EP0775554B1 - Bolt driving tool with shock absorber - Google Patents

Bolt driving tool with shock absorber Download PDF

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Publication number
EP0775554B1
EP0775554B1 EP96810639A EP96810639A EP0775554B1 EP 0775554 B1 EP0775554 B1 EP 0775554B1 EP 96810639 A EP96810639 A EP 96810639A EP 96810639 A EP96810639 A EP 96810639A EP 0775554 B1 EP0775554 B1 EP 0775554B1
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EP
European Patent Office
Prior art keywords
guide
housing
piston
piston guide
firing pin
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
EP96810639A
Other languages
German (de)
French (fr)
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EP0775554A1 (en
Inventor
Anton Hirtl
Norbert Pfister
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
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Hilti AG
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Filing date
Publication date
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Publication of EP0775554A1 publication Critical patent/EP0775554A1/en
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Publication of EP0775554B1 publication Critical patent/EP0775554B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/08Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006Vibration damping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/08Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
    • B25C1/143Hand-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/08Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/18Details and accessories, e.g. splinter guards, spall minimisers

Definitions

  • the invention relates to a powder-operated setting tool with a handle having housing, a piston guide which acts against the force of a spring and is axially displaceable relative to the housing and one is opposite to the setting direction to the piston guide, the ignition pin guide, which is opposite the housing is axially displaceable and cooperates with a damping device which is located on one of the Supporting stop surface of the housing facing.
  • An Indian Firing pin guide arranged firing mechanism has one against the force of a Spring element axially displaceable ignition pin.
  • the ignition pin becomes accelerated and ignited by the prestressed spring element in the direction of the propellant charge this when hitting it.
  • the LPG pressure accelerates the piston guidance and the ignition pin guide against the setting direction and a driving piston in one Guide bore of the piston guide in the setting direction, so that the driving piston is in area of the piston guide on the setting direction side drives the recording material.
  • the acceleration of the piston guide and the ignition pin guide against the setting direction relative to the housing is by the damping device subdued.
  • the invention has for its object to a powder-operated setting tool of the generic type create that, regardless of the amount of pressure, a safe operation of the Damping element ensures that the operator offers a high level of comfort and is simple and economical to manufacture.
  • the object is achieved in that the housing is one of the Guide the piston guide serving receiving space, the axial length the piston guide, at most, that of the end faces of the housing on the setting direction and the firing pin guide corresponds to the limited axial length of the receiving space.
  • the receiving space receiving the piston guide has an axial length that itself from a setting direction side of the housing to the setting direction side Front side of the firing pin guide extends.
  • the axially in the receiving space displaceable piston guide is at most of the same length as the receiving space.
  • the firing pin guide When the firing pin guide is closing the arranged on the piston guide Cartridge holder should serve, then preferably corresponds to the axial length of the Piston guide of the axial length of the receiving space.
  • the piston guide In the pressed state of the Of the setting tool, the piston guide lies against the ignition pin guide without the damping device squeeze.
  • An approximately constant damping force is preferably achieved with a damping device achieved by a cylinder containing liquid medium under gas pressure and a pressure piston having throttle openings is formed.
  • the effect is expedient Pressure piston with the ignition pin guide and the cylinder with the stop surface of the Housing together.
  • the invention is based on a drawing that shows an embodiment, explained in more detail.
  • the setting tool according to the invention shown in the rest position serves to drive in Fastening elements 21, for example nails, bolts or the like.
  • hard receiving materials 22 has a housing 1 with a laterally protruding handle 2, a arranged in the handle 2 operating switch 3, a piston guide 4 with a Guide bore 5 in which a driving piston 6 is displaceable and one against the Direction of setting to the piston guide 4, the ignition pin guide 8 an ignition mechanism 9, with the piston guide 4 and the firing pin guide 8 opposite the housing 1 are axially displaceable.
  • the firing pin guide 8 is displaceable against the force of a restoring element 10 is supported on a stop surface 7 of the housing 1 facing the setting direction.
  • a Cartridge receptacle 11 At one end area of the piston guide 4 facing the ignition pin guide 8 there is a Cartridge receptacle 11 arranged to accommodate a propellant charge, not shown serves.
  • the ignition mechanism 9 is composed of an ignition pin 12, a surrounding the ignition pin 12, laterally from this protruding driving cam 13 and a spring element 20 together.
  • the driving cam 13 protrudes into the axial projection in the Firing pin guide 8 mounted, cooperating with the piston guide 4 driving pin 14.
  • a driver 15 protrudes laterally from the firing pin guide 8 and leads into the axial projection of a pressure piston 16, not shown, having throttle openings Damping device 17 protrudes, which is arranged laterally next to the ignition pin guide 8.
  • the damping device 17 has a cylinder 18 in which the pressure piston 16 is mounted. Inside the cylinder 18 is under gas pressure standing, liquid medium 19.
  • the damping device 17 is supported, as is the reset element 10 and that with the ignition pin 12 cooperating spring element 20, on the stop surface 7 of the housing 1.
  • the fastening element 21 to be driven is inserted into the setting direction End of the piston guide 4 inserted and the setting tool in a ready to ignite Positioned.
  • the one between the piston guide 4 and the driving cam 13 of the firing pin 12 arranged driving pins 14 pushes the firing pin 12 into a position ready for ignition, with the Firing pin 12 cooperating spring element 20 is compressed.
  • the piston guide 4 In the pressed position, the piston guide 4 is on the ignition pin guide 8 and the Ignition pin guidance on the damping device 17.
  • the ignition pin 12 moves out of the axial projection of the driving pin 14 and is accelerated towards propellant where he ignites it.
  • the propellant pressure accelerates the propellant piston 6 in the Guide bore 5 of the piston guide 4 in the setting direction and the piston guide 4 and the firing pin guide 8 against the setting direction. That in the setting direction area of the setting device arranged fastening element 21 is from the driving piston 6 driven into the receiving material 22.
  • Right at the start of the acceleration of the Firing pin guide 8 responds to the damping device 17, so that the force of the recoil is damped so strongly that there are no major burdens on the Operator act.
  • the reset element 10 acting in parallel with the damping device 17 in the form of a Compression spring arranged between the ignition pin guide 8 and the stop surface 7 is, the ignition pin guide 8 pushes into its starting position after the driving-in process until it touches one between the piston guide 4 and the ignition pin guide 8 arranged stop of the housing 1 abuts.
  • the one with the firing pin guide 8 cooperating damping device 17 can also be in their starting position reach.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Die Erfindung betrifft ein pulverkraftbetriebenes Setzgerät mit einem, einen Handgriff aufweisenden Gehäuse, einer Kolbenführung, die gegen die Kraft einer Feder und gegenüber dem Gehäuse axial versetzbar ist sowie einer sich entgegen der Setzrichtung an die Kolbenführung anschliessenden Zündstiftführung, die gegenüber dem Gehäuse axial versetzbar ist und mit einer Dämpfeinrichtung zusammenwirkt, die sich an einer der Setzrichtung zugewandten Anschlagfläche des Gehäuses abstützt.The invention relates to a powder-operated setting tool with a handle having housing, a piston guide which acts against the force of a spring and is axially displaceable relative to the housing and one is opposite to the setting direction to the piston guide, the ignition pin guide, which is opposite the housing is axially displaceable and cooperates with a damping device which is located on one of the Supporting stop surface of the housing facing.

