EP3578305A1 - Appareil de pose - Google Patents

Appareil de pose Download PDF

Info

Publication number
EP3578305A1
EP3578305A1 EP18176186.7A EP18176186A EP3578305A1 EP 3578305 A1 EP3578305 A1 EP 3578305A1 EP 18176186 A EP18176186 A EP 18176186A EP 3578305 A1 EP3578305 A1 EP 3578305A1
Authority
EP
European Patent Office
Prior art keywords
capacitor
setting
setting tool
axis
tool according
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Withdrawn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
EP18176186.7A
Other languages
German (de)
English (en)
Inventor
Tilo Dittrich
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 EP18176186.7A priority Critical patent/EP3578305A1/fr
Priority to EP19726707.3A priority patent/EP3801996A1/fr
Priority to PCT/EP2019/063951 priority patent/WO2019233849A1/fr
Priority to JP2020567824A priority patent/JP2021525178A/ja
Priority to AU2019283302A priority patent/AU2019283302A1/en
Priority to US17/051,660 priority patent/US11667022B2/en
Priority to TW108119410A priority patent/TWI844546B/zh
Publication of EP3578305A1 publication Critical patent/EP3578305A1/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Withdrawn legal-status Critical Current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 present invention relates to a setting device for driving fasteners into a substrate.
  • Such setting tools usually have a receptacle for a fastening element, from which a fastener received therein is conveyed along a setting axis into the ground.
  • a driving element is for this purpose driven by a drive along the setting axis to the fastener.
  • the drive has an electrical capacitor and a coil.
  • the capacitor is discharged via the coil, whereby a Lorentz force acts on the driving element, so that the driving element is moved towards a nail.
  • the object of the present invention is to provide a setting device of the aforementioned type, in which a high efficiency and / or a good setting quality is ensured.
  • a setting tool for driving fasteners into a substrate comprising a receptacle, which is intended to receive a fastener, a driving element, which is intended to convey a recorded in the receiving fastener along a setting axis in the ground a drive which is provided for driving the driving element along the setting axis onto the fastening element, wherein the drive comprises an electric capacitor which is arranged on the setting axis or around the setting axis, preferably completely enclosing the setting axis.
  • the setting tool is preferably handheld used. Alternatively, the setting device can be used stationary or semi-stationary.
  • a capacitor in the sense of the invention is to be understood as meaning an electrical component which stores electrical charge and the energy associated therewith in an electric field.
  • a capacitor has two electrically conductive electrodes, between which the electric field builds up when the electrodes are electrically charged differently.
  • a fastener according to the invention for example, a nail, a pin, a clip, a clip, a bolt, in particular threaded bolt or the like to understand.
  • a preferred embodiment is characterized in that the capacitor is arranged axially offset with respect to the setting axis to the driving element and radially overlapping with the driving element.
  • the receptacle is arranged in front of the driving element and the capacitor behind the driving element.
  • a preferred embodiment is characterized in that the capacitor is arranged around the drive-in element.
  • a preferred embodiment is characterized in that the capacitor has a center of gravity, which is arranged substantially on the setting axis.
  • a preferred embodiment is characterized in that the capacitor comprises electrodes which are arranged on a carrier film wound around a winding axis.
  • the winding axis is oriented parallel to the setting axis.
  • the winding axis coincides with the setting axis.
  • An expansion of the capacitor in the direction of the winding axis is preferably at most 1.4 times, preferably at most 1.2 times as large, particularly preferably at most as large as an extension, for example a diameter, of the capacitor perpendicular to the winding axis.
  • a preferred embodiment is characterized in that the setting device comprises a damping element, via which the capacitor is mounted damped on the other setting device.
  • the damping element damps movements of the capacitor relative to the rest of the setting device along the setting axis.
  • the damping element is arranged on a receiving side facing the end of the capacitor.
  • the damping element covers the end face of the capacitor completely or substantially completely.
  • a preferred embodiment is characterized in that the drive comprises at least one electrical line leading away from the capacitor, which has a strain geometry for compensating relative movements between the capacitor and the rest of the setting device.
  • the expansion geometry preferably comprises a bow, a loop or a helix.
  • a preferred embodiment is characterized in that the drive comprises at least one electric line leading away from the capacitor, which is electrically connected to an electrode of the capacitor at an end face of the capacitor facing the receptacle.
  • the line is preferably soldered, welded or screwed to the electrode.
  • a preferred embodiment is characterized in that the capacitor has an internal resistance of less than 8 milliohms, preferably less than 6 milliohms, more preferably less than 4 milliohms.
  • a preferred embodiment is characterized in that the drive has a squirrel cage disposed on the squirrel cage and an excitation coil, which is traversed by a discharge of the capacitor with current and generates a magnetic field, which accelerates the driving element to the fastener.
