EP3122515B1 - Cloueur à poudre - Google Patents

Cloueur à poudre Download PDF

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Publication number
EP3122515B1
EP3122515B1 EP15711764.9A EP15711764A EP3122515B1 EP 3122515 B1 EP3122515 B1 EP 3122515B1 EP 15711764 A EP15711764 A EP 15711764A EP 3122515 B1 EP3122515 B1 EP 3122515B1
Authority
EP
European Patent Office
Prior art keywords
slider
central axis
combustion chamber
driving device
piston
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
EP15711764.9A
Other languages
German (de)
English (en)
Other versions
EP3122515A1 (fr
Inventor
Matthias Blessing
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 EP3122515A1 publication Critical patent/EP3122515A1/fr
Application granted granted Critical
Publication of EP3122515B1 publication Critical patent/EP3122515B1/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

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.
  • US 6,321,968 B1 describes a tacker with a propellant charge, in which the combustion chamber is separated by means of a perforated disc in an upper part of the chamber and a lower sub-chamber. The tacker has an adjustability of a dead space volume to adjust the Einandergie the device adjustable.
  • a valve-like slide can be adjusted in a direction perpendicular to a driving axis.
  • the combustion chamber in the closed position of the slide on a dead space, which is formed as a recess in a side wall of the combustion chamber.
  • Other tackers are also out DE 1478826 A1 .
  • a substantially cylindrical sleeve can be understood as the central axis of completely rotating bodies.
  • the piston member may be guided in the slider at least over a first part of its movement.
  • a variable release of the Abblaskanals or more Abblaskanäle can be done depending on detail by an adjustment of the slider in an axial direction and / or in the circumferential direction.
  • a arranged in front of the combustion chamber piston guide is rotatably received relative to the housing about the central axis.
  • the piston guide and the slide are rotatably coupled together and axially movable relative to each other.
  • the piston guide fulfills an additional function as a mechanical link between the slider and a control panel.
  • a blow-off channel in the sense of the invention is any space which can be added to the combustion chamber volume by the adjusting member in such a way as to change a driving energy in a defined manner via the additional expansion space.
  • the Abblaskanal can be connected to an outside space.
  • the blow-off channel may also be a dead space volume not connected to an exterior space.
  • a driving energy is understood to mean the kinetic energy of a given fastening element for a given propellant charge. Upon specification of 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 that is acted upon by the ignition of the charge with kinetic energy, wherein the kinetic energy is ultimately transmitted to the fastener.
  • 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 central axis in the sense of the invention is an axis at least parallel to the movement of the fastening element, which passes through a center of the combustion chamber runs.
  • the central axis extends through both the center of the combustion chamber and through a center of the fastener.
  • any retractable anchoring such as nail, bolt or screw understood.
  • the slider is rotatable about the central axis to adjust a cross section of the Abblaskanals.
  • the slider is supported in a positive guide, wherein a rotation of the slider about the central axis causes a movement of the slider in the direction of the central axis.
  • the positive guide comprises a preferably multi-start thread, a link or a sliding block.
  • the slide has a preferably cylindrical inner wall, which is formed as part of the combustion chamber.
  • the slide is also useful a guide of the piston member in a first portion of the piston movement.
  • the actuator has a pivotable about the central axis control panel.
  • the control panel may be any suitable means for manual adjustment, such as a rotatable sleeve as a particularly preferred variant, a pivotable knob or the like.
  • 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 drive energies.
  • the sleeve by means of a locking member in at least one defined position be held.
  • Such defined positions may be a maintenance position or a defined position for changing the driving energy.
  • 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.
  • 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 and the slider are rotatably connected, so that a rotation of the control panel at the same time causes a rotation and adjustment of the slider for regulating the driving energy.
  • the slider has a collar which runs around the central axis and overlaps into a recess of a combustion chamber housing, at least part of the blow-off channel being formed as an axially extending recess between the collar and the combustion chamber housing.
  • 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 surface 2a 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 fastening element may in particular be accommodated in a module or magazine (not shown) that is interchangeable in a front holding region 1a of the tacker device 1.
  • the charge is presently received in a cartridge 4a made of sheet metal.
  • the cartridge 4a has an impact fuse and is inserted into a cartridge bearing 4 before ignition via a corresponding loading mechanism, in the present case by means of a magazine strip.
