EP2119537A1 - Machine-outil électrique manuelle - Google Patents

Machine-outil électrique manuelle Download PDF

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Publication number
EP2119537A1
EP2119537A1 EP08009157A EP08009157A EP2119537A1 EP 2119537 A1 EP2119537 A1 EP 2119537A1 EP 08009157 A EP08009157 A EP 08009157A EP 08009157 A EP08009157 A EP 08009157A EP 2119537 A1 EP2119537 A1 EP 2119537A1
Authority
EP
European Patent Office
Prior art keywords
damping element
hand tool
electric hand
rubber
spring
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Withdrawn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
EP08009157A
Other languages
German (de)
English (en)
Inventor
Heiko Zimmermann
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Priority to EP08009157A priority Critical patent/EP2119537A1/fr
Priority to US12/466,816 priority patent/US20090283282A1/en
Publication of EP2119537A1 publication Critical patent/EP2119537A1/fr
Withdrawn legal-status Critical Current

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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
    • B25F5/006—Vibration damping means
    • 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
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/57—Elastomers, e.g. rubber
    • 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 electric hand tool device comprising a first housing part in particular for receiving a gear and / or a drive motor for a tool and a second housing part to form a handle for guiding the electric hand tool, wherein the first and the second housing part connected to each other, but vibration technology from each other at least partially can be decoupled by at least one spring and damping element is disposed between the housing parts at least one connection point.
  • both housing parts may be made of plastic or alternatively, a housing may be designed as a metal housing.
  • the motor housing also forms a main handle.
  • the motor housing also forms a main handle.
  • it is for example from the U.S. Patent 5,027,910 known to arrange a shock absorbing elastomeric material between an inner and an outer housing.
  • the disadvantage here is that especially when the motor housing should be designed as a handle, the size of the motor housing is greatly limited in terms of the scope, so that the electric hand tool can still be used well.
  • a vibration damping system wherein a pure vibration damping system has the problem that by the damping of the vibration longer continued to remain in the system.
  • EP 5 019 474 A1 an electric hand tool device of the generic type, wherein the motor is fixed to the gear housing and arranged freely in the motor housing and the gearbox housing is vibration-decoupled from the motor housing connected thereto.
  • the spring and damping element is formed in particular by a spring element made of rubber or a rubber-elastic material. Furthermore, it is previously known that the spring and damping element has a different spring stiffness in the axial spring direction than in the oscillating direction.
  • the spring and damping element comprises a coil spring with at least one downstream rubber or rubber-elastic damping element.
  • both a helical spring and a damping element or buffer which can be made of rubber or a rubber elastic material, viewed from the tool, it is possible to ensure that both damping in the axial direction, ie the direction of the machine main axis, and also can take place in a transverse direction. It can be achieved by the special selection of these two elements of the damping system particularly easy the desired vibration decoupling. In addition, the combination of spring and damping elements quickly calms the vibration in the system.
  • the design of the spring and damping element also allows a resilient movement as a pitching movement of the first relative to the second housing part.
  • the damping element can be formed either of rubber or a cellular elastomer, which shows a rubber-elastic behavior.
  • the coil spring is designed as a compression spring.
  • damping elements can be adjusted particularly well in the spring or damping characteristic and vary in terms of their rigidity in wide ranges, both by the geometric shape and by the properties of the material itself, in particular the rubber hardness for the damping element can be selected accordingly.
  • the damping element in such a way that the required grip stiffness is maintained, especially in oscillating direction. In this case, the damping element must not turn out to be particularly soft in the oscillating direction, in order to prevent a spongy feeling when working with the electric hand tool.
  • the particular advantage lies in the series connection of the two different elements, wherein the rubber or rubber-elastic damping element of the coil spring is connected downstream.
  • the axial vibration can be compensated by the spring element, which is preferably mounted on a guide rod to prevent tilting, the vibration in the directions perpendicular thereto by the rubber or rubber-elastic element, which is particularly well in the handle housing, in particular if it is a two-shell housing, can set.
  • the coil spring äuf Vietnamese has a different spring stiffness than the at least one rubber or rubber-elastic damping element.
  • the two elements of the spring and damping element form a coupling oscillator with different frequencies, wherein a range may be predetermined in which an optimal vibration isolation takes place.
  • the width of this frequency range ie the isolation range, experience has shown that the individual case of application can be optimized depending on the respective excitation frequency and the grip mass and the damping factors taking into account the evaluation of hand and arm vibrations that different spring rates for the second Elements, namely coil spring and rubber or rubber-elastic damping element, can be selected to achieve optimum vibration isolation.
  • the spring system is interposed between the housing parts and decouples them in this way.
