EP0931626B1 - Appareil de fixation à piston propulsé par gaz comprimé - Google Patents

Appareil de fixation à piston propulsé par gaz comprimé Download PDF

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Publication number
EP0931626B1
EP0931626B1 EP99400187A EP99400187A EP0931626B1 EP 0931626 B1 EP0931626 B1 EP 0931626B1 EP 99400187 A EP99400187 A EP 99400187A EP 99400187 A EP99400187 A EP 99400187A EP 0931626 B1 EP0931626 B1 EP 0931626B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
sleeve
abutment
combustion chamber
fixedly attached
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.)
Expired - Lifetime
Application number
EP99400187A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0931626A1 (fr
Inventor
Frédéric Nayrac
Guy Jaillet
Patrick Herelier
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
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 Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP0931626A1 publication Critical patent/EP0931626A1/fr
Application granted granted Critical
Publication of EP0931626B1 publication Critical patent/EP0931626B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 piston pad fixing device powered by compressed gas comprising a buffer guide, a cylinder in which is mounted the piston, a combustion chamber sleeve intended to close the chamber at the rear with a cylinder head and at the front with the piston and the cylinder, a sensor for closing the chamber, an injection pipe for compressed gas in the chamber from a compressed gas cartridge and ignition means intended to explode the gas contained in the combustion chamber during a shot.
  • document EP-0 788 863 proposes an apparatus of the type defined above, in which the buffer guide makes probe function for pressing and closing the chamber combustion, and comprising mechanical isolation springs arranged between the cylinder and a pad guide holder integral with the pad guide, the cylinder can move forwards with respect to the pad guide holder, against the action of the insulation springs.
  • the cylinder is driven forward and compresses the springs then, on firing, under the action of the recoil force, the cylinder moves back and releases the springs, the buffer guide thus being held in abutment against the material thanks to the insulation springs.
  • Such an apparatus has a relatively complex structure. Furthermore, when when the device is pressed down, an operator must try to compress the insulation spring.
  • the present invention proposes to solve these problems.
  • the invention relates to a tampon fixing device in a support, with piston propelled by compressed gas comprising a cylinder in which is mounted the piston, a combustion chamber, a sleeve combustion chamber intended to close the chamber, at the rear, with a cylinder head and, at the front, with the piston and the cylinder, a buffer guide making probe function for pressing and closing the chamber combustion, apparatus characterized in that it comprises a surface of thrust and a bearing surface, respectively integral with the buffer guide and of the sleeve and arranged to join in translation backwards, when the buffer guide is pressed, in order to close the combustion, and to dissociate when the device recedes in reaction to a shot, in order to maintain the support of the buffer guide against the support.
  • the sleeve and the feeler pad guide cooperating with a single press may retreat, on retreat in reaction to the explosion of compressed gas in the combustion chamber, without driving the buffer guide.
  • the device comprises means for driving towards the rear of the sleeve, integral with the sleeve, and which are integral said front bearing surface.
  • the drive means comprise at least an integral drive arm, at one of its ends, a support finger provided with said front bearing surface.
  • the buffer guide may include a groove for receiving the support finger, provided with a front wall acting as a pushing surface.
  • the device comprises a housing which is secured to the cylinder and a pad guide holder secured to the cylinder, in which the buffer guide is slidably mounted.
  • the cylinder could move relative to the door pad guide integral with the pad guide, while in the invention, the cylinder is integral with the buffer guide door in which is mounted sliding the pad guide, which turns out to be a simpler structure to achieve.
  • the fixing device may also include means for returning to the front of the drive means, in order to recall the buffer guide towards the front, in a rest position, when removed from support.
  • the fixing device shown comprises, conventionally, in a case 1, rear cylinder head 2, combustion chamber 3, sleeve combustion chamber 4, a cylinder 5, a piston 6, a buffer guide 8 and a door of the buffer guide 7. All these elements of the apparatus are of axis 9.
  • the piston 6, provided with a rear head, is slidably mounted in the cylinder 5 which is integral with the housing 1.
  • the sliding of the pad guide 2 in the pad guide holder 7 is limited by a bush 42, integral with the pad guide holder 7, comprising a part front 13 mounted around the pad guide holder 7 and a part posterior 44, narrowed, surrounding the buffer guide 8, in line with a opening 47 made in the buffer guide holder 7.
  • the rear part 44 of the sleeve 42 is slidably mounted on the buffer guide 8 between front 45 and rear 46 stops of the buffer guide 8 in order to limit the relative sliding of the latter relative to the buffer guide holder 7.
  • the combustion chamber sleeve 4 is slidably mounted on the cylinder 5 and comprises, at the rear, a neck 10 provided with an annular rim rear 11 and intended to be fitted around a corresponding part 12 of the cylinder head 2 until the flange 11 abuts against a surface corresponding 13 of the cylinder head 2, in order to close the combustion chamber 3 at the back.
  • Part 12 includes an external annular groove carrying a seal 14.
