EP2501523B2 - Manually guided press device - Google Patents

Manually guided press device Download PDF

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Publication number
EP2501523B2
EP2501523B2 EP10781667.0A EP10781667A EP2501523B2 EP 2501523 B2 EP2501523 B2 EP 2501523B2 EP 10781667 A EP10781667 A EP 10781667A EP 2501523 B2 EP2501523 B2 EP 2501523B2
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EP
European Patent Office
Prior art keywords
pressing
electric motor
motor
manually guided
control device
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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Application number
EP10781667.0A
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German (de)
French (fr)
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EP2501523A1 (en
EP2501523B1 (en
Inventor
Martin Bungter
Volker Reichel
Jörg Hanisch
Günther Odenthal
Sven Meyer
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.)
Novopress GmbH Pressen und Presswerkzeuge and Co KG
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Novopress GmbH Pressen und Presswerkzeuge and Co KG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit

Definitions

  • the invention relates to a hand-held pressing device for connecting two workpieces.
  • the pressing device according to the invention is suitable for connecting a pipe to a press fitting by pressing.
  • the invention relates to hand-held pressing tools for pressing cable lugs.
  • Such hand-held pressing devices have a pressing tool with several pressing jaws.
  • the pressing jaws enclose the press fitting placed over the pipe. Closing the press jaws deforms or presses the press fitting and the pipe.
  • pressing tools for cable lugs these are pressed by closing pressing jaws, with the cable lug being arranged between at least two pressing jaws.
  • One of the pressing jaws can be fixed here.
  • the pressing tool is connected to a usually electro-hydraulic or electro-mechanical conversion device.
  • the conversion device is usually driven by an electric motor with the interposition of a gearbox.
  • a hydraulic conversion device includes a hydraulic pump, which is usually a piston pump or a gear pump.
  • the pump is driven by a brush motor.
  • the pumps used which have to generate a high torque, require a relatively low drive speed of usually 2,000 to 5,000 revolutions per minute due to their design.
  • a reduction gear is arranged between the motor and the pump.
  • a working piston is displaced by the hydraulic medium delivered by the pump.
  • the working piston is connected to the pressing jaws so that high pressing forces can be transferred to the pressing jaws via the working piston.
  • the pressure chamber provided for actuating the working piston is opened by a valve usually designed as a needle valve, so that there is an abrupt pressure reduction in the pressure chamber.
  • the pressure reduction leads to an increase in the speed of the pump, which is detected by a speed sensor and leads to the electric motor being switched off automatically.
  • the working piston is then pushed back via a return spring and the pressing jaws are thus opened.
  • a drive unit for a hand-held pressing device consisting of an electric motor and a hydraulic conversion device.
  • the pump driven by the engine, delivers a hydraulic medium that moves a working piston.
  • the working piston can be connected to a pressing tool.
  • Such hand-held pressing devices must be serviced at regular intervals.
  • the component that determines the maintenance interval is the brushed motor.
  • the brushes of the brushed motor are subject to very high wear due to the frequent starting under load and due to the provision of stop functions in which a short circuit is generated via the brush.
  • the object of the invention is to create a hand-held pressing device in which longer maintenance intervals are implemented.
  • the hand-held pressing device for connecting a pipe to a press fitting by pressing has a pressing tool with a plurality of pressing jaws.
  • the pressing tool is driven by an electric motor with the interposition of a conversion device.
  • the conversion device is in particular an electrohydraulic or electromechanical conversion device.
  • the electric motor is a brushless electric motor.
  • a brushless electric motor has the considerable advantage over the brushed motor used in known pressing tools that no brushes that are susceptible to wear are provided.
  • the brushes which are subject to high wear due to the heavy loads, can be omitted. This makes it possible to significantly extend the maintenance cycles.
  • the number of pressing operations that can be carried out between two maintenance operations can in particular be at least doubled or even tripled.
  • An advantage according to the invention of using a brushless electric motor to operate the pressing device is that additional functions can be implemented in a simple manner by a brushless electric motor or the control device of the brushless electric motor.
  • the speed required to generate a desired torque or a desired pressing force is controlled via a control device connected to the electric motor or integrated into it.
  • the current engine speed is determined by means of the control device and the electric motor is switched off when the speed increases.
  • a brushless electric motor according to the invention has the advantage that the maintenance costs are reduced since it is not necessary to replace the brushes or the entire brush motor.
  • the electric motor is an external or internal rotor motor.
  • the electric motor is preferably a brushless external rotor motor.
  • External rotor motors have the advantage over brushless internal rotor motors that they rotate more slowly and have a higher torque with the same torque have overall dimensions.
  • a seven-pole external rotor motor has a stator with twelve slots, with every second slot being wound. From this it follows that the field rotates by 60° when changing the phase.
  • the bell surrounding the stator or the external rotor has fourteen magnets or seven pairs of poles, which are distributed over 360°.
  • the outer rotor moves seven times slower than the field, so that the outer rotor turns by only 8.57° when the field moves by 60°. As a result, a low speed is achieved with an external rotor.
  • the brushless electric motor is connected directly to the converter device.
  • a reduction gear which is absolutely necessary when using brushed motors, can be omitted in this preferred development according to the invention.
  • the output shaft of the electric motor is connected directly to the hydraulic pump, i.e. to the drive shaft of the hydraulic pump. Due to the possible omission of the transmission in this embodiment, the costs can be reduced. In particular, however, the space required can be significantly reduced.
  • a particular advantage of using the brushless motor while omitting or greatly simplifying a reduction gear is that efficiency can be greatly improved. In particular due to the friction occurring in the transmission, losses occur which can be greatly reduced by greatly simplifying or even by completely omitting the transmission.
  • the output shaft of the electric motor is preferably arranged in such a way that it is coaxial with the drive shaft of the hydraulic pump. In this way, a simple connection of the shafts can be implemented with little installation space.
  • the current speed is determined via a control device connected to or integrated in the electric motor.
  • the motor speed can be inferred from the voltage induced in the windings. This makes it possible to easily detect that the engine speed is increasing. A sudden increase in engine speed occurs when the pressure valve opens, i.e. as soon as the required pressing force is reached. This increase in engine speed can be determined in a simple manner via the control device and used to switch off the electric motor.
