EP1908549A1 - Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur - Google Patents

Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur Download PDF

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Publication number
EP1908549A1
EP1908549A1 EP06021103A EP06021103A EP1908549A1 EP 1908549 A1 EP1908549 A1 EP 1908549A1 EP 06021103 A EP06021103 A EP 06021103A EP 06021103 A EP06021103 A EP 06021103A EP 1908549 A1 EP1908549 A1 EP 1908549A1
Authority
EP
European Patent Office
Prior art keywords
flange
hand tool
electric hand
protective cover
tool 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.)
Granted
Application number
EP06021103A
Other languages
German (de)
English (en)
Other versions
EP1908549B1 (fr
Inventor
Susanne Dipl.-Ing. Schmidberger-Brinek
Norbert Dipl.-Ing. Schur
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 AT06021103T priority Critical patent/ATE457849T1/de
Priority to DE502006006187T priority patent/DE502006006187D1/de
Priority to EP06021103A priority patent/EP1908549B1/fr
Priority to CNA2007101615272A priority patent/CN101157196A/zh
Priority to US11/867,148 priority patent/US7524239B2/en
Publication of EP1908549A1 publication Critical patent/EP1908549A1/fr
Application granted granted Critical
Publication of EP1908549B1 publication Critical patent/EP1908549B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Definitions