  • the sleeve 4 is also intended to close the combustion 3, at the front, with the piston 6 and the cylinder 5 which saves rear an external annular groove carrying a seal 15. Seals 14 and 15 are intended to seal respectively between the sleeve 4 and the cylinder head 2 and between cylinder 5 and sleeve 4.
  • the head of piston 6 houses two external peripheral annular grooves bearing seals 6 ', 6 "intended to ensure the seal between the cylinder 5 and the piston head 6.
  • the apparatus further comprises a housing for receiving a cartridge of compressed gas, not shown.
  • An injection pipe connected to the cartridge compressed gas, opens into the combustion chamber 3, through the cylinder head 2, for injecting the compressed gas into chamber 3.
  • the injection pipe is not shown.
  • the cylinder head 2 carries a mixing fan 16, a firing device, not shown, and a switch 17 for controlling the fan 16 intended to be actuated by the rear edge 11 of the neck 10 when the latter comes into abutment against the surface 13 of the cylinder head 2.
  • the cylinder 5 contains at the front a shock absorber 18, integral with the cylinder 5, against which the head of the piston 6, propelled forward during a shot, is intended to come up against.
  • a buffer supply magazine 19 communicates with the buffer guide 8, for loading the buffer into the buffer guide 8.
  • Two arms 20, 21 for driving towards the rear of the sleeve 4, symmetrical from each other with respect to the axis 9, extend substantially along and at the outside of the buffer guide holder 7 and of the cylinder 5 and are secured, here by screwing, from the sleeve 4, at their rear ends.
  • the two drive arms 20, 21 are connected to each other by a part link 22, at their anterior ends.
  • the finger 23 extends through a light 27, formed in the buffer guide holder 7, and is received in a groove 25 external formed in the buffer guide 8 and parallel to the axis 9.
  • connection part 22 household a lumen 48 for passing the screws 41 extending parallel to the axis 9 and allowing the finger 23 and the set of two arms 20 to be offset axially, 21 and part 22, depending on the desired penetration of the tampon into the support.
  • the buffer guide 8 acts as a pressing and closing feeler of the combustion chamber 3, via the drive arms 20, 21.
  • Each of the drive arms 20, 21 comprises, in the vicinity of its rear end, a thrust pin 24, 26 folded towards the cylinder 5, substantially at right angles.
  • the two push fingers 24, 26 are mounted sliding on cylinder 5 respectively against the action of two springs 35, 36 forwards forward which are in support, at the rear, against two bearing surfaces 37, 38 of the cylinder 5 and, at the front, against the fingers 24, 26.
  • the springs 35, 36 are intended to return towards the front, in the position of rest, the drive arms 20, 21 and therefore the sleeve 4, when from the support outlet of the device, as will be explained in the description of the device's operation.
  • the cylinder 5 further comprises two external front stops 39, 40, for the fingers 24, 26, symmetrical to one another with respect to the axis 9, intended to limit the forward sliding of the arms 20, 21 relative to the cylinder 5.
  • the buffer guide 8 When the device presses against the support 100, the buffer guide 8 is driven rearward relative to the buffer guide holder 7, to the cylinder 5 and the housing 1.
  • the thrust surface 30 of the buffer guide 8 and the surface support 29 integral with the drive arms 20, 21, bearing one against the other, are integral in rearward translation. Therefore, under the action of moving the buffer guide 8, the drive arms 20, 21 drive the sleeve 4 towards the rear, until the rear edge 11 of the neck 10 of sleeve 4 comes to abut against surface 13 of cylinder head 2.
  • the combustion chamber 3 In this position of the sleeve 4, the combustion chamber 3 is closed at the rear by the cylinder head 2 and, at the front, by the head of the piston 6 and the cylinder 5 ( Figures 3 and 4).
  • the firing device On firing, the firing device explodes the compressed gas contained in combustion chamber 3, which creates pressure inside the chamber 3 under the action of which the piston 6 is propelled forward. A buffer having been placed in the buffer guide 8, the piston 6 comes strike the tampon which is propelled forward and fixes itself in the support 100. At the end of the stroke, the head of the piston 6 abuts against the damper 18.
  • the shot causes in reaction a recoil force which tends to recoil the device.
  • the bearing surface 29 of the finger 2 secured to the arms 20, 21 is detached from the pushing surface 30 of the buffer guide 8 so that the buffer guide 8 does not move back and the supporting finger 23 slides backwards in the throat of reception 25. Thanks to this, the buffer guide 8 is held in abutment against the support 100, despite the decline in the cylinder head-housing-cylinder-door assembly buffer guide-sleeve-drive arm 2, 1, 5, 7, 4, 20, 21.
  • the combustion gases escape from the cylinder 5 and the combustion chamber 3, in a known manner, by a valve exhaust.
  • the piston 6 is driven rearward by vacuum and returns to the rest position.
  • the return springs 35, 36 relax and drive forward the drive arms 20, 21, the buffer guide 8 and the sleeve 4 which return to the rest position.
  • the combustion chamber 3 thus opens again at the rear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Fluid-Damping Devices (AREA)
  • Telephone Function (AREA)
  • Compressor (AREA)
  • Reciprocating Pumps (AREA)
EP99400187A 1998-01-27 1999-01-27 Appareil de fixation à piston propulsé par gaz comprimé Expired - Lifetime EP0931626B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9800840A FR2774017B1 (fr) 1998-01-27 1998-01-27 Appareil de fixation a piston propulse par gaz comprime
FR9800840 1998-01-27

