EP2253430B1 - Machine-outil électrique, notamment perceuse manuelle - Google Patents

Machine-outil électrique, notamment perceuse manuelle Download PDF

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Publication number
EP2253430B1
EP2253430B1 EP10005204A EP10005204A EP2253430B1 EP 2253430 B1 EP2253430 B1 EP 2253430B1 EP 10005204 A EP10005204 A EP 10005204A EP 10005204 A EP10005204 A EP 10005204A EP 2253430 B1 EP2253430 B1 EP 2253430B1
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EP
European Patent Office
Prior art keywords
handle
tool machine
electric tool
main handle
machine according
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
EP10005204A
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German (de)
English (en)
Other versions
EP2253430A1 (fr
Inventor
Gerhardt Schroth
Frank Nothacker
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.)
Friedrich Duss Maschinenfabrik & Co KG GmbH
Original Assignee
Friedrich Duss Maschinenfabrik & Co KG GmbH
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Application filed by Friedrich Duss Maschinenfabrik & Co KG GmbH filed Critical Friedrich Duss Maschinenfabrik & Co KG GmbH
Publication of EP2253430A1 publication Critical patent/EP2253430A1/fr
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Publication of EP2253430B1 publication Critical patent/EP2253430B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION 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
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • 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
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION 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
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means

