EP3046733B1 - Dispositif d'entraînement avec accumulateur pneumatique - Google Patents

Dispositif d'entraînement avec accumulateur pneumatique Download PDF

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Publication number
EP3046733B1
EP3046733B1 EP14766121.9A EP14766121A EP3046733B1 EP 3046733 B1 EP3046733 B1 EP 3046733B1 EP 14766121 A EP14766121 A EP 14766121A EP 3046733 B1 EP3046733 B1 EP 3046733B1
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EP
European Patent Office
Prior art keywords
energy
piston
gas
driving
driving device
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
EP14766121.9A
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German (de)
English (en)
Other versions
EP3046733A1 (fr
Inventor
Peter Bruggmueller
Nikolaus Hannoschoeck
Christoph Boehm
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
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Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to EP14766121.9A priority Critical patent/EP3046733B1/fr
Publication of EP3046733A1 publication Critical patent/EP3046733A1/fr
Application granted granted Critical
Publication of EP3046733B1 publication Critical patent/EP3046733B1/fr
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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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047—Mechanical details
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • 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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure

Definitions

  • the invention relates to a tacker according to the preamble of claim 1.
  • a mechanical energy store means any component that can absorb and temporarily store mechanical energy.
  • it may be a gas spring or preferably an elastically deformable Act solid.
  • an elastically deformable solid are inter alia coil springs, coil springs, disc springs, torsion bars, elastic bands of an elastomer or the like to understand.
  • each retractable nail, bolt or screw understood.
  • the propellant gas in preferred embodiments is air, in particular ambient air. But it can also be gases such as air, nitrogen or carbon dioxide from a pressure reservoir or to reaction gases from a combustion.
  • the energy store comprises an elastically deformable solid.
  • Such energy storage generate little heat loss and can be well combined with respect to their spring constants for combination with the gas space.
  • the energy store comprises a rubber-elastic membrane, wherein the membrane forms the further wall portion.
  • a rubber-elastic membrane By widening the gas space volume while the membrane is expanded against its elastic restoring force and thus used as energy storage.
  • the diaphragm initially contracts and, at least in a first movement section of the piston, brings about a homogenization of the gas pressure acting on the piston.
  • the energy store comprises a piston as a further wall section and a spring, wherein the piston is supported against the spring.
  • the advantages of mechanical springs, in particular metal springs can be used with regard to their small installation space and the high possible spring constants.
  • the piston is movable in the same direction of movement as the piston of the energy transmission element. This allows a Particularly simple design of the remaining housing wall of the gas space, for example as a simple or stepped cylinder.
  • the drive gas is conveyed into the gas space by means of a compressor, which is preferably integrated in the housing.
  • a compressor which is preferably integrated in the housing.
  • the compressor preferably comprises an electric drive, wherein the electric drive is particularly preferably driven by an accumulator as an energy source. This allows a wireless device, while the high energy densities of modern batteries can be used at the same time.
  • the drive-in device according to the invention Fig. 1 comprises a hand-held housing 1, in which a power transmission element 2 is accommodated with a drive device 3.
  • the drive device comprises a gas space 7, which can be filled by means of a compressor 9 with a drive gas at a defined pressure.
