EP2397274A2 - Appareil de fixation de boulons pouvant fonctionner de manière électrique - Google Patents

Appareil de fixation de boulons pouvant fonctionner de manière électrique Download PDF

Info

Publication number
EP2397274A2
EP2397274A2 EP11166691A EP11166691A EP2397274A2 EP 2397274 A2 EP2397274 A2 EP 2397274A2 EP 11166691 A EP11166691 A EP 11166691A EP 11166691 A EP11166691 A EP 11166691A EP 2397274 A2 EP2397274 A2 EP 2397274A2
Authority
EP
European Patent Office
Prior art keywords
bolt setting
bolt
supply device
tool according
power supply
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Withdrawn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
EP11166691A
Other languages
German (de)
English (en)
Other versions
EP2397274A3 (fr
Inventor
Klaus Bertsch
Stefan Mayer
Wolfgang Beck
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
Publication of EP2397274A2 publication Critical patent/EP2397274A2/fr
Publication of EP2397274A3 publication Critical patent/EP2397274A3/fr
Withdrawn legal-status Critical Current

Links

Images

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 an electrically actuable bolt setting device comprising an electric drive motor which is drivable by an electrical power supply device and outputs drive energy to a buffer, which can buffer the drive energy and deliver abruptly in a setting process to set a bolt.
  • the electrically actuable bolt setting device is preferably a hand-held tacker, as described in the German Offenlegungsschriften DE 10 2006 000 517 A1 and DE 10 2006 035 460 A1 is disclosed. That in the German publication DE 10 2006 035 460 A1 disclosed tackler comprises in addition to a trigger switch at least one further switching means for the locking device, via which a locking device is independent of the trigger switch in a release position can be transferred. By this measure, it is possible to transfer a drive spring element independent of an actuation of the trigger switch by transferring the locking device in the release position in its relaxed position, so that they are not fatigued for prolonged disuse.
  • the further switching means may be a time switching means or a main switch, via which the tacker is switched on and off, so that when switching off the tacker on this main switch, the drive spring element is automatically transferred by operating the locking device in the relaxed position.
  • the object of the invention is to increase the safety in the operation of electrically actuated bolt devices on.
  • an electrically actuable bolt setting device which comprises an electric drive motor, which can be driven by an electrical power supply device and delivers drive energy to an intermediate store, which can temporarily store the drive energy and deliver it abruptly during a setting process in order to set a bolt
  • the bolt setting device comprises a safety mechanism by means of which the electric power supply device can be coupled or coupled to the bolt setting device such that the buffer is automatically transferred from a memory state into a defined idle state when the electric power supply device is disconnected from the bolt setting device.
  • the safety mechanism of the cache is then transferred to its defined idle state, if the electrical power is deliberately interrupted by the user or by an error.
  • the transfer of the buffer into the idle state is carried out automatically by the security mechanism according to the invention.
  • a preferred embodiment of the bolt-firing device is characterized in that the electrical power supply device comprises an accumulator.
  • the electrically actuable bolt setting device is preferably operated with a rechargeable battery, which is also referred to as a rechargeable battery.
  • a further preferred embodiment of the bolt setting tool is characterized in that the buffer comprises a drive spring element that can be tensioned by the electric drive motor to store drive energy, and that, when the electrical power supply device is disconnected from the bolt setting device, automatically relaxed so that the cached drive energy is reduced in a controlled manner.
  • the drive spring element can be tensioned, for example, via a threaded spindle and a spindle nut guided against rotation on the threaded spindle. In this case, a rotational movement of the threaded spindle generated by the electric drive motor is converted into a linear movement or translational movement of the spindle nut.
  • gas accumulators and / or flywheels can be used as temporary storage.
  • a further preferred embodiment of the bolt-firing apparatus is characterized in that the safety mechanism comprises a latch, which holds the latch for latching drive energy in its memory state and automatically releases the latch when the electrical power supply is disconnected from the bolt-firing device, so that the latch in its defined idle state is transferred.
  • the pawl can be a conventional pawl of a locking device, as used in known bolt guns. But it can also be an additional latch. It is essential that the pawl is part of the safety mechanism.
  • the pawl is preferably mechanically coupled to the power supply device such that the pawl is automatically moved from a blocking position to a release position when the power supply device is removed or removed.
  • a further preferred embodiment of the bolt setting tool is characterized in that the safety mechanism comprises an electromechanical actuator, which automatically unlocks a locking device, which holds the buffer in its storage state, when the electrical power supply device is disconnected from the bolt setting device.
