EP3349944A1 - Fuel gas-fired driving-in tool having a valve member - Google Patents

Fuel gas-fired driving-in tool having a valve member

Info

Publication number
EP3349944A1
EP3349944A1 EP16760514.6A EP16760514A EP3349944A1 EP 3349944 A1 EP3349944 A1 EP 3349944A1 EP 16760514 A EP16760514 A EP 16760514A EP 3349944 A1 EP3349944 A1 EP 3349944A1
Authority
EP
European Patent Office
Prior art keywords
valve member
combustion chamber
driving
fuel gas
tacker
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
EP16760514.6A
Other languages
German (de)
French (fr)
Other versions
EP3349944B1 (en
Inventor
Klaus Raggl
Christoph Boehm
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
Original Assignee
Hilti AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP3349944A1 publication Critical patent/EP3349944A1/en
Application granted granted Critical
Publication of EP3349944B1 publication Critical patent/EP3349944B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B25C1/082—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet
    • B25C1/085—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet 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
    • B25C1/008—Safety devices
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/044—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with movable main cylinder
    • B25C1/046—Trigger valve and trigger mechanism
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047—Mechanical details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/121—Housing details

Definitions

  • the invention relates to a tacker, in particular a hand-held tacker, according to the preamble of claim 1.
  • WO 2012/046217 A1 describes a tacker, in which a driving piston is moved by means of a drive to generate an overpressure against a combustion chamber. This allows an increase of the driving energy with the same combustion chamber size.
  • WO 2009/140728 A1 describes a fuel-operated driving tool for driving a nail into a workpiece, in which a combustion chamber is charged with a fuel gas, wherein after a firing process, a driving piston is accelerated against the nail.
  • the fuel gas can be charged by combined action by means of a fan and the stroke of the drive piston to an overpressure to achieve an increase in the driving energy.
  • Driving energy may be influenced by an adjustable blow-off valve through which a portion of the burned and expanded gas escapes during piston acceleration.
  • valve member By providing the valve member, the existing before the ignition overpressure can be easily adjusted to an intermediate value below a maximum pressure. Under an overpressure of the fuel gas mixture in the context of the invention, an increased pressure to increase the driving energy is understood. Even with conventional, uncharged devices, the pressure of the fuel gas mixture is usually slightly above an ambient pressure, since the pressurized fuel gas is added to the air under atmospheric pressure in the combustion chamber. This is only a slight increase in pressure.
  • An overpressure according to the invention is preferably at least 100 mbar, more preferably at least 200 mbar above atmospheric pressure.
  • a valve member according to the invention blocks or opens a connection between the combustion chamber and / or the cylinder and an outer space.
  • the valve member is not understood to mean a movable combustion chamber part, by means of which displacement the combustion chamber is first formed.
  • the combustion chamber comprises at least two mutually movable combustion chamber parts, wherein the combustion chamber parts are combined only in a pressed state of the tacker to the closed combustion chamber.
  • Devices of this type are generally known and, by design, have a high degree of safety against unwanted or abusive tripping.
  • the combustion chamber parts are moved relative to one another via a pressure linkage.
  • valve member is designed as a switching valve connected to the combustion chamber. This allows a particularly continuous adjustment of the overpressure over a wide range.
  • a switching valve is preferably understood to mean an electrically actuated switching valve which has at least the two states “open” and "closed”.
  • a circuit of the valve member is effected in dependence on a position of the driving piston.
  • the positive pressure achieved is connected to the location of the beginning of a compressing piston movement, the preceding de piston movement causes no compression because of the open valve.
  • a temporal control of the valve member can take place.
  • a targeted pressure reduction can be achieved in the combustion chamber.
  • a circuit of the valve member takes place as a function of a measurement by means of a pressure sensor.
  • the pressure sensor requires a further component, on the other hand, however, the desired pressure can be adjusted particularly accurately and reliably.
  • the valve member may be formed as an adjustable pressure relief valve. This allows, for example, a simple realization by means of a spring mechanism on the valve member. In order to avoid or reduce a partial blow-off of the higher combustion pressure after the ignition of the fuel gas mixture, such a valve member may be provided with an additional pressure-safe closing function. Alternatively, the valve member may be provided with a correspondingly small cross-section, which leads only to a small pressure loss during driving. In this case, the fact can be used that the restoring or compression process usually takes place considerably more slowly than the combustion or driving operation.
  • the valve member is formed as at least one arranged on the cylinder, selectable closable opening.
  • the open valve member of the driving piston can be moved without compression to the opening. After passing the opening through the piston then begins the compression.
  • a plurality of valve members or selectably closable openings in the longitudinal direction of the cylinder can be arranged one behind the other, so that a corresponding multi-stage adjustment of the compression travel or the overpressure is possible.
  • the valve member can also be a slot-shaped opening in the cylinder wall, which can be continuously covered, for example, by means of a displaceable outer sleeve.
  • the valve member can be controlled via an electronic control unit of the tacker. Alternatively, it may also be a mechanical control with a manual operation. Particularly simple mechanical activation can be realized by means of an adjustable pressure relief valve or by means provided in the cylinder wall, selectable closable opening.
  • the driving piston for generating the overpressure is adjustable via an electric drive. The mechanical work to compress or charge the fuel gas to the overpressure is done by the drive. This allows a high frequency of setting operations.
  • a further charging member preferably an electrically driven compressor, is additionally provided for acting on the combustion chamber with an overpressure of the fuel gas mixture.
