EP1510300B1 - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- EP1510300B1 EP1510300B1 EP04104018A EP04104018A EP1510300B1 EP 1510300 B1 EP1510300 B1 EP 1510300B1 EP 04104018 A EP04104018 A EP 04104018A EP 04104018 A EP04104018 A EP 04104018A EP 1510300 B1 EP1510300 B1 EP 1510300B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- power tool
- housing
- channel
- conductor channel
- 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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Links
- 239000004020 conductor Substances 0.000 claims description 145
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 240000001439 Opuntia Species 0.000 description 2
- 235000004727 Opuntia ficus indica Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/041—Cable management or routing of electrical cables and wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/091—Electrically-powered tool components
- B25D2250/095—Electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/371—Use of springs
Definitions
- the invention relates to a power tool, in particular an electric motor driven hand tool, with a power cord as a power connector and a housing.
- a power tool in particular an electric motor driven hand tool
- a power cord as a power connector and a housing.
- at least one component such as a motor, an electronics and / or a transmission is arranged.
- at least one conductor strand is provided in the housing, the first end of which can be connected to a conductor of the power cable and whose second end can be fastened to the component of the power tool, wherein the at least one conductor strand is arranged in a receptacle of a conductor channel which has a rigid section.
- Power tools and in particular electric motor driven hand tools such as drills and the like, are powered by the power cord.
- the power cord is fed into the housing of the power tool and by means of separate conductor strands, the connection between the individual conductors of the power cable and the corresponding component of the power tool is created in the housing.
- the current-carrying conductors of the power cord are connected to the conductor wires via corresponding connections on the motor or on the electronics with these components in the housing of the power tool.
- the conductor strands are selectively positioned by means of individual holding parts or without any fixing freely lying in the housing.
- a disadvantage of this known solution is that during the final assembly of the housing parts, the conductor strands can be pinched or even damaged. If a plurality of holding parts are provided for fixing the conductor strands in the housing, the assembly of the conductor strands requires a great deal of time.
- the EP 0 129 754 A1 shows a power tool in which electrical connection lines are arranged in a coming into contact with the outside of the housing and projecting from a handle shell channel cover. Within the housing, the lines are guided freely.
- the object of the invention is to provide an electrical appliance that allows easy installation of the housing parts without the risk of damaging the conductor strands arranged therein.
- the electrical appliance should meet various country-specific requirements.
- the conductor channel is provided in the housing of the power tool and has at least one flexible section adjoining the rigid section.
- the at least one conductor strand is protected from damage during assembly of the housing parts of the electrical appliance and can be the at least one conductor strand simply position in the electrical appliance.
- the rigid portion ensures the desired orientation of the at least one conductor strand in the housing.
- the flexible section allows the use of one type of conductor channel in different electrical burs since the alignment of the at least one conductor strand is adaptable during assembly. As a result of the leadership of the conductor channel, the usability of at least one conductor strand is improved over the known solutions.
- two conductor strands are inserted into the receptacle of the conductor channel and the conductor channel inserted into the housing of the electrical appliance. Subsequently, one end of each of the conductor strands is connected to one of the current-carrying conductors of the power cable, and in each case the other end of each conductor strand is connected to the corresponding component of the electrical apparatus.
- the conductor channel is first fixed in the housing and then inserted the conductor strands in the receptacle of the conductor channel and fixed in the housing of the electrical appliance.
- the conductor strands can already be connected to the corresponding component of the electrical appliance before being inserted into the conductor channel and connected to the corresponding conductor of the mains cable.
- the flexible section of the conductor channel can compensate for the movements of the conductor strands.
- the conductor strands of the conductor channel are largely protected from various external influences, which significantly improves the life and thus the usability against the known solutions.
- the flexible section also prevents kinking of the conductor strands and reduces the risk of loosening the conductor strands at their connection points.
- the conductor strand is preferably a protective conductor strand whose first end can be connected to a protective conductor of the power cable and whose second end can be fastened to a metallic part of a component arranged in the housing of the power tool, such as the motor and / or the gearbox.
- a protective conductor In certain countries, such as the US, power tools, and in particular electric motor driven hand tools, must be equipped with a protective conductor.
- the protective conductor of the power cable is connected to protect the power tool with the metallic part of the power tool (eg., To the motor, the gearbox or percussion) by means of serving as protective conductor strand wire so that in case of emergency can secure the fuse of the power line.
- the conductor channel is integrally formed.
- the logistical effort and the effort for the assembly of the conductor channel are in a one-piece design less than in an embodiment, which is formed from loose, joinable sections.
- the conductor channel is preferably provided for reception in a few embodiments of use and, if desired, cut to the desired length.
- the flexible portion is formed by means of recesses on the conductor channel.
- the recesses are slit-shaped.
- the cross-section of the conductor channel is advantageously weakened by the recesses and their distance from each other so that the flexible portion can be bent in a plane in different orientations and at the same time dimensionally stable like a chain.
- the conductor channel has holding parts for fixing the at least one conductor strand to the conductor channel.
- the at least one conductor strand is held at several points along the conductor channel and slipping of the at least one conductor strand from the receptacle of the conductor channel is largely prevented.
