EP3122516B1 - Pyrotechnic insertion device - Google Patents

Pyrotechnic insertion device Download PDF

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Publication number
EP3122516B1
EP3122516B1 EP15712125.2A EP15712125A EP3122516B1 EP 3122516 B1 EP3122516 B1 EP 3122516B1 EP 15712125 A EP15712125 A EP 15712125A EP 3122516 B1 EP3122516 B1 EP 3122516B1
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EP
European Patent Office
Prior art keywords
piston
driving device
link
central axis
operating part
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EP15712125.2A
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German (de)
French (fr)
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EP3122516A1 (en
Inventor
Harald Fielitz
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Hilti AG
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Hilti AG
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Publication of EP3122516A1 publication Critical patent/EP3122516A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
    • B25C1/143—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil trigger operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil

Definitions

  • the invention relates to a tacker according to the preamble of claim 1.
  • Hand-held driving devices with propellant charge are known from the prior art, in which after ignition of a pyrotechnic charge, the resulting fuel gases expand in a combustion chamber. As a result, a piston is accelerated as energy transfer means and drives a fastener into a workpiece.
  • a known pyrotechnic tacker is sold under the designation DX 36 by Hilti Corporation, Schaan, Liechtenstein.
  • the driving force of a fastener can be reduced if necessary by controlled presentation of the starting position of the piston in a combustion chamber.
  • a setting wheel is provided on the device, which is laterally offset from a central axis of the piston in a respect to the driving direction rear portion of the device.
  • the DX 36 is a type of driver without automatic piston return.
  • the piston is moved after a driving operation by a manual Repetieriolo in a start position.
  • a piston guide is pushed forward in the driving direction, with a housing-fixed stop limiting the movement of the piston in the same direction. This results in a relative movement of the piston with respect to the piston guide to the rear against the setting direction.
  • the piston is thus spent by the first part of the repeating movement in a rear position in the piston guide, which corresponds to a start position with maximum driving energy.
  • the piston guide is pushed together with the piston in the opposite direction to the rear until the piston guide reaches a defined rear stop.
  • the piston and the piston guide are now first jointly further pushed back until the piston meets an adjustable stop by means of the adjusting wheel.
  • the piston thus stops and the piston guide is pushed further backwards on its own.
  • the associated relative movement between the piston and the piston guide finally causes the above-mentioned idea of the starting position of the piston in the combustion chamber.
  • Other tackers are also out DE 2548014 A1 such as De 2447767 A1 named.
  • Such a design of axially different stop positions also has the advantage that it allows a linear or otherwise desired control scale of the drive energy, even if the relationship between the starting position and Eincombergie the piston is highly nonlinear.
  • the backdrop is arranged on a piston member surrounding the piston guide.
  • a sleeve member lends itself to a simple mechanical realization, which takes up little space.
  • an axial distance between the gate and a control panel for adjusting the scenery can thereby be bridged.
  • a sliding link is understood to be a component in which an axially oriented surface is provided whose axial position differs depending on a position perpendicular to the axial direction. These can be steps, continuous ramps or even a combination of steps and ramps act. At least some of the axially different positions are provided as defined stop positions for adjusting the piston member.
  • a central axis in the sense of the invention is an axis at least parallel to the movement of the fastening element.
  • the central axis also passes through a center of the fastener and the piston member.
  • a driving energy is understood to mean the kinetic energy of a given fastening means for a given propellant charge. Given these boundary conditions, it is possible by the actuator to adjust the resulting driving energy of the fastener adjustable.
  • a piston member according to the invention is any means which is acted upon by the ignition of the charge with kinetic energy, wherein the kinetic energy is ultimately transferred to the fastening means.
  • the piston member is designed as a particular cylindrical piston.
  • recesses or other structures may be provided which further promote turbulence and uniform expansion of the fuel gases.
  • a radially projecting, preferably pin-shaped projection is arranged on the piston member, in particular on a piston head of the piston member, which comprises a counter-stop for the slide.
  • any retractable anchoring such as nail, bolt or screw understood.
  • the link is pivotable about the central axis, whereby a simple and space-saving change in the stop position can be achieved.
  • the actuator has a pivotable about the central axis control panel. Due to the pivotability of the control panel about the central axis is a simple adjustment at the same time effective visual control of the set value achievable. Such an arrangement also allows easy adjustment even under unfavorable conditions such as wearing work gloves.
  • the control panel may be any suitable means for manual adjustment, such as a rotatable sleeve, a pivotable knob, or the like.
  • a pivoting of the operating part about the central axis means a substantially perpendicular to the axis oriented deflection of the control panel from a previous position.
  • a movement line or trajectory of the operating part has a radius of curvature, which is preferably not smaller than a distance of the operating part from the central axis.
  • the pivoting is a rotation about the central axis.
