EP1782925B1 - Combustion-driven fastener setting tool - Google Patents
Combustion-driven fastener setting tool Download PDFInfo
- Publication number
- EP1782925B1 EP1782925B1 EP06122664A EP06122664A EP1782925B1 EP 1782925 B1 EP1782925 B1 EP 1782925B1 EP 06122664 A EP06122664 A EP 06122664A EP 06122664 A EP06122664 A EP 06122664A EP 1782925 B1 EP1782925 B1 EP 1782925B1
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- EP
- European Patent Office
- Prior art keywords
- switch
- combustion chamber
- trigger
- setting tool
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002485 combustion reaction Methods 0.000 title claims description 62
- 239000000758 substrate Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 7
- 230000001960 triggered effect Effects 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
Definitions
- the present invention relates to a combustion-driven setting tool referred to in the preamble of claim 1. Art.
- Such setting devices have a combustion chamber in which a portion of liquefied petroleum gas or another vaporizable fuel with an oxidizing agent such. B. ambient air, is combustible.
- combustion energy is a, displaceably guided in a piston guide guided setting piston driven to drive a fastener into an object.
- the setting piston is returned to its original position at the combustion chamber.
- combustion-powered setting devices of the above type with thermal return of the setting piston the combustion chamber must be locked until the setting piston is returned to its original position. This lock is mechanically constructed and coupled to the trigger of the setting device.
- Such a generic combustion-powered setting tool which has a combustion chamber and a subsequent piston guide with a settling piston guided displaceably therein.
- the combustion chamber is bounded on the one hand by the setting piston in the axial direction and on the other hand by a cylinder head.
- An axially displaceable sleeve forms the side walls of the combustion chamber and simultaneously acts as a valve means, which cooperates with the cylinder head and can be opened and closed via the ventilation openings of the combustion chamber.
- the sleeve is connected to a Anpressmountler and is offset in a pressing of the setting device to an object with this in the axial direction.
- a switch By actuating an extractor or trigger present on the setting device, a switch is closed and closed generates electrical spark, which is located in the combustion chamber gas mixture such. As an air-fuel gas mixture, ignites and thus starts the combustion process. The setting piston is then accelerated and drives a fastener into the object. The return of the setting piston in its initial position via a prevailing in the combustion chamber after completion of the combustion process vacuum. The combustion chamber must remain closed until the setting piston is completely returned, for which purpose the sleeve or the valve means, which closes the combustion chamber, is locked when the trigger or trigger is pulled, even before the switch triggers the ignition. So that the combustion chamber is not opened too quickly after releasing the trigger, the US 5,909,836 a delay of the trigger movement, which is responsible for unlocking the sleeve or the valve means.
- a fastener pneumatic fastener comprising a cylinder disposed in a housing with a driving piston guided therein, a trigger valve for introducing high pressure air into the cylinder, a trigger switch, a safety switch, and an electronic control system.
- the electronic control system includes a solenoid valve to actuate the trigger valve and a microprocessor which monitors the trigger switch and safety switch on the data input side and drives the solenoid valve on the data output side.
- the microprocessor may include a timer that can set a time limit for the trigger switch or the safety switch or both.
- the object of the present invention is therefore to develop a setting tool of the aforementioned type, in which a triggering of the setting device in the lifted state with closed or sealed combustion chamber is not possible.
- a setting device having the features of claim 1. Accordingly, an electronic control unit and at least one associated with this initialization switch is provided, wherein the control unit, the electronic device functions such. As the ignition controls. The initialization switch is still operable before locking. The control unit enables ignition in the combustion chamber only when a period between switching of the initialization switch and switching of the trigger switch connected to the control unit is not longer than a predetermined target time. This prevents that the setting device can still be triggered when it has been pressed against a substrate and locked by partial actuation of the trigger.
- the defined by the target time window for triggering the ignition is chosen so short that a normal pulling the trigger for locking the inlet / outlet and to trigger the ignition by the directly or indirectly addressed via the trigger trigger switch is a time-delayed Trigger after a new lift off the ground with partially operated trigger but not.
- control unit includes a time comparator means for comparing the period between the switching of the initialization switch and the trigger switch with the target time.
- the time comparator can be z. B. may be formed as a capacitor circuit, wherein the set time may be specified over the discharge duration of capacitors.
- the time comparator means could also be embodied as a program running in a microprocessor, the setpoint time being stored in a memory and being retrievable there for comparison with the measured times.
- the initialization switch is designed as a trigger switch, which is switchable in dependence on the position of the trigger.
