EP2993741B1 - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- EP2993741B1 EP2993741B1 EP15175083.3A EP15175083A EP2993741B1 EP 2993741 B1 EP2993741 B1 EP 2993741B1 EP 15175083 A EP15175083 A EP 15175083A EP 2993741 B1 EP2993741 B1 EP 2993741B1
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- EP
- European Patent Office
- Prior art keywords
- power tool
- power
- tool according
- circuit board
- mains
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
Definitions
- the invention relates to a power tool with a mains plug with a mains cable for supplying the power tool with electrical energy from an electrical network, with a control device for the power tool.
- Electronic circuits are used on hand-held power tools to control a motor as a function of operating states. Electronic circuits of this type are usually arranged inside the power tool and therefore require installation space in the power tool, which can increase its overall dimensions.
- a remote controllable outlet is known.
- the socket has a circuit board.
- a remote switch circuit is provided on the circuit board.
- the circuit board has a relay controlled by the remote switch circuit.
- EP 1 006 766 A2 discloses an electronic device with a two-part housing for accommodating a carrier substrate carrying an electronic circuit, with a first housing part made of plastic having an integrated connector body made of plastic.
- a metallic heat-conducting device is arranged on the first housing part, on which side the carrier substrate carrying the electronic circuit is attached, pointing into the interior of the housing.
- a power plug which has a charging device and an additional memory. Data from a device powered by a battery can be stored in the additional memory.
- the device can be an electronic device such as a mobile phone.
- Out of WO2010108360 A1 a power plug is known that includes a circuit board and provides a loss protection function.
- An object of the invention is to provide an improved power tool.
- a power tool with a mains plug with a mains cable for supplying the power tool with electrical energy from an electrical network with a control device for the power tool having a circuit board with an electronic power component arranged thereon, characterized in that the circuit board in the mains plug is arranged and is intended to provide electronic functions for the power tool on the board, wherein the board can be connected to components of the power tool via a data connection.
- the power tool can be made smaller and it can save surrounding components (such as an electronics housing, casting compound, etc.) for the control device, because the said surrounding components are largely provided by the power plug.
- Means are provided for dissipating thermal energy from the power component. In this way, overheating of the power component in the mains plug can be largely avoided during operation of the power tool.
- a further advantageous development is characterized in that the power component is connected, at least in sections, directly or by means of a thermally conductive connection to a stranded wire of a mains cable. In this way, thermal energy can be easily dissipated from the power component into the mains cable of the power tool.
- thermally conductive connection is soldered or riveted or screwed to the stranded wire. In this way, different technical options for dissipating heat from the power component are advantageously provided.
- a further advantageous development provides that a heat sink is arranged on the power component. As a result, thermal energy can advantageously be dissipated to an increased extent by the control device.
- a further advantageous development is characterized in that the heat sink is riveted to the power component or is in contact with the power component by overmolding with a casting compound. In this way, too, different variants of an effective heat dissipation from the power component can be implemented.
- a further advantageous development provides that the heat sink has elevations that extend into openings in the mains plug. In this way, a solution for more powerful devices can be implemented that allows even more heat to be dissipated. This can be advantageous for overload operation of the power tool or for brief storage of heat in the heat sink.
- the mains plug has a thermally conductive plastic. In this way it is possible, for example, to implement a heat dissipation device in an injection molding process for the mains plug.
- a further embodiment is characterized in that the plastic has integrally formed cooling ribs. In this way, the surface area of the mains plug can be increased in a simple manner, and thus an increased amount of heat dissipated.
- the circuit board can be connected to components of the power tool via a data connection. In this way, functional communication can be provided between the circuit board and the power component and the power tool. For example, this can be useful for querying a tool temperature or other parameters of the power tool through the circuit board.
- FIG. 1 shows a power tool 200 (for example an angle grinder) with a partially open housing in a lower illustration.
- a conventional control device 100 can be seen within a frame, which has a casting compound under which an electronic assembly, ie a circuit board 10 with a power component 20 and optionally further electronic components are arranged (not visible).