  • control panel is coupled via a mechanical positive control with the backdrop.
  • control panel and the scenery on the positive control are axially mutually displaceable and rotatably connected to each other. This allows in particular an axial change of the position of the slide relative to the housing in the course of adjusting the piston position.
  • the operating part is designed as an annular sleeve, wherein the sleeve surrounds the central axis.
  • the sleeve can be rotated in several different positions, wherein at least two different positions are assigned to two different driving forces.
  • An inventive control panel and in particular a sleeve described above can be arranged to optimize the ergonomics of the device in a front area in front of a handle of the device. This can result in arrangement and design of the control panel an advantageous analogy to known controls of hand-held drills and / or cordless screwdrivers.
  • the controls of such devices are used according to other purposes, such as a torque adjustment or a change from screwing to hammer operation in a percussion drill.
  • the piston guide is axially displaced relative to the link in the course of a pressing movement of the tacker. This allows a space-saving and effective change in the starting position of the piston member.
  • a front part of the device is pushed by a certain stroke in the Anpressvorgang before triggering the Eintreibilless, whereby the corresponding relative movements of the piston guide, piston member and backdrop are effected.
  • the setting of the starting position of the piston member can also take place in the course of a repeating movement of the after a driving operation.
  • a simple and effective implementation of the invention provides that the piston member has a stop by means of which the piston member abuts in the course of setting its starting position directly to one of the stop positions of the gate. As a result, the number of components is kept small.
  • a drive-in device comprises a hand-guided housing 1, in which a piston member in the form of a piston 2 is accommodated.
  • a rear surface of the piston 2 defines a combustion chamber 3 in which the combustion gases of a pyrotechnic charge expand to accelerate the piston 2.
  • the charge is presently received in a cartridge made of sheet metal.
  • the cartridge has an impact fuze and is inserted into a cartridge bearing 4 before ignition via a corresponding loading mechanism.
  • the cartouche and the cartridge warehouse 4 are formed rotationally symmetrical about a central axis A.
  • the central axis A is in the present examples at the same time a central axis of the combustion chamber 3 and the piston member. 2
  • the combustion chamber 3 with the cartridge bearing 4 is part of a piston guide 5.
  • the piston guide 5 is formed as a linearly displaceable in the housing 1 of the tacker along the axis component.
  • the piston member 2 is in turn displaceable in the piston guide 5 linearly along the central axis A.
  • the Koben adjustment is formed in its front portion substantially as a hollow cylindrical element, wherein from one end of the region of the combustion chamber 3, a slit 6 is provided in the wall of the piston guide 5.
  • a front part 8 is connected to the piston guide 5.
  • a receptacle 7 for the fastening means is arranged in the front part 8.
  • the front part 8 is placed in the course of a driving operation on the workpiece and counter to a spring force by a stroke H (see Fig. 3 ) inserted.
  • the piston guide 5 is pressed with the cartridge bearing 4 to the rear against a trigger mechanism 9, so that the cartridge can be ignited.
  • the piston member 2 comprises a stop in the form of a laterally projecting pin 2a, which runs in the slot 6 of the piston guide 5.
  • the pin 2a protrudes beyond the outer wall of the piston guide 5 and can abut on one of a plurality of stop positions 10 a of a link 10.
  • a piston position in the piston guide 5 is set at the ignition time of the charge.
  • a rearmost position of the piston member corresponds to a maximum driving energy.
  • An introduced position corresponds to a reduced driving energy.
  • Fig. 5 (applied states) can be seen that the piston member 2 is initially arranged in the rearmost position in the piston guide 5 after a Repetierterrorism / piston return. Only over the stroke H of placement, the piston guide 5 is moved further to the rear, the piston member 2 remains from a direct stop of the pin 2a on the link 10 in the axial position.
  • the gate 10 is formed on a rear portion of a sleeve member 11 and has the shape of a circumferentially curved about the central axis stairs.
  • the individual stages or stop positions 10a are not uniformly high in the axial direction, but adapted for linearization of a setting scale of the driving energy.
  • the sleeve member 11 surrounds the piston guide 5 and can be both rotated and axially displaced with respect to this. In a front region, the sleeve member has two axially extending slots 11a which are formed to interlock with sliding blocks 12a of a control panel.
  • the control unit 12 is presently designed as a rotatable annular sleeve which is arranged substantially concentrically around the central axis A in a front region of the housing 1 of the tacker.
  • the control unit is fixed in the axial direction on the housing has a scale that indicates its position in the direction of rotation.
  • the sleeve member 11 is rotatably connected to the gate 10 via the sliding into the slots 11a sliding blocks 12a, but axially displaceable with the control panel 12.
  • the sliding blocks 12a and the slits 11a correspondingly form a positive control for the connection of the operating part 12 and the gate 10.
  • the sleeve member 11 and the control panel 12 is an actuator for adjusting the driving energy of the device.
  • the desired driving energy is set as the energy level marked on the operating part by turning the sleeve 12. This leads via the positive control described above to a selected positioning of the link in the circumferential direction relative to the pin 2a of the piston member. 2
  • the inventive design of a piston presentation by means of an adjustable link is not limited to the embodiment described above.

