WO2019233856A1 - Setzgerät - Google Patents
Setzgerät Download PDFInfo
- Publication number
- WO2019233856A1 WO2019233856A1 PCT/EP2019/063971 EP2019063971W WO2019233856A1 WO 2019233856 A1 WO2019233856 A1 WO 2019233856A1 EP 2019063971 W EP2019063971 W EP 2019063971W WO 2019233856 A1 WO2019233856 A1 WO 2019233856A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- capacitor
- setting
- axis
- setting tool
- drive
- Prior art date
Links
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.
- a setting device with a drive for a driving element is known.
- 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 a recorded in the recording fastener along a setting axis in to convey the ground, a drive which is intended to drive the driving element along the setting axis on the fastening element, wherein the drive comprises an electrical capacitor having two electrodes, which in each case wound on a winding axis Carrier film are arranged, wherein an expansion of the capacitor in the direction of the winding axis is at most 1.4 times as large as an extension, preferably a diameter of the capacitor perpendicular to the winding axis.
- the expansion of the capacitor in the direction of the winding axis is preferably at most 1.2 times as large, particularly preferably at most as great as the extent of the capacitor perpendicular to the winding 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.
- An advantageous embodiment is characterized in that the carrier films consist essentially of plastic.
- Electrodes are each applied to the carrier film, in particular vapor-deposited.
- the electrodes each have a sheet resistance of at least 10 ohms / n and at most 100 ohms / p.
- the electrodes each have a sheet resistance of at least at least 30 ohms / p and / or at most 60 ohms / p.
- An advantageous embodiment is characterized in that the winding axis is oriented parallel to the setting axis. Preferably, the winding axis coincides with the setting axis.
- the drive comprises at least one electrical line leading away from the capacitor, which at one of the receiving end facing the capacitor electrically with an electrode of the Condenser is connected.
- the electrical line is preferably soldered, welded or screwed to the electrode.
- An advantageous embodiment is characterized in that the capacitor has an internal resistance of less than 8 mOhm.
- the capacitor preferably has an internal resistance of less than 6 mOhm, particularly preferably less than 4 mOhm.
- An advantageous embodiment is characterized in that the capacitor is intended to be electrically charged with a charging voltage between 1000 V and 3000 V.
- An advantageous embodiment is characterized in that the drive has a arranged on the driving element squirrel cage and an excitation coil, which is flowed through during a discharge of the capacitor with current and generates a magnetic field which accelerates the driving element to the fastener.
- Fig. 1 is a setting tool in a longitudinal section.
- a hand-held setting tool 10 for driving fasteners in a substrate, not shown.
- the setting tool 10 has a receptacle 20 designed as a bolt 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. 1 to the left).
- the setting device 10 For a supply of fastening elements to the receptacle, 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 comprises a piston plate 70 and a piston rod 80.
- 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 electrical conductivity of at most 10 6 S / m, so that a magnetic field generated by the exciter coil 100 amplifies from the frame 105 and suppresses eddy currents in the frame 105 become.
- the driving element 60 with the piston plate 70 dips into an unspecified annular depression of the frame 105 in such a way that the squirrel-cage rotor 90 is arranged at a small distance with respect to the exciter coil 100.
- an exciter magnetic field which is generated by a change in an electrical exciter current flowing through the excitation coil, passes through the squirrel cage rotor 90 and in turn induces an annular secondary electric current in the squirrel cage rotor 90.
- 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 1 10, in which the drive is accommodated, a handle 120 with a formed as a trigger actuator 130, designed as a battery electric energy storage 140, a control unit 150, a trigger switch 160, a pressure switch 170, as on the frame 105 arranged temperature sensor 180 formed means for detecting a temperature of the exciting 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 or 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.
- an unspecified contact element actuates the contact pressure switch 170, which thereby transmits a contact signal to the control unit 150 by means of the connecting line 171.
- the control unit 150 initiates a capacitor charging process in which electrical energy is conducted from the electrical energy storage 140 to the control unit 150 via the connection line 141 and from the control unit 150 to the condenser 300 via the connection lines 301 in order 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 setting tool 10 When the capacitor 300 is charged and the driving member 60 is in its set ready position shown in Fig. 1, the setting tool 10 is in a ready to be placed state. Characterized in that the charging of the capacitor 300 is effected only by the pressing of the setting device 10 to the ground, a setting process is only possible to increase the safety of bystanders when the setting tool 10 is pressed against the ground. In embodiments not shown, 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. From this, the control unit 150 initiates a capacitor discharging operation in which electrical energy stored in the capacitor 300 is conducted from the capacitor 300 to the exciting coil 100 by means of the switching circuit 200 by discharging the capacitor 300.