  • Fig. 1 is a hand-held setting tool 10 for driving fasteners shown in a background, not shown.
  • the setting tool 10 has a receptacle 20 designed as a pin guide, in which a fastening element 30 embodied as a nail is received in order to be driven into the underground along a setting axis A (in FIG Fig. 1 to the left).
  • the setting device 10 comprises a magazine 40 in which the fastening elements are accommodated individually or in the form of a fastener element strip 50 and are transported gradually into the receptacle 20.
  • the magazine 40 has for this purpose an unspecified spring-loaded feed element.
  • the setting device 10 has a drive-in element 60 which has a piston plate 70 and a piston rod 80 includes.
  • the driving-in element 60 is intended to transport the fastening element 30 out of the receptacle 20 along the setting axis A into the ground.
  • the driving element 60 is guided with its piston plate 70 in a guide cylinder 95 along the setting axis A.
  • the driving element 60 in turn is driven by a drive which comprises a squirrel cage 90 arranged on the piston plate 70, an excitation coil 100, a soft magnetic frame 105, a circuit 200 and a capacitor 300 with an internal resistance of 5 mOhm.
  • the short-circuit rotor 90 consists of a preferably annular, particularly preferably annular element with a low electrical resistance, for example copper, and is fastened on the side facing away from the receptacle 20 side of the piston plate 70 on the piston plate 70, for example, soldered, welded, glued, clamped or positively connected.
  • the piston plate itself is designed as a squirrel-cage rotor.
  • the circuit 200 is intended to cause a rapid electrical discharge of the previously charged capacitor 300 and to guide the discharge current flowing through it through the excitation coil 100, which is embedded in the frame 105.
  • the frame preferably has a saturation flux density of at least 1.0 T and / or an effective specific electric conductivity of at most 10 6 S / m, so that a magnetic field generated by the exciting coil 100 is amplified by the frame 105 and suppress eddy currents in the frame 105 become.
  • This developing and thus changing secondary current in turn generates a secondary magnetic field, which is opposite to the excitation magnetic field, whereby the squirrel cage rotor 90 experiences a repelling of the excitation coil 100 Lorentz force which drives the driving element 60 on the receptacle 20 and the fastener 30 received therein ,
  • the setting device 10 further comprises a housing 110, in which the drive is accommodated, a handle 120 with an actuating element 130 designed as a trigger, an electrical energy accumulator 140 designed as an accumulator, a control unit 150, a Trigger switch 160, a contact pressure switch 170, as a means disposed on the frame 105 temperature sensor 180 means for detecting a temperature of the excitation coil 100 and electrical connection lines 141, 161, 171, 181, 201, 301, which the control unit 150 with the electrical energy storage 140, the trigger switch 160, the pressure switch 170, the temperature sensor 180, the circuit 200 and the capacitor 300 connect.
  • the setting tool 10 is supplied instead of the electrical energy storage 140 or in addition to the electrical energy storage 140 by means of a power cable with electrical energy.
  • the control unit comprises electronic components, preferably interconnected on a circuit board to one or more control circuits, in particular one or more microprocessors.
  • the control unit 150 initiates a capacitor charging process, in which electrical energy is conducted by means of the connecting line 141 from the electrical energy storage 140 to the control unit 150 and by means of the connecting lines 301 from the control unit 150 to the capacitor 300 to charge the capacitor 300 ,
  • the control unit 150 comprises a switching converter (not designated in more detail) which converts the electric current from the electrical energy store 140 into a suitable charging current for the capacitor 300.
  • the control unit initiates the capacitor charging process already when the setting device is switched on or when the setting device is lifted off the ground or at the end of a preceding driving operation.
  • the actuating element 130 If the actuating element 130 is actuated when the setting tool 10 is ready for setting, for example by pulling with the index finger of the hand, which encompasses the handle 120, the actuating element 130 actuates the trigger switch 160, which thereby transmits a triggering signal to the control unit 150 via the connecting line 161. Triggered by this, the control unit 150 initiates a capacitor discharging operation in which The electrical energy stored in the capacitor 300 is conducted from the capacitor 300 to the excitation coil 100 by means of the circuit 200, by discharging the capacitor 300.
  • the in Fig. 1 Schematically illustrated circuit 200 for this purpose comprises two discharge lines 210, 220 which connect the capacitor 300 to the excitation coil 200 and of which at least one discharge line 210 is interrupted by a normally open discharge switch 230.
  • the circuit 200 forms an electrical resonant circuit with the exciter coil 100 and the capacitor 300. A swinging back and forth of this resonant circuit and / or a negative charging of the capacitor 300 may have a negative effect on an efficiency of the drive, but can be prevented by means of a freewheeling diode 240.
  • the discharge lines 210, 220 are electrically connected by means of one of the receptacle 20 facing the end face 360 of the capacitor 300 electrical contacts 370, 380 of the capacitor 300, each with an electrode 310, 320 of the capacitor 300, for example by soldering, welding, screwing, jamming or form-fitting.