- the number of arranged holding parts is essentially dependent on the existing loads on the electrical appliance.
- the conductor channel preferably has a first connection for connecting the conductor channel to the housing and a second connection for connecting the conductor channel to one of the components of the electric tool. Since the conductor channel is fixed to the housing and to one of the components of the power tool, which, arranged in the receptacle of the conductor channel, at least one conductor strand is exposed as a whole and in particular at their terminal areas lower dynamic loads.
- the at least one conductor strand is part of the conductor channel.
- the conductor channel forms in this embodiment with the at least one conductor strand assembly technical unit, whereby the at least one conductor strand is preferably protected from damage.
- the at least one conductor strand preferably projects beyond the terminals of the conductor channel to allow the connections of the at least one conductor strand to the corresponding parts.
- component-side, second connection the at least one conductor strand z. B. attached via corresponding coupling portions on the corresponding component.
- the at least one conductor strand is a protective conductor strand, its second end is preferably fixedly connected to the second connection of the conductor channel, wherein the connection is conductively fixed to the metallic part of the motor, impact mechanism and / or the transmission.
- the first terminal has a plug-in geometry, which can be brought into engagement with a receiving geometry on the housing.
- the plug geometry includes z. B. hooks which are inserted into correspondingly formed as a receiving geometry recesses in the housing.
- the first terminal is usually formed at the free end of the rigid portion of the conductor channel, or arranged, whereby the rigid portion is held in the predetermined orientation.
- the first connection is also advantageously formed largely free of rotation, whereby unwanted movements of the conductor channel are prevented.
- the second connection comprises a connection eye.
- the connection eye is pushed to create the connection between the conductor channel and the component, or on the metallic part, for example, on or in a receptacle on the component, or on the metallic part.
- the connection eye has an opening through which a fastening means, such as a screw, can be passed and fixes the connection eye on the component or on the metallic part.
- the second connection further comprises a fan disk. The fan disc allows a correct position and positionally accurate fixation of the conductor channel on the component, or on the metallic part of the electrical appliance.
- the conductor channel has at least partially an L-shaped cross-section.
- a sufficient fixation of the at least one conductor strand in the conductor channel is provided.
- the conductor channel has a substantially U-shaped cross-section.
- To create the flexible portion of the conductor channel are at least partially two, preferably adjacent portions of the U-shaped cross-section with a plurality of mutually spaced recesses, such. B. cuts, provided.
- the conductor channel is made of plastic.
- a non-conductive plastic base material is used.
- the conductor channel can already be produced in one piece and in the desired configuration in one process step.
- Trained as a drill power tool 1 has in the housing 2, a motor 3, an electronics 16, a gear 4 and a striking mechanism 5. These are combined into a unit and by means of a first hinge frame 6.1 and a second hinge frame 6.2 and by means of a compression spring 7, which together form a device for reducing the vibrations, mounted in the housing 2 swinging.
- a power cord 8 which has a protective conductor 9, the motor 3 is supplied with power.
- a conductor channel 11 is arranged in the housing 2, which has a protective conductor 13 in a receptacle 12.
- the protective conductor 13 is connected on the one hand to the metallic housing of the motor 3 and on the other hand connected to the protective conductor 9 of the power cord 8 by means of a luster terminal 10.
- the conductor channel 11 is formed in one piece and has a flexible portion 14 and a rigid portion 15.
- the Indian Fig. 3 section shown extends through the rigid portion 15 of the conductor channel 11 along the line III-III in Fig. 2
- the Indian Fig. 4 section shown extends through the flexible portion 14 of the conductor channel 11 along the line IV-IV in Fig. 2 ,
- the flexible portion 14 of the substantially U-shaped cross-section is weakened several times by means of a plurality of slot-shaped recesses 21 so that the flexible portion 14 is flexible yet dimensionally stable as a chain.
- a plurality of projecting lugs formed first holding members 22 and in the region of the rigid portion 15 a plurality of projecting lugs formed second holding members 23 are formed on the receptacle 12 of the conductor channel 11 in the region of the flexible portion 14.
- the conductor channel 11 is made of a plastic in the injection / casting process, wherein the individual elements of the conductor channel 11 are formed in one casting.
- the conductor channel 11 has a first connection 25 for the connection of the conductor channel 11 to the housing 2 and a second connection 24 for the connection of the conductor channel 11 to a metallic part of the electrical appliance 1, here on the motor 3.
- the first connection 25 has, as a plug-in geometry 29, two hooks which can be inserted into recesses on the housing 2.
- the second connection 24 of the conductor channel 11 comprises a connection eye 26, which is provided with an opening 27 for the passage of a screw 28. By means of the screw 28, the conductor channel 11 is fixed to the motor 3.
- a fan disk 30 is provided between the connection eye 26 and the outer wall of the motor 3.
- the protective conductor 13 is factory located in the conductor channel 11.
- the one end 32 of the protective conductor strand 13 protrudes beyond the free end of the conductor channel 11 so that it can be subsequently connected to the protective conductor 9 of the power cable 8 after assembly of the conductor channel 11 in the power tool 1.
- the other end 31 of the protective conductor strand 13 is firmly connected to the connection eye 26.