  • two attachment points are provided for the two housing halves are, so that a particular D-shaped handle is formed by the second housing part, which is formed like a bow and is coupled on both sides of the bracket to the electric power tool and there to the first housing part.
  • a spring and damping system comprising a coil spring and a rubber elastic or rubber damping element is provided or it can alternatively only one, especially in the application of the upper connection point, a spring and damping element comprising a Be provided coil spring and a rubber-elastic or rubber-damping element and at the second connection point only a damping element consisting of one or more rubber dampers or rubber-elastic damping elements, which may be formed or in particular of a cellular elastomer, may be provided.
  • the upper attachment point is preferably in the range of a tool shaft.
  • the housing part (s) is formed as two-shell housing parts consisting of two adjoining housing shells, wherein the contact surface extends in particular axially, the damping element or elements can be arranged between the housing shells, wherein the shells have a receptacle which receives the damping element, wherein the Recording is preferably located in the parting plane of the shells.
  • the one or more spring elements can be set and biased consisting of the coil spring independently of the damping element.
  • the coil spring can be guided on a guide pin, which it encloses.
  • the guide pin may preferably be adjustable in length and follow their change in length when adjusting the spring rate of the coil spring.
  • the spring tension can be adjustable.
  • the damping element may be an annular damping element.
  • a sleeve can be provided in the central opening of the damping element, via which a bias voltage can be applied to the coil spring.
  • the design of the required installation space for the spring / damper element can be optimized.
  • the spring and damping element can be fixed to the two housing parts as follows.
  • the housing part which forms the handle, the spring and damping element as stated above can be accommodated in a form-fitting manner in a receptacle.
  • the other housing part it may be attached via a plug, screw or material connection, in particular of the guide pin.
  • the invention is fundamentally applicable to all electric hand tool devices, but in particular for drills, rotary hammers and impact drills, but also for chisels and screwdrivers.
  • FIG. 1 shows in its entirety a hammer drill, which is provided with the reference numeral 10.
  • the hammer drill in this case has a main machine axis 12, which indicates the axial direction of the device.
  • the hammer drill 10 comprises a first housing part 14 and a second housing part 16, wherein the two housing parts 14 and 16 together form the overall housing of the hammer drill 10.
  • the second housing part 16 is formed as a handle in the form of a bow handle, wherein the handle carries the reference numeral 18 and is fixed with two attachment points 20 and 22 on the first housing part.
  • the electric hand tool device is essentially held and guided by way of the handle 18.
  • connection points 20 and 22 elements serve for a connection of the two housing parts 14 and 16 together and at the same time lead to the vibration-decoupling of the two housing parts 14 and 16, which contributes to a vibration-reduced work with the electric hand tool.
  • connection point 22 it is provided at the connection point 22 that one end of a guide pin 4, which is fixed with its two ends on the one hand in the housing part 16 and the other in the housing part 14 and is variable in its length in the axial direction, is wound by a coil spring 24, which is designed as a compression spring and the two housing parts 14 and 16 biases against each other.
  • the helical compression spring 24 In Direction of a tool that can be provided at one end 26 of the electric power tool 10, the helical compression spring 24 is below a damping element 28 is arranged, which together with the coil spring 24 forms a spring and damping element.
  • damping element 28 is an annular elastomeric elastomeric element made of a cellular elastomer or rubber, which is slidably mounted in the housing part 16 and here between two shells of the clam shell part 16. By the displacement of the elastomeric damping element 28 whose damping effect can be variably adjusted.
  • the guide pin 4 is arranged in the central bore of the damping element 28, wherein the guide pin 4 is enclosed by a sliding sleeve 5, which forms the actual system for the damping element 28.
  • a bias voltage can be applied to the helical compression spring 24 via the sliding sleeve 5, without the damping element 28 being influenced thereby.
  • This mechanism can be used in particular FIG. 2 can be seen, via the sliding sleeve 5, a plate 6 can be moved in the direction of the coil spring 24 and to adjust the sliding sleeve, a screw member 7 is provided which is movable in the axial direction and via the sliding sleeve 5 on the plate 6 on the turns of the screw member 24, a bias voltage can be applied.
  • the stiffness of both the helical compression spring 24 and the damping element 28 can be adjusted so that the stiffness in the axial direction 12 is less than in the oscillating direction, wherein under pendulum direction, the directions perpendicular to axial direction 12 is understood. In this way, a spongy feeling when working can be avoided and yet in the main direction of the load, namely in the axial direction, a good vibration damping can be achieved.
  • both the spring element 24 and the damping element 28 acts and so a greater softness can be adjusted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP08009157A 2008-05-17 2008-05-17 Machine-outil électrique manuelle Withdrawn EP2119537A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08009157A EP2119537A1 (fr) 2008-05-17 2008-05-17 Machine-outil électrique manuelle
US12/466,816 US20090283282A1 (en) 2008-05-17 2009-05-15 Electric hand-held power tool appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08009157A EP2119537A1 (fr) 2008-05-17 2008-05-17 Machine-outil électrique manuelle