Description

Die Erfindung betrifft ein Eintreibgerät nach dem Oberbegriff des Anspruchs 1.The invention relates to a tacker according to the preamble of claim 1.

Aus dem Stand der Technik sind handgeführte Eintreibgeräte mit Treibladungen bekannt, bei denen nach der Zündung einer pyrotechnischen Ladung die resultierenden Brenngase in einer Brennkammer expandieren. Hierdurch wird ein Kolben als Energieübertragungsmittel beschleunigt und treibt ein Befestigungsmittel in ein Werkstück ein.Hand-held driving devices with propellant charge are known from the prior art, in which after ignition of a pyrotechnic charge, the resulting fuel gases expand in a combustion chamber. As a result, a piston is accelerated as energy transfer means and drives a fastener into a workpiece.

Ein bekanntes pyrotechnisches Eintreibgerät wird unter der Bezeichnung DX 36 von der Hilti Corporation, Schaan, Liechtenstein, vertrieben. Bei diesem Gerät kann die Eintreibenergie eines Befestigungselements bei Bedarf durch kontrollierte Vorstellung der Startposition des Kolbens in einer Brennkammer reduziert werden. Hierzu ist ein Stellrad an dem Gerät vorgesehen, das sich seitlich versetzt zu einer zentralen Achse des Kolbens in einem bezüglich der Eintreibrichtung hinteren Abschnitt des Gerätes befindet.A known pyrotechnic tacker is sold under the designation DX 36 by Hilti Corporation, Schaan, Liechtenstein. In this device, the driving force of a fastener can be reduced if necessary by controlled presentation of the starting position of the piston in a combustion chamber. For this purpose, a setting wheel is provided on the device, which is laterally offset from a central axis of the piston in a respect to the driving direction rear portion of the device.

Ferner handelt es sich bei dem Gerät DX 36 um einen Bautyp von Eintreibgeräten ohne automatische Kolbenrückführung. Bei dem Gerät DX 36 wird der Kolben nach einem Eintreibvorgang durch eine manuelle Repetierbewegung in eine Startposition verbracht. Hierzu wird in einem ersten Abschnitt der Repetierbewegung eine Kolbenführung in Eintreibrichtung nach vorne geschoben, wobei ein gehäusefester Anschlag die Bewegung des Kolbens in der gleichen Richtung begrenzt. Dadurch ergibt sich eine Relativbewegung des Kolbens in Bezug auf die Kolbenführung nach hinten entgegen der Setzrichtung. Der Kolben wird also durch den ersten Teil der Repetierbewegung in eine hintere Position in der Kolbenführung verbracht, die einer Startposition mit maximaler Eintreibenergie entspricht.Further, the DX 36 is a type of driver without automatic piston return. In the device DX 36, the piston is moved after a driving operation by a manual Repetierbewegung in a start position. For this purpose, in a first portion of the repeating movement, a piston guide is pushed forward in the driving direction, with a housing-fixed stop limiting the movement of the piston in the same direction. This results in a relative movement of the piston with respect to the piston guide to the rear against the setting direction. The piston is thus spent by the first part of the repeating movement in a rear position in the piston guide, which corresponds to a start position with maximum driving energy.

In einem zweiten Abschnitt der Repetierbewegung wird die Kolbenführung mitsamt dem Kolben in der Gegenrichtung nach hinten geschoben, bis die Kolbenführung einen definierten hinteren Anschlag erreicht. Beim Anpressen des Geräts an einen Untergrund unmittelbar vor einem Eintreibvorgang werden der Kolben und die Kolbenführung nun zunächst gemeinsam noch weiter nach hinten geschoben, bis der Kolben auf einen mittels des Stellrads verstellbaren Anschlag trifft. Beim weiteren Anpressen bleibt also der Kolben stehen und die Kolbenführung wird alleine weiter nach hinten geschoben. Die damit verbundene Relativbewegung zwischen dem Kolben und der Kolbenführung bewirkt schliesslich die oben erwähnte Vorstellung der Startposition des Kolbens in der Brennkammer. Weitere Eintreibgeräte sind auch aus DE 2548014 A1 sowie De 2447767 A1 benannt.In a second section of the repeating movement, the piston guide is pushed together with the piston in the opposite direction to the rear until the piston guide reaches a defined rear stop. When pressing the device to a substrate immediately prior to a driving operation, the piston and the piston guide are now first jointly further pushed back until the piston meets an adjustable stop by means of the adjusting wheel. During further pressing, the piston thus stops and the piston guide is pushed further backwards on its own. The associated relative movement between the piston and the piston guide finally causes the above-mentioned idea of the starting position of the piston in the combustion chamber. Other tackers are also out DE 2548014 A1 such as De 2447767 A1 named.

Es ist die Aufgabe der Erfindung, ein Eintreibgerät anzugeben, das eine einfache Einstellung einer Eintreibenergie bei gegebener Treibladung ermöglicht.It is the object of the invention to provide a tacker that allows easy adjustment of a driving energy given a propellant charge.

Diese Aufgabe wird für eine eingangs genannte Eintreibvorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch das Vorsehen einer Kulisse mit mehreren Anschlagpositionen kann das Kolbenglied auf einfache Weise in seiner Startposition verändert werden, indem die jeweils gewünschte Anschlagposition an der Kulisse selektiert wird.This object is achieved according to the invention for a drive-in device mentioned above with the characterizing features of claim 1. By providing a backdrop with multiple stop positions, the piston member can be changed in a simple manner in its starting position by the respective desired stop position is selected on the backdrop.

Eine solche Ausbildung von axial verschiedenen Anschlagpositionen hat zudem den Vorteil, dass sie eine lineare oder sonstig gewünschte Stellskala der Eintriebenergie ermöglicht, selbst wenn der Zusammenhang zwischen Startposition und Eintreibenergie des Kolbens stark nichtlinear ist.Such a design of axially different stop positions also has the advantage that it allows a linear or otherwise desired control scale of the drive energy, even if the relationship between the starting position and Eintreibenergie the piston is highly nonlinear.

Die Kulisse ist an einem die Kolbenführung umlaufenden Hülsenglied angeordnet. Ein solches Hülsenglied bietet sich für eine einfache mechanische Realisierung an, die nur wenig Bauraum beansprucht. Insbesondere kann dadurch eine axiale Distanz zwischen der Kulisse und einem Bedienteil zur Verstellung der Kulisse überbrückt werden.The backdrop is arranged on a piston member surrounding the piston guide. Such a sleeve member lends itself to a simple mechanical realization, which takes up little space. In particular, an axial distance between the gate and a control panel for adjusting the scenery can thereby be bridged.