Description
Die Erfindung betrifft ein Elektrowerkzeug, insbesondere ein elektromotorisch angetriebenes Handwerkzeug, mit einem Netzkabel als Netzanschluss und mit einem Gehäuse. Im Gehäuse ist zumindest ein Bauteil, wie ein Motor, eine Elektronik und/oder ein Getriebe, angeordnet. Weiter ist im Gehäuse zumindest eine Leiterlitze vorgesehen, deren erstes Ende mit einem Leiter des Netzkabels verbindbar und deren zweites Ende an dem Bauteil des Elektrowerkzeuges befestigbar ist, wobei die zumindest eine Leiterlitze in einer Aufnahme eines Leiterkanals angeordnet ist, der einen starren Abschnitt aufweist.The invention relates to a power tool, in particular an electric motor driven hand tool, with a power cord as a power connector and a housing. In the housing at least one component, such as a motor, an electronics and / or a transmission is arranged. Furthermore, at least one conductor strand is provided in the housing, the first end of which can be connected to a conductor of the power cable and whose second end can be fastened to the component of the power tool, wherein the at least one conductor strand is arranged in a receptacle of a conductor channel which has a rigid section.
Elektrowerkzeuge und insbesondere elektromotorisch angetriebene Handwerkzeuge, wie z. B. Bohrmaschinen und dergleichen, werden über das Netzkabel mit Strom versorgt. Das Netzkabel wird in das Gehäuse des Elektrowerkzeuges geführt und mittels separaten Leiterlitzen wird die Verbindung zwischen den einzelnen Leitern des Netzkabels und dem entsprechenden Bauteil des Elektrowerkzeuges im Gehäuse geschaffen. So werden beispielsweise die stromführenden Leiter des Netzkabels mit den Leiterlitzen über entsprechende Anschlüsse am Motor oder an der Elektronik mit diesen Bauteilen im Gehäuse des Elektrowerkzeuges verbunden.Power tools and in particular electric motor driven hand tools such. As drills and the like, are powered by the power cord. The power cord is fed into the housing of the power tool and by means of separate conductor strands, the connection between the individual conductors of the power cable and the corresponding component of the power tool is created in the housing. For example, the current-carrying conductors of the power cord are connected to the conductor wires via corresponding connections on the motor or on the electronics with these components in the housing of the power tool.
Bei Elektrowerkzeugen ohne eine Vorrichtung zur Reduktion der Vibrationen werden die Leiterlitzen punktuell mittels einzelner Halteteile oder ohne jegliche Fixierung frei liegend im Gehäuse angeordnet. Nachteilig an dieser bekannten Lösung ist, dass bei der Endmontage der Gehäuseteile die Leiterlitzen eingeklemmt oder sogar beschädigt werden können. Sind eine Vielzahl von Halteteilen zur Fixierung der Leiterlitzen im Gehäuse vorgesehen, erfordert die Montage der Leiterlitzen einen grossen zeitlichen Aufwand.In power tools without a device for reducing the vibrations, the conductor strands are selectively positioned by means of individual holding parts or without any fixing freely lying in the housing. A disadvantage of this known solution is that during the final assembly of the housing parts, the conductor strands can be pinched or even damaged. If a plurality of holding parts are provided for fixing the conductor strands in the housing, the assembly of the conductor strands requires a great deal of time.
Andere Elektrowerkzeuge weisen zur Reduktion der Vibrationen beispielsweise ein Motor-/Getriebe-/Schlagwerksystem auf, das schwingend zum Aussengehäuse im Gehäuse gelagert ist. Zum Ausgleich der Schwingungen dieser Vorrichtung zur Reduktion der Vibrationen sind die Leiterlitzen mit einer ausreichenden Länge im Gehäuse angeordnet. Die Leiterlitzen werden entweder mittels wenigen Halteteilen im Gehäuse fixiert oder ohne jegliche Fixierung frei liegend im Gehäuse angeordnet. Nachteilig an dieser Lösung ist, dass der freiliegende Abschnitt der Leiterlitzen bei der Endmontage der Gehäuseteile die Leiterlitzen eingeklemmt oder sogar beschädigt werden können.Other power tools have to reduce the vibrations, for example, a motor / gearbox / percussion system that oscillates to the outer housing mounted in the housing is. To compensate for the vibrations of this device to reduce the vibrations of the conductor strands are arranged with a sufficient length in the housing. The conductor strands are either fixed by means of a few holding parts in the housing or arranged freely lying in the housing without any fixation. A disadvantage of this solution is that the exposed portion of the conductor strands in the final assembly of the housing parts, the conductor strands can be pinched or even damaged.
Die
Aufgabe der Erfindung ist es, ein Elektrogerät zu schaffen, das eine einfache Montage der Gehäuseteile ohne die Gefahr der Beschädigung der darin angeordneten Leiterlitzen ermöglicht. Zudem soll das Elektrogerät verschiedenen länderspezifische Anforderungen genügen.The object of the invention is to provide an electrical appliance that allows easy installation of the housing parts without the risk of damaging the conductor strands arranged therein. In addition, the electrical appliance should meet various country-specific requirements.
Die Aufgabe ist durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen dargelegt.The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.
