, the electric hand tool either remains in the operation enable state or is set in the operation prohibited state. It is therefore in turn the battery pack by means of the locking information stored there with included in the theft protection of the electric power tool. If comparative information to be compared does not match, a comparison thus results in that either the electric hand tool device or the battery pack has no stored information, for example, with an authorization information transmitted by said external transceiver (Code key), the further operation of the device is prohibited by the fact that both the electric hand tool device and the battery pack are put into an operating lock state.

Des Weiteren erweist es sich als vorteilhaft, wenn das Elektrohandwerkzeuggerät eine Anzeigeeinrichtung aufweist für die Anzeige des Betriebszustands (Freigabezustand oder Sperrzustand) des Elektrohandwerkzeuggeräts und des Betriebszustands des Akkupacks.Furthermore, it proves to be advantageous if the electric hand tool device has a display device for displaying the operating state (release state or blocking state) of the electric hand tool device and the operating state of the battery pack.

Weitere Merkmale, Einzelheiten und Vorteile ergeben sich aus der zeichnerischen Darstellung und nachfolgenden Beschreibung einer bevorzugten Ausführungsform des erfindungsgemäßen akkubetriebenen Elektrohandwerkzeuggeräts. In der Zeichnung zeigt:

Figur 1
eine schematische Darstellung eines erfindungsgemäßen Elektrohandwerkzeuggeräts mit einem Akkupack und einem von einem Berechtigten mitführbaren Gerät mit einer externen Sende- /Empfangseinrichtung zur Übermittlung von Schließinformationen.
Further features, details and advantages will become apparent from the drawings and the following description of a preferred embodiment of the battery-powered electric hand tool device according to the invention. In the drawing shows:
FIG. 1
a schematic representation of an electric hand tool device according to the invention with a battery pack and carried by a person entitled device with an external transmitting / receiving device for transmitting closing information.

