EP1422029B1 - Assemblage de mécanisme de percussion decouplé de vibration - Google Patents

Assemblage de mécanisme de percussion decouplé de vibration Download PDF

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Publication number
EP1422029B1
EP1422029B1 EP03104220A EP03104220A EP1422029B1 EP 1422029 B1 EP1422029 B1 EP 1422029B1 EP 03104220 A EP03104220 A EP 03104220A EP 03104220 A EP03104220 A EP 03104220A EP 1422029 B1 EP1422029 B1 EP 1422029B1
Authority
EP
European Patent Office
Prior art keywords
mechanism assembly
percussion mechanism
housing
articulated arms
axial direction
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.)
Expired - Lifetime
Application number
EP03104220A
Other languages
German (de)
English (en)
Other versions
EP1422029A1 (fr
Inventor
Christian Daubner
Hubert Daxenberger
Erwin Manschitz
Ralf Neuhäuser
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 EP1422029A1 publication Critical patent/EP1422029A1/fr
Application granted granted Critical
Publication of EP1422029B1 publication Critical patent/EP1422029B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to an axially impacting power tool with a housing with respect to a vibration-decoupled axially Schlagtechniksbauou, in particular a hand-held chisel hammer, as from DE 201 09 122 U1 known and described in the preamble of claim 1.
  • EP837756 is in an axially striking hand tool a Schlagwerksbauffle against the housing exclusively biased by a parallelogram joint of leaf springs out.
  • the leaf springs which are necessary for limiting the axial position of the impact mechanism subassembly in the case of different spatial working orientations in space transmit strong vibration excitations to different points of the housing, whereby disturbing additional transverse vibration moments are induced.
  • WO 02/083369 A1 describes another hand tool with two parallel leaf springs.
  • US5025870 has an axially striking hand tool with an axially vibration-decoupled housing a parallelogram of two axially spaced, axially limited in plain bearings mosschwenkbaren articulated arms and an obliquely biased against a center of oscillation in the housing coil pressure spring, whereby transverse vibration moments are avoided. Due to the usual high level of dust in punching machine tools slide bearings have a high wear.
  • the object of the invention is to realize a low-wear vibration-decoupled striking mechanism assembly of an axially striking hand tool.
  • an at least partially axially impacting hand tool with a percussion unit has a spring biased against exactly one point in the housing for vibration isolation and, consisting of at least two axially spaced and axially limited movable articulated existing Axial arrangementskar for supporting the percussion unit, the articulated arms deformable limp trained and connected without sliding movement both with the housing and with the percussion unit.
  • At least one articulated arm on a rigid center portion and two end-side, elastically deformable foil joints which at the same time a rigid training in the transverse directions is achieved in a pliable training in the direction of vibration, which firmly lead the percussion mechanism in this regard.
  • two axially spaced articulated arms are oriented parallel to each other, whereby a tension-free parallelogram is formed.
  • the middle section has additional stiffeners, whereby in particular acoustically disturbing parasitic bending modes and torsional vibrations along the articulated arm are prevented.
  • At least two articulated arms are oriented in opposite directions with respect to their radial extension, whereby at least one articulated arm is loaded by the weight of Schlagtechniksbau devise along its radial extent and relieves the other articulated arm, whereby stability problems are reliably avoided by buckling along the articulated arm at different spatial orientations.
  • the spring is designed as a spiral compression spring, whereby a low-damping and space-saving spring with a suitable spring constant can be realized.
  • an axially striking hand tool 1 in the form of a chisel hammer with a percussion unit 2 has a prestressed against exactly one point P in the housing 3 spring 4 in the form of a helical compression spring and from exactly two axially spaced and axially limited movable articulated arms 5a, 5b existing , Axial Adjustskar for storage of the percussion unit 2 on.
  • the mutually parallel and with respect to their radial extent in opposite directions articulated arms 5a, 5b made of steel are formed axially slippery deformable.
  • the grip-side articulated arm 5a has a rigid center section with additional stiffeners 6 and two end-side, flat, elastically deformable foil joints 7.
  • the articulated arms 5a, 5b are connected both to the housing 3 via axially projecting fastening domes 8a, 8b and directly to the striking mechanism assembly 2, which consists of an electric motor 9, a gear 10 and a pneumatic impact mechanism 11, without sliding movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Surgical Instruments (AREA)
  • Drilling And Boring (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Mechanical Operated Clutches (AREA)

Claims (5)

