EP1908549B1 - Power tool, especially an angle grinder, with a protective cover - Google Patents

Power tool, especially an angle grinder, with a protective cover Download PDF

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Publication number
EP1908549B1
EP1908549B1 EP06021103A EP06021103A EP1908549B1 EP 1908549 B1 EP1908549 B1 EP 1908549B1 EP 06021103 A EP06021103 A EP 06021103A EP 06021103 A EP06021103 A EP 06021103A EP 1908549 B1 EP1908549 B1 EP 1908549B1
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EP
European Patent Office
Prior art keywords
flange
protective cover
hand tool
accordance
guard
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
EP06021103A
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German (de)
French (fr)
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EP1908549A1 (en
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
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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 EP06021103A priority Critical patent/EP1908549B1/en
Priority to DE502006006187T priority patent/DE502006006187D1/en
Priority to AT06021103T priority patent/ATE457849T1/en
Priority to CNA2007101615272A priority patent/CN101157196A/en
Priority to US11/867,148 priority patent/US7524239B2/en
Publication of EP1908549A1 publication Critical patent/EP1908549A1/en
Application granted granted Critical
Publication of EP1908549B1 publication Critical patent/EP1908549B1/en
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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 the features of the preamble of claim 1.
  • Such electric hand tool device is from the DE 39 13 898 A1 known.
  • 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 guard In addition to be achieved in particular by the guard that in case of destruction of the grinding tool whose parts do not hit an operator of the electric power tool.
  • the protective hood In this purpose, provision is generally made for the protective hood to cover only a limited angular range of the circular grinding tool, in general 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 is rotated by the operator into the necessary protective position, it is advantageous if the protective hood can be adjusted without tools. Only when an adjustment is not cumbersome, there is a work-fair adjustment of the guard 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 attached 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 object by an electric hand tool device having the features of claim 1.
  • the locking cam in the radial direction passes through the guard neck of the guard and so the direction of force of the locking lever also extends in the radial direction in contrast to an axial direction with respect to the output shaft in the prior art.
  • 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 actuated in this arrangement, if the user of the electric hand tool has this in the usual working position in the hand, without having to first hand over the machine to another position, in particular without having to turn the machine with the tool up, to easily operate the lever.
  • 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 in this case be effected 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 operating section can be so from the be angled lever other that easier gripping the operating 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. In this groove, the guard is guided and held in the axial direction.
  • guide elements are provided on the protective hood, which engage in the groove. The guide elements are preferably smaller in size than the locking cam. For attachment of the guard and for insertion into the groove can be provided that this is possible only in one position by the guard in the manner of a bayonet lock with the flange can be coupled.
  • 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.
  • FIG. 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 a detent lever 18, which, as in FIG. 2 can be seen, is fixed to a flange 20 of an electric hand tool device.
  • the locking lever 18 is thereby pivoted about an axis 22, which is parallel to the axis of an output shaft whose axis in FIG. 4 denoted by 24 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 base body 14 of the protective hood 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 by means of fittings (not shown), pass through the openings 44 in the flange, can be fixed to a machine housing, not shown, an electric hand tool device.
  • 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 includes in addition to the cylindrical portion 34, a flange plate 48, which essentially serves the 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.
  • the guide elements 36 have different sizes, in FIG. 1 Correspondingly configured corresponding axial grooves 50 'and 50'', so that a mounting of the protective hood and joining in the axial direction only in a certain predetermined position is possible the cylindrical portion 34 of the flange 20 is attached, that the guide elements 36 come to rest in the radial groove 38, the guard can be rotated, the guide elements 36 are guided in the radial groove and so an axial withdrawal of the guard 12 can be avoided can.
  • FIG. 2 shows FIG. 2 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.
  • FIG. 3 shows a mounted position, in which case the protective cover 12 is fixed to the flange 20.
  • the locking lever 18 is biased by a spring 52 in the locking position, so as to prevent inadvertent release of the locking cam from the opening even with vibrations during operation of the electric hand tool device.
  • FIG. 4 now shows a section along the line AA, 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.
  • FIG. 4 one additional mechanism for reducing the clearance between the guard 12 and the 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.
  • 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.

Abstract

The device has a protective cover (12) partially surrounding a grinding tool with a base body and provided with a protective cover neck that is connected with the base body. The cover is detachably fixed at a flange (20) by a locking lever (18) in a rotation position, and the locking lever engages an opening in the protective cover with a locking cam. A swiveling axis of the locking lever is arranged parallel to the output shaft, and the openings are arranged in the protective cover neck of the protective cover.

Description

Die Erfindung betrifft ein Elektrohandwerkzeuggerät, insbesondere Winkelschleifer, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to an electric hand tool device, in particular angle grinder, with the features of the preamble of claim 1.

