EP1170093A2 - Fastening tool - Google Patents

Fastening tool Download PDF

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Publication number
EP1170093A2
EP1170093A2 EP01810620A EP01810620A EP1170093A2 EP 1170093 A2 EP1170093 A2 EP 1170093A2 EP 01810620 A EP01810620 A EP 01810620A EP 01810620 A EP01810620 A EP 01810620A EP 1170093 A2 EP1170093 A2 EP 1170093A2
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EP
European Patent Office
Prior art keywords
screw
spindle
hollow spindle
coupling
screwing 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.)
Granted
Application number
EP01810620A
Other languages
German (de)
French (fr)
Other versions
EP1170093A3 (en
EP1170093B1 (en
Inventor
Horst Rahmsdorf
Thomas Hofbrucker
Markus Looser
Thomas Bader
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.)
Hilti AG
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Hilti AG
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Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1170093A2 publication Critical patent/EP1170093A2/en
Publication of EP1170093A3 publication Critical patent/EP1170093A3/en
Application granted granted Critical
Publication of EP1170093B1 publication Critical patent/EP1170093B1/en
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    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/023—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket for imparting an axial impact, e.g. for self-tapping screws

Definitions

  • the invention relates to a screwing device according to the preamble of patent claim 1.
  • a reduction in this contact pressure is achieved, for example, with pneumatically operated ones Screwdrivers achieved, as is known for example from DE-1 478 914.
  • This Pneumatically operated screwdriver has a screw-in spindle that counteracts the Force of a spring against a direction of rotation relative to a housing of the Screwdriver is displaceable.
  • One between the screw-in spindle and a hollow spindle arranged coupling ensures a non-rotatable connection between the screw and the hollow spindle, which can be driven by a drive motor, if the screwing device is equipped with a corresponding contact pressure is pressed against the surface, so that a The insertion spindle is moved in the direction of the hollow spindle.
  • the screw When fastening a plasterboard to a sheet metal frame, the screw is first driven by the drive motor via the hollow spindle, so that the Drywall screw drills through the plasterboard until the tip of the drywall screw comes to rest on the surface of the sheet metal frame. Then practice a striking mass that can be accelerated in the direction of rotation strikes the screw and the quick-build screw that interacts with the screw. The screw-in spindle is accelerated in the screw-in direction and the tip of the drywall screw creates a hole in the sheet metal frame into which the drywall screw Is driven far. Because the rotational connection between the screw and the hollow spindle is interrupted during the axial displacement of the screw-in spindle is a purely axial displacement of the drywall screw without twisting the same.
  • the thread of the drywall screw widens the hole in the Sheet metal frame so far that a remaining part of the thread of the drywall screw in a subsequent screwing-in process, there is no receiving thread in the wall of the Hole can do more by the fast construction screw finds sufficient hold.
  • the compressed air required to operate this pneumatically operated screwdriver is generated with an external compressor and, for example, also in one externally arranged compressed air tank provided.
  • the external arrangement of the Compressor or the compressed air tank makes the use of a compressed air hose necessary, which significantly affects the handling of the screwdriver.
  • the invention has for its object to a manageable screwdriver create with which you can get a good screwing quality of the fast construction screws in the sheet metal frame with significantly reduced contact pressure for the user. It the screw should be displaceable in the direction of rotation without impact that the rotational connection between the insertion spindle and the hollow spindle is interrupted.
  • the rotary movement emanating from a drive motor is in the inventive Screwdriver via an axially limited displaceable relative to the housing and rotatably mounted hollow spindle transferred to a screw-in spindle, the axial is movable but rotatably guided in the hollow spindle.
  • the drywall screw creates a hole in the sheet metal frame and the thread of the drywall screw cuts a corresponding mounting thread in the Wall of the hole in the sheet metal frame in which the drywall screw is secure is definable.
  • a particularly secure and non-rotatable connection between the hollow spindle and the screw-in spindle is preferably carried out with at least one spherical locking element, which is arranged in a radial receiving bore of the hollow spindle and in a longitudinal groove of the screw protrudes.
  • An automatic transfer of the hollow spindle from a working position to its direction of rotation Starting position and a resolution of the non-rotatable connection between the hollow spindle and the drive shaft of the drive motor is preferred with at least one spring of the clutch when lifting the screwdriver from the Plasterboard, reached.
  • a particularly compact design which particularly affects the overall length of the Screwdriver has a positive effect, is preferably achieved in that advantageously the hollow spindle, the coupling and a rotary connection with the drive shaft of the Interacting drive motor passes through gear.
  • the hollow spindle is expedient firmly connected to a first coupling part of the coupling on the direction of rotation, the first coupling part, against the force of a spring of the coupling, against the direction of rotation to an axially displaceable and freely rotatable relative to the hollow spindle second clutch part of the clutch displaceable and the second clutch part against Force of a second spring of the clutch, against the direction of rotation to the gear of the Movable gear.
  • the gear can be arranged in the immediate vicinity of the hollow spindle, the Coupling and the gear wheel of the gearbox together with the hollow spindle and the screw-in spindle Prefabricated as a unit and when assembling the screwdriver in one Operation can be inserted into the housing.
  • the impact mass interacting with the screw-in spindle is preferably one Electromagnets can be accelerated in the direction of rotation. With the help of the electromagnet uniformly strong impacts can be generated, which affect the screw quality in particular of the fast construction screws have a positive effect.
  • the impact mass is, for example, made up of at least two coaxially arranged to each other Single impact masses formed, with a first individual impact mass on the direction of rotation made of a non-magnetizable material and a second single impact mass is formed from a magnetizable material.
  • the magnetizable single impact mass is not permanently magnetized, but is only magnetized as long the coil of a magnet is under tension.
  • the impact mass can, for example also be a piston that is guided within a cylinder and can be counteracted with compressed air the force of a return spring can be moved in the working direction. But it is also possible the impact mass - the piston - against the direction of rotation with the help of compressed air offset. A spring is biased to accelerate the impact mass takes over at the desired time. The displacement of the piston against the direction of rotation for example with compressed air.
  • the compressed air can be generated for example with a compressor that with the housing of the screwdriver is connected.