  • the rotational speed sensor required in known pressing devices which is absolutely necessary for determining the increase in rotational speed when the valve is opened, can be dispensed with by using a brushless electric motor according to the invention. As a result, the manufacturing costs can be reduced.
  • this has the advantage that a component that is important for the function of the pressing device is replaced by the control device of the motor, and this results in a considerably more reliable determination of the rotational speed. A failure of the speed sensor, which can lead to significant damage to the pressing tool, can no longer occur.
  • the motor torque and/or the pressing force generated by the pressing jaws is determined or calculated directly via the parameters of the brushless electric motor. This makes it possible in a simple manner to switch off the electric motor automatically when the desired or set pressing force is reached.
  • Another advantage of using a brushless electric motor, in particular in connection with the control device that is already present or connected to the electric motor, is that when the set pressing force is reached or errors occur, the motor can be braked by appropriate control commands or by software .
  • the high level of wear that occurs with brushed motors, which occurs when the motor is braked via the short circuit generated, can thus be avoided.
  • Another advantage of using a brushless electric motor is that sensorless commutation is possible. It is therefore no longer necessary to provide fault-prone speed sensors for monitoring the press force or for process control.
  • an adjustment device is provided.
  • pressing parameters can be entered in a simple manner, for example via keys and a display. These are transmitted to the control device of the electric motor, so that direct, simple control of the electric motor and thus of the whole pressing device is possible.
  • the desired pressing force only has to be entered via the setting device.
  • a mechanical change for example by varying the pressure point at which the valve opens, is not required.
  • the construction of the pressing device is considerably simplified. Furthermore, there are no mechanical components which, particularly due to the high forces that occur, may be damaged or at least require more maintenance.
  • the type of pressing tool used via the setting device it is possible, for example, to enter the type of pressing tool used via the setting device.
  • This has the advantage that a hand-held pressing device can be provided in which the pressing tool can be exchanged.
  • a complex adaptation of the pressing device to the pressing tool is no longer necessary. It is only necessary to enter, for example, a code number for the pressing tool.
  • the type of pressing tool is automatically recognized by the pressing device. This can be done by labeling the pressing tool, which is in particular automatically detected by the control device. The user can thus change the pressing tool and does not have to ensure that the corresponding pressing parameters are adjusted. This avoids, for example, the maximum permissible pressing force for a specific pressing tool being exceeded.
  • a signal output device is connected to the control device of the brushless electric motor.
  • the completion of the compression can be signaled in a simple manner by the signal output device.
  • the occurrence of faults or the need to carry out maintenance can also be signaled by the signal output device.
  • the signal output device can be an acoustic and/or tactile (vibration) signal output device.
  • the particularly acoustic signal output can be realized directly by the control device.
  • the signal output device can also have a display.
  • the hand-held pressing device is operated in a preferred embodiment in such a way that the control device connected to the electric motor, as described above, is used to determine the speed.
  • the control device can also be used to control a signal output device.
  • the hand-held pressing device for connecting pipes using a press fitting by pressing ( 1 ) has a brushless electric motor 10 whose output shaft 12 is connected to an eccentric.
  • a pump piston 16 is operated via the eccentric.
  • the brushless electric motor 10 is connected to a chargeable battery (not shown), such as a rechargeable battery or a power pack or the mains, for the energy supply.
  • the hydraulic fluid is supplied to a chamber 20 via a control valve 18 .
  • Pumping the hydraulic fluid into the chamber 20 causes a working piston 22 to move to the left in the drawing.
  • the end of the working piston 22 on the left in the figure is connected to the pressing jaws 24 of the pressing tool 26 -.
  • the press jaws 24 are closed.
  • the pressing device shown thus has three main components, the pressing tool 26 , a conversion device 28 and the electric motor 10 .
  • a needle valve 30 is provided, which opens the chamber 20 when the pressing force is reached, so that the pressure in the chamber suddenly decreases. Due to this decrease in pressure in the chamber 20, the engine speed increases significantly. This increase in speed is detected by a control device 32, which is connected to the brushless electric motor 10, and causes the electric motor 10 to be switched off. As soon as the electric motor 10 is switched off, the working piston 22 is pushed back into its in 1 shown starting position pushed back.
  • control device 32 can be connected to an adjustment device 34 provided in particular on the housing of the pressing device (not shown). Pump parameters, pressing forces, etc. can be preselected via the setting device 34, which has a display 36 and input keys 38, for example.
  • the brushless electric motor provided according to the invention can be used as a signal output device. This can be an acoustic signal output, a tactile signal output, such as the generation of vibrations, or a act optical signal output via a display.
  • the existing display 36 of the setting device can also be used for signal output.
  • a pressing device is a pressing device for cable lugs ( 2 ).
  • This in 2 schematically illustrated pressing device for cable lugs is shown in a non-sectional side view, the operation of that of the basis 1 corresponds to the pressing tool described.
  • a brushless electric motor 10 is also provided according to the invention, which is also connected to an eccentric.
  • Within a housing 41 are thus the same components as on the basis 1 apparent, arranged. Only the essentially cylindrical intermediate part 42 ( 1 ) omitted. Instead, with the working piston 22 ( 1 ) Jaws 44 ( 2 ) tied together.
  • the pressing jaws 44 are arranged within a pressing jaw head 46 .
  • the pressing jaw head 46 has an opening 48 into which the pressing cable lug is inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Battery Mounting, Suspending (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)

Description

Die Erfindung betrifft ein handgeführtes Pressgerät zum Verbinden von zwei Werkstücken. Insbesondere ist das erfindungsgemäße Pressgerät zum Verbinden eines Rohrs mit einem Pressfitting durch Verpressen geeignet. Ferner betrifft die Erfindung handgeführte Presswerkzeuge zum Verpressen von Kabelschuhen.The invention relates to a hand-held pressing device for connecting two workpieces. In particular, the pressing device according to the invention is suitable for connecting a pipe to a press fitting by pressing. Furthermore, the invention relates to hand-held pressing tools for pressing cable lugs.

