EP3323561A1 - Appareil de pose et procédé de fonctionnement d'un appareil de pose - Google Patents

Appareil de pose et procédé de fonctionnement d'un appareil de pose Download PDF

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Publication number
EP3323561A1
EP3323561A1 EP16199459.5A EP16199459A EP3323561A1 EP 3323561 A1 EP3323561 A1 EP 3323561A1 EP 16199459 A EP16199459 A EP 16199459A EP 3323561 A1 EP3323561 A1 EP 3323561A1
Authority
EP
European Patent Office
Prior art keywords
flywheel
driving element
driving
setting
setting tool
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.)
Withdrawn
Application number
EP16199459.5A
Other languages
German (de)
English (en)
Inventor
Tilo Dittrich
Raphael Thon
Dominik Schmidt
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 EP16199459.5A priority Critical patent/EP3323561A1/fr
Priority to US16/461,575 priority patent/US20190366524A1/en
Priority to EP17803857.6A priority patent/EP3541579A1/fr
Priority to PCT/EP2017/079147 priority patent/WO2018091441A1/fr
Publication of EP3323561A1 publication Critical patent/EP3323561A1/fr
Withdrawn legal-status Critical Current

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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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention relates to a flywheel-driven setting tool for driving fasteners into a ground, with a drive in a setting direction by a flywheel driving element having a connection region in which the driving element for transmitting a driving force from the flywheel to the driving element with the flywheel is connectable.
  • the invention further relates to a method for operating such a setting device.
  • the object of the invention is the efficiency of driving fasteners into a ground, with a setting device with a drive in a setting direction by flywheel driving element having a connection region in which the driving element for transmitting a driving force from the flywheel to the driving element with the Flywheel is connectable, increase.
  • the object is in a flywheel-driven setting tool for driving fasteners into a ground, with a drive in a setting direction by a flywheel driving element having a connection region in which the driving element for transmitting a driving force from the flywheel to the driving element with the flywheel is connectable , in that the connecting region of the driving element comprises at least one frictionally engaging connecting section for frictional engagement and at least one interlocking connecting section for depicting a positive connection between the flywheel and the driving element.
  • the flywheel-driven setting tool is preferably a hand-held setting tool, which is also referred to as a setting tool.
  • the fasteners are, for example, nails or bolts, which are driven into the ground with the aid of the setting device, which is also referred to as a setting tool.
  • the set energy is advantageously provided by an electric motor and transmitted via the flywheel to the driving element, which is also referred to as setting piston.
  • the flywheel is rotated by the electric motor.
  • the rotational energy of the flywheel is for a setting process on the driving element, in particular the setting piston, which is also abbreviated as piston, transmitted.
  • the driving element in particular of the piston
  • the fastener is driven into the ground.
  • the flywheel for example by means of a suitable coupling device, is initially connected in a frictional engagement with the drive-in element.
  • the driving element between the flywheel and a counter-roller can be arranged.
  • the driving element translationally moving in the setting tool is additionally connected in a form-fitting manner to the flywheel, in particular after cancellation of the frictional connection, in order to ensure a slip-free power transmission.
  • the flywheel is preferably connected directly to the driving element. But it is also possible to arrange at least one further power transmission between the flywheel and the driving element.
  • the efficiency of the setting device can be significantly improved.
  • the function of the power transmission takes place separately with each setting in two ways. After a setting operation, the driving element is released from the flywheel by opening the coupling device. The driving element can then be returned to its starting position by a suitable return device, for example by a spring device.
  • a preferred embodiment of the flywheel-driven setting tool is characterized in that the flywheel in the ReibBanktellsabites has at least one friction surface which is frictionally connected to a counter-friction surface on the driving element.
  • the frictional engagement can be made in a similar way to conventional setting tools in which the driving element is frictionally connected to the flywheel.
  • the friction surface on the flywheel or the counter-friction surface on the driving element is designed to be particularly abrasion-resistant and / or wear-resistant and / or has an increased coefficient of friction.
  • the desired properties of the friction surface can be realized, for example, by means of a surface treatment, in particular by a thermal spray coating.
  • the special design of the friction surface on the flywheel or the counter friction surface on the driving element advantageously ensures that little or no abrasion occurs during operation of the setting device, which could undesirably impair the function of the positive connection section on the driving element.
