EP1567308B1 - Electric hand-held machine tool - Google Patents

Electric hand-held machine tool Download PDF

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Publication number
EP1567308B1
EP1567308B1 EP03811719A EP03811719A EP1567308B1 EP 1567308 B1 EP1567308 B1 EP 1567308B1 EP 03811719 A EP03811719 A EP 03811719A EP 03811719 A EP03811719 A EP 03811719A EP 1567308 B1 EP1567308 B1 EP 1567308B1
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EP
European Patent Office
Prior art keywords
housing
lamp housing
angle
lamp
electric power
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.)
Expired - Lifetime
Application number
EP03811719A
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German (de)
French (fr)
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EP1567308A1 (en
Inventor
Helmut Wanek
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP1567308A1 publication Critical patent/EP1567308A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/18—Devices for illuminating the head of the screw or the nut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/021—Construction of casings, bodies or handles with guiding devices

Definitions

  • the invention is based on an electric hand tool according to the preamble of claim 1.
  • the electric power tool of the invention with the features of claim 1 has the advantage that the light is always adjustable to the changed position of the working tool relative to the machine housing by the rotatability of the arranged at the working end of the machine housing lighting device, so that in each working position of the angle working head the workplace lit maximally can be. This creates sufficient visibility for the installer even in hard to reach, narrow places.
  • the lighting device is associated with the working positions of the angle working head matching, discrete rotational positions.
  • This structural measure has the advantage that in each working position of the angle working head automatically optimal illumination of the job is guaranteed, which requires no correction.
  • the lighting device has a slipped onto the machine housing, hollow cylindrical lamp housing and a light source, which is accommodated in a lamp housing formed in the lamp housing, the shaft axis is aligned at an acute angle to the housing axis and the shaft opening facing the angle working head.
  • the discrete rotational positions of the lighting device are realized by corresponding rotation of the lamp housing on the machine housing, wherein according to an advantageous embodiment of the invention in each rotational position the lamp housing between the inner wall of the lamp housing and the outer wall of the machine housing is positive engagement.
  • the lamp housing is composed of two, preferably mirror-symmetrically designed housing shells which lie against one another along a plane extending through the housing axis.
  • the positive engagement is realized by at least two mutually corresponding, each formed on the inner wall of the lamp housing and on the outer wall of the machine housing multi-edge, wherein the number of edges of the multiple edge corresponds to the number of possible working positions of the angle working head.
  • the multi-edge are each designed as an octagon, resulting in a total of eight rotational positions of the lamp housing, of which one of a working position of the angle working head is permanently assigned.
  • the two housing shells are held together by clamping means. By loosening the clamping means, the lamp housing can be placed on the polygon of the machine housing. After setting the desired rotational position, the two housing shells are connected again by the clamping means.
  • the angle wrench shown in Fig. 1 in part and partially shown as an example of a general electric hand tool with an adjustable angle working head has a machine housing 10, which has a receptacle 11 for a Winkeischraubkopf 12 at its remote from a handle for holding the angle wrench working end.
  • the partially protruding from the machine housing 10 receptacle 11 is inserted with its remote from the Winkelschraubkopf 12, the rear end in the machine housing 10 and screwed into this.
  • the receptacle 11 has a plurality of frontally, in the exemplary embodiment four, pressed-in cylindrical pins 13, and the Winkelschraubkopf 12 has at its the cylinder pins 13 facing front end circumferentially offset recesses 14 (in the embodiment, a total of eight), in the attached Winkelschraubkopf 12, the cylindrical pins thirteenth engage axially and positively.
  • Cylindrical pins 13 and recesses 14 are each equidistant over arranged distributed around the circumference, wherein the rotational angular distance of the cylindrical pins 13 from each other twice the angular distance of the recesses 14 corresponds to each other, so that in each case four cylinder pins 13 engage in four of the total of eight recesses 14 in the Winkelschraubkopf 12.
  • Winkelschraubkopfs 12 of the cylinder pins 13 After subtracting the Winkelschraubkopfs 12 of the cylinder pins 13, this can in each case a rotation angle corresponding to the distance between two recesses 14 from each other, ie in the exemplary embodiment by 45 °, rotated and pushed with its recesses 14 back to the cylinder pins 13.