  • This compressor can be driven, for example with the electric drive motor of the screwdriver. It means that the compressor, the necessary valves and, if necessary, a compressed air reservoir directly are attached to the housing of the screwdriver or installed in the housing.
  • the impact energy can be metered, for example, by adjusting the operating pressure.
  • the impact mass can preferably be displaced with the aid of a fast-erecting screw or the screw-in spindle and a conductive surface standing electronics take place when touching the screw of the surface emits a corresponding trigger signal to the electromagnet.
  • the electronics are there for example with the sheet metal frame forming the subsurface and with the drywall screw or the screw-in spindle in electrical connection. With the help of a capacity comparison measurement, which occurs with the electronics, the corresponding trigger signal can be produce.
  • An automatic acceleration of the impact mass in the direction of rotation can, for example can also be achieved by the speed of the drilling progress Drywall screw is monitored by the plasterboard or the sheet metal frame.
  • This Monitoring can be carried out, for example, with a measuring sensor electrical potentiometer, which is coupled to a movable depth stop is. If the drilling progress when hitting the drywall screw on the Sheet metal frame slows down, a certain current or voltage curve changes that arises when drilling through the plasterboard. This change can be made by an evaluation electronics be detected and form the signal for triggering the blow.
  • the invention is based on a drawing, which is a partially shown in longitudinal section Illustrates embodiment, explained in more detail.
  • the screwing device has a housing which is not shown completely 1, an electric drive motor 2, a hollow spindle rotatably mounted in the housing 1 3, a gear 24 and a coupling 6 which interacts with the hollow spindle 3.
  • the hollow spindle 3 serves for the axially movable but non-rotatable reception of a screw-in spindle 5, in the end region on the direction of rotation with a tool holder 4 is provided.
  • a screwdriver bit 18 is used, which is on a head of a screwdriver screw 22 matched rotary driving surfaces having.
  • An end area of the screw that points against the direction of screwing 5 has a rounded face.
  • the non-rotatable arrangement of the screw 5 in the hollow spindle 3 serve spherical locking elements 13 which in radial receiving bores 14 of the hollow spindle 3 are mounted and in corresponding Longitudinal grooves 12 of the screw 5 protrude.
  • the drive shaft 19 of the drive motor 2 extends essentially perpendicular to the direction of rotation.
  • the transmission 24 has a bevel gear.
  • the screwing device shown is used to fasten plasterboard 20 Sheet metal frame 21 with the help of drywall screws 22, through the plasterboard 20th can be screwed into the sheet metal frame 21.
  • the illustration shows one in the Plasterboard 20 screwed drywall screw 22.
  • the hollow spindle 3 and Coupling 6 are drawn in the disengaged position.
  • the transmission of one from Drive motor 2 outgoing rotary movement on the screw 5 is interrupted.
  • the one arranged in the drive train between the drive motor 2 and the hollow spindle 3 Coupling 6 has a first coupling part 7 on the direction of rotation, which with the hollow spindle 3 is firmly connected. Against the force of a first spring 9, this is first coupling part 7 against the direction of rotation with respect to the hollow spindle 3 axially displaceable and freely rotatable second coupling part 8 displaceable.
  • the second Coupling part 8 is against the force of a second spring 10, against the direction of rotation to a gear 11 of the gear 24 displaceable, which is also from the hollow spindle 3rd is penetrated and in a rotationally locked connection with the drive shaft 19 of the drive motor 2 stands.
  • the coil of an electromagnet 17 and is located coaxially behind the hollow spindle 3 an impact mass 15 arranged in the coil and displaceable parallel to the direction of insertion with a hardened insert 16.
  • the one with the rounded face of the screw 5 interacting, hardened insert, for example a commercially available, hardened cylinder pin, over which the impact energy of the entire impact mass 15 is transferred to the screw 5.
  • the impact mass 15 is returned by a return spring 23 in held in a starting position in which a magnetizable part of the impact mass 15 for the most part is arranged outside the coil of the electromagnet 17.
  • the length of the screw 5 is dimensioned so that only then a blow to it Striking surface can take place when the clutch 6 by axially moving the hollow spindle 3 is engaged against the direction of rotation. This means there are no additional components ensures the function of a pressure lock.
  • An empty stroke of the batter 15 is caught by a corresponding stop 25 in a holder of the coil.
  • the coil of the electromagnet 17 is, for example, by a not shown Electronic circuit can be controlled. This is designed so that it responds to the signal of a also not shown sensor for sheet metal frame detection out the coil of Electromagnets 17 are supplied with a defined voltage for a defined period of time. The resulting magnetic force makes the magnetizable impact mass 15 accelerated against the force of the return spring 23 in the direction of rotation.
  • the impact mass 15 hits behind the Hollow spindle 3 on the screw 5 and their kinetic energy in the form of a elastic impact on the screw 5 and thus on the screwdriver bit 18 and Transfer the quick-assembly screw 22 to be moved. After the blow, the Impact mass 15 moved back to its starting position by the return spring 23. After the tip of the drywall screw 22 as described by the wall of the Sheet metal frame 21 was driven, the initiated screwing process ends until the clutch 6 disengages.
  • the strike trigger can, for example, automatically as a result of a response schematically illustrated sensor electronics 26, the contact of the Drywall screw tip detected with the surface of the sheet metal frame 21, take place.
  • the sensor electronics 26 with the coupling engaged with the screw-in spindle Surface of the sheet metal frame 21 and the Elektromangnet 17 be conductively connected.
  • the connecting lines are shown in dashed lines.
  • the screw is here For example, using plastic bushings and non-conductive ceramic balls Torque transmission installed electrically insulated to avoid disruptive influences off.
  • This electrical contact is made here by connecting to a conductive bearing bush.
  • the stepped end of the screw-in spindle provides for when the clutch is disengaged an electrically separating gap between the socket and the tool holder. First the axial movement when the clutch is pressed in, the contact closes and avoids additional ones False triggers and blanks.
  • the sensor electronics that can be used here, for example, are Capacity comparison measurement of the system screw-in spindle, screwdriver bit, self-drilling screw without and with the sheet metal frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Transmission Devices (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Portable Power Tools In General (AREA)
  • Materials For Medical Uses (AREA)
  • Graft Or Block Polymers (AREA)
  • Dowels (AREA)

Abstract

A screwing appliance has a casing (1), a rotatable hollow spindle (3) in the casing with limited axial re locatable capability and a non-rotating screw-in spindle (5) opposite the hollow spindle also with limited axial re locatable capability that can be relocated in a screw-in direction by an impact material mass (15). A coupling (6) fits between a drive motor (2) and the rotatable hollow spindle.

Description

Die Erfindung betrifft ein Schraubgerät gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a screwing device according to the preamble of patent claim 1.