Ein derartiges Elektrohandwerkzeuggerät ist aus der DE 39 13 898 A1 bekannt.Such electric hand tool device is from the DE 39 13 898 A1 known.

Bei Elektrohandwerkzeuggeräten, insbesondere Winkelschleifern, ist vielfach eine Schutzhaube vorgesehen, die die Aufgabe hat, die beim Arbeiten von dem rotierenden Werkzeug, z. B. Schleif- oder Trennscheibe, wegschleudernden Funken bzw. Materialpartikel vom Bediener fernzuhalten. Darüber hinaus soll insbesondere durch die Schutzhaube erreicht werden, dass im Falle einer Zerstörung des Schleifwerkzeugs dessen Teile nicht einen Bediener des Elektrohandwerkzeuggeräts treffen. Es ist hierzu im Allgemeinen vorgesehen, dass die Schutzhaube nur einen eingeschränkten Winkelbereich des kreisförmigen Schleifwerkzeugs überdeckt, und zwar in der Regel 180° des rotierenden Werkzeugs. Dies gewährt in aller Regel einen ausreichenden Schutz bei den verschiedenen Arbeitseinsätzen. Da jedoch je nach Arbeitseinsatz ein unterschiedlicher Ansatzwinkel des Schleifwerkzeugs gegeben ist, ist es vielfach erwünscht, dass die Schutzhaube verstellbar ausgestaltet ist hinsichtlich ihrer Drehposition zum Maschinengehäuse. So ist in einer Ruheposition die Schutzhaube zumeist symmetrisch zur Gehäuselängsachse auf der in Richtung des Maschinengehäuses weisenden Seite des Schleifwerkzeugs vorgesehen. Je nach Bedienposition kann jedoch auch erwünscht sein, dass andere Bereiche abgedeckt werden, und zwar in der Regel diejenigen Bereiche, die diametral gegenüber dem aktuellen Arbeitsbereich liegen.In electrical hand tool devices, especially angle grinders, 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. In addition to be achieved in particular by the guard that in case of destruction of the grinding tool whose parts do not hit an operator of the electric power tool. It For this purpose, provision is generally made for the protective hood to cover only a limited angular range of the circular grinding tool, in general 180 ° of the rotating tool. As a rule, this provides adequate protection for the various work assignments. However, since a different approach angle of the grinding tool is given depending on the work, it is often desirable that the guard is designed adjustable in terms of their rotational position to the machine housing. Thus, in a rest position, 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. However, depending on the operating position, it may also be desirable to cover other areas, typically those areas that are diametrically opposite the current work area.

Um zu erreichen, dass die Schutzhaube durch den Bediener in die notwendige Schutzposition gedreht wird, ist es vorteilhaft, wenn die Schutzhaube werkzeuglos verstellt werden kann. Nur wenn eine Verstellung nicht umständlich ist, erfolgt eine arbeitsgerechte Einstellung der Schutzhaube und damit ein sicherer Schutz des Bedieners auch bei Zerbersten eines Werkzeugs.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 when an adjustment is not cumbersome, there is a work-fair adjustment of the guard and thus a safe protection of the operator even when a tool bursts.

So offenbart beispielsweise die DE 102 59 520 A1 ein entsprechendes Elektrohandwerkzeuggerät, bei dem eine Schutzhaube vorgesehen ist, wobei hierzu an einem Spannhals des Maschinengehäuses ein Verzahnungsabschnitt ausgebildet ist, in den eine an einer Spannschelle, die an der Schutzhaube montiert wird, angeordnete Sperrklinke eingreifen kann, die unter Federkraft in Richtung auf den Verzahnungsabschnitt belastet ist. Zum Auslösen der Sperrklinke kann hierbei vorgesehen sein, dass ein Handhebel vorgesehen ist, der unmittelbar an der Spannschelle angebracht ist.For example, 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. To trigger the pawl can be provided here that a hand lever is provided which is mounted directly on the clamp.

Eine entsprechende Ausgestaltung weist den Nachteil auf, dass die Spannschelle, sofern es sich um eine Metallschelle handelt, erst an der Schutzhaube angebracht werden muss und es gegebenenfalls notwendig sein kann, die Spannschelle nachzustellen, so dass sie sicher an einem Hals der Schutzhaube festgelegt ist.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 attached to a neck of the guard.

Des Weiteren ist beispielsweise aus der DE 103 43 060 A1 ein gattungsgemäßes Elektrohandwerkzeuggerät bekannt, bei dem die Verschwenkachse des Rasthebels parallel zur Längsachse des Winkelschleifers verläuft und der Rasthebel quer zur Längsachse des Winkelschleifers angeordnet ist.Furthermore, for example, from the DE 103 43 060 A1 a generic electric hand tool device is known 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.

