EP3184253A1 - Combustion-driven setting tool and method for operating such a setting tool - Google Patents

Abstract

The invention relates to a combustion-powered setting tool (1) for driving fastening elements into a substrate, having at least one main combustion chamber (6) for a fuel, with a driving piston (10) which can be expanded via expandable gases from the main combustion chamber (6) in a setting direction (15 ) is drivable, and with an antechamber (25), which is associated with an ignition device (26) and in which before the ignition of a fuel-air mixture in the main combustion chamber (6) acting on the main combustion chamber (6) pressure can be built up. In order to improve the effectiveness and / or the functionality when driving fasteners with the combustion-powered setting tool (1), the prechamber (25) has at least two venting connections (108, 109) spaced apart in an axial direction and having passage openings (31, 32, 111, 112) ), which can be shared together to allow rapid venting of the prechamber (25).

Description

Technical area

The invention relates to a combustion-powered setting tool for driving fasteners into a substrate, with at least one main combustion chamber for a fuel, with a driving piston which is driven via expandable gases from the main combustion chamber in a setting direction, and with an antechamber, which is associated with an ignition device and in which a pressure acting on the main combustion chamber pressure before the ignition of a fuel-air mixture in the main combustion chamber is buildable. The invention further relates to a method for operating such a setting device.

State of the art

From the German patent application DE 10 32 035 A1 a combustion-powered setting tool for driving fasteners into a substrate is known, comprising at least one main combustion chamber for a fuel, with a piston mounted in a piston guide drive piston, which is driven by expanding gases from the main combustion chamber in the setting direction, and with a prechamber, in front of the Ignition of a fuel-air mixture in the main combustion chamber, a pressure acting on the main combustion chamber pressure is buildable, wherein the pre-chamber of one of the main combustion chamber facing away from the underside of the drive piston located in its initial position subsequent space is formed within the piston guide, and wherein the prechamber via a Passage is at least temporarily in communication with the main combustion chamber, wherein in the main combustion chamber, a means for detecting the pressure is provided, which cooperates with the ignition device for the main combustion chamber. From the German patent application DE 42 43 36 17 A1 is a portable, combustion-powered working device, in particular a setting device for fastening elements known, with a cylindrical combustion chamber for combustion of an air-fuel mixture, whereby a plunger is driven via a piston guided by the combustion chamber cylinder, wherein provided with the combustion chamber a lower surface of the piston in connection with the pre-chamber in that an ignition-induced combustion process of an air-fuel mixture can be triggered for essentially isentropic compression of the air-fuel mixture in the combustion chamber.

Presentation of the invention

The object of the invention is the effectiveness and / or functionality in driving fasteners with a combustion-powered setting tool, with at least one main combustion chamber for a fuel, with a driving piston, which is driven via expandable gases from the main combustion chamber in a setting direction, and with a Prechamber, which is associated with an ignition device and in which a force acting on the main combustion chamber pressure before the ignition of a fuel-air mixture in the main combustion chamber can be built to improve.

The object is with a combustion-powered setting tool for driving fasteners into a substrate, with at least one main combustion chamber for a fuel, with a driving piston which can be driven via expandable gases from the main combustion chamber in a setting direction, and with an antechamber, which is associated with an ignition device and in which prior to the ignition of a fuel-air mixture in the main combustion chamber, a pressure acting on the main combustion chamber can be built up, achieved in that the pre-chamber has at least two spaced apart in an axial direction vent connections with passage openings, which are in particular jointly closed and released can allow for quick venting of the antechamber. The term axial refers to a longitudinal axis or axis of movement of the drive piston. The drive piston is preferably designed substantially rotationally symmetrical. During operation of the combustion-powered setting device, the driving piston is guided to be movable back and forth in the direction of its longitudinal axis. Axial means in the direction or parallel to the axis of movement of the driving piston. The passage openings of the vent connections preferably extend in radial directions, ie transversely to the longitudinal axis of the drive piston.

A preferred embodiment of the combustion-powered setting tool is characterized in that a first vent connection in the axial direction is spaced farther from the main combustion chamber than a second vent connection. The main combustion chamber is preferably arranged coaxially with the prechamber. An end of the antechamber facing away from the main combustion chamber is also referred to as a seating end. An extremely fast movement of the driving piston during operation of the setting device is also referred to as piston flight. The first vent connection is advantageously used to provide a large vent cross-section as soon as the antechamber is to be flushed by a piston flight. About both vent connections, the waste gas can be forced out during operation of the setting device on the Kolbenflugweg. The second vent connection advantageously serves to blow off the residual gases located in the prechamber in a first piston phase of flight. Due to the two vent connections, the effective cross-section for the venting of the antechamber can be significantly increased. In a second piston flight phase, when a piston head or piston plate has run over the second vent connection, the combustion gases of the main combustion chamber can be blown off via the vent cross section of the second vent connection. As a result, a thermal piston return by vacuum formation in the main combustion chamber is made possible in a simple manner.