Gemäss der Erfindung ist der Leiterkanal im Gehäuse des Elektrowerkzeugs vorgesehen und weist zumindest einen an den starren Abschnitt anschliessenden flexiblen Abschnitt auf.According to the invention, the conductor channel is provided in the housing of the power tool and has at least one flexible section adjoining the rigid section.
Infolge des Leiterkanals ist die zumindest eine Leiterlitze vor Beschädigungen bei der Montage der Gehäuseteile des Elektrogerätes geschützt und lässt sich die zumindest eine Leiterlitze einfach im Elektrogerät positionieren. Der starre Abschnitt gewährleistet die gewünschte Ausrichtung der zumindest einen Leiterlitze im Gehäuse. Der flexible Abschnitt ermöglicht die Verwendung eines Typs eines Leiterkanals in verschiedenen Elektrogräten, da die Ausrichtung der zumindest einen Leiterlitze bei der Montage anpassbar ist. Infolge der Führung des Leiterkanals ist die Gebrauchstauglichkeit der zumindest einen Leiterlitze gegenüber den bekannten Lösungen verbessert.As a result of the conductor channel, the at least one conductor strand is protected from damage during assembly of the housing parts of the electrical appliance and can be the at least one conductor strand simply position in the electrical appliance. The rigid portion ensures the desired orientation of the at least one conductor strand in the housing. The flexible section allows the use of one type of conductor channel in different electrical burs since the alignment of the at least one conductor strand is adaptable during assembly. As a result of the leadership of the conductor channel, the usability of at least one conductor strand is improved over the known solutions.
Zur Versorgung der im Gehäuse angeordneten Bauteile des Elektrogerätes mit Strom werden beispielsweise zwei Leiterlitzen in die Aufnahme des Leiterkanals eingelegt und der Leiterkanal in das Gehäuse des Elektrogerätes eingesetzt. Anschliessend wird jeweils das eine Ende einer der Leiterlitzen mit einem der stromführenden Leitern des Netzkabels verbunden und jeweils das andere Ende jeder Leiterlitze an dem entsprechenden Bauteil des Elektrogerätes angeschlossen. In einer Variante dazu wird zuerst der Leiterkanal in dem Gehäuse befestigt und anschliessend die Leiterlitzen in die Aufnahme des Leiterkanals eingelegt und so im Gehäuse des Elektrogerätes fixiert. In dieser Variante können die Leiterlitzen bereits vor dem Einlegen in den Leiterkanal an dem entsprechenden Bauteil des Elektrogerätes angeschlossen und mit dem entsprechenden Leiter des Netzkabels verbunden sein.For supplying the arranged in the housing components of the electrical appliance with electricity, for example, two conductor strands are inserted into the receptacle of the conductor channel and the conductor channel inserted into the housing of the electrical appliance. Subsequently, one end of each of the conductor strands is connected to one of the current-carrying conductors of the power cable, and in each case the other end of each conductor strand is connected to the corresponding component of the electrical apparatus. In a variant of this, the conductor channel is first fixed in the housing and then inserted the conductor strands in the receptacle of the conductor channel and fixed in the housing of the electrical appliance. In this variant, the conductor strands can already be connected to the corresponding component of the electrical appliance before being inserted into the conductor channel and connected to the corresponding conductor of the mains cable.
Weist das Elektrogerät eine schwingend im Aussengehäuse des Elektrogerätes gelagerte Vorrichtung zur Reduktion der Vibrationen auf, so kann der flexible Abschnitt des Leiterkanals die Bewegungen der Leiterlitzen ausgleichen. Dabei sind die Leiterlitzen von dem Leiterkanal vor diversen äusseren Einflüssen weitgehend geschützt, was die Lebensdauer und somit die Gebrauchstauglichkeit massgeblich gegenüber den bekannten Lösungen verbessert. Der flexible Abschnitt verhindert zudem ein Abknicken der Leiterlitzen und reduziert die Gefahr eines Lösens der Leiterlitzen an deren Anschlusspunkten.If the electrical appliance has a device for reducing vibrations that is mounted oscillatingly in the outer housing of the electrical appliance, then the flexible section of the conductor channel can compensate for the movements of the conductor strands. The conductor strands of the conductor channel are largely protected from various external influences, which significantly improves the life and thus the usability against the known solutions. The flexible section also prevents kinking of the conductor strands and reduces the risk of loosening the conductor strands at their connection points.
Vorzugsweise ist die Leiterlitze eine Schutzleiterlitze, deren erstes Ende mit einem Schutzleiter des Netzkabels verbindbar und deren zweites Ende an einem metallischen Teil eines, der im Gehäuse des Elektrowerkzeuges angeordneten Bauteile, wie der Motor und/oder das Getriebe, befestigbar ist. In gewissen Ländern, wie beispielsweise den USA, müssen Elektrowerkzeuge und insbesondere elektromotorisch angetriebene Handwerkzeuge mit einem Schutzleiter ausgestattet sein. Der Schutzleiter des Netzkabels wird zur Absicherung des Elektrowerkzeuges mit dem metallischen Teil des Elektrowerkzeuges (z. B mit dem Motor, dem Getriebe oder dem Schlagwerk) mittels der als Schutzleiterlitze dienenden Leiterlitze verbunden, damit im Ernstfall die Sicherung der Netzleitung auslösen kann.The conductor strand is preferably a protective conductor strand whose first end can be connected to a protective conductor of the power cable and whose second end can be fastened to a metallic part of a component arranged in the housing of the power tool, such as the motor and / or the gearbox. In certain countries, such as the US, power tools, and in particular electric motor driven hand tools, must be equipped with a protective conductor. The protective conductor of the power cable is connected to protect the power tool with the metallic part of the power tool (eg., To the motor, the gearbox or percussion) by means of serving as protective conductor strand wire so that in case of emergency can secure the fuse of the power line.