  • a further charging member preferably an electrically driven compressor
  • Such a device therefore not only has an internal charge by means of the movement of the drive piston, but also via an external charge by means of the further charging member. If required, this also allows charging with an even higher overpressure, so that a particularly wide adjustability of the driving-in energy is made possible.
  • FIG. 1 shows a schematic sectional view of a tacker according to the invention of a first embodiment with electrically actuated valve member in the region of a combustion chamber in an open state
  • FIG. 2 shows the tacker of FIG. 1 in a second operating state
  • Fig. 3 shows the tacker of Fig. 1 in a third operating condition at the time of ignition.
  • FIG. 4 shows a schematic sectional view of a tacker according to the invention of a second embodiment with adjustable pressure relief valve
  • FIG. 5 shows a schematic sectional view of a tacker according to the invention of a third embodiment with a valve member in the region of a
  • Fig. 6 shows the tacker of Fig. 5, wherein the valve member to a maximum
  • the tacker of Fig. 1 is a hand-held device comprising a housing 1 and a combustion chamber 2 received therein with a combustion chamber wall. Adjacent to the combustion chamber 2 is a cylinder 3 with a guided therein driving piston 4.
  • a safety mechanism of the device comprises a An horrgestlinde with a Aufsetzhülse 5, which is placed on a workpiece (not shown) and against the pressure of a spring (not shown) is pressed. Only in this state, a driving operation can be triggered by igniting a fuel gas in the combustion chamber 2.
  • the combustion chamber 2 consists of several mutually movable combustion chamber parts (not shown), which are combined only after pressing the attachment sleeve 5 via the Anyakgestlinde to a closed space for receiving an ignitable fuel gas mixture.
  • Such types of combustion chambers with the aim of improving safety are generally known, for example from the publications mentioned above. In the present schematic drawings, therefore, the detailed description of this safety mechanism has been omitted.
  • An ignitable fuel gas mixture is presently introduced by means of a fuel gas storage 6 in the combustion chamber 2.
  • the fuel gas is compressed in the course of a provision of the drive piston 4 to an overpressure.
  • the drive piston 4 is driven in its return by a powered by a battery 7, electric drive 8, which engages a drive tappet 4a of the drive piston 4.
  • the fuel gas is introduced via a metering valve 9 from the fuel gas storage 6 into the air of the combustion chamber 2.
  • the fuel gas injection can take place in the not yet compressed, partially compressed or completely compressed air.
  • the driving piston 4 In the fully reset state (see FIG. 3), the driving piston 4 is held by a magnet holder 10 against the overpressure in the combustion chamber.
  • loaded combustion chamber can then be triggered by a manually operated trigger 1 1 ignition of the fuel gas mixture via a spark plug 12, so that the driving piston 4 is driven and on the driving ram 4a a nail member (not shown) from a magazine 13 drives into the workpiece.
  • the exhaust gases of the ignited and expanded fuel gas may enter the outer space via outlet openings 14 at the end of the travel of the drive piston.
  • the overpressure in the combustion chamber 2 achieved by the return of the driving piston can be adjusted to be selectable by means of a valve member 15 arranged on the combustion chamber 2.
  • the valve member 15 is designed as an electrically operated switching valve which is connected to an electronic control unit of the tacker. Over a setting by an operator, a driving energy is preselected in a given frame. Depending on this, the valve member is either permanently closed (maximum compression and Eincombergie) or it is closed only after a certain stroke of the drive piston on its return path.
  • valve member 15 In the state of FIG. 1, the valve member 15 is still in an open state, while the driving piston is already moved in the direction of the combustion chamber. As a result, air escapes through the valve member 15 (shown by arrows) and there is still no compression.
  • FIG. 2 shows the drive piston which has been moved about half its stroke. In this position, the valve member 15 is closed according to the selection by the operator and the structure of the overpressure in the combustion chamber begins.
  • Fig. 3 shows the fully recovered driving piston 4, which still rests against the magnet holder 10, while the ignition process by pressing the trigger 1 1 is initiated.
  • valve member 15 is not formed as in the first embodiment as an electrically controlled switching valve, but as an adjustable pressure relief valve or pressure control valve. This type of valve allows, for example, a purely mechanical preselection of the overpressure by the operator.
  • the overpressure valve is preferably completely closed when the ignition of the fuel gas mixture takes place. This can be realized, for example, by a second switching state or an additional valve connected in series (not shown). Since the expansion process of the ignited fuel gas but usually much faster than the Compression process, but it may also be sufficient depending on the requirements, to dimension the pressure relief valve with a correspondingly small outlet cross-section.
  • valve member 15 is respectively disposed on the combustion chamber and directly connected thereto.
  • valve member 15 is arranged on the cylinder 3.
  • a wall of the cylinder 3 is provided with a plurality of spaced apart in the longitudinal direction of the cylinder openings 16.
  • a valve spool in the form of a sleeve 17 in the present case, can selectively close the openings 16.
  • the driving piston 4 starts at different positions with the compression, depending on the position of the valve slide 17.
  • the valve spool 17 is positioned so that the combustion chamber next positioned opening is not closed. This leads to a maximum late compression of the drive piston on its return path and thus to a minimum overpressure.
  • valve spool 17 is positioned so that all openings 16 are covered. This leads to compression over the entire travel of the driving piston and therefore to maximum overpressure and maximum driving energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

The invention relates to a driving-in tool, comprising a driving-in piston (4), guided in a cylinder (3), for driving a nail element into a workpiece, and a combustion chamber (2) which is arranged at the driving-in piston (4) and can be filled with an ignitable fuel-gas mixture. A positive pressure of the fuel-gas mixture in the combustion chamber can be produced by a movement of the driving-in piston (4). At least one of the two, the combustion chamber (2) or the cylinder (3), is connected to an external space via a valve member (15), the positive pressure of the fuel-gas mixture produced by the driving-in piston being selectively adjustable by means of the valve member (15).

