EP2127816A2 - Dispositif d'enfoncement manuel entraîné de manière électrique - Google Patents

Dispositif d'enfoncement manuel entraîné de manière électrique Download PDF

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Publication number
EP2127816A2
EP2127816A2 EP09159495A EP09159495A EP2127816A2 EP 2127816 A2 EP2127816 A2 EP 2127816A2 EP 09159495 A EP09159495 A EP 09159495A EP 09159495 A EP09159495 A EP 09159495A EP 2127816 A2 EP2127816 A2 EP 2127816A2
Authority
EP
European Patent Office
Prior art keywords
guide
drive
guide member
tacker
workpiece
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Withdrawn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
EP09159495A
Other languages
German (de)
English (en)
Other versions
EP2127816A9 (fr
EP2127816A3 (fr
Inventor
Ulrich Schiestl
Robert Spasov
Karl Franz
Harald Fielitz
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 EP2127816A2 publication Critical patent/EP2127816A2/fr
Publication of EP2127816A3 publication Critical patent/EP2127816A3/fr
Publication of EP2127816A9 publication Critical patent/EP2127816A9/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Withdrawn legal-status Critical Current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
    • 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
    • B25C1/008—Safety devices

Definitions

  • the present invention relates to a hand-held electrically powered tacker of the type mentioned in the preamble of claim 1.
  • Such hand-held tackers have a displaceably guided drive-in ram on the fasteners are driven into a ground.
  • a generic tacker is from the DE 40 13 022 A1 known.
  • This tacker has a percussive blower propelled by a spring towards an orifice for hammering a nail.
  • a guide channel is arranged in the mouth part of the tacker.
  • An adjusting device for transferring the impact device to an initial position has an electric motor and a speed reduction mechanism for this. A rotational movement of the electric motor is transmitted via the speed reduction mechanism and a meshing toothed disc on a hammer body of the impact device to convert this against the force of the spring in the starting position in which the impact device is ready for a beating process.
  • the object of the present invention is therefore to develop a tacker of the aforementioned type, which allows a high setting quality even when designed for high-energy applications.
  • the bolt guide has a first guide part and a second guide part, wherein the second guide part along the axis relative to the first guide member is axially movable and decoupled from the first guide member.
  • the second guide part can thereby remain in abutment against a workpiece during a driving operation due to its inertia and the complete decoupling of the first guide member and thus of the tacker and thus allow optimal guidance of the fastener to be driven to the end of the driving operation, whereby the setting quality also is high at high Einsteinergien.
  • the first guide part is formed integrally with the mouth part, which has a receptacle in which the second guide part is mounted axially displaceable.
  • the second guide part has a stop which can be applied to a counterpart stop arranged on the first guide part, so that the two guide parts form a continuous guide channel when the tacking device is pressed against a workpiece and the second guide part is displaced until it bears against the first guide part ,
  • a driver is arranged on the second guide part, which cooperates in a pressed onto a workpiece position of the mouth part with a Anpress catalystler for actuating the Anpressschalters, whereby the Anpressconnectler no longer must be performed to the mouth, whereby the mouth area the tacker builds smaller.
  • the second guide member is acted upon elastically by a spring element in the direction of its decoupled from the first guide member position, whereby an uncontrolled operation of the Anpressschalters is avoided.
  • the driver is designed as a protruding radially from the second guide part projection which passes through a slot in the mouth portion, wherein the length of the slot simultaneously determines the maximum Ausgurin of the second guide member from the recording out.