Vorzugsweise ist der Leiterkanal einteilig ausgebildet. Der logistische Aufwand sowie der Aufwand für die Montage des Leiterkanals sind bei einer einteiligen Ausführung geringer als bei einer Ausführung, die aus losen, zusammenfügbaren Abschnitten gebildet ist. Der Leiterkanal wird bevorzugt in einigen wenigen Ausführungen der Verwendung zur Aufnahme bereitgestellt und bei Bedarf auf die gewünschte Länge abgelängt.Preferably, the conductor channel is integrally formed. The logistical effort and the effort for the assembly of the conductor channel are in a one-piece design less than in an embodiment, which is formed from loose, joinable sections. The conductor channel is preferably provided for reception in a few embodiments of use and, if desired, cut to the desired length.
Bevorzugt ist der flexible Abschnitt mittels Ausnehmungen an dem Leiterkanal gebildet. Vorzugsweise sind die Ausnehmungen schlitzförmig ausgebildet. Der Querschnitt des Leiterkanals wird durch die Ausnehmungen und deren Abstand zu einander vorteilhafterweise derart geschwächt, dass der flexible Abschnitt in einer Ebene in verschiedenen Ausrichtungen gebogen werden kann und gleichzeitig seitlich formstabil wie eine Kette ist.Preferably, the flexible portion is formed by means of recesses on the conductor channel. Preferably, the recesses are slit-shaped. The cross-section of the conductor channel is advantageously weakened by the recesses and their distance from each other so that the flexible portion can be bent in a plane in different orientations and at the same time dimensionally stable like a chain.
Vorteilhafterweise weist der Leiterkanal Halteteile zum Fixieren der zumindest einen Leiterlitze an dem Leiterkanal auf. Mit den Halteteilen wird die zumindest einen Leiterlitze an mehreren Punkten entlang des Leiterkanals gehalten und ein Ausgleiten der zumindest einen Leiterlitze aus der Aufnahme des Leiterkanals ist weitgehend verhindert. Neben der sicheren Fixierung der zumindest einen Leiterlitze ist die Anzahl der angeordneten Halteteile im Wesentlichen von den vorhandenen Belastungen auf das Elektrogerät abhängig.Advantageously, the conductor channel has holding parts for fixing the at least one conductor strand to the conductor channel. With the holding parts, the at least one conductor strand is held at several points along the conductor channel and slipping of the at least one conductor strand from the receptacle of the conductor channel is largely prevented. In addition to the secure fixing of the at least one conductor strand, the number of arranged holding parts is essentially dependent on the existing loads on the electrical appliance.
Bevorzugt weist der Leiterkanal einen ersten Anschluss für den Anschluss des Leiterkanals an dem Gehäuse und einen zweiten Anschluss für den Anschluss des Leiterkanals an einem der Bauteile des Elektrowerkzeuges auf. Da der Leiterkanal an dem Gehäuse und an einem der Bauteile des Elektrowerkzeuges befestigt ist, ist die, in der Aufnahme des Leiterkanals angeordneten, zumindest einen Leiterlitze als Gesamtes und insbesondere an deren Anschlussbereichen geringeren dynamischen Belastungen ausgesetzt.The conductor channel preferably has a first connection for connecting the conductor channel to the housing and a second connection for connecting the conductor channel to one of the components of the electric tool. Since the conductor channel is fixed to the housing and to one of the components of the power tool, which, arranged in the receptacle of the conductor channel, at least one conductor strand is exposed as a whole and in particular at their terminal areas lower dynamic loads.