  • the Winkelschraubkopf 12 can be arranged offset in eight rotational positions relative to the housing axis 101 of the machine housing 10, so that the angle wrench with unchanged position of the machine housing 10 has a total of eight different working positions for the screwing. Each screw position is offset from the other by 45 ° rotation angle.
  • a union nut 15 is provided, which is screwed onto an external thread of the receptacle 11.
  • Winkelschraubkopf 12 consisting of two intermeshing bevel gears existing angle gear 16 is arranged, of which the one bevel gear 17 on a drive shaft 18 and the other bevel gear 19 is rotatably seated on a drive shaft 18 at right angles aligned output shaft 20.
  • Drive shaft 18 and output shaft 20 are rotatably mounted in Winkelschraubkopf 12.
  • the drive shaft 18 is driven by a not shown here, recorded in the machine housing 10 electric motor with the interposition of a transmission gear and a torque limiter. With the output shaft 20, a chuck 21 for receiving a screwing is rotatably connected.
  • the angle wrench has an illumination device 22 for illuminating the screw point during a screwing operation.
  • the lighting device 22 comprises a hollow cylindrical lamp housing 23, in a lamp shaft 231 is formed, and a light source in the form of an LED 24, which is inserted into the lamp shaft 231 and a power cable 33 to a power source, for. B. the battery of the designed as a screwdriver angle wrench is connected.
  • the lamp housing 23 is placed on the working end of the machine housing 10 and clamped so that it is not removable axially.
  • the lamp shaft 231 is formed on one side of the lamp housing 23, that the shaft axis 231 a at an acute angle to the housing axis 101 of the machine housing 10 (and the axis of the coaxially arranged lamp housing 23) extends and the shaft opening 231 b, from which the light the LED 24 exits, the Winkelschraubkopf 12 points.
  • the lamp housing 23 is adjustable on the machine housing 10 in discrete rotational positions, wherein each one rotational position coincides with one of the working positions of the Winkelschraubkopfs 12.
  • the discrete rotational positions are in each case predetermined by positive engagement between the machine housing 10 and the lamp housing 23.
  • the lamp housing 23 shown in various views and sections in FIGS. 2 to 7 is composed of two preferably made of plastic housing shells 25, 26 which abut one another along a plane passing through the housing axis 101 of the machine housing 10 (FIGS. 4 and 5).
  • each housing shell 25, 26 of the lamp shaft 231 is formed half each.
  • an octagon 27 (FIGS. 3 and 6) is formed, which with a same, in FIG. 1 indicated octagon 34 on the outer wall of the machine housing 10 corresponds.
  • the octagon 27 and corresponding to the octagon 34 of the machine housing 10 have only a small axial depth or width.
  • the octagon 27 is formed in each half in the housing shell 25 and in the housing shell 26.
  • the two housing shells 25, 26 After placing the two housing shells 25, 26 on the machine housing 10, the two housing shells 25, 26 releasably connected to each other by clamping means.
  • clamping means in the exemplary embodiment a snap ring 28 and a preferably made of plastic clips ring 29 are provided, which enclose the two housing shells 25, 26.
  • FIG. 1 while the snap ring 28 is inserted in an arranged on the remote from the Winkelschraubkopf 12, rear end of the lamp housing 23 annular groove 30 while the clip ring 29 on one on the other, the Winkelschraubkopf 12 facing the end of the lamp housing 23 frontally molded axially projecting annular ridge 31 is clipped.
  • the lamp shaft 231 is located with the LED 24 in the lower region of the machine housing 10, so that arranged in the housing shaft 231.
  • LED 24 automatically illuminates an inserted into the chuck 21 of the Winkelschraubkopfs 12 screwing. If the Winkelschraubkopf 12 pivoted with unchanged orientation of the machine housing 10 to the housing axis 101 of the machine housing 10, for which after the above executed the union nut 15 solved, the Winkelschraubkopf 12 pivoted about the housing axis 101 of the machine housing 10 and the nut 15 must be screwed again, so then the lamp housing 23 must be rotated by the same angle of rotation.
  • octagon 32 formed with a small axial depth, which corresponds to a formed on the same position on the outer wall of the machine housing 10 octagon 35 (Fig. This has the advantage that the lamp housing 23 is clamped at the front and rear end evenly on each octagon 34, 35 on the machine housing 10.
  • the embodiment of the positive connection between the machine housing 10 and the lamp housing 23 depends on the number of possible working positions of the Winkelschraubkopfs 12. If this example only four offset by 90 ° working positions, the positive engagement by mutually corresponding Vierkante on the outer wall of the machine housing 10 and Interior wall of the lamp housing 23 realized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Elektrohandwerkzeugmaschine nach dem Oberbegriff des Anspruchs 1.The invention is based on an electric hand tool according to the preamble of claim 1.