Aus der EP-A- 0 331 168 ist ein pulverkraftbetriebenes Setzgerät mit den Merkmalen des Oberbegriffs des Anspruchs 1 bekannt, das dem Eintreiben von Befestigungselementen, beispielsweise Nägel, Bolzen oder dgl. in harte Aufnahmewerkstoffe dient. Gegenüber einem einen Handgriff aufweisenden Gehäuse ist eine Kolbenführung und eine sich entgegen der Setzrichtung an die Kolbenführung anschliessende Zündstiftführung axial versetzbar. Die Kolbenführung ist gegen die Kraft einer Feder und die Zündstiftführung gegen die Kraft einer Dämpfeinrichtung versetzbar, die sich an einer der Setzrichtung zugewandten Anschlagfläche des Gehäuses abstützt. Die Kolbenführung überragt eine setzrichtungsseitige Stimseite des Gehäuses axial und weist einen in einer Führungsbohrung der Kolbenführung versetzbaren Treibkolben auf.From EP-A-0 331 168 a powder-operated setting tool with the features of the preamble of claim 1 is known, which Driving fasteners such as nails, bolts or the like into hard Recording materials is used. Compared to a housing with a handle a piston guide and one that follows the piston guide against the setting direction Ignition pin guide axially displaceable. The piston guide is against the force a spring and the firing pin guide can be displaced against the force of a damping device, which is supported on a stop surface of the housing facing the setting direction. The piston guide projects axially and beyond a set side on the setting direction side has a driving piston which can be displaced in a guide bore of the piston guide.