Derartige handgeführte Pressgeräte weisen ein Presswerkzeug mit mehreren Pressbacken auf. Die Pressbacken umschließen bei einem Presswerkzeug für Rohrverbindungen das über das Rohr gesteckte Pressfitting. Durch Schließen der Pressbacken erfolgt ein Verformen bzw. Verpressen des Pressfittings und des Rohrs. Bei Presswerkzeugen für Kabelschuhe werden diese durch Schließen von Pressbacken verpresst, wobei der Kabelschuh zwischen mindestens zwei Pressbacken angeordnet ist. Eine der Pressbacken kann hierbei feststehend sein. Zur Erzeugung der erforderlichen hohen Presskräfte ist das Presswerkzeug mit einer üblicherweise elektrohydraulischen oder elektromechanischem Umwandlungseinrichtung verbunden. Die Umwandlungseinrichtung wird in der Regel über einen Elektromotor unter Zwischenschaltung eines Getriebes angetrieben. Eine hydraulische Umwandlungseinrichtung weist eine Hydraulikpumpe auf, bei der es sich üblicherweise um eine Kolbenpumpe oder eine Zahnradpumpe handelt. Die Pumpe wird von einem Bürstenmotor angetrieben. Die eingesetzten Pumpen, durch die ein hohes Drehmoment erzeugt werden muss, verlangen bauartbedingt eine relativ geringe Antriebsdrehzahl von üblicherweise 2.000 bis 5.000 Umdrehungen pro Minute. Da der Bürstenmotor jedoch mit erheblich höheren Drehzahlen betrieben wird, ist zwischen dem Motor und der Pumpe ein Untersetzungsgetriebe angeordnet. Bei einer hydraulischen Umwandlungseinrichtung wird durch das von der Pumpe geförderte Hydraulikmedium ein Arbeitskolben verschoben. Der Arbeitskolben ist mit den Pressbacken verbunden, so dass über den Arbeitskolben hohe Presskräfte auf die Pressbacken übertragen werden können. Sobald die eingestellte bzw. vorgegebene maximale Presskraft erreicht ist, wird die zur Betätigung des Arbeitskolbens vorgesehene Druckkammer durch ein üblicherweise als Nadelventil ausgebildetes Ventil geöffnet, so dass eine schlagartige Druckreduzierung in der Druckkammer erfolgt. Die Druckreduzierung führt zu einer Drehzahlerhöhung der Pumpe, die über einen Drehzahlsensor detektiert wird und zu einem automatischen Abschalten des Elektromotors führt. Über eine Rückstellfeder erfolgt sodann ein Zurückdrücken des Arbeitskolbens und somit ein Öffnen der Pressbacken.Such hand-held pressing devices have a pressing tool with several pressing jaws. In the case of a pressing tool for pipe connections, the pressing jaws enclose the press fitting placed over the pipe. Closing the press jaws deforms or presses the press fitting and the pipe. In the case of pressing tools for cable lugs, these are pressed by closing pressing jaws, with the cable lug being arranged between at least two pressing jaws. One of the pressing jaws can be fixed here. In order to generate the necessary high pressing forces, the pressing tool is connected to a usually electro-hydraulic or electro-mechanical conversion device. The conversion device is usually driven by an electric motor with the interposition of a gearbox. A hydraulic conversion device includes a hydraulic pump, which is usually a piston pump or a gear pump. The pump is driven by a brush motor. The pumps used, which have to generate a high torque, require a relatively low drive speed of usually 2,000 to 5,000 revolutions per minute due to their design. However, since the brushed motor is operated at significantly higher speeds, a reduction gear is arranged between the motor and the pump. In a hydraulic conversion device, a working piston is displaced by the hydraulic medium delivered by the pump. The working piston is connected to the pressing jaws so that high pressing forces can be transferred to the pressing jaws via the working piston. As soon as the set or predetermined maximum pressing force is reached, the pressure chamber provided for actuating the working piston is opened by a valve usually designed as a needle valve, so that there is an abrupt pressure reduction in the pressure chamber. The pressure reduction leads to an increase in the speed of the pump, which is detected by a speed sensor and leads to the electric motor being switched off automatically. The working piston is then pushed back via a return spring and the pressing jaws are thus opened.

Aus DE 20 2006 001 889 U1 ist eine Antriebseinheit für ein handgeführtes Pressgerät bekannt, bestehend aus einem Elektromotor und einer hydraulischen Umwandlungseinrichtung. Die durch den Motor angetriebene Pumpe fördert ein Hydraulikmedium, durch das ein Arbeitskolben verschoben wird. Der Arbeitskolben kann mit einem Presswerkzeug verbunden werden.Out of DE 20 2006 001 889 U1 a drive unit for a hand-held pressing device is known, consisting of an electric motor and a hydraulic conversion device. The pump, driven by the engine, delivers a hydraulic medium that moves a working piston. The working piston can be connected to a pressing tool.

Derartige handgeführte Pressgeräte müssen in regelmäßigen Intervallen gewartet werden. Untersuchungen haben gezeigt, dass das das Wartungsintervall bestimmende Bauteil der Bürstenmotor ist. Aufgrund des häufigen Anfahrens unter Last sowie aufgrund des Vorsehens von Stoppfunktionen, bei denen über die Bürste ein Kurzschluss erzeugt wird, sind die Bürsten des Bürstenmotors sehr starkem Verschleiß ausgesetzt.Such hand-held pressing devices must be serviced at regular intervals. Studies have shown that the component that determines the maintenance interval is the brushed motor. The brushes of the brushed motor are subject to very high wear due to the frequent starting under load and due to the provision of stop functions in which a short circuit is generated via the brush.

Aufgabe der Erfindung ist es, ein handgeführtes Pressgerät zu schaffen, bei dem längere Wartungsintervalle realisiert sind.The object of the invention is to create a hand-held pressing device in which longer maintenance intervals are implemented.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1.The object is achieved according to the invention by the features of claim 1.