A further preferred embodiment of the combustion-powered setting tool is characterized in that the first venting connection is arranged in the vicinity of a stop and / or damping element for the driving piston. The stop and / or damping element or a plurality of stop and / or damping elements are used to represent a buffer device for the drive piston. The buffer device is advantageously arranged on one of the main combustion chamber remote from the end of the antechamber cylinder, which corresponds to the setting.

Another preferred embodiment of the combustion-powered setting tool is characterized in that the venting connections each comprise a number of passage openings in a prechamber cylinder. The passage openings are preferably evenly spaced from each other in the antechamber cylinder in a circumferential direction. By a corresponding number and size of the passage openings in the prechamber cylinder, a large effective vent cross section can be provided in a simple manner.

A further preferred embodiment of the combustion-powered setting tool is characterized in that the vent connections comprise passage openings in a control sleeve, which are brought into an open position of the control sleeve in register with the passage openings of the antechamber cylinder, in particular to release the vent connections together. The control sleeve is preferably designed and movable relative to the passage openings of the antechamber, that the passage openings of the prechamber are released or closed in response to a main combustion chamber pressure of the control sleeve. The control sleeve has, for example, substantially the shape of a straight circular cylinder jacket which closes relative to the prechamber cylinder delimiting the prechamber between the open position in which the passage openings of the prechamber are released or opened and a closed position in which the passage openings of the prechamber are closed are, is movable.

Another preferred embodiment of the combustion-powered setting tool is characterized in that the control sleeve is combined with a check valve device for the vent connections, which opens at an overpressure in the antechamber when the control sleeve is in the open position. At an overpressure in the prechamber, the check valve means allows the vent connections to be opened to an environment. As a result, the overpressure in the pre-chamber can be reduced in a simple manner when the control sleeve is in its open position. The check valve device comprises, for example, closing elements, which are designed as check-leaflets. The return lobes release the vent connections only after a certain overpressure in the prechamber and close the vent connections again as soon as the overpressure in the prechamber is reduced. This prevents unwanted backflow of exhaust gases from an exhaust tract into the antechamber of the bolt gun. According to a further aspect of the invention, the non-return valve device, in particular the non-return leaflets, can also be installed independently of the control sleeve in a further course of the exhaust gas tract. As a result, unwanted dynamic influences can be reduced from setting-related movements of the control sleeve.

A further preferred embodiment of the combustion-powered setting tool is characterized in that the non-return valve device comprises closing elements made of a spring steel material. The closing elements of the spring steel material comprise, for example, valve elements, each having two passage openings of different Venting compounds are assigned. The valve elements are interconnected, for example, by a connecting ring body. The connecting ring body may also be formed of spring steel material.

A further preferred embodiment of the combustion-powered setting tool is characterized in that a Vorkammereinlass is provided at one of the main combustion chamber remote from the antechamber cylinder. The two vent connections are closed during a precombustion through the control sleeve. During a main combustion, the two vent connections are released from the control sleeve, that is opened to blow off exhaust gases in front of the piston in the antechamber. So that not just the exhaust gases are sucked back, the control sleeve is combined with the previously described check valve device. Due to the additional pre-chamber inlet at the end of the prechamber cylinder facing away from the main combustion chamber, fresh air is then sucked in as needed. The fresh air is then advantageously sucked through the antechamber inlet into the antechamber when a negative pressure in the cooling main combustion chamber retracts the drive piston.

The invention further relates to a method for operating a previously described combustion-powered setting tool. About the two vent connections, the pre-chamber can advantageously be opened quickly enough so that the driving piston does not run in an undesirable manner on an exhaust cushion and thus loses energy. Through the two vent connections, the entire pre-chamber exhaust gases can be blown off during a setting process quickly and effectively into the environment. The venting via the two vent connections is also referred to as double prechamber venting. The double prechamber venting enables a very fast backpressure reduction in the prechamber and ultimately leads to a higher device energy, since the drive piston does not run on an exhaust pad or in an exhaust pad. The combined with the control sleeve check valve device, which can be arranged in the further course of the exhaust tract, prevents unwanted suction of waste gas in the thermal recycling of the drive piston in a simple manner. By the check valve device is ensured in a simple manner that only fresh air through the Vorkammereinlass, which can also be referred to as Vorkammerinlet, is sucked. The check valve device also prevents advantageous that dirt collects in the area of the vent connections and if necessary, seals provided in the area of the venting connection are damaged.

