The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arra
The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2) wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber (2), wherein the metering device (4) comprises a thermomechanical element (15) by means of which the defined amount can be varied as a function of a temperature.
대표청구항▼
1. A fastener driving tool, comprising a tank for storing a fuel,a combustion chamber connected to the tank, wherein the combustion chamber has a movable piston for powering a driving plunger which drives a fastener, anda metering device arranged between the tank and the combustion chamber,wherein a
1. A fastener driving tool, comprising a tank for storing a fuel,a combustion chamber connected to the tank, wherein the combustion chamber has a movable piston for powering a driving plunger which drives a fastener, anda metering device arranged between the tank and the combustion chamber,wherein a defined quantity of fuel can be transported by means of the metering device from a metering space into the combustion chamber, and wherein the metering device comprises a thermomechanical element comprising an expansion material compound comprising a thermo-actuator that comprises a temperature-dependently positioned tappet by means of which the defined quantity can be varied as a function of a temperature. 2. The fastener driving tool according to claim 1, wherein the metering space can be varied by the thermomechanical element. 3. The fastener driving tool according to claim 1, wherein the metering device comprises a movable displacement member for ejecting the defined quantity of fuel, and wherein a stop position of the displacement member can be varied via the thermomechanical element. 4. The fastener driving tool according to claim 3, wherein a drive mechanism of the displacement member can be driven by a pressure of the fuel via a connection to the tank. 5. The fastener driving tool according to claim 3, wherein the displacement member is held in an initial position under application of force by means of a spring. 6. The fastener driving tool according to claim 1, wherein the thermomechanical element comprises a bimetallic member. 7. The fastener driving tool according to claim 1, wherein the metering device comprises at least one valve member wherein the valve member is operated electrically. 8. The fastener driving tool according to claim 7, wherein the valve member comprises a 3-way valve. 9. The fastener driving tool according to claim 1, wherein a characteristic curve of the defined fuel quantity as a function of an ambient temperature has a substantially bilinear progression. 10. The fastener driving tool according to claim 1, wherein the thermomechanical element comprises a remote sensor. 11. The fastener driving tool according to claim 2, wherein the metering device comprises a movable displacement member for ejecting the defined quantity of fuel, and wherein a stop position of the displacement member can be varied via the thermomechanical element. 12. The fastener driving tool according to claim 11, wherein a drive mechanism of the displacement member can be driven by a pressure of the fuel via a connection to the tank. 13. The fastener driving tool according to claim 4, wherein the displacement member is held in an initial position under application of force by means of a spring. 14. The fastener driving tool according to claim 12, wherein the displacement member is held in an initial position under application of force by means of a spring. 15. The fastener tool of claim 6, wherein the bimetallic member comprises a bimetallic disk. 16. The fastener driving tool according to claim 2, wherein the metering device comprises at least one valve member wherein the valve member is operated electrically. 17. The fastener driving tool according to claim 8, wherein the 3-way valve has two switching positions. 18. The fastener driving tool according to claim 16, wherein the valve member comprises a 3-way valve.
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