EP1502709B1 - Gasbetriebenes Eintreibwerkzeug mit Kolben - Google Patents

Gasbetriebenes Eintreibwerkzeug mit Kolben Download PDF

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Publication number
EP1502709B1
EP1502709B1 EP04291868A EP04291868A EP1502709B1 EP 1502709 B1 EP1502709 B1 EP 1502709B1 EP 04291868 A EP04291868 A EP 04291868A EP 04291868 A EP04291868 A EP 04291868A EP 1502709 B1 EP1502709 B1 EP 1502709B1
Authority
EP
European Patent Office
Prior art keywords
bearing
chamber
cylinder
cage
chamber sleeve
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.)
Active
Application number
EP04291868A
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English (en)
French (fr)
Other versions
EP1502709A1 (de
Inventor
Frédéric Nayrac
Bruno Toulouse
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.)
Societe de Prospection et dInventions Techniques SPIT SAS
Original Assignee
Societe de Prospection et dInventions Techniques SPIT SAS
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Publication date
Application filed by Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP1502709A1 publication Critical patent/EP1502709A1/de
Application granted granted Critical
Publication of EP1502709B1 publication Critical patent/EP1502709B1/de
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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 invention relates to an apparatus for sealing or perforating or driving or driving any element in a receiving material, such as a nailer, stapler or hammer, with gas operation corresponding to the preamble of claim 1.
  • a piston is movably mounted in a cylinder to be propelled, by the explosion of a mixture of air and a fuel gas injected from a cartridge into a combustion chamber, and to drive an element, for example fixing (a nail or a pad), or other ankle.
  • an organ, called cage which, when setting support and via a probe that can be a mobile buffer guide, pushes a chamber sleeve to the stop against the cylinder head that carries the spark plug to cause the explosion, to close the chamber combustion thus closed by this sleeve, the cylinder head and the piston head.
  • the cage and the sleeve can be connected to each other by screwing.
  • the recoil of the cage is effected against the action of a return spring, to return the device in the open position, also bearing against the cylinder of the piston.
  • the invention of the present application aims to overcome any stresses of parasitic pressure on both the cylinder head and the cage.
  • the invention relates to a gas-operated apparatus, in which, under the action of the explosion of a mixture of air and gas in a closed chamber via a chamber sleeve and a cage during the support of the apparatus, a piston is propelled into a cylinder for driving an element, characterized in that the chamber sleeve and the cylinder are arranged so that when closing the the device, the chamber sleeve comes into abutment against the cylinder.
  • element means either a nail, a buffer, an ankle, a staple or any other similar element.
  • the cage and the chamber sleeve are slidably linked to prevent stress propagation.
  • the chamber sleeve may comprise at least one support pad, arranged to abut against a support lug of the cylinder, at least one connecting pin of the chamber sleeve and the cage and at least one support lug an opening spring, also bearing against a cheek of the cylinder, and mutual thrust of one by the other of the chamber sleeve and the cage.
  • the chamber sleeve may also comprise at least one support pad, thrust and connection arranged to abut against a support cheek of the cylinder in the closed position, at least one connecting pin of the chamber sleeve, the support pad and the cage and at least one opening spring of the chamber in abutment against the support cheek and the support pad.
  • the shoe carries a narrowed section of the support finger arranged to bear against the cheek of the cylinder and receive the opening spring.
  • the apparatus At the front of a cylinder head, carrying a spark plug and a motor-fan, these elements of the apparatus not being shown, any more than the grip and actuation handle, the gas cartridge and the anchor loader, the apparatus comprises a chamber sleeve 1, a cylinder 2, with a front portion 3 of reduced section, a chamber 4 for closing a chamber and a feeler 5.
  • the probe 5, moreover conventional, is integral in translation with the cage, here by screw cage, a semi-tubular front portion 6 envelops the rear of the probe.
  • the front portion 6 of the cage 4 is extended rearwardly by two lateral arms 7, 8 whose rear end 9 is bent towards the axis 16 of the apparatus to form a connecting nose.
  • the two arms 7, 8 of the cage extend along the cylinder 2, outside, to the front part 10 of the chamber sleeve 1.
  • the cylinder 2 On its outer wall, the cylinder 2 carries radial support lugs 11 to serve as stops for the chamber sleeve 1 in the closed position, and, behind the support lugs 11, radial support cheeks 12 , serving as stops to the springs 13 for returning the chamber to the open position.
  • the rear 14 of the chamber sleeve 1 partially forms the combustion chamber 15 of the apparatus.
  • a propulsion piston 17 In the cylinder 2 is mounted a propulsion piston 17, with its head 18, also partly forming the chamber 15, and its propulsion rod 19.
