EP2243601B1 - Suspension d'une poignée sur une outil à main - Google Patents

Suspension d'une poignée sur une outil à main Download PDF

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Publication number
EP2243601B1
EP2243601B1 EP10158111A EP10158111A EP2243601B1 EP 2243601 B1 EP2243601 B1 EP 2243601B1 EP 10158111 A EP10158111 A EP 10158111A EP 10158111 A EP10158111 A EP 10158111A EP 2243601 B1 EP2243601 B1 EP 2243601B1
Authority
EP
European Patent Office
Prior art keywords
handle
machine housing
power tool
damping device
hand held
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
EP10158111A
Other languages
German (de)
English (en)
Other versions
EP2243601A1 (fr
Inventor
Hans Appel
Jens Imaschewski
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 EP2243601A1 publication Critical patent/EP2243601A1/fr
Application granted granted Critical
Publication of EP2243601B1 publication Critical patent/EP2243601B1/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
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006Vibration damping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04Handles; Handle mountings
    • B25D17/043Handles resiliently mounted relative to the hammer housing

Definitions

  • the present invention relates to a hand tool according to the preamble of claim 1, in particular with a striking mechanism.
  • a hammer drill whose handle is connected via damping elements with a machine housing.
  • the damping elements are intended to reduce occurring vibrations in the machine housing.
  • a user must be able to exert a holding force through the damping elements on the machine housing and a tool.
  • the handle is coupled via a damped pivot bearing and a damped, parallel to the striking axis leading bearing.
  • the muted camps lie in one plane.
  • a hand tool machine which has a damping device with three elastic struts.
  • a hand tool machine is known, wherein the damping device between the handle and the machine housing is a body.
  • An object is a suspension of the handle which damps vibrations in the longitudinal direction and a vertical direction and is stable in the transverse direction.
  • the inventive hand tool according to claim 1 includes a machine housing, a handle, and a damping device which couples the handle to the machine housing.
  • the damping device is T-shaped and formed with three elastic struts, wherein a first and a second strut with the machine housing and a third strut are connected to the handle.
  • the three-point attachment and star-shaped design reduces mobility in a plane spanned by attachment points of the struts level.
  • An embodiment provides that a connection region of the first struts with the machine housing on one side of a plane of symmetry of the machine housing and a connection region of the second struts with the machine housing on another Side of the plane of symmetry lie.
  • the damping device may be formed symmetrically to the third strut.
  • An embodiment provides that connecting regions of the first and the second struts are arranged with the machine housing with respect to a connection region of the third strut with the handle at a different vertical distance to a striking axis of the power tool.
  • An embodiment provides that the damping device with respect to a plane, spanned by the connecting portions of the three struts with the handle and the machine housing, is curved.
  • One embodiment provides that a surface of the damping device in the region of the handle points in a first direction and points in the region of the machine tool in a second direction, wherein the first and the second direction are at an angle between 70 ° and 90 °.
  • An embodiment provides that the damping device occupies the entire width of the machine housing in the region of their connection.
  • Fig. 1 shows an exemplary hammer drill 1.
  • a motor 3 In a machine housing 2 of the hammer drill 1, a motor 3, a tool holder 4 and a percussion drill 5 are arranged.
  • the hammer drill 1 can be held by a handle 6, which is connected to the machine housing 2.
  • the machine housing 2 and the handle 6 are at least partially vibration-decoupled from one another by an elastic suspension. Bellows 7 can cover the suspensions.
  • Fig. 2 shows the handle 6 with a partially exposed suspension.
  • An upper suspension 8 has a damping device 9 which is attached to two anchor points 10 on the machine housing 2 and to an anchor points 11 on the handle 6.
  • Fig. 3 shows in a plan view the upper suspension 8.
  • the machine housing 2 is shown transparent.
  • the damping device 9 has three elastic struts 12, 13, 14.
  • the three struts 12, 13, 14 form a T-shaped body.
  • the first strut 12 is oriented substantially parallel to a longitudinal axis 15 of the hammer drill.
  • the other two struts are oriented substantially parallel to a transverse axis 16 of the drilling machine 1.
  • the transverse axis 16 extends perpendicular to the longitudinal axis 15 and a plane of symmetry 17 through the drill 1, ie from right to left.
  • the second and third struts may be about half the width of the machine housing; the width measured at this height along the striking axis 15.
  • the damping device 9 can thus occupy substantially the entire width within the machine housing 2.
  • the first strut 12 is attached to the anchor point 11 on the handle and the other two struts 13, 14 are secured to the anchor points 10 in the machine housing 2.
  • a lower suspension has a pivot bearing 21, which is aligned longitudinally to the transverse direction 16.
  • the handle 6 can be pivoted relative to the machine housing 2 about the pivot bearing 21.
  • the pivot bearing 21 is provided with a damping device for movements in the direction of the longitudinal axis 15.
  • the pivot bearing consists of a bearing 22 and a pin 23 received in the bearing 22.
  • the bearing 22 is connected to the handle 6 and the pin to the machine housing 2.
  • the pin 23 may be at least partially encased with an elastic material.
  • the upper suspension may have a curved construction.
  • the damping device 9 is projected onto the plane of symmetry 17 has a curvature.
  • the associated radius of curvature is preferably on one side of the damping device 9 on which the pivot bearing 21 is also, i. the curvature points away from the pivot bearing 21.
  • the curved damping device 9 allows a more uniform effect of deformation forces over the entire length of the damping device. 9
  • the damping device 21 may be curved so far that an end portion of the strut 12 is inclined at the anchor point 11 by more than 70 ° to an end portion of the struts 13, 14 at the anchor point 13.
  • the angle 19 can also be greater than 90 ° as shown.
  • the anchor points 10 of the machine housing 2 may be closer to a striking axis 25 with respect to the vertical direction 18 than the anchor point 11 of the handle 2.