An einem der Zündstiftführung zugewandten Endbereich der Kolbenführung ist eine Kartuschenaufnahme angeordnet, die der Aufnahme einer Treibladung dient. Ein in der Zündstiftführung angeordneter Zündmechanismus weist einen gegen die Kraft eines Federelementes axial versetzbaren Zündstift auf. Beim Anpressen des Setzgerätes gegen einen Aufnahmewerkstoff erfolgt eine axiale Versetzung der Kolbenführung entgegen der Setzrichtung, bis diese an der Zündstiftführung anliegt. Dabei wird das Federelement und die zwischen der Kolbenführung und dem Gehäuse angeordnete Feder vorgespannt.There is an end region of the piston guide facing the ignition pin guide Cartridge holder arranged, which serves to hold a propellant charge. An Indian Firing pin guide arranged firing mechanism has one against the force of a Spring element axially displaceable ignition pin. When pressing the setting tool against a receiving material there is an axial displacement of the piston guide the setting direction until it touches the firing pin guide. The spring element and the spring arranged between the piston guide and the housing biased.

Beim Betätigen eines im Handgriff angeordneten Betätigungsschalters wird der Zündstift von dem vorgespannten Federelement in Richtung Treibladung beschleunigt und zündet diese beim Aufprallen auf derselben. Der Treibgasdruck beschleunigt die Kolbenführung und die Zündstiftführung entgegen der Setzrichtung und einen Treibkolben in einer Führungsbohrung der Kolbenführung in Setzrichtung, so dass der Treibkolben ein im setzrichtungsseitigen Bereich der Kolbenführung angeordnetes Befestigungselement in den Aufnahmewerkstoff treibt. Die Beschleunigung der Kolbenführung und der Zündstiftführung entgegen der Setzrichtung gegenüber dem Gehäuse wird von der Dämpfeinrichtung gedämpft.When an actuation switch arranged in the handle is actuated, the ignition pin becomes accelerated and ignited by the prestressed spring element in the direction of the propellant charge this when hitting it. The LPG pressure accelerates the piston guidance and the ignition pin guide against the setting direction and a driving piston in one Guide bore of the piston guide in the setting direction, so that the driving piston is in area of the piston guide on the setting direction side drives the recording material. The acceleration of the piston guide and the ignition pin guide against the setting direction relative to the housing is by the damping device subdued.

Erfolgt der Anpressvorgang mit sehr viel Kraft, so erfolgt bereits während des Anpressvorganges eine axiale Verschiebung der Zündstiftführung gegenüber dem Gehäuse. Die Folge davon ist eine zumindest zum Teil zusammengedrückte Dämpfeinrichtung. Beim nachfolgenden Setzvorgang ist die Dämpfeinrichtung dadurch nicht mehr in der Lage die auf das Gehäuse bzw. den Handgriff wirkende Rückstosskraft ausreichend zu dämpfen. Es entsteht somit eine Verletzungsgefahr für die Bedienungsperson.If the pressing process is carried out with a lot of force, this takes place already during the pressing process an axial displacement of the firing pin guide relative to the housing. The The consequence of this is an at least partially compressed damping device. At the subsequent setting process, the damping device is no longer able to to sufficiently dampen the recoil force acting on the housing or the handle. There is therefore a risk of injury to the operator.

Der Erfindung liegt die Aufgabe zugrunde, ein pulverkraftbetriebenes Setzgerät der gattungsbildenden Bauart zu schaffen, das unabhängig von der Höhe der Anpresskraft eine sichere Betätigung des Dämpfungselementes gewährleistet, der Bedienungsperson einen hohen Komfort bietet und einfach sowie wirtschaftlich herstellbar ist.The invention has for its object to a powder-operated setting tool of the generic type create that, regardless of the amount of pressure, a safe operation of the Damping element ensures that the operator offers a high level of comfort and is simple and economical to manufacture.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass das Gehäuse einen der Führung der Kolbenführung dienenden Aufnahmeraum aufweist, wobei die axiale Länge der Kolbenführung höchstens der von den setzrichtungsseitigen Stimseiten des Gehäuses und der Zündstiftführung begrenzten axialen Länge des Aufnahmeraumes entspricht.According to the invention the object is achieved in that the housing is one of the Guide the piston guide serving receiving space, the axial length the piston guide, at most, that of the end faces of the housing on the setting direction and the firing pin guide corresponds to the limited axial length of the receiving space.

