EP3122516B1 - Cloueur à poudre - Google Patents

Cloueur à poudre Download PDF

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Publication number
EP3122516B1
EP3122516B1 EP15712125.2A EP15712125A EP3122516B1 EP 3122516 B1 EP3122516 B1 EP 3122516B1 EP 15712125 A EP15712125 A EP 15712125A EP 3122516 B1 EP3122516 B1 EP 3122516B1
Authority
EP
European Patent Office
Prior art keywords
piston
driving device
link
central axis
operating part
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
EP15712125.2A
Other languages
German (de)
English (en)
Other versions
EP3122516A1 (fr
Inventor
Harald Fielitz
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 EP3122516A1 publication Critical patent/EP3122516A1/fr
Application granted granted Critical
Publication of EP3122516B1 publication Critical patent/EP3122516B1/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
    • 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
    • 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

Definitions

  • the invention relates to a tacker according to the preamble of claim 1.
  • Hand-held driving devices with propellant charge are known from the prior art, in which after ignition of a pyrotechnic charge, the resulting fuel gases expand in a combustion chamber. As a result, a piston is accelerated as energy transfer means and drives a fastener into a workpiece.
  • a known pyrotechnic tacker is sold under the designation DX 36 by Hilti Corporation, Schaan, Liechtenstein.
  • the driving force of a fastener can be reduced if necessary by controlled presentation of the starting position of the piston in a combustion chamber.
  • a setting wheel is provided on the device, which is laterally offset from a central axis of the piston in a respect to the driving direction rear portion of the device.
  • the DX 36 is a type of driver without automatic piston return.
  • the piston is moved after a driving operation by a manual Repetieriolo in a start position.
  • a piston guide is pushed forward in the driving direction, with a housing-fixed stop limiting the movement of the piston in the same direction. This results in a relative movement of the piston with respect to the piston guide to the rear against the setting direction.
  • the piston is thus spent by the first part of the repeating movement in a rear position in the piston guide, which corresponds to a start position with maximum driving energy.
  • the piston guide is pushed together with the piston in the opposite direction to the rear until the piston guide reaches a defined rear stop.
  • the piston and the piston guide are now first jointly further pushed back until the piston meets an adjustable stop by means of the adjusting wheel.
  • the piston thus stops and the piston guide is pushed further backwards on its own.
  • the associated relative movement between the piston and the piston guide finally causes the above-mentioned idea of the starting position of the piston in the combustion chamber.
  • Other tackers are also out DE 2548014 A1 such as De 2447767 A1 named.
  • Such a design of axially different stop positions also has the advantage that it allows a linear or otherwise desired control scale of the drive energy, even if the relationship between the starting position and Eincombergie the piston is highly nonlinear.
  • the backdrop is arranged on a piston member surrounding the piston guide.
  • a sleeve member lends itself to a simple mechanical realization, which takes up little space.
  • an axial distance between the gate and a control panel for adjusting the scenery can thereby be bridged.
  • a sliding link is understood to be a component in which an axially oriented surface is provided whose axial position differs depending on a position perpendicular to the axial direction. These can be steps, continuous ramps or even a combination of steps and ramps act. At least some of the axially different positions are provided as defined stop positions for adjusting the piston member.
  • a central axis in the sense of the invention is an axis at least parallel to the movement of the fastening element.
  • the central axis also passes through a center of the fastener and the piston member.
  • a driving energy is understood to mean the kinetic energy of a given fastening means for a given propellant charge. Given these boundary conditions, it is possible by the actuator to adjust the resulting driving energy of the fastener adjustable.
  • a piston member according to the invention is any means which is acted upon by the ignition of the charge with kinetic energy, wherein the kinetic energy is ultimately transferred to the fastening means.
  • the piston member is designed as a particular cylindrical piston.
  • recesses or other structures may be provided which further promote turbulence and uniform expansion of the fuel gases.
  • a radially projecting, preferably pin-shaped projection is arranged on the piston member, in particular on a piston head of the piston member, which comprises a counter-stop for the slide.
  • any retractable anchoring such as nail, bolt or screw understood.
  • the link is pivotable about the central axis, whereby a simple and space-saving change in the stop position can be achieved.
  • the actuator has a pivotable about the central axis control panel. Due to the pivotability of the control panel about the central axis is a simple adjustment at the same time effective visual control of the set value achievable. Such an arrangement also allows easy adjustment even under unfavorable conditions such as wearing work gloves.
  • the control panel may be any suitable means for manual adjustment, such as a rotatable sleeve, a pivotable knob, or the like.
  • a pivoting of the operating part about the central axis means a substantially perpendicular to the axis oriented deflection of the control panel from a previous position.
  • a movement line or trajectory of the operating part has a radius of curvature, which is preferably not smaller than a distance of the operating part from the central axis.
  • the pivoting is a rotation about the central axis.
  • control panel is coupled via a mechanical positive control with the backdrop.