Dabei besteht die Schutzhaube aus zwei Elementen, nämlich einem Grundkörper sowie einer hutartigen Gestaltung, die mit dem Grundkörper verbunden ist und die in ihrem zylindrischen Anteil, nämlich dem Schutzhaubenhals, den Flansch des Elektrohandwerkzeuggeräts übergreift. Die Ausnehmungen zur Verrastung sind dabei in der Krempe des hutförmigen Elements der Schutzhaube angeordnet, wobei dies den Nachteil besitzt, dass dieser Bereich der Schutzhaube beispielsweise bei einem Zerbersten des Werkzeugs stärker belastet ist und es so zu einem unfreiwilligen Lösen der Arretierung kommen kann.In this case, 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.

Aus der EP 0 812 657 A1 ist ein Handwerkzeuggerät bekannt, bei dem der Rasthebel linear verschiebbar und nicht verschwenkbar ist.From the EP 0 812 657 A1 is a hand tool known, in which the locking lever is linearly displaceable and not pivotable.

Der Erfindung stellt sich ausgehend von diesem Stand der Technik die Aufgabe, ein Elektrohandwerkzeuggerät mit einer Schutzhaube bereitzustellen, die einfach mit dem Elektrohandwerkzeuggerät verbindbar ist und die eine gute Sicherheit des Benutzers auch bei zerberstendem Werkzeug bietet.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.

Die Erfindung löst diese Aufgabe durch ein Elektrohandwerkzeuggerät mit den Merkmalen des Anspruchs 1.The invention solves this object by an electric hand tool device having the features of claim 1.

Durch eine entsprechende Anordnung wird erreicht, dass der Rastnocken in radialer Richtung den Schutzhaubenhals der Schutzhaube durchgreift und so die Kraftrichtung des Rasthebels ebenfalls in radialer Richtung im Gegensatz zu einer axialen Richtung bezüglich der Abtriebsachse im Stand der Technik verläuft. Auf diese Weise wird erreicht, dass bei einem zerberstenden Werkzeug die Kraft der sich lösenden Werkzeugteile im Wesentlichen quer zur Verrastungsrichtung auf die Schutzhaube auftrifft und es so weitgehend vermieden werden kann, dass es zu einem unbeabsichtigten Lösen der Drehposition der Schutzhaube in Bezug auf das Maschinengehäuse kommt.By a corresponding arrangement it is achieved that the locking cam in the radial direction passes through the guard neck of the guard and so the direction of force of the locking lever also extends in the radial direction in contrast to an axial direction with respect to the output shaft in the prior art. In this way it is achieved that, in a bursting tool, the force of the loosening tool parts impinges on the guard substantially transversely to the Verrastungsrichtung and it can be largely avoided that there is an unintentional release of the rotational position of the guard with respect to the machine housing ,

Darüber hinaus besitzt die Anordnung des Rasthebels derart, dass eine Verschwenkachse parallel zur Abtriebswelle angeordnet ist, den Vorteil einer besonders ergonomischen Verschwenkbarkeit der Schutzhaube. Der Hebel kann bei dieser Anordnung betätigt werden, wenn der Benutzer des Elektrohandwerkzeuggeräts dieses in der üblichen Arbeitsposition in der Hand hat, ohne beispielsweise die Maschine zunächst in eine andere Position übergeben zu müssen, insbesondere ohne die Maschine mit dem Werkzeug nach oben drehen zu müssen, um den Hebel problemlos betätigen zu können.In addition, 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 actuated in this arrangement, if the user of the electric hand tool has this in the usual working position in the hand, without having to first hand over the machine to another position, in particular without having to turn the machine with the tool up, to easily operate the lever.

Eine einfache Verstellung der Drehposition führt dazu, dass der Benutzer eine entsprechende Einstellung eher gewillt ist vorzunehmen. Insbesondere ermöglicht eine parallel zur Abtriebswelle verlaufende Schwenkachse auch ein Öffnen der Verrastung und gleichzeitig ein Verdrehen der Schutzhaube mit einer Hand, so dass ein Ablegen des Elektrohandwerkzeuggeräts nicht notwendig wird, um die Schutzhaube in eine weitere Position zu verstellen.A simple adjustment of the rotational position results in the user being more willing to make a corresponding adjustment. In particular, allows a parallel to the output shaft extending pivot axis also opening the latch and at the same time twisting the guard with one hand, so that a drop of the electric power tool is not necessary to adjust the guard in a further position.

Darüber hinaus bietet eine solche Gestaltung herstellungstechnische Vorteile, da der Schutzhaubenhals zur Einbringung von Führungselementen einer Bearbeitung unterzogen werden muss und so die Öffnungen im gleichen Bearbeitungsschritt vorgesehen werden können.In addition, such a design provides manufacturing advantages, since the guard neck must be subjected to the introduction of guide elements machining and so the openings in the same Processing step can be provided.