  • the electromechanical actuator includes, for example, a magnet or an electrically operated wrap spring.
  • a further preferred exemplary embodiment of the bolt setting tool is characterized in that the bolt setting device comprises a coupling and / or braking device in order to reduce the buffered drive energy in a controlled manner when the buffer is transferred from its storage state into its defined idle state.
  • the clutch and / or brake device comprises, for example, a clutch and / or brake pad, which acts on a pinion, or a centrifugal brake or clutch.
  • a braking device and the electric drive motor of the bolt gun can be used as a braking device and the electric drive motor of the bolt gun can be used.
  • a further preferred exemplary embodiment of the bolt-firing apparatus is characterized in that the safety mechanism comprises at least one safety switch that short-circuits phases of the electric drive motor in order to reduce cached drive energy in a controlled manner when the buffer is transferred from its memory state into its defined idle state.
  • the safety mechanism comprises at least one safety switch that short-circuits phases of the electric drive motor in order to reduce cached drive energy in a controlled manner when the buffer is transferred from its memory state into its defined idle state.
  • a further preferred embodiment of the bolt-firing device is characterized in that the safety switch is designed as a self-conducting electronic switch, in particular as a J-Fet. Due to the self-conductive electronic switch, the phases or windings of the electric motor are short-circuited even in the currentless case.
  • the safety switch when transferring the buffer to its idle state without an explicit control by electronics.
  • the safety switch is opened by the electronics only when the bolt-firing device is put into operation and with the electrical power installed in order to allow normal operation of the bolt-firing device.
  • mechanical relays can also be used.
  • a further preferred embodiment of the bolt-firing device is characterized in that the electric drive motor is designed as an electrically commutated electric motor.
  • This is preferably a brushless DC motor, which is also referred to as BLDC (brushless direct current) electric motor.
  • BLDC brushless direct current
  • a further preferred embodiment of the bolt-firing device is characterized in that the electric drive motor comprises three phases and is driven by free-wheeling diodes by a 6-pulse bridge or B6 bridge or 3-phase motor bridge circuit, referred to below as a bridge rectify a voltage generated when breaking down the cached drive power.
  • the bridge comprises six semiconductor elements, each comprising a transistor and a freewheeling diode, which are connected in parallel.
  • the bolt setting device according to the invention is designed, for example, as a hand-held tacking device, as shown in FIGS FIGS. 1 to 4 or 1 to 2 and the corresponding descriptions of the German patents DE 10 2006 000 517 A1 and DE 10 2006 035 460 A1 is disclosed.
  • FIG. 1 Such a bolt gun 1 is shown greatly simplified according to various embodiments of the invention.
  • the bolt setting device 1 comprises a spring as a drive spring element 10 and is therefore also referred to as a spring nailer.
  • the spring 10 is a buffer 8 and is tensioned by an electric drive motor 2, which is controlled by a controller 3.
  • the electric drive motor 2 which is designed as an electric motor, drives a threaded spindle 14 via a belt drive 5.
  • a rotational movement of the threaded spindle 14 is converted into a linear movement of the spindle nut 12.
  • the spring 10 is stretched over the linear movement of the spindle nut 12.
  • the spindle nut 12 locks with a pawl 18 of a locking device 16 and is thereby held in the cocked position, while the spindle nut 12 is driven by the electric motor 2 in the reverse direction back to its original position.
  • the spring 10 is held by the pawl 18 in its cocked position until the user opens the latch 18 by pressing a trigger and thus triggers a bolt setting process. After setting the bolt, the spring 10 is stretched by means of the electric motor 2 again.
  • the spring 10 is thus tensioned by the spindle nut 12 on the threaded spindle 14 performs a reciprocating motion, wherein the electric motor 2 is energized for a certain time in one direction and then back in the opposite direction.
  • the energization of the electric motor is controlled by the electronic control 3, wherein the controller 3 energized the electric motor 2 in one direction until the spindle nut 12 triggers a control signal by reaching the respective end position, for example, when driving over the pawl 18.
  • the control signal is the controller 3 informed that the respective Final position has been reached.
  • the energization of the electric motor 2 can be turned off by the controller 3 and the electric motor 2 are energized in the opposite direction.
  • bolt setting device 1 is used for electrical power supply indicated by a rectangle electrical power supply device 20, which is designed as an accumulator 22, short battery.
  • the battery 22 is coupled via a safety mechanism 25 with the latch 8, that the spring 10 is automatically relaxed when the battery 22 is removed.
  • FIG. 1 three different embodiments indicated how the safety mechanism 25 can be performed.