  • control panel and the scenery on the positive control are axially mutually displaceable and rotatably connected to each other. This allows in particular an axial change of the position of the slide relative to the housing in the course of adjusting the piston position.
  • the operating part is designed as an annular sleeve, wherein the sleeve surrounds the central axis.
  • the sleeve can be rotated in several different positions, wherein at least two different positions are assigned to two different driving forces.
  • An inventive control panel and in particular a sleeve described above can be arranged to optimize the ergonomics of the device in a front area in front of a handle of the device. This can result in arrangement and design of the control panel an advantageous analogy to known controls of hand-held drills and / or cordless screwdrivers.
  • the controls of such devices are used according to other purposes, such as a torque adjustment or a change from screwing to hammer operation in a percussion drill.
  • the piston guide is axially displaced relative to the link in the course of a pressing movement of the tacker. This allows a space-saving and effective change in the starting position of the piston member.
  • a front part of the device is pushed by a certain stroke in the Anpressvorgang before triggering the Eintreibilless, whereby the corresponding relative movements of the piston guide, piston member and backdrop are effected.
  • the setting of the starting position of the piston member can also take place in the course of a repeating movement of the after a driving operation.
  • a simple and effective implementation of the invention provides that the piston member has a stop by means of which the piston member abuts in the course of setting its starting position directly to one of the stop positions of the gate. As a result, the number of components is kept small.
  • a drive-in device comprises a hand-guided housing 1, in which a piston member in the form of a piston 2 is accommodated.
  • a rear surface of the piston 2 defines a combustion chamber 3 in which the combustion gases of a pyrotechnic charge expand to accelerate the piston 2.
  • the charge is presently received in a cartridge made of sheet metal.
  • the cartridge has an impact fuze and is inserted into a cartridge bearing 4 before ignition via a corresponding loading mechanism.
  • the cartouche and the cartridge warehouse 4 are formed rotationally symmetrical about a central axis A.
  • the central axis A is in the present examples at the same time a central axis of the combustion chamber 3 and the piston member. 2
  • the combustion chamber 3 with the cartridge bearing 4 is part of a piston guide 5.
  • the piston guide 5 is formed as a linearly displaceable in the housing 1 of the tacker along the axis component.
  • the piston member 2 is in turn displaceable in the piston guide 5 linearly along the central axis A.
  • the Koben adjustment is formed in its front portion substantially as a hollow cylindrical element, wherein from one end of the region of the combustion chamber 3, a slit 6 is provided in the wall of the piston guide 5.
  • a front part 8 is connected to the piston guide 5.
  • a receptacle 7 for the fastening means is arranged in the front part 8.
  • the front part 8 is placed in the course of a driving operation on the workpiece and counter to a spring force by a stroke H (see Fig. 3 ) inserted.
  • the piston guide 5 is pressed with the cartridge bearing 4 to the rear against a trigger mechanism 9, so that the cartridge can be ignited.
  • the piston member 2 comprises a stop in the form of a laterally projecting pin 2a, which runs in the slot 6 of the piston guide 5.
  • the pin 2a protrudes beyond the outer wall of the piston guide 5 and can abut on one of a plurality of stop positions 10 a of a link 10.
  • a piston position in the piston guide 5 is set at the ignition time of the charge.
  • a rearmost position of the piston member corresponds to a maximum driving energy.
  • An introduced position corresponds to a reduced driving energy.
  • Fig. 5 (applied states) can be seen that the piston member 2 is initially arranged in the rearmost position in the piston guide 5 after a Repetierterrorism / piston return. Only over the stroke H of placement, the piston guide 5 is moved further to the rear, the piston member 2 remains from a direct stop of the pin 2a on the link 10 in the axial position.
  • the gate 10 is formed on a rear portion of a sleeve member 11 and has the shape of a circumferentially curved about the central axis stairs.
  • the individual stages or stop positions 10a are not uniformly high in the axial direction, but adapted for linearization of a setting scale of the driving energy.
  • the sleeve member 11 surrounds the piston guide 5 and can be both rotated and axially displaced with respect to this. In a front region, the sleeve member has two axially extending slots 11a which are formed to interlock with sliding blocks 12a of a control panel.
  • the control unit 12 is presently designed as a rotatable annular sleeve which is arranged substantially concentrically around the central axis A in a front region of the housing 1 of the tacker.
  • the control unit is fixed in the axial direction on the housing has a scale that indicates its position in the direction of rotation.
  • the sleeve member 11 is rotatably connected to the gate 10 via the sliding into the slots 11a sliding blocks 12a, but axially displaceable with the control panel 12.
  • the sliding blocks 12a and the slits 11a correspondingly form a positive control for the connection of the operating part 12 and the gate 10.
  • the sleeve member 11 and the control panel 12 is an actuator for adjusting the driving energy of the device.
  • the desired driving energy is set as the energy level marked on the operating part by turning the sleeve 12. This leads via the positive control described above to a selected positioning of the link in the circumferential direction relative to the pin 2a of the piston member. 2
  • the inventive design of a piston presentation by means of an adjustable link is not limited to the embodiment described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Actuator (AREA)
  • Automotive Seat Belt Assembly (AREA)