Dabei ist eine Vorsehung der Rastverbindung in der Schutzhaube anstelle im Getriebeflansch vorteilhaft, da dieser in aller Regel aus einem stabileren Material als der Getriebeflansch besteht und somit auch im Fall eines Zerbrechens des Werkzeuges die Schutzhaube sicher in Position bleibt. Darüber hinaus bietet der Hebel am Flansch den Vorteil eines erleichterten Schutzhaubenwechsels, wobei die Schutzhauben selber weniger aufwändig gestaltet sein müssen.In this case, 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. In addition, the lever on the flange offers the advantage of a facilitated guard change, the guard itself must be designed less expensive.

Dabei ist nach einer bevorzugten Ausgestaltung vorgesehen, dass der Rasthebel in radialer Richtung auf einen Hals des Flansches vorgespannt ist. Die Vorspannung kann hierbei insbesondere mittels eines Federelementes erfolgen, wobei sich das Federelement ebenfalls am Flansch abstützen kann. Durch die Feder wird erreicht, dass der Rasthebel sich selbsttätig immer wieder in eine Rastposition zurückbewegt. Entgegen der Federkraft kann der Rasthebel dann von einem Bediener aus einer Rastposition, in der der Rastnocken die Öffnung im Hals der Schutzhaube durchgreift, herausbewegt werden und die Schutzhaube kann bezüglich ihrer Lage zum Maschinengehäuse verdreht werden. Sobald der Verdrehvorgang eingeleitet ist, kann der Hebel losgelassen werden und er rastet dann beim Erreichen der nächsten Öffnung und somit der nächsten diskreten Drehposition bezüglich des Maschinengehäuses in die nächste Öffnung ein und fixiert so die Schutzhaube hinsichtlich ihrer Lage.It is provided according to a preferred embodiment, that the locking lever is biased in the radial direction on a neck of the flange. The bias can in this case be effected in particular by means of a spring element, wherein the spring element can also be supported on the flange. By the spring is achieved that the locking lever automatically moves back again into a locked position. Contrary to the spring force of the locking lever can then be moved by an operator from a detent position in which the locking cam passes through the opening in the neck of the guard, and the guard can be rotated with respect to their position to the machine housing. Once the twisting process is initiated, the lever can be released and then it locks on reaching the next opening and thus the next discrete rotational position with respect to the machine housing in the next opening, thus fixing the guard with respect to their location.

Die Feder kann dabei lose eingelegt werden und wird durch das Zusammenfügen von Getriebeflansch und Gehäuse des Elektrohandwerkzeuggerätes hinsichtlich der Lage fixiert.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.

Nach einer bevorzugten Ausführungsform kann des Weiteren vorgesehen sein, dass der Rasthebel an seinem der Verschwenkachse abgewandten Ende einen Betätigungsabschnitt aufweist. Dieser Betätigungsabschnitt kann dabei so vom übrigen Hebel abgewinkelt sein, dass ein leichteres Ergreifen des Betätigungsabschnitts und damit des Hebels ermöglicht wird. Insbesondere kann der Betätigungsabschnitt im Hinblick auf die Abtriebswelle radial nach außen abgebogen sein, um so ein leichtes Ergreifen zu ermöglichen.According to a preferred embodiment may further be provided that the locking lever has an actuating portion at its end remote from the pivot axis. This operating section can be so from the be angled lever other that easier gripping the operating portion and thus the lever is made possible. In particular, the actuating portion may be bent radially outwardly with respect to the output shaft so as to allow easy gripping.

Es kann dabei weiterhin vorgesehen sein, dass der Rastnocken mittig zwischen Verschwenkachse und Betätigungsabschnitt angeordnet ist. Durch eine derartige Anordnung kann ein ausreichende Festlegung des Rastnockens in der Öffnung gegeben sein und gleichzeitig können die Betätigungskräfte so eingestellt werden, dass auch eine Einhandbedienung ermöglicht ist.It may further be provided that the locking cam is arranged centrally between the pivot axis and the actuating portion. By such an arrangement, a sufficient fixing of the locking cam can be given in the opening and at the same time, the actuating forces can be adjusted so that a one-hand operation is possible.

Darüber hinaus ermöglicht eine federbelastete Festlegung des Rastnockens, der die Öffnung in der Schutzhaube durchgreift einen Ausgleich eventuell auftretenden Spiels der Schutzhaube zum Flansch. Ferner kann vorgesehen sein, dass die Position des Rasthebels sowie die Form des Rastnockens so gewählt sind, dass sich die Rastnocke im Falle eines Zerberstens des Werkzeugs in der Öffnung des Schutzhaubenhalses verkeilt und so ein unbeabsichtigtes Lösen weiter vermieden werden kann.In addition, 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.