Der die Kolbenführung aufnehmende Aufnahmeraum weist eine axiale Länge auf, die sich von einer setzrichtungsseitigen Stimseite des Gehäuses bis zu der setzrichtungsseitigen Stimseite der Zündstiftführung erstreckt. Die in dem Aufnahmeraum axial versetzbare Kolbenführung ist höchstens gleich lang ausgebildet wie der Aufnahmeraum. Beim Anpressvorgang wird die das Gehäuse setzrichtungsseitg überragende Kolbenführung soweit in den Aufnahmeraum verschoben, bis die setzrichtungsseitige Stirnseite der Kolbenführung in der gleichen Ebene wie die setzrichtungsseitige Stimseite des Gehäuses liegt. The receiving space receiving the piston guide has an axial length that itself from a setting direction side of the housing to the setting direction side Front side of the firing pin guide extends. The axially in the receiving space displaceable piston guide is at most of the same length as the receiving space. During the pressing process, the piston guide protrudes beyond the housing in the direction of insertion so far moved into the receiving space until the end face on the setting direction the piston guide in the same plane as the end face of the housing on the setting direction lies.

Wenn die Zündstiftführung dem Verschliessen der an der Kolbenführung angeordneten Kartuschenaufnahme dienen soll, dann entspricht vorzugsweise die axiale Länge der Kolbenführung der axialen Länge des Aufnahmeraumes. Im angepressten Zustand des Setzgerätes liegt die Kolbenführung an der Zündstiftführung an, ohne die Dämpfeinrichtung zusammenzudrücken.When the firing pin guide is closing the arranged on the piston guide Cartridge holder should serve, then preferably corresponds to the axial length of the Piston guide of the axial length of the receiving space. In the pressed state of the Of the setting tool, the piston guide lies against the ignition pin guide without the damping device squeeze.

Eine annähernd konstante Dämpfkraft wird vorzugsweise mit einer Dämpfeinrichtung erreicht, die von einem, flüssiges Medium unter Gasdruck beinhaltenden Zylinder und einem, Drosselöffnungen aufweisenden Druckkolben gebildet wird.An approximately constant damping force is preferably achieved with a damping device achieved by a cylinder containing liquid medium under gas pressure and a pressure piston having throttle openings is formed.

Aus Gründen der Gewichtsverteilung in dem Setzgerät wirkt zweckmässigerweise der Druckkolben mit der Zündstiftführung und der Zylinder mit der Anschlagfläche des Gehäuses zusammen.For reasons of weight distribution in the setting tool, the effect is expedient Pressure piston with the ignition pin guide and the cylinder with the stop surface of the Housing together.

Die Erfindung wird anhand einer Zeichnung, die ein Ausführungsbeispiel wiedergibt, näher erläutert.The invention is based on a drawing that shows an embodiment, explained in more detail.

Das in Ruhestellung dargestellte erfindungsgemässe Setzgerät dient dem Eintreiben von Befestigungselementen 21, beispielsweise Nägel, Bolzen oder dgl. in harte Aufnahmewerkstoffe 22 und weist ein Gehäuse 1 mit einem seitlich abragenden Handgriff 2, einen im Handgriff 2 angeordneten Betätigungsschalter 3, eine Kolbenführung 4 mit einer Führungsbohrung 5, in der ein Treibkolben 6 versetzbar ist und eine sich entgegen der Setzrichtung an die Kolbenführung 4 anschliessende Zündstiftführung 8 einem Zündmechanismus 9 auf, wobei die Kolbenführung 4 und die Zündstiftführung 8 gegenüber dem Gehäuse 1 axial versetzbar sind.The setting tool according to the invention shown in the rest position serves to drive in Fastening elements 21, for example nails, bolts or the like. In hard receiving materials 22 and has a housing 1 with a laterally protruding handle 2, a arranged in the handle 2 operating switch 3, a piston guide 4 with a Guide bore 5 in which a driving piston 6 is displaceable and one against the Direction of setting to the piston guide 4, the ignition pin guide 8 an ignition mechanism 9, with the piston guide 4 and the firing pin guide 8 opposite the housing 1 are axially displaceable.

