EP3150336A1 - Appareil de pose fonctionnant avec des combustibles - Google Patents

Appareil de pose fonctionnant avec des combustibles Download PDF

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Publication number
EP3150336A1
EP3150336A1 EP15187360.1A EP15187360A EP3150336A1 EP 3150336 A1 EP3150336 A1 EP 3150336A1 EP 15187360 A EP15187360 A EP 15187360A EP 3150336 A1 EP3150336 A1 EP 3150336A1
Authority
EP
European Patent Office
Prior art keywords
setting
combustion chamber
fluid conveying
fluid
switching device
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.)
Withdrawn
Application number
EP15187360.1A
Other languages
German (de)
English (en)
Inventor
Rolf Erhardt
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
Priority to EP15187360.1A priority Critical patent/EP3150336A1/fr
Priority to EP16770779.3A priority patent/EP3356086A1/fr
Priority to US15/750,992 priority patent/US20180222029A1/en
Priority to PCT/EP2016/072901 priority patent/WO2017055236A1/fr
Publication of EP3150336A1 publication Critical patent/EP3150336A1/fr
Withdrawn legal-status Critical Current

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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 invention relates to a combustion-powered setting tool for driving fasteners, having at least one combustion chamber and a driving piston, which has a first piston surface, which faces the combustion chamber, and a second piston surface, which faces away from the combustion chamber and defines an expansion space, and with a Fluid conveyor, which promotes a flow.
  • the invention also relates to a method for operating such a combustion-powered setting tool.
  • EP 2 106 883 A1 is a combustion-powered setting tool, known for driving fasteners into a workpiece, with at least one combustion chamber for a fuel, with a displaceably guided in a piston guide drive piston with a piston head, wherein the drive piston is driven by expanding gases from the combustion chamber, and with a device for returning the driving piston to an initial position via a differential pressure between spaces on both axial sides of the piston head, the means for returning the driving piston including a pump formed as an electrical suction pump connected to the combustion chamber for generating a suction air flow.
  • the object of the invention is the effectiveness and / or functionality in driving fasteners with a combustion-powered setting tool, with at least one combustion chamber and a driving piston, which has a first piston surface, which faces the combustion chamber, and a second piston surface, the combustion chamber turned away and an expansion space limited, and with a fluid conveyor, which promotes a flow rate to improve.
  • the object is with a combustion-powered setting tool, for driving fasteners, with at least one combustion chamber and a driving piston, which has a first piston surface, which faces the combustion chamber, and a second piston surface, which faces away from the combustion chamber and limits an expansion space, and with a fluid conveying device, which promotes a volume flow, achieved in that a switching device is arranged on an output side of the fluid conveying device through which the volume flow of the fluid conveying device can be fully or partially promoted to different locations in or on the setting tool.
  • the fluid delivery device can be designed as a piston pump, which is relatively easy to reverse from the conveying direction.
  • the fluid delivery device can also be designed as a pump of a pump type, in which the conveying direction can not be switched due to the design.
  • a pump of this type of pump is, for example, a centrifugal pump.
  • the conveying direction of the fluid conveying device can also be switched over in the case of pumps in which this is not or not readily possible by design.
  • the piston return during operation of the setting device is simplified and regardless of a type of pump designed as a pump fluid delivery device.
  • the fluid may be gas, such as air, in particular ambient air act. Then executed as a pump fluid delivery device is also referred to as a compressor.
  • a preferred embodiment of the combustion-powered setting tool is characterized in that the switching means is a valve device having at least three ports, one of which is connected to the output side of the fluid conveying device.
  • the valve device is preferably a directional control valve.
  • the directional control valve with the at least three connections can represent at least two different paths for the volume flow conveyed with the fluid delivery device. This makes it possible, with one and the same fluid conveyor at different times during operation in or on the setting tool different locations with a flow, possibly also with a partial flow to supply.
  • a further preferred embodiment of the combustion-powered setting tool is characterized in that the switching device has a connection for the Combustion chamber has. As a result, a fluidic connection between the output side of the fluid delivery device and the combustion chamber is made possible in a simple manner.
  • a further preferred embodiment of the combustion-powered setting tool is characterized in that the switching device has a connection for the expansion space.
  • the switching device has a connection for the expansion space.
  • Another preferred embodiment of the combustion-powered setting tool is characterized in that the switching device has at least one connection for a region of the setting device to be cooled.
  • the switching device has at least one connection for a region of the setting device to be cooled.
  • a further preferred embodiment of the combustion-powered setting device is characterized in that the switching device is connected in terms of control with a controller.
  • the controller is, for example, a control unit integrated in the setting device.
  • the controller is advantageously connected to at least one sensor device. With the sensor device, for example, a pressure in the combustion chamber is detected. Alternatively or additionally, a pressure in the expansion space can be detected with the sensor device. Alternatively or additionally, a position of the drive piston in the setting device can be detected with the sensor device.
  • a further preferred embodiment of the combustion-powered setting tool is characterized in that the fluid conveying device is a pump or a compressor with only one conveying direction or flow direction.
  • the fluid delivery device is driven, for example, in a simple manner with an electric motor, which is integrated in the setting device.
  • the electric motor can advantageously be an electric motor already present in the setting tool.
  • the above-mentioned object is alternatively or additionally achieved by using one and the same fluid conveying device at different times in the operation of the Setting device different locations in or on the setting tool with the flow or with a partial flow of the fluid conveyor are supplied. It is also advantageously possible to provide different partial volume flows at different locations in or on the setting tool, in particular simultaneously with one and the same fluid delivery device. As a result, particularly diverse applications for the fluid delivery device in the setting device are made possible in a simple manner.