Figur 1 zeigt ein insgesamt mit dem Bezugszeichen 2 bezeichnetes akkubetriebenes Elektrohandwerkzeuggerät mit einem damit verbundenen Akkupack 4 und mit einem externen von einem berechtigten Benutzer mitführbaren batteriebetriebenen Gerät 6 mit einer schematisch angedeuteten externen Sende-/Empfangseinrichtung 8. Die Sende-/Empfangseinrichtung 8 vermag über eine Schnittstellenverbindung 10, vorzugsweise eine drahtlose und berührungslos funktionierende Schnittstelle, wie zum Beispiel eine optische Schnittstelle (z. B. Infrarot-Schnittstelle), mit einer Sende-/Empfangseinrichtung 12 des Elektrohandwerkzeuggeräts zu kommunizieren. Diese wirkt mit einer Steuerelektronik 14 in dem Elektrohandwerkzeuggerät zusammen, wobei über die Schnittstelle 10 erhaltene Informationen in einer Speichereinrichtung 16 abgelegt und von dort wieder ausgelesen werden können. Bei diesen Informationen kann es sich um einen einen autorisierten Benutzer ausweisenden Berechtigungscode handeln. In der Speichereinrichtung 6 können aber auch sonstige Betriebsparameter., welche das Elektrohandwerkzeuggerät oder dessen Betrieb betreffen, hinterlegt sein. Informationen oder Daten, welche Verwendung finden, um das Elektrohandwerkzeuggerät in einen Betriebssperrzustand oder einen Betriebsfreigabezustand zu versetzen, werden im Folgenden auch als Schließinformationen bezeichnet. Wie in DE 103 09 703 A1 der Anmelderin beschrieben, kann über das externe von einem autorisierten Benutzer mitführbare Gerät 6 eine solche Schließinformation über die Schnittstelle 10 an das Elektrohandwerkzeuggerät 2 gegeben und dort in der Speichereinrichtung 6 hinterlegt werden. Diese dort hinterlegte Schließinformation wird nach vorgegebenen oder vorgebbaren Zeitintervallen für eine Prüfung verwendet, ob das Elektrohandwerkzeuggerät ausgehend von einem Betriebsfreigabezustand weiter betrieben werden kann oder in einen Sperrzustand versetzt wird. Beispielsweise kann die Steuerelektronik 14 des Elektrohandwerkzeuggeräts 2 so ausgebildet sein, dass sie nach vorgegebenen oder vorgebbaren zeitintervallen oder beim Vorliegen vorgegebener oder vorgebbarer Bedingungen über die geräteinterne Sende-/Empfangseinrichtung eine Berechtigungscodesignal-Anfrage über die Schnittstelle 10 an das externe Gerät sendet. Diese Berechtigungscodesignal-Anfrage wird von dem externen Gerät 6 über dessen Sende-/Empfangseinrichtung empfangen, und daraufhin wird das externe Gerät 6 aktiviert, das heißt ausgehend von einem energiesparenden Empfangsmodus in einen aktiven Sendemodus überführt. Das Gerät 6 beziehungsweise dessen Steuerelektronik veranlasst dann die Aussendung eines vorgegebenen oder vorgebbaren Berechtigungscodesignals über die Schnittstelle 10 an das Elektrohandwerkzeuggerät 2. Dieses Signal wird über dessen Sende-/Empfangseinrichtung 12 empfangen und durch dessen Steuerelektronik 14 ausgewertet, dass heißt der Informationsgehalt des Signals wird ermittelt und mit den in der Speichereinrichtung 16 abgelegten Schließinformationen verglichen. Stimmt der Berechtigungscode, so bleibt das Elektrohandwerkzeuggerät im freigegebenen Zustand. Stimmt der Code nicht oder erhält das Elektrohandwerkzeuggerät keine Antwort auf seine Berechtigungscodesignal-Anfrage, etwa weil das Gerät unbefugt entwendet wurde, also sich entfernt vom autorisierten Benutzer und dessen externem Gerät 6 befindet, so wird das Elektrohandwerkzeuggerät in den Betriebssperrzustand versetzt. Ein Weiterbetrieb ist dann nicht möglich. Diese Maßnahme der Versetzung in den Sperrzustand ist in Figur 1 schematisch durch einen Schalter 18 zur Unterbrechung der Strom- beziehungsweise Spannungsversorgung eines Elektromotors 20 angedeutet. FIG. 1 1 shows a battery-operated electric hand tool device, generally designated by the reference numeral 2, with a battery pack 4 connected thereto and with an external battery-operated device 6 that can be carried by an authorized user, with a schematically indicated external transceiver device 8. The transceiver device 8 is capable of being connected via an interface connection 10 , preferably a wireless and non-contact interface, such as an optical interface (eg, infrared interface), to communicate with a transceiver 12 of the handheld power tool. This interacts with an electronic control unit 14 in the electric hand tool device, wherein information obtained via the interface 10 can be stored in a memory device 16 and read from there again. This information may be an authorization code identifying an authorized user. In the memory device 6 but also other operating parameters., Which relate to the electric hand tool or its operation, be deposited. Information or data used to place the power hand tool device in an operation lock state or an operation release state will also be referred to as closing information hereinafter. As in DE 103 09 703 A1 As described by the applicant, such closing information can be transmitted via the interface 10 via the external device 6 which can be carried by an authorized user be given to the electric hand tool 2 and stored there in the memory device 6. This closing information stored there is used after predetermined or predefinable time intervals for a check as to whether the electric hand tool device can continue to be operated from an operating release state or is put into a blocking state. For example, the control electronics 14 of the electric hand tool device 2 may be designed so that it sends an authorization code signal request via the interface 10 to the external device after predetermined or predeterminable time intervals or in the presence of predetermined or predefinable conditions via the device's internal transmitting / receiving device. This authorization code signal request is received by the external device 6 via its transmitting / receiving device, and then the external device 6 is activated, that is, transferred from an energy-saving reception mode in an active transmission mode. The device 6 or its control electronics then causes the transmission of a predetermined or predetermined authorization code signal via the interface 10 to the electric hand tool 2. This signal is received via the transmitting / receiving device 12 and evaluated by the control electronics 14, that is, the information content of the signal is determined and compared with the stored in the memory device 16 closing information. If the authorization code is correct, the electric hand tool device remains in the released state. If the code is not correct or if the electric hand tool device does not receive an answer to its authorization code signal request, for example because the device was stolen without authorization, ie is located away from the authorized user and his external device 6, then the electric hand tool device is set to the operating blocking state. A further operation is then not possible. This measure of dislocation in the locked state is in FIG. 1 schematically indicated by a switch 18 for interrupting the power or power supply of an electric motor 20.