Publications (1)

Publication Number Publication Date
EP2119537A1 true EP2119537A1 (fr) 2009-11-18

Family

ID=39735363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009157A Withdrawn EP2119537A1 (fr) 2008-05-17 2008-05-17 Machine-outil électrique manuelle

Country Status (2)

Country Link
US (1) US20090283282A1 (fr)
EP (1) EP2119537A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615634A (zh) * 2010-12-22 2012-08-01 安德烈亚斯.斯蒂尔两合公司 手操纵式工作器械
WO2014028150A1 (fr) * 2012-07-13 2014-02-20 Illinois Tool Works Inc. Outil manuel motorisé
CN106239434A (zh) * 2015-06-12 2016-12-21 美克司株式会社 击打工具
US9993915B2 (en) 2014-01-23 2018-06-12 Black & Decker Inc. Rear handle
US10040184B2 (en) 2014-01-23 2018-08-07 Black & Decker Inc. Rear handle
US10046451B2 (en) 2014-01-23 2018-08-14 Black & Decker Inc. Rear handle
US10137562B2 (en) 2014-01-23 2018-11-27 Black & Decker Inc. Rear handle
EP3778131A1 (fr) * 2019-08-12 2021-02-17 Metabowerke GmbH Boitier pour un appareil outil portatif électrique

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120048580A1 (en) * 2010-09-01 2012-03-01 Hilti Aktiengesellschaft Power tool
US9849577B2 (en) 2012-02-03 2017-12-26 Milwaukee Electric Tool Corporation Rotary hammer
EP2809470B1 (fr) * 2012-02-03 2020-01-15 Milwaukee Electric Tool Corporation Marteau rotatif
JP2014148005A (ja) * 2013-02-01 2014-08-21 Hitachi Koki Co Ltd 携帯型作業機
WO2015017083A1 (fr) 2013-07-15 2015-02-05 Milwaukee Electric Tool Corporation Perceuse à percussion
EP2942158A1 (fr) * 2014-05-09 2015-11-11 HILTI Aktiengesellschaft Machine-outil portative
KR102594898B1 (ko) * 2016-09-23 2023-10-27 엘지전자 주식회사 의류처리장치
CN109789542B (zh) * 2016-10-07 2023-02-03 古斯塔夫.克劳克有限责任公司 工具
DE102017202371A1 (de) * 2017-02-15 2018-08-16 Robert Bosch Gmbh Handwerkzeugmaschine
EP3501750A1 (fr) * 2017-12-19 2019-06-26 Hilti Aktiengesellschaft Machine-outil portative à vibrations amorties
CN110549303A (zh) * 2018-05-31 2019-12-10 苏州宝时得电动工具有限公司 冲击工具
CN216442260U (zh) 2019-06-12 2022-05-06 米沃奇电动工具公司 电动工具
US11623336B2 (en) 2019-08-22 2023-04-11 Ingersoll-Rand Industrial U.S., Inc. Impact tool with vibration isolation

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2335867A1 (de) 1973-07-14 1975-01-30 Metabowerke Kg Motorisch angetriebenes handwerkzeug mit schalldaemmendem gehaeuse
EP0264276A2 (fr) * 1986-10-15 1988-04-20 W. Christie & Grey Limited Dispositif isolant contre les vibrations et/ou le bruit
US5027910A (en) 1990-05-02 1991-07-02 Honsa Ergonomic Technologies, Inc. Vibration-isolated rotary tool
DE4011124A1 (de) 1990-04-06 1991-10-10 Metabowerke Kg Vibrationsgedaempfter handgriff
WO1999056033A1 (fr) * 1998-04-29 1999-11-04 C.I.M.A. Compagnia Italiana Molle Acciaio S.P.A. Element resilient durable destine a des presses
DE10055395A1 (de) 2000-11-09 2002-05-29 Bosch Gmbh Robert Handwerkzeugmaschinenhandgriff
DE10244793A1 (de) 2002-09-26 2004-04-08 Robert Bosch Gmbh Handwerkzeugmaschinengehäuseeinheit
EP1533084A1 (fr) * 2003-11-24 2005-05-25 ITW Befestigungssysteme GmbH Poignée munie de moyens pour amortir les vibrations
DE102004051465A1 (de) * 2004-10-22 2006-04-27 Robert Bosch Gmbh Handwerkzeugmaschine mit schwingungsgedämpftem Pistolenhandgriff
EP1707321A1 (fr) * 2005-03-29 2006-10-04 Makita Corporation Outil motorisé animé d'un mouvement alternatif
DE102006044433A1 (de) * 2006-09-21 2008-04-03 Robert Bosch Gmbh Elektrowerkzeugmaschine mit schwingungsentkoppeltem Griffelement
EP2019474A2 (fr) 2007-07-23 2009-01-28 Continental Automotive GmbH Moteur électrique pour un groupe électro-pompes d`un système antiblocage

