EP0467834B1 - Outil de scellement actionné par l'énergie de la poudre - Google Patents

Outil de scellement actionné par l'énergie de la poudre Download PDF

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Publication number
EP0467834B1
EP0467834B1 EP91810536A EP91810536A EP0467834B1 EP 0467834 B1 EP0467834 B1 EP 0467834B1 EP 91810536 A EP91810536 A EP 91810536A EP 91810536 A EP91810536 A EP 91810536A EP 0467834 B1 EP0467834 B1 EP 0467834B1
Authority
EP
European Patent Office
Prior art keywords
housing
barrel
setting tool
setting
tool according
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
EP91810536A
Other languages
German (de)
English (en)
Other versions
EP0467834A2 (fr
EP0467834A3 (en
Inventor
Peter Jochum
Martin Müller
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 EP0467834A2 publication Critical patent/EP0467834A2/fr
Publication of EP0467834A3 publication Critical patent/EP0467834A3/de
Application granted granted Critical
Publication of EP0467834B1 publication Critical patent/EP0467834B1/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
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
    • B25C1/143—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil trigger operated
    • 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
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge

Definitions

  • the invention relates to a powder-operated setting tool with a housing in which a barrel and a closure piece are arranged axially displaceably, the barrel having a receptacle for a propellant charge and the closure piece containing an ignition bolt being supported on the housing by a spring element acting in the setting direction.
  • DE-C-16 03 843 discloses a generic powder-operated setting tool, in which a barrel and a locking piece are slidably mounted in a housing with the aim of reducing the recoil forces which have a disadvantageous effect on the material stress and the operator. Thanks to this displaceable arrangement of barrel and locking piece in the housing, the objective with regard to recoil forces can only be achieved by accepting other disadvantages. These other disadvantages lie in particular in the structural design, since it is no longer possible to tension the firing pin mounted in the locking piece in a conventional and tried and tested manner by pressing the setting tool against the ground. This leads to the fact that in the known solution a hammer acting on the firing pin is arranged in an axis deviating from the firing pin, which requires the provision of a bell crank between the hammer and the firing pin.
  • the invention is therefore based on the object of a powder-operated setting tool of the type mentioned create, which has a recoil-reducing design and also allows a simple tensioning of the firing pin in a conventional manner.
  • the object is achieved in that a latching element is provided between the housing and the closure piece, which can be disengaged while overcoming a predetermined force acting against the setting direction and generated by the gas pressure generated after ignition of the propellant charge and allowing the displacement of the closure piece against the setting direction.
  • the latching element prevents the locking piece from moving in the engaged position by being supported on the housing during the displacement of the barrel, which is achieved by pressing a muzzle part against the ground, so that a tensioning spring supported in the locking piece of the ignition pin can be tensioned by the pressing.
  • the spring element acting in the setting direction on the closure piece can be dimensioned small in terms of force, since it only has the function of displacing the closure piece into the initial position on the setting direction.
  • the force which causes the disengagement of the locking element and is generated by the gas pressure can be considerably greater than the tensioning force for the tensioning spring.
  • the locking element is advantageously arranged on the closure piece. This allows the housing to be protected from mechanical damage from the outside.
  • a stop shoulder facing the setting element for the latching element is expediently provided on the housing.
  • the stop shoulder can, for example, through the boundary wall a recess or an opening in the housing.
  • the locking element is preferably designed as a one-armed rocker arm.
  • One end of the rocker arm can serve as a pivot bearing which is supported in the closure piece, while the other end carries a detent which comes into contact with the stop shoulder on the housing side.
  • the closure piece can have a recess in which the rocker arm is essentially accommodated, the recess being advantageously dimensioned such that the rocker arm can be immersed for disengagement.
  • the rocker arm is advantageously disengaged in that the rocker arm has a control cam that serves to disengage and cooperates with a control cam.
  • the control cam can sit on the closure piece and moves together with the closure piece against the setting direction after the ignition process when the gas pressure is generated.
  • the rocker arm which cannot be moved backwards by being supported on the stop shoulder on the housing side, is disengaged from the control cam via the control cam after covering a certain displacement path of the locking piece and is dragged along by the locking piece which moves further against the setting direction.