- the trigger switch does not have to be operated directly from the trigger, but can also be indirectly addressed by this, z. B. with the interposition of other mechanical or electronic elements.
- the target time is preferably in the range of about 300 ms to about 1000 ms.
- the initialization switch could also be designed as a contact pressure switch, which can be switched by way of a pressure sensor which can be moved displaceably in the region of a bolt guide.
- the set time must be slightly longer, since the time for pressing the setting tool to the substrate or the workpiece still has to be included.
- the trigger on a switching element which includes a first switching arm for the trigger switch, a second switching arm for the trigger switch and a blocking element of the locking device.
- FIGS. 1 to 5 an inventive hand-held, combustion-powered setting tool 10 is shown, which is operable with a vaporizable liquid or gaseous fuel, the z. B. is stored in a non-illustrated fuel reservoir.
- the setting tool 10 has a housing 11, in which a setting network is arranged, by means of which a fastening element, such as a nail, bolt or the like., Is in a substrate U can be driven when the setting tool 10 pressed against the substrate U or an object and is triggered by a located on the handle 36 of the setting device 10 deduction 30.
- ignition device is triggered, via which a contained in the combustion chamber 13 air-fuel mixture is ignited.
- the trigger 30 acts via a switching element 31, such.
- As a rocker switch with a trained as a trigger switch 21 initial switch and a release switch 22 together, which in turn are connected to a control unit 20 via lines not shown in the figures.
- the switching element 31 is z. b. pivotally held at a bearing 35.
- the setting network includes, inter alia, a combustible chamber 13 which can be clamped in a combustion chamber sleeve 12, a piston guide 17, in which a setting piston 16 is displaceably guided, and a bolt guide 18 for guiding a fastening element which, in a setting operation, projects beyond the forwardly moving setting end of the setting piston 16 a subsoil is driven.
- the combustion chamber sleeve 12, the piston guide 17 and the pin guide 18 are preferably arranged coaxially with each other.
- exhaust ports 26 At the pin guide 18 facing the end of the piston guide 17 are exhaust ports 26, via which a portion of the exhaust gases from the piston guide 17 flow can, if the setting piston 16 is in its end position facing away from the combustion chamber 13.
- the combustion chamber sleeve 12 is slidably mounted relative to the piston guide 17 and is elastically acted upon by at least one, not visible in the drawings, spring element in the direction of the pin guide 18 and to the collapsed position of the combustion chamber 13.
- An Anpressstrang 25 engages at one end to the combustion chamber sleeve 12, while its opposite end is fixed to a Anpress catalyst 28 which is slidably mounted on the pin guide 18, and the bolt guide 18 in the in Fig. 1 projected starting position of the setting device 10 surmounted.
- the combustion chamber sleeve 12 has a combustion chamber rear wall 14 on its end facing away from the piston guide 17.
- the combustion chamber sleeve 12 is embodied in one piece with the combustion chamber wall 14 here.
- the combustion chamber sleeve 12 may also be displaceable relative to the combustion chamber rear wall 14, wherein the combustion chamber rear wall 14 is then preferably arranged fixed to the housing.
- the discharge of exhaust gases from the combustion chamber 13 through at least one second opening 19 inlet / outlet assembly 40 which between the combustion chamber sleeve 12 and the combustion chamber side end of the piston guide 17 is formed.
- further means such as a fan, not shown in the figures, may be provided on the setting device 10.
- To the inlet / outlet assembly 40 in the embodiment shown here also includes the functioning as a valve means combustion chamber sleeve 12, via which the opening and closing of the openings 15, 19 is controlled, as will be explained below.
- Fig. 1 the setting device is shown in its rest or initial position in which the combustion chamber 13 is reduced to minimum size and in which the setting piston 16 is located with its piston head at the end of the piston guide 17 facing the combustion chamber 13.
- the pressure switch 23, the trigger switch 21 and the trigger switch 22 on the trigger 30 are unconfirmed.
- the inlet / outlet assembly 40 is in its first position, in which the openings 15, 19 are open.
- the Anpressconnectler When pressing the setting tool 10 to a substrate U (see. Fig. 2 ), the Anpressconnectler is offset in the direction of arrow 50. This movement is transmitted via the Anpressstrang 25 on the combustion chamber sleeve 12 with the combustion chamber rear wall 14 so that they are moved away from the piston guide 17, wherein the combustion chamber 13 is clamped, as seen from Fig. 2 is apparent.
- Through the openings 15 of the inlet / outlet assembly 40 air flows into the combustion chamber 13 until the first openings 15 are closed by means of sealing elements 29 on the housing 11 in the clamped position of the combustion chamber 13.