Unter einer Kulisse wird im Sinne der Erfindung ein Bauteil verstanden, bei dem eine in axialer Richtung orientierte Oberfläche vorgesehen ist, deren axiale Position in Abhängigkeit von einer Position senkrecht zu der axialen Richtung verschieden ist. Es kann sich dabei um Stufen, kontinuierliche Rampen oder auch eine Kombination aus Stufen und Rampen handeln. Zumindest einige der axial verschiedenen Positionen sind dabei als definierte Anschlagpositionen zur Verstellung des Kolbenglieds vorgesehen.In the context of the invention, a sliding link is understood to be a component in which an axially oriented surface is provided whose axial position differs depending on a position perpendicular to the axial direction. These can be steps, continuous ramps or even a combination of steps and ramps act. At least some of the axially different positions are provided as defined stop positions for adjusting the piston member.

Eine Zentralachse im Sinne der Erfindung ist eine zu der Bewegung des Befestigungselements zumindest parallele Achse. Bevorzugt verläuft die Zentralachse auch durch eine Mitte des Befestigungselements und des Kolbenglieds.A central axis in the sense of the invention is an axis at least parallel to the movement of the fastening element. Preferably, the central axis also passes through a center of the fastener and the piston member.

Unter einer Eintreibenergie wird im Sinne der Erfindung die Bewegungsenergie eines gegebenen Befestigungsmittels bei gegebener Treibladung verstanden. Bei Vorgabe dieser Randbedingungen ist es durch das Stellglied ermöglicht, die resultierende Eintreibenergie des Befestigungsmittels einstellbar zu verändern.In the context of the invention, a driving energy is understood to mean the kinetic energy of a given fastening means for a given propellant charge. Given these boundary conditions, it is possible by the actuator to adjust the resulting driving energy of the fastener adjustable.

Ein Kolbenglied im Sinne der Erfindung ist jedes Mittel, das durch die Zündung der Ladung mit Bewegungsenergie beaufschlagt wird, wobei die Bewegungsenergie letztlich auf das Befestigungsmittel übertragen wird. Häufig ist das Kolbenglied als insbesondere zylindrischer Kolben ausgeführt. In dem Kolbenboden können Aussparungen oder andere Strukturen vorgesehen sein, die eine Verwirbelung und gleichmäßige Expansion der Brenngase weiter begünstigen. Bevorzugt ist an dem Kolbenglied, insbesondere an einem Kolbenkopf des Kolbenglieds ein radial abstehender, bevorzugt stiftförmiger Vorsprung angeordnet, welcher einen Gegenanschlag für die Kulisse umfasst. Unter einem Befestigungselement im Sinne der Erfindung wird allgemein jede eintreibbare Verankerung, wie zum Beispiel Nagel, Bolzen oder Schraube, verstanden.A piston member according to the invention is any means which is acted upon by the ignition of the charge with kinetic energy, wherein the kinetic energy is ultimately transferred to the fastening means. Often the piston member is designed as a particular cylindrical piston. In the piston head recesses or other structures may be provided which further promote turbulence and uniform expansion of the fuel gases. Preferably, a radially projecting, preferably pin-shaped projection is arranged on the piston member, in particular on a piston head of the piston member, which comprises a counter-stop for the slide. Under a fastener according to the invention is generally understood any retractable anchoring, such as nail, bolt or screw understood.

Bei einer bevorzugten Ausführungsform der Erfindung ist die Kulisse um die Zentralachse verschwenkbar, wodurch sich eine einfache und raumsparende Veränderung der Anschlagposition erzielen lässt.In a preferred embodiment of the invention, the link is pivotable about the central axis, whereby a simple and space-saving change in the stop position can be achieved.

Allgemein vorteilhaft hat das Stellglied ein um die Zentralachse verschwenkbares Bedienteil. Durch die Verschwenkbarkeit des Bedienteils um die Zentralachse ist eine einfache Verstellung bei zugleich effektiver Sichtkontrolle des eingestellten Wertes erzielbar. Eine solche Anordnung ermöglicht zudem eine einfache Verstellung selbst unter ungünstigen Bedingungen wie zum Beispiel dem Tragen von Arbeitshandschuhen. Bei dem Bedienteil kann es sich um jedes geeignete Mittel zum manuellen Verstellen handeln, wie etwa eine verdrehbare Hülse, ein verschwenkbarer Knopf oder Ähnliches.Generally advantageous, the actuator has a pivotable about the central axis control panel. Due to the pivotability of the control panel about the central axis is a simple adjustment at the same time effective visual control of the set value achievable. Such an arrangement also allows easy adjustment even under unfavorable conditions such as wearing work gloves. The control panel may be any suitable means for manual adjustment, such as a rotatable sleeve, a pivotable knob, or the like.