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DE4446756C2 (de) * 1994-12-24 1998-11-05 Sram De Gmbh Stoßdämpfermechanismus für die Vorderradgabel von Fahrrädern
US5697456A (en) * 1995-04-10 1997-12-16 Milwaukee Electric Tool Corp. Power tool with vibration isolated handle
GB2414702A (en) * 2004-06-04 2005-12-07 Black & Decker Inc Vibration Reduction Apparatus for Power Tool
ATE396838T1 (de) * 2004-12-23 2008-06-15 Black & Decker Inc Kraftwerkzeuggehäuse

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2335867A1 (de) 1973-07-14 1975-01-30 Metabowerke Kg Motorisch angetriebenes handwerkzeug mit schalldaemmendem gehaeuse
EP0264276A2 (fr) * 1986-10-15 1988-04-20 W. Christie & Grey Limited Dispositif isolant contre les vibrations et/ou le bruit
DE4011124A1 (de) 1990-04-06 1991-10-10 Metabowerke Kg Vibrationsgedaempfter handgriff
US5027910A (en) 1990-05-02 1991-07-02 Honsa Ergonomic Technologies, Inc. Vibration-isolated rotary tool
WO1999056033A1 (fr) * 1998-04-29 1999-11-04 C.I.M.A. Compagnia Italiana Molle Acciaio S.P.A. Element resilient durable destine a des presses
DE10055395A1 (de) 2000-11-09 2002-05-29 Bosch Gmbh Robert Handwerkzeugmaschinenhandgriff
DE10244793A1 (de) 2002-09-26 2004-04-08 Robert Bosch Gmbh Handwerkzeugmaschinengehäuseeinheit
EP1533084A1 (fr) * 2003-11-24 2005-05-25 ITW Befestigungssysteme GmbH Poignée munie de moyens pour amortir les vibrations
DE102004051465A1 (de) * 2004-10-22 2006-04-27 Robert Bosch Gmbh Handwerkzeugmaschine mit schwingungsgedämpftem Pistolenhandgriff
EP1707321A1 (fr) * 2005-03-29 2006-10-04 Makita Corporation Outil motorisé animé d'un mouvement alternatif
DE102006044433A1 (de) * 2006-09-21 2008-04-03 Robert Bosch Gmbh Elektrowerkzeugmaschine mit schwingungsentkoppeltem Griffelement
EP2019474A2 (fr) 2007-07-23 2009-01-28 Continental Automotive GmbH Moteur électrique pour un groupe électro-pompes d`un système antiblocage

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615634A (zh) * 2010-12-22 2012-08-01 安德烈亚斯.斯蒂尔两合公司 手操纵式工作器械
CN102615634B (zh) * 2010-12-22 2015-12-02 安德烈亚斯.斯蒂尔两合公司 手操纵式工作器械
WO2014028150A1 (fr) * 2012-07-13 2014-02-20 Illinois Tool Works Inc. Outil manuel motorisé
US9993915B2 (en) 2014-01-23 2018-06-12 Black & Decker Inc. Rear handle
US10040184B2 (en) 2014-01-23 2018-08-07 Black & Decker Inc. Rear handle
US10046451B2 (en) 2014-01-23 2018-08-14 Black & Decker Inc. Rear handle
US10137562B2 (en) 2014-01-23 2018-11-27 Black & Decker Inc. Rear handle
CN106239434A (zh) * 2015-06-12 2016-12-21 美克司株式会社 击打工具
CN106239434B (zh) * 2015-06-12 2021-06-15 美克司株式会社 击打工具
EP3778131A1 (fr) * 2019-08-12 2021-02-17 Metabowerke GmbH Boitier pour un appareil outil portatif électrique

Also Published As

Publication number Publication date
US20090283282A1 (en) 2009-11-19

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