- an electronic assembly ie a circuit board 10 with a power component 20 and optionally further electronic components are arranged (not visible).
- a circuit board 10 or printed circuit board with a power component 20 can be seen, wherein it can be seen that the circuit board 10 in the upper illustration is about two to three times smaller than an electronic module or circuit board 10 in the conventional control device 100 in the lower illustration.
- 2 shows in two representations a comparison of a conventional electrical mains plug 30 with a mains line or mains cable 40 and the circuit board 10 mentioned, from which it can be seen that the circuit board 10 can be accommodated completely within the mains plug 30 due to the size relations.
- the two representations of 2 are only to be considered qualitatively, with, for example, the dimensions and alignments of the three contact lugs or circuit board plugs of the circuit board 10 not necessarily having to correspond to the actual requirements for insertion into the mains plug 30 .
- the control device 100 comprises a mains plug 30 with plug pins 31 and a mains cable 40 via which a power tool 200 (not shown) is supplied with electrical energy from an electrical network.
- a circuit board or printed circuit board 10 is provided, on which an electronic power element 20 (eg in the form of a triac for motor control) is arranged.
- the power component 20 is arranged completely within the mains plug 30, for example encapsulated with casting compound.
- a functional communication of the circuit board 10 and/or the power component 20 with the power tool 200 is provided.
- motor control functions that require, for example, a detection of motor temperature and/or other motor parameters or communication with components of the power tool 200 (e.g. an on/off switch)
- one or more communication or control lines im Power cord 40 are arranged (not shown).
- wireless communication between the power tool 200 and the circuit board 10 with the power component 20 can also be provided for the purposes of said communication.
- the power component 20 may switch the full electrical operating current of the motor of the power tool 200. It can therefore be beneficial to provide heat dissipation for power tools 200 with higher power , in order to avoid overheating and thus damage to the power component 20 .
- the embodiment of the control device 100 illustrated in principle provides that the heat is dissipated from the power component 20 to a line metal (usually copper or stranded copper wire) of the mains cable 40 .
- a line metal usually copper or stranded copper wire
- This is possible, for example, by means of a thermally conductive connection 50 in that the power component 20 is connected to a stripped strand of the mains cable 40, for example by means of a soldered connection.
- the heat is dissipated from the power component 20 to a cooling plate or a heat sink 60 and subsequently to the ambient air. So not fingers of one When the power plug 30 is pulled, the user can come into contact with the heat sink 60 that has become hot, a covering structure is provided in the housing of the power plug 30 .
- this can be embodied in the plug housing in the form of a lattice, with resulting openings 32 for the escape of heat.
- FIG. 5a and 5b shows such openings 32.
- the plug housing is equipped with an additional function, which provides two hooks 33 as cable holding aids at the cable outlet end, which facilitate the winding and holding together of the mains cable 40 to the power tool 200.
- Such mains plugs 30 with an additional function generally have somewhat larger external dimensions and are therefore particularly suitable for accommodating a circuit board 10 on the inside.
- a particularly large heat sink 60 for power tools 200 with a particularly high motor output can also be advantageously accommodated here.
- FIG 6a 1 shows one embodiment of the heat sink 60 as a specifically shaped sheet metal plate ("heatsink").
- a heat sink 60 with a larger surface area with similar dimensions is alternatively possible, for example an aluminum extruded profile with ribs 61 that can be produced inexpensively, as in principle in Figure 6b shown.
- the ribs 61 extend into the openings 32 in the plug housing, as in FIG Figure 7a shown. As a result, they are able to dissipate heat to the surrounding air, but are slightly recessed with respect to the overall outer contour of the connector housing, which protects the user from burns due to an overheated heat sink 60.
- the countersinking of the ribs 61 in relation to the outer contour of the mains plug 30 can be seen Figure 7b , which shows a top view of the control device 100 of FIG Figure 7a indicates.