Das erfindungsgemäße handgeführte Pressgerät zum Verbinden eines Rohrs mit einem Pressfitting durch Verpressen weist ein Presswerkzeug mit mehreren Pressbacken auf. Das Presswerkzeug wird über einen Elektromotor unter Zwischenschaltung einer Umwandlungseinrichtung angetrieben. Bei der Umwandlungseinrichtung handelt es sich insbesondere um eine elektrohydraulische oder elektromechanische Umwandlungseinrichtung. Erfindungsgemäß handelt es sich bei dem Elektromotor um einen bürstenlosen Elektromotor. Ein bürstenloser Elektromotor hat gegenüber den in bekannten Presswerkzeugen verwendeten Bürstenmotor den erheblichen Vorteil, dass keine verschleißanfälligen Bürsten vorgesehen sind. Durch das Verwenden eines bürstenlosen Elektromotors können die aufgrund der starken Belastungen mit hohem Verschleiß belasteten Bürsten entfallen. Hierdurch ist es möglich, die Wartungszyklen deutlich zu verlängern. Die Anzahl der zwischen zwei Wartungen durchführbaren Verpressungen kann insbesondere mindestens verdoppelt oder gar verdreifacht werden. Ein erfindungsgemäßer Vorteil des Einsatzes eines bürstenlosen Elektromotors zum Betreiben des Pressgerätes besteht darin, dass durch einen bürstenlosen Elektromotor bzw. die Steuereinrichtung des bürstenlosen Elektromotors Zusatzfunktionen auf einfache Weise realisiert werden können. So erfolgt bei der Erfindung über eine mit dem Elektromotor verbundene oder in diesen integrierte Steuereinrichtung eine Steuerung der Drehzahl, die erforderlich ist um ein gewünschtes Drehmoment bzw. eine gewünschte Presskraft zu erzeugen. Erfindungsgemäß erfolgt mittels der Steuereinrichtung eine Bestimmung der aktuellen Motordrehzahl und der Elektromotor wird bei einem Drehzahlanstieg abgeschaltet.The hand-held pressing device according to the invention for connecting a pipe to a press fitting by pressing has a pressing tool with a plurality of pressing jaws. The pressing tool is driven by an electric motor with the interposition of a conversion device. The conversion device is in particular an electrohydraulic or electromechanical conversion device. According to the invention, the electric motor is a brushless electric motor. A brushless electric motor has the considerable advantage over the brushed motor used in known pressing tools that no brushes that are susceptible to wear are provided. By using a brushless electric motor, the brushes, which are subject to high wear due to the heavy loads, can be omitted. This makes it possible to significantly extend the maintenance cycles. The number of pressing operations that can be carried out between two maintenance operations can in particular be at least doubled or even tripled. An advantage according to the invention of using a brushless electric motor to operate the pressing device is that additional functions can be implemented in a simple manner by a brushless electric motor or the control device of the brushless electric motor. Thus, in the case of the invention, the speed required to generate a desired torque or a desired pressing force is controlled via a control device connected to the electric motor or integrated into it. According to the invention, the current engine speed is determined by means of the control device and the electric motor is switched off when the speed increases.

Ferner hat das erfindungsgemäße Verwenden eines bürstenlosen Elektromotors den Vorteil, dass die Wartungskosten reduziert werden, da ein Austausch der Bürsten oder des gesamten Bürstenmotors nicht erforderlich ist.Furthermore, the use of a brushless electric motor according to the invention has the advantage that the maintenance costs are reduced since it is not necessary to replace the brushes or the entire brush motor.

Bei dem Elektromotor handelt es sich um einen Außen- oder Innenläufer-Motor. Vorzugsweise handelt es sich bei dem Elektromotor um einen bürstenlosen Außenläufermotor. Außenläufermotoren haben gegenüber bürstenlosen Innenläufermotoren den Vorteil, dass diese langsamer drehen und ein höheres Drehmoment bei gleicher Gesamtabmessung aufweisen. Beispielsweise weist ein siebenpoliger Außenläufermotor einen Stator mit zwölf Nuten auf, wobei jede zweite Nut bewickelt ist. Hieraus folgt, dass sich das Feld beim Wechseln der Phase um 60° dreht. Die den Stator umgebende Glocke bzw. der Außenläufer weist in diesem Beispiel vierzehn Magnete bzw. sieben Polpaare auf, die über 360° verteilt angeordnet sind. Beim Wechsel der Phase bewegt sich der Außenläufer siebenmal langsamer als das Feld, so dass sich der Außenläufer bei einer Bewegung des Feldes um 60° lediglich um 8,57° dreht. Hierdurch ist bei einem Außenläufer eine geringe Drehzahl realisiert.The electric motor is an external or internal rotor motor. The electric motor is preferably a brushless external rotor motor. External rotor motors have the advantage over brushless internal rotor motors that they rotate more slowly and have a higher torque with the same torque have overall dimensions. For example, a seven-pole external rotor motor has a stator with twelve slots, with every second slot being wound. From this it follows that the field rotates by 60° when changing the phase. In this example, the bell surrounding the stator or the external rotor has fourteen magnets or seven pairs of poles, which are distributed over 360°. When changing the phase, the outer rotor moves seven times slower than the field, so that the outer rotor turns by only 8.57° when the field moves by 60°. As a result, a low speed is achieved with an external rotor.