  1. Sous-ensemble de mécanisme de percussion d'une machine-outil manuelle (1) à percussion au moins partiellement axiale, dans lequel la transmission des vibrations par rapport à un point de contact précis (P) dans le boîtier (3) est empêchée par l'intermédiaire d'un ressort (4), et lequel sous-ensemble est supporté par l'intermédiaire de moyens de guidage axial constitués d'au moins deux bras articulés (5a, 5b), axialement espacés et pouvant se déplacer axialement de manière limitée, caractérisé en ce que les bras articulés (5a, 5b) sont formés de manière à pouvoir se déformer en flexion et sont reliés au boîtier (3) sans aucun mouvement de glissement, dans lequel au moins un bras articulé (5a) a une partie centrale résistante à la flexion et deux articulations d'extrémité en feuille (7), élastiquement déformables.
  2. Sous-ensemble de mécanisme de percussion selon la revendication 1, caractérisé en ce que les deux bras articulés axialement espacés (5a, 5b) sont respectivement orientés parallèlement l'un à l'autre.
  3. Sous-ensemble de mécanisme de percussion selon la revendication 1, caractérisé en ce que la partie centrale comporte des renforcements supplémentaires (6).
  4. Sous-ensemble de mécanisme de percussion selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins deux bras articulés (5a, 5b) sont orientés dans une direction opposée par rapport à leur extension radiale.
  5. Sous-ensemble de mécanisme de percussion selon l'une quelconque des revendications précédentes, caractérisé en ce que le ressort (4) à la forme d'un ressort de compression hélicoïdal.
EP03104220A 2002-11-22 2003-11-17 Assemblage de mécanisme de percussion decouplé de vibration Expired - Lifetime EP1422029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10255162A DE10255162A1 (de) 2002-11-22 2002-11-22 Vibrationsentkoppelte Schlagwerksbaugruppe
DE10255162 2002-11-22

Publications (2)

Publication Number Publication Date
EP1422029A1 EP1422029A1 (fr) 2004-05-26
EP1422029B1 true EP1422029B1 (fr) 2010-11-17

Family

ID=32185954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104220A Expired - Lifetime EP1422029B1 (fr) 2002-11-22 2003-11-17 Assemblage de mécanisme de percussion decouplé de vibration

Country Status (7)

Country Link
US (1) US6962211B2 (fr)
EP (1) EP1422029B1 (fr)
JP (1) JP4344223B2 (fr)
CN (1) CN100335239C (fr)
AT (1) ATE488332T1 (fr)
DE (2) DE10255162A1 (fr)
PL (1) PL363594A1 (fr)

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DE10357758A1 (de) * 2003-12-10 2005-07-21 Wacker Construction Equipment Ag Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung
US7604071B2 (en) * 2004-04-30 2009-10-20 Makita Corporation Power tool with vibration reducing means
SE528471C2 (sv) * 2004-07-05 2006-11-21 Atlas Copco Constr Tools Ab Vibrationsdämpat slående verktyg med tryckluftmatningsorgan
SE528469C2 (sv) 2004-07-05 2006-11-21 Atlas Copco Constr Tools Ab Slående verktyg med en rörligt upphängd slagmekanism
EP1669165A1 (fr) * 2004-12-07 2006-06-14 BLACK & DECKER INC. Outil électrique avec vibrations atténuées
EP1674213B1 (fr) * 2004-12-23 2008-10-01 BLACK & DECKER INC. Outil motorisé avec un dispositif de refroidissement
DE602005007166D1 (de) * 2004-12-23 2008-07-10 Black & Decker Inc Kraftwerkzeuggehäuse
GB0428210D0 (en) * 2004-12-23 2005-01-26 Black & Decker Inc Mode change mechanism
EP1674214B1 (fr) * 2004-12-23 2008-05-28 BLACK & DECKER INC. Boitier pour outil à main motorisé
EP1674211A1 (fr) * 2004-12-23 2006-06-28 BLACK & DECKER INC. Carter pour un outil motorisé
GB2429675A (en) 2005-06-23 2007-03-07 Black & Decker Inc Vibration dampening mechanism
DE102005047353A1 (de) * 2005-10-04 2007-04-05 Robert Bosch Gmbh Elektrowerkzeugmaschine
JP5041575B2 (ja) * 2006-03-07 2012-10-03 日立工機株式会社 打撃工具
AU2007223472B2 (en) 2006-03-07 2010-04-01 Hitachi Koki Co., Ltd. Electrical power tool
DE102006000253A1 (de) * 2006-05-30 2007-12-06 Hilti Ag Schlagende Handwerkzeugmaschine mit axial beweglich gelagertem Schlagwerk
EP1862268B1 (fr) * 2006-05-31 2012-05-02 Ingersoll-Rand Company Support structurel de logement d'outils de type piston
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
JP4756474B2 (ja) * 2006-07-20 2011-08-24 日立工機株式会社 電動工具
JP4756473B2 (ja) * 2006-07-20 2011-08-24 日立工機株式会社 電動工具
DE102006059348A1 (de) * 2006-12-15 2008-07-03 Robert Bosch Gmbh Handwerkzeugmaschine mit schwingungsentkoppeltem Handgriff
DE102007000093A1 (de) * 2007-02-15 2008-08-21 Hilti Ag Handwerkzeuggerät
CN100475455C (zh) * 2007-06-22 2009-04-08 浙江大学 具有减振的电锤工具手柄
DE102007042721A1 (de) * 2007-09-07 2009-03-12 Robert Bosch Gmbh Handwerkzeugmaschine mit einem durch ein Ausgleichsmittel schwingungsgedämpften Handgriff
DE102007055792A1 (de) * 2007-12-13 2009-06-18 Hilti Aktiengesellschaft Elektrohandwerkzeugmaschine mit Schwingungsausgleicher
GB0801304D0 (en) * 2008-01-24 2008-03-05 Black & Decker Inc Hammer drill
DE102009014970A1 (de) * 2009-03-18 2010-09-23 C. & E. Fein Gmbh Oszillationswerkzeug mit Vibrationsdämpfung
JP5361504B2 (ja) * 2009-04-10 2013-12-04 株式会社マキタ 打撃工具
JP5382431B2 (ja) * 2009-05-29 2014-01-08 日立工機株式会社 電動工具
DE202010017883U1 (de) * 2010-12-21 2013-02-08 Robert Bosch Gmbh Handwerkzeugmaschine
DE102011122938B3 (de) * 2011-12-19 2016-01-28 Festo Ag & Co. Kg Setzgerät
US8966773B2 (en) 2012-07-06 2015-03-03 Techtronic Power Tools Technology Limited Power tool including an anti-vibration handle
TWI453098B (zh) * 2013-05-24 2014-09-21 Rexon Ind Corp Ltd 具有減震裝置的電動錘
EP2848370A1 (fr) * 2013-09-12 2015-03-18 HILTI Aktiengesellschaft Machine-outil manuelle
JP6258093B2 (ja) 2014-03-24 2018-01-10 株式会社マキタ 打撃工具
EP3028821A1 (fr) * 2014-12-03 2016-06-08 HILTI Aktiengesellschaft Procédé de contrôle pour une machine-outils portative
US10576594B2 (en) 2017-03-29 2020-03-03 Michael Paul Hill Center point drill and center point drill attachment
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
EP3501750A1 (fr) * 2017-12-19 2019-06-26 Hilti Aktiengesellschaft Machine-outil portative à vibrations amorties
CN214723936U (zh) 2018-01-26 2021-11-16 米沃奇电动工具公司 冲击工具
US11845168B2 (en) * 2019-11-01 2023-12-19 Makita Corporation Reciprocating tool
US20230027574A1 (en) * 2021-07-26 2023-01-26 Makita Corporation Striking tool