Der Raumunterteilung in Bauwerken dienen heutzutage Trennwände, die sich aus einem tragenden Blechrahmen und aus Gipskartonplatten zusammensetzen, die mit Hilfe von selbstschneidenden Schnellbauschrauben auf beiden Seiten des Blechrahmens befestigt werden. Diese eine scharfe Spitze aufweisenden Schnellbauschrauben haben den Vorteil, dass mit diesen direkt ein Loch in dem Blechrahmen erzeugt werden kann, in das ein Gewindeabschnitt der Schnellbauschrauben eingedreht wird. Inbesondere bei der Herstellung dieser Löcher mit herkömmlichen Schraubgeräten, ist vom Anwender eine hohe Anpresskraft auf das Schraubgerät auszuüben.Partitions in buildings are used today to separate rooms load-bearing sheet metal frame and composed of plasterboard, which with the help of self-tapping fast construction screws attached to both sides of the sheet metal frame become. These sharp-edged quick-assembly screws have the advantage that these can be used to create a hole in the sheet metal frame directly into the Threaded section of the drywall screws is screwed. Especially in the manufacture This hole with conventional screwdrivers is a high one by the user Apply contact pressure to the screwdriver.

Eine Reduktion dieser Anpresskraft wird beispielsweise mit pneumatisch betriebenen Schraubgeräten erreicht, wie es beispielsweise aus der DE-1 478 914 bekannt ist. Dieses pneumatisch betriebene Schraubgerät verfügt über eine Eindrehspindel, die gegen die Kraft einer Feder entgegen einer Eindrehrichtung gegenüber einem Gehäuse des Schraubgerätes versetzbar ist. Eine zwischen der Eindrehspindel und einer Hohlspindel angeordnete Kupplung sorgt für eine drehfeste Verbindung zwischen der Eindrehspindel und der, von einem Antriebsmotor antreibbaren, Hohlspindel, wenn das Schraubgerät mit einem entsprechenden Anpressdruck gegen den Untergrund gedrückt wird, so dass eine Versetzung der Eindrehspindel in Richtung Hohlspindel erfolgt.A reduction in this contact pressure is achieved, for example, with pneumatically operated ones Screwdrivers achieved, as is known for example from DE-1 478 914. This Pneumatically operated screwdriver has a screw-in spindle that counteracts the Force of a spring against a direction of rotation relative to a housing of the Screwdriver is displaceable. One between the screw-in spindle and a hollow spindle arranged coupling ensures a non-rotatable connection between the screw and the hollow spindle, which can be driven by a drive motor, if the screwing device is equipped with a corresponding contact pressure is pressed against the surface, so that a The insertion spindle is moved in the direction of the hollow spindle.

Bei der Befestigung einer Gipskartonplatte an einem Blechrahmen wird zunächst die Eindrehspindel über die Hohlspindel von dem Antriebsmotor angetrieben, so dass sich die Schnellbauschraube durch die Gipskartonplatte bohrt, bis die Spitze der Schnellbauschraube auf der Oberfläche des Blechrahmens zur Anlage gelangt. Anschliessend übt eine in Eindrehrichtung beschleunigbare Schlagmasse einen Schlag auf die Eindrehspindel und die mit der Eindrehspindel zusammenwirkende Schnellbauschraube aus. Dabei wird die Eindrehspindel in Eindrehrichtung beschleunigt und die Spitze der Schnellbauschraube erzeugt in dem Blechrahmen ein Loch, in das die Schnellbauschraube ein Stück weit eingetrieben wird. Da die drehschlüssige Verbindung zwischen der Eindrehspindel und der Hohlspindel bei der axialen Versetzung der Eindrehspindel unterbrochen wird, erfolgt eine reine axiale Versetzung der Schnellbauschraube ohne eine Verdrehung derselben. Das Gewinde der Schnellbauschraube weitet dabei das Loch in dem Blechrahmen so weit auf, dass ein restlicher Teil des Gewindes der Schnellbauschraube bei einem nachfolgenden Eindrehvorgang kein Aufnahmegewinde in der Wandung des Loches mehr schaffen kann, indem die Schnellbauschraube ausreichenden Halt findet.When fastening a plasterboard to a sheet metal frame, the screw is first driven by the drive motor via the hollow spindle, so that the Drywall screw drills through the plasterboard until the tip of the drywall screw comes to rest on the surface of the sheet metal frame. Then practice a striking mass that can be accelerated in the direction of rotation strikes the screw and the quick-build screw that interacts with the screw. The screw-in spindle is accelerated in the screw-in direction and the tip of the drywall screw creates a hole in the sheet metal frame into which the drywall screw Is driven far. Because the rotational connection between the screw and the hollow spindle is interrupted during the axial displacement of the screw-in spindle is a purely axial displacement of the drywall screw without twisting the same. The thread of the drywall screw widens the hole in the Sheet metal frame so far that a remaining part of the thread of the drywall screw in a subsequent screwing-in process, there is no receiving thread in the wall of the Hole can do more by the fast construction screw finds sufficient hold.

Die für den Betrieb dieses pneumatisch betriebenen Schraubgerätes notwendige Druckluft wird mit einem externen Kompressor erzeugt und beispielsweise in einem ebenfalls extern angeordneten Drucklufttank zur Verfügung gestellt. Die externe Anordnung des Kompressors bzw. des Drucklufttanks macht die Verwendung eines Druckluftschlauches notwendig, der das Handling des Schraubgerätes erheblich negativ beeinflusst.The compressed air required to operate this pneumatically operated screwdriver is generated with an external compressor and, for example, also in one externally arranged compressed air tank provided. The external arrangement of the Compressor or the compressed air tank makes the use of a compressed air hose necessary, which significantly affects the handling of the screwdriver.

Der Erfindung liegt die Aufgabe zugrunde, ein gut handhabbares Schraubgerät zu schaffen, mit dem man eine gute Verschraubungsqualität der Schnellbauschrauben in dem Blechrahmen bei erheblich reduzierter Anpresskraft für den Anwender erreicht. Es soll die Eindrehspindel von der Schlagmasse in Eindrehrichtung versetzbar sein, ohne dass die drehschlüssige Verbindung zwischen der Eindrehspindel und der Hohlspindel unterbrochen wird.The invention has for its object to a manageable screwdriver create with which you can get a good screwing quality of the fast construction screws in the sheet metal frame with significantly reduced contact pressure for the user. It the screw should be displaceable in the direction of rotation without impact that the rotational connection between the insertion spindle and the hollow spindle is interrupted.

Die Lösung dieser Aufgabe erfolgt durch ein Schraubgerät, welches die im kennzeichnenden Abschnitt des Patentanspruchs 1 angeführten Merkmale aufweist.This problem is solved by a screwdriver, which is characteristic of the Section of claim 1 features listed.