Definitions

  • the invention relates to a power tool, in particular a hand-held hammer drill according to the preamble of claim 1.
  • a tool is guided in a tool holder of such a power tool, so that the device can be used, for example, as a drill, chisel or percussion hammer.
  • the machine tool thus forms a vibration system which is excited during operation by the drive arrangement for the tool.
  • the decoupling device is arranged in this power tool between main handle and housing.
  • An attachment for an additional handle is provided, however, this attachment is located on the housing of the machine.
  • a drive unit drives a drive axle. Facing away from a tool, a saw chain, a main handle arranged transversely to the drive axis is provided, which is decoupled from the drive unit by a vibration decoupling. Furthermore, the additional handle, which is also decoupled via the decoupling device, is provided. As a result, the comfort when holding the device can be improved, which in turn allows a longer work without fatigue of the operator.
  • a power tool in which a dynamic vibration reducer is arranged in the machine housing.
  • a vibration absorber comprises at least a weight and at least one elastic element, wherein the elastic element is arranged between the weight and the housing and serves to exert a biasing force on the weight.
  • the weight reciprocates against the biasing force of the elastic member upon actuation of the machine along the drive axis for the tool.
  • the dynamic vibration reducer reduces vibrations in the housing in the longitudinal direction of the tool be generated during work.
  • the DE 21 2005 000 027 U1 proposes various arrangements for such a vibration damper, such as, for example, an arrangement in the transition region between the main handle and the housing.
  • the present invention has the object, a power tool in such a way that a reliable vibration and vibration decoupling is also possible when using an additional handle and for this additional handle.
  • a mounting option for an additional handle is provided on the main handle, creating a "compressor position" during operation of the machine tool is possible, ie with both hands the machine can be performed in the area of the main handle.
  • the arrangement of the decoupling device under the handle allows a decoupling of the auxiliary handle.
  • the decoupling device is preferably designed in multiple stages.
  • a normal position i. when guiding the machine with one hand and possibly another hand on the further handle near the tool holder, e.g. when working horizontally only a first stage of the spring elements acts, while in the compressor position, in which the pressure on the handle is greater overall, a reinforced suspension acts through a second stage of elastic elements.
  • Both the decoupling device and optionally a vibration damper are preferably arranged in the transition region between the main handle and the drive arrangement or housing.
  • the area in which the device is guided significantly damped in terms of vibration and vibration, so that a longer tamper-free operation is possible.
  • the decoupling device and vibration absorber are preferably arranged as a damping unit in a region which is required for ergonomic reasons for the operation of the machine in the transition region between the handle and housing anyway, this damping unit does not contribute. This also ensures a good corner drilling capability, that is, the device can be brought up close to the corners with its drive axle and thus with the tool.
  • decoupling device and vibration absorber are located substantially in the drive axle, preferably symmetrical to the drive axle, so that the damping unit is mounted exactly where the vibrations are transmitted.
  • the damping unit is very effective.
  • the decoupler and the vibration absorber are preferably housed in a common damping unit, they are damped by independent spring systems.
  • the damping unit only increases the length of the machine, but is due to the immediate proximity to the percussion axis especially effective.
  • the damping unit is a structural unit that can be removed as needed by the power tool. As a result, on the one hand, it can be completely pre-assembled, which reduces the assembly costs, on the other hand, it can be retrofitted to older machines.
  • the figures show a power tool, in particular a hand-held hammer drill.
  • a drive assembly 11 is mounted for driving a tool holder 12.
  • a graphically not shown tool such as a chisel or a drill can be added, so that the power tool can be used as a chisel, drill or rotary hammer.
  • a damping unit explained in more detail below can also be used on other machine tools.
  • the drive assembly guides the tool along or about a drive axis aa, which according to Fig. 1 through the left side of the transition region between the main handle 13 and housing 10 leads.
  • the main handle 13 is arranged at the end remote from the tool holder 12 end of the power tool and is used to hold the machine tool in a basic position, for example, for mostly horizontal drilling.
  • the main handle 13 extends almost transversely to the drive axis aa.
  • another handle 27 is provided for driving the power tool on demand.
  • Fig. 1 the main handle 13 a drawing not shown or mounting option for attaching an auxiliary handle 23, wherein the arrangement of the auxiliary handle preferably transverse to the drive axis aa approximately in line with the main handle 13, as in Fig. 1 shown, takes place.
  • a so-called "compressor position" is possible, ie the power tool can in a representation as in Fig. 1 directed downwards so that one hand on the main handle 13 and the other hand on the auxiliary handle 23 leads the device.
  • the decoupling device can also be provided only on one side, then preferably approximately in the drive axle aa be if on the other side, for example, a rotary joint or other decoupling or even no decoupling is provided. Due to the arrangement of the auxiliary handle 23 on the main handle, in principle, the additional handle is decoupled from vibrations; Basically, because this does not have to apply to every position of the power tool, which will be discussed in more detail below.
  • Fig. 2 and 3 is in the same area, ie between main handle 13 and drive assembly 11 and housing 10 and a vibration damper 15 is provided.
  • the vibration damper 15 has at least one weight 16 and at least one elastic element, wherein a plurality of elastic elements 17,18 are provided in the embodiment.
  • the elastic element 17, 18 is arranged between the weight 16 and the housing 10 or main handle 13.
  • the at least one elastic element 17, 18 is connected at least on one side to the weight 16 for connection to the housing 10.
  • an elastic element as a pressure and tension element form, so for example as a compression and tension spring.
  • the figures each show an arrangement of the power tool in which the tool holder is directed downward.
  • Fig. 2 shows a arranged on the main handle 13 right vibration isolation 14 and a vibration decoupling also on the left side in the drive axle aa.
  • the attenuation unit 22 on the left side is significantly larger and in Fig. 3 shown enlarged.
  • the damping unit 22 comprises on the one hand approximately centrally the decoupling device 14 with the elastic elements 20 and 21.
  • the elastic elements are in a sleeve-shaped guide 25 and with its other end on the one hand on the housing 10 or a comparable element such as the bottom of the damping housing and on the other Main handle 13 stored.
  • the guide 25 serves to guide the weight 16 by receiving 16a for the elastic means, ie, helical springs 17 and 18 are provided.
  • the linear guide 24 is arranged for the main handle.
  • each spring is provided as elastic elements 20 and 21 as a decoupling device.
  • the elastic means 17 are mounted on the one hand in the receptacle 16a of the weight 16 and on the other hand supported on the housing.
  • the elastic means 18 are also mounted on the weight and in Fig. 3 mounted on top of a support plate 26.
  • Decoupling device 14 and vibration absorber 15 are therefore connected to the housing 10 and the main handle 13 via separate elastic elements 17, 18, 19; 20, 21. They are accommodated in a common damping unit 22, which is removable as a structural unit as needed by the power tool and thus can be retrofitted to older machines.
  • the damping unit can be pre-assembled, which reduces installation costs.
  • a further elastic element 19 is received in the damping unit and as part of the decoupling device 14, a further elastic element 19 is received.
  • This further elastic element 19 is used in particular, although the additional handle 23 according to Fig. 1 is attached to the power tool. Due to the arrangement of the decoupling device and also of the vibration damper between the main handle 13 and housing 10, the vibrations are also damped on the auxiliary handle 23, since this is arranged on the main handle 13. However, in the then preferably applied compressor position, ie when guided with two hands, applied by the user more pressure.
  • the at least one further elastic element 19 - in the embodiment, two springs are provided for - in operative engagement, while it is normally disengaged only on the main handle 13 alone at an operation.
  • This multi-stage arrangement of the decoupling ensures that in the compressor position relative to the normal position, ie guiding the device only on the main handle, a reinforced suspension is present, otherwise the elastic elements 20 and 21 of the first stage of the decoupling device 14 would be suppressed.
  • the decoupling devices 14 are arranged in or parallel to the drive shaft aa and guided on the linear guides 24 for the main handle 13.
  • the at least one further elastic element 19 is according to Fig. 3 arranged parallel to the drive shaft aa, but preferably offset in the direction of the auxiliary handle 23 to the drive shaft aa parallel offset, which also corresponds to the type of force application by the user.
  • the multi-stage decoupling device can be used in conjunction with an attachable to the main handle additional handle without a vibration absorber and then with the exception of the weight 15 and the elastic elements acting thereon 17, 18 have a construction comparable to the exemplary embodiment.