  • the invention relates to an electric hand tool device, in particular angle grinder, with a machine housing for receiving a motor for rotating drive a drive shaft and an angle gear hereby connected output shaft for receiving a grinding tool at its free end, wherein a grinding tool with a body at least partially surrounding protective hood, which has a guard neck connected to the body and with this on a arranged on the machine housing flange detachable and rotatable adjustable in discrete positions, the guard is festleg- in a rotational position by means of a locking lever on the flange and lockable and For this purpose, a locking cam on the locking lever passes through an opening in the protective hood.
  • a protective cover is often provided, which has the task that when working from the rotating tool, for. B. grinding or cutting disc, throwing sparks or material particles away from the operator.
  • the protective hood covers only a limited angular range of the circular grinding tool, generally 180 ° of the rotating tool. As a rule, this provides adequate protection for the various work assignments.
  • the guard is designed adjustable in terms of their rotational position to the machine housing.
  • the protective hood is usually provided symmetrically to the housing longitudinal axis on the side of the grinding tool pointing in the direction of the machine housing.
  • the protective hood In order to achieve that the protective hood is rotated by the operator into the necessary protective position, it is advantageous if the protective hood can be adjusted without tools. Only if an adjustment is not cumbersome, is a work-fair attitude of the Protective hood and thus a safe protection of the operator even when a tool bursts.
  • the DE 102 59 520 A1 a corresponding electric hand tool device, in which a protective hood is provided, for which purpose a toothed portion is formed on a clamping neck of the machine housing, in which a on a clamp, which is mounted on the guard, arranged pawl can engage, under spring force in the direction of the toothed portion is charged.
  • a hand lever is provided which is mounted directly on the clamp.
  • a corresponding embodiment has the disadvantage that the clamp, if it is a metal clamp, must first be attached to the guard and it may be necessary to adjust the clamp so that it is securely fixed to a neck of the guard.
  • a generic electric hand tool device in which the pivot axis of the locking lever is parallel to the longitudinal axis of the angle grinder and the locking lever is arranged transversely to the longitudinal axis of the angle grinder.
  • the protective cover consists of two elements, namely a base body and a hat-like design, which is connected to the base body and engages in its cylindrical portion, namely the guard neck, the flange of the electric hand tool device.
  • the recesses for locking are arranged in the brim of the hat-shaped element of the protective hood, this has the disadvantage that this area of the protective hood is more heavily loaded, for example, when a bursting of the tool and it can come to an involuntary release of the lock.
  • the invention is based on this prior art, the task of providing an electric hand tool device with a protective cover that is easily connectable to the electric hand tool and the good security of the user even with zerberstendem tool offers.
  • the invention solves this problem by an electric hand tool device of the generic type in which a pivot axis of the locking lever is arranged parallel to the output shaft and the openings are arranged in the protective hood neck of the guard.
  • the arrangement of the locking lever has such that a pivot axis is arranged parallel to the output shaft, the advantage of a particularly ergonomic pivoting of the guard.
  • the lever can be operated in this arrangement when the user of the Electric hand tool this in the usual working position in the hand, without having to first hand over the machine, for example, without having to turn the machine with the tool upwards in order to operate the lever easily.
  • a simple adjustment of the rotational position results in the user being more willing to make a corresponding adjustment.
  • a provision of the latching connection in the protective cover instead of in the gearbox flange is advantageous, since this usually consists of a more stable material than the gearbox flange and thus in the case of a breakage of the tool, the protective cover remains securely in position.
  • the lever on the flange offers the advantage of a facilitated guard change, the guard itself must be designed less expensive.
  • the locking lever is biased in the radial direction on a neck of the flange.
  • the bias can here in particular by means of a spring element, wherein the spring element can also be supported on the flange.
  • the spring can be loosely inserted and is fixed by the assembly of gear flange and housing of the electric hand tool device with respect to the location.
  • the locking lever has an actuating portion at its end remote from the pivot axis.
  • This actuating portion can be angled away from the rest of the lever, that an easier gripping of the actuating portion and thus the lever is made possible.
  • the actuating portion may be bent radially outwardly with respect to the output shaft so as to allow easy gripping.
  • the locking cam is arranged centrally between the pivot axis and the actuating portion.
  • a spring-loaded fixing of the locking cam which passes through the opening in the protective cover allows compensation for any play of the protective cover to the flange. Furthermore, it can be provided that the position of the locking lever and the shape of the locking cam are chosen so that the locking cam wedged in the event of rupture of the tool in the opening of the guard neck and so inadvertent release can be further avoided.
  • the locking cam is supported on a projection on the flange in the circumferential direction or particularly preferably engages in a recess provided for this purpose on the gear flange.
  • the flange can be detachably connected to the machine housing or integrally connected thereto, in particular can be formed directly on this.
  • the flange has a groove which is spaced so far in particular from the free end facing the tool, that a sufficient axial distance between the protective hood and the tool is given.
  • this groove the guard is guided and held in the axial direction.
  • guide elements are provided on the protective hood, which are in the groove intervention.
  • the guide elements are preferably smaller in size than the locking cam.
  • extending grooves are provided in the axial direction, in which the guide elements are placed when placing the guard on the flange, so that the guard can then be pushed towards the housing on the flange until the guide elements lie in the radially extending groove come and then can be twisted, so that an axial withdrawal is prevented.
  • the axial grooves are dimensioned differently and thus give the position during assembly.
  • a spring element can be attached to the flange, via which the protective hood in the axial direction against a stop, which is preferably formed by the edge of the groove, can be prestressed in the flange.
  • a spring corrugated in the axial direction is arranged between the protective hood and the flange.
  • Figure 1 shows a protective hood, which is provided in its entirety by the reference numeral 12.
  • the protective hood comprises a main body 14 and a protective hood neck 16.
  • the protective hood neck 16 may be integrally connected to the protective hood main body 14. Alternatively, however, other connection options, such as gluing, riveting, welding or soldering are possible. It may be provided that the base body 14 is made of a different material than the protective hood neck 16. In this way, then both parts of the protective hood 12 can be optimally dimensioned with respect to their strength.
  • FIG. 1 shows a latching lever 18 which, as can be seen in FIG. 2, is fixed to a flange 20 of an electric hand tool device.
  • the flange 20 is omitted as such for better visibility of the individual elements.
  • the locking lever 18 is pivoted about an axis 22 which is parallel to the axis of an output shaft whose axis is designated 24 in Figure 4, runs.
  • an actuating portion 26 is provided, on which the operator of a corresponding electric hand tool for actuating the locking lever 18 engages.
  • the actuating portion 26 may be provided here for better durability with a profiling 28 to prevent slipping off the locking lever 18.
  • the main body 14 of the protective cover 12 has a cup-shaped design with a parallel to a Tool, in particular a grinding or cutting disc arranged bottom portion 30 and a guided around the tool substantially cylindrical portion 32.
  • the base body 14 of the protective cover 12 substantially covers 180 ° of a corresponding tool.
  • the guard neck 16 serves to fix it on the flange 20, where it engages over a corresponding cylindrical portion 34.
  • the guard neck has a substantially cylindrical shape, wherein on the inside of the guard neck 16 guide members 36 are arranged, which serve for rotatable guidance of the guard on the cylindrical portion 34 of the flange and engage in a groove 38 in the assembled state and thus an axial release of the guard 12 prevent the flange 20.
  • the guard neck 16 has openings 40 which may be distributed substantially over a portion of the circumference or over the entire circumference of the guard and serve to fix and control the discrete rotational positions of the guard 12 with respect to an electric hand tool.
  • a locking cam 42 passes through one of the openings 40 of the protective hood neck and thus fixes the rotational position of the protective hood 12 relative to the flange.
  • the locking cam is in this case integrally formed on the locking lever 18 and designed so that it is wedged in the load 40 in the opening.
  • FIG. 2 now shows the flange 20, which pass through the openings 44 in the flange by means of screw connections (not shown), on a not shown Machine housing an electric hand tool device can be fixed.
  • the flange has a central opening 46, through which the output shaft of the electric hand tool device, which is likewise not shown, extends.
  • the flange comprises, in addition to the cylindrical portion 34, a flange plate 48, which essentially serves for attachment to the electric hand tool.
  • the cylindrical portion 34 of the flange 20 has at its outer periphery axial grooves 50, in which the guide members 36 are inserted during the axial attachment of the protective cover 20.
  • Guide elements 36 'and 36 "are identifiable in this regard, correspondingly configured axial grooves 50' and 50" corresponding to a placement of the protective cover and joining in the axial direction only in a certain predetermined As soon as the protective hood 12 has been pushed onto the cylindrical section 34 of the flange 20 so far that the guide elements 36 come to lie in the region of the radial groove 38, the protective hood can be rotated, with the guide elements 36 in the radial groove are guided and so axial removal of the protective cover 12 can be avoided.
  • Figure 2 shows the locking lever 18, which engages with an unrecognizable locking cam 42, an opening 40 in the protective cover after placing the guard 12 and thus locks the guard 12 in a rotational position.
  • Figure 3 shows a mounted position, in which case the protective cover 12 is fixed to the flange 20.
  • the detent lever 18 is biased by a spring 52 in the detent position, so as to prevent vibrations during operation of the Electric hand tool device to prevent accidental release of the locking cam from the opening.
  • Figure 4 shows a section along the line A-A, wherein the engagement of the locking cam 42 can be seen through an opening 40 in the protective cover 12 and wherein the locking cam 42 abuts in the locked position against the cylindrical portion 34 of the flange 20. Furthermore, Figure 4 shows an additional mechanism for reducing the clearance between the guard 12 and flange 20.
  • a spring 54 is mounted between the two elements, which has a corrugated in the axial direction and thus compensates for the game between the flange 20 and guard 12. In this case also provides the spring 52 which applies the locking lever 18 against the protective cover 12 and the flange, for a clearance compensation in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP06021103A 2006-10-07 2006-10-07 Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur Active EP1908549B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT06021103T ATE457849T1 (de) 2006-10-07 2006-10-07 Elektrohandwerkzeuggerät, insbesondere ein winkelschleifer mit einer schutzhaube
DE502006006187T DE502006006187D1 (de) 2006-10-07 2006-10-07 Elektrohandwerkzeuggerät, insbesondere ein Winkelschleifer mit einer Schutzhaube
EP06021103A EP1908549B1 (fr) 2006-10-07 2006-10-07 Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur
CNA2007101615272A CN101157196A (zh) 2006-10-07 2007-09-29 电动手持工具机,特别是弯把手提砂轮机
US11/867,148 US7524239B2 (en) 2006-10-07 2007-10-04 Electric hand tool—in particular an angle sander/grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06021103A EP1908549B1 (fr) 2006-10-07 2006-10-07 Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur

Publications (2)

Publication Number Publication Date
EP1908549A1 true EP1908549A1 (fr) 2008-04-09
EP1908549B1 EP1908549B1 (fr) 2010-02-17

Family

ID=37781910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06021103A Active EP1908549B1 (fr) 2006-10-07 2006-10-07 Outil motorisé portatif, en particulier une meuleuse d'angle, avec un capot protecteur

Country Status (5)

Country Link
US (1) US7524239B2 (fr)
EP (1) EP1908549B1 (fr)
CN (1) CN101157196A (fr)
AT (1) ATE457849T1 (fr)
DE (1) DE502006006187D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115459A1 (fr) * 2008-03-18 2009-09-24 Robert Bosch Gmbh Machine-outil portative, en particulier meuleuse manuelle
EP2189244A2 (fr) 2008-11-20 2010-05-26 Metabowerke Gmbh Appareil de meulage d'angle doté d'un capot protecteur
WO2011042460A1 (fr) * 2009-10-06 2011-04-14 Metabowerke Gmbh Outil électrique portatif à capot de protection réglable
CN102398194A (zh) * 2011-08-26 2012-04-04 芜湖东方汽车仪表有限公司 一种用于机油压力传感器可变电阻线圈打磨的毛粘轮部件
CN112296827A (zh) * 2019-07-29 2021-02-02 C.&E.泛音有限公司 传动部头和手持式工具机