Die von einem Antriebsmotor ausgehende Drehbewegung wird bei dem erfindungsgemässen Schraubgerät über eine gegenüber dem Gehäuse axial begrenzt versetzbare und drehbar gelagerte Hohlspindel auf eine Eindrehspindel übertragen, die axial beweglich aber drehfest in der Hohlspindel geführt ist. Mit dieser axial versetzbaren Hohlspindel ist es möglich während eines Verschraubungsvorganges, bei dem sich die Eindrehspindel dreht, einen Schlag auf die Schlagfläche der Eindrehspindel abzugeben, ohne dass die drehfeste Verbindung zwischen der Hohlspindel und der Antriebswelle des Antriebsmotors unterbrochen wird.The rotary movement emanating from a drive motor is in the inventive Screwdriver via an axially limited displaceable relative to the housing and rotatably mounted hollow spindle transferred to a screw-in spindle, the axial is movable but rotatably guided in the hollow spindle. With this axially displaceable hollow spindle it is possible during a screwing process in which the screw turns to deliver a blow to the face of the screw, without the non-rotatable connection between the hollow spindle and the drive shaft of the Drive motor is interrupted.

Die Schnellbauschraube erzeugt dabei ein Loch in dem Blechrahmen und das Gewinde des Schnellbauschraube schneidet sich ein entsprechendes Aufnahmegewinde in der Wandung des Loches in dem Blechrahmen, in dem die Schnellbauschraube sicher festlegbar ist. The drywall screw creates a hole in the sheet metal frame and the thread of the drywall screw cuts a corresponding mounting thread in the Wall of the hole in the sheet metal frame in which the drywall screw is secure is definable.

Eine besonders sichere und drehfeste Verbindung zwischen der Hohlspindel und der Eindrehspindel erfolgt vorzugsweise mit wenigstens einem kugelförmigen Verriegelungselement, das in einer radialen Aufnahmebohrung der Hohlspindel angeordnet ist und in eine Längsnut der Eindrehspindel ragt.A particularly secure and non-rotatable connection between the hollow spindle and the screw-in spindle is preferably carried out with at least one spherical locking element, which is arranged in a radial receiving bore of the hollow spindle and in a longitudinal groove of the screw protrudes.

Eine automatische Versetzung der Hohlspindel von einer Arbeitsstellung in ihre eindrehrichtungsseitige Ausgangsstellung und eine Auflösung der drehfesten Verbindung zwischen der Hohlspindel und der Antriebswelle des Antriebsmotors wird vorzugsweise mit wenigstens einer Feder der Kupplung, beim Abheben des Schraubgerätes von der Gipskartonplatte, erreicht.An automatic transfer of the hollow spindle from a working position to its direction of rotation Starting position and a resolution of the non-rotatable connection between the hollow spindle and the drive shaft of the drive motor is preferred with at least one spring of the clutch when lifting the screwdriver from the Plasterboard, reached.

Eine besonders kompakte Bauweise, die sich insbesondere auf die Baulänge des Schraubgerätes positiv auswirkt, wird vorzugsweise dadurch erreicht, dass vorteilhafterweise die Hohlspindel die Kupplung sowie ein drehschlüssig mit der Antriebswelle des Antriebsmotors zusammenwirkendes Zahnrad durchsetzt.A particularly compact design, which particularly affects the overall length of the Screwdriver has a positive effect, is preferably achieved in that advantageously the hollow spindle, the coupling and a rotary connection with the drive shaft of the Interacting drive motor passes through gear.

Aus herstell- und montagetechnischen Gründen ist zweckmässigerweise die Hohlspindel mit einem ersten, eindrehrichtungsseitigen Kupplungsteil der Kupplung fest verbunden, das erste Kupplungsteil, gegen die Kraft einer Feder der Kupplung, entgegen der Eindrehrichtung zu einem gegenüber der Hohlspindel axial versetzbaren sowie frei drehbaren zweiten Kupplungsteil der Kupplung versetzbar und das zweite Kupplungsteil, gegen die Kraft einer zweiten Feder der Kupplung, entgegen der Eindrehrichtung zum Zahnrad des Getriebes versetzbar. Da sämtliche Teile der Kupplung und ein zum Getriebe zählendes Zahnrad im unmittelbaren Umgebungsbereich der Hohlspindel angeordnet sind, kann die Kupplung und das Zahnrad des Getriebes zusammen mit der Hohlspindel sowie der Eindrehspindel als Baueinheit vorgefertigt und bei der Montage des Schraubgerätes in einem Arbeitsgang in das Gehäuse eingesetzt werden.For manufacturing and assembly reasons, the hollow spindle is expedient firmly connected to a first coupling part of the coupling on the direction of rotation, the first coupling part, against the force of a spring of the coupling, against the direction of rotation to an axially displaceable and freely rotatable relative to the hollow spindle second clutch part of the clutch displaceable and the second clutch part against Force of a second spring of the clutch, against the direction of rotation to the gear of the Movable gear. Since all parts of the clutch and one of the gearbox The gear can be arranged in the immediate vicinity of the hollow spindle, the Coupling and the gear wheel of the gearbox together with the hollow spindle and the screw-in spindle Prefabricated as a unit and when assembling the screwdriver in one Operation can be inserted into the housing.

Vorzugsweise ist die mit der Eindrehspindel zusammenwirkende Schlagmasse von einem Elektromagneten in Eindrehrichtung beschleunigbar. Mit Hilfe des Elektromagneten lassen sich gleichmässig starke Schläge erzeugen, die sich insbesondere auf die Verschraubungsqualität der Schnellbauschrauben positiv auswirken.The impact mass interacting with the screw-in spindle is preferably one Electromagnets can be accelerated in the direction of rotation. With the help of the electromagnet uniformly strong impacts can be generated, which affect the screw quality in particular of the fast construction screws have a positive effect.