- the second opening 19 between the combustion chamber sleeve 12 and the piston guide 17 is in this clamped position of the combustion chamber 13 via a, z. B.
- the pressure switch 23 is run over by the pressure sleeve 28 and is actuated by the latter. He gives a switching signal to the control unit 20 at a time t0.
- the switching signal can be z. B. be generated by the closure of a circuit.
- the control unit 20 is then turned on. During the Aufspannvorganges the combustion chamber 13 further flows through a fuel fuel supply not shown in the figures from a fuel reservoir into the combustion chamber 13, wherein this can be done electronically or mechanically controlled.
- a belonging to a total of 37 locking means associated locking element 34 is moved to the switching element 31 at a time t2 in a blocking position 54 on the combustion chamber sleeve 13.
- the inlet / outlet device 40 is thereby locked in its second position, in which the combustion chamber 13 is sealed.
- the ignition 24 is only released by the control unit 20 and a setting process is triggered when one of the following conditions are met by the received switching signals of the press-on switch 23 and the trigger switch 22 or the trigger switch 21 and the trigger switch 22: t3 - t0 ⁇ tmax1 or t3 - t1 ⁇ tmax2.
- tmax1 and tmax2 stored in the control unit 20 or stored values for target times, which may have passed between the times t3 and t0 or t3 and t1, so that the control unit 20 still triggers an ignition 24.
- the control unit 20 For checking the first setpoint time tmax1 and the second setpoint time tmax2 with the time periods lying between t3 and t0 or t3 and t1, the control unit 20 includes a time comparator means 120.
- the time comparator means 120 determines that the conditions t3 - t0 ⁇ tmax1 or t3 - t1 ⁇ tmax2 are not met, then the control unit 20, no ignition 24 is triggered. In this way, it can be prevented that a user lifts off the setting tool 10 after locking the combustion chamber sleeve 12 designed as a valve means and can still release it.
- the time comparator 120 may, for. B. be formed by a capacitor circuit in which the target time on the discharge or charging time of capacitors of the circuit are defined or deposited.
- the time comparator 120 could also be designed as a running in a microprocessor program, the target time is stored in a memory and there is retrievable for comparison with the measured times.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
Die vorliegende Erfindung betrifft ein brennkraftbetriebenes Setzgerät der im Oberbegriff des Patentanspruchs 1 genannten Art.The present invention relates to a combustion-driven setting tool referred to in the preamble of claim 1. Art.
Derartige Setzgeräte weisen eine Brennkammer auf, in der eine Portion Flüssiggas oder ein anderer verdampfbarer Brennstoff mit einem Oxidationsmittel, wie z. B. Umgebungsluft, verbrennbar ist.Such setting devices have a combustion chamber in which a portion of liquefied petroleum gas or another vaporizable fuel with an oxidizing agent such. B. ambient air, is combustible.
Mittels der Verbrennungsenergie wird ein, in einer Kolbenführung versetzbar geführter Setzkolben angetrieben um ein Befestigungselement in einen Gegenstand einzutreiben. Nach erfolgtem Eintreibvorgang wird der Setzkolben wieder in seine Ausgangsstellung an der Brennkammer zurückgefahren. Bei brennkraftbetriebenen Setzgeräten der oben genannten Art mit thermischer Rückführung des Setzkolbens muss die Brennkammer verriegelt werden, bis der Setzkolben in seine Ausgangsstellung zurückgefahren ist. Diese Verriegelung ist mechanisch aufgebaut und an den Abzug des Setzgerätes gekoppelt.By means of the combustion energy is a, displaceably guided in a piston guide guided setting piston driven to drive a fastener into an object. After the driving operation, the setting piston is returned to its original position at the combustion chamber. In combustion-powered setting devices of the above type with thermal return of the setting piston, the combustion chamber must be locked until the setting piston is returned to its original position. This lock is mechanically constructed and coupled to the trigger of the setting device.
Aus der
Hierbei ist es von Nachteil, dass es theoretisch möglich ist, das Setzgerät an einen Untergrund anzupressen, das Ventilmittel über den Trigger zu verriegeln, ohne das Setzgerät auszulösen und das Setzgerät dann wieder vom Untergrund abzuheben und durch weiteres Ziehen des Triggers auszulösen.It is disadvantageous that it is theoretically possible to press the setting device to a substrate to lock the valve means on the trigger, without triggering the setting device and then lift the setting device again from the ground and trigger by further pulling the trigger.