Description

Hilti Aktiengesellschaft in Schaan Fürstentum Liechtenstein  Hilti Aktiengesellschaft in Schaan Principality of Liechtenstein
Brenngasbetriebenes Eintreibgerät mit Ventilglied Fuel-powered driving tool with valve member
Die Erfindung betrifft ein Eintreibgerät, insbesondere ein handgeführtes Eintreibgerät, nach dem Oberbegriff des Anspruchs 1. The invention relates to a tacker, in particular a hand-held tacker, according to the preamble of claim 1.
WO 2012/046217 A1 beschreibt ein Eintreibgerät, bei dem ein Eintreibkolben mittels eines Antriebs unter Erzeugung eines Überdrucks gegen eine Brennkammer verfahren wird. Dies erlaubt eine Erhöhung der Eintreibenergie bei gleicher Brennkammergröße. WO 2012/046217 A1 describes a tacker, in which a driving piston is moved by means of a drive to generate an overpressure against a combustion chamber. This allows an increase of the driving energy with the same combustion chamber size.
WO 2009/140728 A1 beschreibt ein brenngasbetriebenes Eintreibgerät zum Eintreiben eines Nagels in ein Werkstück, bei dem eine Brennkammer mit einem Brenngas beschickt wird, wobei nach einem Zündvorgang ein Eintreibkolben gegen den Nagel beschleunigt wird. Das Brenngas kann durch kombinierte Maßnahmen mittels eines Ventilators sowie dem Hub des Eintreibkolbens auf einen Überdruck aufgeladen werden, um eine Vergrößerung der Eintreibenergie zu erzielen. WO 2009/140728 A1 describes a fuel-operated driving tool for driving a nail into a workpiece, in which a combustion chamber is charged with a fuel gas, wherein after a firing process, a driving piston is accelerated against the nail. The fuel gas can be charged by combined action by means of a fan and the stroke of the drive piston to an overpressure to achieve an increase in the driving energy.
DE 40 10 517 A1 zeigt ein herkömmliches, nicht aufgeladenes Eintreibgerät. Eine DE 40 10 517 A1 shows a conventional, uncharged tacker. A
Eintreibenergie kann über ein einstellbares Abblasventil, über das ein Teil des verbrannten und expandierten Gases während der Kolbenbeschleunigung entweicht, beeinflusst werden. Driving energy may be influenced by an adjustable blow-off valve through which a portion of the burned and expanded gas escapes during piston acceleration.
Es ist die Aufgabe der Erfindung, ein Eintreibgerät anzugeben, das eine hohe Flexibilität bei der Wahl einer Eintreibenergie aufweist. It is the object of the invention to provide a tacker which has a high flexibility in the choice of a driving energy.
Diese Aufgabe wird für ein eingangs genanntes Eintreibgerät erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch das Vorsehen des Ventilgliedes kann der vor der Zündung vorhandene Überdruck auf einfache Weise auf einen Zwischenwert unterhalb eines Maximaldrucks eingestellt werden. Unter einem Überdruck des Brenngasgemisches im Sinne der Erfindung wird ein erhöhter Druck zur Steigerung der Eintreibenergie verstanden. Auch bei herkömmlichen, nicht aufgeladenen Geräten liegt der Druck des Brenngasgemisches meist etwas oberhalb eines Umgebungsdrucks, da das unter Druck stehende Brenngas zu der unter Atmosphärendruck stehenden Luft in der Brennkammer hinzugefügt wird. Dabei handelt es sich nur um eine geringe Druckerhöhung. Ein Überdruck im Sinne der Erfindung liegt bevorzugt um wenigstens 100 mbar, besonders bevorzugt um wenigstens 200 mbar über dem Atmosphärendruck. Ein Ventilglied im Sinne der Erfindung versperrt bzw. öffnet eine Verbindung zwischen der Brennkammer und/oder dem Zylinder und einem Außenraum. Im Sinne der Erfindung wird unter dem Ventilglied nicht ein bewegbares Brennkammerteil verstanden, durch dessen Verlagerung die Brennkammer erst gebildet wird. Bei einer allgemein vorteilhaften Ausführungsform der Erfindung umfasst die Brennkammer zumindest zwei zueinander bewegbare Brennkammerteile, wobei die Brennkammerteile nur in einem angepressten Zustand des Eintreibgerätes zu der geschlossenen Brennkammer kombiniert sind. Geräte solcher Bauart sind allgemein bekannt und weisen konstruktionsbedingt eine hohe Sicherheit gegen ein ungewolltes oder missbräuchliches Auslösen auf. Bei einer bevorzugten Detailgestaltung der Erfindung werden dabei die Brennkammerteile über ein Andruckgestänge zueinander bewegt. This object is achieved according to the invention for a drive-in device mentioned above with the characterizing features of claim 1. By providing the valve member, the existing before the ignition overpressure can be easily adjusted to an intermediate value below a maximum pressure. Under an overpressure of the fuel gas mixture in the context of the invention, an increased pressure to increase the driving energy is understood. Even with conventional, uncharged devices, the pressure of the fuel gas mixture is usually slightly above an ambient pressure, since the pressurized fuel gas is added to the air under atmospheric pressure in the combustion chamber. This is only a slight increase in pressure. An overpressure according to the invention is preferably at least 100 mbar, more preferably at least 200 mbar above atmospheric pressure. A valve member according to the invention blocks or opens a connection between the combustion chamber and / or the cylinder and an outer space. For the purposes of the invention, the valve member is not understood to mean a movable combustion chamber part, by means of which displacement the combustion chamber is first formed. In a generally advantageous embodiment of the invention, the combustion chamber comprises at least two mutually movable combustion chamber parts, wherein the combustion chamber parts are combined only in a pressed state of the tacker to the closed combustion chamber. Devices of this type are generally known and, by design, have a high degree of safety against unwanted or abusive tripping. In a preferred embodiment of the invention, the combustion chamber parts are moved relative to one another via a pressure linkage.