Eine Verschwenkung des Bedienteils um die Zentralachse bedeutet dabei eine im Wesentlichen senkrecht zu der Achse orientierte Auslenkung des Bedienteils aus einer vorherigen Position. Eine Bewegungslinie bzw. Trajektorie des Bedienteils hat dabei einen Krümmungsradius, der bevorzugt nicht kleiner ist als ein Abstand des Bedienteils von der Zentralachse. Bevorzugt, aber nicht notwendig handelt es sich bei der Verschwenkung um eine Rotation um die Zentralachse.A pivoting of the operating part about the central axis means a substantially perpendicular to the axis oriented deflection of the control panel from a previous position. A movement line or trajectory of the operating part has a radius of curvature, which is preferably not smaller than a distance of the operating part from the central axis. Preferably, but not necessarily, the pivoting is a rotation about the central axis.

Bei einer einfachen Realisierung ist das Bedienteil über eine mechanische Zwangssteuerung mit der Kulisse gekoppelt. In bevorzugter Weiterbildung sind dabei das Bedienteil und die Kulisse über die Zwangssteuerung axial zueinander verschiebbar und drehfest miteinander verbunden. Dies erlaubt insbesondere eine axiale Veränderung der Position der Kulisse gegenüber dem Gehäuse im Zuge einer Einstellung der Kolbenposition.In a simple implementation, the control panel is coupled via a mechanical positive control with the backdrop. In a preferred embodiment, the control panel and the scenery on the positive control are axially mutually displaceable and rotatably connected to each other. This allows in particular an axial change of the position of the slide relative to the housing in the course of adjusting the piston position.

Allgemein vorteilhaft ist das Bedienteil als eine ringförmige Hülse ausgebildet, wobei die Hülse die Zentralachse umfängt. Zur Einstellung der Eintreibenergie kann dann die Hülse in mehrere verschiedene Positionen verdreht werden, wobei zumindest zwei verschiedene Positionen zwei verschiedenen Eintreibenergien zugeordnet sind.Generally advantageously, the operating part is designed as an annular sleeve, wherein the sleeve surrounds the central axis. To adjust the driving energy then the sleeve can be rotated in several different positions, wherein at least two different positions are assigned to two different driving forces.

Ein erfindungsgemäßes Bedienteil und insbesondere eine vorstehend beschriebene Hülse können zur Optimierung der Ergonomie des Gerätes in einem vorderen Bereich vor einem Handgriff des Gerätes angeordnet sein. Hierbei kann sich in Anordnung und Gestaltung des Bedienteils eine vorteilhafte Analogie zu bekannten Bedienteilen von handgeführten Bohrmaschinen und/oder Akkuschraubern ergeben. Die Bedienteile solcher Geräte dienen dabei entsprechend anderen Zwecken, zum Beispiel einer Drehmomentverstellung oder einer Umstellung von Schraubbetrieb auf Hammerbetrieb bei einer Schlagbohrmaschine.An inventive control panel and in particular a sleeve described above can be arranged to optimize the ergonomics of the device in a front area in front of a handle of the device. This can result in arrangement and design of the control panel an advantageous analogy to known controls of hand-held drills and / or cordless screwdrivers. The controls of such devices are used according to other purposes, such as a torque adjustment or a change from screwing to hammer operation in a percussion drill.

Weiterhin vorteilhaft kann es vorgesehen sein, dass die Kolbenführung im Zuge einer Anpressbewegung des Eintreibgerätes relativ zu der Kulisse axial verschoben wird. Dies erlaubt eine raumsparende und effektive Veränderung der Startposition des Kolbenglieds. Dabei wird beim Anpressvorgang vor einem Auslösen des Eintreibgerätes ein Vorderteil des Gerätes um einen bestimmten Hub eingeschoben, wodurch die entsprechenden Relativbewegungen von Kolbenführung, Kolbenglied und Kulisse bewirkt werden. Alternativ oder ergänzend hierzu kann die Einstellung der Startposition des Kolbenglieds auch im Zuge einer Repetierbewegung des nach einem Eintreibvorgang erfolgen.Further advantageously, it may be provided that the piston guide is axially displaced relative to the link in the course of a pressing movement of the tacker. This allows a space-saving and effective change in the starting position of the piston member. In this case, a front part of the device is pushed by a certain stroke in the Anpressvorgang before triggering the Eintreibgerätes, whereby the corresponding relative movements of the piston guide, piston member and backdrop are effected. Alternatively or additionally, the setting of the starting position of the piston member can also take place in the course of a repeating movement of the after a driving operation.

Eine einfache und effektive Realisierung der Erfindung sieht vor, dass das Kolbenglied einen Anschlag aufweist, mittels dessen das Kolbenglied im Zuge der Einstellung seiner Startposition unmittelbar an einer der Anschlagpositionen der Kulisse anschlägt. Hierdurch wird auch die Anzahl der Bauteil klein gehalten.A simple and effective implementation of the invention provides that the piston member has a stop by means of which the piston member abuts in the course of setting its starting position directly to one of the stop positions of the gate. As a result, the number of components is kept small.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus dem Ausführungsbeispiel sowie aus den abhängigen Ansprüchen. Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung beschrieben und anhand der anliegenden Zeichnungen näher erläutert.