  • the cylinder comprises a rear bead 20 in which is formed a receiving groove of a seal 21 intended, in the closed position, to ensure, with the chamber sleeve 1, the front seal of the combustion chamber 15.
  • the chamber sleeve 1 in the middle part and in a transverse section perpendicular to the axis 16, has, in the axial extension of a bulge of the chamber sleeve which will be discussed below, a portion of inner rib 22 cooperating with the seal 21 in the closed position.
  • anterior part 10 of the chamber sleeve which will now be more precisely described. It comprises here, at the edge of the sleeve and diametrically opposite in the axial plane of the section of FIG. 2, two support, thrust and connection assemblies 23, 24. Each assembly is housed in an external bulge 25 of the wall 26, with a flat bottom 27, extending from the edge 28 of the sleeve over a relatively small axial width. Inside each bulge, and with the same axial width, is a cradle 29 consisting of two bearing pads 30, 31 symmetrical with respect to the axial plane defined above, matching the bulge and each a small portion of the inner wall 32 of the sleeve.
  • a connecting pin 33 passes through each bulge and its two pads 30, 31 perpendicularly to the same axial plane.
  • a radial bearing lug 34 extends between the two bearing pads of each cradle 29, in the manner of an inner bottom, opposite the front edge 28 of the sleeve.
  • the springs 13 for returning the chamber in the open position, resting against the radial bearing faces 12 of the cylinder 2, are also respectively in abutment against the support lugs 34 of the chamber sleeve 1.
  • the beak of connection 9 of each arm 7, 8 it has passed, by its free end portion 35, turned towards the axis 16, behind the associated connecting pin 33.
  • the end portion 35 of a connecting spout 9 of a cage arm 7, 8 can here, relative to the chamber sleeve 1, be driven in relative sliding on a play stroke of length equal to the distance separating the support lug 34 and the connecting pin 33 of the associated cradle 29, which qualifies the sliding connection of the cage and the connection sleeve with clearance.
  • This degree of freedom here avoids the propagation of stresses.
  • the cage and the sleeve could be slidably linked without play.
  • the device is then ready for shooting.
  • the expansion of the springs 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve abut against dampers 36 against the support cheeks 12 of the cylinder and that the device is in the open combustion chamber position.
  • the thrust lugs 34 also slide forwardly the connecting jaws 9 and thus the arms 7, 8 of the cage 6. Under the action of its weight, the cage may possibly continue its forward travel until the connecting arms 9 abut against the pins 33.
  • the support pads 30, 31 are made of a damping material to better dampen shocks.
  • these pads 30, 31 comprise at least one transverse rear support slice 39 intended to abut against a bearing lug 11 which, it is in a damping material, slice attached to the pad, in particular by gluing, welding.
  • each set is replaced by a single support pad, thrust and link 43, 44 shaped in a particular way.
  • its shape is such that it can also be housed in one of the outer bulges 25, such as the cradles 29.
  • it comprises a connecting elbow 45 and a thrust and support finger 46 extending the connecting elbow 45.
  • the arcuate connecting elbow 45 receives, in its concave internal groove, a connecting pin 33 which passes through the associated bulge 25.
  • the connecting elbow 45 and the pushing finger support 46 are connected to each other by a bridge by providing between them a groove 47 for receiving the connecting lug 9 of the associated cage arm 7, 8.
  • the thrust and bearing finger 46 extends in a cylindrical shape from a base 48, of larger section than the finger 46, by providing an annular shoulder 49 of the abutment 13 of the opening spring of the chamber abutting at its other end against the support cheek 12 of the cylinder 2.
  • the cage 4 When the device bears against a receiving material, the cage 4, via the probe, is pushed towards the rear of the device.
  • the cage 4 through the jaws 9 and fingers 46 of the pads, acting as pushing member, pushes the chamber sleeve 1 along the cylinder 2, compressing the return springs 13 (FIG. 5), until the fingers 46 of the support pads 42, 44 abut against the support cheeks 12 of the cylinder 2 ( Figure 6) and that, thus, the combustion chamber 15 is closed, with sealing before assured.
  • the device is then ready for shooting.
  • the expansion of the springs 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve abut against dampers 36 against the support cheeks 12 of the cylinder and that the device is in the open combustion chamber position.
  • the thrust fingers 46 also slide forwardly the connecting jaws 9 and thus the arms 7, 8 of the cage 4.
  • the pads 43, 44, with their connecting elbow 45 and their thrust and bearing finger 46, are advantageously made of a damping material, preferably elastomer, to better dampen shocks.
  • the pads 43, 44 may comprise at least one transverse rear support slice 50 of damping material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Actuator (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (10)