Die Zündstiftführung 8 ist gegen die Kraft eines Rückstellelementes 10 versetzbar, das sich an einer der Setzrichtung zugewandten Anschlagfäche 7 des Gehäuses 1 abstützt. An einem der Zündstiftführung 8 zugewandten Endbereich der Kolbenführung 4 ist eine Kartuschenaufnahme 11 angeordnet, die der Aufnahme einer nicht dargestellten Treibladung dient.The firing pin guide 8 is displaceable against the force of a restoring element 10 is supported on a stop surface 7 of the housing 1 facing the setting direction. At one end area of the piston guide 4 facing the ignition pin guide 8 there is a Cartridge receptacle 11 arranged to accommodate a propellant charge, not shown serves.

Der Zündmechanismus 9 setzt sich aus einem Zündstift 12, einem den Zündstift 12 umgebenden, seitlich von diesem abragenden Mitnahmenocken 13 sowie einem Federelement 20 zusammen. Der Mitnahmenocken 13 ragt in die Axialprojektion eines in der Zündstiftführung 8 gelagerten, mit der Kolbenführung 4 zusammenwirkenden Mitnahmebolzens 14.The ignition mechanism 9 is composed of an ignition pin 12, a surrounding the ignition pin 12, laterally from this protruding driving cam 13 and a spring element 20 together. The driving cam 13 protrudes into the axial projection in the Firing pin guide 8 mounted, cooperating with the piston guide 4 driving pin 14.

Seitlich von der Zündstiftführung 8 ragt ein Mitnehmer 15 ab, der in die Axialprojektion eines, nicht dargestellte Drosselöffnungen aufweisenden Druckkolbens 16 einer Dämpfeinrichtung 17 ragt, die seitlich neben der Zündstiftführung 8 angeordnet ist. Neben dem Druckkolben 16 weist die Dämpfeinrichtung 17 einen Zylinder 18 auf, in dem der Druckkolben 16 gelagert ist. Im Innern des Zylinders 18 befindet sich unter Gasdruck stehendes, flüssiges Medium 19.A driver 15 protrudes laterally from the firing pin guide 8 and leads into the axial projection of a pressure piston 16, not shown, having throttle openings Damping device 17 protrudes, which is arranged laterally next to the ignition pin guide 8. In addition to the pressure piston 16, the damping device 17 has a cylinder 18 in which the pressure piston 16 is mounted. Inside the cylinder 18 is under gas pressure standing, liquid medium 19.

Die Dämpfeinrichtung 17 stützt sich, wie auch das Rückstellelement 10 und das mit dem Zündstift 12 zusammenwirkende Federelement 20, an der Anschlagfläche 7 des Gehäuses 1 ab.The damping device 17 is supported, as is the reset element 10 and that with the ignition pin 12 cooperating spring element 20, on the stop surface 7 of the housing 1.

Vor einem Eintreibvorgang wird das einzutreibende Befestigungselement 21 in das setzrichtungsseitige Ende der Kolbenführung 4 eingesetzt und das Setzgerät in eine zündbereite Stellung gebracht. Dazu wird das Setzgerät mit der Kolbenführung 4 gegen den Aufnahmewerkstoff 22 gedrückt, so dass sich die Kolbenführung 4 in den Aufnahmeraum 24 des Gehäuses verschiebt und eine sich am Gehäuse 1 abstützende, die Kolbenführung 4 umgebende Druckfeder 23 vorgespannt wird. Der zwischen der Kolbenführung 4 und dem Mitnahmenocken 13 des Zündstiftes 12 angeordnete Mitnahmebolzen 14 drückt den Zündstift 12 in eine zündbereite Position, wobei das mit dem Zündstift 12 zusammenwirkende Federelement 20 zusammengedrückt wird.Before a driving-in process, the fastening element 21 to be driven is inserted into the setting direction End of the piston guide 4 inserted and the setting tool in a ready to ignite Positioned. For this purpose, the setting tool with the piston guide 4 against the Receiving material 22 pressed so that the piston guide 4 in the receiving space 24 of the housing moves and a supported on the housing 1, the Piston guide 4 surrounding compression spring 23 is biased. The one between the piston guide 4 and the driving cam 13 of the firing pin 12 arranged driving pins 14 pushes the firing pin 12 into a position ready for ignition, with the Firing pin 12 cooperating spring element 20 is compressed.