  • a further preferred exemplary embodiment of the flywheel-driven setting tool is characterized in that the flywheel has at least one V-groove in the frictionally engaging connecting section, which is frictionally connectable to a counter-V-groove on the driving element.
  • the friction surface is advantageously increased. This provides the advantage that less slip occurs in the frictional connection between the flywheel and driving element.
  • a further preferred embodiment of the flywheel-driven setting tool is characterized in that the flywheel in the positive connection connecting portion has at least one positive locking structure, in particular a toothing, which with a complementary form-fitting structure, in particular a counter-toothing, on the driving-in element can be positively connected.
  • the form-fitting structure comprises, for example, an external toothing on the flywheel.
  • the external toothing on the flywheel is for example in engagement with a rack-like toothing on the driving element.
  • a further preferred exemplary embodiment of the flywheel-driven setting tool is characterized in that the complementary form-fitting structure, in particular the counter-toothing, is arranged in a rear region of the driving-in element which is remote from a setting end.
  • the driving element is in the setting tool preferably translationally to the setting end to and from the setting away back and forth movable.
  • the complementary positive locking structure is preferably arranged in a region of the driving element, in which, during operation of the setting device, a flywheel peripheral speed corresponds to the speed of the translationally moving driving element.
  • the acceleration to the desired common speed is achieved by the frictional engagement between the driving element and the flywheel.
  • a further preferred embodiment of the flywheel-driven setting tool is characterized in that the form-fitting pairing between the flywheel and the driving element is combined with at least one damping element.
  • the damping element is advantageously used to keep the load of the form-fitting structure on the flywheel and the complementary positive locking structure on the driving element in establishing the positive connection within predetermined limits. As a result, undesired wear during the production of positive engagement between the flywheel and the driving element can be further reduced.
  • the above-mentioned object is alternatively or additionally achieved in that a drive torque provided by a drive motor is frictionally transmitted from one or the flywheel in a first power transmission step and in a second power transmission step to the driving element. Due to the frictional connection, the driving element is accelerated to a desired speed in a first time period by the frictional engagement with the flywheel. Once the desired speed is reached, the driving element is then positively connected to the flywheel.
  • the positive connection ensures in a simple manner that the force or acceleration of the driving element is transmitted without slippage to a fastening element at the setting end of the setting device. As a result, a particularly effective driving of fasteners, especially in hard surfaces, is simplified.
  • a preferred embodiment of the method is characterized in that the frictional power transmission decoupled and / or the positive power transmission is initiated when the flywheel has accelerated the driving element to its maximum speed.
  • the acceleration of the driving element to its maximum speed preferably takes place frictionally. As a result, unwanted wear during acceleration of the driving element can be kept small.
  • the invention further relates to a driving element and / or a flywheel for a previously described setting tool.
  • the driving element and the flywheel are separately tradeable.
  • FIGS. 1 and 2 is a flywheel driven setting tool 1 shown simplified with a housing 2.
  • the setting tool 1 is designed as a hand-operated setting tool with a handle 4 and a setting end 5.
  • the setting device or setting tool 1 is used for driving fasteners 24 in a (not shown) underground.
  • a desired number of fasteners 24 is stored in a magazine 6 at the setting end 5. From the magazine 6, the fastening elements 24, preferably automatically, provided individually in a bolt guide 8.
  • the energy required for driving in the fastening elements 24 is provided, for example, in the form of electrical energy in an accumulator 10 at the lower end of the handle 4.
  • the electrical energy stored in the accumulator 10 is converted into rotational energy by means of an electric motor (not shown), which is advantageously integrated in a flywheel 13.
  • the flywheel 13 is rotated about a flywheel rotation axis 15 in rotation, as indicated by an arrow 16 in the FIGS. 1 and 2 is indicated.
  • a trigger or operating knob 12 on the handle 4 is a built-in setting tool 1 clutch, which is designed for example as a helical gear, so concluded that the rotational energy stored in the flywheel 13 is transmitted to a driving-in element 20 for triggering the setting process as translational energy.
  • the driving element 20 represents a setting piston 22, which is shortened referred to as a piston.
  • the setting piston 22 and the driving element 20 is arranged between the flywheel 13 and a counter-roller 17.