Bei einer besonders bevorzugten Ausführungsform ist der bürstenlose Elektromotor unmittelbar mit der Umwandeleinrichtung verbunden. Ein beim Verwenden von Bürstenmotoren zwingend erforderliches Untersetzungsgetriebe kann in dieser bevorzugten erfindungsgemäßen Weiterbildung entfallen. Beim Vorsehen einer elektrohydraulischen Umwandlungseinrichtung ist es somit besonders bevorzugt, dass die Abtriebswelle des Elektromotors unmittelbar mit der Hydraulikpumpe, d.h. mit der Antriebswelle der Hydraulikpumpe verbunden ist. Aufgrund des in dieser Ausführungsform möglichen Verzichts auf das Getriebe können die Kosten reduziert werden. Insbesondere kann jedoch der erforderliche Bauraum erheblich reduziert werden. Ein besonderer Vorteil der Verwendung des bürstenlosen Motors unter Weglassung oder starker Vereinfachung eines Untersetzungsgetriebes besteht darin, dass der Wirkungsgrad erheblich verbessert werden kann. Insbesondere aufgrund der in dem Getriebe auftretenden Reibung treten Verluste auf, die durch eine starke Vereinfachung oder sogar durch das vollständige Weglassen des Getriebes stark reduziert werden können. Durch ein Weglassen des Getriebes, was bei Verwenden eines bürstenlosen Motors möglich ist, kann eine Steigerung des Wirkungsgrades von insbesondere über 20% und besonders bevorzugt über 25% erzielt werden. Dies hat den Vorteil, dass die Betriebsdauer bei Verwendung desselben Akkus erheblich verlängert werden kann oder, bei gleicher Betriebsdauer, ein kleinerer und damit leichterer Akku eingesetzt werden kann. Ein weiterer Vorteil der Vereinfachung oder Weglassung des Getriebes liegt darin, dass eine erheblich geringere Geräuschentwicklung erfolgt. Auch sind die auftretenden Vibrationen sowie die hervorgerufene Erwärmung geringer.In a particularly preferred embodiment, the brushless electric motor is connected directly to the converter device. A reduction gear, which is absolutely necessary when using brushed motors, can be omitted in this preferred development according to the invention. When providing an electro-hydraulic conversion device, it is therefore particularly preferred that the output shaft of the electric motor is connected directly to the hydraulic pump, i.e. to the drive shaft of the hydraulic pump. Due to the possible omission of the transmission in this embodiment, the costs can be reduced. In particular, however, the space required can be significantly reduced. A particular advantage of using the brushless motor while omitting or greatly simplifying a reduction gear is that efficiency can be greatly improved. In particular due to the friction occurring in the transmission, losses occur which can be greatly reduced by greatly simplifying or even by completely omitting the transmission. By omitting the gearing, which is possible when using a brushless motor, an increase in the efficiency of in particular over 20% and particularly preferably over 25% can be achieved. This has the advantage that the operating time can be significantly increased when using the same battery or, with the same operating time, a smaller and therefore lighter battery can be used. Another advantage of simplifying or omitting the gearbox is that there is significantly less noise. The vibrations that occur and the heating caused are also lower.

Vorzugsweise ist die Abtriebswelle des Elektromotors derart angeordnet, dass sie zur Antriebswelle der Hydraulikpumpe koaxial ist. Hierdurch kann eine einfache Verbindung der Wellen bei geringem Bauraum realisiert werden.The output shaft of the electric motor is preferably arranged in such a way that it is coaxial with the drive shaft of the hydraulic pump. In this way, a simple connection of the shafts can be implemented with little installation space.

Erfindungsgemäß erfolgt über eine mit dem Elektromotor verbundene oder in diesen integrierte Steuereinrichtung eine Bestimmung der aktuellen Drehzahl. Beispielsweise kann durch die in die Wicklungen induzierte Spannung ein Rückschluss auf die Motordrehzahl erfolgen. Hierdurch ist es möglich, auf einfache Weise zu detektieren, dass sich die Motordrehzahl erhöht. Ein sprunghafter Anstieg der Motordrehzahl erfolgt beim Öffnen des Druckventils, d.h. sobald die geforderte Presskraft erreicht ist. Dieser Drehzahlanstieg des Motors kann auf einfache Weise über die Steuereinrichtung bestimmt werden und zum Abschalten des Elektromotors genutzt werden. Der bei bekannten Pressgeräten erforderliche Drehzahlsensor, der zur Bestimmung des Drehzahlanstiegs beim Öffnen des Ventils zwingend notwendig ist, kann durch die erfindungsgemäße Verwendung eines bürstenlosen Elektromotors entfallen. Hierdurch können die Herstellungskosten reduziert werden. Insbesondere weist dies den Vorteil auf, dass ein für die Funktion des Pressgeräts wichtiges Bauteil durch die Steuereinrichtung des Motors ersetzt ist und hierdurch eine erheblich zuverlässigere Drehzahlbestimmung erfolgt. Ein Ausfallen des Drehzahlsensors, der zu einem erheblichen Beschädigen des Presswerkzeugs führen kann, kann nicht mehr auftreten.According to the invention, the current speed is determined via a control device connected to or integrated in the electric motor. For example, the motor speed can be inferred from the voltage induced in the windings. This makes it possible to easily detect that the engine speed is increasing. A sudden increase in engine speed occurs when the pressure valve opens, i.e. as soon as the required pressing force is reached. This increase in engine speed can be determined in a simple manner via the control device and used to switch off the electric motor. The rotational speed sensor required in known pressing devices, which is absolutely necessary for determining the increase in rotational speed when the valve is opened, can be dispensed with by using a brushless electric motor according to the invention. As a result, the manufacturing costs can be reduced. In particular, this has the advantage that a component that is important for the function of the pressing device is replaced by the control device of the motor, and this results in a considerably more reliable determination of the rotational speed. A failure of the speed sensor, which can lead to significant damage to the pressing tool, can no longer occur.

Bei einer weiteren bevorzugten Ausführungsform erfolgt unmittelbar über die Parameter des bürstenlosen Elektromotors eine Bestimmung bzw. Berechnung des Motordrehmoments und/ oder der von den Pressbacken erzeugten Presskraft. Hierdurch ist es auf einfache Weise möglich, bei Erreichen der gewünschten bzw. eingestellten Presskraft automatisch ein Abschalten des Elektromotors zu realisieren.In a further preferred embodiment, the motor torque and/or the pressing force generated by the pressing jaws is determined or calculated directly via the parameters of the brushless electric motor. This makes it possible in a simple manner to switch off the electric motor automatically when the desired or set pressing force is reached.