  • the discharge switch 230 is preferably suitable for switching a discharge current with high current and is designed, for example, as a thyristor.
  • the discharge lines 210, 220 have a small distance from one another, so that a parasitic magnetic field induced by them is as small as possible.
  • the discharge lines 210, 220 are combined into a bus bar and held together by a suitable means, for example a holder or a clamp.
  • the freewheeling diode is electrically connected in parallel to the discharge switch. In further embodiments, not shown, no free-wheeling diode is provided in the circuit.
  • the control unit 150 closes the discharge switch 230 by means of the connection line 201, whereby a discharge current of the capacitor 300 flows through the exciter coil 100 with high current intensity.
  • the rapidly increasing discharge current induces a field magnetic field, which passes through the squirrel-cage rotor 90 and induces in its squirrel-cage rotor 90, in turn, an annular secondary electric current.
  • This secondary current that builds up in turn generates a secondary magnetic field which is opposite to the excitation magnetic field, whereby the squirrel cage rotor 90 experiences a Lorentz force repelling the exciting coil 100, which drives the driving element 60 onto the receptacle 20 and the fastening element 30 received therein.
  • the capacitor 300 in particular its center of gravity, is arranged on the setting axis A behind the driving element 60, whereas the receptacle 20 is arranged in front of the driving element 60.
  • the capacitor 300 is thus arranged axially offset from the driving-in element 60 and radially overlapping with the driving-in element 60.
  • a short length of the discharge lines 210, 220 can be realized, as a result of which the resistances thereof can be reduced and thus an efficiency of the drive can be increased.
  • a small distance of a center of gravity of the setting device 10 to the setting axis A can be realized. As a result, tilting moments during a recoil of the setting device 10 during a driving operation are low.
  • the capacitor is arranged around the driving element around.
  • the electrodes 310, 320 are arranged on opposite sides on a carrier film 330 wound around a winding axis, for example by metallization of the carrier film 330, in particular vapor-deposited, the winding axis coinciding with the setting axis A.
  • the carrier foil with the electrodes is wound around the winding axis so that a passage remains along the winding axis.
  • the capacitor is arranged for example around the setting axis.
  • the carrier foil 330 has a foil thickness of between 2.5 ⁇ m and 4.8 ⁇ m for a charging voltage of the capacitor 300 of 1500 V, and a foil thickness of, for example, 9.6 ⁇ m for a charging voltage of the capacitor 300 of 3000 V.
  • the carrier film is in turn composed of two or more individual films stacked on top of each other.
  • the electrodes 310, 320 have a sheet resistance of 50 ohm / ⁇ .
  • a surface of the capacitor 300 has the shape of a cylinder, in particular a circular cylinder whose cylinder axis coincides with the setting axis A.
  • a height of this cylinder in the direction of the winding axis is substantially as large as its diameter measured perpendicular to the winding axis. Due to a low ratio of height to diameter of the cylinder, a low internal resistance at relatively high capacity of the capacitor 300 and not least achieves a compact design of the setting device 10.
  • a low internal resistance of the capacitor 300 is also achieved by a large cross-section of the electrodes 310, 320, in particular by a high layer thickness of the electrodes 310, 320, wherein the effects of the layer thickness on a self-healing effect and / or a lifetime of the capacitor 300 are to be considered.
  • the capacitor 300 is damped by means of a damping element 350 mounted on the other setting tool 10.
  • the damping element 350 damps movements of the capacitor 300 relative to the rest of the setting device 10 along the setting axis A.
  • the damping element 350 is arranged on the end face 360 of the capacitor 300 and covers the end face 360 completely.
  • the electrical contacts 370, 380 protrude from the end face 360 and penetrate the damping element 350.
  • the damping element 350 has for this purpose in each case an exemption, through which the electrical contacts 370, 380 protrude.
  • the connecting lines 301 have to compensate for relative movements between the capacitor 300 and the other setting tool 10 each have a discharge and / or expansion loop, not shown.
  • a further damping element is arranged on the capacitor, for example on its end facing away from the receptacle end face.
  • the capacitor is then clamped between two damping elements, that is, the damping elements are applied to the capacitor with a bias voltage.
  • the connecting lines have a rigidity which decreases continuously with increasing distance from the capacitor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP18176186.7A 2018-06-06 2018-06-06 Appareil de pose Withdrawn EP3578305A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP18176186.7A EP3578305A1 (fr) 2018-06-06 2018-06-06 Appareil de pose
EP19726707.3A EP3801996A1 (fr) 2018-06-06 2019-05-29 Appareil de pose
PCT/EP2019/063951 WO2019233849A1 (fr) 2018-06-06 2019-05-29 Appareil de pose
JP2020567824A JP2021525178A (ja) 2018-06-06 2019-05-29 固定工具
AU2019283302A AU2019283302A1 (en) 2018-06-06 2019-05-29 Fastener driving tool
US17/051,660 US11667022B2 (en) 2018-06-06 2019-05-29 Fastener driving tool
TW108119410A TWI844546B (zh) 2018-06-06 2019-06-05 安裝設備