Aus der
Die Aufgabe der vorliegenden Erfindung liegt daher darin, ein Setzgerät der vorgenannten Art zu entwickeln, bei dem ein Auslösen des Setzgerätes in abgehobenem Zustand bei geschlossener bzw. abgedichteter Brennkammer nicht möglich ist.The object of the present invention is therefore to develop a setting tool of the aforementioned type, in which a triggering of the setting device in the lifted state with closed or sealed combustion chamber is not possible.
Die erfindungsgemässe Aufgabe wird durch ein Setzgerät mit den Merkmalen von Anspruch 1 gelöst. Demnach ist eine elektronische Steuereinheit und wenigstens ein mit dieser verbundener Initialisierungsschalter vorgesehen, wobei die Steuereinheit die elektronischen Gerätefunktionen, wie z. B. die Zündung, steuert. Der Initialisierungsschalter ist dabei noch vor der Verriegelung betätigbar. Die Steuereinheit gibt eine Zündung in der Brennkammer nur dann frei, wenn ein Zeitraum zwischen einem Schalten des Initialisierungsschalters und einem Schalten des mit der Steuereinheit verbundenen Auslöseschalters nicht länger als eine vorgegebene Sollzeit ist. Hierdurch wird verhindert, dass das Setzgerät noch ausgelöst werden kann, wenn es an einen Untergrund angepresst und durch teilweise Betätigung des Abzugs verriegelt wurde. Das durch die Sollzeit definierte Zeitfenster für ein Auslösen der Zündung ist dabei so kurz gewählt, dass ein normales Durchziehen des Abzugs zum Verriegeln der Einlass- / Auslasseinrichtung und zum Auslösen der Zündung durch den direkt oder indirekt über den Abzug angesprochenen Auslöseschalter möglich ist, ein zeitverzögertes Auslösen nach einem erneuten Abheben vom Untergrund bei teilweise betätigtem Abzug jedoch nicht.The object of the invention is achieved by a setting device having the features of claim 1. Accordingly, an electronic control unit and at least one associated with this initialization switch is provided, wherein the control unit, the electronic device functions such. As the ignition controls. The initialization switch is still operable before locking. The control unit enables ignition in the combustion chamber only when a period between switching of the initialization switch and switching of the trigger switch connected to the control unit is not longer than a predetermined target time. This prevents that the setting device can still be triggered when it has been pressed against a substrate and locked by partial actuation of the trigger. The defined by the target time window for triggering the ignition is chosen so short that a normal pulling the trigger for locking the inlet / outlet and to trigger the ignition by the directly or indirectly addressed via the trigger trigger switch is a time-delayed Trigger after a new lift off the ground with partially operated trigger but not.
Günstig ist es ferner, wenn die Steuereinheit ein Zeitcomparatormittel zum Vergleichen des Zeitraums zwischen dem Schalten des Initialisierungsschalters und des Auslöseschalters mit der Sollzeit beinhaltet. Eine Überwachung des Zeitraums zwischen dem Schalten des Initialisierungsschalters und des Auslöseschalters ist so leicht möglich. Das Zeitcomparatormittel kann dabei z. B. als Kondensatorschaltung ausgebildet sein, wobei die Sollzeit über die Entladedauer von Kondensatoren vorgegeben sein kann. Das Zeitcomparatormittel könnte aber auch als ein in einem Mikroprozessor ablaufendes Programm ausgebildet sein, wobei die Sollzeit in einem Speicher hinterlegt und dort zum Vergleich mit den gemessenen Zeiten abrufbar ist.It is also advantageous if the control unit includes a time comparator means for comparing the period between the switching of the initialization switch and the trigger switch with the target time. A monitoring of the period between the switching of the initialization switch and the trigger switch is so easily possible. The time comparator can be z. B. may be formed as a capacitor circuit, wherein the set time may be specified over the discharge duration of capacitors. However, the time comparator means could also be embodied as a program running in a microprocessor, the setpoint time being stored in a memory and being retrievable there for comparison with the measured times.
Von Vorteil ist es dabei, wenn der Initialisierungsschalter als Abzugsschalter ausgebildet ist, der in Abhängigkeit von der Lage des Abzugs schaltbar ist. Der Abzugsschalter muss dazu nicht direkt vom Abzug betätigt werden, sondern kann auch mittelbar von diesem angesprochen werden, z. B. unter Zwischenschaltung weiterer mechanischer oder elektronischer Elemente. Durch diese Massnahme kann direkt die Zeitdauer mit der Sollzeit verglichen werden, die der Anwender benötigt, um den Abzug vollständig durchzuziehen, wodurch eine sehr hohe Sicherheit erreicht wird. Die Sollzeit liegt hierbei vorzugsweise im Bereich von ca. 300 ms bis ca. 1000 ms.It is advantageous if the initialization switch is designed as a trigger switch, which is switchable in dependence on the position of the trigger. The trigger switch does not have to be operated directly from the trigger, but can also be indirectly addressed by this, z. B. with the interposition of other mechanical or electronic elements. By this measure, it is possible to directly compare the time duration with the target time that the user needs to fully pull the trigger, whereby a very high security is achieved. The target time is preferably in the range of about 300 ms to about 1000 ms.
