EP2841237B2 - Handführbare werkzeugmaschine mit gehäuse - Google Patents

Handführbare werkzeugmaschine mit gehäuse Download PDF

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Publication number
EP2841237B2
EP2841237B2 EP13721257.7A EP13721257A EP2841237B2 EP 2841237 B2 EP2841237 B2 EP 2841237B2 EP 13721257 A EP13721257 A EP 13721257A EP 2841237 B2 EP2841237 B2 EP 2841237B2
Authority
EP
European Patent Office
Prior art keywords
outer housing
machine tool
hand
electric drive
support devices
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
EP13721257.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2841237B1 (de
EP2841237A2 (de
Inventor
Jürgen Blickle
Uwe Früh
Achim Hess
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=48326233&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2841237(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP2841237A2 publication Critical patent/EP2841237A2/de
Publication of EP2841237B1 publication Critical patent/EP2841237B1/de
Application granted granted Critical
Publication of EP2841237B2 publication Critical patent/EP2841237B2/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • 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

Definitions

  • the present invention relates to a hand-held oscillating machine tool with an outer housing extending substantially along a longitudinal axis, which has a handle area provided for gripping and guiding the machine tool by a user's hand.
  • Hand-held machine tools are known from the prior art, the housings of which are either firmly screwed to the drive devices of the machine tool or have housings which consist of shell components, usually half shells, which are firmly connected to one another.
  • the housings of the machine tools known from the prior art rest at least partially on the elements of the drive device, whereby vibrations from these drive devices are transmitted directly to the housing, which then vibrates with the drive devices, thereby impairing the work safety and handling comfort of such a machine tool.
  • EP 1 752 259 A1 discloses an electric hand tool comprising a motor arranged in a motor housing and a gear for coupling the motor to a tool, wherein the gear is mounted in a separate gear housing, wherein the motor is fixed to the gear housing and freely arranged in the motor housing and the gear housing is connected to the motor housing in a vibration-decoupled manner.
  • the invention is therefore based on the object of providing a hand-held machine tool with improved handling comfort.
  • the tool device serves to transmit the drive torque of the electric drive unit to a tool that is preferably arranged on the tool device.
  • the tool device can have various elements such as gears, clutches and the like. Both the electric drive unit and the tool unit can be designed in several parts.
  • the machine tool preferably has a tool holder at the end of the tool device opposite the electric drive unit, the drive axis of which can also be arranged pivoted at an angle to the drive axis of the electric drive element.
  • the tool holder can be arranged at an outer end of the drive axis, but it can also be arranged in an area spaced from the end of the tool device.
  • the tool holder can also be arranged in a recess in the area of the drive shaft in the tool device, into which a tool can be inserted.
  • the tools that can be used with the machine tool are used in particular for cutting, drilling, grinding, sawing, rasping or for other machining, removing or forming processes. Due to the drive and machining processes on the machining tool and the mass inertia of the machining tool, which is arranged on the tool device, vibrations and shocks occur on the tool device.
  • This minimum distance and the air layer lying between the outer contour and the inner contour lead to a mechanical decoupling of the electric drive device and the tool device from the outer housing and thus to increased handling comfort.
  • the minimum distance also reduces the heat transferred from the drive unit and the tool device to the housing, which also increases handling comfort for the user.
  • At least one damping element is arranged between a first support device and a second support device, which transmits the support forces between a first and a second support device and at the same time maintains the minimum distance between the outer contour and the inner contour.
  • the first and second support devices thus enable sufficient transmission of the support forces such as the guide forces from the user to the machine tool and the processing forces from the tool to the user.
  • the second support devices are also preferably arranged outside the handle area on the outer housing.
  • the inner contour of the outer housing is arranged in the handle area at a minimum distance from the outer contour of the drive elements of the machine tool and can preferably move in this area relative to the outer contour according to the elasticity of the outer housing, which also results in a certain mechanical decoupling of the handle area from the drive elements. This also contributes to the improved handling comfort of the machine tool.
  • At least two arrangements of first and second support devices are arranged as far apart from each other as possible.
  • at least one arrangement of first and second support devices is arranged on the tool device and at least one other arrangement of first and second support devices is arranged on the end of the electric drive unit opposite the tool device.
  • the at least one arrangement of first and second support devices on the tool device enables the user to guide the machine tool well.
  • the at least one arrangement of first and second support devices on the end of the electric drive unit opposite the tool device enables a sufficient connection of the electric drive unit to the outer housing and thus, in conjunction with the arrangement of first and second support devices on the tool unit, a sufficient transmission of the user's guiding forces to the drive devices of the machine tool.
  • the tool device 15 has a drive shaft 16 that is driven in an oscillating manner about a drive axis 17, the drive axis 17 being arranged pivoted downwards by 90° relative to the axis of rotation of the electric drive device, which in the exemplary embodiment coincides with the longitudinal axis 11 of the machine tool.
  • a tool holder 18 At the end of the drive shaft 16 there is a tool holder 18 for holding a suitable machining tool.
  • the masses of the on/off switch 22 and the power regulator 23 shift the center of mass 27 of the outer housing 12 backwards along the longitudinal axis 11 of the machine tool in the direction of the second end area, which is in a direction facing away from the first end area.
  • a second center of mass 27b of the outer housing 12 is shown in the area of the geometric center 29 of the outer housing 10, which in Fig.1 is represented by the axis 29.
  • the optimal center of mass 27 of the outer housing 12 shown as an example is located approximately in the middle of the handle area 21 of the machine tool 10 and is indicated by the center of mass 27c shown.
  • a first support device 31 is arranged on the tool device 15 in the area in which it is accommodated in the outer housing 12.
  • a further first support device 32 is arranged in the rear area of the electric drive unit 14.
  • First support devices 31 and 32 are also arranged in the same position on the hidden, opposite side of the tool device 15 and the electric drive unit 14. This means that two first support devices 31 are arranged in front of the handle area 21 at the level of the axis of rotation of the electric drive device 14, which serve to transmit the support forces from the tool device 15 to the outer housing 12.
  • Two first support devices 32 are also arranged behind the handle area 21 at a distance from the longitudinal axis 11 on the side of the electric drive device 14 which is opposite the tool device 15.
  • first support devices 32 are arranged behind the handle area 21, which serve to transmit the support forces from the electric drive device 14 to the outer housing 12.
  • Second support devices are arranged on the two housing halves, which interact with the first support devices 31 and 32 in order to support the outer contour and the inner contour at a distance a which is at least Minimum distance a from each other.
  • Fig.4 shows an enlarged view of a section through an arrangement of first and second support devices 31 and 36 with a damping element 39 arranged between them.
  • the first support device 31 is designed in the form of a rotationally symmetrical depression, which has the shape of a hollow dome in its end region.
  • the second support device 36 is designed in the form of a rotationally symmetrical pin, which has a corresponding dome-shaped design in its end region.
  • this exemplary embodiment uses first and second support devices 31, 32, 36 between which a damping element 39 is arranged.
  • the supporting forces are supported via the first and second supporting devices 31, 32, 36 relative to the outer housing 12, wherein the outer housing 12 is essentially mechanically decoupled from the electric drive unit 14 and the tool device 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Harvester Elements (AREA)
  • Portable Power Tools In General (AREA)
EP13721257.7A 2012-04-24 2013-04-22 Handführbare werkzeugmaschine mit gehäuse Active EP2841237B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103604A DE102012103604A1 (de) 2012-04-24 2012-04-24 Handführbare Werkzeugmaschine mit Gehäuse
PCT/EP2013/001206 WO2013159903A2 (de) 2012-04-24 2013-04-22 Handführbare werkzeugmaschine mit gehäuse