Fig. 1
zeigt eine seitliche Aufsicht eines erfindungsgemäßen Eintreibgerätes.
Fig. 2
zeigt das Gerät aus Fig. 1 in einer Aufsicht von oben.
Fig. 3
zeigt eine aufgeschnittene räumliche Ansicht eines Innenbereiches des Gerätes aus Fig. 1, wobei das Gerät nicht aufgesetzt ist.
Fig.4
zeigt die Ansicht aus Fig. 3, wobei das Gerät aufgesetzt ist und eine Eintreibenergie maximal eingestellt ist.
Fig. 5
zeigt die Ansicht aus Fig. 4, wobei die Eintreibenergie um zwei Stufen reduziert ist.
Fig. 6
zeigt eine räumliche Ansicht einer an einem Hülsenglied ausgebildeten Kulisse des Gerätes aus Fig. 3.
Fig. 7
zeigt eine weitere aufgeschnittene räumliche Ansicht eines Innenbereiches des Gerätes aus Fig. 1.
Further features and advantages of the invention will become apparent from the embodiment and from the dependent claims. Hereinafter, a preferred embodiment of the invention will be described and explained in more detail with reference to the accompanying drawings.
Fig. 1
shows a side elevation of a tacker according to the invention.
Fig. 2
shows the device Fig. 1 in a top view.
Fig. 3
shows a cutaway spatial view of an interior of the device Fig. 1 , the device is not attached.
Figure 4
shows the view Fig. 3 , The device is mounted and a driving energy is set maximum.
Fig. 5
shows the view Fig. 4 , wherein the driving energy is reduced by two levels.
Fig. 6
shows a spatial view of a formed on a sleeve member backdrop of the device Fig. 3 ,
Fig. 7
shows another cutaway spatial view of an interior of the device Fig. 1 ,

Eine erfindungsgemäße Eintreibvorrichtung umfasst ein handgeführtes Gehäuse 1, in dem ein Kolbenglied in Form eines Kolbens 2 aufgenommen ist. Eine hintere Oberfläche des Kolbens 2 begrenzt eine Brennkammer 3, in der sich die Verbrennungsgase einer pyrotechnischen Ladung ausdehnen, um den Kolben 2 zu beschleunigen.A drive-in device according to the invention comprises a hand-guided housing 1, in which a piston member in the form of a piston 2 is accommodated. A rear surface of the piston 2 defines a combustion chamber 3 in which the combustion gases of a pyrotechnic charge expand to accelerate the piston 2.

Der so mit Bewegungsenergie beaufschlagte Kolben 2 trifft mit einem endseitigen Stößel auf ein Befestigungselement (nicht dargestellt), das hierdurch in ein Werkstück eingetrieben wird.The so acted upon by kinetic energy piston 2 hits with an end-side plunger on a fastener (not shown), which is thereby driven into a workpiece.

Die Ladung ist vorliegend in einer Kartusche aus Metallblech aufgenommen. Die Kartusche hat einen Aufschlagzünder und wird vor der Zündung über eine entsprechende Lademechanik in ein Kartuschenlager 4 eingesetzt. Die Kartusche und das Kartuschenlager 4 sind rotationssymmetrisch um eine Zentralachse A ausgebildet. Die Zentralachse A ist in den vorliegenden Beispielen zugleich eine Mittelachse der Brennkammer 3 und des Kolbenglieds 2.The charge is presently received in a cartridge made of sheet metal. The cartridge has an impact fuze and is inserted into a cartridge bearing 4 before ignition via a corresponding loading mechanism. The cartouche and the cartridge warehouse 4 are formed rotationally symmetrical about a central axis A. The central axis A is in the present examples at the same time a central axis of the combustion chamber 3 and the piston member. 2

Die Brennkammer 3 mit dem Kartuschenlager 4 ist Bestandteil einer Kolbenführung 5. Die Kolbenführung 5 ist als linear in dem Gehäuse 1 des Eintreibgeräts entlang der Achse verschiebbares Bauteil ausgebildet. Das Kolbenglied 2 ist seinerseits in der Kolbenführung 5 linear entlang der Zentralachse A verschiebbar.The combustion chamber 3 with the cartridge bearing 4 is part of a piston guide 5. The piston guide 5 is formed as a linearly displaceable in the housing 1 of the tacker along the axis component. The piston member 2 is in turn displaceable in the piston guide 5 linearly along the central axis A.

Die Kobenführung ist in ihrem vorderen Bereich im Wesentlichen als hohlzylindrisches Element ausgeformt, wobei ab einem Ende des Bereichs der Brennkammer 3 eine Schlitzung 6 in der Wand der Kolbenführung 5 vorgesehen ist.The Kobenführung is formed in its front portion substantially as a hollow cylindrical element, wherein from one end of the region of the combustion chamber 3, a slit 6 is provided in the wall of the piston guide 5.

Ein Vorderteil 8 ist mit der Kolbenführung 5 verbunden. Eine Aufnahme 7 für das Befestigungsmittel ist in dem Vorderteil 8 angeordnet. Das Vorderteil 8 wird im Zuge eines Eintreibvorgangs auf das Werkstück aufgesetzt und entgegen einer Federkraft um einen Hub H (siehe Fig. 3) eingeschoben. Hierdurch wird die Kolbenführung 5 mit dem Kartuschenlager 4 nach hinten gegen eine Auslösemechanik 9 gedrückt, so dass die Kartusche gezündet werden kann.A front part 8 is connected to the piston guide 5. A receptacle 7 for the fastening means is arranged in the front part 8. The front part 8 is placed in the course of a driving operation on the workpiece and counter to a spring force by a stroke H (see Fig. 3 ) inserted. As a result, the piston guide 5 is pressed with the cartridge bearing 4 to the rear against a trigger mechanism 9, so that the cartridge can be ignited.