Die Schlagmasse ist beispielsweise aus wenigstens zwei koaxial zueinander angeordneten Einzelschlagmassen gebildet, wobei eine eindrehrichtungsseitige, erste Einzelschlagmasse aus einem nichtmagnetisierbaren Material und eine zweite Einzelschlagmasse aus einem magnetisierbaren Material gebildet ist. Die magnetisierbare Einzelschlagmasse ist dabei nicht dauermagnetisiert, sondern wird nur magnetisiert solange die Spule eines Magneten unter Spannung steht. Die Schlagmasse kann aber beispielsweise auch ein, innerhalb eines Zylinders geführter Kolben sein, der mit Druckluft gegen die Kraft einer Rückstellfeder in Arbeitsrichtung versetzbar ist. Es ist aber auch möglich die Schlagmasse - den Kolben - entgegen der Eindrehrichtung mit Hilfe der Druckluft zu versetzen. Dabei wird eine Feder vorgespannt, die die Beschleunigung der Schlagmasse zum gewünschten Zeitpunkt übernimmt. Die Versetzung des Kolbens entgegen der Eindrehrichtung erfolgt beispielsweise mit Druckluft.The impact mass is, for example, made up of at least two coaxially arranged to each other Single impact masses formed, with a first individual impact mass on the direction of rotation made of a non-magnetizable material and a second single impact mass is formed from a magnetizable material. The magnetizable single impact mass is not permanently magnetized, but is only magnetized as long the coil of a magnet is under tension. The impact mass can, for example also be a piston that is guided within a cylinder and can be counteracted with compressed air the force of a return spring can be moved in the working direction. But it is also possible the impact mass - the piston - against the direction of rotation with the help of compressed air offset. A spring is biased to accelerate the impact mass takes over at the desired time. The displacement of the piston against the direction of rotation for example with compressed air.

Damit der Anwender nicht auf das Vorhandensein externer Druckluftquellen angewiesen ist, ist die Druckluft beispielsweise mit einem Kompressor erzeugbar, der mit dem Gehäuse des Schraubgerätes in Verbindung steht. Antreibbar ist dieser Kompressor beispielsweise mit dem elektrischen Antriebsmotor des Schraubgerätes. Das bedeutet, dass der Kompressor, die notwendigen Ventile und gegebenenfalls ein Druckluftspeicher direkt an dem Gehäuse des Schraubgerätes angebaut oder in dem Gehäuse eingebaut sind. Die Schlagenergie ist beispielsweise durch Einstellung des Betriebsdruckes dosierbar.So that the user does not have to rely on the presence of external compressed air sources is, the compressed air can be generated for example with a compressor that with the housing of the screwdriver is connected. This compressor can be driven, for example with the electric drive motor of the screwdriver. It means that the compressor, the necessary valves and, if necessary, a compressed air reservoir directly are attached to the housing of the screwdriver or installed in the housing. The impact energy can be metered, for example, by adjusting the operating pressure.

Vorzugsweise kann die Versetzung der Schlagmasse mit Hilfe einer mit der Schnellbauschraube bzw. der Eindrehspindel und einem stromleitenden Untergrund in Verbindung stehenden Elektronik erfolgen, die beim Berühren der Schraube des Untergrundes ein entsprechendes Auslösesignal an den Elektromagneten abgibt. Die Elektronik steht dabei beispielsweise mit dem, den Untergrund bildenden Blechrahmen und mit der Schnellbauschraube bzw. der Eindrehspindel in elektrischer Verbindung. Mit Hilfe einer Kapazitätsvergleichsmessung, die mit der Elektronik erfolgt, lässt sich das entsprechende Auslösesignal erzeugen.The impact mass can preferably be displaced with the aid of a fast-erecting screw or the screw-in spindle and a conductive surface standing electronics take place when touching the screw of the surface emits a corresponding trigger signal to the electromagnet. The electronics are there for example with the sheet metal frame forming the subsurface and with the drywall screw or the screw-in spindle in electrical connection. With the help of a capacity comparison measurement, which occurs with the electronics, the corresponding trigger signal can be produce.

Eine automatische Beschleunigung der Schlagmasse in Eindrehrichtung kann beispielsweise auch dadurch erreicht werden, indem die Geschwindigkeit des Bohrfortschritts der Schnellbauschraube durch den Gipskarton bzw. den Blechrahmen überwacht wird. Diese Überwachung kann beispielsweise mit einem, als Messaufnehmer dienenden, elektrischen Potentiometer erfolgen, das an einen beweglichen Tiefenanschlag gekoppelt ist. Wenn sich der Bohrfortschritt beim Auftreffen der Schnellbauschraube auf dem Blechrahmen verlangsamt, ändert sich ein bestimmter Strom- oder Spannungsverlauf, der sich beim Durchbohren der Gipskartonplatte ergibt. Diese Änderung kann von einer Auswerteelektronik detektiert werden und das Signal für das Auslösen des Schlages bilden. An automatic acceleration of the impact mass in the direction of rotation can, for example can also be achieved by the speed of the drilling progress Drywall screw is monitored by the plasterboard or the sheet metal frame. This Monitoring can be carried out, for example, with a measuring sensor electrical potentiometer, which is coupled to a movable depth stop is. If the drilling progress when hitting the drywall screw on the Sheet metal frame slows down, a certain current or voltage curve changes that arises when drilling through the plasterboard. This change can be made by an evaluation electronics be detected and form the signal for triggering the blow.

Die Erfindung wird anhand einer Zeichnung, welche ein teilweise im Längsschnitt dargestelltes Ausführungsbeispiel wiedergibt, näher erläutert.The invention is based on a drawing, which is a partially shown in longitudinal section Illustrates embodiment, explained in more detail.

Das erfindungsgemässe Schraubgerät weist ein nicht vollständig dargestelltes Gehäuse 1, einen elektrischen Antriebsmotor 2, eine im Gehäuse 1 drehbar gelagerte Hohlspindel 3, ein Getriebe 24 sowie eine mit der Hohlspindel 3 zusammenwirkende Kupplung 6 auf. Die Hohlspindel 3 dient der axial beweglichen aber drehfesten Aufnahme einer Eindrehspindel 5, die im eindrehrichtungsseitigen Endbereich mit einer Werkzeugaufnahme 4 versehen ist. In der Werkzeugaufnahme 4 ist ein Schrauberbit 18, eingesetzt, der auf einen Kopf einer einzudrehenden Schnellbauschraube 22 abgestimmte Drehmitnahmeflächen aufweist. Ein entgegen der Eindrehrichtung weisender Endbereich der Eindrehspindel 5 besitzt eine abgerundete Schlagfläche. Der drehfesten Anordnung der Eindrehspindel 5 in der Hohlspindel 3 dienen kugelförmige Verriegelungselemente 13, die in radialen Aufnahmebohrungen 14 der Hohlspindel 3 gelagert sind und in entsprechende Längsnuten 12 der Eindrehspindel 5 ragen. Die Antriebswelle 19 des Antriebsmotors 2 erstreckt sich im wesentlichen senkrecht zur Eindrehrichtung. Das Getriebe 24 besitzt eine Kegelverzahnung.The screwing device according to the invention has a housing which is not shown completely 1, an electric drive motor 2, a hollow spindle rotatably mounted in the housing 1 3, a gear 24 and a coupling 6 which interacts with the hollow spindle 3. The hollow spindle 3 serves for the axially movable but non-rotatable reception of a screw-in spindle 5, in the end region on the direction of rotation with a tool holder 4 is provided. In the tool holder 4 a screwdriver bit 18 is used, which is on a head of a screwdriver screw 22 matched rotary driving surfaces having. An end area of the screw that points against the direction of screwing 5 has a rounded face. The non-rotatable arrangement of the screw 5 in the hollow spindle 3 serve spherical locking elements 13 which in radial receiving bores 14 of the hollow spindle 3 are mounted and in corresponding Longitudinal grooves 12 of the screw 5 protrude. The drive shaft 19 of the drive motor 2 extends essentially perpendicular to the direction of rotation. The transmission 24 has a bevel gear.