Hierzu kann insbesondere vorgesehen sein, dass der Rastnocken sich an einem Vorsprung am Flansch abstützt in Umfangsrichtung bzw. besonders bevorzugt in eine hierfür vorgesehene Aussparung am Getriebeflansch einrastet. Auf diese Weise muss im Zerstörfall die Kraft zur Fixierung der Schutzhaube nicht nur über den Hebel aufgefangen werden, sondern kann auch in den Rastnocken selber eingeleitet werden, der diese dann aufnimmt.For this purpose, it can be provided, in particular, that 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. In this way, in the case of destruction, the force for fixing the protective hood must not only be caught by the lever, but can also be introduced into the locking cam itself, which then absorbs it.

Dabei kann vorgesehen sein, das der Flansch lösbar mit dem Maschinengehäuse verbindbar oder einstückig mit diesem verbunden, insbesondere unmittelbar an dieses angeformt sein kann.It can be provided that the flange can be detachably connected to the machine housing or integrally connected thereto, in particular can be formed directly on this.

Weiterhin ist vorgesehen, dass der Flansch eine Nut aufweist, die insbesondere von dessen dem Werkzeug zugewandten freien Ende so weit beabstandet ist, dass ein ausreichender axialer Abstand zwischen der Schutzhaube und dem Werkzeug gegeben ist. In dieser Nut wird die Schutzhaube geführt und in axialer Richtung gehalten. Hierzu kann vorgesehen sein, dass an der Schutzhaube Führungselemente vorgesehen sind, die in die Nut eingreifen. Die Führungselemente sind vorzugsweise kleiner dimensioniert als der Rastnocken. Zur Anbringung der Schutzhaube und zum Einfügen in die Nut kann vorgesehen sein, dass dies nur in einer Position möglich ist, indem die Schutzhaube in der Art eines Bajonettverschlusses mit dem Flansch koppelbar ist. Hierzu sind in axialer Richtung verlaufende Nuten vorgesehen, in die die Führungselemente beim Aufsetzen der Schutzhaube auf den Flansch eingebracht werden, so dass die Schutzhaube dann in Richtung auf das Gehäuse auf den Flansch aufgeschoben werden kann, bis die Führungselemente in der radial verlaufenden Nut zu liegen kommen und dort dann verdreht werden können, so dass ein axiales Abziehen verhindert wird. Die axialen Nuten sind dabei verschieden dimensioniert und geben so die Position beim Zusammenbau vor.It is further provided that 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. In this groove, the guard is guided and held in the axial direction. For this purpose, it may be provided that guide elements are provided on the protective hood, which engage in the groove. The guide elements are preferably smaller in size than the locking cam. For attachment of the guard and for insertion into the groove can be provided that this is possible only in one position by the guard in the manner of a bayonet lock with the flange can be coupled. For this purpose, 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.

Darüber hinaus kann vorgesehen sein, dass ein Federelement am Flansch anbringbar ist, über das die Schutzhaube in axialer Richtung gegen einen Anschlag, der vorzugsweise durch den Rand der Nut gebildet wird, im Flansch vorspannbar ist. Hierzu kann vorgesehen sein, dass eine in axialer Richtung gewellte Feder zwischen Schutzhaube und Flansch angeordnet wird.In addition, it can be provided that 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. For this purpose, it may be provided that a spring corrugated in the axial direction is arranged between the protective hood and the flange.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den übrigen Anmeldungsunterlagen. Die Erfindung soll im Folgenden anhand einer Zeichnung näher erläutert werden. Dabei zeigen:

Figur 1
eine Schutzhaube sowie einen Rasthebel;
Figur 2
einen Flansch eines Elektrohandwerkzeuggeräts mit daran angeordnetem Rasthebel;
Figur 3
eine perspektivische Darstellung der am Flansch angeordneten Schutzhaube und
Figur 4
einen Schnitt entlang der Linie A-A in Figur 3.
Further advantages and features of the invention will become apparent from the remaining application documents. The invention will be explained in more detail below with reference to a drawing. Showing:
FIG. 1
a protective hood and a locking lever;
FIG. 2
a flange of a power tool with arranged thereon locking lever;
FIG. 3
a perspective view of the arranged on the flange guard and
FIG. 4
a section along the line AA in FIG. 3 ,

Figur 1 zeigt eine Schutzhaube, die in ihrer Gesamtheit mit dem Bezugszeichen 12 versehen ist. Die Schutzhaube umfasst einen Grundkörper 14 sowie einen Schutzhaubenhals 16. Der Schutzhaubenhals 16 kann einstückig mit dem Schutzhaubengrundkörper 14 verbunden sein. Alternativ sind jedoch auch andere Verbindungsmöglichkeiten, wie Kleben, Nieten, Schweißen oder Löten möglich. Es kann dabei vorgesehen sein, dass der Grundkörper 14 aus einem anderen Material als der Schutzhaubenhals 16 besteht. Auf diese Weise können dann beide Teile der Schutzhaube 12 bezüglich ihrer Festigkeit optimal dimensioniert werden. FIG. 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.