  • the three embodiments can each be used alone in a bolt setting device 1, but can also be combined with each other as desired.
  • a line 26 is indicated that the pawl 18 of the locking device 16 may be mechanically coupled to the battery 22 so that the pawl 18 is automatically moved from its illustrated blocking position to a release position in which the spring 10 automatically relaxes.
  • the spring 10 drives the electric drive motor 2 when relaxing on the spindle nut 12, the threaded spindle 14 and the belt drive 5.
  • the electric drive motor 2 is embodied as a brushless direct current (BLDC) electric motor, which is also referred to as a brushless DC motor, and comprises a rotor with permanent magnets.
  • BLDC brushless direct current
  • the rotor of the electric motor 2 is rotated.
  • the permanent magnets of the rotor are accelerated, whereby in a stator of the electric motor 2, a voltage is induced. This induction voltage is reduced by the short circuit of phases of the electric motor 2.
  • the short circuiting of the phases is effected by a safety switch 30, which, as indicated by a line 31, is coupled to the battery 22.
  • the safety switch 30 Upon removal of the battery 22, the safety switch 30 is automatically transferred so that the phases of the electric motor 2 are short-circuited.
  • the safety switch 30 When inserting the battery 22, the safety switch 30 is opened again. In FIG. 1 the safety switch 30 is shown in its open position.
  • the safety mechanism 25 may alternatively or additionally comprise a coupling and / or braking device 28, which, as indicated by a line 29, is coupled to the battery 22.
  • the coupling and / or braking device 28 cooperates with a pulley of the belt drive 5.
  • the coupling 29 is designed so that the coupling and / or braking device 28 brakes the threaded spindle 14 via the belt drive 5 when the spring 10 is automatically released after the battery 22 has been removed.
  • the clutch and / or brake device 28 develops no braking action.
  • the coupling and / or braking device 28 is automatically decoupled from the belt drive 5.
  • FIG. 2 is an electric drive motor 40 shown in simplified form in the form of an electrical circuit diagram.
  • the electric drive motor 40 corresponds to the in FIG. 1
  • the electric drive motor 40 is designed as a BLDC (brushless direct current) electric motor, which is also referred to as a brushless DC motor or electrically commutated electric motor.
  • BLDC brushless direct current
  • the brushless DC motor 40 comprises a rotor with permanent magnets and a stator with three windings or phases 41, 42, 43.
  • the windings 41 to 43 are connected via lines 44, 45, 46 to a controller 50.
  • a symbol 48 a grounding sign is indicated.
  • another arrow-shaped symbol 49 is a plus terminal of the accumulator (20 in FIG. 1 ) indicated.
  • the controller 50 is designed as a bridge with six semiconductor elements 51 to 56.
  • Each semiconductor element 51 to 56 comprises a transistor, in particular a field-effect transistor, and a freewheeling diode connected in parallel therewith and in particular integrated in the transistor.
  • the windings 41 to 43 are controlled in dependence on the position of the rotor so that a rotating field is generated.
  • the position of the rotor is detected, for example, by Hall sensors or by sensorless methods.
  • the spring (10 in FIG. 1 ) generated voltage of the electric drive motor 40 used for braking while the generated voltage of the motor is proportional to the speed and is rectified via the freewheeling diodes of the bridge, which is also referred to as a bridge. Since the generated voltage is sufficient even at a comparatively low number of revolutions to supply the electronics, the latter can then cause a braking of the electric drive motor 40 by switching on the lower and / or upper field-effect transistors.
  • FIG. 3 is a similar control 60 as in FIG. 2 represented for the same electric drive motor.
  • the controller 60 includes two additional safety switches 61, 62. Depending on the required braking force, a single safety switch 61, 62 may be sufficient.
  • the safety switch 61 is connected between two connection points of the lines 44 and 45.
  • the safety switch 62 is connected between two connection points of the lines 45, 46.
  • the two safety switches 61, 62 are designed as self-conducting electronic switches, for example as a J-Fet.
  • this self-conductive electronic safety switch 61, 62 is that the safety switches 61, 62 are conductive without an explicit control by an electronic system. This causes the windings (41 to 43 in FIG. 2 ) of the electric drive motor are short-circuited even in the currentless case and are only actively switched off by a corresponding control in normal operation.
  • the electronic safety switches 61, 62 and mechanical relays can be used.
  • the voltage induced by acceleration of the permanent magnets of the rotor voltage can be reduced.
  • the resulting current flow in the phases or windings generates a Magnetic field in the electric drive motor 40, which counteracts the acceleration when relaxing the spring. With this counterforce, the cached drive energy of the spring can be slowly reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP11166691.3A 2010-06-15 2011-05-19 Appareil de fixation de boulons pouvant fonctionner de manière électrique Withdrawn EP2397274A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010030057A DE102010030057A1 (de) 2010-06-15 2010-06-15 Elektrisch betätigbares Bolzensetzgerät