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18176186.7A EP3578305A1 (fr) 2018-06-06 2018-06-06 Appareil de pose

Publications (1)

Publication Number Publication Date
EP3578305A1 true EP3578305A1 (fr) 2019-12-11

Family

ID=62567408

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18176186.7A Withdrawn EP3578305A1 (fr) 2018-06-06 2018-06-06 Appareil de pose
EP19726707.3A Pending EP3801996A1 (fr) 2018-06-06 2019-05-29 Appareil de pose

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19726707.3A Pending EP3801996A1 (fr) 2018-06-06 2019-05-29 Appareil de pose

Country Status (5)

Country Link
US (1) US11667022B2 (fr)
EP (2) EP3578305A1 (fr)
JP (1) JP2021525178A (fr)
AU (1) AU2019283302A1 (fr)
WO (1) WO2019233849A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3578305A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578316A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578308A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
WO2023285307A1 (fr) 2021-07-10 2023-01-19 Rhefor Gbr Outil de pose

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EP3578308A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578311A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578313A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578316A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578305A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578315A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de fixation
EP3578307A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578312A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578309A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
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US20030183670A1 (en) * 2000-08-25 2003-10-02 Barber John P. Impact device
US6830173B2 (en) 2000-08-25 2004-12-14 Senco Products, Inc. Impact device
EP1197300A2 (fr) * 2000-10-10 2002-04-17 Illinois Tool Works Inc. Suspension pour un moteur de ventilateur à noyau de fer pour un outil entraíné par gaz de combustion
US20100213232A1 (en) * 2009-02-20 2010-08-26 Credo Technology Corporation Nailer with brushless dc motor

Also Published As

Publication number Publication date
JP2021525178A (ja) 2021-09-24
US11667022B2 (en) 2023-06-06
TW202000392A (zh) 2020-01-01
EP3801996A1 (fr) 2021-04-14
US20210237243A1 (en) 2021-08-05
WO2019233849A1 (fr) 2019-12-12
AU2019283302A1 (en) 2020-11-26

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