  • the cartridge and the cartridge bearing 4 are rotationally symmetrical about one Central axis A formed.
  • 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 is arranged between a circular opening of the cartridge bearing 4 and the surface 2 a of the piston 2.
  • a depression 2b is formed in the piston 2, which contributes to a better turbulence of the combustion gases and forms part of the boundary of the combustion chamber 3.
  • the combustion chamber 3 is formed in a first section as a hollow cylindrical, substantially sleeve-shaped body 6.
  • This body 6 is at the same time as a rotatable about the central axis A and thereby in its position in the direction of the central axis A variable slide for adjustable release of one or more Abblaskanäle 7 formed with, for example, stepped cross-section.
  • the exhaust duct 7 comprises a plurality of recesses 7a in a combustion chamber housing 8 distributed over the circumference.
  • the recesses 7a extend axially in the direction parallel to the central axis A and open into a section of the exhaust duct 7 with a larger volume running between the combustion chamber housing 8 and a piston guide 5.
  • a cylindrical recess with a multi-start internal thread 8a In the combustion chamber housing 8 is located in the region of the combustion chamber, a cylindrical recess with a multi-start internal thread 8a.
  • the slider 6 is screwed with a corresponding external thread 6a in the opening of the combustion chamber housing 8. A rotation of the slider 6 about the central axis A thus causes a positively controlled axial displacement of the slider. 6
  • the slide 6 is provided with a collar 6b which extends to the rear or in the direction of a bottom of the combustion chamber 3 and engages in the recess of the combustion-chamber housing 8 in an axially overlapping manner.
  • a variable passage 9 is thus released from the combustion chamber 3 into the recesses or blow-off channels 7a (see FIG Fig. 5 ).
  • the passage 9 is closed when completely displaced to the rear slider 6 (see Fig. 6 ). If an opened passage 9 is set, then this is a part of the blow-off duct 7a, 7.
  • the passage is arranged in the axial direction immediately before the bottom of the combustion chamber 3, so that combustion gases can escape into the blow-off duct immediately at the beginning of the piston movement. hereby Depending on the setting of the slide 6, a particularly large area of energy reduction can be achieved.
  • a guide of the piston 2 takes place both in the slide 6 and in the slide 6 in the direction of drive subsequent piston guide 5.
  • the piston guide 5 is rotatably received in the combustion chamber housing about the central axis A.
  • the piston guide 5 is coupled by means of two jaws 5a with the slider 6, wherein the axially projecting claws 5a in two corresponding recesses 6d in the slide 6 rotatably, but axially displaceable engage (see Fig. 10 ).
  • the piston guide is coupled by means of one, three, four, five or more claws with the slider.
  • the length of the slider 6 is correspondingly dimensioned so that the maximum desired driving energy is achieved before the rear end of the piston member 2 sweeps over the gap.
  • the gap also connects the combustion chamber to the blow-off channel 7.
  • a front end of the piston guide 5 is rotatably coupled to a control panel 10. so that the piston guide 5 at the same time forms a mechanical connection between the operating part 10 and the slide 6.
  • the operating part 10 is designed as a sleeve rotatable in the combustion chamber housing, which sleeve is arranged substantially concentrically around the central axis A in a front region of the housing 1 of the tacking device.
  • the operating part 10 together with the piston guide 5 and the slide 6, an actuator for changing the driving force of the tacker 1 from.
  • This adjustment and the drive operation work as follows: After a Eintreibvorgang the piston member is in a partially undefined, but largely shifted forward position.
  • the combustion chamber housing 8 is located in a maximally pushed back into the tacker in position.
  • the terms "front” and "rear” are always selected with reference to the driving direction.
  • the desired driving energy is set as the energy level marked on the operating part by rotating the sleeve 10. This leads via the positive control described above to a selected axial positioning of the slide 6 relative to the combustion chamber housing 8. As a result, the blow-off channel is released or closed defined via the passage 9 (maximum driving energy).
  • a corresponding part of the propellant gases or exhaust gases is discharged to the outside via the described channels 7a, 7.
  • a closed dead space volume may be provided, for example, the Abblaskanäle 7a serve only as an optional room extension of the combustion chamber and are not connected further to the outside.
  • the gases guided via the blow-off ducts are used for a piston return by means of gas pressure.
  • a disassembly of the piston member 2 and the combustion chamber housing 8 by means of an additional locking ring 11 is made possible, which is arranged behind the control unit 10.
  • the lock ring carries a button 10a, which serves to secure the control panel 10 and must be pressed to adjust the control panel.
  • the locking ring 11 is secured in a similar manner via a button 11 a to the housing of the tacker 1.
  • the above-mentioned function for disassembling the tacker can also be integrated into the operating part 10.