  1. Gasbetriebene Vorrichtung, bei der unter Wirkung der Explosion eines Luft- und Gasgemisches in einer Kammer (15), die bei Einsatz der Vorrichtung durch eine Kammerhülse (1) und einen Käfig (6) geschlossen ist, ein Kolben (17) in einen Zylinder (2) getrieben wird, um ein Element anzutreiben, dadurch gekennzeichnet, dass die Kammerhülse (1) und der Zylinder (2) so angeordnet sind, dass die Kammerhülse (1) beim Schließen der Kammer (15) an den Zylinder (2) anstößt.
  2. Vorrichtung nach Anspruch 1, bei der die Kammerhülse (1) mindestens einen Stift (33) zur Verbindung der Kammerhülse (1) und des Käfigs (6) aufweist.
  3. Vorrichtung nach einem der Ansprüche 1 und 2, bei der der Käfig (6) und die Kammerhülse (1) mit einem Gleitspiel verbunden sind.
  4. Vorrichtung nach Anspruch 3, bei der die Kammerhülse (1) mindestens einen Stützschuh (30, 31) aufweist, der zum Anstoßen an einen Stützlappen (11) des Zylinders (2) angeordnet ist.
  5. Vorrichtung nach einem der Ansprüche 3 und 4, bei der die Kammerhülse (1) mindestens einen Lappen (34) aufweist, der als Stütze für eine Öffnungsfeder (13), die auch an einer Wange (12) des Zylinders (2) anliegt, sowie als Glied dient, durch das die Kammerhülse (1) und der Käfig (6) gegeneinander drücken können.
  6. Vorrichtung nach einem der Ansprüche 3 bis 5, bei der sich das relative Gleitspiel des Käfigs (6) und der Kammerhülse (1) über einen Längsweg erstreckt, der gleich dem einen Stütz- und Drucklappen (34) und den zugehörigen Verbindungsstift (33) trennenden Abstand ist.
  7. Vorrichtung nach einem der Ansprüche 1 und 2, bei der die Kammerhülse (1) mindestens einen Stütz-, Druck- und Verbindungsschuh (43, 44), der so angeordnet ist, dass er in Schließstellung an eine Stützwange (12) des Zylinders (2) anstößt, mindestens eines Stift (33) zur Verbindung der Kammerhülse (1), des Stützschuhs (43, 44) und des Käfigs (4) und mindestens eine an der Stützwange (12) und den Stützschuh (43, 44) anliegende Feder (13) zum Öffnen der Kammer aufweist.
  8. Vorrichtung nach Anspruch 7, bei der der Schuh (43, 44) mit einem Stützfinger (46) mit verengtem Querschnitt versehen ist, der zum Anstoßen an die Wange (12) des Zylinders (2) und zur Aufnahme der Öffnungsfeder (13) angeordnet ist.
  9. Vorrichtung nach Anspruch 8, bei der jeder Stütz- und Druckschuh (43, 44) ein Verbindungskniestück (45) aufweist, in dem der zugehörige Verbindungsstift (33) aufgenommen wird und das unter Bildung einer Nut (47) zur Aufnahme eines Vorsprungs (9) zur Verbindung des Käfigs (4) mit dem Finger (46) verbunden ist.
  10. Vorrichtung nach einem der Ansprüche 4 und 7, bei der die Stützschuhe (30, 31; 43, 44) mindestens einen hintere Querstützrand (39; 50) aufweisen.
EP04291868A 2003-07-29 2004-07-23 Gasbetriebenes Eintreibwerkzeug mit Kolben Active EP1502709B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0309321A FR2858261B1 (fr) 2003-07-29 2003-07-29 Appareil a fonctionnement a gaz d'entrainement d'un element par piston
FR0309321 2003-07-29

Publications (2)

Publication Number Publication Date
EP1502709A1 EP1502709A1 (de) 2005-02-02
EP1502709B1 true EP1502709B1 (de) 2006-11-29

Family

ID=33523013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291868A Active EP1502709B1 (de) 2003-07-29 2004-07-23 Gasbetriebenes Eintreibwerkzeug mit Kolben