  • the locking element is expediently disengaged against the force of a return spring in order to ensure the locking connection between the housing and the closure piece.
  • a return spring spring is suitable, for example, which on the one hand exerts the force for resetting the locking element and on the other hand can serve as an elastic buffer for the closure piece.
  • the setting tool has a housing 1 with a laterally projecting handle 1a.
  • a trigger 2 for triggering the ignition process is arranged in the handle 1a.
  • a mouth part protrudes from the front of the housing 1 against a base.
  • the mouth part in the housing 1 shifts a barrel 5 backwards into the position shown in FIG. 1.
  • a drive pin 6 projecting towards the rear is mounted and held in place by a cross pin 7 so that it cannot move.
  • a closure piece 8 is slidably mounted in an essentially tubular guide body 9 of the housing 1.
  • the guide body 9 is contained in a plastic shell 11 of the housing 1.
  • a locking element 12 in the form of a one-armed rocker arm is mounted in the closure piece 8.
  • the latching element 12 protrudes with the front end 12a into a bearing bore 8a of the closure piece 8.
  • the other end of the locking element 12 has a laterally projecting locking lug 12b, which in the ready-to-fire position (FIG. 1) is inserted into a window-like recess 9a of the housing 1 or of the guide body 9 and is supported to the rear on a stop shoulder 9b formed by the recess 9a .
  • a return spring 13 consisting of stacked disc springs holds the locking element 12 in the engaged position.
  • the return spring 13 is supported by washers 14, 15 to the rear on a shoulder 12c of the latching element 12 and to the front on a shoulder 8b of the closure piece 8.
  • the return spring 13 is mounted biased on the locking element 12, wherein a stop pin 16 is provided to maintain the preload as a support bearing for the disk 15 on the locking element 12.
  • an ignition pin 17 is also slidably mounted. This has on the front a laterally projecting driving cam 17a.
  • the driving cam 17a protrudes into the axial projection of the driving pin 6 protruding into the closure piece 8.
  • the driving pin 6 takes the ignition pin 17 against the force of a tension spring 18 supported on the rear side in the closing piece 8 while engaging the driving cam 17a Ready to ignite with.
  • the firing pin 17 In order to ignite a propellant charge 19 seated in a receptacle 5a in the barrel 5, the firing pin 17 has an ignition tip 17b which projects forward. This can penetrate to the propellant charge 19 by reaching through a passage opening 8c in the closure piece 8.
  • the receptacle 5a is connected via a channel 5b to the barrel bore 5c, in which a driving piston 21 is displaceably mounted in a known manner.
  • a retraction spring 22 On the rear, a retraction spring 22 is seated on the firing pin 17, which is supported on the firing pin 17 via a disk 23 to the rear and via a support ring 24 to the front.
  • the locking piece 8 is acted upon by a spring element 25 which is supported on the housing 1 or on the guide body 9, that is to say in the setting direction.
  • the tension of the spring element 25 is not influenced by the displacement of the firing pin 17 in the ready-to-fire position, since the tensioning forces are supported on the housing 1 by the locking piece 8 via the engaged locking element 12.
  • the spring element 25 can therefore be dimensioned small in terms of force, since it only has to fulfill the function of pushing the closure piece 8 into the position which can be seen in FIG. 1.
  • the initiation of the ignition process takes place by actuating the trigger 2, whereby the ignition pin 17 is rotated by means known per se and not shown in more detail and thereby the driving cam 17a comes out of the effective range of the driving pin 6.
  • the firing pin 17 is then driven by the tensioned tension spring 18 against the propellant charge 19, which is thus ignited by the firing tip 17b.
  • the firing pin 17 is then retracted by the retraction spring 22 to such an extent that the firing tip 17b is at a distance from the propellant charge 19.
  • the gas pressure resulting from the ignition of the propellant charge 19 acts on the propellant piston 21. This is accelerated in the barrel bore 5c for driving a fastening element into an underground in the setting direction. However, the gas pressure also generates forces acting against the setting direction on the barrel 5 and on the closure piece 8. These forces exceed the tension force of the return spring 13, so that a relative displacement of the closure piece 8 with respect to the latching element 12 occurs.
  • a control cam 8d on the closure piece 8 with a control cam 12d on the locking element 12 this relative displacement leads to the locking element 12 being disengaged from the recess 9a. This takes place against the force of the return spring 13 by pivoting the locking element 12 around the front end 12a serving as the articulation point in the bearing bore 8a.
  • the locking element 12 slides with the locking lug 12b along the inner contour of the guide body 9, as shown in FIG. 2.
  • the locking element 12 is supported against the setting direction on a back 8e of the closure piece 8.
  • the closure piece 8 is again driven into the ignition-ready position shown in FIG. 1 by the force of the spring element 25.
  • the moving locking element 12 thus comes with the locking lug 12b back into the region of the recess 9a and is engaged by the return spring 13 by pivoting.