Publications (2)

Publication Number Publication Date
EP0931626A1 EP0931626A1 (fr) 1999-07-28
EP0931626B1 true EP0931626B1 (fr) 2003-04-16

Family

ID=9522199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400187A Expired - Lifetime EP0931626B1 (fr) 1998-01-27 1999-01-27 Appareil de fixation à piston propulsé par gaz comprimé

Country Status (10)

Country Link
US (1) US6138887A (xx)
EP (1) EP0931626B1 (xx)
AT (1) ATE237434T1 (xx)
AU (1) AU709218B1 (xx)
CA (1) CA2260357C (xx)
DE (1) DE69906833T2 (xx)
ES (1) ES2196733T3 (xx)
FR (1) FR2774017B1 (xx)
NO (1) NO311752B1 (xx)
NZ (1) NZ333932A (xx)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10228036B4 (de) * 2002-06-24 2014-05-28 Hilti Aktiengesellschaft Über expandierende Gase angetriebbares Setzgerät mit Magazin für Befestigungselemente
US6695192B1 (en) 2002-09-30 2004-02-24 Illinois Tool Works Inc. Adjustable depth control for fastener driving tool
FR2855444B1 (fr) * 2003-06-02 2005-08-05 Prospection & Inventions Appareil a chambre de combustion a fonctionnement a gaz
JP4239731B2 (ja) * 2003-07-04 2009-03-18 マックス株式会社 動力駆動釘打機のコンタクト機構
FR2858261B1 (fr) * 2003-07-29 2005-09-09 Prospection & Inventions Appareil a fonctionnement a gaz d'entrainement d'un element par piston
JP2005212060A (ja) * 2004-01-30 2005-08-11 Hitachi Koki Co Ltd 燃焼式動力工具
US6964362B2 (en) * 2004-02-06 2005-11-15 Illinois Tool Works Inc. Shock-absorbing system for fastener driving tools
US7201301B2 (en) * 2004-02-09 2007-04-10 Illinois Tool Works Inc. Exhaust system for combustion-powered fastener-driving tool
US7971768B2 (en) * 2004-05-04 2011-07-05 Illinois Tool Works Inc. Guidance system for fasteners
US7097083B2 (en) * 2004-09-01 2006-08-29 Illinois Tool Works Inc. Cage and offset upper probe assembly for fastener-driving tool
US20060091177A1 (en) * 2004-10-29 2006-05-04 Cannaliato Michael F Operational lock and depth adjustment for fastening tool
US20060091176A1 (en) * 2004-10-29 2006-05-04 Cannaliato Michael F Cordless fastening tool nosepiece with integrated contact trip and magazine feed
US20070108249A1 (en) * 2005-11-17 2007-05-17 Moeller Larry M Motor control for combustion nailer based on operating mode
DE102006000025A1 (de) * 2006-01-25 2007-07-26 Hilti Ag Setzgerät
US8550324B2 (en) * 2006-05-23 2013-10-08 Black & Decker Inc. Depth adjustment for fastening tool
US7427008B2 (en) * 2006-10-25 2008-09-23 Black & Decker Inc. Depth adjusting device for a power tool
US8152038B2 (en) * 2007-03-16 2012-04-10 Illinois Tool Works Inc. Nose assembly for a fastener driving tool