Vorzugsweise ist die zumindest eine Leiterlitze Bestandteil des Leiterkanals. Der Leiterkanal bildet in dieser Ausführungsform mit der zumindest einen Leiterlitze eine montagetechnische Einheit, womit die zumindest eine Leiterlitze in bevorzugter Weise vor Beschädigungen geschützt ist. Die zumindest eine Leiterlitze ragt vorzugsweise über die Anschlüsse des Leiterkanals hinaus, um die Anschlüsse der zumindest einen Leiterlitze an die entsprechenden Teile zu ermöglichen. Beim gehäuseseitigen, ersten Anschluss des Leiterkanals wird die zumindest eine Leiterlitze z. B. mittels einer Lüsterklemme mit dem entsprechenden Leiter des Netzkabels verbunden. Beim bauteilseitigen, zweiten Anschluss wird die zumindest eine Leiterlitze z. B. über entsprechende Kupplungsabschnitte an dem entsprechenden Bauteil befestigt. Ist die zumindest eine Leiterlitze eine Schutzleiterlitze, so ist deren zweites Ende bevorzugt fest mit dem zweiten Anschluss des Leiterkanals verbunden, wobei der Anschluss leitend an dem metallischen Teil des Motors, des Schlagwerks und/oder des Getriebes befestigt wird.Preferably, the at least one conductor strand is part of the conductor channel. The conductor channel forms in this embodiment with the at least one conductor strand assembly technical unit, whereby the at least one conductor strand is preferably protected from damage. The at least one conductor strand preferably projects beyond the terminals of the conductor channel to allow the connections of the at least one conductor strand to the corresponding parts. When the housing side, first connection of the conductor channel, the at least one conductor strand z. B. connected by means of a Lustererklemme with the corresponding head of the power cord. When component-side, second connection, the at least one conductor strand z. B. attached via corresponding coupling portions on the corresponding component. If the at least one conductor strand is a protective conductor strand, its second end is preferably fixedly connected to the second connection of the conductor channel, wherein the connection is conductively fixed to the metallic part of the motor, impact mechanism and / or the transmission.
Bevorzugt weist der erste Anschluss eine Steckgeometrie auf, die mit einer Aufnahmegeometrie an dem Gehäuse in Eingriff bringbar ist. Die Steckgeometrie umfasst z. B. Haken, die in entsprechend als Aufnahmegeometrie ausgebildete Ausnehmungen im Gehäuse einführbar sind. Der erste Anschluss ist zumeist an dem freien Ende des starren Abschnitts des Leiterkanals ausgeformt, beziehungsweise angeordnet, womit der starre Abschnitt in der vorbestimmten Ausrichtung gehalten wird. Der erste Anschluss ist zudem vorteilhafterweise weitgehend drehfrei ausgebildet, womit unerwünschte Bewegungen des Leiterkanals verhindert sind.Preferably, the first terminal has a plug-in geometry, which can be brought into engagement with a receiving geometry on the housing. The plug geometry includes z. B. hooks which are inserted into correspondingly formed as a receiving geometry recesses in the housing. The first terminal is usually formed at the free end of the rigid portion of the conductor channel, or arranged, whereby the rigid portion is held in the predetermined orientation. The first connection is also advantageously formed largely free of rotation, whereby unwanted movements of the conductor channel are prevented.
Bevorzugt umfasst der zweite Anschluss eine Anschlussöse. Die Anschlussöse wird zur Schaffung der Verbindung zwischen dem Leiterkanal und dem Bauteil, beziehungsweise an dem metallischen Teil beispielsweise auf oder in eine Aufnahme an dem Bauteil, beziehungsweise an dem metallischen Teil geschoben. In einer weiteren Ausführungsform weist die Anschlussöse eine Öffnung auf, durch welche ein Befestigungsmittel, wie beispielsweise eine Schraube, hindurchführbar ist und die Anschlussöse an dem Bauteil, beziehungsweise an dem metallischen Teil fixiert. Vorteilhafterweise umfasst der zweite Anschluss weiter eine Fächerscheibe. Die Fächerscheibe erlaubt eine lagerichtige und positionsgenaue Fixierung des Leiterkanals an dem Bauteil, beziehungsweise an dem metallischen Teil des Elektrogerätes.Preferably, the second connection comprises a connection eye. The connection eye is pushed to create the connection between the conductor channel and the component, or on the metallic part, for example, on or in a receptacle on the component, or on the metallic part. In a further embodiment, the connection eye has an opening through which a fastening means, such as a screw, can be passed and fixes the connection eye on the component or on the metallic part. Advantageously, the second connection further comprises a fan disk. The fan disc allows a correct position and positionally accurate fixation of the conductor channel on the component, or on the metallic part of the electrical appliance.
Vorzugsweise weist der Leiterkanal zumindest bereichsweise einen L-förmigen Querschnitt auf. Insbesondere mit der Anordnung von mehreren Halteteilen an den freien Enden des L-förmigen Querschnitts ist eine ausreichende Fixierung der zumindest einen Leiterlitze im Leiterkanal gegeben. Zudem kann beispielsweise durch mehrfaches Einschneiden eines der Schenkel des L-förmigen Querschnitts der flexible Abschnitt des Leiterkanals geschaffen werden. In einer Variante dazu weist der Leiterkanal einen im Wesentlichen U-förmigen Querschnitt auf. Zur Schaffung des flexiblen Abschnitts des Leiterkanals werden zumindest teilweise zwei, bevorzugt benachbarte Abschnitte des U-förmigen Querschnitts mit mehreren, zueinander beabstandeten Ausnehmungen, wie z. B. Einschnitte, versehen.Preferably, the conductor channel has at least partially an L-shaped cross-section. In particular, with the arrangement of a plurality of holding parts at the free ends of the L-shaped cross section, a sufficient fixation of the at least one conductor strand in the conductor channel is provided. In addition, for example, by multiple cutting one of the legs of the L-shaped cross section, the flexible portion of the conductor channel can be created. In a variant of this, the conductor channel has a substantially U-shaped cross-section. To create the flexible portion of the conductor channel are at least partially two, preferably adjacent portions of the U-shaped cross-section with a plurality of mutually spaced recesses, such. B. cuts, provided.