Alternativ könnte der Initialisierungsschalter auch als Anpressschalter ausgebildet sein, der über einen im Bereich einer Bolzenführung versetzbar geführten Anpressfühler schaltbar ist. Hier ist die Sollzeit etwas länger zu bemessen sein, da die Zeit für das Anpressen des Setzgerätes an den Untergrund bzw. das Werkstück noch mit eingerechnet sein muss.Alternatively, the initialization switch could also be designed as a contact pressure switch, which can be switched by way of a pressure sensor which can be moved displaceably in the region of a bolt guide. Here, the set time must be slightly longer, since the time for pressing the setting tool to the substrate or the workpiece still has to be included.
In einer technisch einfach auszuführenden Ausgestaltung der Erfindung weist der Abzug ein Schaltelement auf, das einen ersten Schaltarm für den Abzugsschalter, einen zweiten Schaltarm für den Auslöseschalter und ein Sperrelement der Verriegelungseinrichtung beinhaltet.In a technically simple embodiment of the invention, the trigger on a switching element, which includes a first switching arm for the trigger switch, a second switching arm for the trigger switch and a blocking element of the locking device.
Weitere Vorteile und Massnahmen der Erfindung ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung und den Zeichnungen. In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt.Further advantages and measures of the invention will become apparent from the dependent claims, the following description and the drawings. In the drawings, the invention is shown in one embodiment.
Es zeigen:
- Fig. 1
- ein erfindungsgemässes Setzgerät in der Ausgangsstellung im Längsschnitt,
- Fig. 2
- das Setzgerät aus
Fig. 1 in angepresster Stellung, - Fig. 3
- das Setzgerät aus
Fig. 1 in angepresster Stellung mit dem Abzug in einer ersten betätigten Stellung, - Fig. 4
- das Setzgerät aus
Fig. 1 in angepresster Stellung mit dem Abzug in einer zweiten betätigten Stellung, - Fig. 5
- das Setzgerät aus
Fig. 1 in angepresster Stellung mit dem Abzug in vollständig betätigter Stellung.
- Fig. 1
- an inventive setting device in the starting position in longitudinal section,
- Fig. 2
- the setting tool off
Fig. 1 in pressed position, - Fig. 3
- the setting tool off
Fig. 1 in pressed position with the trigger in a first actuated position, - Fig. 4
- the setting tool off
Fig. 1 in pressed position with the trigger in a second actuated position, - Fig. 5
- the setting tool off
Fig. 1 in pressed position with the trigger in fully actuated position.
In den
Das Setzgerät 10 weist ein Gehäuse 11 auf, in dem ein Setzwerk angeordnet ist, mittels dessen ein Befestigungselement, wie ein Nagel, Bolzen oder dgl., in einen Untergrund U eintreibbar ist, wenn das Setzgerät 10 an den Untergrund U bzw. einen Gegenstand angepresst und über einen am Handgriff 36 des Setzgerätes 10 befindlichen Abzug 30 ausgelöst wird. Über den Abzug 30 ist dabei eine hier nicht zeichnerisch dargestellte Zündeinrichtung auslösbar, über die ein in der Brennkammer 13 enthaltenes Luft-Brennstoffgemisch zündbar ist. Der Abzug 30 wirkt dazu über ein Schaltelement 31, wie z. B. einer Schaltwippe, mit einem als Abzugsschalter 21 ausgebildeten Initialschalter und einem Auslöseschalter 22 zusammen, die ihrerseits mit einer Steuereinheit 20 über in den Figuren nicht wiedergegebene Leitungen verbunden sind. Das Schaltelement 31 ist dabei z. b. an einer Lagerstelle 35 schwenkbar gehalten. Eine Quelle für elektrische Energie, wie z. B. eine oder mehrere Batterien, ist ebenfalls vorgesehen, in den Figuren aber nicht dargestellt.The