Das Kolbenglied 2 umfasst einen Anschlag in Form eines seitlich vorragenden Zapfens 2a, der in der Schlitzung 6 der Kolbenführung 5 läuft. Der Zapfen 2a steht über die Außenwand der Kolbenführung 5 vor und kann an einer von mehreren Anschlagpositionen 10 a einer Kulisse 10 anschlagen. Hierdurch wird je nach Anschlagposition eine Kolbenposition in der Kolbenführung 5 zum Zündzeitpunkt der Ladung eingestellt. Eine hinterste Position des Kolbenglieds (siehe Fig. 4) entspricht einer maximalen Eintreibenergie. Eine vorgestellte Position (siehe Fig. 5, dort um zwei Stufen vorgestellt) entspricht einer reduzierten Eintreibenergie.The piston member 2 comprises a stop in the form of a laterally projecting pin 2a, which runs in the slot 6 of the piston guide 5. The pin 2a protrudes beyond the outer wall of the piston guide 5 and can abut on one of a plurality of stop positions 10 a of a link 10. As a result, depending on the stop position, a piston position in the piston guide 5 is set at the ignition time of the charge. A rearmost position of the piston member (see Fig. 4 ) corresponds to a maximum driving energy. An introduced position (see Fig. 5 , presented there by two levels) corresponds to a reduced driving energy.

Aus dem Vergleich von Fig. 3 (nicht aufgesetzter Zustand) und Fig. 4 bzw. Fig. 5 (aufgesetzte Zustände) ist ersichtlich, dass das Kolbenglied 2 nach einer Repetierbewegung / Kolbenrückstellung zunächst in der hintersten Position in der Kolbenführung 5 angeordnet ist. Erst über den Hub H des Aufsetzens wird die Kolbenführung 5 weiter nach hinten verschoben, wobei das Kolbenglied 2 ab einem unmittelbarem Anschlag des Zapfens 2a an der Kulisse 10 in der axialen Position verbleibt.From the comparison of Fig. 3 (not attached state) and Fig. 4 respectively. Fig. 5 (applied states) can be seen that the piston member 2 is initially arranged in the rearmost position in the piston guide 5 after a Repetierbewegung / piston return. Only over the stroke H of placement, the piston guide 5 is moved further to the rear, the piston member 2 remains from a direct stop of the pin 2a on the link 10 in the axial position.

Die Kulisse 10 ist an einem hinteren Bereich eines Hülsenglieds 11 ausgebildet und hat die Form einer in Umfangsrichtung um die Zentralachse gebogenen Treppe. Die einzelnen Stufen bzw. Anschlagpositionen 10a sind in axialer Richtung nicht gleichmäßig hoch, sondern zur Linearisierung einer Einstellskala der Eintreibenergie angepasst.The gate 10 is formed on a rear portion of a sleeve member 11 and has the shape of a circumferentially curved about the central axis stairs. The individual stages or stop positions 10a are not uniformly high in the axial direction, but adapted for linearization of a setting scale of the driving energy.

Das Hülsenglied 11 umfängt die Kolbenführung 5 und kann gegenüber dieser sowohl verdreht werden als auch axial verschoben werden. In einem vorderen Bereich hat das Hülsenglied zwei axial erstreckte Schlitzungen 11a, die zur Verkämmung mit Gleitsteinen 12a eines Bedienteils ausgebildet sind.The sleeve member 11 surrounds the piston guide 5 and can be both rotated and axially displaced with respect to this. In a front region, the sleeve member has two axially extending slots 11a which are formed to interlock with sliding blocks 12a of a control panel.

Das Bedienteil 12 ist vorliegend als drehbare, ringförmige Hülse ausgebildet, die im Wesentlichen konzentrisch um die Zentralachse A in einem vorderen Bereich des Gehäuses 1 des Eintreibgerätes angeordnet ist. Das Bedienteil ist in axialer Richtung ortsfest an dem Gehäuse hat eine Skala, die seine Stellung in Drehrichtung anzeigt. Das Hülsenglied 11 ist mit der Kulisse 10 über die in die Schlitzungen 11a eingreifenden Gleitsteine 12a drehfest, aber axial verschiebbar mit dem Bedienteil 12 verbunden. Die Gleitsteine 12a und die Schlitzungen 11a bilden entsprechend eine Zwangssteuerung zur Verbindung von Bedienteil 12 und Kulisse 10 aus. Insgesamt bilden somit die Kulisse 10, das Hülsenglied 11 und das Bedienteil 12 ein Stellglied zur Verstellung der Eintreibenergie des Gerätes aus.The control unit 12 is presently designed as a rotatable annular sleeve which is arranged substantially concentrically around the central axis A in a front region of the housing 1 of the tacker. The control unit is fixed in the axial direction on the housing has a scale that indicates its position in the direction of rotation. The sleeve member 11 is rotatably connected to the gate 10 via the sliding into the slots 11a sliding blocks 12a, but axially displaceable with the control panel 12. The sliding blocks 12a and the slits 11a correspondingly form a positive control for the connection of the operating part 12 and the gate 10. Overall, thus form the backdrop 10, the sleeve member 11 and the control panel 12 is an actuator for adjusting the driving energy of the device.