- the plug housing of the mains plug 30 is formed at least partially from thermally conductive plastic which has the required insulating properties with respect to the electrical mains voltage carried on the inside.
- the power plug 30 is made entirely of thermally conductive plastic.
- the circuit board 10 is embedded in this plastic in the same way as is known for mains cables 40 and plug pins 31 .
- the heat from the power component 20 can be dissipated to the ambient air via the thermally conductive plastic.
- Known shaping processes for plastics processing such as injection molding, offer a wide range of shaping options.
- the main part of the power plug 30 from conventional plastic and only to encapsulate the circuit board 10 with the power component 20 with the thermally conductive plastic. This is possible, for example, in a two-component injection molding process for cases where special material properties are required. As a result, greater elasticity can be achieved on the overall housing, for example for realizing an elastic area for a flexible cable grommet of the mains plug 30 .
- the difference between the thermally conductive plastic and the conventional plastic is indicated by different hatchings.
- FIG. 10 schematically shows a power tool 200 with a control device 100.
- FIG. 11 shows in principle a sequence of a method for producing a control device 100 for a power tool 200.
- a power component 20 is arranged on a circuit board 10 in a first step S1.
- circuit board 10 is arranged in a mains plug 30 for power tool 200.
- the present invention proposes a control device integrated in a mains plug with a power component for an electric tool.
- This is possible in a simple manner due to the miniaturized electronic assembly with SMD components, and compared to the conventional implementation, sealing compound within the power tool can be saved, which means space gain in the power tool, which as a result is built smaller.
- peripheral components can advantageously be saved, such as a component cup for the power component.
- the integration of the circuit board according to the invention is advantageously possible in any type of mains plug used, with any shape of the plug housing and any number of plug pins being possible.
- the person skilled in the art will recognize the possibility of an almost unlimited number of embodiments and will therefore also implement exemplary embodiments according to the appended claims that have not been disclosed or only partially disclosed above.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
Die Erfindung betrifft ein Elektrowerkzeug mit einem Netzstecker mit einem Netzkabel zum Versorgen des Elektrowerkzeuges aus einem elektrischen Netz mit elektrischer Energie mit einer Steuervorrichtung für das Elektrowerkzeug.The invention relates to a power tool with a mains plug with a mains cable for supplying the power tool with electrical energy from an electrical network, with a control device for the power tool.
An handgeführten Elektrowerkzeugen werden zu einer Steuerung eines Motors in Abhängigkeit von Betriebszuständen elektronische Schaltungen eingesetzt. Üblicherweise sind derartige elektronische Schaltungen im Inneren des Elektrowerkzeugs angeordnet und benötigen daher Bauraum des Elektrowerkzeugs, was seine Gesamtabmessung vergrößern kann.Electronic circuits are used on hand-held power tools to control a motor as a function of operating states. Electronic circuits of this type are usually arranged inside the power tool and therefore require installation space in the power tool, which can increase its overall dimensions.
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Eine Aufgabe der Erfindung ist es, ein verbessertes Elektrowerkzeug bereitzustellen.An object of the invention is to provide an improved power tool.
Die Aufgabe wird gelöst mit einem Elektrowerkzeug mit einem Netzstecker mit einem Netzkabel zum Versorgen des Elektrowerkzeuges aus einem elektrischen Netz mit elektrischer Energie mit einer Steuervorrichtung für das Elektrowerkzeug, aufweisend eine Platine mit einem darauf angeordneten elektronischen Leistungsbauelement,dadurch gekennzeichnet, dass die Platine in dem Netzstecker angeordnet ist und dazu vorgesehen ist, Elektronikfunktionen für das Elektrowerkzeug auf der Platine bereitzustellen, wobei die Platine mit Komponenten des Elektrowerkzeugs über eine Datenverbindung verbindbar sind. Vorteilhaft kann das Elektrowerkzeug dadurch kleiner ausgebildet werden und es können Umgebungsbauteile (z.B. ein Elektronikgehäuse, Vergußmasse, usw.) für die Steuervorrichtung eingespart werden, weil die genannten Umgebungsbauteile großteils vom Netzstecker bereitgestellt werden.The object is achieved with a power tool with a mains plug with a mains cable for supplying the power tool with electrical energy from an electrical network with a control device for the power tool, having a circuit board with an electronic power component arranged thereon, characterized in that the circuit board in the mains plug is arranged and is intended to provide electronic functions for the power tool on the board, wherein the board can be connected to components of the power tool via a data connection. Advantageously, the power tool can be made smaller and it can save surrounding components (such as an electronics housing, casting compound, etc.) for the control device, because the said surrounding components are largely provided by the power plug.