Zum Setzwerk gehören u. a. eine in einer Brennkammerhülse 12 aufspannbare Brennkammer 13, eine Kolbenführung 17, in der ein Setzkolben 16 verschieblich geführt ist und eine Bolzenführung 18 zur Führung eines Befestigungselementes, welches bei einem Setzvorgang über das sich nach vorne bewegende setzrichtungsseitige Ende des Setzkolbens 16 in einen Untergrund eingetrieben wird. Die Brennkammerhülse 12, die Kolbenführung 17 und die Bolzenführung 18 sind dabei vorzugsweise koaxial zueinander angeordnet. An dem der Bolzenführung 18 zugewandten Ende der Kolbenführung 17 liegen Auspufföffnungen 26, über die ein Teil der Abgase aus der Kolbenführung 17 ausströmen kann, wenn der Setzkolben 16 sich in seiner der Brennkammer 13 abgewandten Endstellung befindet.The setting network includes, inter alia, a
in dem vorliegenden Ausführungsbeispiel ist die Brennkammerhülse 12 gegenüber der Kolbenführung 17 verschieblich gelagert und wird über wenigstens ein, in den Zeichnungen nicht sichtbares, Federelement in Richtung auf die Bolzenführung 18 bzw. auf die kollabierte Stellung der Brennkammer 13 elastisch beaufschlagt. Ein Anpressstrang 25 greift an einem Ende an der Brennkammerhülse 12 an, während sein gegenüberliegendes Ende an einem Anpressfühler 28 festgelegt ist, der verschieblich auf der Bolzenführung 18 angeordnet ist, und der die Bolzenführung 18 in der in
Das Einbringen von Luft in die Brennkammer 13 erfolgt über wenigstens eine erste Öffnung 15 einer Einlass- / Auslassanordnung 40 in der Brennkammerrückwand 14. Das Ausbringen von Abgasen aus der Brennkammer 13 erfolgt durch wenigstens eine zweite Öffnung 19 Einlass- / Auslassanordnung 40 die zwischen der Brennkammerhülse 12 und dem brennkammerseitigen Ende der Kolbenführung 17 ausgebildet ist. Um eine Luftströmung von der ersten Öffnung 15 zur zweiten Öffnung 19 zum Spülen der Brennkammer 13 zu erzeugen, können an dem Setzgerät 10 weitere Mittel, wie etwa ein in den Figuren nicht dargestellter Ventilator, vorgesehen sein. Zu der Einlass- / Auslassanordnung 40 gehört in dem hier dargestellten Ausführungsbeispiel auch die als Ventilmittel fungierende Brennkammerhülse 12, über die das Öffnen und Schliessen der Öffnungen 15, 19 gesteuert wird, wie nachfolgend noch erläutert werden wird.The introduction of air into the
In
Beim Anpressen des Setzgerätes 10 an einen Untergrund U (vgl.
In der aus
Nach einer weiteren aus
In der aus
Die Zündung 24 wird von der Steuereinheit 20 aber nur freigegeben und ein Setzvorgang ausgelöst, wenn eine der folgende Bedingungen durch die eingegangenen Schaltsignale des Anpressschalters 23 und des Auslöseschalters 22 oder des Abzugsschalters 21 und des Auslöseschalters 22 erfüllt werden:
t3 - t0 ≤ tmax1 oder t3 - t1 ≤ tmax2.
Hierbei sind tmax1 und tmax2 in der Steuereinheit 20 hinterlegte bzw. gespeicherte Werte für Sollzeiten, die zwischen den Zeitpunkten t3 und t0 bzw. t3 und t1 vergangen sein dürfen, damit die Steuereinheit 20 noch eine Zündung 24 auslöst. Für die Überprüfung der ersten Sollzeit tmax1 und der zweiten Sollzeit tmax2 mit den zwischen t3 und t0 bzw. t3 und t1 liegenden Zeitspannen beinhaltet die Steuereinheit 20 ein Zeitcomparatormittel 120. Stellt das Zeitcomparatormittel 120 also fest, dass die Bedingungen t3 - t0 ≤ tmax1 oder t3 - t1 ≤ tmax2 nicht erfüllt sind, dann wird von der Steuereinheit 20 keine Zündung 24 ausgelöst. Hierdurch kann verhindert werden, dass ein Anwender nach dem Verriegeln der als Ventilmittel ausgebildeten Brennkammerhülse 12 das Setzgerät 10 abhebt und noch auslösen kann.However, the
t3 - t0 ≤ tmax1 or t3 - t1 ≤ tmax2.
Here, tmax1 and tmax2 stored in the
Es könnte an dem Setzgerät auch nur ein Initialisierungsschalter vorgesehen sein und dabei im Setzgerät nur die Überprüfung einer Sollzeit vorgenommen werden.It could be provided on the setting tool and only one initialization switch while only setting a target time to be made in the setting device.