Publications (2)

Publication Number Publication Date
EP2397274A2 true EP2397274A2 (fr) 2011-12-21
EP2397274A3 EP2397274A3 (fr) 2013-10-23

Family

ID=44741150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11166691.3A Withdrawn EP2397274A3 (fr) 2010-06-15 2011-05-19 Appareil de fixation de boulons pouvant fonctionner de manière électrique

Country Status (6)

Country Link
US (1) US20110303720A1 (fr)
EP (1) EP2397274A3 (fr)
JP (1) JP5788720B2 (fr)
CN (1) CN102284933B (fr)
DE (1) DE102010030057A1 (fr)
TW (1) TW201208825A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397272B1 (fr) * 2010-06-15 2018-09-12 HILTI Aktiengesellschaft Dispositif d'enfoncement
US20140001224A1 (en) * 2012-06-28 2014-01-02 Black & Decker Inc. Cordless fastening tool control system
CN108000440B (zh) * 2017-12-04 2024-05-31 北京大风时代科技有限责任公司 打钉设备
JP6479248B1 (ja) * 2018-12-11 2019-03-06 株式会社東日製作所 締付装置
EP3670090A1 (fr) * 2018-12-18 2020-06-24 Hilti Aktiengesellschaft Dispositif, appareil d'entraînement et procédé

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006035460A1 (de) 2006-11-27 2008-05-29 Hilti Ag Handgeführtes Eintreibgerät
DE102006000517A1 (de) 2006-12-12 2008-06-19 Hilti Ag Handgeführtes Eintreibgerät

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610505A (en) * 1969-05-12 1971-10-05 Textron Inc Spring-operated fastener driving device
US3593829A (en) * 1970-04-03 1971-07-20 Collins Radio Co Mechanical stop limit means for lead screw-driven ram
JPH0557634A (ja) * 1991-08-27 1993-03-09 Matsushita Electric Works Ltd 打ち込み工具
CN2123142U (zh) * 1992-06-26 1992-11-25 吴炎喜 斩控式混合变频调速装置
CN2249990Y (zh) * 1995-05-25 1997-03-19 卢诚 非静止式变频无级调速器
JP3853590B2 (ja) * 2000-12-15 2006-12-06 株式会社マキタ 電動工具
EP1805863B1 (fr) * 2004-10-18 2013-06-26 Black & Decker, Inc. Systeme electrique sans fil
US20080017689A1 (en) * 2006-05-31 2008-01-24 David Simonelli Fastener driving device
JP4799045B2 (ja) * 2005-05-17 2011-10-19 株式会社東京精密 工作機械
DE102005000061A1 (de) * 2005-05-18 2006-11-23 Hilti Ag Elektrisch betriebenes Eintreibgerät
DE102005000089B4 (de) * 2005-07-13 2023-02-09 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
DE102005000113B4 (de) * 2005-09-13 2014-03-27 Hilti Aktiengesellschaft Setzgerät
DE102006000025A1 (de) * 2006-01-25 2007-07-26 Hilti Ag Setzgerät
DE102006035370A1 (de) * 2006-10-27 2008-04-30 Hilti Ag Handgeführtes Eintreibgerät
DE102006035459A1 (de) * 2006-11-27 2008-05-29 Hilti Ag Handgeführtes Eintreibgerät
DE102006035304B3 (de) * 2006-12-22 2008-09-04 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
DE102007029741A1 (de) * 2007-06-27 2009-01-08 Robert Bosch Gmbh Wickelkörper für einen Elektromotor und Verfahren zur Herstellung eines Wickelkörpers für einen Elektromotor
DE102007060425A1 (de) * 2007-12-14 2009-06-18 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
DE102008001969A1 (de) * 2008-05-26 2009-12-03 Hilti Aktiengesellschaft Handgeführtes elektrisch betriebenes Eintreibgerät
DE102010030119A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006035460A1 (de) 2006-11-27 2008-05-29 Hilti Ag Handgeführtes Eintreibgerät
DE102006000517A1 (de) 2006-12-12 2008-06-19 Hilti Ag Handgeführtes Eintreibgerät