Landscapes

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

Claims (10)

  1. Outil à main comportant un boîtier de machine, une poignée, un dispositif d'amortissement (8) qui couple la poignée (6) au boîtier de machine (2),
    caractérisé en ce que
    le dispositif d'amortissement (8) est configuré comme un élément en forme de T avec trois branches élastiques (12, 13, 14), une première (13) et une deuxième (14) branches étant reliées au boîtier de machine (2) et une troisième branche (12) étant reliée à la poignée (6).
  2. Outil à main selon la revendication 1, caractérisé en ce qu'une zone de raccordement de la première branche au boîtier de machine (2) se situe sur un côté d'un plan de symétrie du boîtier de machine (2) et une zone de raccordement de la deuxième branche au boîtier de machine (2) se situe sur un autre côté du plan de symétrie.
  3. Outil à main selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'amortissement (8) est configuré de manière symétrique par rapport à la troisième branche.
  4. Outil à main selon l'une quelconque des revendications précédentes, caractérisé en ce que la première branche et la deuxième branche (13, 14) sont agencées perpendiculairement à la troisième branche (12).
  5. Outil à main selon l'une quelconque des revendications précédentes, dans laquelle le dispositif d'amortissement (8) est configuré de manière symétrique par rapport à un plan de symétrie de la poignée (6) et du boîtier de machine (2).
  6. Outil à main selon l'une quelconque des revendications précédentes, caractérisé en ce que des zones de raccordement des première et deuxième branches (13, 14) au boîtier de machine (2) sont agencées par rapport à une zone de raccordement de la troisième branche (12) à la poignée (6) à une distance verticale différente par rapport à un axe de percussion (15) de la machine-outil manuelle.
  7. Outil à main selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'amortissement (8) est incurvé par rapport à un plan défini par les zones de raccordement de la troisième branche à la poignée (6) et au boîtier de machine (2).
  8. Outil à main selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une surface du dispositif d'amortissement (8) est dirigée dans une première direction dans la zone de la poignée (6) et dans une seconde direction dans la zone de la machine-outil, les première et seconde directions étant à un angle entre 70° et 90°.
  9. Outil à main selon la revendication 7 ou 8, caractérisé en ce que la poignée (6) est de plus couplée au boîtier de machine (2) par l'intermédiaire d'un palier rotatif, la courbure du dispositif d'amortissement (8) s'éloignant d'un axe du palier rotatif (20).
  10. Outil à main selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'amortissement (8) occupe la largeur complète du boîtier de machine (2) dans sa zone de raccordement.
EP10158111A 2009-04-23 2010-03-29 Suspension d'une poignée sur une outil à main Active EP2243601B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009002589A DE102009002589A1 (de) 2009-04-23 2009-04-23 Handwerkzeugmaschine