Im Ergebnis ist dadurch eine platz- und kostensparende Ansteuervorrichtung für das Elektrowerkzeug realisierbar.As a result, a space and cost-saving control device for the power tool can be implemented.
Vorteilhafte Weiterbildungen des Netzsteckers sind Gegenstand von Unteransprüchen.Advantageous developments of the power plug are the subject of dependent claims.
Mittel zum Abführen von thermischer Energie vom Leistungsbauelement vorgesehen sind. Auf diese Weise kann im Betrieb des Elektrowerkzeugs eine Überhitzung des Leistungsbauelements im Netzstecker weitestgehend vermieden werden.Means are provided for dissipating thermal energy from the power component. In this way, overheating of the power component in the mains plug can be largely avoided during operation of the power tool.
Eine weitere vorteilhafte Weiterbildung ist dadurch gekennzeichnet, dass das Leistungsbauelement wenigstens abschnittsweise direkt oder mittels einer Wärmeleitverbindung mit einer Litze eines Netzkabels verbunden ist. Auf diese Weise lässt sich auf einfache Weise thermische Energie vom Leistungsbauelement in das Netzkabel des Elektrowerkzeugs abführen.A further advantageous development is characterized in that the power component is connected, at least in sections, directly or by means of a thermally conductive connection to a stranded wire of a mains cable. In this way, thermal energy can be easily dissipated from the power component into the mains cable of the power tool.
Eine weitere vorteilhafte Weiterbildung zeichnet sich dadurch aus, dass die Wärmeleitverbindung mit der Litze verlötet oder vernietet oder verschraubt ist. Auf diese Weise werden vorteilhaft unterschiedliche technische Möglichkeiten für ein Abführen von Wärme des Leistungsbauelements bereitgestellt.A further advantageous development is characterized in that the thermally conductive connection is soldered or riveted or screwed to the stranded wire. In this way, different technical options for dissipating heat from the power component are advantageously provided.
Eine weitere vorteilhafte Weiterbildung sieht vor, dass auf dem Leistungsbauelement ein Kühlkörper angeordnet ist. Dadurch kann vorteilhaft thermische Energie in erhöhtem Ausmaß von der Steuervorrichtung abgeführt werden.A further advantageous development provides that a heat sink is arranged on the power component. As a result, thermal energy can advantageously be dissipated to an increased extent by the control device.
Eine weitere vorteilhafte Weiterbildung ist dadurch gekennzeichnet, dass der Kühlkörper mit dem Leistungsbauelement vernietet oder durch Umspritzen mit einer Vergußmasse am Leistungsbauteil anliegend ist. Auch auf diese Weise können unterschiedliche Varianten einer effektiven Wärmeabfuhr vom Leistungsbauelement realisiert werden.A further advantageous development is characterized in that the heat sink is riveted to the power component or is in contact with the power component by overmolding with a casting compound. In this way, too, different variants of an effective heat dissipation from the power component can be implemented.
Eine weitere vorteilhafte Weiterbildung sieht vor, dass der Kühlkörper Erhebungen aufweist, die sich in Öffnungen im Netzstecker erstrecken. Auf diese Weise kann eine Lösung für leistungsfähigere Geräte realisiert werden, die es erlaubt, noch mehr Wärme abzuführen. Dies kann für einen Überlastbetrieb des Elektrowerkzeugs oder für eine kurzzeitige Speicherung von Wärme im Kühlkörper vorteilhaft sein.A further advantageous development provides that the heat sink has elevations that extend into openings in the mains plug. In this way, a solution for more powerful devices can be implemented that allows even more heat to be dissipated. This can be advantageous for overload operation of the power tool or for brief storage of heat in the heat sink.