Das Zeitcomparatormittel 120 kann z. B. durch eine Kondensatorschaltung gebildet sein, bei der die Sollzeit über die Entlade- oder Aufladezeit von Kondensatoren der Schaltung festgelegt bzw. hinterlegt sind.The
Das Zeitcomparatormittel 120 könnte aber auch als ein in einem Mikroprozessor ablaufendes Programm ausgebildet sein, wobei die Sollzeit in einem Speicher hinterlegt und dort zum Vergleich mit den gemessenen Zeiten abrufbar ist.However, the
Claims (5)
- Combustion-powered fastener setting tool for driving in fastening elements such as nails, bolts or pins into a substrate, comprising a combustion chamber (13) for combustion of a gas mixture, having an inlet/outlet arrangement (40) for opening the combustion chamber (13) in a first position and for closing the combustion chamber (13) in a second position, wherein the inlet/outlet arrangement (40) comprises a valve means for reversible transfer of the inlet/outlet arrangement (40) from the first position into the second position, and comprising a locking device (37) for locking the valve means in the second position of the inlet/outlet arrangement (40), said locking device (37) being actuatable via a trigger (30), and comprising a release switch (22) for releasirg an ignition in the combustion chamber (13), characterised in that an electronic control unit (20) and at least one initialising switch connected thereto are provided, and that the control unit (20) only permits an ignition in the combustion chamber (13) when a time period between switching the initialising switch and switching the release switch (22) connected to the control unit (20) is not longer than a pre-determined target time.
- Fastener setting tool according to claim 1, characterised in that the control unit comprises a time comparator means (120) for comparing the time peiiod between the switching of the initialising switch and the release switch (22) with the target time.
- Fastener setting tool according to claim 1 or 2, characterised in that the initialising switch is configured as a trigger switch (21) which is switchable depending on the position of the trigger (30).
- Fastener setting tool according to one of the claims 1 to 3, characterised in that the initialising switch is configured as a pressing-on switch (23) which is switchable via a pressing-on feeler (28) which is displaceably guided in the region of a bolt guide (18).
- Fastener setting tool according to one of the claims 1 to 3, characterised in that the trigger (30) comprises a switch element (31) which comprises a first arm (32) for the release switch (22), a second arm (33) for the trigger switch (21), and a blocking element (34) of the locking device (37).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005000149A DE102005000149A1 (en) | 2005-11-04 | 2005-11-04 | Internal combustion setting device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1782925A1 EP1782925A1 (en) | 2007-05-09 |
EP1782925B1 true EP1782925B1 (en) | 2010-01-13 |
Family
ID=37709284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06122664A Active EP1782925B1 (en) | 2005-11-04 | 2006-10-20 | Combustion-driven fastener setting tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US7284511B2 (en) |
EP (1) | EP1782925B1 (en) |
JP (1) | JP5156218B2 (en) |
DE (2) | DE102005000149A1 (en) |
ES (1) | ES2338143T3 (en) |
Families Citing this family (22)
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US7673779B2 (en) * | 2004-02-09 | 2010-03-09 | Illinois Tool Works Inc. | Combustion chamber distance control combustion-powered fastener-driving tool |
EP1777040B1 (en) * | 2005-10-19 | 2013-01-16 | Makita Corporation | Power tool |
CN101680362A (en) * | 2007-04-05 | 2010-03-24 | 雷神萨科斯公司 | Rapid-fire rapid-response power conversion system |
JP4945359B2 (en) * | 2007-07-26 | 2012-06-06 | 株式会社マキタ | Combustion type driving tool |
DE102008000909A1 (en) * | 2008-04-01 | 2009-10-08 | Hilti Aktiengesellschaft | Internal combustion setting device |
US8336749B2 (en) * | 2009-03-31 | 2012-12-25 | Illinois Tool Works Inc. | Single switched dual firing condition combustion nailer |