Des Weiteren zeigt Figur 1 einen Rasthebel 18, der, wie in Figur 2 gesehen werden kann, an einem Flansch 20 eines Elektrohandwerkzeuggeräts festgelegt ist. In Figur 1 ist zur besseren Erkennbarkeit der einzelnen Elemente der Flansch 20 als solches weggelassen. Der Rasthebel 18 wird dabei um eine Achse 22 verschwenkt, die parallel zur Achse einer Abtriebswelle, deren Achse in Figur 4 mit 24 bezeichnet ist, verläuft. Am freien Ende des Rasthebels 18, das der Verschwenkachse 22 abgewandt ist, ist ein Betätigungsabschnitt 26 vorgesehen, an dem der Bediener eines entsprechenden Elektrohandwerkzeuges zum Betätigen des Rasthebels 18 angreift. Der Betätigungsabschnitt 26 kann hier zur besseren Haltbarkeit mit einer Profilierung 28 versehen sein, um ein Abrutschen vom Rasthebel 18 zu verhindern.Further shows FIG. 1 a detent lever 18, which, as in FIG. 2 can be seen, is fixed to a flange 20 of an electric hand tool device. In FIG. 1 is omitted for better visibility of the individual elements of the flange 20 as such. The locking lever 18 is thereby pivoted about an axis 22, which is parallel to the axis of an output shaft whose axis in FIG. 4 denoted by 24 runs. At the free end of the locking lever 18, which faces away from the pivot axis 22, 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.

Der Grundkörper 14 der Schutzhaube 12 besitzt dabei eine topfförmige Gestaltung mit einem parallel zu einem Werkzeug, insbesondere einer Schleif- oder Trennscheibe angeordneten Bodenabschnitt 30 sowie einem um das Werkzeug herumgeführten im Wesentlichen zylindrischen Abschnitt 32. Dabei überdeckt der Grundkörper 14 der Schutzhaube 12 im Wesentlichen 180° eines entsprechenden Werkzeugs.The base body 14 of the protective hood 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. In this case, the base body 14 of the protective cover 12 substantially covers 180 ° of a corresponding tool.

Der Schutzhaubenhals 16 dient dabei zur Festlegung am Flansch 20, indem er dort einen entsprechenden zylindrischen Abschnitt 34 übergreift. Der Schutzhaubenhals besitzt eine im Wesentlichen zylindrische Form, wobei an der Innenseite des Schutzhaubenhalses 16 Führungselemente 36 angeordnet sind, die zur drehbaren Führung der Schutzhaube am zylindrischen Abschnitt 34 des Flansches dienen und in eine Nut 38 im montierten Zustand eingreifen und so ein axiales Lösen der Schutzhaube 12 vom Flansch 20 verhindern. Darüber hinaus besitzt der Schutzhaubenhals 16 Öffnungen 40, die im Wesentlichen über einen Teil des Umfangs oder über den gesamten Umfang der Schutzhaube verteilt angeordnet sein können und zur Fixierung und Ansteuerung der diskreten Drehpositionen der Schutzhaube 12 im Hinblick auf ein Elektrohandwerkzeuggerät dienen. Dabei durchgreift ein Rastnocken 42 eine der Öffnungen 40 des Schutzhaubenhalses und fixiert so die Drehposition der Schutzhaube 12 relativ zum Flansch. Der Rastnocken ist hierbei einstückig am Rasthebel 18 angeformt und so ausgelegt, dass er sich im Belastungsfall in der Öffnung 40 verkeilt.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. In addition, 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. In this case, 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.

Durch die Verteilung der Öffnungen 40 über den Umfang des Schutzhaubenhalses 16 können eine vorgegebene Anzahl von Positionen der Schutzhaube eingenommen werden.Due to the distribution of the openings 40 over the circumference of the protective hood neck 16, a predetermined number of positions of the protective hood can be assumed.

Figur 2 zeigt nun den Flansch 20, der mittels Verschraubungen (nicht dargestellt), die Öffnungen 44 im Flansch durchgreifen, an einem nicht dargestellten Maschinengehäuse eines Elektrohandwerkzeuggeräts fixiert werden kann. Dabei weist der Flansch eine zentrale Öffnung 46 auf, durch die sich die Abtriebswelle des Elektrohandwerkzeuggeräts, die ebenfalls nicht dargestellt ist, erstreckt. Der Flansch umfasst dabei neben dem zylindrischen Abschnitt 34 eine Flanschplatte 48, die im Wesentlichen der Befestigung am Elektrohandwerkzeug dient. FIG. 2 now shows the flange 20, which by means of fittings (not shown), pass through the openings 44 in the flange, can be fixed to a machine housing, not shown, an electric hand tool device. In this case, 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 includes in addition to the cylindrical portion 34, a flange plate 48, which essentially serves the attachment to the electric hand tool.