Ein weiterer Vorteil des Verwendens eines bürstenlosen Elektromotors, insbesondere in Verbindung mit der bereits vorhandenen oder mit dem Elektromotor verbundenen Steuereinrichtung, besteht darin, dass bei Erreichen der eingestellten Presskraft oder bei Auftreten von Fehlern ein Abbremsen des Motors durch entsprechende Steuerbefehle bzw. durch Software erfolgen kann. Der bei Bürstenmotoren auftretende hohe Verschleiß, der beim Bremsen des Motors über den erzeugten Kurzschluss erfolgt, kann somit vermieden werden.Another advantage of using a brushless electric motor, in particular in connection with the control device that is already present or connected to the electric motor, is that when the set pressing force is reached or errors occur, the motor can be braked by appropriate control commands or by software . The high level of wear that occurs with brushed motors, which occurs when the motor is braked via the short circuit generated, can thus be avoided.

Ein weiterer Vorteil des Verwendens eines bürstenlosen Elektromotors besteht darin, dass eine sensorlose Kommutierung möglich ist. Das Vorsehen störanfälliger Drehzahlgeber zur Presskraftüberwachung bzw. zur Ablaufsteuerung ist daher nicht mehr notwendig.Another advantage of using a brushless electric motor is that sensorless commutation is possible. It is therefore no longer necessary to provide fault-prone speed sensors for monitoring the press force or for process control.

In bevorzugter Weiterbildung des Pressgeräts ist eine Einstelleinrichtung vorgesehen. Mit Hilfe der Einstelleinrichtung können beispielsweise über Tasten und ein Display Pressparameter auf einfache Weise eingegeben werden. Diese werden an die Steuereinrichtung des Elektromotors übertragen, so dass eine unmittelbare einfache Steuerung des Elektromotors und damit des gesamten Pressgerätes möglich ist. Je nach Ausgestaltung der Steuereinrichtung und der durch die Steuereinrichtung bestimmten Parameter ist es somit möglich, dass die gewünschte Presskraft lediglich über die Einstelleinrichtung eingegeben werden muss. Eine mechanische Veränderung, durch die beispielsweise der Druckpunkt, an dem das Ventil öffnet, variiert wird, ist nicht erforderlich. Insofern ist der Aufbau des Pressgeräts erheblich vereinfacht. Ferner entfallen mechanische Bauteile, die, insbesondere aufgrund der auftretenden hohen Kräfte, ggf. beschädigt werden oder zumindest wartungsintensiver sind.In a preferred development of the pressing device, an adjustment device is provided. With the help of the setting device, pressing parameters can be entered in a simple manner, for example via keys and a display. These are transmitted to the control device of the electric motor, so that direct, simple control of the electric motor and thus of the whole pressing device is possible. Depending on the design of the control device and the parameters determined by the control device, it is therefore possible that the desired pressing force only has to be entered via the setting device. A mechanical change, for example by varying the pressure point at which the valve opens, is not required. In this respect, the construction of the pressing device is considerably simplified. Furthermore, there are no mechanical components which, particularly due to the high forces that occur, may be damaged or at least require more maintenance.

Bei einer besonders bevorzugten Weiterbildung der Erfindung ist es beispielsweise über die Einstelleinrichtung möglich, die Art des verwendeten Presswerkzeugs einzugeben. Dies hat den Vorteil, dass ein handgeführtes Pressgerät vorgesehen werden kann, bei dem das Presswerkzeug auswechselbar ist. Eine aufwändige Anpassung des Pressgeräts an das Presswerkzeug ist hierbei nicht mehr erforderlich. Es ist lediglich erforderlich, beispielsweise eine Kennziffer des Presswerkzeuges einzugeben. In besonders bevorzugter Weiterbildung erfolgt ein automatisches Erkennen der Art des Presswerkzeugs durch das Pressgerät. Dies kann durch eine Kennzeichnung des Presswerkzeugs erfolgen, die insbesondere automatisch von der Steuereinrichtung erfasst wird. Der Benutzer kann somit das Presswerkzeug auswechseln und muss nicht darauf achten, dass die entsprechenden Pressparameter angepasst werden. Hierdurch ist beispielsweise vermieden, dass die für ein bestimmtes Presswerkzeug maximal zulässige Presskraft überschritten wird.In a particularly preferred development of the invention, it is possible, for example, to enter the type of pressing tool used via the setting device. This has the advantage that a hand-held pressing device can be provided in which the pressing tool can be exchanged. A complex adaptation of the pressing device to the pressing tool is no longer necessary. It is only necessary to enter, for example, a code number for the pressing tool. In a particularly preferred development, the type of pressing tool is automatically recognized by the pressing device. This can be done by labeling the pressing tool, which is in particular automatically detected by the control device. The user can thus change the pressing tool and does not have to ensure that the corresponding pressing parameters are adjusted. This avoids, for example, the maximum permissible pressing force for a specific pressing tool being exceeded.

Bei einer weiteren bevorzugten Ausführungsform der Erfindung ist mit der Steuereinrichtung des bürstenlosen Elektromotors eine Signalausgabeeinrichtung verbunden. Durch die Signalausgabeeinrichtung kann auf einfache Weise das Fertigstellen der Verpressung signalisiert werden. Auch das Auftreten von Störungen oder das Erfordernis, eine Wartung durchzuführen, kann durch die Signalausgabeeinrichtung signalisiert werden. Bei der Signalausgabeeinrichtung kann es sich um eine akustische und/ oder taktile (Vibration) Signalausgabeeinrichtung handeln. Die insbesondere akustische Signalausgabe kann hierbei unmittelbar durch die Steuereinrichtung verwirklicht werden. Zusätzlich kann die Signalausgabeeinrichtung auch ein Display aufweisen.In a further preferred embodiment of the invention, a signal output device is connected to the control device of the brushless electric motor. The completion of the compression can be signaled in a simple manner by the signal output device. The occurrence of faults or the need to carry out maintenance can also be signaled by the signal output device. The signal output device can be an acoustic and/or tactile (vibration) signal output device. The particularly acoustic signal output can be realized directly by the control device. In addition, the signal output device can also have a display.

