EP1782925A1 - Outil de scellement entraîné par combustion - Google Patents

Outil de scellement entraîné par combustion Download PDF

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Publication number
EP1782925A1
EP1782925A1 EP06122664A EP06122664A EP1782925A1 EP 1782925 A1 EP1782925 A1 EP 1782925A1 EP 06122664 A EP06122664 A EP 06122664A EP 06122664 A EP06122664 A EP 06122664A EP 1782925 A1 EP1782925 A1 EP 1782925A1
Authority
EP
European Patent Office
Prior art keywords
trigger
combustion chamber
switch
switching
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.)
Granted
Application number
EP06122664A
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German (de)
English (en)
Other versions
EP1782925B1 (fr
Inventor
Mario Zahner
Peter Stauss
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
Publication of EP1782925A1 publication Critical patent/EP1782925A1/fr
Application granted granted Critical
Publication of EP1782925B1 publication Critical patent/EP1782925B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 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.
  • 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.
  • FIG. 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 bolt 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 projects beyond the pin guide 18 in the illustrated in Fig.
  • 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. However, 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 tool 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 combustion chamber 13 facing the end of the piston guide 17.
  • 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 the setting tool 10 is pressed against a substrate U (see Fig. 2), the Anpressconnectler is offset in the direction of the arrow 50. This movement is transmitted via the Anpressstrang 25 to 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 shown in FIG. 2 can be seen.
  • 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.
  • the trigger 30 has been pressed a distance in the direction of the arrow 51.
  • the first trigger switch 21 was actuated via the second arm 33 of the switching element 31 and outputs at a time t1 a switching signal to the control unit 20, whereby the ignition electronics of the control unit 20 is put into standby.
  • a to a total of 37 designated 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 trigger 30 has been pressed further in the direction of the arrow 53 and fully actuated.
  • the trigger switch 22 has now been actuated via the first arm 32 of the switching element 31.
  • the blocking element 34 of the switching element 31 still remains in the blocking position 54 with respect to the combustion chamber sleeve 12.
  • the control unit 20 now receives at a time t3 a switching signal for triggering an ignition 24 by the ignition device.
  • 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.
EP06122664A 2005-11-04 2006-10-20 Outil de scellement entraîné par combustion Active EP1782925B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005000149A DE102005000149A1 (de) 2005-11-04 2005-11-04 Brennkraftbetriebenes Setzgerät

Publications (2)

Publication Number Publication Date
EP1782925A1 true EP1782925A1 (fr) 2007-05-09
EP1782925B1 EP1782925B1 (fr) 2010-01-13

Family

ID=37709284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06122664A Active EP1782925B1 (fr) 2005-11-04 2006-10-20 Outil de scellement entraîné par combustion

Country Status (5)

Country Link
US (1) US7284511B2 (fr)
EP (1) EP1782925B1 (fr)
JP (1) JP5156218B2 (fr)
DE (2) DE102005000149A1 (fr)
ES (1) ES2338143T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2491233A1 (fr) * 2009-10-23 2012-08-29 Joseph S. Adams Moteur d'outil à gaz
EP2708328A3 (fr) * 2012-09-12 2015-05-06 Max Co., Ltd. Outil d'impact
EP3181304A1 (fr) * 2015-12-18 2017-06-21 Illinois Tool Works Inc. Procédé de contrôle d'actionnement d'un outil de fixation a gaz et dispositif correspondant

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673779B2 (en) * 2004-02-09 2010-03-09 Illinois Tool Works Inc. Combustion chamber distance control combustion-powered fastener-driving tool
US7513402B2 (en) * 2005-10-19 2009-04-07 Makita Corporation Power tool
US20080251050A1 (en) * 2007-04-05 2008-10-16 Jacobsen Stephen C Rapid-fire rapid-response power conversion system
JP4945359B2 (ja) * 2007-07-26 2012-06-06 株式会社マキタ 燃焼式打ち込み工具
DE102008000909A1 (de) * 2008-04-01 2009-10-08 Hilti Aktiengesellschaft Brennkraftbetriebenes Setzgerät
US8336749B2 (en) * 2009-03-31 2012-12-25 Illinois Tool Works Inc. Single switched dual firing condition combustion nailer
JP5579594B2 (ja) * 2010-12-28 2014-08-27 新電元工業株式会社 制御回路
US9486906B2 (en) 2012-05-11 2016-11-08 Illinois Tool Works Inc. Lockout for fastener-driving tool
EP2826600A1 (fr) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Procédé de commande et machine-outil manuelle
EP2826601A1 (fr) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Procédé de commande et machine-outil manuelle
EP2826599A1 (fr) * 2013-07-16 2015-01-21 HILTI Aktiengesellschaft Procédé de commande et machine-outil manuelle
EP2851158A1 (fr) * 2013-09-19 2015-03-25 HILTI Aktiengesellschaft Dispositif d'entraînement avec accumulateur pneumatique chauffé
EP2851157A1 (fr) * 2013-09-19 2015-03-25 HILTI Aktiengesellschaft Dispositif d'entraînement avec accumulateur pneumatique
EP3034238A1 (fr) * 2014-12-19 2016-06-22 HILTI Aktiengesellschaft Appareil d'enfoncement doté de chambre de combustion réglable
EP3184249A1 (fr) * 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Cloueur entraine par combustible comprenant un magasin
WO2017045972A1 (fr) * 2015-09-14 2017-03-23 Hilti Aktiengesellschaft Cloueuse fonctionnant au moyen d'un gaz combustible et dotée d'un organe d'alimentation
EP3141347A1 (fr) * 2015-09-14 2017-03-15 HILTI Aktiengesellschaft Appareil d'enfoncement entraine par combustible dote d'une articulation de soupape
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