Vorteilhafterweise ist der Leiterkanal aus Kunststoff gefertigt. Zur Fertigung des Leiterkanals wird bevorzugt ein nichtleitendes Kunststoff-Grundmaterial verwendet. Mittels beispielsweise eines Spritz-/Gussverfahrens kann der Leiterkanal bereits einteilig und in der gewünschten Ausgestaltung in einem Verfahrensschritt hergestellt werden.Advantageously, the conductor channel is made of plastic. For the production of the conductor channel preferably a non-conductive plastic base material is used. By means of, for example, an injection / casting process, the conductor channel can already be produced in one piece and in the desired configuration in one process step.
Aus der nachfolgenden Detailbeschreibung und der Gesamtheit der Patentansprüche ergeben sich weitere vorteilhafte Ausführungsformen und Merkmalskombinationen der Erfindung.From the following detailed description and the totality of the claims, further advantageous embodiments and feature combinations of the invention result.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. Es zeigen:
- Fig. 1
- Einen Teillängsschnitt eines erfindungsgemässen Elektrowerkzeuges mit einem Leiterkanal;
- Fig. 2
- eine Ansicht des Leiterkanals, gemäss
Fig. 1 von der Rückseite; - Fig. 3
- einen Schnitt durch den Leiterkanal entlang der Linie III-III in
Fig. 2 ; und - Fig. 4
- einen Schnitt durch den Leiterkanal entlang der Linie IV-IV in
Fig. 2 .
- Fig. 1
- A partial longitudinal section of an inventive power tool with a conductor channel;
- Fig. 2
- a view of the conductor channel, according to
Fig. 1 from the back; - Fig. 3
- a section through the conductor channel along the line III-III in
Fig. 2 ; and - Fig. 4
- a section through the conductor channel along the line IV-IV in
Fig. 2 ,
Grundsätzlich sind in den Figuren gleiche Teile mit den gleichen Bezugszeichen versehen.Basically, the same parts are provided with the same reference numerals in the figures.
Die Ausführungen zu den Figuren beziehen sich auf ein erfindungsgemässes Elektrowerkzeug, welches mit einer Schutzleiterlitze elektrisch abgesichert ist. Bei einer Anordnung von Leiterlitzen zur Stromversorgung der, im Gehäuse des erfindungsgemässen Elektrowerkzeuges angeordneten Bauteile gelten die nachfolgenden Ausführungen sinngemäss.The explanations concerning the figures relate to a power tool according to the invention, which is electrically protected by a protective conductor strand. In an arrangement of Conductor strands for power supply, arranged in the housing of the inventive power tool components, the following statements apply mutatis mutandis.
Das als Bohrmaschine ausgebildete Elektrowerkzeug 1 weist im Gehäuse 2 einen Motor 3, eine Elektronik 16, ein Getriebe 4 und ein Schlagwerk 5 auf. Diese sind zu einer Einheit zusammengefasst und mittels einem ersten Gelenkrahmen 6.1 und einem zweiten Gelenkrahmen 6.2 sowie mittels einer Druckfeder 7, die zusammen eine Vorrichtung zur Reduktion der Vibrationen bilden, im Gehäuse 2 schwingend gelagert. Über das Netzkabel 8, das einen Schutzleiter 9 aufweist, wird der Motor 3 mit Strom versorgt.Trained as a
Zur Absicherung des Elektrowerkzeuges 1 ist ein Leiterkanal 11 im Gehäuse 2 angeordnet, der in einer Aufnahme 12 eine Schutzleiterlitze 13 aufweist. Die Schutzleiterlitze 13 ist einerseits an dem metallischen Gehäuse des Motors 3 angeschlossen und andererseits mit dem Schutzleiter 9 des Netzkabels 8 mittels einer Lüsterklemme 10 verbunden. Der Leiterkanal 11 ist einteilig ausgebildet und weist einen flexiblen Abschnitt 14 sowie einen starren Abschnitt 15 auf. Der in der
Zur Schaffung des flexiblen Abschnitts 14 ist der im Wesentlichen U-förmig ausgebildete Querschnitt mittels mehreren, schlitzförmigen Ausnehmungen 21 derart mehrfach geschwächt, dass der flexible Abschnitt 14 flexibel und doch formstabil wie eine Kette ist. Zur Fixierung der Schutzleiterlitze 13 sind an der Aufnahme 12 des Leiterkanals 11 im Bereich des flexiblen Abschnitts 14 mehrere als vorspringende Nasen ausgebildete erste Halteteile 22 und im Bereich des starren Abschnitts 15 mehrere als vorspringende Nasen ausgebildete zweite Halteteile 23 ausgebildet. Der Leiterkanal 11 ist aus einem Kunststoff im Spritz-/Gussverfahren gefertigt, wobei die einzelnen Elemente des Leiterkanals 11 in einem Guss ausgeformt sind.To create the
Der Leiterkanal 11 weist einen ersten Anschluss 25 für den Anschluss des Leiterkanals 11 an dem Gehäuse 2 und einen zweiten Anschluss 24 für den Anschluss des Leiterkanals 11 an einem metallischen Teil des Elektrogerätes 1, hier an dem Motor 3, auf. Der erste Anschluss 25 weist als Steckgeometrie 29 zwei Haken auf, welche in Ausnehmungen am Gehäuse 2 einsteckbar sind. Der zweite Anschluss 24 des Leiterkanals 11 umfasst eine Anschlussöse 26, die mit einer Öffnung 27 zur Durchführung einer Schraube 28 versehen ist. Mittels der Schraube 28 wird der Leiterkanal 11 am Motor 3 fixiert. Zur Ausrichtung der Anschlussöse 26 und deren Positionierung an dem Motor 3 ist zwischen der Anschlussöse 26 und der Aussenwandung des Motors 3 eine Fächerscheibe 30 vorgesehen.The