US8220686B2 (en) * 2007-07-17 2012-07-17 Illinois Tool Works Inc. Actuator pin guide for a fastener driving tool
TWI361128B (en) * 2009-03-18 2012-04-01 Basso Ind Corp A demountable safety device of a power tool
CN201389838Y (zh) * 2009-03-27 2010-01-27 张汉勤 射钉发射装置
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
CN202318236U (zh) * 2011-11-11 2012-07-11 张桂琼 一种多功能射钉枪
EP3034238A1 (de) * 2014-12-19 2016-06-22 HILTI Aktiengesellschaft Eintreibgerät mit verstellbarer Brennkammer
CN105500290A (zh) * 2016-02-14 2016-04-20 重庆双伟机械有限公司 一种气体燃烧式冲击工具
CN106216172B (zh) * 2016-08-31 2019-01-15 佛山市南海新达高梵实业有限公司 一种全自动上木榫设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405072A (en) * 1980-05-28 1983-09-20 Hilti Aktiengesellschaft Setting device powered by an explosive gas mixture
US4566619A (en) * 1980-07-24 1986-01-28 The Kiesel Co. Pneumatic fastener-driving tool and method
US5083694A (en) * 1991-06-11 1992-01-28 Stanley-Bostitch, Inc. Fastener driving device with sequential actuation trigger assembly
US5197646A (en) * 1992-03-09 1993-03-30 Illinois Tool Works Inc. Combustion-powered tool assembly
US5263842A (en) * 1992-03-30 1993-11-23 Stanley-Bostitch, Inc. Nail driver with improved nosepiece assembly
US5261587A (en) * 1993-01-04 1993-11-16 Illinois Tool Works Inc. Fastener-driving tool with improved, adjustable, tool-actuating structures
US5263626A (en) * 1992-12-29 1993-11-23 Illinois Tool Works Inc. Fastener-driving tool with actuating structure biased by dual biasing means
JP3239579B2 (ja) * 1993-02-05 2001-12-17 日立工機株式会社 釘打機
US5320268A (en) * 1993-04-13 1994-06-14 Illinois Tool Works Inc. Powered dimple-forming and fastener-driving tool
FR2730443B1 (fr) * 1995-02-15 1997-04-11 Spit Soc Prospect Inv Techn Appareil de scellement a piston propulse par gaz comprime
JPH08290370A (ja) * 1995-04-19 1996-11-05 Japan Power Fastening Co Ltd ガス燃焼式の可搬式打ち込み工具
US5799855A (en) * 1996-02-09 1998-09-01 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools

Also Published As

Publication number Publication date
CA2260357C (en) 2002-07-09
ES2196733T3 (es) 2003-12-16
ATE237434T1 (de) 2003-05-15
NZ333932A (en) 2000-07-28
EP0931626A1 (fr) 1999-07-28
DE69906833D1 (de) 2003-05-22
AU709218B1 (en) 1999-08-26
NO311752B1 (no) 2002-01-21
NO990352L (no) 1999-07-28
US6138887A (en) 2000-10-31
NO990352D0 (no) 1999-01-26
CA2260357A1 (en) 1999-07-27
DE69906833T2 (de) 2004-01-22
FR2774017A1 (fr) 1999-07-30
FR2774017B1 (fr) 2000-03-17

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