  • FIGS. 1 to 2 illustrated tackle 10 has a housing 11 and disposed therein, generally designated 30 drive arrangement for a drive-in ram 13 which is guided in a guide 12 displaceable.
  • the drive-in ram 13 has a drive-in section 14 for a fastening element 60 and a head section 15.
  • a mouth portion 16 closes with a coaxial with the guide 12 extending pin guide 17.
  • a fastener magazine 61 is arranged in the fasteners 60 are stored.
  • the bolt guide 17 defines an axis A and has a first guide part 117 and a second guide part 217, wherein the second guide part 217 relative to the first guide member 117 along the axis A displaceable and in the driving direction 27 of the first guide member 117 can be decoupled.
  • the first guide part 117 of the bolt guide 17 is integrally formed with the mouth part 16, while the second guide part 217 is formed as a guide sleeve, which is mounted axially displaceably in a cylindrical receptacle 18 in the mouth part 16.
  • an axially extending elongated opening or slot 40 is arranged, through which a second guide member 217 radially projecting cam 33 is passed.
  • This driver 33 cooperates in a pressed onto a workpiece W position of the mouth part 16 (see Fig. 2 ) With a Anpressconnectler 34 for actuating a contact pressure switch 29.
  • the second guide member 217 is acted upon by a spring element 35 in the direction of its decoupled from the first guide member 117 elastically.
  • the spring element 35 is z. B.
  • the second guide member 217 has in addition to the driver 33 still a stop 25 which is engageable with a arranged on the first guide member 117 counter stop 26 when the tacker 10, as shown Fig. 2 seen, is pressed against the workpiece W.
  • the two guide parts 117, 217 then form a continuous guide channel for a fastening element 60 to be set and also for the end of the driving ram 13 facing the fastening element 60 or its driving-in section 14.
  • the drive assembly 30 includes in the illustrated embodiment, a drive spring element 31 as a force storage, which is supported with one end to a support point 36 indirectly on the housing 11 and which engages with another end to the head portion 15 of the drive rod 13.
  • a generally designated 50 locking device having a pawl 51 which in a blocking position 54 (see Fig. 1 ) engages a locking surface 53 on a projection 58 of the drive-in ram 13 and holds it against the force of the drive spring element 31.
  • the pawl 51 is mounted on a servomotor 52 and about this in a Fig. 3 apparent release position 55 can be transferred, as will be described below.
  • the servomotor 52 is connected via an electrical first control line 56 to a control unit 23.
  • the tacker 10 further includes a handle 20 on which a trigger switch 19 is arranged to trigger a driving operation with the tacker 10.
  • a handle 20 on which a trigger switch 19 is arranged to trigger a driving operation with the tacker 10.
  • the handle 20 is also still a total designated 21 power supply arranged, via which the tacker 10 is supplied with electrical energy.
  • the power supply 21 includes at least one accumulator.
  • the power supply 21 is connected via electrical supply lines 24 both to the control unit 23 and to the trigger switch 19.
  • the control unit 23 is further connected via a switch line 57 to the trigger switch 19.
  • the already mentioned contact pressure switch 29 is electrically connected to the control unit 23 via a line 28.
  • the pressing switch 29 sends an electric signal to the control unit 23 as soon as the tacker 10 is pressed against a workpiece W, as shown Fig. 2 can be seen, and thus ensures that the tacker 10 can only be triggered when it has been properly pressed against a workpiece W.
  • This tensioning device 70 comprises a motor 71 via which a drive roller 72 can be driven.
  • the motor 71 is electrically connected to the control unit 23 via a second control line 74 and can be put into operation via this, z. B. when the driving ram 13 is in its lying in the driving direction 27 end position or when the tacker is lifted off the workpiece again.