The invention further relates to a control device, a control sleeve, an antechamber cylinder and / or a check valve device for a previously described combustion-powered setting tool. The parts mentioned are separately tradable.

• Figur 1 ein brennkraftbetriebenes Bolzensetzgerät in einem nicht angepressten Ausgangszustand bei einer Spülung einer Hauptbrennkammer in der Draufsicht;
• Figur 2 das Bolzensetzgerät aus Figur 1 im Längsschnitt;
• Figur 3 das Bolzensetzgerät aus den Figuren 1 und 2 in einem angepressten Zustand mit geschlossener Hauptbrennkammer in der Draufsicht;
• Figur 4 das Bolzensetzgerät aus Figur 3 im Längsschnitt;
• Figur 5 das Bolzensetzgerät aus den Figuren 3 und 4 in einer perspektivischen Darstellung;
• Figur 6 das Bolzensetzgerät aus den Figuren 1 bis 5 bei einer Zündung in der Hauptbrennkammer im Längsschnitt mit geöffneten Entlüftungsverbindungen;
• Figur 7 das Bolzensetzgerät aus den Figuren 1 bis 6 im Längsschnitt bei einer thermischen Rückführung eines Treibkolbens mit geschlossenen Entlüftungsverbindungen;
• Figur 8 eine perspektivische Darstellung einer Steuereinrichtung des Bolzensetzgeräts aus den Figuren 1 bis 6;
• Figur 9 die Steuereinrichtung aus Figur 8 in der Draufsicht;
• Figur 10 eine perspektivische Darstellung einer Rückschlagventileinrichtung, welche in die Steuereinrichtung der Figuren 8 und 9 integriert ist, und
• Figur 11 eine perspektivische Darstellung der Steuereinrichtung aus den Figuren 8 und 9 ohne die Rückschlagventileinrichtung, die in Figur 10 alleine dargestellt ist.

Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, various embodiments are described in detail. Show it.

• FIG. 1 a combustion-powered bolt setting device in a non-pressed initial state at a flushing of a main combustion chamber in plan view;
• FIG. 2 the bolt gun off FIG. 1 in longitudinal section;
• FIG. 3 the bolt gun from the FIGS. 1 and 2 in a pressed state with the main combustion chamber closed in plan view;
• FIG. 4 the bolt gun off FIG. 3 in longitudinal section;
• FIG. 5 the bolt gun from the Figures 3 and 4 in a perspective view;
• FIG. 6 the bolt gun from the FIGS. 1 to 5 in an ignition in the main combustion chamber in longitudinal section with open vent connections;
• FIG. 7 the bolt gun from the FIGS. 1 to 6 in longitudinal section in a thermal recycling of a drive piston with closed vent connections;
• FIG. 8 a perspective view of a control device of the bolt setting from the FIGS. 1 to 6 ;
• FIG. 9 the controller off FIG. 8 in the plan view;
• FIG. 10 a perspective view of a check valve device which in the control device of FIGS. 8 and 9 is integrated, and
• FIG. 11 a perspective view of the control device of the FIGS. 8 and 9 without the check valve device which is in FIG. 10 is shown alone.

embodiments

In the FIGS. 1 to 7 is a setting device 1 greatly simplified in a longitudinal section in various operating conditions and views shown. That in the FIGS. 1 to 7 Setting device 1 shown can be operated with a fuel gas or with a vaporizable liquid fuel. The setting device 1 comprises a housing 3 with a master cylinder 5, which limits a main combustion chamber 6. The main combustion chamber 6 can be supplied via an inlet device 8 gas and / or air. In addition, the main combustion chamber 6 is assigned an ignition device 9.

In the housing 3 of the setting device 1 is a driving piston 10 in the FIGS. 1 to 7 guided back and forth. The driving piston 10 comprises a piston rod 11, which starts from a piston head 12. A the piston head or piston plate 12 facing away from setting 14 of the piston rod 11 is arranged in a bolt guide, which serves to guide fasteners, which are also referred to as bolts. In FIG. 7 the setting end 14 of the piston rod 11 of the drive piston 10 is shown cut off.