Die Schutzleiterlitze 13 ist werkseitig im Leiterkanal 11 angeordnet. Das eine Ende 32 der Schutzleiterlitze 13 steht über das freie Ende des Leiterkanals 11 vor, so dass dieses nach der Montage des Leiterkanals 11 im Elektrowerkzeug 1 nachträglich mit dem Schutzleiter 9 des Netzkabels 8 verbindbar ist. Das andere Ende 31 der Schutzleiterlitze 13 ist fest mit der Anschlussöse 26 verbunden.The
Claims (10)
- Power tool, more particularly a hand-held tool powered by an electric motor, featuring a power supply cord (8) which serves as the connection to a power supply and having a housing (2), there being arranged in said housing (2) at least one component such as a motor (3), electronics (16) and/or a gear box (4), and
featuring at least one conductor strand, the first end of which is adapted to be connected to a conductor of the power supply cord (8) and the second end of which is adapted to be attached in a conductive manner to the component of the power tool (1),
with the at least one conductor strand being arranged in a locator (12) of a conductor channel (11), which incorporates a rigid section (15), characterised in that
the conductor channel (11) is provided in the housing (2) of the power tool (1) and incorporates at least one flexible section (14) which is contiguous with the rigid section (15). - Power tool according to claim 1, characterised in that the at least one conductor strand is a protective conductor strand (13), the first end (32) of which is adapted to be connected to a protective earth (PE) conductor (9) on the power supply cord (8) and the second end (31) of which is adapted to be attached to a metallic part of one of the components arranged in the housing (2) of the power tool (1), such as the motor (3) and/or the gear box (4).
- Power tool according to claim 1 or 2, characterised in that the conductor channel (11) is a one-piece construction.
- Power tool according to any one of claims 1 to 3, characterised in that the flexible section (14) is formed on the conductor channel (11) by means of recesses (21) that are optionally slotted.
- Power tool according to any one of claims 1 to 4, characterised in that the conductor channel (11) incorporates retaining elements (22, 23) in order to locate the at least one conductor strand on the conductor channel (11).
- Power tool according to any one of claims 1 to 5, characterised in that the conductor channel (11) incorporates a first connection (25) for connecting the conductor channel (11) to the housing (2) and a second connection (24) for connecting the conductor channel (11) to one of the components of the power tool (1).
- Power tool according to claim 6, characterised in that the at least one conductor strand and the conductor channel (11) form one unit from the aspect of installation.
- Power tool according to claim 6 or 7, characterised in that the first connection (25) has a plug-in geometry (29) which is adapted so as to engage with a locator geometry on the housing (2).
- Power tool according to any one of claims 6 to 8, characterised in that the second connection comprises an eyelet (26) and optionally a serrated lock washer (28).
- Power tool according to any one of claims 1 to 9, characterised in that at least in certain areas the conductor channel (11) has an L-shaped cross-section, optionally a substantially U-shaped cross-section.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10340178A DE10340178B3 (en) | 2003-09-01 | 2003-09-01 | power tool |
DE10340178 | 2003-09-01 |
Publications (3)
Publication Number | Publication Date |
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EP1510300A2 EP1510300A2 (en) | 2005-03-02 |
EP1510300A3 EP1510300A3 (en) | 2006-02-15 |
EP1510300B1 true EP1510300B1 (en) | 2008-06-18 |
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ID=34089286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04104018A Active EP1510300B1 (en) | 2003-09-01 | 2004-08-20 | Electric tool |
Country Status (3)
Country | Link |
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US (1) | US7802632B2 (en) |
EP (1) | EP1510300B1 (en) |
DE (2) | DE10340178B3 (en) |
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-
2003
- 2003-09-01 DE DE10340178A patent/DE10340178B3/en not_active Expired - Fee Related
-
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- 2004-08-20 DE DE502004007377T patent/DE502004007377D1/en active Active
- 2004-08-20 EP EP04104018A patent/EP1510300B1/en active Active
- 2004-08-31 US US10/930,924 patent/US7802632B2/en active Active
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EP1510300A3 (en) | 2006-02-15 |
DE10340178B3 (en) | 2005-04-07 |
EP1510300A2 (en) | 2005-03-02 |
US7802632B2 (en) | 2010-09-28 |
DE502004007377D1 (en) | 2008-08-07 |
US20050085124A1 (en) | 2005-04-21 |
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