  • the counter-roller 17 is rotatable about a counter-roller rotation axis 18, which is arranged parallel to the flywheel rotation axis 15.
  • the counter-rollers 17, with the flywheel 13 and the driving element 20 arranged therebetween, constitute a clutch which, as will be explained below, is actuated by an electromagnet 37.
  • the setting piston 22 has at its in the FIGS. 1 and 2 left end of a piston tip 23, with which the fastener 24 at the setting end 5 of the setting device 1 in the (not shown) underground can be driven.
  • the setting piston 22 and the driving element 20 is in the setting tool 1 by means of at least one piston guide 30 in the axial direction, ie in the FIGS. 1 and 2 to the left and to the right, moved back and forth.
  • the piston guide 30 comprises two guide rollers 31, 32. To drive in the fastening element 24, the setting piston 22 with its piston tip 23 is moved toward the fastening element 24 with great acceleration by the piston guide 30. After a setting process, the setting piston 22 by means of a return spring 34 back into his in the FIGS. 1 and 2 shown starting position moves.
  • the coupling in the setting tool 1 comprises a wedge 35, which is movable with a plunger 36 by the electromagnet 37 to the counter-roller 17 in FIG. 1 to press down against the driving element 20.
  • the setting tool 1 is shown before a clutch release.
  • FIG. 1 shows the setting tool 1 immediately before a setting process.
  • the flywheel 13 has been rotated, for example, by an integrated brushless electric motor and thus has energy in the form of rotational energy, as indicated by the arrow 16 in FIG FIG. 1 is indicated.
  • the driving element 20 comprises on its side facing the flywheel 13 a connecting portion 40.
  • the connecting portion 40 is divided into a frictional engagement portion 41 and a positive connection portion 42.
  • the driving element 20 is purely frictionally connected to the flywheel 13.
  • the driving element 20 is connected in a purely positive fit with the flywheel 13.
  • FIGS. 3 and 4 is a section of FIG. 2 represented with the driving element 20 and the flywheel 13 alone in two different views.
  • a friction surface 51 of the flywheel 13 is frictionally connected to a counter friction surface 52 of the driving element 20.
  • the counter friction surface 52 extends over the frictionally engaged portion 41 on the driving member 20.
  • the driving element 20 has teeth 61, 62.
  • the teeth 61, 62 constitute a positive locking structure 64 on the driving element 20.
  • the flywheel 13 comprises a complementary positive locking structure 65
  • FIG. 4 is the complementary form-fitting structure 65 arranged below.
  • FIGS. 3 and 4 was the trigger (12 in the FIGS. 1 and 2 ) of the setting device 1 and the setting piston 22 is finally pressed on the flywheel 13 via the electromagnet 37 and the counter-roller 17.
  • the connection between the flywheel 13 and setting piston 22 is exclusively frictionally engaged.
  • the setting piston 22 is rotated by the flywheel 13 in the linear direction (in FIG. 3 to the left).
  • the flywheel 13 is connected by a positive connection 60 with the driving element 20.
  • the teeth 61, 62 of the form-fitting structure 64 are positively connected to the in FIG. 6 connected above complementary complementary form-locking structure 65.
  • FIG. 5 shows the flywheel 13 and the driving element 20 just before the setting piston 22 has reached its bottom dead center position.
  • the frictional connection is in the in the FIGS. 5 and 6 repealed piston position shown.
  • the friction surface 51 on the flywheel 13 does not touch the counter friction surface 52 on the driving element 20.
  • FIGS. 7 and 8 the flywheel 13 and the driving element 20 are shown in sectional view.
  • FIG. 7 is schematically indicated on the flywheel 13 a tooth flank contour, which represents a form-fitting structure 70.
  • the interlocking structure 70 is used together with the teeth 61, 62 for producing the positive connection at the end of the piston stroke.
  • FIG. 9 a Cartesian coordinate diagram is shown with an x-axis 75 and a y-axis 76. On the x-axis 75 a time is plotted in a suitable time unit. On the y-axis 76, a force is applied in a suitable power unit.
  • a solid line 81 a ReibBankkraftverlauf a frictional power transmission between the flywheel 13 and the driving element 20 is shown.
  • a dashed line 82 a positive connection force course of a positive power transmission between the flywheel 13 and the driving element 20 is shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Mechanical Operated Clutches (AREA)
EP16199459.5A 2016-11-18 2016-11-18 Appareil de pose et procédé de fonctionnement d'un appareil de pose Withdrawn EP3323561A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16199459.5A EP3323561A1 (fr) 2016-11-18 2016-11-18 Appareil de pose et procédé de fonctionnement d'un appareil de pose
US16/461,575 US20190366524A1 (en) 2016-11-18 2017-11-14 Setting device and method for operating a setting device
EP17803857.6A EP3541579A1 (fr) 2016-11-18 2017-11-14 Pistolet de pose et procédé pour faire fonctionner un pistolet de pose
PCT/EP2017/079147 WO2018091441A1 (fr) 2016-11-18 2017-11-14 Pistolet de pose et procédé pour faire fonctionner un pistolet de pose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16199459.5A EP3323561A1 (fr) 2016-11-18 2016-11-18 Appareil de pose et procédé de fonctionnement d'un appareil de pose