The bolt guide with the piston rod 11 of the drive piston 10 disposed therein is also referred to as a setter. About the network, a fastener, such as a nail, bolts or the like, are driven into a (not shown) underground. Before setting a fastener, the setting tool 1 is pressed with his pin guide to the ground and triggered. To trigger a setting process, for example, a switch (not shown) is used, which is also called a trigger switch. The switch is provided, for example, on a (also not shown) handle of the setting device 1.

By an arrow 15 is in the FIGS. 1 to 7 a setting direction indicated. When setting a fastener of the driving piston 10 is strongly accelerated with the piston rod 11 in the setting direction 15 to drive the fastener into the ground. During the setting process, the driving piston 10 is out of his in FIG. 1 illustrated initial position corresponding to an upper or rear dead center, moved to an end position corresponding to a lower or front dead center.

A movement of the driving piston 10 in the FIGS. 1 to 7 to the right is limited by a housing-fixed piston stop 16. By the piston stopper 16 is the upper Dead center of the driving piston 10 defined. The piston stop 16 may be combined with a magnetic device 17. The magnetic device 17 serves, for example, the driving piston 10 with a predetermined holding force in his in FIG. 1 to keep the initial position shown.

A movement of the driving piston 10 to the left is limited by stop and / or damping elements 28, 29. The stop and / or damping elements 28 constitute a buffer 110. The piston head 12 comprises a first piston surface 21, which faces the main combustion chamber 6. A second piston surface 22, which faces away from the main combustion chamber 6, delimits an antechamber 25 in an antechamber cylinder 24.

The prechamber 25 represents a pre-combustion chamber to which an ignition device 26 and an inlet device 27 are assigned. In addition, the stop and / or damping elements 28, 29 are arranged in the antechamber 25. About the inlet device 27 of the pre-chamber or pre-combustion chamber 25, a fuel gas-air mixture is supplied, which is ignited by means of the ignition device 26 in the pre-chamber 25.

The pre-chamber cylinder 24 comprises passage openings 31, 32, which allow, for example, the exit of exhaust gases from the pre-chamber 25. The passage openings 31, 32 can be closed by a control device 30 as needed. The control device 30 comprises a control sleeve 34, the passage openings 37, 38 has.

If the passage openings 37, 38 of the control sleeve 34 are brought into coincidence with the passage openings 31, 32, then the passage openings 31, 32, as can be seen in FIG FIG. 6 sees, open. In the FIGS. 1 to 5 and 7 the passage openings 31, 32 are closed by the control sleeve 34. The control sleeve 34 has substantially the shape of a straight circular cylinder jacket and is in FIG. 11 shown in detail.

Between the antechamber 25 and the main combustion chamber 6 overflow openings 41, 42 are provided. The overflow openings 41, 42 are each assigned a valve device 43, 44. The valve devices 43, 44 are, for example, valve flaps which allow passage of a ignited air-fuel mixture from the prechamber 25 into the main combustion chamber 6.

The control device 30 comprises a control pressure surface 45, which is connected in terms of pressure with the main combustion chamber 6. The control pressure surface 45 is designed as an annular surface 46, which faces radially outside of the prechamber cylinder 24 of the main combustion chamber 6. The control pressure surface 45 is mechanically coupled to the control sleeve 34 via a coupling element 48.

The coupling element 48 is designed as a slider 50, which in the FIGS. 1 to 7 in the horizontal direction movable back and forth on the antechamber cylinder 24 is guided. At one in the FIGS. 1 to 7 right end 51 of the slider 50 is designed as an annular surface 46 control pressure surface 45 is provided. At one in the FIGS. 1 to 7 left end 52 of the slider 50, the control sleeve 34 is attached.

The control device 30 further comprises spring devices 54, 55, which are designed, for example, as helical compression springs. The in the FIGS. 1 to 7 Left ends of the spring means 54, 55 is associated with a housing fixed stop 56, 57 respectively. The housing-fixed stops 56, 57 are provided on the prechamber cylinder 24.

The spring devices 54, 55 are clamped between the housing-fixed stops 56, 57 and the right end 51 of the slider 50 with the control pressure surface 45. Thus, the slider 50 via the spring means 54, 55 supported on the housing-fixed stops 56, 57.

In the FIGS. 1 and 2 the bolt gun 1 is shown in a non-pressed state. Not pressed state means that the setting end 14 of the driving piston 10 is not subjected to a compressive force. When pressing the bolt gun 1 is pressed with the setting end 14 against the ground.