Claims (6)

  1. Outil de scellement actionné par l'énergie de la poudre, comprenant un carter (1) dans lequel sont montés de manière axialement mobile un canon (5) et un obturateur (8), le canon (5) comportant un logement (5a) pour une charge propulsive (19), et l'obturateur (8) équipé d'un percuteur (17) prenant appui sur le carter (1) par l'intermédiaire d'un élément de ressort (25) agissant dans la direction de pose, caractérisé en ce qu'entre le carter (1) et l'obturateur (8) est prévu un élément d'arrêt (12) débrayable qui, en surmontant une force prédéterminée générée par la pression de gaz créée après la mise à feu de la charge propulsive (19) et agissant dans un sens opposé à la direction de pose, permet le déplacement de l'obturateur (8) dans le sens opposé à la direction de pose.
  2. Outil de scellement selon la revendication 1, caractérisé en ce que l'élément d'arrêt (12) est disposé sur l'obturateur (8).
  3. Outil de scellement selon la revendication 2, caractérisé en ce que sur le carter (1) est prévu un épaulement d'arrêt (9b) pour l'élément d'arrêt (12), tourné dans la direction de pose.
  4. Outil de scellement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'élément d'arrêt (12) est réalisé sous la forme d'un levier basculant à un seul bras.
  5. Outil de scellement selon la revendication 4, caractérisé en ce que le levier basculant comprend une came de commande (12d) qui assure le débrayage et coopère avec une came radiale (8d).
  6. Outil de scellement selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément d'arrêt (12) peut être débrayé contre la force d'un ressort de rappel (13).
EP91810536A 1990-07-17 1991-07-08 Outil de scellement actionné par l'énergie de la poudre Expired - Lifetime EP0467834B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4022673 1990-07-17
DE4022673A DE4022673A1 (de) 1990-07-17 1990-07-17 Pulverkraftbetriebenes setzgeraet

Publications (3)

Publication Number Publication Date
EP0467834A2 EP0467834A2 (fr) 1992-01-22
EP0467834A3 EP0467834A3 (en) 1992-06-03
EP0467834B1 true EP0467834B1 (fr) 1994-03-09

Family

ID=6410430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810536A Expired - Lifetime EP0467834B1 (fr) 1990-07-17 1991-07-08 Outil de scellement actionné par l'énergie de la poudre

Country Status (14)

Country Link
US (1) US5114064A (fr)
EP (1) EP0467834B1 (fr)
JP (1) JP2756380B2 (fr)
KR (1) KR0181505B1 (fr)
AT (1) ATE102533T1 (fr)
AU (1) AU640802B2 (fr)
CA (1) CA2047106C (fr)
CZ (1) CZ279462B6 (fr)
DE (2) DE4022673A1 (fr)
DK (1) DK0467834T3 (fr)
ES (1) ES2050046T3 (fr)
FI (1) FI99093C (fr)
HU (1) HU209677B (fr)
PL (1) PL166606B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10107979B4 (de) * 2001-02-19 2012-12-13 Hilti Aktiengesellschaft Setzgerät