Das dargestellte Schraubgerät dient der Befestigung von Gipskartonplatten 20 an Blechrahmen 21 mit Hilfe von Schnellbauschrauben 22, die durch die Gipskartonplatte 20 hindurch in den Blechrahmen 21 eingedreht werden. Die Darstellung zeigt eine in die Gipskartonplatte 20 eingedrehte Schnellbauschraube 22. Die Hohlspindel 3 und die Kupplung 6 sind in ausgekuppelter Stellung gezeichnet. Die Übertragung einer vom Antriebsmotor 2 ausgehenden Drehbewegung auf die Eindrehspindel 5 ist unterbrochen.The screwing device shown is used to fasten plasterboard 20 Sheet metal frame 21 with the help of drywall screws 22, through the plasterboard 20th can be screwed into the sheet metal frame 21. The illustration shows one in the Plasterboard 20 screwed drywall screw 22. The hollow spindle 3 and Coupling 6 are drawn in the disengaged position. The transmission of one from Drive motor 2 outgoing rotary movement on the screw 5 is interrupted.

Die in dem Antriebsstrang zwischen dem Antriebsmotor 2 und der Hohlspindel 3 angeordnete Kupplung 6 weist ein eindrehrichtungsseitiges, erstes Kupplungsteil 7 auf, das mit der Hohlspindel 3 fest verbunden ist. Gegen die Kraft einer ersten Feder 9, ist dieses erste Kupplungsteil 7 entgegen der Eindrehrichtung zu einem gegenüber der Hohlspindel 3 axial versetzbaren sowie frei drehbaren zweiten Kupplungsteil 8 versetzbar. Das zweite Kupplungsteil 8 ist gegen die Kraft einer zweiten Feder 10, entgegen der Eindrehrichtung zu einem Zahnrad 11 des Getriebes 24 versetzbar, das ebenfalls von der Hohlspindel 3 durchsetzt ist und in drehschlüssiger Verbindung mit der Antriebswelle 19 des Antriebsmotors 2 steht.The one arranged in the drive train between the drive motor 2 and the hollow spindle 3 Coupling 6 has a first coupling part 7 on the direction of rotation, which with the hollow spindle 3 is firmly connected. Against the force of a first spring 9, this is first coupling part 7 against the direction of rotation with respect to the hollow spindle 3 axially displaceable and freely rotatable second coupling part 8 displaceable. The second Coupling part 8 is against the force of a second spring 10, against the direction of rotation to a gear 11 of the gear 24 displaceable, which is also from the hollow spindle 3rd is penetrated and in a rotationally locked connection with the drive shaft 19 of the drive motor 2 stands.

Koaxial hinter der Hohlspindel 3 befindet sich die Spule eines Elektromagneten 17 und eine in der Spule angeordnete, parallel zur Eindrehrichtung versetzbare Schlagmasse 15 mit einem gehärteten Einsatz 16. Bei dem, mit der abgerundeten Schlagfläche der Eindrehspindel 5 zusammenwirkenden, gehärteten Einsatz handelt es sich beispielsweise um einen handelsüblichen, gehärteten Zylinderstift, über den die Stossenergie der gesamten Schlagmasse 15 auf die Eindrehspindel 5 übertragen wird.The coil of an electromagnet 17 and is located coaxially behind the hollow spindle 3 an impact mass 15 arranged in the coil and displaceable parallel to the direction of insertion with a hardened insert 16. The one with the rounded face of the screw 5 interacting, hardened insert, for example a commercially available, hardened cylinder pin, over which the impact energy of the entire impact mass 15 is transferred to the screw 5.

In der gezeigten Darstellung wird die Schlagmasse 15 durch eine Rückholfeder 23 in einer Ausgangsstellung gehalten, in der ein magnetisierbarer Teil der Schlagmasse 15 zum grössten Teil ausserhalb der Spule des Elektromagneten 17 angeordnet ist.In the illustration shown, the impact mass 15 is returned by a return spring 23 in held in a starting position in which a magnetizable part of the impact mass 15 for the most part is arranged outside the coil of the electromagnet 17.

Die Länge der Eindrehspindel 5 ist so bemessen, dass nur dann ein Schlag auf deren Schlagfläche erfolgen kann, wenn die Kupplung 6 durch axiales Verschieben der Hohlspindel 3 entgegen der Eindrehrichtung eingerückt ist. Dadurch ist ohne zusätzliche Bauteile die Funktion einer Anpressicherung gewährleistet. Ein Leerschlag der Schlagmasse 15 wird durch einen entsprechenden Anschlag 25 in einer Halterung der Spule aufgefangen. Die Spule des Elektromagneten 17 ist beispielsweise durch eine nicht dargestellte Elektronikschaltung ansteuerbar. Diese ist so ausgeführt, dass sie auf das Signal eines ebenfalls nicht dargestellten Sensors zur Blechrahmenerkennung hin die Spule des Elektromagneten 17 für einen definierten Zeitraum mit einer definierten Spannung versorgt. Durch die dadurch entstehende Magnetkraft wird die magnetisierbare Schlagmasse 15 gegen die Kraft der Rückholfeder 23 in Eindrehrichtung beschleunigt.The length of the screw 5 is dimensioned so that only then a blow to it Striking surface can take place when the clutch 6 by axially moving the hollow spindle 3 is engaged against the direction of rotation. This means there are no additional components ensures the function of a pressure lock. An empty stroke of the batter 15 is caught by a corresponding stop 25 in a holder of the coil. The coil of the electromagnet 17 is, for example, by a not shown Electronic circuit can be controlled. This is designed so that it responds to the signal of a also not shown sensor for sheet metal frame detection out the coil of Electromagnets 17 are supplied with a defined voltage for a defined period of time. The resulting magnetic force makes the magnetizable impact mass 15 accelerated against the force of the return spring 23 in the direction of rotation.