Eine weitere vorteilhafte Weiterbildung sieht vor, dass der Netzstecker einen wärmeleitfähigen Kunststoff aufweist. Auf diese Weise ist es möglich, beispielsweise in einem Spritzgießverfahren des Netzsteckers eine Wärmeabführungseinrichtung zu realisieren.A further advantageous development provides that the mains plug has a thermally conductive plastic. In this way it is possible, for example, to implement a heat dissipation device in an injection molding process for the mains plug.
Eine weitere Ausführungsform ist dadurch gekennzeichnet, dass der Kunststoff integral ausgebildete Kühlrippen aufweist. Auf diese Weise kann auf einfache Weise eine Vergrößerung der Oberfläche des Netzsteckers und damit ein erhöhtes Ausmaß von abgeführter Wärme erreicht werden.A further embodiment is characterized in that the plastic has integrally formed cooling ribs. In this way, the surface area of the mains plug can be increased in a simple manner, and thus an increased amount of heat dissipated.
Die Platine ist mit Komponenten des Elektrowerkzeugs über eine Datenverbindung verbindbar. Auf diese Weise kann eine funktionale Kommunikation zwischen der Platine und dem Leistungsbauelement und dem Elektrowerkzeug bereitgestellt werden. Beispielweise kann dies zu einer Abfrage einer Werkzeugtemperatur oder weiterer Kenngrößen des Elektrowerkzeugs durch die Platine sinnvoll sein.The circuit board can be connected to components of the power tool via a data connection. In this way, functional communication can be provided between the circuit board and the power component and the power tool. For example, this can be useful for querying a tool temperature or other parameters of the power tool through the circuit board.
Die Erfindung wird im Folgenden mit weiteren Merkmalen und Vorteilen anhand von mehreren Figuren im Detail beschrieben. Dabei bilden alle beschriebenen Merkmale, unabhängig von ihrer Darstellung in der Beschreibung bzw. in den Figuren und unabhängig von ihrer Rückbeziehung in den Patentansprüchen den Gegenstand der Erfindung. Die Figuren sind nicht notwendiger Weise maßstabsgetreu ausgeführt und sind insbesondere zu einer qualitativen und prinzipiellen Erläuterung der Erfindung gedacht.The invention is described in detail below with further features and advantages on the basis of several figures. All the features described form the subject matter of the invention, regardless of their representation in the description or in the figures and regardless of their reference in the patent claims. The figures are not necessarily true to scale and are intended in particular for a qualitative and basic explanation of the invention.
In den Figuren zeigt:
- Fig. 1
- Darstellungen eines herkömmlichen Elektrowerkzeugs und einer Platine mit einem Leistungsbauelement;
- Fig. 2
- Darstellungen eines Netzsteckers und einer Platine mit einem Leistungsbauelement;
- Fig. 3
- eine prinzipielle Darstellung einer Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 4
- eine weitere Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 5a, 5b
- eine weitere Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 6a, 6b
- Kühleinrichtungen für den erfindungsgemäßen Netzstecker;
- Fig. 7a, 7b
- eine weitere Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 8
- eine weitere Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 9
- eine weitere Ausführungsform des erfindungsgemäßen Netzsteckers;
- Fig. 10
- ein prinzipielles Blockschaltbilde eines Elektrowerkzeugs mit einer Steuervorrichtung; und
- Fig. 11
- einen prinzipiellen Ablauf eines Verfahrens zum Herstellen der Steuervorrichtung.