  • a preferred embodiment of the method is characterized in that at least one, several or all of the following method steps are or are performed:
  • the combustion chamber is connected via the switching device to the output side of the fluid conveyor to charge the combustion chamber with a relative to an environment of the setting device higher pressure ;
  • a driving function of the setting device can be improved.
  • the expansion space is connected via the switching device to the output side of the fluid delivery device in order to reset the drive piston after a setting;
  • the drive piston is preferably returned to a starting position or moved back. After resetting the drive piston to its original position, a new setting can be initiated.
  • a region of the setting device to be cooled in particular a cylinder of the setting device, is connected via the switching device to the outlet side of the fluid conveying device in order to cool the region to be cooled.
  • cooling fins are advantageously provided on the outside of the cylinder. The cooling fins are then supplied with the volume flow, in particular with an air flow, in order to cool the cylinder, in particular the combustion chamber in the interior of the cylinder.
  • partial streams can be conducted from the outlet side of the fluid conveying device in different lines to a plurality of locations in or on the setting tool in a simple manner.
  • the switching device can be switched easily between different constellations. For example, at the same time the combustion chamber is pressurized while the cylinder can be cooled by an air flow.
  • the piston by air supply in the Expansion space are reset while at the same time the cylinder of the setting device is cooled with an air flow on the equipped with cooling fins to be cooled area.
  • the invention further relates to a fluid delivery device and / or a switching device for a previously described setting device.
  • the facilities mentioned may be separately tradable.
  • a setting device 1 is shown greatly simplified in longitudinal section.
  • the setting device 1 shown in the figure can be operated with a fuel gas or with a vaporizable liquid fuel.
  • the setting device 1 comprises a housing 3 with a cylinder 5, in which a combustion chamber 6 is arranged.
  • a combustion chamber 6 In the combustion chamber 6, an ignition device 7 is indicated, with the fuel gas, in particular a fuel gas-air mixture in the combustion chamber 6 can be ignited.
  • the housing 3 of the setting device 1 further comprises a piston guide 8 for a driving piston 10.
  • the driving piston 10 comprises a piston rod 11 which extends from a piston head 12.
  • the piston head 12 facing away from the end of the piston rod 11 is arranged in a bolt guide 14, which serves to guide fasteners, which are also referred to as bolts.
  • the bolt guide 14 with the piston rod 11 of the drive piston 10 arranged therein is also referred to as a setter.
  • a fastener such as a nail, bolt or the like, are driven into a (not shown) workpiece.
  • the workpiece may be a wall in a building.
  • the setting tool 1 Before setting a fastener, the setting tool 1 is pressed with his pin guide 14 to the workpiece and triggered.
  • a (not shown) switch To trigger a setting process is a (not shown) switch, which is also referred to as a trigger switch.
  • the switch is provided for example on a (also not shown) handle of the setting device.
  • the setting mechanism also includes the combustion chamber 6 and the driving piston 10 with the piston head 12.
  • the piston head 12 comprises a first piston surface 21, which faces the combustion chamber 6.
  • the piston rod 11 of the driving piston 10 extends from the piston head 12 through the expansion space 25 into the bolt guide 14.
  • the setting device 1 further comprises a fluid conveying device 30 having an inlet side 31 and an outlet side 32.
  • a switching device 40 is arranged on the outlet side 32 of the fluid conveying device 30.
  • the switching device 40 is fluidly connected by unspecified fluid lines with the fluid conveying device 30 and with different locations in or on the setting tool 1.
  • the housing 3 of the setting device 1 is preferably used only or mainly for receiving the engine of the setting device 1.
  • the setting device 1 includes, for example, another (not shown) housing, which is also referred to as the outer housing.
  • the housing 3 in the setting tool 1 can also be referred to as an inner housing.
  • the inner housing 3 is advantageously connected to the outer housing.
  • the fluid delivery device 30 is, for example, a pump with only one delivery direction.
  • the pump is designed, for example, as a centrifugal pump.
  • the conveying medium for the fluid conveying device 30 is preferably air. Therefore, the fluid delivery device 30 may also be referred to as a compressor.
  • An arrow 41 indicates that the fluid conveying device 30 is supplied with a fluid, in particular air, via the inlet side 31.
  • a further arrow 42 is indicated that the fluid is guided or conducted from the output side 32 of the fluid conveying device 30 to the switching device 40.
  • Arrows 43, 44, 45 indicate that the fluid conveying device 30 can lead or convey different volume flows or partial volume flows to different places in or on the setting device 1 via the switching device 40.
  • the arrow 43 indicates that a volume flow or a partial volume flow into the combustion chamber 6 is conveyed by the fluid delivery device 30 via the switching device 40.
  • the arrow 44 indicates how a volume flow or a partial volume flow is guided or conveyed by the fluid delivery device 30 via the switching device 40 into the expansion space 25.
  • the arrow 45 indicates how a volume flow or a partial volume flow is guided or conveyed to a region 50 to be cooled by the fluid delivery device 30 via the switching device 40.
  • the area to be cooled 50 is provided on the outside of the cylinder 5 of the inner housing 3 of the setting device 1.
  • a total of four cooling ribs 54 are provided on the outside of the cylinder 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP15187360.1A 2015-09-29 2015-09-29 Appareil de pose fonctionnant avec des combustibles Withdrawn EP3150336A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15187360.1A EP3150336A1 (fr) 2015-09-29 2015-09-29 Appareil de pose fonctionnant avec des combustibles
EP16770779.3A EP3356086A1 (fr) 2015-09-29 2016-09-27 Appareil d'assemblage fonctionnant à l'énergie thermique de combustion
US15/750,992 US20180222029A1 (en) 2015-09-29 2016-09-27 Setting tool driven by internal combustion
PCT/EP2016/072901 WO2017055236A1 (fr) 2015-09-29 2016-09-27 Appareil d'assemblage fonctionnant à l'énergie thermique de combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15187360.1A EP3150336A1 (fr) 2015-09-29 2015-09-29 Appareil de pose fonctionnant avec des combustibles