Landscapes

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

Claims (8)

  1. Appareil d'enfoncement comportant :
    un boîtier (1) tenu à la main avec un élément de piston (2) agencé dans celui-ci pour transmettre de l'énergie à un élément de fixation à enfoncer,
    une charge propulsive (4a) pouvant notamment être remplacée et
    une chambre de combustion (3) agencée entre la charge propulsive (4a) et l'élément de piston (2), laquelle chambre de combustion s'étend autour d'un axe central (A),
    et un élément de réglage (5, 6, 10) au moyen duquel l'énergie transmise à l'élément de piston (2) par la charge propulsive (4a) peut être réglée de manière variable, dans lequel un canal d'échappement (7, 7a, 9) relié à la chambre de combustion (3) peut être débloqué au moyen d'un curseur mobile (6) de l'élément de réglage,
    dans lequel le curseur (6) comporte un corps entourant entièrement l'axe central (A),
    caractérisé en ce que
    un guide de piston (5) agencé avant la chambre de combustion (3) par rapport au boîtier (1) est reçu de façon à pouvoir tourner autour de l'axe central (A), dans lequel le guide de piston (5) et le curseur (6) sont couplés l'un à l'autre de manière non rotative et peuvent se déplacer axialement l'un par rapport à l'autre.
  2. Appareil d'enfoncement selon la revendication 1, caractérisé en ce que le curseur (6) peut tourner autour de l'axe central (A) afin de régler une section transversale (9) du canal d'échappement (7, 7a, 9).
  3. Appareil d'enfoncement selon la revendication 2, caractérisé en ce que le curseur (6) est supporté dans un guide forcé (6a, 8a), dans lequel une rotation du curseur (6) autour de l'axe central (A) entraîne un déplacement du curseur (6) en direction de l'axe central (A).
  4. Appareil d'enfoncement selon la revendication 3, caractérisé en ce que le guide forcé comporte en particulier plusieurs filets (6a, 8a).
  5. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que le curseur (6) comporte une paroi intérieure en particulier cylindrique qui est formée comme une partie de la chambre de combustion (3).
  6. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de réglage (5, 6, 10) comporte une pièce de commande (10) pouvant pivoter autour de l'axe central (A).
  7. Appareil d'enfoncement selon la revendication 6, caractérisé en ce que la pièce de commande (10) et le curseur (6) sont reliés de manière non rotative.
  8. Appareil d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que le curseur (6) comporte une bague (6b) entourant l'axe central (A), qui s'engage de manière chevauchante dans un évidement d'un boîtier de chambre à combustion (8), dans lequel au moins une partie du canal d'échappement (7a) est formée comme une cavité s'étendant axialement entre la bague (6b) et le boîtier de chambre à combustion (8).
EP15711764.9A 2014-03-28 2015-03-24 Cloueur à poudre Active EP3122515B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14162168.0A EP2923797A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre
PCT/EP2015/056226 WO2015144687A1 (fr) 2014-03-28 2015-03-24 Dispositif d'enfoncement pyrotechnique

Publications (2)

Publication Number Publication Date
EP3122515A1 EP3122515A1 (fr) 2017-02-01
EP3122515B1 true EP3122515B1 (fr) 2018-05-02

Family

ID=50389300

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14162168.0A Withdrawn EP2923797A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre
EP15711764.9A Active EP3122515B1 (fr) 2014-03-28 2015-03-24 Cloueur à poudre

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14162168.0A Withdrawn EP2923797A1 (fr) 2014-03-28 2014-03-28 Cloueur à poudre

Country Status (8)

Country Link
US (1) US10500703B2 (fr)
EP (2) EP2923797A1 (fr)
JP (1) JP6298900B2 (fr)
CN (1) CN106103001B (fr)
AU (1) AU2015238461A1 (fr)
ES (1) ES2669497T3 (fr)
TR (1) TR201810062T4 (fr)
WO (1) WO2015144687A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886260A1 (fr) * 2013-12-19 2015-06-24 HILTI Aktiengesellschaft Appareil d'enfoncement
EP2923800A1 (fr) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Cloueur à poudre
EP2923797A1 (fr) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Cloueur à poudre
EP4067002A1 (fr) * 2021-03-29 2022-10-05 Hilti Aktiengesellschaft Appareil d'enfoncement pyrotechnique
EP4067001A1 (fr) * 2021-03-29 2022-10-05 Hilti Aktiengesellschaft Appareil d'enfoncement pyrotechnique

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Also Published As

Publication number Publication date
TR201810062T4 (tr) 2018-08-27
CN106103001A (zh) 2016-11-09
JP2017509496A (ja) 2017-04-06
WO2015144687A1 (fr) 2015-10-01
AU2015238461A1 (en) 2016-08-18
ES2669497T3 (es) 2018-05-28
EP2923797A1 (fr) 2015-09-30
US10500703B2 (en) 2019-12-10
EP3122515A1 (fr) 2017-02-01
JP6298900B2 (ja) 2018-03-20
US20170100830A1 (en) 2017-04-13
CN106103001B (zh) 2018-07-17

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