EP3046732B1 - Dispositif de fixation avec accumulateur pneumatique chauffé - Google Patents

Dispositif de fixation avec accumulateur pneumatique chauffé Download PDF

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Publication number
EP3046732B1
EP3046732B1 EP14761324.4A EP14761324A EP3046732B1 EP 3046732 B1 EP3046732 B1 EP 3046732B1 EP 14761324 A EP14761324 A EP 14761324A EP 3046732 B1 EP3046732 B1 EP 3046732B1
Authority
EP
European Patent Office
Prior art keywords
driving tool
tool according
drive
gas
energy
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
EP14761324.4A
Other languages
German (de)
English (en)
Other versions
EP3046732A1 (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
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
Priority to EP14761324.4A priority Critical patent/EP3046732B1/fr
Publication of EP3046732A1 publication Critical patent/EP3046732A1/fr
Application granted granted Critical
Publication of EP3046732B1 publication Critical patent/EP3046732B1/fr
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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
    • B25C1/04—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
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure

Definitions

  • the invention relates to a tacker according to the preamble of claim 1.
  • a heating element in the sense of the invention means any component by means of which a quantity of heat can be introduced into the drive gas in a defined, preferably controllable manner.
  • the heat energy can be converted from originally stored chemically or physically stored energy, in principle, all storage forms come into consideration. For example, besides electric heating elements, combustion processes, catalytic exothermic reactions or the like as a heat source are also possible.
  • each retractable nail, bolt, staple, pin or a screw is understood.
  • the drive gas 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. It is essential in the context of the invention that the drive gas is stored in the gas space under pressure until the driving operation is triggered. Therefore, after loading the gas space, a temperature of the drive gas is usually present, which is above an ambient temperature and is therefore exposed to a dissipative energy loss.
  • the drive gas is conveyed by means of a preferably integrated in the housing compressor in the gas space.
  • the compressor preferably comprises an electric drive, wherein the electric drive is particularly preferably driven by an accumulator as an energy source.
  • the compressor comprises the piston, so that the drive gas is compressed by a movement of the piston to the gas space.
  • a drive of the compressor is heat-conducting connected to the gas space, so that waste heat of the drive is used to reduce the cooling and the associated decrease in pressure in the gas space.
  • the heat-conducting connection is realized by a flow passage through which a medium, for example Cooling air flows from the drive to the gas space.
  • the drive is arranged in or on the gas space.
  • the drive device comprises an ignition element which is provided for igniting the drive gas and is preferably arranged in the gas space.
  • the gas space is then a combustion chamber.
  • the gas space is thermally conductively connected to an exhaust gas channel for exhaust gas formed during the combustion of the drive gas, so that exhaust gas heat is used to reduce the cooling and the associated drop in pressure in the gas space. This makes it possible to save heating energy for the heating element.
  • a wall of the gas space can be flowed through with the exhaust gas, for example as part of the exhaust gas duct.
  • the heating element is designed as an electrical heating element.
  • This may be, for example, a simple heating wire, which is arranged within the gas space and is in contact with the drive gas.
  • the heating element can also be designed as a PTC heating element.
  • PTC positive temperature coefficient
  • the heating element may comprise a heat accumulator in order to enable a heat flow into the drive gas even when the energy supply is switched off.
  • the heating element can be controlled by means of a control circuit in dependence on a measured temperature or another operating parameter.
  • the operating parameter may be, for example, a time difference since a loading process of the gas space.
  • Fig. 1 shows a schematic sectional view of a driving device according to the invention.
  • 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 gas space is pressurized by the energy transfer element is moved to the gas space with the gas space closed, so that the compressor comprises the energy transfer element.
  • the energy transmission element 2 comprises a drive element 2a in the form of a substantially cylindrical plunger. Fasteners are received in a magazine 5. By 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.
  • a drive gas in the present case compressed air
  • the gas space 7 is enclosed by a rigid wall portion, which also includes a pressure-side part of the cylinder 6, and the movable piston 2b as a variable wall portion.
  • a heating element 8 is arranged, by means of which heat energy can be transmitted to the drive gas.
  • the heating element 8 is designed schematically as a simple electrical heating coil of a heating wire.
  • the heating wire is located in a central region of the gas space in order to allow the fastest possible and uniform heat transfer to the drive gas.
  • 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 4 provided on the housing 1.
  • the device can be triggered if necessary, which is done by an electromechanical release of the previously held energy transfer element 2. After its release, the piston 2b is accelerated forward by the applied pressure.
  • the heating element 8 is activated.
  • the heating element is heated by the electrical energy of the accumulator 4.
  • the control of the heating element 4 can be carried out in particular via a central control circuit of the driving device.
  • 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.

