EP1952950B1 - Outil électroportatif amortisseur d'oscillations - Google Patents

Outil électroportatif amortisseur d'oscillations Download PDF

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Publication number
EP1952950B1
EP1952950B1 EP08100787.4A EP08100787A EP1952950B1 EP 1952950 B1 EP1952950 B1 EP 1952950B1 EP 08100787 A EP08100787 A EP 08100787A EP 1952950 B1 EP1952950 B1 EP 1952950B1
Authority
EP
European Patent Office
Prior art keywords
power tool
energisation
vibration absorber
spring
hand
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.)
Active
Application number
EP08100787.4A
Other languages
German (de)
English (en)
Other versions
EP1952950A3 (fr
EP1952950A2 (fr
Inventor
Franz Mössnang
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 EP1952950A2 publication Critical patent/EP1952950A2/fr
Publication of EP1952950A3 publication Critical patent/EP1952950A3/fr
Application granted granted Critical
Publication of EP1952950B1 publication Critical patent/EP1952950B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24Damping the reaction force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/06Hammer pistons; Anvils ; Guide-sleeves for pistons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2211/00Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06Means for driving the impulse member
    • B25D2211/068Crank-actuated impulse-driving mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2217/00Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011Details of anvils, guide-sleeves or pistons
    • B25D2217/0019Guide-sleeves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2217/00Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0073Arrangements for damping of the reaction force
    • B25D2217/0076Arrangements for damping of the reaction force by use of counterweights
    • B25D2217/0092Arrangements for damping of the reaction force by use of counterweights being spring-mounted

Definitions

  • the invention relates to a hand tool according to the preamble of claim 1, in particular a hammer drill, combi hammer or chisel hammer, with an active vibration absorber.
  • Such a hand tool is from the EP 1 464 449 A known.
  • a vibration damper is a vibratory subsystem, which consists of an abstract vibratable mass, an abstract spring and an abstract damper, which must not be explicitly designed as a concrete component.
  • the abstract damper is often not realized as a concrete component and is still effective by practically always occurring friction and flow losses.
  • ordinary passive vibration absorbers which are exclusively self-excited, of actively controlled vibration absorbers, which are deliberately alienated by a mostly periodic excitation function.
  • EP1710052 is the hollow cylindrical passive vibration damper arranged around the guide tube of the striking mechanism around.
  • the object of the invention consists in the konstrüktiv simple realization of a vibration damper, which is deactivated in the absence of contact pressure.
  • a hand tool with a housing and a Heilfeder Farbwerk with a percussion piston, which strikes a striker, at least one vibration damper with a vibratable absorber mass, which is axially biased by at least one spring to the housing, the vibration absorber via an axially displaceable excitation active from can be excitable in working position.
  • the vibration absorber is only actively excited with the beat frequency if the striker is in the working position due to the contact pressure of the hand tool machine, but not due to the lack of contact pressure in the idling position, in which the vibration absorber swings passively.
  • the excitation means extends at least partially circumferentially through a guide tube for the striker, whereby the excitation means is displaceable by a direct contact with the striker, in particular during rebound of the impact driven tool.
  • the excitation means is annular, whereby no inclinations or bends occur in its contact with the striker.
  • the vibration damper is hollow cylindrical, whereby it can be arranged around the air spring striking around.
  • the vibration absorbers are compact, whereby this (r) space-saving laterally next to the air spring impact mechanism can be arranged / are.
  • Fig. 1 has an axially rotating and hitting hand tool 1 with a housing 2 and a Heilfedertschwerk 3 with a percussion piston 4 which strikes a striker 5, two compact vibration absorber 6, wherein only one is shown, since the second mirror image in the lower, not shown Half-half lies.
  • the vibration damper 6 has a vibratable absorber mass 7, which is axially biased by a first spring 8a to the housing 2.
  • the vibration damper 6 is also active on a second spring 8b via an axially displaceable excitation means 9 can be excited by the located in the illustrated working position anvil 5 when it is repelled by the rebounding tool 10.
  • the excitation means 9 partially penetrates a guide tube 11 for the striker 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (4)