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053305A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102008040372A1 (de) * 2008-07-11 2010-01-21 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102009017299A1 (de) * 2009-04-11 2010-10-21 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggeräte und Elektrohandwerkzeuggerät
DE102010038509A1 (de) * 2010-07-28 2012-02-02 Robert Bosch Gmbh Handwerkzeugmaschine
US9120202B2 (en) 2011-06-30 2015-09-01 Black & Decker Inc. Shield assembly for a power tool
JP5959421B2 (ja) 2011-12-14 2016-08-02 株式会社マキタ グラインダ
DE102012214834A1 (de) * 2012-08-21 2014-02-27 Robert Bosch Gmbh Schutzhaubenvorrichtung
DE102012112621A1 (de) 2012-12-19 2014-06-26 C. & E. Fein Gmbh Handwerkzeugmaschine mit abnehmbarer Schutzhaube
US9475172B2 (en) 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
USD744800S1 (en) 2014-07-16 2015-12-08 Milwaukee Electric Tool Corporation Power tool blade guard
US10201889B2 (en) * 2014-08-06 2019-02-12 Sparky Guard, LLC Fully rotatable grinder guard assembly and method for making same
EP3251791B1 (fr) 2016-05-06 2019-03-27 Black & Decker Inc. Levier réversible pour un ensemble de protection d'un outil électrique
WO2018208529A1 (fr) * 2017-05-09 2018-11-15 Dust Away LLC Enveloppe anti-poussière
USD945234S1 (en) * 2018-07-26 2022-03-08 Paul Mueller Company Guard for use with a power tool
CN111791190A (zh) * 2019-04-03 2020-10-20 南京德朔实业有限公司 多功能电动工具
CN111774654A (zh) * 2019-04-04 2020-10-16 喜利得股份公司 圆锯
KR102567445B1 (ko) * 2021-04-16 2023-08-18 주식회사 아임삭 휠커버를 갖는 그라인더

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EP0812657A1 (fr) 1996-06-13 1997-12-17 Atlas Copco Tools Ab Outil portatif à moteur
DE10259520A1 (de) 2002-12-19 2004-07-01 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
DE10343060A1 (de) 2003-09-16 2005-04-07 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube

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DE3338917A1 (de) * 1983-10-27 1985-05-09 C. & E. Fein Gmbh & Co, 7000 Stuttgart Schutzhaubenbefestigung fuer tragbare winkelschleifer
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US6464573B1 (en) * 2000-06-30 2002-10-15 Porter-Cable Corporation Guard attachment system with knurled clamp ring
DE10124439A1 (de) * 2001-05-18 2002-11-21 Bosch Gmbh Robert Handgeführtes Elektrowerkzeug mit Schutzhaube
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913898A1 (de) 1989-04-27 1990-10-31 Licentia Gmbh Einrichtung zur axialen sicherung, zum verriegeln und zum drehverstellen der schutzhaube auf dem spannhals von handwerkzeugmaschinen
EP0812657A1 (fr) 1996-06-13 1997-12-17 Atlas Copco Tools Ab Outil portatif à moteur
DE10259520A1 (de) 2002-12-19 2004-07-01 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
DE10343060A1 (de) 2003-09-16 2005-04-07 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115459A1 (fr) * 2008-03-18 2009-09-24 Robert Bosch Gmbh Machine-outil portative, en particulier meuleuse manuelle
EP2189244A2 (fr) 2008-11-20 2010-05-26 Metabowerke Gmbh Appareil de meulage d'angle doté d'un capot protecteur
DE102008059249A1 (de) 2008-11-20 2010-05-27 Metabowerke Gmbh Winkelschleifgerät mit Schutzhaube
EP2189244A3 (fr) * 2008-11-20 2010-07-28 Metabowerke GmbH Appareil de meulage d'angle doté d'un capot protecteur
DE102008059249B4 (de) * 2008-11-20 2014-09-11 Metabowerke Gmbh Winkelschleifgerät mit Schutzhaube
WO2011042460A1 (fr) * 2009-10-06 2011-04-14 Metabowerke Gmbh Outil électrique portatif à capot de protection réglable
CN102398194A (zh) * 2011-08-26 2012-04-04 芜湖东方汽车仪表有限公司 一种用于机油压力传感器可变电阻线圈打磨的毛粘轮部件
CN112296827A (zh) * 2019-07-29 2021-02-02 C.&E.泛音有限公司 传动部头和手持式工具机
EP3771518A1 (fr) * 2019-07-29 2021-02-03 C. & E. Fein GmbH Tête de transmission et machine-outil manuelle

Also Published As

Publication number Publication date
DE502006006187D1 (de) 2010-04-01
US7524239B2 (en) 2009-04-28
CN101157196A (zh) 2008-04-09
ATE457849T1 (de) 2010-03-15
US20080153404A1 (en) 2008-06-26
EP1908549B1 (fr) 2010-02-17

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