Erfindungsgemäß wird das handgeführte Pressgerät in bevorzugter Ausführungsform derart betrieben, dass die mit dem Elektromotor verbundene Steuereinrichtung, wie vorstehend beschrieben, zum Bestimmen der Drehzahl verwendet wird. Zusätzlich kann die Steuereinrichtung auch zum Steuern einer Signalausgabeeinrichtung verwendet werden.According to the invention, the hand-held pressing device is operated in a preferred embodiment in such a way that the control device connected to the electric motor, as described above, is used to determine the speed. In addition, the control device can also be used to control a signal output device.

Nachfolgend wird die Erfindung anhand bevorzugter Ausführungsformen unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention is explained in more detail below on the basis of preferred embodiments with reference to the accompanying drawings.

Es zeigen:

Fig. 1
eine schematische Schnittansicht einer erfindungsgemäßen Ausführungsform eines handgeführten Pressgeräts Zum Verbinden eines Rohrs mit einem Pressfitting durch Verpressen, und
Fig. 2
eine schematische Seitenansicht einer erfindungsgemäßen Ausführungsform eines handgeführten Pressgeräts zum Verpressen von Kabelschuhen.
Show it:
1
a schematic sectional view of an embodiment according to the invention of a hand-held pressing device for connecting a pipe to a press fitting by pressing, and
2
a schematic side view of an embodiment according to the invention of a hand-held pressing device for pressing cable lugs.

Das handgeführte Pressgerät zum Verbinden von Rohren mittels eines Pressfittings durch Verpressen (Fig. 1) weist einen bürstenlosen Elektromotor 10 auf, dessen Abtriebswelle 12 mit einem Exzenter verbunden ist. Über den Exzenter wird ein Pumpenkolben 16 betrieben. Ferner ist der bürstenlose Elektromotor 10 zur Energieversorgung mit einer nicht dargestellten aufladbaren Batterie, wie einem Akku oder einem Netzteil oder dem Netz, verbunden.The hand-held pressing device for connecting pipes using a press fitting by pressing ( 1 ) has a brushless electric motor 10 whose output shaft 12 is connected to an eccentric. A pump piston 16 is operated via the eccentric. Furthermore, the brushless electric motor 10 is connected to a chargeable battery (not shown), such as a rechargeable battery or a power pack or the mains, for the energy supply.

Über ein Steuerventil 18 wird das Hydraulikfluid einer Kammer 20 zugeführt. Durch Pumpen des Hydraulikfluids in die Kammer 20 erfolgt ein Bewegen eines Arbeitskolbens 22 in der Zeichnung nach links. Das in der Figur linke Ende des Arbeitskolbens 22 ist mit den Pressbacken 24 des Presswerkzeugs 26 verbunden -. Durch Erhöhen des Drucks in der Kammer 20 und ein hierdurch hervorgerufenes Verschieben des Arbeitskolbens 22 nach links erfolgt somit ein Schließen der Pressbacken 24. Die Pressbacken 24 umschließen das nicht dargestellte Rohr sowie das das Rohr umgebende Pressfitting, die in einer Ausnehmung 25 angeordnet sind.The hydraulic fluid is supplied to a chamber 20 via a control valve 18 . Pumping the hydraulic fluid into the chamber 20 causes a working piston 22 to move to the left in the drawing. The end of the working piston 22 on the left in the figure is connected to the pressing jaws 24 of the pressing tool 26 -. By increasing the pressure in the chamber 20 and thereby causing the working piston 22 to move to the left, the press jaws 24 are closed.

Das dargestellte Pressgerät weist somit drei Hauptbestandteile, das Presswerkzeug 26, eine Umwandeleinrichtung 28 sowie den Elektromotor 10 auf.The pressing device shown thus has three main components, the pressing tool 26 , a conversion device 28 and the electric motor 10 .

Bei der dargestellten Ausführungsform ist ein Nadelventil 30 vorgesehen, das bei Erreichen der Presskraft die Kammer 20 öffnet, so dass der Druck in der Kammer schlagartig abnimmt. Aufgrund dieser Druckabnahme in der Kammer 20 erhöht sich die Motordrehzahl signifikant. Diese Drehzahlerhöhung wird über eine Steuereinrichtung 32, die mit dem bürstenlosen Elektromotor 10 verbunden ist, detektiert und führt zum Abschalten des Elektromotors 10. Sobald der Elektromotor 10 abgeschaltet ist, wird der Arbeitskolben 22 durch die Feder 34 wieder in seine, in Fig. 1 dargestellten Ausgangsstellung zurückgedrückt.In the illustrated embodiment, a needle valve 30 is provided, which opens the chamber 20 when the pressing force is reached, so that the pressure in the chamber suddenly decreases. Due to this decrease in pressure in the chamber 20, the engine speed increases significantly. This increase in speed is detected by a control device 32, which is connected to the brushless electric motor 10, and causes the electric motor 10 to be switched off. As soon as the electric motor 10 is switched off, the working piston 22 is pushed back into its in 1 shown starting position pushed back.

Ferner kann die Steuereinrichtung 32 mit einer, insbesondere an dem nicht dargestellten Gehäuse des Pressgeräts vorgesehenen Einstelleinrichtung 34 verbunden sein. Über die Einstelleinrichtung 34, die beispielsweise ein Display 36 sowie Eingabetasten 38 aufweist, können Pumpenparameter, Presskräfte etc. vorgewählt werden. Ferner kann der erfindungsgemäß vorgesehene bürstenlose Elektromotor als Signalausgabeeinrichtung genutzt werden. Hierbei kann es sich um eine akustische Signalausgabe, eine taktile Signalausgabe, wie das Erzeugen von Vibrationen, oder auch um eine optische Signalausgabe über ein Display handeln. Selbstverständlich kann auch das bereits vorhandene Display 36 der Einstelleinrichtung zur Signalausgabe genutzt werden.Furthermore, the control device 32 can be connected to an adjustment device 34 provided in particular on the housing of the pressing device (not shown). Pump parameters, pressing forces, etc. can be preselected via the setting device 34, which has a display 36 and input keys 38, for example. Furthermore, the brushless electric motor provided according to the invention can be used as a signal output device. This can be an acoustic signal output, a tactile signal output, such as the generation of vibrations, or a act optical signal output via a display. Of course, the existing display 36 of the setting device can also be used for signal output.