Zur Vorbereitung eines nächsten Eintreibvorgangs wird die gewünschte Eintreibenergie als auf dem Bedienteil markierte Energiestufe durch Verdrehen der Hülse 12 eingestellt. Dies führt über die vorstehend beschriebene Zwangssteuerung zu einer gewählten Positionierung der Kulisse in Umfangsrichtung relativ zu dem Zapfen 2a des Kolbenglieds 2.To prepare for a next driving operation, the desired driving energy is set as the energy level marked on the operating part by turning the sleeve 12. This leads via the positive control described above to a selected positioning of the link in the circumferential direction relative to the pin 2a of the piston member. 2

Die eigentliche relative Positionierung des Kolbenglieds 2 in der Kolbenführung 5 erfolgt dann wie vorstehend beschrieben im Zuge eines Aufsetzens des Eintreibgerätes mit entsprechendem Eindrücken um den Hub H. Dabei wird das Hülsenglied 11 mit der Kulisse 10 gegen einen hinteren, zum Gehäuse 1 ortsfesten Anschlag 13 abgestützt. Der Anschlag 13 ist vorliegend stiftförmig. Ein hinterer axialer Anschlag für das Hülsenglied 11 bzw. die Kulisse 10 ist erforderlich, da die Kulisse 10 im vorliegenden Fall in axialer Richtung gegenüber dem Gehäuse 1 verschiebbar ist.The actual relative positioning of the piston member 2 in the piston guide 5 is then as described above in the course of placement of the tacker with appropriate impressions to the stroke H. In this case, the sleeve member 11 is supported with the gate 10 against a rear, fixed to the housing 1 stop 13 , The stop 13 is present pin-shaped. A rear axial stop for the sleeve member 11 and the gate 10 is required because the slide 10 in the present case in the axial direction relative to the housing 1 is displaceable.

Die erfindungsgemäße Ausbildung einer Kolbenvorstellung mittels einer verstellbaren Kulisse ist nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. So kann zum Beispiel alternativ eine Konstruktion vorliegen, bei der die Kolbenvorstellung nicht erst im Zuge des Aufsetzens stattfindet, sondern bereits im Zuge der Repetierbewegung.The inventive design of a piston presentation by means of an adjustable link is not limited to the embodiment described above. For example, there may alternatively be a construction in which the piston projection does not take place first in the course of placement, but already in the course of the repeating movement.

Claims (8)

  1. Driving device, comprising
    a hand-held housing (1),
    a piston element (2) accommodated in a piston guide (5) for transferring energy from a propellant to a fastening element to be driven,
    in which the piston element (2) extends along a central axis (A), and
    a control element (10, 11, 12), by means of which a starting position of the piston element (2) may be changed for changing the energy transferred from the propellant to the piston element (2) in an adjustable way,
    in which the control element comprises a link (10) with several different stop positions (10a) in the axial direction,
    characterised in that
    the link (10) is arranged on a sleeve element (11) surrounding the piston guide (5).
  2. Driving device according to claim 1, characterised in that the link (10) may be swivelled around the central axis (A).
  3. Driving device according to one of the previous claims, characterised in that the control element (10, 11, 12) has an operating part (12) that may be swivelled around the central axis (A).
  4. Driving device according to claim 3, characterised in that the operating part (12) is connected to the link (10) through a mechanical forced control (11a, 12a).
  5. Driving device according to claim 4, characterised in that the operating part (12) and the link (10) are connected to each other in a rotationally fixed way and able to move axially to each other through the forced control (11a, 12a).
  6. Driving device according to one of claims 3 to 5, characterised in that the operating part (12) is made as an annular sleeve, in which the sleeve surrounds the central axis (A).
  7. Driving device according to one of the previous claims, characterised in that the piston guide (5) is moved axially in relation to the link (10) in the course of a pressing movement of the driving device.
  8. Driving device according to one of the previous claims, characterised in that the piston element (2) has a stop (2a), by means of which the piston element (2) hits one of the stop positions (10a) of the link (10) directly in the course of starting position being adjusted.
EP15712125.2A 2014-03-28 2015-03-24 Pyrotechnic insertion device Active EP3122516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14162173.0A EP2923800A1 (en) 2014-03-28 2014-03-28 Pyrotechnic insertion device
PCT/EP2015/056240 WO2015144694A1 (en) 2014-03-28 2015-03-24 Pyrotechnic driving device

Publications (2)

Publication Number Publication Date
EP3122516A1 EP3122516A1 (en) 2017-02-01
EP3122516B1 true EP3122516B1 (en) 2018-05-02

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EP14162173.0A Withdrawn EP2923800A1 (en) 2014-03-28 2014-03-28 Pyrotechnic insertion device
EP15712125.2A Active EP3122516B1 (en) 2014-03-28 2015-03-24 Pyrotechnic insertion device

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Country Status (8)

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US (1) US20160339574A1 (en)
EP (2) EP2923800A1 (en)
CN (1) CN106132638B (en)
AU (2) AU2015238468A1 (en)
BR (1) BR112016017011B1 (en)
ES (1) ES2668944T3 (en)
RU (1) RU2685558C2 (en)
WO (1) WO2015144694A1 (en)

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Also Published As

Publication number Publication date
BR112016017011B1 (en) 2020-12-08
EP3122516A1 (en) 2017-02-01
AU2015238468A1 (en) 2016-08-11
CN106132638A (en) 2016-11-16
EP2923800A1 (en) 2015-09-30
RU2685558C2 (en) 2019-04-22
US20160339574A1 (en) 2016-11-24
CN106132638B (en) 2018-09-18
WO2015144694A1 (en) 2015-10-01
RU2016142298A3 (en) 2018-04-28
RU2016142298A (en) 2018-04-28
AU2017225052A1 (en) 2017-09-28
ES2668944T3 (en) 2018-05-23

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