In der angepressten Stellung liegt die Kolbenführung 4 an der Zündstiftführung 8 und die Zündstifftführung an der Dämpfeinrichtung 17 an.In the pressed position, the piston guide 4 is on the ignition pin guide 8 and the Ignition pin guidance on the damping device 17.

Beim Betätigen des Betätigungsschalters 3 bewegt sich der Zündstift 12 aus der Axialprojektion des Mitnahmebolzens 14 und wird in Richtung Treibladung beschleunigt, wo er dieselbe zündet. Der Treibladungsdruck beschleunigt den Treibkolben 6 in der Führungsbohrung 5 der Kolbenführung 4 in Setzrichtung und die Kolbenführung 4 und die Zündstiftführung 8 entgegen der Setzrichtung. Das im setzrichtungsseitigen Bereich des Setzgerätes angeordnete Befestigungselement 21 wird dabei von dem Treibkolben 6 in den Aufnahmewerkstoff 22 eingetrieben. Gleich zu Beginn der Beschleunigung der Zündstiftführung 8 spricht die Dämpfeinrichtung 17 an, so dass die Kraft des Rückstosses derart stark gedämpft wird, dass keine grossen Belastungen auf die Bedienungsperson einwirken. When the actuation switch 3 is actuated, the ignition pin 12 moves out of the axial projection of the driving pin 14 and is accelerated towards propellant where he ignites it. The propellant pressure accelerates the propellant piston 6 in the Guide bore 5 of the piston guide 4 in the setting direction and the piston guide 4 and the firing pin guide 8 against the setting direction. That in the setting direction area of the setting device arranged fastening element 21 is from the driving piston 6 driven into the receiving material 22. Right at the start of the acceleration of the Firing pin guide 8 responds to the damping device 17, so that the force of the recoil is damped so strongly that there are no major burdens on the Operator act.

Das parallel zur Dämpfungseinrichtung 17 wirkende Rückstellelement 10 in Form einer Druckfeder, die zwischen der Zündstiftführung 8 und der Anschlagfläche 7 angeordnet ist, schiebt die Zündstiftführung 8 nach dem Eintreibvorgang in ihre Ausgangsstellung zurück, bis diese an einem zwischen der Kolbenführung 4 und der Zündstiftführung 8 angeordneten Anschlag des Gehäuses 1 anliegt. Die mit der Zündstiftführung 8 zusammenwirkende Dämpfeinrichtung 17 kann dabei ebenfalls in ihre Ausgangsstellung gelangen.The reset element 10 acting in parallel with the damping device 17 in the form of a Compression spring arranged between the ignition pin guide 8 and the stop surface 7 is, the ignition pin guide 8 pushes into its starting position after the driving-in process until it touches one between the piston guide 4 and the ignition pin guide 8 arranged stop of the housing 1 abuts. The one with the firing pin guide 8 cooperating damping device 17 can also be in their starting position reach.

Mit Hilfe der die Kolbenführung 4 umgebenden Druckfeder 23 wird der Treibkolben 6 innerhalb der Führungsbohrung 5 in seine Ausgangsstellung zurückversetzt.With the help of the compression spring 23 surrounding the piston guide 4, the drive piston 6 set back into its starting position within the guide bore 5.

Claims (4)

  1. Explosively actuated setting tool, comprising a housing (1) with a handle (2), a piston guide (4) which is axially displaceable against the load of a spring (23) and relative to the housing (1), as well as a firing pin guide (8) which is against the setting direction adjacent the piston guide (4) which is relative to the housing (1) axially displaceable and co-acts with a damping device (17) which supports itself against a contact surface (7) of the housing (1) facing in the setting direction, characterised in that the housing (1) comprises an accommodation space (24) which serves to guide the piston guide (4), and the axial length (LK) of the piston guide (4) corresponds maximum with the axial length (LA) of the accommodation space (24) as defined in the setting direction by the end surfaces of the housing (1) and the firing pin guide (8).
  2. Setting tool according to Claim 1, characterised in that the axial length (LK) of the piston guide corresponds with the axial length (LA) of the accommodation space (24).
  3. Setting tool according to Claim 1 or 2, characterised in that the damping device (17) is formed by a cylinder (18) which contains fluid medium (19) under gas pressure and a pressure piston (16) comprising throttle apertures.
  4. Setting tool according to Claim 3, characterised in that the pressure piston (16) co-acts with the firing pin guide (8), and the cylinder (18) co-acts with the contact surface (7) of the housing (1).
EP96810639A 1995-11-27 1996-09-27 Bolt driving tool with shock absorber Expired - Lifetime EP0775554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19544105A DE19544105A1 (en) 1995-11-27 1995-11-27 Bolt setting tool with shock absorber
DE19544105 1995-11-27