DK2491233T3 (en) * | 2009-10-23 | 2018-01-02 | Joseph S Adams | Gas powered tool engine |
JP5579594B2 (en) * | 2010-12-28 | 2014-08-27 | 新電元工業株式会社 | Control circuit |
US9486906B2 (en) | 2012-05-11 | 2016-11-08 | Illinois Tool Works Inc. | Lockout for fastener-driving tool |
JP2014054690A (en) | 2012-09-12 | 2014-03-27 | Max Co Ltd | Impact tool |
EP2826600A1 (en) * | 2013-07-16 | 2015-01-21 | HILTI Aktiengesellschaft | Control method and hand tool machine |
EP2826601A1 (en) * | 2013-07-16 | 2015-01-21 | HILTI Aktiengesellschaft | Control method and hand tool machine |
EP2826599A1 (en) * | 2013-07-16 | 2015-01-21 | HILTI Aktiengesellschaft | Control method and hand tool machine |
EP2851158A1 (en) * | 2013-09-19 | 2015-03-25 | HILTI Aktiengesellschaft | Driving device with heated pneumatic reservoir |
EP2851157A1 (en) * | 2013-09-19 | 2015-03-25 | HILTI Aktiengesellschaft | Driving device with pneumatic storage |
EP3034238A1 (en) * | 2014-12-19 | 2016-06-22 | HILTI Aktiengesellschaft | Driving device with adjustable combustion chamber |
EP3141347A1 (en) * | 2015-09-14 | 2017-03-15 | HILTI Aktiengesellschaft | Driving device powered by combustion gas with valve member |
EP3349946B1 (en) * | 2015-09-14 | 2020-08-05 | Hilti Aktiengesellschaft | Driving device powered by combustion gas with loading |
EP3184249A1 (en) * | 2015-12-22 | 2017-06-28 | HILTI Aktiengesellschaft | Driving device powered by combustion gas with loading |
FR3045784B1 (en) * | 2015-12-18 | 2019-03-22 | Illinois Tool Works Inc | METHOD FOR CONTROLLING THE ACTUATION OF A GAS FASTENING TOOL AND CORRESPONDING DEVICE |
US11065749B2 (en) | 2018-03-26 | 2021-07-20 | Tti (Macao Commercial Offshore) Limited | Powered fastener driver |
US11130221B2 (en) | 2019-01-31 | 2021-09-28 | Milwaukee Electric Tool Corporation | Powered fastener driver |
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US3964659A (en) * | 1975-03-12 | 1976-06-22 | Senco Products, Inc. | Safety firing control means for a fluid operated tool |
US4074844A (en) * | 1977-01-17 | 1978-02-21 | Olin Corporation | Gravity feed hot top tool |
US4298072A (en) * | 1979-08-31 | 1981-11-03 | Senco Products, Inc. | Control arrangement for electro-mechanical tool |
US4679719A (en) * | 1985-12-27 | 1987-07-14 | Senco Products, Inc. | Electronic control for a pneumatic fastener driving tool |
CA2179524A1 (en) * | 1994-10-21 | 1996-05-02 | Charles J. Moorman | Pneumatic fastener driving tool and an electronic control system therefor |
US5909836A (en) * | 1997-10-31 | 1999-06-08 | Illinois Tool Works Inc. | Combustion powered tool with combustion chamber lockout |
DE10032310C2 (en) * | 2000-07-04 | 2003-07-17 | Hilti Ag | Portable, combustion-powered working device, in particular setting device for fastening elements, and method for its operational control |
DE10135031C2 (en) * | 2001-07-18 | 2003-08-14 | Hilti Ag | Portable, combustion-powered working tool, in particular setting tool for fastening elements |
JP4151346B2 (en) * | 2002-08-09 | 2008-09-17 | 日立工機株式会社 | Combustion type driving tool |
US7150139B1 (en) * | 2003-03-19 | 2006-12-19 | Lund And Company Invention, L.L.C. | Lawnmower utilizing hydrogen from the electrolysis of water |
JP2004314263A (en) * | 2003-04-18 | 2004-11-11 | Hitachi Koki Co Ltd | Combustion type power tool |
-
2005
- 2005-11-04 DE DE102005000149A patent/DE102005000149A1/en not_active Withdrawn
-
2006
- 2006-10-20 EP EP06122664A patent/EP1782925B1/en active Active
- 2006-10-20 DE DE502006005900T patent/DE502006005900D1/en active Active
- 2006-10-20 ES ES06122664T patent/ES2338143T3/en active Active
- 2006-10-31 US US11/591,045 patent/US7284511B2/en active Active
- 2006-11-02 JP JP2006298930A patent/JP5156218B2/en active Active
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JP2007125692A (en) | 2007-05-24 |
EP1782925A1 (en) | 2007-05-09 |
JP5156218B2 (en) | 2013-03-06 |
ES2338143T3 (en) | 2010-05-04 |
DE502006005900D1 (en) | 2010-03-04 |
US20070101954A1 (en) | 2007-05-10 |
DE102005000149A1 (en) | 2007-05-10 |
US7284511B2 (en) | 2007-10-23 |
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