Bei einer bevorzugten Ausführungsform der Erfindung ist das Ventilglied als ein mit der Brennkammer verbundenes Schaltventil ausgebildet. Dies erlaubt eine insbesondere kontinuierliche Einstellung des Überdrucks über einen weiten Bereich. Unter einem Schaltventil wird bevorzugt ein elektrisch angesteuertes Schaltventil verstanden, das zumindest die zwei Zustände„offen" und„geschlossen" aufweist. In a preferred embodiment of the invention, the valve member is designed as a switching valve connected to the combustion chamber. This allows a particularly continuous adjustment of the overpressure over a wide range. A switching valve is preferably understood to mean an electrically actuated switching valve which has at least the two states "open" and "closed".
In bevorzugter Weiterbildung erfolgt eine Schaltung des Ventilglieds dabei in Abhängigkeit von einer Position des Eintreibkolbens. Hierdurch ist der erzielte Überdruck mit dem Ort des Beginns einer komprimierenden Kolbenbewegung verbunden, wobei die vorhergehen de Kolbenbewegung wegen des geöffneten Ventils keine Kompression bewirkt. Alternativ oder ergänzend kann aber auch eine zeitliche Ansteuerung des Ventilgliedes erfolgen. Bei entsprechend bekanntem Querschnitt des Ventilglieds und Größe der Brennammer kann dann ein gezielter Druckabbau in der Brennkammer erreicht werden. Bei einer weiteren möglichen Ausführungsform erfolgt eine Schaltung des Ventilglieds in Abhängigkeit von einer Messung mittels eines Drucksensors. Zum einen macht der Drucksensor ein weiteres Bauteil erforderlich, zum anderen kann aber der gewünschte Druck besonders genau und zuverlässig eingestellt werden. In a preferred embodiment, a circuit of the valve member is effected in dependence on a position of the driving piston. As a result, the positive pressure achieved is connected to the location of the beginning of a compressing piston movement, the preceding de piston movement causes no compression because of the open valve. Alternatively or additionally, however, a temporal control of the valve member can take place. In accordance with known cross-section of the valve member and size of the combustion chamber then a targeted pressure reduction can be achieved in the combustion chamber. In a further possible embodiment, a circuit of the valve member takes place as a function of a measurement by means of a pressure sensor. On the one hand, the pressure sensor requires a further component, on the other hand, however, the desired pressure can be adjusted particularly accurately and reliably.
Bei einer weiteren möglichen Ausführungsform der Erfindung kann das Ventilglied als einstellbares Überdruckventil ausgebildet sein. Dies erlaubt zum Beispiel eine einfache Realisierung mittels einer Federmechanik an dem Ventilglied. Um ein teilweises Abblasen des höheren Verbrennungsdrucks nach der Zündung des Brenngasgemisches zu vermeiden oder zu verringern, kann ein solches Ventilglied mit einer zusätzlichen drucksicheren Schließfunktion versehen sein. Alternativ dazu kann das Ventilglied auch mit einem entsprechend kleinen Querschnitt versehen sein, der nur zu einem geringen Druckverlust beim Eintreibvorgang führt. Dabei kann der Umstand genutzt werden, dass der Rückstell- bzw. Kompressionsvorgang meist erheblich langsamer abläuft als der Verbrennungs- bzw. Eintreibvorgang. In a further possible embodiment of the invention, the valve member may be formed as an adjustable pressure relief valve. This allows, for example, a simple realization by means of a spring mechanism on the valve member. In order to avoid or reduce a partial blow-off of the higher combustion pressure after the ignition of the fuel gas mixture, such a valve member may be provided with an additional pressure-safe closing function. Alternatively, the valve member may be provided with a correspondingly small cross-section, which leads only to a small pressure loss during driving. In this case, the fact can be used that the restoring or compression process usually takes place considerably more slowly than the combustion or driving operation.
Bei einer zu den vorgenannten Ausführungsformen alternativen oder ergänzenden Lösung ist das Ventilglied als zumindest eine an dem Zylinder angeordnete, selektierbar verschließbare Öffnung ausgebildet. Im Fall des geöffneten Ventilglieds kann der Eintreibkolben kompressionsfrei bis zu der Öffnung bewegt werden. Nach dem Überfahren der Öffnung durch den Kolben beginnt dann die Kompression. Es versteht sich, dass mehrere Ventilglieder bzw. selektierbar verschließbare Öffnungen in der Längsrichtung des Zylinders hintereinander angeordnet sein können, so dass eine entsprechend mehrstufige Einstellung des Kompressionswegs bzw. des Überdrucks ermöglicht ist. Es kann sich bei dem Ventilglied aber auch um eine schlitzförmige Öffnung in der Zylinderwand handeln, die zum Beispiel mittels einer verschiebbaren Außenhülse stufenlos abdeckbar ist. In one alternative to the aforementioned embodiments or complementary solution, the valve member is formed as at least one arranged on the cylinder, selectable closable opening. In the case of the open valve member of the driving piston can be moved without compression to the opening. After passing the opening through the piston then begins the compression. It is understood that a plurality of valve members or selectably closable openings in the longitudinal direction of the cylinder can be arranged one behind the other, so that a corresponding multi-stage adjustment of the compression travel or the overpressure is possible. However, the valve member can also be a slot-shaped opening in the cylinder wall, which can be continuously covered, for example, by means of a displaceable outer sleeve.