Publications (2)

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EP0775554A1 EP0775554A1 (en) 1997-05-28
EP0775554B1 true EP0775554B1 (en) 2000-04-26

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Application Number Title Priority Date Filing Date
EP96810639A Expired - Lifetime EP0775554B1 (en) 1995-11-27 1996-09-27 Bolt driving tool with shock absorber

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US (1) US5884828A (en)
EP (1) EP0775554B1 (en)
JP (1) JPH09174457A (en)
KR (1) KR100403650B1 (en)
CN (1) CN1055041C (en)
AU (1) AU710809B2 (en)
DE (2) DE19544105A1 (en)

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US8505798B2 (en) 2005-05-12 2013-08-13 Stanley Fastening Systems, L.P. Fastener driving device
CN108312113A (en) * 2017-01-18 2018-07-24 廖显临 The firing pin assembly and its combined method of ailing machine

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US5829660A (en) * 1995-12-07 1998-11-03 Stanley-Bostitch, Inc. Automatic-type fastener driving device
US6059162A (en) * 1998-10-16 2000-05-09 Illinois Tool Works Inc. Exhaust baffle and spring assisted reset and dampener for powder actuated tool
DE19903993A1 (en) * 1999-02-02 2000-08-03 Hilti Ag Setting tool
AUPQ292499A0 (en) * 1999-09-17 1999-10-07 Cetram Pty Limited Power actuated tools
US6318479B1 (en) 1999-10-01 2001-11-20 Chicago Pneumatic Tool Company Vibration isolated impact wrench
US6321853B2 (en) 1999-10-01 2001-11-27 Chicago Pneumtic Tool Company Vibration isolated impact wrench
DE10107979B4 (en) * 2001-02-19 2012-12-13 Hilti Aktiengesellschaft setting tool
US6705409B2 (en) * 2001-03-22 2004-03-16 Chicago Pneumatic Tool Company Reciprocating tool having a piston retaining system
DE10162633B4 (en) * 2001-12-20 2012-12-06 Hilti Aktiengesellschaft Stud gun
DE10251307B4 (en) * 2002-11-04 2014-04-10 Hilti Aktiengesellschaft Internal combustion setting device
DE10253668B4 (en) * 2002-11-19 2015-03-05 Hilti Aktiengesellschaft Internal combustion setting device
DE10355720B4 (en) * 2003-11-28 2006-05-04 Hilti Ag Internal combustion setting device
US8240394B2 (en) * 2008-12-09 2012-08-14 Sp Air Kabushiki Kaisha Hammer with vibration reduction mechanism
EP3184256A1 (en) * 2015-12-23 2017-06-28 HILTI Aktiengesellschaft Pyrotechnic insertion device

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US8505798B2 (en) 2005-05-12 2013-08-13 Stanley Fastening Systems, L.P. Fastener driving device
CN108312113A (en) * 2017-01-18 2018-07-24 廖显临 The firing pin assembly and its combined method of ailing machine
CN108312113B (en) * 2017-01-18 2021-12-14 向优股份有限公司 Striker assembly for nailing gun and method of coupling same

Also Published As

Publication number Publication date
CN1055041C (en) 2000-08-02
DE19544105A1 (en) 1997-05-28
JPH09174457A (en) 1997-07-08
AU7189996A (en) 1997-06-05
CN1158779A (en) 1997-09-10
DE59605032D1 (en) 2000-05-31
AU710809B2 (en) 1999-09-30
US5884828A (en) 1999-03-23
EP0775554A1 (en) 1997-05-28
KR970025861A (en) 1997-06-24
KR100403650B1 (en) 2004-03-19

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