Erfindungsgemäß ist auch der Akkupack 4 in den wie vorstehend beschriebenen Diebstahlschutz mit integriert. Das Elektrohandwerkzeuggerät verfügt über eine weitere, drahtgebundene oder drahtlose Schnittstelle 22 zwischen der Steuerelektronik 14 und dem Akkupack 4. Die Schnittstelle 22 ist vorzugsweise so ausgebildet, dass sie nur dann aktiv ist, wenn das Elektrohandwerkzeuggerät mit dem Akkupack 4 zum bestimmungsgemäßen Gebrauch verbunden ist. Es wäre aber auch denkbar, die Schnittstelle 22 drahtlos und berührungslos so auszubilden, dass eine bidirektionale Kommunikation zwischen Elektrohandwerkzeuggerät 2 und Akkupack 4 auch dann möglich ist, wenn diese zwar in der Nähe voneinander jedoch (noch) nicht zum bestimmungsgemäßen Gebrauch miteinander verbunden sind. Über die Schnittstelle 22 können von dem externen Gerät 6 erhaltene Schließinformationen im weitesten Sinn von der Steuerelektronik 14 des Elektrohandwerkzeuggeräts an den Akkupack 4 übertragen werden und dort in einer Speichereinrichtung 24 hinterlegt beziehungsweise aus dieser Speichereinrichtung 24 wieder ausgelesen werden. Es wäre an sich hinreichend, dass der Akkupack 4 nur eine Speichereinrichtung 24 aufweist, die ausgehend von der Steuerelektronik 14 des Elektrohandwerkzeuggeräts 2 beschrieben und ausgelesen werden kann. Es wäre aber auch denkbar und vorteilhaft, dass der Akkupack 4, insbesondere wenn er als Lithiumionen-Akkupack ausgebildet ist, eine eigene Steuerelektronik 26 umfasst. Gerade in diesem Fall wäre es auch denkbar und vorteilhaft, dass der Akkupack selbst über eine drahtlose und berührungslos ansprechbare Sende-/Empfangseinrichtung 28 verfügt, die prinzipiell eine Schnittstelle 30 mit dem externen Gerät 6 darstellen könnte.According to the invention, the battery pack 4 is also integrated in the anti-theft protection as described above. The electrical hand tool device has a further, wired or wireless interface 22 between the control electronics 14 and the battery pack 4. The interface 22 is preferably designed so that it is only active when the electric hand tool device is connected to the battery pack 4 for its intended use. However, it would also be conceivable to form the interface 22 wirelessly and without contact in such a way that bidirectional communication between the electric hand tool 2 and the battery pack 4 is possible even if they are not yet connected to one another in the vicinity of each other. Via the interface 22 closing information obtained from the external device 6 can be transmitted in the broadest sense of the control electronics 14 of the electric hand tool device to the battery pack 4 and stored there in a memory device 24 or read out of this memory device 24 again. It would be sufficient in itself that the battery pack 4 has only one memory device 24, which can be described and read starting from the control electronics 14 of the electric hand tool device 2. But it would also be conceivable and advantageous that the battery pack 4, in particular if it is designed as a lithium-ion battery pack, own control electronics 26 includes. Especially in this case, it would also be conceivable and advantageous that the battery pack itself has a wireless and contactless addressable transmitting / receiving device 28, which in principle has a Interface 30 with the external device 6 could represent.

Das Elektrohandwerkzeuggerät 2 beziehungsweise seine Steuerelektronik 4 ist bei einer bevorzugten Ausführungsform der Erfindung so ausgebildet, dass über die Schnittstelle 10 erhaltene Schließinformationen sowohl in der geräteinternen Speichereinrichtung 16 abgelegt werden als auch über die Schnittstelle 22 an den Akkupack 4 gegeben und in der Speichereinrichtung 24 des Akkupacks hinterlegt werden. Wenn bei einer daraufhin erfolgenden Berechtigungsabfrage entweder die in der Speichereinrichtung 24 des Akkupacks 4 gespeicherten Schließinformationen oder die in der Speichereinrichtung 16 des Elektrohandwerkzeuggeräts 2 gespeicherten Schließinformationen nicht mit einem von dem externen Gerät 6 empfangenen Berechtigungscodesignal übereinstimmen, so wird sowohl das Elektrohandwerkzeuggerät 2 als auch der Akkupack 4 in einen Betriebssperrzustand versetzt. Beispielsweise kann hierfür die Steuerelektronik 26 des Akkupacks 4 über einen nicht dargestellten Schalter eine Strom- beziehungsweise Spannungsabgabe der Akkuzellen an einen Verbraucher solange verhindern, bis sie aktiv aus diesem Betriebssperrzustand wieder in einen Betriebsfreigabezustand versetzt wird.The electric hand tool 2 or its control electronics 4 is formed in a preferred embodiment of the invention that are obtained via the interface 10 closing information stored both in the device-internal memory device 16 and given via the interface 22 to the battery pack 4 and in the memory device 24 of the battery pack be deposited. If, in a subsequent authorization check, either the closing information stored in the memory device 24 of the battery pack 4 or the closing information stored in the memory device 16 of the electric hand tool device 2 does not coincide with an authorization code signal received from the external device 6, both the electric hand tool device 2 and the battery pack become 4 is set in an operation prohibited state. For example, this can prevent the control electronics 26 of the battery pack 4 via a switch, not shown, a current or voltage delivery of the battery cells to a consumer until it is actively transferred from this operating blocking state back into an operating release state.