Allgemein vorteilhaft kann das Ventilglied über eine elektronische Steuereinheit des Eintreibgerätes ansteuerbar sein. Alternativ kann es sich aber auch um eine mechanische Ansteuerung mit einer manuellen Bedienung handeln. Besonders einfach kann eine mechanische Ansteuerung mittels eines einstellbaren Überdruckventils oder mittels einer in der Zylinderwand vorgesehenen, selektierbar verschließbaren Öffnung realisiert werden. Bei einer allgemein bevorzugten Ausführungsform der Erfindung ist der Eintreibkolben zur Erzeugung des Überdrucks über einen elektrischen Antrieb verstellbar. Die mechanische Arbeit zur Kompression bzw. Aufladung des Brenngases auf den Überdruck wird dabei durch den Antrieb geleistet. Dies erlaubt eine hohe Frequenz von Setzvorgängen. Generally advantageous, the valve member can be controlled via an electronic control unit of the tacker. Alternatively, it may also be a mechanical control with a manual operation. Particularly simple mechanical activation can be realized by means of an adjustable pressure relief valve or by means provided in the cylinder wall, selectable closable opening. In a generally preferred embodiment of the invention, the driving piston for generating the overpressure is adjustable via an electric drive. The mechanical work to compress or charge the fuel gas to the overpressure is done by the drive. This allows a high frequency of setting operations.
Bei einer möglichen Ausführungsform der Erfindung ist zusätzlich ein weiteres Aufladeglied, bevorzugt ein elektrisch angetriebener Verdichter, zur Beaufschlagung der Brennkammer mit einem Überdruck des Brenngasgemisches vorgesehen. Ein solches Gerät verfügt demnach nicht nur über eine innere Aufladung mittels der Bewegung des Eintreibkolbens, sondern auch über eine externe Aufladung mittels des weiteren Aufladegliedes. Dies erlaubt bei Bedarf auch eine Aufladung mit einem noch höheren Überdruck, so dass eine besonders breite Einstellbarkeit der Eintreibenergie ermöglicht ist. In one possible embodiment of the invention, a further charging member, preferably an electrically driven compressor, is additionally provided for acting on the combustion chamber with an overpressure of the fuel gas mixture. Such a device therefore not only has an internal charge by means of the movement of the drive piston, but also via an external charge by means of the further charging member. If required, this also allows charging with an even higher overpressure, so that a particularly wide adjustability of the driving-in energy is made possible.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den nachfolgend beschriebenen Ausführungsbeispielen sowie aus den abhängigen Ansprüchen. Further advantages and features of the invention will become apparent from the embodiments described below and from the dependent claims.
Nachfolgend werden mehrere bevorzugte Ausführungsbeispiele der Erfindung beschrieben und anhand der anliegenden Zeichnungen näher erläutert. Fig. 1 zeigt eine schematische Schnittansicht eines erfindungsgemäßen Eintreibgerätes eines ersten Ausführungsbeispiels mit elektrisch angesteuertem Ventilglied im Bereich einer Brennkammer in einem geöffneten Zustand, Hereinafter, several preferred embodiments of the invention will be described and explained in more detail with reference to the accompanying drawings. 1 shows a schematic sectional view of a tacker according to the invention of a first embodiment with electrically actuated valve member in the region of a combustion chamber in an open state,
Fig. 2 zeigt das Eintreibgerät aus Fig. 1 in einem zweiten Betriebszustand nach  FIG. 2 shows the tacker of FIG. 1 in a second operating state
Schließen des Ventilglieds.  Closing the valve member.
Fig. 3 zeigt das Eintreibgerät aus Fig. 1 in einem dritten Betriebszustand zum Zeitpunkt einer Zündung. Fig. 3 shows the tacker of Fig. 1 in a third operating condition at the time of ignition.
Fig. 4 zeigt eine schematische Schnittansicht eines erfindungsgemäßen Eintreibgerätes eines zweiten Ausführungsbeispiels mit einstellbarem Druckbegrenzungsventil, 4 shows a schematic sectional view of a tacker according to the invention of a second embodiment with adjustable pressure relief valve,
Fig. 5 zeigt eine schematische Schnittansicht eines erfindungsgemäßen Eintreibgerätes eines dritten Ausführungsbeispiels mit einem Ventilglied im Bereich eines 5 shows a schematic sectional view of a tacker according to the invention of a third embodiment with a valve member in the region of a
Zylinders.  Cylinder.
Fig. 6 zeigt das Eintreibgerät aus Fig. 5, wobei das Ventilglied auf eine maximale  Fig. 6 shows the tacker of Fig. 5, wherein the valve member to a maximum
Eintreibenergie eingestellt ist. Das Eintreibgerät aus Fig. 1 ist ein handgeführtes Gerät, umfassend ein Gehäuse 1 und eine darin aufgenommene Brennkammer 2 mit einer Brennkammerwand. An die Brennkammer 2 grenzt ein Zylinder 3 mit einem darin geführten Eintreibkolben 4 an. Eine Sicherheitsmechanik des Gerätes umfasst ein Andruckgestänge mit einer Aufsetzhülse 5, die auf ein Werkstück (nicht dargestellt) aufgesetzt wird und gegen den Druck einer Feder (nicht dargestellt) eingedrückt wird. Nur in diesem Zustand kann ein Eintreibvorgang durch Zünden eines Brenngases in der Brennkammer 2 ausgelöst werden. Die Brennkammer 2 besteht dabei aus mehreren zueinander bewegbaren Brennkammerteilen (nicht dargestellt), die erst nach dem Eindrücken der Aufsetzhülse 5 über das Andruckgestänge zu einem geschlossenen Raum zur Aufnahme eines zündfähigen Brenngasgemisches kombiniert sind. Solche Bauarten von