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US3824417A (en) * 1973-03-19 1974-07-16 Black & Decker Mfg Co Handle mounting construction for electric paving breaker
JPS54127080A (en) * 1978-03-25 1979-10-02 Makoto Nandate Vibration isolation device in handle of machine in which vibration is formed
DE2820125A1 (de) 1978-05-09 1979-11-22 Bosch Gmbh Robert Handwerkzeugmaschine
DE3122979A1 (de) * 1981-06-10 1983-01-05 Hilti AG, 9494 Schaan Bohr- oder meisselhammer
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DE3521808A1 (de) * 1985-06-19 1987-01-02 Hilti Ag Schwingungen erzeugendes handwerkzeug
DE3839207A1 (de) 1988-11-19 1990-05-23 Hilti Ag Tragbares handgeraet mit schlagwerk
SE9502592L (sv) 1995-07-13 1996-10-14 Berema Atlas Copco Ab Avvibrerat maskindrivet verktyg med bladfjäder upphängd vaggartad upphängningsanordning
US5769174A (en) * 1996-12-18 1998-06-23 Ingersoll-Rand Company Parallel displacement single axis vibration isolator
DE19710251C1 (de) * 1997-03-12 1998-11-12 Gabo Systemtech Gmbh Aus zwei Halbschalen bestehendes Reparaturstück
JP4157382B2 (ja) 2001-04-11 2008-10-01 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 振動減衰式のハンドグリップを備えた手持ち工作機械
DE20109122U1 (de) 2001-05-31 2001-08-02 Wacker-Werke GmbH & Co KG, 80809 München Motorisch angetriebener Hammer mit einer gegen das Hammergehäuse abgefederten Schutzhaube

Also Published As

Publication number Publication date
DE10255162A1 (de) 2004-06-03
JP2004174707A (ja) 2004-06-24
CN100335239C (zh) 2007-09-05
US20040154813A1 (en) 2004-08-12
ATE488332T1 (de) 2010-12-15
PL363594A1 (en) 2004-05-31
EP1422029A1 (fr) 2004-05-26
JP4344223B2 (ja) 2009-10-14
DE50313264D1 (de) 2010-12-30
CN1502451A (zh) 2004-06-09
US6962211B2 (en) 2005-11-08

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