The main combustion chamber 6 is bounded by a combustion chamber sleeve 84 which is displaceable in the axial direction limited to allow flushing of the main combustion chamber 6. In the main combustion chamber 6, a fan 80 is arranged.

In FIG. 2 is the position of the combustion chamber sleeve 84 so that the fan 80 indicated by arrows air flow 81, 82 of the rear of the device, ie the in FIG. 2 right side, generated by the main combustion chamber 6 in the environment. By the air flow 81, 82 After a setting process, exhaust gases are transported out of the main combustion chamber 6. In addition, the air flow 81, 82 ensures cooling of the main combustion chamber 6.

In the FIGS. 3 to 6 the bolt gun 1 is shown in the pressed state. In the pressed state, the tool tip of the bolt setting device 1 is pressed against a substrate. By the pressing movement, the combustion chamber sleeve 84 to the rear, ie in FIG. 4 to the right, moved, as in FIG. 4 is indicated by an arrow 83. By the movement 83 of the combustion chamber sleeve 84 to the rear, the main combustion chamber 6 is closed from the environment.

In the following, fuel gas is injected via the inlet device 27 into the prechamber 25 and via the inlet device 8 into the main combustion chamber 6. When injecting the fuel gas into the prechamber 25 and into the main combustion chamber 6, the fan 80 rotates in the main combustion chamber 6.

The ignition of the gas mixture is initiated by the ignition device 26 associated with the pre-chamber 25 in the vicinity of the buffer 110. After the ignition of the gas mixture in the pre-chamber 25, a flame front spreads, which migrates from the side of the buffer 110 in the direction of the main combustion chamber 6, ie in FIG. 4 to the right. In this case, the propagating flame front pushes unburned air / fuel mixture with a high pressure before him into the main combustion chamber. 6

The overflow from the pre-chamber 25 into the main combustion chamber 6 via the overflow openings 41, 42 with open valve means 43, 44. The valve means 43, 44 are designed for example as check valves, which the overflow openings 41, 42, which are also referred to as Überzündöffnungen, Release during spreading of the laminar flame front.

When the flame front has reached the check valves of the valve means 43, 44, the flame can over-ignite via the check valves in the main combustion chamber 6, whereby the main chamber combustion is introduced into the main combustion chamber 6. In FIG. 6 is indicated by a symbol 86, the main chamber ignition in the main combustion chamber 6.

In the main chamber ignition 86, the pressure in the main combustion chamber 6 increases and the control sleeve 34 is against the force of the spring means 54, 55, which are supported on the housing-fixed stops 56, 57, moved forward, ie in FIG. 6 to the left, as indicated by arrows 87, 88. By the movement 87, 88 of the control sleeve 34 forward two pressure relief connections 108, 109 of the pre-chamber 25 are opened.

The prechamber pressure escaping from the prechamber 25 via the opened vent connections 108, 109 is in FIG. 6 indicated by arrows 91 to 94. The relief connections 108, 109 are also referred to as exhaust ports. Via the discharge connections or exhaust openings 108, 109, the pre-chamber pressure at the main chamber ignition 86 can escape. The driving piston 10 sets in the main chamber ignition 86 at high speed in motion and executes a settlement.

In FIG. 7 the bolt setting device 1 is shown in a longitudinal return at a thermal return of the drive piston 10. After the driving piston 10 reached the lower or front piston turning point on the buffer 110, a main chamber residual pressure was blown off via the relief link 109. This has the consequence that the main combustion chamber pressure in the main combustion chamber 6 drops to ambient pressure and the control sleeve 34 pressure-controlled closes the exhaust ports or discharge connections 108, 109 again.

By a cooling of the bolt setting device 1 after setting arises in the main combustion chamber 6, a negative pressure. This negative pressure in the main combustion chamber 6 causes the driving piston 10 is sucked back into its original position or sucked back. This is done by a Vorkammereinlass 140 at the in FIG. 7 24 fresh air sucked or sucked into the antechamber 25 of the bolt setting device 1. The intake of fresh air is in FIG. 7 indicated by an arrow 141.

The Vorkammereinlass 140 is advantageously associated with a one-way check valve. For example, the check valve includes a relatively large leaflet which, while allowing fresh air to be drawn into the prechamber 25, but in the reverse direction, prevents undesirable outflow of pressurized fuel and air mixture from the prechamber 25 into the environment.