Claims (8)

  1. A battery operated hand-held power tool (2) with a control electronics (14) and a transceiving device (12) that can be addressed in a wireless and non-contact fashion as well as a storage device (16) in which an authorization code is stored, whereby a locked mode of operation and a released mode of operation can be distinguished, characterized in that a wired or a wireless interface (22) from the control electronics (14) of the hand-held power tool to a battery pack (4) is provided, such that locking data can be transmitted from the control electronics (14) of the hand-held power tool (2) to the battery pack (4) and can be stored in a storage device (24) of the battery pack (4) and can be retrieved again from the storage device (24).
  2. A hand-held power tool as set forth in claim 1, characterized in that the control electronics (14) of the hand-held power tool is designed such that locking data are transmitted to the battery pack (4) or retrieved from the storage device (24) of the battery pack (4) via the interface (22) at one or more predetermined times or time intervals or when specified or specifiable conditions are present.
  3. A hand-held power tool as set forth in claim 1 or 2, characterized in that the control electronics (14) of the hand-held power tool is designed such that when connecting a battery pack (4) with the hand-held power tool (2), an authorization code that is stored in the storage device (16) of the hand-held power tool (2) is automatically transmitted via the interface (22) to the battery pack (4) and is there stored in the storage device (24) of the battery pack (4) and/or an authorization code that is stored in the storage device (24) of the battery pack (4) is retrieved-and provided to the control electronics (14) of the hand-held power tool via the interface (22).
  4. A hand-held power tool as set forth in claim 1, 2 or 3, characterized in that the control electronics (14) and the transceiving device (12) of the hand-held power tool are designed such that starting with the released mode of operation of the hand-held power tool (2) an authorization code signal request is transmitted to an external transceiving device (8) at one or more predetermined times or when specified or specifiable conditions are present.
  5. A hand-held power tool as set forth in claim 4, characterized in that the external transceiving device (8) is designed such that upon reception of an authorization code signal request, a transmission operating mode can be activated and an authorization code signal is transmitted to the transceiving device (12) of the hand-held power tool (2) and that thereafter the transmission operating mode can be deactivated again automatically.
  6. A hand-held power tool as set forth in one of the previous claims, characterized in that the control electronics (14) and the transceiving device (12) of the hand-held power tool (2) are designed such that after evaluation of the received authorization code signal and comparison with the authorization code stored in the storage device (16) of the hand-held power tool and with the authorization code of the hand-held power tool (2) stored in the storage device (24) of the battery pack (4) and readable via the interface (22), the hand-held power tool (2) either remains in the released mode of operation or is placed in the locked mode of operation.
  7. A hand-held power tool as set forth in one of the previous claims, characterized by a display device for displaying the operating mode of the hand-held power tool (2) and the operating mode of the battery pack (4).
  8. A hand-held power tool as set forth in one of the previous claims, characterized in that the battery pack (4) exhibits its own transceiving device (28) that can be addressed in a wireless and non-contact fashion and that forms an interface (30) to an external transceiving device (8).
EP05803863A 2005-11-18 2005-11-18 Electric hand tool device and battery pack therefor Expired - Lifetime EP1949345B1 (en)

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US8169298B2 (en) 2012-05-01
CN101305404B (en) 2010-05-12
DE502005008889D1 (en) 2010-03-04
CN101305404A (en) 2008-11-12
ATE455340T1 (en) 2010-01-15
EP1949345A1 (en) 2008-07-30
US20080238609A1 (en) 2008-10-02

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