Brennkammern mit dem Ziel einer Sicherheitsverbesserung sind allgemein bekannt, zum Beispiel aus den eingangs genannten Druckschriften. In den vorliegenden schematischen Zeichnungen wurde daher auf die detaillierte Darstellung dieser Sicherheitsmechanik verzichtet. Driving energy is set. The tacker of Fig. 1 is a hand-held device comprising a housing 1 and a combustion chamber 2 received therein with a combustion chamber wall. Adjacent to the combustion chamber 2 is a cylinder 3 with a guided therein driving piston 4. A safety mechanism of the device comprises a Andruckgestänge with a Aufsetzhülse 5, which is placed on a workpiece (not shown) and against the pressure of a spring (not shown) is pressed. Only in this state, a driving operation can be triggered by igniting a fuel gas in the combustion chamber 2. The combustion chamber 2 consists of several mutually movable combustion chamber parts (not shown), which are combined only after pressing the attachment sleeve 5 via the Andruckgestänge to a closed space for receiving an ignitable fuel gas mixture. Such types of combustion chambers with the aim of improving safety are generally known, for example from the publications mentioned above. In the present schematic drawings, therefore, the detailed description of this safety mechanism has been omitted.
Ein zündfähiges Brenngasgemisch wird vorliegend mittels eines Brenngasspeichers 6 in die Brennkammer 2 eingebracht. Das Brenngas wird dabei im Zuge einer Rückstellung des Eintreibkolbens 4 auf einen Überdruck komprimiert. Der Eintreibkolben 4 wird bei seiner Rückstellung durch einen von einem Akku 7 versorgten, elektrischen Antrieb 8 angetrieben, der an einem Eintreibstößel 4a des Eintreibkolbens 4 angreift. An ignitable fuel gas mixture is presently introduced by means of a fuel gas storage 6 in the combustion chamber 2. The fuel gas is compressed in the course of a provision of the drive piston 4 to an overpressure. The drive piston 4 is driven in its return by a powered by a battery 7, electric drive 8, which engages a drive tappet 4a of the drive piston 4.
Das Brenngas wird über ein Dosierventil 9 von dem Brenngasspeicher 6 in die Luft der Brennkammer 2 eingebracht. Die Brenngasinjektion kann je nach Anforderungen in die noch nicht komprimierte, teilkomprimierte oder auch vollständig komprimierte Luft erfolgen. The fuel gas is introduced via a metering valve 9 from the fuel gas storage 6 into the air of the combustion chamber 2. Depending on the requirements, the fuel gas injection can take place in the not yet compressed, partially compressed or completely compressed air.
Im vollständig rückgestellten Zustand (siehe Fig. 3) wird der Eintreibkolben 4 durch einen Magnethalter 10 gegen den Überdruck in der Brennkammer gehalten. Bei beladener Brennkammer kann dann über einen handbetätigten Trigger 1 1 eine Zündung des Brenngasgemisches über eine Zündkerze 12 ausgelöst werden, so dass der Eintreibkolben 4 vorgetrieben wird und über den Eintreibstößel 4a ein Nagelglied (nicht dargestellt) aus einem Magazin 13 in das Werkstück eintreibt. Die Abgase des gezündeten und expandierten Brenngases können zum Ende des Weges des Eintreibkolbens über Auslassöffnungen 14 in den Außenraum eintreten. Der durch die Rückstellung des Eintreibkolbens erzielte Überdruck in der Brennkammer 2 kann mittels eines an der Brennkammer 2 angeordneten Ventilglieds 15 selektierbar eingestellt werden. Vorliegend ist das Ventilglied 15 als elektrisch betätigtes Schaltventil ausgelegt, das mit einer elektronischen Steuereinheit des Eintreibgerätes verbunden ist. Über eine Einstellung durch eine Bedienperson wird eine Eintreibenergie in einem gegebenen Rahmen vorgewählt. Hiervon abhängig wird das Ventilglied entweder dauerhaft geschlossen (maximale Kompression und Eintreibenergie) oder es wird erst nach einem bestimmten Hub des Eintreibkolbens auf seinem Rückstellweg geschlossen. In the fully reset state (see FIG. 3), the driving piston 4 is held by a magnet holder 10 against the overpressure in the combustion chamber. When loaded combustion chamber can then be triggered by a manually operated trigger 1 1 ignition of the fuel gas mixture via a spark plug 12, so that the driving piston 4 is driven and on the driving ram 4a a nail member (not shown) from a magazine 13 drives into the workpiece. The exhaust gases of the ignited and expanded fuel gas may enter the outer space via outlet openings 14 at the end of the travel of the drive piston. The overpressure in the combustion chamber 2 achieved by the return of the driving piston can be adjusted to be selectable by means of a valve member 15 arranged on the combustion chamber 2. In the present case, the valve member 15 is designed as an electrically operated switching valve which is connected to an electronic control unit of the tacker. Over a setting by an operator, a driving energy is preselected in a given frame. Depending on this, the valve member is either permanently closed (maximum compression and Eintreibenergie) or it is closed only after a certain stroke of the drive piston on its return path.
Im Zustand nach Fig. 1 befindet sich das Ventilglied 15 noch in einem geöffneten Zustand, während der Eintreibkolben bereits in Richtung der Brennkammer bewegt wird. Hierdurch entweicht Luft durch das Ventilglied 15 (Darstellung durch Pfeile) und es findet noch keine Kompression statt. In the state of FIG. 1, the valve member 15 is still in an open state, while the driving piston is already moved in the direction of the combustion chamber. As a result, air escapes through the valve member 15 (shown by arrows) and there is still no compression.