- 1
- Representations of a conventional power tool and a circuit board with a power component;
- 2
- Representations of a power plug and a circuit board with a power component;
- 3
- a schematic representation of an embodiment of the power plug according to the invention;
- 4
- another embodiment of the power plug according to the invention;
- Figures 5a, 5b
- another embodiment of the power plug according to the invention;
- Figures 6a, 6b
- Cooling devices for the power plug according to the invention;
- Figures 7a, 7b
- another embodiment of the power plug according to the invention;
- 8
- another embodiment of the power plug according to the invention;
- 9
- another embodiment of the power plug according to the invention;
- 10
- a basic block diagram of a power tool with a control device; and
- 11
- a basic sequence of a method for producing the control device.
Da die Platine 10 mit dem Leistungsbauelement 20 vor allem zu einer Steuerung des Elektrowerkzeugs 200 vorgesehen ist, schaltet das Leistungsbauelement 20 unter Umständen den vollen elektrischen Betriebsstrom des Motors des Elektrowerkzeugs 200. Es kann daher günstig sein, für Elektrowerkzeuge 200 mit höherer Leistung eine Wärmeabfuhr vorzusehen, um eine Überhitzung und damit Schädigung des Leistungsbauelements 20 zu vermeiden.Since the
Hierzu ist in der in
Alternativ kann zu einer Wärmeabfuhr auch vorgesehen sein, die Wärme vom Leistungsbauelement 20 auf ein Kühlblech bzw. einen Kühlkörper 60 und in weiterer Folge an die Umgebungsluft abzuführen. Damit nicht Finger eines Benutzers beim Ziehen des Netzsteckers 30 mit dem heiß gewordenen Kühlkörper 60 in Berührung kommen können, wird eine Abdeckstruktur im Gehäuse des Netzsteckers 30 vorgesehen. Beispielsweise kann diese im Steckergehäuse gitterförmig, mit resultierenden Öffnungen 32 zum Wärmeaustritt ausgebildet sein.As an alternative to heat dissipation, it can also be provided that the heat is dissipated from the
Das Ausführungsbeispiel der
In einer weiteren Ausführungsform der Steuervorrichtung 100 ist auch denkbar, dass das Steckergehäuse des Netzsteckers 30 wenigstens teilweise aus wärmeleitfähigem Kunststoff gebildet ist, der die erforderlichen isolierenden Eigenschaften gegenüber der innen geführten elektrischen Netzspannung aufweist.In a further embodiment of the
In einer in
Nachfolgend sind spezifische Elektronikfunktionen für Elektrowerkzeuge 200, die auf der Platine 10 im Netzstecker 30 integriert werden können, aufgelistet, wobei die Auflistung lediglich exemplarisch und keineswegs abschließend ist:
- Wiederanlaufsperre, die es ermöglicht, dass
das Elektrowerkzeug 200 nach dem Ziehen und Widereinstecken des Netzsteckers 30 nicht anläuft, auch wenn der Werkzeugschalter in "Ein"-Position arretiert ist - Sanftanlauf, der es ermöglicht, dass
das Elektrowerkzeug 200 ohne Anlaufruck anläuft - Lastabhängige Motorsteuerung, die eine Drehzahl des Elektrowerkzeugs 200 (z.B. eine Bohrmaschine oder dgl.) unter Betriebslast nahezu konstant hält. Eine Regelgröße kann beispielsweise ein cos ϕ der elektrischen Netzspannung oder ein aufgenommener elektrischer Strom sein.
- Motorschutz, der mittels einer gemessenen Stromaufnahme und einer Motorabschaltung bei Überlast realisiert wird
- Ableitstromprüfung, die eine elektrische Spannungsverschleppung nach außen auf das Maschinengehäuse detektiert
- Restart interlock that allows the
power tool 200 not to start after unplugging and reinserting thepower cord 30, even if the tool switch is locked in the "on" position - Soft start that allows the
power tool 200 to start without a jerk - Load-dependent motor control that keeps the speed of the power tool 200 (eg a drill or the like) almost constant under operating load. One The controlled variable can be, for example, a cos φ of the electrical mains voltage or an electrical current drawn.