Claims (8)

  1. Appareil d'enfoncement comportant :
    un boîtier (1) tenu à la main,
    un élément de piston (2) reçu dans un guide de piston (5) pour transmettre de l'énergie d'une charge propulsive à un élément de fixation à enfoncer,
    dans lequel l'élément de piston (2) s'étend le long d'un axe central (A), et
    un élément de réglage (10, 11, 12) au moyen duquel une position de départ de l'élément de piston (2) peut être réglée de manière variable pour faire varier l'énergie transmise par la charge propulsive à l'élément de piston (2),
    dans lequel l'élément de réglage comporte une coulisse (10) ayant plusieurs positions de butée (10a) différentes dans une direction axiale,
    caractérisé en ce que
    la coulisse (10) est agencée sur un élément de douille (11) entourant le guide de piston (5).
  2. Appareil d'enfoncement selon la revendication 1, caractérisé en ce que la coulisse (10) peut pivoter autour de l'axe central (A).
  3. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de réglage (10, 11, 12) comporte une pièce de commande (12) pouvant pivoter autour de l'axe central (A).
  4. Appareil d'enfoncement selon la revendication 3, caractérisé en ce que la pièce de commande (12) est couplée à la coulisse (10) par l'intermédiaire d'une commande mécanique forcée (11a, 12a).
  5. Appareil d'enfoncement selon la revendication 4, caractérisé en ce que la pièce de commande (12) et la coulisse (10) peuvent se déplacer axialement l'une par rapport à l'autre par l'intermédiaire de la commande forcée (11a, 12a) et sont reliés l'une à l'autre de manière non rotative.
  6. Appareil d'enfoncement selon l'une des revendications 3 à 5, caractérisé en ce que la pièce de commande (12) est formée comme une douille annulaire, la douille entourant l'axe central (A).
  7. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que le guide de piston (5) est déplacé axialement au cours d'un mouvement de pression de l'appareil d'enfoncement par rapport à la coulisse (10).
  8. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de piston (2) comporte une butée (2a) au moyen de laquelle l'élément de piston (2) vient directement en butée contre l'une des positions de butée (10a) de la coulisse (10) au cours du réglage de sa position de départ.
EP15712125.2A 2014-03-28 2015-03-24 Cloueur à poudre Active EP3122516B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14162173.0A EP2923800A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre
PCT/EP2015/056240 WO2015144694A1 (fr) 2014-03-28 2015-03-24 Appareil d'enfoncement pyrotechnique

Publications (2)

Publication Number Publication Date
EP3122516A1 EP3122516A1 (fr) 2017-02-01
EP3122516B1 true EP3122516B1 (fr) 2018-05-02

Family

ID=50389303

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14162173.0A Withdrawn EP2923800A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre
EP15712125.2A Active EP3122516B1 (fr) 2014-03-28 2015-03-24 Cloueur à poudre

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14162173.0A Withdrawn EP2923800A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre

Country Status (8)

Country Link
US (1) US20160339574A1 (fr)
EP (2) EP2923800A1 (fr)
CN (1) CN106132638B (fr)
AU (2) AU2015238468A1 (fr)
BR (1) BR112016017011B1 (fr)
ES (1) ES2668944T3 (fr)
RU (1) RU2685558C2 (fr)
WO (1) WO2015144694A1 (fr)

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EP2886260A1 (fr) * 2013-12-19 2015-06-24 HILTI Aktiengesellschaft Appareil d'enfoncement
US10926389B2 (en) * 2018-07-31 2021-02-23 Chung-Heng Lee Powder-actuated tool

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Also Published As

Publication number Publication date
AU2017225052A1 (en) 2017-09-28
BR112016017011B1 (pt) 2020-12-08
EP3122516A1 (fr) 2017-02-01
EP2923800A1 (fr) 2015-09-30
RU2016142298A (ru) 2018-04-28
ES2668944T3 (es) 2018-05-23
AU2015238468A1 (en) 2016-08-11
RU2016142298A3 (fr) 2018-04-28
US20160339574A1 (en) 2016-11-24
CN106132638A (zh) 2016-11-16
RU2685558C2 (ru) 2019-04-22
CN106132638B (zh) 2018-09-18
WO2015144694A1 (fr) 2015-10-01

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