Also Published As

Publication number Publication date
JP5788720B2 (ja) 2015-10-07
CN102284933B (zh) 2015-07-01
EP2397274A3 (fr) 2013-10-23
TW201208825A (en) 2012-03-01
DE102010030057A1 (de) 2011-12-15
JP2012000750A (ja) 2012-01-05
CN102284933A (zh) 2011-12-21
US20110303720A1 (en) 2011-12-15

Similar Documents

Publication Publication Date Title
EP2397260B1 (fr) Procédé de fonctionnement d'un appareil de fixation de boulons
EP1154555B1 (fr) Système de commutation électronique pour un moteur à courant continu sans balai
EP2994273B1 (fr) Dispositif d'entraînement et procédé d'utilisation d'un dispositif d'enfoncement
EP2397274A2 (fr) Appareil de fixation de boulons pouvant fonctionner de manière électrique
DE102012101508A1 (de) Verfahren und Vorrichtung zum Betreiben einer elektrischen Maschine
DE102008025706A1 (de) Antriebsvorrichtung für einen bürstenlosen Motor
WO2018054672A1 (fr) Dispositif moteur pour une commande d'un commutateur électrique
EP4226065B1 (fr) Ensemble frein de stationnement conçu pour un véhicule et procédé pour faire fonctionner un ensemble frein de stationnement dans un véhicule
EP0732799B1 (fr) Moteur série avec dispositif de freinage
DE102011110929A1 (de) Hand-Werkzeugmaschine mit einer elektrischen Bremseinrichtung
DE102014116689B4 (de) Vorrichtung und Verfahren zum Sichern einer Antriebssteuerung gegen Versorgungsspannungsausfälle
WO2019030031A1 (fr) Dispositif d'enfoncement et procédé pour utiliser un dispositif d'enfoncement
EP4188649A1 (fr) Outil électrique
EP4018542B1 (fr) Unité de commande pour commander un moteur et procédé
WO2009003703A2 (fr) Dispositif de commande pour moteur électrique
EP1870999B1 (fr) Procédé de fonctionnement d'une pompe dotée d'une machine électrique à commutation électronique
DE19951747C1 (de) Schaltung für einen Elektromotor
DE19953265A1 (de) Verfahren zum Anfahren eines Gleichstrommotors
DE102008019910A1 (de) Elektromotor
EP2009312A1 (fr) Actionneur d'embrayage actionné électriquement
DE202022101872U1 (de) Elektromechanischer Schalter für ein netzbetriebenes Bearbeitungsgerät
DE102007043205A1 (de) Verfahren und Anordnung zum elektrischen Bremsen eines Asynchronmotors
DE102014004282A1 (de) Verfahren zum Betreiben eines Antriebssystems und Antriebssystem zur Durchführung eines Verfahrens
DE102010033476A1 (de) Starterkennung für einen sensorlosen Hybridantrieb aus Motor- und Muskel-kraft
DE2824646A1 (de) Schaltung zur schnellbremsung eines elektrischen antriebsmotors

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: B25C 1/06 20060101AFI20130917BHEP

17P Request for examination filed

Effective date: 20140423

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20171201