Publications (1)

Publication Number Publication Date
EP3323561A1 true EP3323561A1 (fr) 2018-05-23

Family

ID=57348544

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16199459.5A Withdrawn EP3323561A1 (fr) 2016-11-18 2016-11-18 Appareil de pose et procédé de fonctionnement d'un appareil de pose
EP17803857.6A Withdrawn EP3541579A1 (fr) 2016-11-18 2017-11-14 Pistolet de pose et procédé pour faire fonctionner un pistolet de pose

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17803857.6A Withdrawn EP3541579A1 (fr) 2016-11-18 2017-11-14 Pistolet de pose et procédé pour faire fonctionner un pistolet de pose

Country Status (3)

Country Link
US (1) US20190366524A1 (fr)
EP (2) EP3323561A1 (fr)
WO (1) WO2018091441A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI791263B (zh) * 2021-08-17 2023-02-01 力肯實業股份有限公司 電動打釘機之擊釘驅動裝置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070210134A1 (en) * 2006-03-09 2007-09-13 Hiroyuki Oda Portable driver
US20090032566A1 (en) 2007-08-03 2009-02-05 Chia-Sheng Liang Transmission Mechanism for Electrical Nail Gun
EP2433752A2 (fr) 2010-09-28 2012-03-28 Basso Industry Corp. Unité d'entraînement pour cloueuse électrique
EP2711135A2 (fr) 2012-09-20 2014-03-26 Black & Decker Inc. Cadre de levage magnétique
EP2716409A2 (fr) 2012-10-04 2014-04-09 Black & Decker Inc. Système d'activation doté d'un bras multi-angles et mécanisme de libération de blocage
EP2979821A1 (fr) * 2014-07-28 2016-02-03 Black & Decker, Inc. Mécanisme d'entraînement d'outil électrique
US20160214248A1 (en) * 2015-01-23 2016-07-28 Tricord Solutions, Inc. Fastener driving apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070210134A1 (en) * 2006-03-09 2007-09-13 Hiroyuki Oda Portable driver
US20090032566A1 (en) 2007-08-03 2009-02-05 Chia-Sheng Liang Transmission Mechanism for Electrical Nail Gun
EP2433752A2 (fr) 2010-09-28 2012-03-28 Basso Industry Corp. Unité d'entraînement pour cloueuse électrique
EP2711135A2 (fr) 2012-09-20 2014-03-26 Black & Decker Inc. Cadre de levage magnétique
EP2716409A2 (fr) 2012-10-04 2014-04-09 Black & Decker Inc. Système d'activation doté d'un bras multi-angles et mécanisme de libération de blocage
EP2979821A1 (fr) * 2014-07-28 2016-02-03 Black & Decker, Inc. Mécanisme d'entraînement d'outil électrique
US20160214248A1 (en) * 2015-01-23 2016-07-28 Tricord Solutions, Inc. Fastener driving apparatus

Also Published As

Publication number Publication date
WO2018091441A1 (fr) 2018-05-24
US20190366524A1 (en) 2019-12-05
EP3541579A1 (fr) 2019-09-25

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