Der zylindrische Abschnitt 34 des Flansches 20 besitzt an seinem äußeren Umfang axiale Nuten 50, in die beim axialen Aufstecken der Schutzhaube 20 die Führungselemente 36 eingeführt werden. Die Führungselemente 36 besitzen dabei verschiedene Größen, wobei in Figur 1 Führungselemente 36' und 36" erkennbar sind. Hierzu korrespondieren entsprechend ausgestaltete axiale Nuten 50' und 50'', so dass ein Aufsetzen der Schutzhaube und Fügen in axialer Richtung nur in einer bestimmten vorgegebenen Position möglich ist. Sobald die Schutzhaube 12 dann so weit auf den zylindrischen Abschnitt 34 des Flansches 20 aufgesteckt ist, dass die Führungselemente 36 im Bereich der radialen Nut 38 zu liegen kommen, kann die Schutzhaube verdreht werden, wobei die Führungselemente 36 in der radialen Nut geführt sind und so ein axiales Abziehen der Schutzhaube 12 vermieden werden kann.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. The guide elements 36 have different sizes, in FIG. 1 Correspondingly configured corresponding axial grooves 50 'and 50'', so that a mounting of the protective hood and joining in the axial direction only in a certain predetermined position is possible the cylindrical portion 34 of the flange 20 is attached, that the guide elements 36 come to rest in the radial groove 38, the guard can be rotated, the guide elements 36 are guided in the radial groove and so an axial withdrawal of the guard 12 can be avoided can.

Darüber hinaus zeigt Figur 2 den Rasthebel 18, der nach Aufsetzen der Schutzhaube 12 mit seinem nicht zu erkennenden Rastnocken 42 eine Öffnung 40 in der Schutzhaube durchgreift und so die Schutzhaube 12 in einer Drehposition arretiert.In addition, shows FIG. 2 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.

Figur 3 zeigt eine montierte Position, wobei hier die Schutzhaube 12 am Flansch 20 festgelegt ist. Der Rasthebel 18 ist dabei über eine Feder 52 in der Rastposition vorgespannt, um so auch bei Vibrationen im Betrieb des Elektrohandwerkzeuggeräts ein unbeabsichtigtes Lösen des Rastnockens aus der Öffnung zu verhindern. FIG. 3 shows a mounted position, in which case the protective cover 12 is fixed to the flange 20. The locking lever 18 is biased by a spring 52 in the locking position, so as to prevent inadvertent release of the locking cam from the opening even with vibrations during operation of the electric hand tool device.

Figur 4 zeigt nun einen Schnitt entlang der Linie A-A, wobei der Eingriff des Rastnockens 42 durch eine Öffnung 40 in der Schutzhaube 12 zu erkennen ist und wobei der Rastnocken 42 in der eingerasteten Position gegen den zylindrischen Abschnitt 34 des Flansches 20 anliegt. Des Weiteren zeigt Figur 4 einen zusätzlichen Mechanismus zur Reduzierung des Spiels zwischen Schutzhaube 12 und Flansch 20. Hierzu ist zwischen den beiden Elementen eine Feder 54 angebracht, die eine in axialer Richtung gewellte Form besitzt und so das Spiel zwischen Flansch 20 und Schutzhaube 12 ausgleicht. Dabei sorgt ebenfalls die Feder 52, die den Rasthebel 18 gegen die Schutzhaube 12 sowie den Flansch anlegt, für einen Spielausgleich in radialer Richtung. FIG. 4 now shows a section along the line AA, 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. Further shows FIG. 4 one additional mechanism for reducing the clearance between the guard 12 and the flange 20. For this purpose, 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.

Darüber hinaus bietet eine entsprechende Gestaltung neben der einfachen Verschwenkbarkeit der Schutzhaube, gegebenenfalls sogar in Einhandbedienung, den Vorteil, dass die Schutzhaube sich nur mittels mehrerer Handgriffe vom Flansch 20 lösen lasst, so dass so die Wahrscheinlichkeit des Entfernens der Schutzhaube durch einen Bediener gesenkt werden kann.In addition, a corresponding design in addition to the simple pivoting of the guard, possibly even in one-handed operation, the advantage that the guard can be solved only by a plurality of handles from the flange 20, so that the probability of removal of the guard can be lowered by an operator ,

Auch im Fall eines Zerberstens eines Werkzeugs sorgt eine entsprechende Anordnung für ein sicheres Verbleiben in der voreingestellten Drehposition und schützt so den Bediener des Elektrohandwerkzeuggeräts.Even in the case of a bursting of a tool, a corresponding arrangement ensures a safe stay in the preset rotational position, thus protecting the operator of the electric hand tool device.