Publications (3)

Publication Number Publication Date
EP2841237A2 EP2841237A2 (de) 2015-03-04
EP2841237B1 EP2841237B1 (de) 2021-01-06
EP2841237B2 true EP2841237B2 (de) 2024-07-10

Family

ID=48326233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13721257.7A Active EP2841237B2 (de) 2012-04-24 2013-04-22 Handführbare werkzeugmaschine mit gehäuse

Country Status (6)

Country Link
US (1) US10160111B2 (da)
EP (1) EP2841237B2 (da)
CN (1) CN104245238B (da)
DE (1) DE102012103604A1 (da)
DK (1) DK2841237T4 (da)
WO (1) WO2013159903A2 (da)

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* Cited by examiner, † Cited by third party
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US10232479B2 (en) 2013-05-06 2019-03-19 Milwaukee Electric Tool Corporation Power tool including a battery pack isolation system
CN105835012B (zh) * 2015-02-02 2020-08-21 株式会社牧田 作业工具
CN205497394U (zh) 2015-02-15 2016-08-24 苏州宝时得电动工具有限公司 动力工具
JP6703417B2 (ja) * 2016-02-19 2020-06-03 株式会社マキタ 作業工具
US10661426B2 (en) * 2016-02-19 2020-05-26 Makita Corporation Work tool with vibration dampers
JP6795309B2 (ja) * 2016-02-19 2020-12-02 株式会社マキタ 作業工具
US10220501B1 (en) * 2016-06-15 2019-03-05 George P. Davidson Pocket door repair tool
DE102019200317A1 (de) * 2019-01-14 2020-07-16 Robert Bosch Gmbh Handwerkzeugmaschine
EP4119299A1 (de) * 2021-07-12 2023-01-18 Hilti Aktiengesellschaft Handwerkzeugmaschine und verwendung einer handwerkzeugmaschine

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1550532A1 (de) † 2003-12-30 2005-07-06 Robert Bosch Gmbh Handwerkzeugmaschine mit Schwingungsdämpfung

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Also Published As

Publication number Publication date
US10160111B2 (en) 2018-12-25
CN104245238B (zh) 2017-03-22
CN104245238A (zh) 2014-12-24
WO2013159903A3 (de) 2014-06-05
DE102012103604A1 (de) 2013-10-24
EP2841237B1 (de) 2021-01-06
WO2013159903A2 (de) 2013-10-31
DK2841237T4 (da) 2024-10-14
DK2841237T3 (da) 2021-04-06
EP2841237A2 (de) 2015-03-04
US20150144367A1 (en) 2015-05-28

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