  • the motor 71 has an output means 75, such as a driven wheel, which can be coupled to the drive roller 72.
  • the drive roller 72 is rotatably mounted on a longitudinally adjustable actuating arm 78 of a solenoid 76 designed as a solenoid.
  • the adjusting means 76 is connected via an actuating line 77 to the control unit 23. In operation, the drive roller 72 rotates in the direction of the arrow 73 indicated by dashed lines.
  • the control unit 23 first ensures that the drive-in ram 13 is in its off Fig. 1 apparent starting position 22 is located. If this is not the case, then the drive roller 72 is moved up by the adjusting means 76 to the output means 75, which has already been rotated via the motor 71, and is engaged therewith. At the same time, the drive roller 72 engages the drive-in ram 13 so that it is offset in the direction of the drive arrangement 30 via the drive roller 72 rotating in the direction of the arrow 73. In this case, the drive spring element 31 of the drive assembly 30 is tensioned.
  • the motor 71 can then be turned off via the control unit 23 and the actuating means 76 moves the Drive roller 72, also controlled by the control unit 23, from its engaged position on the output means 75 and the drive tappet 13 in its disengaged position (see. Fig. 2 ).
  • the control unit 23 is first set in Setzrschaft on the Anpressschalter 29.
  • the second guide member 217 is displaced against the force of the spring element 35 into the receptacle until the stop 25 of the second Guide member 217 comes into abutment with the counter-stop 26 on the first guide member 117.
  • the driver 33 displaces the Anpress catalyst 34 a bit far in the direction of the housing 11, so that via the second end of the Anpress catalysts 34 of the pressing switch 29 is actuated.
  • the trigger switch 19 is operated by an operator (see Fig. 3 ), then the locking device 50 is placed in its release position 55 via the control unit 23, wherein the pawl 51 is lifted by the servo motor 52 from the blocking surface 53 on the drive tappet 13.
  • the pawl 51 may be spring-loaded in the direction of the driving ram 13.
  • the driving ram 13 is then moved over the drive spring element 31 of the drive assembly 30 in the driving direction 27, wherein a fastener 60 is driven into the workpiece W. Due to the recoil of the tacker 10, the tacker 10 is displaced away from the workpiece W counter to the driving direction.
  • the second guide part 217 decouples from the first guide part 117, which is moved with the tacker 10 counter to the drive-in direction 27.
  • the second guide member 217 also decoupled from the pressure switch 29 by the Anpresspitler 34 lifts off with its second end 39 from the contact pressure switch 29 or by the first end 38 of the Anpress catalysts 34 lifts off the driver 33.
  • the second guide part 217 thus remains due to its inertia and the complete decoupling in contact with the workpiece W, as from Fig. 3 can be seen, and thus allows optimal guidance of the Händen fastener 60 until the end of the driving operation.
  • the tensioning device 70 is activated via the control unit 23 when the tacker 10 is lifted off the workpiece W again.
  • the contact pressure switch 29 supplies a signal to the control unit 23.
  • About the tensioning device 70 of the drive tappet 13 is driven in the manner already described against the drive spring element 31 of the drive assembly 30 and the drive spring member 31 while re-tensioned until the pawl 51 back into its blocking position 54th can occur on the locking surface 53 on the drive tappet 13.
  • the electrically operated tacking device according to the invention could also have a flywheel drive or a solenoid drive fed by an electric motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP09159495A 2008-05-26 2009-05-06 Dispositif d'enfoncement manuel entraîné de manière électrique Withdrawn EP2127816A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008001969A DE102008001969A1 (de) 2008-05-26 2008-05-26 Handgeführtes elektrisch betriebenes Eintreibgerät