When lifting the bolt gun 1 with the setting end 14, the FIG. 7 is shown cut off, from the ground, the combustion chamber sleeve 84 is again shifted so that the main combustion chamber 6 can be flushed with ambient air, as in FIG. 2 indicated by the arrows 81 and 82. Subsequently, a new setting cycle can be started.

In the FIGS. 8 to 11 For example, the controller 30 is shown alone in various views. The control device 30 comprises the control sleeve 34, which is connected via the coupling element 48 with a coupling sleeve 100. At a free end of the coupling sleeve 100, so in FIG. 9 right end of the coupling sleeve 100, which is designed as an annular surface 46 control pressure surface 45 is provided.

The coupling sleeve 100 is fixedly connected to a connecting flange 105 via slide rods 101, 102, 103, which partially represent the slider 50. The connecting flange 105 connects the control sleeve 34 with the slide rods 101 to 103. On the other side, the slide rods 101 to 103 are connected to the coupling sleeve 100 via a connecting flange 98. Each slide rod 101 to 103 is associated with a spring device 54, 55 designed as a compression spring. The spring devices 54, 55 are clamped in the installed state of the control device 30 between the connecting flange 98 and the housing-fixed stops 56, 57 on the prechamber cylinder 24.

The control sleeve 34 serves to the passage openings 31, 32; 117, 118 release in the pre-chamber cylinder 24 as needed, as in FIG. 6 is indicated by the arrows 91 to 94. For this purpose, the control sleeve 34, the passage openings 37, 38; 117, 118 which, for opening the vent connections 108, 109 with the passage openings 31, 32; 111, 112 are brought into the pre-chamber cylinder 24 to cover.

In FIG. 10 it can be seen that the check valve device 120 comprises valve elements 121 to 123, which are interconnected by a connecting ring body 124. Each of the valve elements 121 to 123 comprises two closing elements 127, 128, the passage openings 37; 118 of the two discharge connections 108; 109 are assigned. The valve elements 121 to 123 with the closing elements 127, 128 are integrally formed from spring steel. The production of the valve elements 121 to 123 with the closing elements 127, 128 takes place, for example, by laser beam cutting. The connecting ring body 124 may also be made by laser cutting from a spring steel material.

Claims (10)

Internal combustion setting device (1) for driving fastening elements into a substrate, having at least one main combustion chamber (6) for a fuel, with a driving piston (10) which can be driven via expandable gases from the main combustion chamber (6) in a setting direction (15), and with an antechamber (25), which is associated with an ignition device (26) and in which a pressure acting on the main combustion chamber (6) before the ignition of a fuel-air mixture in the main combustion chamber (6) can be built up, characterized in that the prechamber (25) has at least two vent connections (108, 109) spaced apart in an axial direction and having through openings (31, 32; 111, 112) which can be closed and released to allow rapid bleeding of the prechamber (25). An internal combustion setting device according to claim 1, characterized in that a first vent connection (108) is further apart in the axial direction from the main combustion chamber (6) than a second vent connection (109). Internal combustion setting device according to claim 2, characterized in that the first vent connection (108) in the vicinity of a stop and / or damping element (28,29) for the driving piston (10) is arranged. Internal combustion setting device according to one of the preceding claims, characterized in that the vent connections (108, 109) each comprise a series of passage openings (31, 32; 111, 112) in an antechamber cylinder (24). Internal combustion setting device according to claim 4, characterized in that the vent connections (108, 109) comprise passage openings (37, 38, 117, 118) in a control sleeve (34) which, in an open position of the control sleeve (34) with the passage openings (31, 32; 111, 112) of the prechamber cylinder (24) are brought into registry to release the vent connections (108, 109). Internal combustion setting device according to claim 5, characterized in that the control sleeve (34) is combined with a check valve device (120) for the vent connections (108, 109) which opens at an overpressure in the prechamber (25) when the control sleeve (34 ) is in the open position. Internal combustion setting device according to claim 6, characterized in that the non-return valve device (120) comprises closing elements (127, 128) made of a spring steel material. Internal combustion setting device according to one of Claims 4 to 7, characterized in that an antechamber inlet (140) is provided at an end of the pre-chamber cylinder (24) facing away from the main combustion chamber (6). Method for operating a combustion-powered setting device (1) according to one of the preceding claims. Control device (30), control sleeve (34), antechamber cylinder (24) and / or check valve device (120) for a combustion-powered setting device according to one of claims 1 to 8.

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