Publications (2)

Publication Number Publication Date
EP2243601A1 EP2243601A1 (fr) 2010-10-27
EP2243601B1 true EP2243601B1 (fr) 2012-01-18

Family

ID=42111412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10158111A Active EP2243601B1 (fr) 2009-04-23 2010-03-29 Suspension d'une poignée sur une outil à main

Country Status (4)

Country Link
US (1) US20100270047A1 (fr)
EP (1) EP2243601B1 (fr)
AT (1) ATE541681T1 (fr)
DE (1) DE102009002589A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201525005U (zh) * 2009-11-05 2010-07-14 南京德朔实业有限公司 一种电动榔头
CN201659545U (zh) * 2009-11-09 2010-12-01 南京德朔实业有限公司 一种电动榔头

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845557A (en) * 1973-06-28 1974-11-05 Mcculloch Corp Chain saw anti-vibration system
DE3410669A1 (de) * 1984-03-23 1985-10-24 Metabowerke GmbH & Co, 7440 Nürtingen Daempfungselement und dessen einbau in ein motorisch angetriebenes handwerkzeug
JPH0625288Y2 (ja) * 1987-03-18 1994-07-06 株式会社共立 チエ−ンソ−のハンドル防振取付装置
DE4124574A1 (de) 1991-07-24 1993-01-28 Wolf Woco & Co Franz J Griffisolierung
GB2262467A (en) * 1991-12-17 1993-06-23 Ingersoll Rand Co Apparatus for reducing vibration transmission in hand-held tool
JPH08126975A (ja) * 1994-10-28 1996-05-21 Hitachi Koki Co Ltd 電気ハンマの防振ハンドル
US5697456A (en) * 1995-04-10 1997-12-16 Milwaukee Electric Tool Corp. Power tool with vibration isolated handle
DE19646622B4 (de) * 1996-11-12 2004-07-01 Wacker Construction Equipment Ag An einem Handgriff führbares Arbeitsgerät
DE29700003U1 (de) * 1997-01-02 1997-02-27 Wacker-Werke Gmbh & Co Kg, 85084 Reichertshofen Aufbruch- und/oder Bohrhammer
DE10034768A1 (de) * 2000-07-18 2002-02-07 Bosch Gmbh Robert Elektrokombihammer
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
GB2407791A (en) * 2003-11-04 2005-05-11 Black & Decker Inc Vibration reduction apparatus for a power tool
DE10355103B4 (de) * 2003-11-24 2010-03-18 Itw-Befestigungssysteme Gmbh Vibrationsgedämpfter Handgriff für ein handgeführtes Elektrowerkzeug
DE102004041219A1 (de) * 2004-08-26 2006-03-02 Robert Bosch Gmbh Handwerkzeugmaschinengriffvorrichtung mit einer Vibrationsabschirmeinheit
DE102005038091A1 (de) * 2005-08-11 2007-02-15 Hilti Ag Handwerkzeuggerät mit Vibrationsminderung
DE102005061870A1 (de) * 2005-12-23 2007-07-05 Robert Bosch Gmbh Handwerkzeugmaschine
DE102005000205A1 (de) * 2005-12-23 2007-06-28 Hilti Ag Handgriff eines handgeführten Werkzeuggerätes
GB2431610A (en) * 2006-03-03 2007-05-02 Black & Decker Inc Handle Damping System
JP4626574B2 (ja) * 2006-06-16 2011-02-09 日立工機株式会社 電動工具
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
JP4756473B2 (ja) * 2006-07-20 2011-08-24 日立工機株式会社 電動工具
DE102006000375A1 (de) * 2006-07-27 2008-01-31 Hilti Ag Handwerkzeuggerät mit Entkoppelungsanordnung
DE102007001591A1 (de) * 2007-01-10 2008-07-17 Aeg Electric Tools Gmbh Tragbare, handgeführte Werkzeugmaschine

Also Published As

Publication number Publication date
ATE541681T1 (de) 2012-02-15
EP2243601A1 (fr) 2010-10-27
US20100270047A1 (en) 2010-10-28
DE102009002589A1 (de) 2010-10-28

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