Ist die Kupplung 6 in diesem Moment eingerückt, trifft die Schlagmasse 15 hinter der Hohlspindel 3 auf die Eindrehspindel 5 und kann ihre kinetische Energie in Form eines elastischen Stosses auf die Eindrehspindel 5 und damit auf den Schrauberbit 18 und die zu versetzende Schnellbauschraube 22 übertragen. Nach erfolgtem Schlag wird die Schlagmasse 15 von der Rückholfeder 23 wieder in ihre Ausgangsstellung bewegt. Nachdem die Spitze der Schnellbauschraube 22 wie beschrieben durch die Wand des Blechrahmens 21 getrieben wurde, läuft der eingeleitete Verschraubungsvorgang zu Ende ab, bis die Kupplung 6 ausrückt.If the clutch 6 is engaged at this moment, the impact mass 15 hits behind the Hollow spindle 3 on the screw 5 and their kinetic energy in the form of a elastic impact on the screw 5 and thus on the screwdriver bit 18 and Transfer the quick-assembly screw 22 to be moved. After the blow, the Impact mass 15 moved back to its starting position by the return spring 23. After the tip of the drywall screw 22 as described by the wall of the Sheet metal frame 21 was driven, the initiated screwing process ends until the clutch 6 disengages.

Die Schlagauslösung kann beispielsweise automatisch infolge Ansprechen einer schematisch dargestellten Sensorelektronik 26, die den Kontakt der Schnellbauschraubenspitze mit der Oberfläche des Blechrahmens 21 detektiert, erfolgen. Dazu muss die Sensorelektronik 26 bei eingerückter Kupplung mit der Eindrehspindel, der Oberfläche des Blechrahmens 21 und dem Elektromangnet 17 leitend verbunden sein. Die Verbindungsleitungen sind strichliert dargestellt. Die Eindrehspindel ist hier beispielsweise mittels Lagerbuchsen aus Kunststoff und nichtleitenden Keramikkugeln zur Drehmomentübertragung elektrisch isoliert eingebaut, um störende Einflüsse auszuschalten.The strike trigger can, for example, automatically as a result of a response schematically illustrated sensor electronics 26, the contact of the Drywall screw tip detected with the surface of the sheet metal frame 21, take place. For this purpose, the sensor electronics 26 with the coupling engaged with the screw-in spindle Surface of the sheet metal frame 21 and the Elektromangnet 17 be conductively connected. The connecting lines are shown in dashed lines. The screw is here For example, using plastic bushings and non-conductive ceramic balls Torque transmission installed electrically insulated to avoid disruptive influences off.

Diese elektrische Kontaktierung erfolgt hier durch den Anschluss an eine leitende Lagerbuchse. Das abgesetzte Ende der Eindrehspindel sorgt bei ausgerückter Kupplung für einen elektrisch trennenden Spalt zwischen Buchse und Werkzeughalter. Erst die Axialbewegung beim Eindrücken der Kupplung schliesst den Kontakt und vermeidet zusätzliche Fehlauslösungen und Leerschläge.This electrical contact is made here by connecting to a conductive bearing bush. The stepped end of the screw-in spindle provides for when the clutch is disengaged an electrically separating gap between the socket and the tool holder. First the axial movement when the clutch is pressed in, the contact closes and avoids additional ones False triggers and blanks.

Bei der hier beispielsweise verwendbaren Sensorelektronik handelt es sich um eine Kapazitätsvergleichsmessung des Systems Eindrehspindel, Schrauberbit, Selbstbohrschraube ohne und mit dem Blechrahmen.The sensor electronics that can be used here, for example, are Capacity comparison measurement of the system screw-in spindle, screwdriver bit, self-drilling screw without and with the sheet metal frame.

Claims (8)