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3964659A (en) * 1975-03-12 1976-06-22 Senco Products, Inc. Safety firing control means for a fluid operated tool
GB2057334A (en) * 1979-08-31 1981-04-01 Senco Products Control arrangements for electro mechanical tool
US4679719A (en) * 1985-12-27 1987-07-14 Senco Products, Inc. Electronic control for a pneumatic fastener driving tool
US5909836A (en) * 1997-10-31 1999-06-08 Illinois Tool Works Inc. Combustion powered tool with combustion chamber lockout
EP1512495A2 (fr) * 1994-10-21 2005-03-09 Senco Products, Inc Outil pneumatique de pose de fixations et sa commande électronique

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US4074844A (en) * 1977-01-17 1978-02-21 Olin Corporation Gravity feed hot top tool
DE10032310C2 (de) * 2000-07-04 2003-07-17 Hilti Ag Tragbares, brennkraftbetriebenes Arbeitsgerät, insbesondere Setzgerät für Befestigungselemente, und Verfahren zu seiner Betriebssteuerung
DE10135031C2 (de) * 2001-07-18 2003-08-14 Hilti Ag Tragbares, brennkraftbetriebenes Arbeitsgerät, insbesondere Setzgerät für Befestigungselemente
JP4151346B2 (ja) * 2002-08-09 2008-09-17 日立工機株式会社 燃焼式打込み工具
US7150139B1 (en) * 2003-03-19 2006-12-19 Lund And Company Invention, L.L.C. Lawnmower utilizing hydrogen from the electrolysis of water
JP2004314263A (ja) * 2003-04-18 2004-11-11 Hitachi Koki Co Ltd 燃焼式動力工具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964659A (en) * 1975-03-12 1976-06-22 Senco Products, Inc. Safety firing control means for a fluid operated tool
GB2057334A (en) * 1979-08-31 1981-04-01 Senco Products Control arrangements for electro mechanical tool
US4679719A (en) * 1985-12-27 1987-07-14 Senco Products, Inc. Electronic control for a pneumatic fastener driving tool
EP1512495A2 (fr) * 1994-10-21 2005-03-09 Senco Products, Inc Outil pneumatique de pose de fixations et sa commande électronique
US5909836A (en) * 1997-10-31 1999-06-08 Illinois Tool Works Inc. Combustion powered tool with combustion chamber lockout

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2491233A1 (fr) * 2009-10-23 2012-08-29 Joseph S. Adams Moteur d'outil à gaz
EP2491233A4 (fr) * 2009-10-23 2016-03-09 Joseph S Adams Moteur d'outil à gaz
EP2708328A3 (fr) * 2012-09-12 2015-05-06 Max Co., Ltd. Outil d'impact
US9604352B2 (en) 2012-09-12 2017-03-28 Max Co., Ltd. Impact tool
EP3181304A1 (fr) * 2015-12-18 2017-06-21 Illinois Tool Works Inc. Procédé de contrôle d'actionnement d'un outil de fixation a gaz et dispositif correspondant
FR3045784A1 (fr) * 2015-12-18 2017-06-23 Illinois Tool Works Procede de controle d'actionnement d'un outil de fixation a gaz et dispositif correspondant
US10456897B2 (en) 2015-12-18 2019-10-29 Illinois Tool Works Inc. Method for controlling the actuation of a gas-powered fixing tool and the corresponding device

Also Published As

Publication number Publication date
JP5156218B2 (ja) 2013-03-06
US7284511B2 (en) 2007-10-23
EP1782925B1 (fr) 2010-01-13
DE102005000149A1 (de) 2007-05-10
DE502006005900D1 (de) 2010-03-04
JP2007125692A (ja) 2007-05-24
ES2338143T3 (es) 2010-05-04
US20070101954A1 (en) 2007-05-10

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