Landscapes

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

Claims (10)

  1. Dispositif d'enfoncement comportant :
    un boîtier (1) tenu à la main avec un élément de transmission d'énergie (2) reçu dans celui-ci pour transmettre de l'énergie à un élément de fixation à enfoncer, 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 d'un gaz propulsif sous une surpression définie,
    dans lequel la surpression dans le compartiment de gaz (7) est présente sous forme d'énergie motrice accumulée avant un déclenchement d'une opération d'enfoncement, et
    dans lequel un piston (2b) de l'élément de transmission d'énergie (2) forme un segment de paroi variable du compartiment de gaz (7),
    et dans lequel le gaz propulsif est présent sous forme d'air comprimé, caractérisé en ce que de l'énergie thermique peut être transmise dans le gaz propulsif enfermé dans le compartiment de gaz (7) par l'intermédiaire d'un élément de chauffage (8).
  2. Dispositif d'enfoncement selon la revendication 1, caractérisé en ce que le gaz propulsif est transporté dans le compartiment de gaz au moyen d'un compresseur (9) intégré notamment dans le boîtier (1).
  3. Dispositif d'enfoncement selon la revendication 2, caractérisé en ce que le compresseur (9) comporte un mécanisme d'entraînement électrique.
  4. Dispositif d'enfoncement selon la revendication 3, caractérisé en ce que le mécanisme d'entraînement électrique est au moins facultativement entraîné par un accumulateur (4) faisant office de source d'énergie.
  5. Dispositif d'enfoncement selon l'une des revendications 2 à 4, caractérisé en ce que le compresseur (9) comporte le piston (2b).
  6. Dispositif d'enfoncement selon l'une des revendications 2 à 5, caractérisé en ce qu'un entraînement du compresseur est relié au compartiment de gaz (7) de manière thermiquement conductrice, en particulier par l'intermédiaire d'un canal d'écoulement, et est agencé notamment dans ou sur le compartiment de gaz (7).
  7. Dispositif d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de chauffage (8) est formé comme un élément de chauffage électrique.
  8. Dispositif d'enfoncement selon la revendication 7, caractérisé en ce que l'élément de chauffage (8) est formé comme un élément de chauffage PTC.
  9. Dispositif d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de chauffage (8) comporte un accumulateur de chaleur.
  10. Dispositif d'enfoncement selon l'une des revendications précédentes, caractérisé en ce que l'élément de chauffage (8) peut être commandé au moyen d'un circuit de commande en fonction d'une température mesurée, d'une pression mesurée ou d'un autre paramètre de fonctionnement.
EP14761324.4A 2013-09-19 2014-09-03 Dispositif de fixation avec accumulateur pneumatique chauffé Active EP3046732B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14761324.4A EP3046732B1 (fr) 2013-09-19 2014-09-03 Dispositif de fixation avec accumulateur pneumatique chauffé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13185169.3A EP2851158A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique chauffé
PCT/EP2014/068703 WO2015039866A1 (fr) 2013-09-19 2014-09-03 Dispositif d'enfoncement à accumulateur pneumatique chauffé
EP14761324.4A EP3046732B1 (fr) 2013-09-19 2014-09-03 Dispositif de fixation avec accumulateur pneumatique chauffé

Publications (2)

Publication Number Publication Date
EP3046732A1 EP3046732A1 (fr) 2016-07-27
EP3046732B1 true EP3046732B1 (fr) 2018-03-28

Family

ID=49230567

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13185169.3A Withdrawn EP2851158A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique chauffé
EP14761324.4A Active EP3046732B1 (fr) 2013-09-19 2014-09-03 Dispositif de fixation avec accumulateur pneumatique chauffé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13185169.3A Withdrawn EP2851158A1 (fr) 2013-09-19 2013-09-19 Dispositif d'entraînement avec accumulateur pneumatique chauffé

Country Status (3)

Country Link
US (1) US10201892B2 (fr)
EP (2) EP2851158A1 (fr)
WO (1) WO2015039866A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886258A1 (fr) * 2013-12-18 2015-06-24 HILTI Aktiengesellschaft Appareil d'enfoncement
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
US11110577B2 (en) 2017-11-16 2021-09-07 Milwaukee Electric Tool Corporation Pneumatic fastener driver
EP3520967A1 (fr) 2018-01-19 2019-08-07 Max Co., Ltd. Outil d'enfoncement de type combustion à gaz
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

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US4712379A (en) * 1987-01-08 1987-12-15 Pow-R Tools Corporation Manual recycler for detonating impact tool
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Also Published As

Publication number Publication date
EP3046732A1 (fr) 2016-07-27
US20160214249A1 (en) 2016-07-28
EP2851158A1 (fr) 2015-03-25
US10201892B2 (en) 2019-02-12
WO2015039866A1 (fr) 2015-03-26

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