  • the energy transmission element 2 comprises a drive element 2a in the form of a substantially cylindrical plunger. In a front region of the tacker, a damping stop 4 for the energy transmission element 2 is arranged.
  • Fasteners are received in a magazine 5.
  • a feed mechanism (not shown)
  • a fastener is in each case transported into a chamber, from where it is accelerated by the action of the drive member 2a and driven through a mouth part into a workpiece (not shown).
  • the driving member 2 a is connected to a piston 2 b of the power transmission element 2, wherein the piston 2 b is guided in a cylinder 6.
  • the gas space 7 can be filled with a drive gas, in the present case compressed air, under an overpressure relative to the external pressure.
  • the gas space 7 is enclosed by a rigid wall section which also comprises a pressure-side part of the cylinder 6, the movable piston 2b as the first variable wall section and a rubber-elastic membrane 8 as the second variable wall section.
  • the elastomeric membrane 8 expands depending on the pressure or degree of filling of the gas space 7 against an inherent material tension. As a result, it forms a mechanical energy storage in which energy is stored in addition to the energy in the pressurized gas. To avoid overstretching of the membrane, it is surrounded by a rigid housing wall 1a, against which it can rest at maximum expansion.
  • the compressor 9 is driven by an electric drive, for example a rotating electric motor in conjunction with an oscillating mechanism.
  • the power source of the electric drive is an accumulator 10 provided on the housing 1.
  • ambient air is pumped into the gas space 7 by means of the compressor until a defined pressure is reached. This may in particular be a maximum pressure of the compressor.
  • the membrane 8 from a relaxed state (dashed line in FIG Fig. 1 ) into an expanded and tensioned state (solid line in FIG Fig. 1 ).
  • the device can be triggered if necessary, which is done by an electromechanical release of the previously held energy transfer element 2.
  • the piston 2b is accelerated forward by the applied pressure. Since the membrane initially relaxes, the gas pressure is only slightly reduced, at least in a first movement section.
  • Fig. 2 shows by means of a diagram the relationship between pressure and volume in the gas space 7.
  • the effect of the elastic membrane is a good constancy of the gas pressure, as long as the membrane is in an at least partially tensioned state.
  • the energy transmission element 2 After driving in the fastening means, the energy transmission element 2 is reset by a return spring (not shown) in the starting position and locked. Finally, the refilling of the gas space 7 takes place through the compressor 9.
  • a further piston 11 is provided instead of the rubber-elastic membrane 8, which is movably guided in a rear, shaped as a cylinder 12 portion of the gas space 7 and so forms a to the piston 2b further variable wall portion of the gas space 7.
  • the piston 11 is guided gas-tight against the cylinder 12, wherein the cylinder 12 on which the outside of the piston 11 is freely connected to the atmosphere.
  • the piston 11 is also supported on a plurality of springs 13, which in the present case are coil springs made of metal. In embodiments not shown are torsion, spiral or leaf springs made of metal or Kunsstoff or an elastomer.
  • springs 13 shown schematically, which act depending on the position of the piston as tension springs or as compression springs.
  • the springs 13 can be arranged inside and / or outside the gas space 7. By an at least partial arrangement within the gas space can be saved particularly effective space.
  • the function of the driving device according to the second embodiment is analogous to the first embodiment with the difference that the springs instead of the membrane material form the further mechanical energy storage. It moves the piston 11 increases in pressure in the gas space against the force of the springs 13, so that the gas space increases as in the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)