- Motor protection, which is implemented using a measured current consumption and motor shutdown in the event of an overload
- Leakage current test that detects electrical voltage spread to the outside of the machine housing
In einem ersten Schritt S1 wird ein Leistungsbauelement 20 auf einer Platine 10 angeordnet.A
In einem zweiten Schritt S2 wird die Platine 10 in einem Netzstecker 30 für das Elektrowerkzeug 200 angeordnet.In a second step S2,
Zusammenfassend wird mit der vorliegenden Erfindung eine in einem Netzstecker integrierte Steuervorrichtung mit einem Leistungsbauteil für ein Elektrowerkzeug vorgeschlagen. Dies ist aufgrund der miniaturisierten Elektronikbaugruppe mit SMD-Bauteilen auf einfache Weise möglich, wobei gegenüber der herkömmlichen Realisierung Vergußmasse innerhalb des Elektrowerkzeuge eingespart werden kann, was Bauraumgewinn im Elektrowerkzeug bedeutet, die im Ergebnis dadurch kleiner gebaut sind. Ferner können vorteilhaft periphere Bauteile eingespart werden, wie z.B. ein Bauteilbecher für das Leistungsbauelement. Im Ergebnis ist es dadurch möglich, eine kostenoptimierte Fertigung von Elektrowerkzeugen bereitzustellen. Vorteilhaft ist die erfindungsgemäße Integration der Platine in jeglichen verwendeten Netzsteckertypen möglich, wobei eine Form des Steckergehäuses und eine Anzahl von Steckerstiften beliebig sind. Der Fachmann wird die Möglichkeit einer nahezu unbegrenzten Anzahl von Ausführungsformen erkennen und deshalb vorangehend auch nicht oder nur teilweise offenbarte Ausführungsbeispiele gemäß den angefügten Ansprüchen realisieren.In summary, the present invention proposes a control device integrated in a mains plug with a power component for an electric tool. This is possible in a simple manner due to the miniaturized electronic assembly with SMD components, and compared to the conventional implementation, sealing compound within the power tool can be saved, which means space gain in the power tool, which as a result is built smaller. Furthermore, peripheral components can advantageously be saved, such as a component cup for the power component. As a result, it is possible to provide cost-optimized production of power tools. The integration of the circuit board according to the invention is advantageously possible in any type of mains plug used, with any shape of the plug housing and any number of plug pins being possible. The person skilled in the art will recognize the possibility of an almost unlimited number of embodiments and will therefore also implement exemplary embodiments according to the appended claims that have not been disclosed or only partially disclosed above.
Claims (14)
- Power tool with a mains plug (30) with a mains cable (40) for supplying electrical energy to the power tool (200) from an electrical supply system with a control device (100) for the power tool (200), having a printed circuit board (10) with an electronic power component arranged on it, wherein the printed circuit board (10) is arranged in the mains plug (30) and is intended to provide electronics functions for the power tool (200) on the printed circuit board (10), wherein the electronics functions model restart prevention, soft starting, load-dependent motor control and/or motor protection, characterized in that the printed circuit board (10) can be connected to components of the power tool (200) via a data connection.
- Power tool according to Claim 1, characterized in that means for discharging thermal energy from the power component (20) are provided.
- Power tool according to Claim 2, characterized in that the power component (20) is connected to a stranded wire of the mains cable (40) directly or by means of a thermally conductive connection (50) at least in portions.
- Power tool according to Claim 3, characterized in that the thermally conductive connection (50) is soldered or riveted or screwed to the stranded wire.
- Power tool according to one of Claims 2 to 4, characterized in that a heat sink (60) is arranged on the power component (20).
- Mains plug according to Claim 5, characterized in that the heat sink (60) is riveted to the power component (20) or bears against the power component (10) by encapsulation by injection moulding with a potting compound.
- Power tool according to Claim 5 or 6, characterized in that the heat sink (60) has raised portions (61) which extend into openings (32) in the mains plug (30).