Publications (3)

Publication Number Publication Date
EP2127816A2 true EP2127816A2 (fr) 2009-12-02
EP2127816A3 EP2127816A3 (fr) 2010-07-28
EP2127816A9 EP2127816A9 (fr) 2011-02-09

Family

ID=40984691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09159495A Withdrawn EP2127816A3 (fr) 2008-05-26 2009-05-06 Dispositif d'enfoncement manuel entraîné de manière électrique

Country Status (5)

Country Link
US (1) US20090289094A1 (fr)
EP (1) EP2127816A3 (fr)
JP (1) JP2009285826A (fr)
CN (1) CN101590638A (fr)
DE (1) DE102008001969A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2960810A1 (fr) * 2010-06-08 2011-12-09 Prospection & Inventions Guide-tampon pour appareil de fixation de clous et appareil comportant le guide-tampon
TWI581924B (zh) * 2011-05-11 2017-05-11 Max Co Ltd Beating tool
EP4368348A1 (fr) * 2022-11-02 2024-05-15 Basso Industry Corp. Pistolet à clouer électrique

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5201402B2 (ja) * 2008-08-06 2013-06-05 日立工機株式会社 打込機
DE102010030080A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102010030120A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
EP2397272B1 (fr) * 2010-06-15 2018-09-12 HILTI Aktiengesellschaft Dispositif d'enfoncement
DE102010030065A1 (de) 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102010030098A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102010030118A1 (de) 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102010030057A1 (de) * 2010-06-15 2011-12-15 Hilti Aktiengesellschaft Elektrisch betätigbares Bolzensetzgerät
DE102011007703A1 (de) * 2011-04-19 2012-10-25 Hilti Aktiengesellschaft Eintreibgerät
DE102011089860A1 (de) * 2011-12-23 2013-06-27 Hilti Aktiengesellschaft Eintreibvorrichtung
DE102012215126A1 (de) * 2012-08-24 2014-05-28 Hilti Aktiengesellschaft Handgeführtes Arbeitsgerät
DE102014206076A1 (de) * 2014-03-31 2015-10-01 Robert Bosch Gmbh Handwerkzeugmaschine, Verfahren zum Betreiben
CN105125276B (zh) * 2015-09-24 2017-08-11 北京市富乐科技开发有限公司 一种骨折内固定电动射钉枪
JP6928457B2 (ja) * 2017-02-17 2021-09-01 株式会社マキタ 打込み工具
JP2019072815A (ja) * 2017-10-17 2019-05-16 株式会社マキタ 打込み工具
CN110757413B (zh) * 2018-07-26 2022-08-26 创科无线普通合伙 气动工具
EP3670090A1 (fr) * 2018-12-18 2020-06-24 Hilti Aktiengesellschaft Dispositif, appareil d'entraînement et procédé
JP7388830B2 (ja) * 2019-06-17 2023-11-29 株式会社マキタ 打込み工具
CN110281325B (zh) * 2019-07-22 2021-05-11 张超仪 一种薄木板拼接打钉器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013022A1 (de) 1989-04-24 1990-11-08 Makita Electric Works Ltd Elektrisch betriebener nagler