Landscapes

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

Claims (8)

  1. Machine-outil électrique, en particulier perforatrice à main, comprenant :
    - un dispositif d'entraînement (11) logé dans un boîtier (10) pour l'entraînement d'un porte-outil (12) le long ou autour d'un axe d'entraînement (a-a),
    - une poignée principale (13) disposée à l'extrémité opposée au porte-outil (12) pour tenir la machine-outil électrique et s'étendant perpendiculairement à l'axe d'entraînement (a-a),
    - un organe de désaccouplement (14) pour un désaccouplement pivotant au moins partiel de la poignée principale (13) du dispositif d'entraînement (11),
    caractérisé en ce qu'il est prévu un récepteur pour l'apport d'une poignée supplémentaire (23) sur la poignée principale (13), en ce que la poignée supplémentaire est également désaccouplée au moyen de l'organe de désaccouplement (14) et en ce que la poignée supplémentaire (23) est disposée en cours d'utilisation perpendiculairement à l'axe d'entraînement (a-a) à peu près alignée avec la poignée principale (13).
  2. Machine-outil électrique selon la revendication 1, caractérisée en ce que le dispositif de désaccouplement (14) comporte plusieurs niveaux et présente plusieurs éléments élastiques (19,20,21).
  3. Machine-outil électrique selon la revendication 1 ou 2, caractérisée en ce qu'au moins un élément élastique supplémentaire (19) vient en prise lors de l'actionnement simultané de la poignée principale (13) et de la poignée supplémentaire (23).
  4. Machine-outil électrique selon la revendication 3, caractérisée en ce qu'au moins un élément élastique supplémentaire (19) est essentiellement hors de prise lors de l'actionnement au moyen de la poignée principale (13) et éventuellement de à poignée supplémentaire (17).
  5. Machine-outil électrique selon la revendication 3 ou 4, caractérisée en ce qu'au moins un autre élément élastique (19) est disposé parallèlement à l'axe d'entraînement (a-a) dans la direction de la poignée supplémentaire (23) de façon décalée par rapport à l'axe d'entraînement (a-a).
  6. Machine-outil électrique selon l'une des revendications précédentes, caractérisée en ce qu'un amortisseur de vibrations (15) est prévu avec au moins un poids (16) et au moins un élément élastique (17,18), au moins un élément élastique (17,18) reliant au moins d'un côté le poids (16) au boîtier (10), et en ce que l'amortisseur de vibrations (15) est aussi disposé entre la poignée principale (13) et le dispositif d'entraînement (11).
  7. Machine-outil électrique selon la revendication 6, caractérisée en ce que le dispositif de désaccouplement (14) et l'amortisseur de vibrations (15) sont logés dans une unité d'amortissement commune (22).
  8. Machine-outil électrique selon la revendication 7, caractérisée en ce que l'unité d'amortissement (22) est fabriquée d'un seul tenant et peut au besoin être retirée de la machine-outil électrique.
EP10005204A 2009-05-20 2010-05-19 Machine-outil électrique, notamment perceuse manuelle Active EP2253430B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009022088A DE102009022088A1 (de) 2009-05-20 2009-05-20 Elektrowerkzeugmaschine, insbesondere handgeführter Bohrhammer

Publications (2)

Publication Number Publication Date
EP2253430A1 EP2253430A1 (fr) 2010-11-24
EP2253430B1 true EP2253430B1 (fr) 2011-11-02