  1. Machine-outil manuelle (1), comprenant un carter (2) et un mécanisme de percussion pneumatique (3) comportant un piston percuteur (4), lequel percute sur une bouterolle (5), machine qui présente au moins un amortisseur d'oscillations (6) comprenant une masse d'amortissement (7, 7'), laquelle est précontrainte axialement en compression par au moins un ressort (8a, 8a') contre le carter (2), l'amortisseur d'oscillations (6, 6') pouvant être excité activement vers une bouterolle (5) se trouvant dans une position de travail par l'intermédiaire d'un moyen d'excitation (9) pouvant être déplacé axialement, caractérisée en ce que le moyen d'excitation (9) traverse au moins partiellement sur la circonférence un tube de guidage (11) pour la bouterolle (5), ce par quoi le moyen d'excitation (9) peut être déplacé par un contact direct avec la bouterolle (5).
  2. Machine-outil manuelle selon la revendication 1, caractérisée en ce que l'amortisseur d'oscillations (6) peut être excité sur un autre ressort (8b) par l'intermédiaire d'un moyen d'excitation (9) pouvant être déplacé axialement.
  3. Machine-outil manuelle selon les revendications 1 ou 2, caractérisée en ce que le moyen d'excitation (9) est conçu de forme circulaire.
  4. Machine-outil manuelle selon l'une des revendications 1 à 3, caractérisée en ce que l'amortisseur d'oscillations (6') est conçu sous la forme d'un cylindre creux.
EP08100787.4A 2007-01-31 2008-01-23 Outil électroportatif amortisseur d'oscillations Active EP1952950B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007000059A DE102007000059A1 (de) 2007-01-31 2007-01-31 Handwerkzeugmaschine mit Schwingungstilger

Publications (3)

Publication Number Publication Date
EP1952950A2 EP1952950A2 (fr) 2008-08-06
EP1952950A3 EP1952950A3 (fr) 2012-11-07
EP1952950B1 true EP1952950B1 (fr) 2014-04-09

Family

ID=39145006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100787.4A Active EP1952950B1 (fr) 2007-01-31 2008-01-23 Outil électroportatif amortisseur d'oscillations

Country Status (5)

Country Link
US (1) US7712548B2 (fr)
EP (1) EP1952950B1 (fr)
JP (1) JP5189373B2 (fr)
CN (1) CN101235869B (fr)
DE (1) DE102007000059A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4647957B2 (ja) * 2004-08-27 2011-03-09 株式会社マキタ 作業工具
JP4573637B2 (ja) * 2004-12-02 2010-11-04 株式会社マキタ 往復動式作業工具
US8485274B2 (en) 2007-05-14 2013-07-16 Makita Corporation Impact tool
JP4965334B2 (ja) * 2007-05-14 2012-07-04 株式会社マキタ 打撃工具
JP4965333B2 (ja) * 2007-05-14 2012-07-04 株式会社マキタ 打撃工具
US7806201B2 (en) * 2007-07-24 2010-10-05 Makita Corporation Power tool with dynamic vibration damping
JP5269566B2 (ja) * 2008-12-03 2013-08-21 株式会社マキタ 作業工具
JP5294826B2 (ja) * 2008-12-19 2013-09-18 株式会社マキタ 打撃工具
JP5361504B2 (ja) * 2009-04-10 2013-12-04 株式会社マキタ 打撃工具
DE102009022088A1 (de) 2009-05-20 2010-11-25 Friedrich Duss Maschinenfabrik Gmbh & Co.Kg Elektrowerkzeugmaschine, insbesondere handgeführter Bohrhammer
DE102009027422A1 (de) * 2009-07-02 2011-01-05 Robert Bosch Gmbh Vorrichtung zur Reduktion und/oder Kompensation von Vibrationen, insbesondere für eine Handwerkzeugmaschine und zur Verwendung in Handwerkzeugmaschinen
DE102009047106A1 (de) * 2009-11-25 2011-05-26 Robert Bosch Gmbh Variation der Eigenfrequenz von Schwingungsmitteln in Elektrowerkzeugen
DE102009054723A1 (de) * 2009-12-16 2011-06-22 Robert Bosch GmbH, 70469 Handwerkzeugmaschine
DE102010030026A1 (de) * 2010-06-14 2012-02-23 Robert Bosch Gmbh Schlagwerk
DE102010040173A1 (de) * 2010-09-02 2012-03-08 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102011007725A1 (de) * 2011-04-20 2012-10-25 Hilti Aktiengesellschaft Handwerkzeugmaschine und Tilger
US8752811B2 (en) * 2011-11-11 2014-06-17 Fives Machining Systems, Inc. Symmetrical head mounted tuned mass damper
DE102012203757A1 (de) * 2012-03-09 2013-09-12 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
FI123928B (en) 2012-09-06 2013-12-31 Robit Rocktools Ltd Method of drillhole exploration, drill arrangement, and drillhole exploration configuration
US10232500B2 (en) 2012-12-17 2019-03-19 Swerea Ivf Ab Impact machine
JP6271577B2 (ja) * 2012-12-17 2018-01-31 スウェレア・アイブイエフ・エービーSwerea IVF AB 衝撃マシン
EP3626398A1 (fr) 2018-09-19 2020-03-25 Hilti Aktiengesellschaft Amortisseur biharmonique à contrainte