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434026A (en) * 1966-12-12 1969-03-18 Fastener Corp Electrically operated reciprocating tool
US4298072A (en) * 1979-08-31 1981-11-03 Senco Products, Inc. Control arrangement for electro-mechanical tool
US4778094A (en) * 1987-10-02 1988-10-18 The Dimpling Nailing Gun Company Nail and dimpler driving apparatus for nailing gun
US5004140A (en) * 1989-04-24 1991-04-02 Makita Electric Works, Ltd. Electrically-operated tacker
US5269451A (en) * 1990-09-14 1993-12-14 Max Co., Ltd. Electric stapler with unmovably fixed magazine
US5666715A (en) * 1995-07-05 1997-09-16 Harris Corporation Electrically operated impact tool gun
US7314718B1 (en) * 2001-04-03 2008-01-01 Bioarray Solutions Ltd. Method and apparatus for maintaining multiple planar fluid flows
US20040132166A1 (en) * 2001-04-10 2004-07-08 Bioprocessors Corp. Determination and/or control of reactor environmental conditions
EP1392814B1 (fr) * 2001-04-25 2007-06-13 Cornell Research Foundation, Inc. Dispositifs et procedes pour systeme de culture cellulaire pharmacocinetique
US6474125B1 (en) * 2001-05-18 2002-11-05 Valiant Corporation Hemming machine with dual ball screw drive
US6364193B1 (en) * 2001-05-29 2002-04-02 Acumen Power Tools Corp. Electric nailing tool
AU2003205241A1 (en) * 2002-01-22 2003-09-02 The Penn State Research Foundation Drug candidate screening systems based on micropatterned hydrogels and microfluidic systems
US6742691B2 (en) * 2002-08-23 2004-06-01 Mu-Yu Chen Nail stapler
US6779697B2 (en) * 2002-08-26 2004-08-24 Wang-Kuan Lin Pneumatic nailer with rotatable and movable magazine
US6761299B2 (en) * 2002-09-18 2004-07-13 Illinois Tool Works Inc. Magazine clutch assembly
US6796477B2 (en) * 2002-10-30 2004-09-28 Aplus Pneumatic Corp. Nail-hammering apparatus
TWM243329U (en) * 2003-03-31 2004-09-11 Besco Pneumatic Corp Improved structure of palm-held hammer
JP4207700B2 (ja) * 2003-07-18 2009-01-14 マックス株式会社 釘打機における打込みガイド機構
FR2857896B1 (fr) * 2003-07-23 2007-04-27 Prospection & Inventions Appareil d'entrainement d'elements de fixation a sabot de securite
WO2005033263A1 (fr) * 2003-10-01 2005-04-14 Athena Capital Partners, Llc Dispositif de flux de circulation pour analyses biologiques de cultures cellulaires, constituants cellulaires et produits cellulaires
US6857549B1 (en) * 2003-11-21 2005-02-22 Navtor Technology Corporation Nail driving gun with a shock-absorbing member
US7971768B2 (en) * 2004-05-04 2011-07-05 Illinois Tool Works Inc. Guidance system for fasteners
JP2005322466A (ja) * 2004-05-07 2005-11-17 Tokai Rika Co Ltd 揺動スイッチ装置
US20060016973A1 (en) * 2004-07-21 2006-01-26 Advanced Semiconductor Engineering, Inc. Multi-chip image sensor package module
US20080233607A1 (en) * 2004-11-11 2008-09-25 Hanry Yu Cell Culture Device
DE102005000089B4 (de) * 2005-07-13 2023-02-09 Hilti Aktiengesellschaft Handgeführtes Eintreibgerät
KR20070077320A (ko) * 2006-01-23 2007-07-26 삼성전자주식회사 세포 배양을 실시간으로 모니터링 가능한 세포 배양 칩 및그를 이용한 세포 배양 모니터링 방법
DE102006000139B3 (de) * 2006-03-28 2007-10-18 Hilti Ag Handgeführtes Eintreibgerät
DE102006000202A1 (de) * 2006-04-27 2007-11-08 Hilti Ag Handgeführtes Eintreibgerät
DE102006035459A1 (de) * 2006-11-27 2008-05-29 Hilti Ag Handgeführtes Eintreibgerät
KR20090030084A (ko) * 2007-09-19 2009-03-24 삼성전자주식회사 미세유동장치

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013022A1 (de) 1989-04-24 1990-11-08 Makita Electric Works Ltd Elektrisch betriebener nagler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2960810A1 (fr) * 2010-06-08 2011-12-09 Prospection & Inventions Guide-tampon pour appareil de fixation de clous et appareil comportant le guide-tampon
EP2402120A1 (fr) * 2010-06-08 2012-01-04 Société de Prospection et d'Inventions Techniques -SPIT Guide-tampon pour appareil de fixation de clous et appareil comportant le guide-tampon
US9073194B2 (en) 2010-06-08 2015-07-07 Societe De Prospection Et D'inventions Techniques Spit Plug guide for a nailing device and a device comprising the plug guide
TWI548495B (zh) * 2010-06-08 2016-09-11 索西特未來發明科技公司 上釘裝置之一插塞導引及包含該插塞導引之裝置
TWI581924B (zh) * 2011-05-11 2017-05-11 Max Co Ltd Beating tool
EP4368348A1 (fr) * 2022-11-02 2024-05-15 Basso Industry Corp. Pistolet à clouer électrique

Also Published As

Publication number Publication date
JP2009285826A (ja) 2009-12-10
DE102008001969A1 (de) 2009-12-03
CN101590638A (zh) 2009-12-02
EP2127816A9 (fr) 2011-02-09
EP2127816A3 (fr) 2010-07-28
US20090289094A1 (en) 2009-11-26

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