Family

ID=42260797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10005204A Active EP2253430B1 (fr) 2009-05-20 2010-05-19 Machine-outil électrique, notamment perceuse manuelle

Country Status (4)

Country Link
EP (1) EP2253430B1 (fr)
AT (1) ATE531486T1 (fr)
DE (1) DE102009022088A1 (fr)
ES (1) ES2376039T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4194150A3 (fr) * 2021-12-08 2023-08-23 Chen-Hsuan Huang Outil à main pour réduire les vibrations de la main
US11872665B2 (en) 2021-04-01 2024-01-16 Milwaukee Electric Tool Corporation Integrated dust extractor and power tool
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012006747U1 (de) * 2012-07-13 2013-10-16 Illinois Tool Works, Inc. Motorisch angetriebenes Handwerkzeug
US20140262402A1 (en) 2013-03-14 2014-09-18 Robert Bosch Gmbh Power Hand Tool with Vibration Isolation
EP2848370A1 (fr) * 2013-09-12 2015-03-18 HILTI Aktiengesellschaft Machine-outil manuelle
EP2898994A1 (fr) 2014-01-23 2015-07-29 Black & Decker Inc. Outil électrique avec une poignée arrière
EP2898992B1 (fr) 2014-01-23 2016-05-04 Black & Decker Inc. Outil électrique avec poignée arrière, méthode d'assemblage d'une partie d'une poignée pour un outil électrique et méthode de démontage d'une partie d'une poignée pour un outil électrique
EP2898991B1 (fr) 2014-01-23 2018-12-26 Black & Decker Inc. Poignée arrière
EP2898993B1 (fr) 2014-01-23 2019-01-30 Black & Decker Inc. Outil electrique
EP4219082A1 (fr) * 2017-07-31 2023-08-02 Milwaukee Electric Tool Corporation Outil électrique rotatif
LT3446834T (lt) * 2017-08-24 2020-03-25 Scheppach Fabrikation Von Holzbearbeitungsmaschinen Gmbh Elektrinis skeliamasis kūjis

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DE878737C (de) * 1951-02-09 1953-06-05 Licentia Gmbh Kompensator fuer mechanische Schwingsysteme, die erzwungene Schwingungen ausfuehren
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
GB0109747D0 (en) 2001-04-20 2001-06-13 Black & Decker Inc Hammer
DE10130088C2 (de) * 2001-06-21 2003-10-16 Hilti Ag Schlagendes Elektrohandwerkzeuggerät mit aktiver Vibrationsdämpfung
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JP2005074573A (ja) * 2003-09-01 2005-03-24 Makita Corp 往復作動式作業工具
JP4647957B2 (ja) 2004-08-27 2011-03-09 株式会社マキタ 作業工具
DE102004061521A1 (de) 2004-12-21 2006-06-29 Hilti Ag Werkzeuggerät mit entkoppeltem Haupthandgriff
JP5041575B2 (ja) 2006-03-07 2012-10-03 日立工機株式会社 打撃工具
DE102006044433A1 (de) 2006-09-21 2008-04-03 Robert Bosch Gmbh Elektrowerkzeugmaschine mit schwingungsentkoppeltem Griffelement
DE102006054189A1 (de) 2006-11-16 2008-05-21 Robert Bosch Gmbh Handgriffschwingungsdämpfungsvorrichtung
DE102007000059A1 (de) 2007-01-31 2008-09-18 Hilti Aktiengesellschaft Handwerkzeugmaschine mit Schwingungstilger
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AU2008250208B2 (en) 2007-05-01 2012-02-16 Hitachi Koki Co., Ltd. Reciprocating tool
EP2105261A1 (fr) * 2008-03-27 2009-09-30 AEG Electric Tools GmbH Outil électrique, en particulier marteau perforateur et/ou burineur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
US11872665B2 (en) 2021-04-01 2024-01-16 Milwaukee Electric Tool Corporation Integrated dust extractor and power tool
EP4194150A3 (fr) * 2021-12-08 2023-08-23 Chen-Hsuan Huang Outil à main pour réduire les vibrations de la main

Also Published As

Publication number Publication date
ATE531486T1 (de) 2011-11-15
DE102009022088A1 (de) 2010-11-25
EP2253430A1 (fr) 2010-11-24
ES2376039T3 (es) 2012-03-08

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