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL54623C (fr) * 1935-05-06 1945-06-15
DE815179C (de) 1949-11-17 1951-10-01 Franz Dr-Ing Bollenrath Drucklufthammer mit Massenausgleich
US2875731A (en) * 1956-03-23 1959-03-03 Buckeye Steel Castings Co Vibration absorbers for reciprocating tools
US3845827A (en) * 1971-08-05 1974-11-05 Stihl Maschf Andreas Portable implement,especially motor chain saw
FR2237734A1 (en) 1973-07-16 1975-02-14 Inst Nal Rech Securite Oscillating mass shock absorbers for pneumatic drill - two sliding masses sprung above and below flank drill casing
JPS54127080A (en) * 1978-03-25 1979-10-02 Makoto Nandate Vibration isolation device in handle of machine in which vibration is formed
DE3122979A1 (de) 1981-06-10 1983-01-05 Hilti AG, 9494 Schaan Bohr- oder meisselhammer
JP3574240B2 (ja) * 1995-11-13 2004-10-06 株式会社マキタ ハンマードリル
GB0109747D0 (en) * 2001-04-20 2001-06-13 Black & Decker Inc Hammer
JP4016772B2 (ja) * 2001-11-16 2007-12-05 日立工機株式会社 ハンマドリル
DK1818141T3 (da) 2003-03-21 2010-08-23 Black & Decker Inc Vibrationsreduceringsindretning til værktøjsmaskine og værktøjsmaskine, der indeholder en sådan indretning
EP1464449B1 (fr) 2003-04-01 2010-03-24 Makita Corporation Outil électrique
JP4155857B2 (ja) * 2003-04-01 2008-09-24 株式会社マキタ 作業工具
DE10332109B4 (de) * 2003-07-15 2009-01-15 Wacker Construction Equipment Ag Arbeitsgerät mit Handgriffabfederung
WO2005105386A1 (fr) * 2004-04-30 2005-11-10 Makita Corporation Outil de travail
JP4647957B2 (ja) 2004-08-27 2011-03-09 株式会社マキタ 作業工具

Also Published As

Publication number Publication date
US7712548B2 (en) 2010-05-11
US20080185165A1 (en) 2008-08-07
JP2008188760A (ja) 2008-08-21
EP1952950A3 (fr) 2012-11-07
CN101235869A (zh) 2008-08-06
CN101235869B (zh) 2011-05-25
JP5189373B2 (ja) 2013-04-24
EP1952950A2 (fr) 2008-08-06
DE102007000059A1 (de) 2008-09-18

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