Darüber hinaus kann bestehendes Zubehör weiter verwendet werden und insbesondere ist eine nachträgliche Montage an bisher üblichen Flanschen von Elektrohandwerkzeuggeräten der gattungsgemäßen Art möglich.In addition, existing accessories can continue to be used and in particular a subsequent assembly of previously common flanges of electrical hand tool devices of the generic type is possible.

Claims (8)

  1. Electrical hand tool, in particular an angle grinder, with a machine housing to accommodate a motor which provides the drive to a drive shaft and a drive shaft connected to it via an angular transmission, which shaft can hold a grinding tool at its free end, whereby a protective cover (12), at least partially surrounding the grinding tool with a base body (14), is provided with a protective cover rim (16) connected to the base body (14), by means of which it can be detachably connected to a flange (20) arranged on the machine housing and can be set rotationally in discrete positions, whereby the protective cover (12) can be set and locked in an angular position by means of a catch lever (18) on the flange (20) and, to do this, the catch lever (18) engages in an opening (40) in the protective cover (12) with a catch cam (42), whereby a pivot axle (22) of the catch lever (18) is arranged parallel to the drive shaft and the openings (40) are arranged in the protective cover rim (16) of the protective cover (12), characterised in that the flange (20) has a groove (38) in which the protective cover (12) can be guided rotationally and is retained in the axial direction.
  2. Electrical hand tool in accordance with claim 1, characterised in that the catch lever (18) is pre-tensioned in the radial direction in relation to the flange (20).
  3. Electrical hand tool in accordance with claim 1 or 2, characterised in that the catch lever (18) has an actuating section (26) at its end furthest from the pivot axle (22).
  4. Electrical hand tool in accordance with one of the claims 1 to 3, characterised in that the catch cam (42) is arranged centrally between the pivot axis (22) and the actuating section (26).
  5. Electrical hand tool in accordance with one of the claims 1 to 4, characterised in that the catch cam (42) engages in a recess on the flange (20) or is supported on a projection on the flange (20) in order to lock the protective cover (12).
  6. Electrical hand tool in accordance with one of the claims 1 to 5, characterised in that the flange (20) is detachably connected to the machine housing or is connected to it to form a single component.
  7. Electrical hand tool in accordance with one of the claims 1 to 6, characterised in that the protective cover (12) can be connected to the flange (20) in an axial direction by means of a bayonet lock.
  8. Electrical hand tool in accordance with one of the claims 1 to 7, characterised in that a spring element (54) can be attached to the flange (20), by means of which the protective cover (12) can be pre-tensioned in the axial direction against a stop on the flange (20).
EP06021103A 2006-10-07 2006-10-07 Power tool, especially an angle grinder, with a protective cover Active EP1908549B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06021103A EP1908549B1 (en) 2006-10-07 2006-10-07 Power tool, especially an angle grinder, with a protective cover
DE502006006187T DE502006006187D1 (en) 2006-10-07 2006-10-07 Electric hand tool, in particular an angle grinder with a protective hood
AT06021103T ATE457849T1 (en) 2006-10-07 2006-10-07 HAND-HELD ELECTRIC TOOL, PARTICULARLY AN ANGLE GRINDER WITH A PROTECTIVE HOOD
CNA2007101615272A CN101157196A (en) 2006-10-07 2007-09-29 Power tool, especially an angle grinder, with a protective cover
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 (en) 2006-10-07 2006-10-07 Power tool, especially an angle grinder, with a protective cover

Publications (2)

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

Family

ID=37781910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06021103A Active EP1908549B1 (en) 2006-10-07 2006-10-07 Power tool, especially an angle grinder, with a protective cover

Country Status (5)

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

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DE10343060A1 (en) 2003-09-16 2005-04-07 Robert Bosch Gmbh Protective cowl for hand power tool especially for angle grinder has an adjustable fitting with a finger pressure ratchet lever engaging ratchet holes in cowl mounting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012112621A1 (en) 2012-12-19 2014-06-26 C. & E. Fein Gmbh Hand tool e.g. angle grinder, has fuse elements cooperated together at actuator and clamping portion in each working position by positively locking protective cover at spindle neck movable in axial retaining element on spindle neck

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DE502006006187D1 (en) 2010-04-01
CN101157196A (en) 2008-04-09
EP1908549A1 (en) 2008-04-09
US7524239B2 (en) 2009-04-28
US20080153404A1 (en) 2008-06-26
ATE457849T1 (en) 2010-03-15

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