Im Zustand nach Fig. 2 wurde der Eintreibkolben etwa um seinen halben Hub bewegt. In dieser Stellung wird entsprechend der Selektion durch die Bedienperson das Ventilglied 15 geschlossen und der Aufbau des Überdrucks in der Brennkammer beginnt. Fig. 3 zeigt den vollständig rückgestellten Eintreibkolben 4, der noch an dem Magnethalter 10 anliegt, während der Zündvorgang durch Betätigen des Triggers 1 1 eingeleitet wird. In the state of FIG. 2, the drive piston has been moved about half its stroke. In this position, the valve member 15 is closed according to the selection by the operator and the structure of the overpressure in the combustion chamber begins. Fig. 3 shows the fully recovered driving piston 4, which still rests against the magnet holder 10, while the ignition process by pressing the trigger 1 1 is initiated.
Bei dem zweiten Ausführungsbeispiel gemäß Fig. 4 ist das Ventilglied 15 nicht wie im ersten Ausführungsbeispiel als elektrisch angesteuertes Schaltventil ausgebildet, sondern als einstellbares Überdruckventil bzw. Druckregelventil. Diese Ventilart erlaubt zum Beispiel auch eine rein mechanische Vorwahl des Überdrucks durch die Bedienperson. In the second embodiment shown in FIG. 4, the valve member 15 is not formed as in the first embodiment as an electrically controlled switching valve, but as an adjustable pressure relief valve or pressure control valve. This type of valve allows, for example, a purely mechanical preselection of the overpressure by the operator.
Je nach Vorspannung bzw. Einstellung des Überdruckventils erfolgt ein Öffnen, sobald der durch den Eintreibkolben erzielte Überdruck oberhalb der eingestellten Schwelle liegt. Depending on the bias or adjustment of the pressure relief valve opening takes place as soon as the overpressure achieved by the driving piston is above the set threshold.
Bevorzugt wird das Überdruckventil zudem vollständig geschlossen, wenn die Zündung des Brenngasgemisches erfolgt. Dies kann z.B. durch einen zweiten Schaltzustand oder ein zusätzliches, in Reihe geschaltetes Ventil realisiert sein (nicht dargestellt). Da der Expansionsvorgang des gezündeten Brenngases aber meist viel schneller erfolgt als der Kompressionsvorgang, kann es je nach Anforderungen aber auch ausreichend sein, das Überdruckventil mit einem entsprechend kleinen Austrittsquerschnitt zu dimensionieren. In addition, the overpressure valve is preferably completely closed when the ignition of the fuel gas mixture takes place. This can be realized, for example, by a second switching state or an additional valve connected in series (not shown). Since the expansion process of the ignited fuel gas but usually much faster than the Compression process, but it may also be sufficient depending on the requirements, to dimension the pressure relief valve with a correspondingly small outlet cross-section.
Bei den vorhergehenden Ausführungsbeispielen ist das Ventilglied 15 jeweils an der Brennkammer angeordnet bzw. unmittelbar mit dieser verbunden. Im nachfolgend beschriebenen, dritten Ausführungsbeispiel gemäß Fig. 5 bis Fig. 6 ist das Ventilglied 15 an dem Zylinder 3 angeordnet. In the preceding embodiments, the valve member 15 is respectively disposed on the combustion chamber and directly connected thereto. In the third exemplary embodiment according to FIGS. 5 to 6 described below, the valve member 15 is arranged on the cylinder 3.
Eine Wand des Zylinders 3 ist dazu mit mehreren, in der Längsrichtung des Zylinders beabstandet angeordneten Öffnungen 16 versehen. Ein Ventilschieber, vorliegend in Form einer Hülse 17, kann die Öffnungen 16 selektierbar verschließen. Dies führt dazu, dass der Eintreibkolben 4 je nach Stellung des Ventilschiebers 17 an verschiedenen Positionen mit der Kompression beginnt. In Fig. 5 ist der Ventilschieber 17 so positioniert, dass die der Brennkammer am nächsten positionierte Öffnung nicht verschlossen ist. Dies führt zu einer maximal späten Kompression des Eintreibkolbens auf seinem Rückstellweg und somit zu einem minimalen Überdruck. A wall of the cylinder 3 is provided with a plurality of spaced apart in the longitudinal direction of the cylinder openings 16. A valve spool, in the form of a sleeve 17 in the present case, can selectively close the openings 16. As a result, the driving piston 4 starts at different positions with the compression, depending on the position of the valve slide 17. In Fig. 5, the valve spool 17 is positioned so that the combustion chamber next positioned opening is not closed. This leads to a maximum late compression of the drive piston on its return path and thus to a minimum overpressure.
In Fig. 6 ist der Ventilschieber 17 so positioniert, dass sämtliche Öffnungen 16 überdeckt sind. Dies führt zu einer Kompression über den gesamten Weg des Eintreibkolbens und daher zu maximalem Überdruck und maximaler Eintreibenergie. In Fig. 6, the valve spool 17 is positioned so that all openings 16 are covered. This leads to compression over the entire travel of the driving piston and therefore to maximum overpressure and maximum driving energy.
Es versteht sich, dass je nach Anzahl und Anordnung der Öffnungen 16 beliebige Abstufungen der Eintreibenergie erzielt werden können. Durch eine in der Zylinderlängsrichtung geschlitzte Öffnung kann im Prinzip auch eine kontinuierliche Einstellung der Eintreibenergie erfolgen. It is understood that depending on the number and arrangement of the openings 16 any gradations of the driving energy can be achieved. By slotted in the cylinder longitudinal opening opening can be done in principle, a continuous adjustment of the driving.
Die einzelnen Merkmale der verschiedenen Ausführungsbeispiele können je nach The individual features of the various embodiments may vary depending on
Anforderungen sinnvoll miteinander kombiniert werden. Requirements are meaningfully combined with each other.