Bei einer weiteren bevorzugten Ausführungsform eines Pressgeräts handelt es sich um ein Pressgerät für Kabelschuhe (Fig. 2). Das in Fig. 2 schematisch dargestellte Pressgerät für Kabelschuhe ist in einer nicht geschnittenen Seitenansicht dargestellt, wobei die Funktionsweise derjenigen des anhand Fig. 1 beschriebenen Presswerkzeugs entspricht. Insbesondere ist erfindungsgemäß ebenfalls ein bürstenloser Elektromotor 10 vorgesehen, der ebenfalls mit einem Exzenter verbunden ist. Innerhalb eines Gehäuses 41 sind somit dieselben Bauteile, wie anhand Fig. 1 ersichtlich, angeordnet. Lediglich das zur Aufnahme der Pressbacken vorgesehene, im Wesentlichen zylindrische Zwischenteil 42 (Fig. 1) entfällt. Stattdessen sind mit dem Arbeitskolben 22 (Fig. 1) Pressbacken 44 (Fig. 2) verbunden. Die Pressbacken 44 sind innerhalb eines Pressbackenkopfes 46 angeordnet. Der Pressbackenkopf 46 weist eine Öffnung 48 auf, in die der verpressende Kabelschuh eingeführt wird.Another preferred embodiment of a pressing device is a pressing device for cable lugs ( 2 ). This in 2 schematically illustrated pressing device for cable lugs is shown in a non-sectional side view, the operation of that of the basis 1 corresponds to the pressing tool described. In particular, a brushless electric motor 10 is also provided according to the invention, which is also connected to an eccentric. Within a housing 41 are thus the same components as on the basis 1 apparent, arranged. Only the essentially cylindrical intermediate part 42 ( 1 ) omitted. Instead, with the working piston 22 ( 1 ) Jaws 44 ( 2 ) tied together. The pressing jaws 44 are arranged within a pressing jaw head 46 . The pressing jaw head 46 has an opening 48 into which the pressing cable lug is inserted.

Im Übrigen entspricht der Aufbau des in Fig. 2 dargestellten Presswerkzeuges, insbesondere hinsichtlich der Ausgestaltung des Antriebs für die Pressbacken, dem anhand Fig. 1 beschriebenen Presswerkzeug.Otherwise, the structure of the in 2 illustrated pressing tool, in particular with regard to the design of the drive for the pressing jaws, the basis 1 described pressing tool.

Claims (8)

  1. A manually guided press device for connecting two work pieces, in particular a pipe and a press fitting, by pressing, comprising
    a pressing tool (26) with a plurality of pressing jaws (24), and
    a converting device (28) connected to the pressing tool (26) and driven by an electric motor (10), wherein the electric motor (10) is connected to a pumping piston (16) via an eccentric, for pumping a hydraulic fluid into a chamber (20) of the converting device (28) via a control valve (18), whereby the pressing jaws of the pressing tool close, wherein a needle valve (30) is provided, so that upon reaching the set or predetermined maximum pressing force, the needle valve (30) opens the chamber (20), whereby the pressure in the chamber (20) decreases abruptly,
    characterized in that
    the electric motor (10) is designed as a brushless electric motor,
    the electric motor (10) is connected to a control device (32) for controlling the rotational speed, and a determination of the current rotational speed of the motor is made by means of the control device (32), and the electric motor (10) is deactivated upon an significant increase in rotational speed.
  2. The manually guided press device of claim 1, characterized in that the electric motor (10) is designed as a brushless external rotor motor.
  3. The manually guided press device of claim 1, characterized in that the electric motor (10) is designed as a brushless internal rotor motor.
  4. The manually guided press device of one of claims 1-3, characterized in that the electric motor (10) is directly connected to the converting device (28).
  5. The manually guided press device of one of claims 1 - 4, characterized in that the control device (32) is used to determine the rotary moment of the motor and/or the pressing force generated by the pressing jaws (24).
  6. The manually guided press device of one of claims 1-5, characterized by a setting device (34) for inputting press parameters, the setting device being connected to the control device (32).
  7. The manually guided press device of one of claims 1 - 6, characterized by a signal output device (40) connected to the control device (32).
  8. A method for operating a manually guided press device of one of claims 1-7, wherein
    the pressing is started,
    the voltage induced into the windings of the motor is detected,
    the rotational speed of the motor is determined based on the detected voltage, and
    the motor is deactivated upon the significant increase in rotational speed.
EP10781667.0A 2009-11-17 2010-11-17 Manually guided press device Active EP2501523B2 (en)

Applications Claiming Priority (2)

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DE202009015515U DE202009015515U1 (en) 2009-11-17 2009-11-17 Hand-held pressing device
PCT/EP2010/067641 WO2011061212A1 (en) 2009-11-17 2010-11-17 Manually guided press device

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EP2501523B1 EP2501523B1 (en) 2015-04-29
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EP (1) EP2501523B2 (en)
AU (1) AU2010320961B2 (en)
DE (1) DE202009015515U1 (en)
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EP4005733A1 (en) * 2020-11-27 2022-06-01 Hilti Aktiengesellschaft Eccentric transmission for a machine tool
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ES2543168T5 (en) 2023-10-04
ES2543168T3 (en) 2015-08-17
EP2501523A1 (en) 2012-09-26
HK1175436A1 (en) 2013-07-05
US20120284981A1 (en) 2012-11-15
AU2010320961A1 (en) 2012-05-31
AU2010320961B2 (en) 2015-10-08
EP2501523B1 (en) 2015-04-29
DE202009015515U1 (en) 2011-04-07
WO2011061212A1 (en) 2011-05-26

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