- the circuit 200 shown schematically in FIG. 1 for this purpose comprises two discharge lines 210, 220 which connect the capacitor 300 to the exciter 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, such as a holder or a clip.
- 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 fastening element 30 is driven by the driving element 60 into the ground. Excessive kinetic energy of the driving element 60 is absorbed by a braking element 85 made of a resilient and / or damping material, for example rubber, by the driving element 60 with the piston plate 70 against the Brake element 85 is moved and braked by this to a standstill. Thereafter, the driving-in element 60 is returned to the setting position by an unspecified return device.
- a braking element 85 made of a resilient and / or damping material, for example rubber
- 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 film 330 has a film thickness of between 2.5 ⁇ m and 4.8 ⁇ m for a charging voltage of the capacitor 300 of 1500 V, and a film 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 ohms / n.
- 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.
- 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 taken into account.
- 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.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/056,723 US20210187715A1 (en) | 2018-06-06 | 2019-05-29 | Setting tool |
AU2019281998A AU2019281998A1 (en) | 2018-06-06 | 2019-05-29 | Setting tool |
EP19726709.9A EP3801997A1 (de) | 2018-06-06 | 2019-05-29 | Setzgerät |
JP2020567914A JP2021526085A (ja) | 2018-06-06 | 2019-05-29 | 固定工具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18176188.3A EP3578307A1 (de) | 2018-06-06 | 2018-06-06 | Setzgerät |
EP18176188.3 | 2018-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019233856A1 true WO2019233856A1 (de) | 2019-12-12 |
Family
ID=62567410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/063971 WO2019233856A1 (de) | 2018-06-06 | 2019-05-29 | Setzgerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210187715A1 (de) |
EP (2) | EP3578307A1 (de) |
JP (1) | JP2021526085A (de) |
AU (1) | AU2019281998A1 (de) |
TW (1) | TW202000397A (de) |
WO (1) | WO2019233856A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023285307A1 (de) | 2021-07-10 | 2023-01-19 | Rhefor Gbr | Setzgerät |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3578316A1 (de) * | 2018-06-06 | 2019-12-11 | HILTI Aktiengesellschaft | Setzgerät |
EP3578308A1 (de) * | 2018-06-06 | 2019-12-11 | HILTI Aktiengesellschaft | Setzgerät |
EP3578305A1 (de) * | 2018-06-06 | 2019-12-11 | HILTI Aktiengesellschaft | Setzgerät |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030183670A1 (en) * | 2000-08-25 | 2003-10-02 | Barber John P. | Impact device |
EP3287240A1 (de) * | 2015-04-24 | 2018-02-28 | Hitachi Koki Co., Ltd. | Elektrowerkzeug |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6286707A (ja) * | 1985-10-02 | 1987-04-21 | アテシ | 高電圧高エネルギ−密度コンデンサ |
JP4603521B2 (ja) * | 2006-09-07 | 2010-12-22 | 日東工器株式会社 | 電動ドライバ及び電動ドライバ装置 |
-
2018
- 2018-06-06 EP EP18176188.3A patent/EP3578307A1/de not_active Withdrawn
-
2019
- 2019-05-29 WO PCT/EP2019/063971 patent/WO2019233856A1/de unknown
- 2019-05-29 AU AU2019281998A patent/AU2019281998A1/en not_active Abandoned
- 2019-05-29 US US17/056,723 patent/US20210187715A1/en not_active Abandoned
- 2019-05-29 EP EP19726709.9A patent/EP3801997A1/de active Pending
- 2019-05-29 JP JP2020567914A patent/JP2021526085A/ja active Pending
- 2019-06-05 TW TW108119416A patent/TW202000397A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP3287240A1 (de) * | 2015-04-24 | 2018-02-28 | Hitachi Koki Co., Ltd. | Elektrowerkzeug |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023285307A1 (de) | 2021-07-10 | 2023-01-19 | Rhefor Gbr | Setzgerät |
Also Published As
Publication number | Publication date |
---|---|
US20210187715A1 (en) | 2021-06-24 |
EP3801997A1 (de) | 2021-04-14 |
EP3578307A1 (de) | 2019-12-11 |
TW202000397A (zh) | 2020-01-01 |
AU2019281998A1 (en) | 2020-11-26 |
JP2021526085A (ja) | 2021-09-30 |
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