- Power tool according to one of the preceding claims, characterized in that the mains plug (30) comprises a thermally conductive plastic.
- Power tool according to Claim 8, characterized in that the plastic has integrally formed cooling fins (34).
- Power tool according to one of the preceding claims, wherein the power component (20) is provided for controlling the power tool (200).
- Power tool according to one of the preceding claims, characterized in that the control device (100) is integrated in the mains plug (30).
- Power tool according to one of the preceding claims, characterized in that the control device (100) is integrated in the mains plug, wherein the printed circuit board (10) is arranged in the mains plug (30) by means of injection moulding.
- Power tool according to one of the preceding claims, characterized in that the control device (100) has an electronics assembly with SMD components.
- Power tool according to one of the preceding claims, characterized in that the power component (20) is arranged entirely within the mains plug (30).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014217860.6A DE102014217860A1 (en) | 2014-09-08 | 2014-09-08 | Control device for a power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2993741A1 EP2993741A1 (en) | 2016-03-09 |
| EP2993741B1 true EP2993741B1 (en) | 2022-09-21 |
Family
ID=53510733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15175083.3A Active EP2993741B1 (en) | 2014-09-08 | 2015-07-02 | Electric tool |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2993741B1 (en) |
| DE (1) | DE102014217860A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016105308A1 (en) * | 2016-03-22 | 2017-09-28 | Phoenix Contact E-Mobility Gmbh | Connector part with a arranged on a contact element heat capacity element |
| DE102017204939A1 (en) * | 2017-03-23 | 2018-09-27 | Te Connectivity Germany Gmbh | An electrical connector and electrical connection assembly comprising an electrical connector |
| DE102019207675A1 (en) * | 2019-05-24 | 2020-11-26 | Robert Bosch Gmbh | Connector system |
| DE102020102219A1 (en) | 2020-01-30 | 2021-08-05 | Audi Aktiengesellschaft | Charging connector for a charging cable for connection to a motor vehicle and motor vehicle and charging system |
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| US20070164704A1 (en) * | 2006-01-13 | 2007-07-19 | Horizon Technologies, Inc. | Plug with supplemental memory |
| CN201478612U (en) * | 2009-09-04 | 2010-05-19 | 陈耀华 | Remotely controlled socket |
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| DE10323170A1 (en) * | 2003-05-22 | 2004-12-09 | Conti Temic Microelectronic Gmbh | Plug with electronic circuit, especially for car electronic system with at least partly integrated electronic circuit, whose waste heat is reduced by integrated cooling |
| US20050275981A1 (en) * | 2004-04-05 | 2005-12-15 | Power John J | GFCI wiring device with integral relay module |
| DE202006005689U1 (en) * | 2006-04-07 | 2006-06-14 | Phoenix Contact Gmbh & Co. Kg | Electrical device connector line, has main plug arranged at ends that are turned away from electrical device and excess voltage prevention section integrated in cable and arranged close to main plug |
| CN201113815Y (en) * | 2007-09-19 | 2008-09-10 | 高子泉 | Soft startup power socket control circuit |
| DE202009001403U1 (en) * | 2009-02-05 | 2009-05-20 | haspa GmbH, Biegsame Wellen und Spannzangen | Plug-in module with electrical restart interlock |
| WO2010108360A1 (en) * | 2009-03-23 | 2010-09-30 | Chen Huaqiang | Leakage protective plug |
| US20120052718A1 (en) * | 2010-08-26 | 2012-03-01 | Pocrass Alan L | High Frequency Local and Wide Area Networking Connector with Insertable and Removable Tranformer Component and Heat Sink |
| DE102011110489A1 (en) * | 2011-08-17 | 2013-02-21 | Stefan Gervink | Plug outlet device for power supply to electrical device e.g. TV, has insertion socket for plug of cable, where insertion socket holds plug of cable with lockable mechanical safety device for securing plug against extraction |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2993741A1 (en) | 2016-03-09 |
| DE102014217860A1 (en) | 2016-03-10 |
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