Country Status (12)

Country Link
US (1) US7121441B2 (de)
EP (1) EP1502709B1 (de)
JP (1) JP2005046998A (de)
CN (1) CN100346934C (de)
AT (1) ATE346723T1 (de)
AU (1) AU2004203075B2 (de)
CA (1) CA2473635C (de)
DE (1) DE602004003433T2 (de)
DK (1) DK1502709T3 (de)
ES (1) ES2277220T3 (de)
FR (1) FR2858261B1 (de)
NZ (1) NZ534024A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6964362B2 (en) * 2004-02-06 2005-11-15 Illinois Tool Works Inc. Shock-absorbing system for fastener driving tools
FR2953752B1 (fr) * 2009-12-11 2012-01-20 Prospection & Inventions Outil de fixation a moteur a combustion interne a butee de chambre unique d'ouverture et de fermeture
CN101961860B (zh) * 2010-10-20 2012-04-25 南京腾亚精工科技有限公司 燃气动力射钉枪
JP5652320B2 (ja) * 2011-05-11 2015-01-14 マックス株式会社 打込工具
EP3199301A1 (de) * 2016-02-01 2017-08-02 HILTI Aktiengesellschaft Brennkammer und eintreibgerät
CA2969392C (en) * 2016-06-08 2022-11-22 Tti (Macao Commercial Offshore) Limited Gas spring fastener driver
TWI812797B (zh) * 2019-10-23 2023-08-21 鑽全實業股份有限公司 飛輪式電動釘槍的衝擊裝置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483474A (en) * 1981-01-22 1984-11-20 Signode Corporation Combustion gas-powered fastener driving tool
US4483473A (en) * 1983-05-02 1984-11-20 Signode Corporation Portable gas-powered fastener driving tool
US5199626A (en) * 1990-10-05 1993-04-06 Hitachi Koki Company Limited Combustion gas powered tool
US5197646A (en) * 1992-03-09 1993-03-30 Illinois Tool Works Inc. Combustion-powered tool assembly
FR2730443B1 (fr) * 1995-02-15 1997-04-11 Spit Soc Prospect Inv Techn Appareil de scellement a piston propulse par gaz comprime
US5713313A (en) * 1997-02-07 1998-02-03 Illinois Tool Works Inc. Combustion powered tool with dual fans
US6145724A (en) * 1997-10-31 2000-11-14 Illinois Tool Works, Inc. Combustion powered tool with combustion chamber delay
US5909836A (en) * 1997-10-31 1999-06-08 Illinois Tool Works Inc. Combustion powered tool with combustion chamber lockout
US6016945A (en) * 1997-12-31 2000-01-25 Porter-Cable Corporation Internal combustion fastener driving tool manual recycler
FR2774017B1 (fr) * 1998-01-27 2000-03-17 Spit Soc Prospect Inv Techn Appareil de fixation a piston propulse par gaz comprime
US5988477A (en) * 1998-06-03 1999-11-23 Illinois Tools Works, Inc. Nosepiece shield for combustion powered tool
CA2306618C (en) * 1999-05-18 2005-06-28 Illinois Tool Works Inc. Nosepiece shield for combustion powered tool
JP2001162560A (ja) * 1999-11-22 2001-06-19 Prospection & Inventions Techniques Spit:Soc プラグ取付装置
US20030034377A1 (en) * 2001-08-16 2003-02-20 Porth Chris H. Combustion tool with coil magazine
US6964362B2 (en) * 2004-02-06 2005-11-15 Illinois Tool Works Inc. Shock-absorbing system for fastener driving tools

Also Published As

Publication number Publication date
CA2473635A1 (en) 2005-01-29
ES2277220T3 (es) 2007-07-01
CN1575935A (zh) 2005-02-09
CN100346934C (zh) 2007-11-07
EP1502709A1 (de) 2005-02-02
US7121441B2 (en) 2006-10-17
DE602004003433T2 (de) 2007-10-31
DE602004003433D1 (de) 2007-01-11
AU2004203075B2 (en) 2007-01-25
NZ534024A (en) 2005-03-24
US20050023320A1 (en) 2005-02-03
AU2004203075A1 (en) 2005-02-17
ATE346723T1 (de) 2006-12-15
DK1502709T3 (da) 2007-03-26
FR2858261B1 (fr) 2005-09-09
FR2858261A1 (fr) 2005-02-04
CA2473635C (en) 2008-03-25
JP2005046998A (ja) 2005-02-24

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