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269450A (en) * 1993-02-10 1993-12-14 Illinois Tool Works, Inc. Hammer-strikable, powder-actuated, fastener-driving tool
US5337566A (en) * 1993-03-18 1994-08-16 Burndy Corporation Powder actuated compression tool
US5425488A (en) * 1993-11-05 1995-06-20 Thompson William J Impact actuated tool for driving fasteners
DE19532411A1 (de) * 1995-09-01 1997-03-06 Hilti Ag Pulverkraftbetriebenes Setzgerät
US5715983A (en) * 1996-10-10 1998-02-10 Lee; Cheng-Ho Firing mechanism for a staple gun
DE19831053A1 (de) * 1998-07-13 2000-01-20 Hilti Ag Pulverkraftbetriebenes Setzgerät
US6059162A (en) * 1998-10-16 2000-05-09 Illinois Tool Works Inc. Exhaust baffle and spring assisted reset and dampener for powder actuated tool
DE10105196B4 (de) * 2001-02-06 2013-09-26 Hilti Aktiengesellschaft Setzgerät
DE10251307B4 (de) * 2002-11-04 2014-04-10 Hilti Aktiengesellschaft Brennkraftbetriebenes Setzgerät
US7237705B2 (en) * 2004-08-09 2007-07-03 Powers Products Iii, Llc Firing pin actuation and reset mechanism for a powder actuated setting tool and method
DE102005006167B4 (de) * 2005-02-10 2017-01-12 Hilti Aktiengesellschaft 10.02.2005Brenngasbetriebenes Setzgerät
DE102005006168B4 (de) * 2005-02-10 2017-01-12 Hilti Aktiengesellschaft Brenngasbetriebenes Setzgerät
DE102007000226A1 (de) * 2007-04-13 2008-10-16 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
US20120000960A1 (en) * 2010-02-12 2012-01-05 Fernando Masas Apparatus for installing explosively driven fasteners and fasteners for use therewith
CN105269528B (zh) * 2015-11-16 2018-03-27 宜宾伊力科技股份有限公司 一种射钉器
EP3184256A1 (fr) * 2015-12-23 2017-06-28 HILTI Aktiengesellschaft Cloueur a poudre

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
BE521711A (fr) * 1953-01-24
DE1224218B (de) * 1964-09-17 1966-09-01 Tornado Gmbh Bolzensetzgeraet
DE1603843C3 (de) 1967-10-02 1981-04-30 Hilti AG, 9494 Schaan Pulverkraftbetriebenes Bolzensetzgerät der Treibkolbenbauart
US4015512A (en) * 1974-10-29 1977-04-05 Feerick Jay J Gas-operated firearm
GB2045673B (en) * 1979-04-10 1983-03-23 Prospection & Inventions Powder actuated piston tool with power adjustment
US4389920A (en) * 1981-02-20 1983-06-28 Dufour Sr Joseph H Semiautomatic firearm
US4493376A (en) * 1982-07-02 1985-01-15 Uniset Corporation Fastener driving tool
US4655380A (en) * 1983-05-24 1987-04-07 Pneutek, Inc. Powder-actuated fastener-driving tool
DE3606514A1 (de) * 1986-02-28 1987-09-03 Hilti Ag Pulverkraftbetriebenes bolzensetzgeraet
US4804127A (en) * 1987-09-21 1989-02-14 Master Machine Corporation Fastener driving gun
US4821938A (en) * 1987-11-25 1989-04-18 Haytayan Harry M Powder-actuated fastener driving tool
US4945730A (en) * 1989-05-11 1990-08-07 Burndy Corporation Power activated tool with safety power cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10107979B4 (de) * 2001-02-19 2012-12-13 Hilti Aktiengesellschaft Setzgerät

Also Published As

Publication number Publication date
FI99093C (fi) 1997-10-10
DE4022673A1 (de) 1992-01-23
CZ279462B6 (cs) 1995-05-17
AU8111691A (en) 1992-01-23
FI913340A (fi) 1992-01-18
KR0181505B1 (ko) 1999-05-01
EP0467834A2 (fr) 1992-01-22
CS219691A3 (en) 1992-02-19
US5114064A (en) 1992-05-19
DK0467834T3 (da) 1994-07-11
HU912378D0 (en) 1991-12-30
AU640802B2 (en) 1993-09-02
FI99093B (fi) 1997-06-30
JP2756380B2 (ja) 1998-05-25
ES2050046T3 (es) 1994-05-01
PL291094A1 (en) 1992-01-27
EP0467834A3 (en) 1992-06-03
HUT58583A (en) 1992-03-30
HU209677B (en) 1994-10-28
CA2047106C (fr) 1998-03-31
ATE102533T1 (de) 1994-03-15
KR920002276A (ko) 1992-02-28
CA2047106A1 (fr) 1992-01-18
PL166606B1 (pl) 1995-06-30
FI913340A0 (fi) 1991-07-10
JPH04226873A (ja) 1992-08-17
DE59101146D1 (de) 1994-04-14

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