Claims

PATENTANSPRUECHE cLAIMS
1 . Eintreibgerät, umfassend 1 . A tacker comprising
einen in einem Zylinder (3) geführten Eintreibkolben (4) zum Eintreiben eines Nagelglieds in ein Werkstück, und  a guided in a cylinder (3) driving piston (4) for driving a nail member in a workpiece, and
eine an dem Eintreibkolben (4) angeordnete Brennkammer (2), die mit einem zündfähigen Brenngasgemisch befüllbar ist,  a combustion chamber (2) arranged on the driving piston (4) and capable of being filled with an ignitable fuel gas mixture,
wobei mittels einer Bewegung des Eintreibkolbens (4) ein Überdruck des Brenngasgemisches in der Brennkammer erzeugbar ist,  wherein by means of a movement of the drive piston (4) an overpressure of the fuel gas mixture in the combustion chamber can be generated,
dadurch gekennzeichnet,  characterized,
dass zumindest eines von beiden, die Brennkammer (2) oder der Zylinder (3), über ein Ventilglied (15) mit einem Außenraum verbunden ist, wobei der durch den Eintreibkolben erzeugte Überdruck des Brenngasgemisches mittels des Ventilglieds (15) selektierbar einstellbar ist.  in that at least one of the combustion chamber (2) and the cylinder (3) is connected to an external space via a valve member (15), the overpressure of the fuel gas mixture generated by the driving piston being selectably adjustable by means of the valve member (15).
2. Eintreibgerät nach Anspruch 1 , dadurch gekennzeichnet, dass das Ventilglied (15) als ein mit der Brennkammer (2) verbundenes Schaltventil ausgebildet ist. 2. A tacker according to claim 1, characterized in that the valve member (15) is designed as a with the combustion chamber (2) connected switching valve.
3. Eintreibgerät nach Anspruch 2, dadurch gekennzeichnet, dass eine Schaltung des Ventilglieds (15) in Abhängigkeit von einer Position des Eintreibkolbens (4) erfolgt. 3. A tacker according to claim 2, characterized in that a circuit of the valve member (15) in response to a position of the driving piston (4).
4. Eintreibgerät nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass eine Schaltung des Ventilglieds (15) in Abhängigkeit von einer Messung mittels eines Drucksensors erfolgt. 4. A tacker according to one of claims 2 or 3, characterized in that a circuit of the valve member (15) takes place in dependence on a measurement by means of a pressure sensor.
5. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ventilglied (15) als einstellbares Überdruckventil ausgebildet ist. 5. tacker according to one of the preceding claims, characterized in that the valve member (15) is designed as an adjustable pressure relief valve.
6. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ventilglied (15) als zumindest eine an dem Zylinder (3) angeordnete, selektierbar verschließbare Öffnung (16) ausgebildet ist. 6. A tacker according to one of the preceding claims, characterized in that the valve member (15) as at least one of the cylinder (3) arranged, selectable closable opening (16) is formed.
7. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ventilglied (15) über eine elektronische Steuereinheit des Eintreibgerätes ansteuerbar ist. Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Eintreibkolben (4) zur Erzeugung des Überdrucks über einen elektrischen Antrieb (8) verstellbar ist. 7. A tacker according to one of the preceding claims, characterized in that the valve member (15) via an electronic control unit of the tacker is controlled. A tacker according to one of the preceding claims, characterized in that the driving piston (4) for generating the overpressure via an electric drive (8) is adjustable.
Eintreibgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zusätzlich ein weiteres Aufladeglied, insbesondere ein elektrisch angetriebener Verdichter, zur Beaufschlagung der Brennkammer (2) mit einem Überdruck des Brenngasgemisches vorgesehen ist. A tacker according to any one of the preceding claims, characterized in that in addition a further Aufladeglied, in particular an electrically driven compressor, is provided for acting on the combustion chamber (2) with an overpressure of the fuel gas mixture.
EP16760514.6A 2015-09-14 2016-09-06 Driving device powered by combustion gas with valve member Active EP3349944B1 (en)

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PCT/EP2016/070923 WO2017045967A1 (en) 2015-09-14 2016-09-06 Fuel gas-fired driving-in tool having a valve member

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Publication number Priority date Publication date Assignee Title
TWI781941B (en) * 2016-07-29 2022-11-01 日商工機控股股份有限公司 nailing machine
TWI751176B (en) * 2016-08-31 2022-01-01 日商工機控股股份有限公司 Nailer, pressure regulator and nailing unit
EP4140651A1 (en) 2018-07-18 2023-03-01 Milwaukee Electric Tool Corporation Impulse driver
US11724368B2 (en) 2020-09-28 2023-08-15 Milwaukee Electric Tool Corporation Impulse driver

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010517B4 (en) 1990-04-02 2004-04-08 Hilti Ag Gas powered implement
DE10013270A1 (en) * 2000-03-17 2001-09-20 Krupp Berco Bautechnik Gmbh Fluid-driven hammer mechanism has striking piston made immobile if its movement exceeds certain setting
DE10260702B4 (en) * 2002-12-23 2014-01-30 Hilti Aktiengesellschaft Internal combustion setting device
DE10260704A1 (en) * 2002-12-23 2004-07-01 Hilti Ag Combustion-powered setting tool
DE102005000107B4 (en) * 2005-08-25 2014-03-13 Hilti Aktiengesellschaft Pneumatically operated setting tool
DE102005000149A1 (en) * 2005-11-04 2007-05-10 Hilti Ag Internal combustion setting device
DE102008000909A1 (en) * 2008-04-01 2009-10-08 Hilti Aktiengesellschaft Internal combustion setting device
US8550321B2 (en) 2008-05-21 2013-10-08 Poly Systems Pty Ltd Tool for driving fasteners
FR2965741B1 (en) 2010-10-08 2013-05-31 Prospection & Inventions PRE-PRESSURE FASTENING APPARATUS AND FIXING METHOD THEREFOR
DE102012206108A1 (en) * 2012-04-13 2013-10-17 Hilti Aktiengesellschaft tacker
US9381635B2 (en) * 2012-06-05 2016-07-05 Illinois Tool Works Inc. Fastener-driving tool including a fastening result detector
EP2826599A1 (en) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Control method and hand tool machine
EP3141348A1 (en) * 2015-09-14 2017-03-15 HILTI Aktiengesellschaft Driving device powered by combustion gas with valve member
US20180243891A1 (en) * 2015-09-14 2018-08-30 Hilti Aktiengesellschaft Fuel gas-fired driving-in tool with charging function

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WO2017045967A1 (en) 2017-03-23
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US20180236646A1 (en) 2018-08-23

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