Publications (1)

Publication Number Publication Date
EP3150336A1 true EP3150336A1 (fr) 2017-04-05

Family

ID=54251347

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15187360.1A Withdrawn EP3150336A1 (fr) 2015-09-29 2015-09-29 Appareil de pose fonctionnant avec des combustibles
EP16770779.3A Withdrawn EP3356086A1 (fr) 2015-09-29 2016-09-27 Appareil d'assemblage fonctionnant à l'énergie thermique de combustion

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16770779.3A Withdrawn EP3356086A1 (fr) 2015-09-29 2016-09-27 Appareil d'assemblage fonctionnant à l'énergie thermique de combustion

Country Status (3)

Country Link
US (1) US20180222029A1 (fr)
EP (2) EP3150336A1 (fr)
WO (1) WO2017055236A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479483A2 (fr) * 2003-05-23 2004-11-24 Illinois Tool Works Inc. Dispositif de combustion avec le flux d'air amélioré
DE10357842A1 (de) * 2003-12-11 2005-07-21 Hilti Ag Brennkraftbetriebenes Setzgerät
US20080251562A1 (en) * 2005-10-11 2008-10-16 Maurice Liesse Internal-Combustion Gas-Powered Hand Tool
EP2106883A1 (fr) 2008-04-01 2009-10-07 HILTI Aktiengesellschaft Appareil de pose fonctionnant avec des combustibles
EP2161107A1 (fr) * 2007-07-04 2010-03-10 Max Co., Ltd. Outil à choc du type à combustion de gaz
EP2826599A1 (fr) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Procédé de commande et machine-outil manuelle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2100364B (en) * 1981-04-23 1985-01-09 Musso Mario A hydraulic percussive drill
FR2618092B1 (fr) * 1987-07-17 1989-11-10 Montabert Ets Distributeur hydraulique pour appareil a percussions mu par un fluide incompressible sous pression

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479483A2 (fr) * 2003-05-23 2004-11-24 Illinois Tool Works Inc. Dispositif de combustion avec le flux d'air amélioré
DE10357842A1 (de) * 2003-12-11 2005-07-21 Hilti Ag Brennkraftbetriebenes Setzgerät
US20080251562A1 (en) * 2005-10-11 2008-10-16 Maurice Liesse Internal-Combustion Gas-Powered Hand Tool
EP2161107A1 (fr) * 2007-07-04 2010-03-10 Max Co., Ltd. Outil à choc du type à combustion de gaz
EP2106883A1 (fr) 2008-04-01 2009-10-07 HILTI Aktiengesellschaft Appareil de pose fonctionnant avec des combustibles
EP2826599A1 (fr) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Procédé de commande et machine-outil manuelle

Also Published As

Publication number Publication date
EP3356086A1 (fr) 2018-08-08
WO2017055236A1 (fr) 2017-04-06
US20180222029A1 (en) 2018-08-09

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