Schraubgerät mit einem Gehäuse (1), einem Antriebsmotor (2), einer im Gehäuse (1) drehbar gelagerten Hohlspindel (3), einer wenigstens teilweise in die Hohlspindel (3) ragenden, gegenüber der Hohlspindel (3) axial begrenzt versetzbaren Eindrehspindel (5), die von einer in dem Gehäuse (1) axial begrenzt versetzbar angeordneten Schlagmasse (15) in Eindrehrichtung versetzbar ist und einer, eine Drehbewegung von einer Antriebswelle (19) des Antriebsmotors (2) auf die Eindrehspindel (5) übertragbaren Kupplung (6), dadurch gekennzeichnet, dass die Hohlspindel (3) gegenüber dem Gehäuse (1) axial begrenzt versetzbar ist sowie drehfest mit der Eindrehspindel (5) in Verbindung steht und dass die Kupplung (6) zwischen der Hohlspindel (3) und der Antriebswelle (19) des Antriebsmotors (2) angeordnet ist.Screwing device with a housing (1), a drive motor (2), a hollow spindle (3) rotatably mounted in the housing (1), a screw-in spindle (5) that projects at least partially into the hollow spindle (3) and can be axially displaced relative to the hollow spindle (3) ), which can be displaced in the direction of rotation by an impact mass (15) which can be displaced axially to a limited extent in the housing (1), and a coupling (6) which can transmit a rotary movement from a drive shaft (19) of the drive motor (2) to the screw-in spindle (5) , characterized in that the hollow spindle (3) can be displaced axially to a limited extent with respect to the housing (1) and is connected in a rotationally fixed manner to the screw-in spindle (5) and in that the coupling (6) between the hollow spindle (3) and the drive shaft (19) of the drive motor (2) is arranged. Schraubgerät nach Anspruch 1, dadurch gekennzeichnet, dass die drehfeste Verbindung zwischen der Hohlspindel (3) und der Eindrehspindel (5) mit wenigstens einem kugelförmigen Verriegelungselement (13) erfolgt, das in einer radialen Aufnahmebohrung (14) der Hohlspindel (3) angeordnet ist und in eine Längsnut (12) der Eindrehspindel (5) ragt.Screwing device according to claim 1, characterized in that the rotationally fixed connection between the hollow spindle (3) and the screw-in spindle (5) is carried out with at least one spherical locking element (13) which is arranged in a radial receiving bore (14) of the hollow spindle (3) and protrudes into a longitudinal groove (12) of the screw-in spindle (5). Schraubgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hohlspindel (3) entgegen der Eindrehrichtung gegen die Kraft wenigstens einer Feder (9, 10) der Kupplung (6) in eine Arbeitsstellung versetzbar ist, in der die Hohlspindel (3) drehfest mit der Antriebswelle (19) des Antriebsmotors (2) in Verbindung steht.Screwing device according to claim 1 or 2, characterized in that the hollow spindle (3) can be set against the direction of rotation against the force of at least one spring (9, 10) of the coupling (6) into a working position in which the hollow spindle (3) rotates with it the drive shaft (19) of the drive motor (2) is connected. Schraubgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Hohlspindel (3) die Kupplung (6) durchsetzt.Screwing device according to one of claims 1 to 3, characterized in that the hollow spindle (3) passes through the coupling (6). Schraubgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Hohlspindel (3) ein drehschlüssig mit der Antriebswelle (19) des Antriebsmotors (2) zusammenwirkendes Zahnrad (11) des Getriebes (24) durchsetzt. Screwing device according to one of claims 1 to 4, characterized in that the hollow spindle (3) passes through a gearwheel (11) of the transmission (24) which cooperates with the drive shaft (19) of the drive motor (2) in a rotationally locking manner. Schraubgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Hohlspindel (3) mit einem eindrehrichtungsseitigen, ersten Kupplungsteil (7) der Kupplung (6) fest verbunden ist, dass das erste Kupplungsteil (7), gegen die Kraft einer ersten Feder (9), entgegen der Eindrehrichtung zu einem gegenüber der Hohlspindel (3) axial versetzbaren sowie frei drehbaren zweiten Kupplungsteil (8) der Kupplung (6) versetzbar ist und dass das zweite Kupplungsteil (8), gegen die Kraft einer zweiten Feder (10) der Kupplung (6), entgegen der Eindrehrichtung zum Zahnrad (11) des Getriebes (24) versetzbar ist.Screwing device according to one of claims 1 to 5, characterized in that the hollow spindle (3) is firmly connected to a first coupling part (7) of the coupling (6) on the direction of rotation, that the first coupling part (7), against the force of a first spring (9), counter to the direction of rotation to a second coupling part (8) of the coupling (6) which is axially displaceable and freely rotatable relative to the hollow spindle (3) and that the second coupling part (8) against the force of a second spring (10) the coupling (6) can be displaced counter to the direction of rotation relative to the gearwheel (11) of the transmission (24). Schraubgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die mit der Eindrehspindel (5) zusammenwirkende Schlagmasse (15) von einem Elektromagneten (17) in Eindrehrichtung beschleunigbar ist.Screwing device according to one of claims 1 to 6, characterized in that the impact mass (15) cooperating with the screw-in spindle (5) can be accelerated in the screw-in direction by an electromagnet (17). Schraubgerät nach Anspruch 7, dadurch gekennzeichnet, dass die Versetzung der Schlagmasse (15) mit Hilfe einer mit der Schnellbauschraube (22) bzw. der Eindrehspindel (5) und einem stromleitenden Untergrund in Verbindung stehenden Elektronik erfolgt, die beim Berühren der Schraube des Untergrundes ein entsprechendes Auslösesignal an den Elektromagneten (17) abgibt.Screwing device according to claim 7, characterized in that the displacement of the impact mass (15) is carried out with the aid of electronics which are connected to the quick-assembly screw (22) or the screw-in spindle (5) and an electrically conductive base and which are activated when the screw touches the base emits a corresponding trigger signal to the electromagnet (17).
EP01810620A 2000-07-06 2001-06-26 Fastening tool Expired - Lifetime EP1170093B1 (en)

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DE1478914A1 (en) * 1964-07-08 1969-11-20 Gkn Screws Fasteners Ltd Tool for inserting self-piercing and self-threading screws into a tool
GB1187585A (en) * 1966-08-17 1970-04-08 Gkn Screws Fasteners Ltd New or improved Tool for Driving Fasteners and the like with Impact and/or Rotary Motion
US3550243A (en) * 1967-06-23 1970-12-29 Robert Trevor Allsop Method and tool for driving self-tapping screws
US3584695A (en) * 1969-02-18 1971-06-15 Gkn Screws Fasteners Ltd Power tools
US4370906A (en) * 1980-05-05 1983-02-01 Resonant Technology Company Sequenced fastener installation system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008085465A2 (en) 2006-12-29 2008-07-17 Illinois Tool Works Inc. Cordless fastener tool with fastener driving and rotating functions
EP2104593A2 (en) * 2006-12-29 2009-09-30 Illinois Tool Works Inc. Cordless fastener tool with fastener driving and rotating functions
EP2104593A4 (en) * 2006-12-29 2011-06-29 Illinois Tool Works Cordless fastener tool with fastener driving and rotating functions
WO2014049035A1 (en) * 2012-09-28 2014-04-03 Gustav Klauke Gmbh Portable tool, portable expanding apparatus, hydraulic piston/cylinder arrangement and method for operating a portable tool
CN104797357A (en) * 2012-09-28 2015-07-22 古斯塔夫.克劳克有限责任公司 Portable tool, portable expanding apparatus, hydraulic piston/cylinder arrangement and method for operating a portable tool
AU2013322656B2 (en) * 2012-09-28 2017-02-16 Gustav Klauke Gmbh Portable tool, portable expanding apparatus, hydraulic piston/cylinder arrangement and method for operating a portable tool
CN104797357B (en) * 2012-09-28 2017-08-04 古斯塔夫.克劳克有限责任公司 Hand-held process equipment, hand-held expansion device, hydraulic piston/hydraulic cylinder device and the method for running hand-held process equipment
US10406586B2 (en) 2012-09-28 2019-09-10 Gustav Klauke Gmbh Portable tool and method of operating same
WO2020160782A1 (en) * 2019-02-08 2020-08-13 KYOCERA UNIMERCO Fastening A/S Screw fastener and fastening kit for fastening a panel and method for fastening a panel

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TW495420B (en) 2002-07-21
KR100719822B1 (en) 2007-05-18
US6526852B2 (en) 2003-03-04
EP1170093A3 (en) 2002-11-27
DE50114752D1 (en) 2009-04-23
US20020002883A1 (en) 2002-01-10
JP4785279B2 (en) 2011-10-05
ATE424971T1 (en) 2009-03-15
MXPA01006629A (en) 2002-10-23
KR20020005412A (en) 2002-01-17
JP2002059372A (en) 2002-02-26
EP1170093B1 (en) 2009-03-11
DE10032949A1 (en) 2002-01-17
ES2320411T3 (en) 2009-05-22

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