Claims (8)

  1. Dispositif d'enfoncement comportant :
    un boîtier tenu à la main (1) ayant un élément de transmission d'énergie (2) reçu dans celui-ci pour transmettre de l'énergie à un élément de fixation devant être enfoncé, et
    un dispositif d'entraînement (3) pour transporter l'élément de transmission d'énergie (2),
    dans lequel le dispositif d'entraînement (3) comporte un accumulateur d'énergie avec un compartiment de gaz qui peut être rempli avec un gaz d'entraînement sous une surpression définie,
    dans lequel la surpression dans le compartiment de gaz (7) est présente sous forme d'énergie d'entraînement stockée avant un déclenchement d'une opération d'enfoncement, et
    dans lequel un piston (2b) de l'élément de transmission d'énergie (2) forme une partie de paroi variable du compartiment de gaz (7),
    dans lequel le compartiment de gaz (7) comporte au moins une partie de paroi variable supplémentaire (8, 11) pour faire varier le volume du compartiment, caractérisé en ce qu'un remplissage du compartiment de gaz avec le gaz d'entraînement engendre un mouvement de la partie de paroi variable (8, 11) qui augmente le volume du compartiment et charge un accumulateur d'énergie mécanique (8, 13).
  2. Dispositif d'enfoncement selon la revendication 1, caractérisé en ce que l'accumulateur d'énergie (8, 13) comporte un corps solide élastiquement déformable.
  3. Dispositif d'enfoncement selon la revendication 2, caractérisé en ce que l'accumulateur d'énergie comporte une membrane élastique comme du caoutchouc (8), dans lequel la membrane forme la partie de paroi supplémentaire.
  4. Dispositif d'enfoncement selon la revendication 2, caractérisé en ce que l'accumulateur d'énergie comporte un piston (11) en tant que partie de paroi supplémentaire et un ressort (13), dans lequel le piston (11) est supporté contre le ressort (13).
  5. Dispositif d'enfoncement selon la revendication 4, caractérisé en ce que le piston (11) peut être déplacé dans la même direction de déplacement que le piston (2b) de l'élément de transmission d'énergie (2).
  6. Dispositif d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que le gaz d'entraînement est transporté dans le compartiment de gaz au moyen d'un compresseur (9) en particulier intégré dans le boîtier (1).
  7. Dispositif d'enfoncement selon la revendication 6, caractérisé en ce que le compresseur (9) comporte une commande électrique.
  8. Dispositif d'enfoncement selon la revendication 7, caractérisé en ce que la commande électrique est entraînée au moins facultativement par un accumulateur (10) faisant office de source d'énergie.
EP14766121.9A 2013-09-19 2014-09-03 Dispositif d'entraînement avec accumulateur pneumatique Active EP3046733B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14766121.9A EP3046733B1 (fr) 2013-09-19 2014-09-03 Dispositif d'entraînement avec accumulateur pneumatique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13185168.5A EP2851157A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique
EP14766121.9A EP3046733B1 (fr) 2013-09-19 2014-09-03 Dispositif d'entraînement avec accumulateur pneumatique
PCT/EP2014/068693 WO2015039865A1 (fr) 2013-09-19 2014-09-03 Dispositif d'enfoncement à accumulateur pneumatique

Publications (2)

Publication Number Publication Date
EP3046733A1 EP3046733A1 (fr) 2016-07-27
EP3046733B1 true EP3046733B1 (fr) 2018-01-10

Family

ID=49230566

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13185168.5A Withdrawn EP2851157A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique
EP14766121.9A Active EP3046733B1 (fr) 2013-09-19 2014-09-03 Dispositif d'entraînement avec accumulateur pneumatique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13185168.5A Withdrawn EP2851157A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique

Country Status (5)

Country Link
US (1) US10259110B2 (fr)
EP (2) EP2851157A1 (fr)
CN (1) CN105555484B (fr)
TW (1) TW201520010A (fr)
WO (1) WO2015039865A1 (fr)

Families Citing this family (11)

* 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
WO2016174994A1 (fr) * 2015-04-30 2016-11-03 日立工機株式会社 Outil pour clouer
WO2017045972A1 (fr) * 2015-09-14 2017-03-23 Hilti Aktiengesellschaft Cloueuse fonctionnant au moyen d'un gaz combustible et dotée d'un organe d'alimentation
US11110577B2 (en) 2017-11-16 2021-09-07 Milwaukee Electric Tool Corporation Pneumatic fastener driver
JP7247476B2 (ja) * 2018-05-31 2023-03-29 工機ホールディングス株式会社 打込機
DE102018117519A1 (de) * 2018-07-19 2020-01-23 Prebena Wilfried Bornemann Gmbh & Co. Kg Druckluftbetriebene Austreibvorrichtung
FR3086569B1 (fr) 2018-10-01 2020-12-18 Illinois Tool Works Outil de fixation a gaz et son procede de fonctionnement
US11819989B2 (en) 2020-07-07 2023-11-21 Techtronic Cordless Gp Powered fastener driver
CA3167425A1 (fr) 2021-07-16 2023-01-16 Techtronic Cordless Gp Pose-attaches electrique
EP4201597A1 (fr) * 2021-12-23 2023-06-28 Hilti Aktiengesellschaft Dispositif et procédé d'enfoncement

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Also Published As

Publication number Publication date
CN105555484B (zh) 2018-09-11
US10259110B2 (en) 2019-04-16
EP3046733A1 (fr) 2016-07-27
EP2851157A1 (fr) 2015-03-25
WO2015039865A1 (fr) 2015-03-26
US20160207186A1 (en) 2016-07-21
CN105555484A (zh) 2016-05-04
TW201520010A (zh) 2015-06-01

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