Bei einer als Winkelschrauber ausgebildeten Elektrohandwerkzeugmaschine dieser Art ist die Beleuchtungsvorrichtung zur Beleuchtung der Schraubstelle in dem Maschinengehäuse integriert und die Beleuchtung so eingestellt, daß in der überwiegend genutzten Arbeitsposition des Winkelschraubers bei Ansetzen des Schraubwerkzeugs an die Schraubstelle das Licht der Beleuchtungsvorrichtung auf die Schraubstelle fällt und diese einschließlich ihrer Umgebung ausleuchtet. Es gibt jedoch auch Arbeitsfälle, in denen infolge vorgegebener, beengter Raumverhältnisse der Winkelschraubkopf relativ zum Maschinengehäuse verdreht werden muß, um das Schraubwerkzeug an die Schraube ansetzen zu können. In diesem Fall ist die Beleuchtung der Schraubstelle nicht oder nicht ausreichend gegeben, so daß der Arbeitsvorgang erheblich beeinträchtigt wird. Durch US 5,207,528 ist ein Winkelschrauber bekannt, dessen Winkelarbeitskopf um eine gegenüber der Gehäuseachse abgewinkelt ausgerichtete Abtriebswelle zum Antrieb eines Werkzeug in wählbaren Positionen verriegelbar festlegbar ist. Damit kann die jeweils optimale Arbeitsposition für unterschiedliche Arbeitsfälle eingestellt werden, wobei diese Elektrohandwerkzeugmaschine über keine Beleuchtungsvorrichtung zum Beleuchten der Arbeitsstelle des Werkzeugs verfügt.In an electric hand tool machine designed as an angle wrench this type of lighting device is integrated to illuminate the screw in the machine housing and the lighting adjusted so that in the predominantly used working position of the angle wrench when attaching the screwing to the screw the light of the lighting device falls on the screw and this including their surroundings. However, there are also work cases in which, due to predetermined, cramped spatial conditions of the Winkelschraubkopf must be rotated relative to the machine housing in order to put the screwing on the screw can. In this case, the lighting of the screw is not or not sufficiently given, so that the operation is significantly impaired. By US 5,207,528 an angle wrench is known, the angle working head about a relative to the housing axis angled aligned output shaft for driving a tool in selectable positions lockable fixed. Thus, the respective optimal working position can be set for different cases of work, this electric hand tool machine has no lighting device for illuminating the work of the tool.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Elektrohandwerkzeugmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß durch die Drehbarkeit der am Arbeitsende des Maschinengehäuses angeordneten Beleuchtungsvorrichtung deren Licht immer auf die veränderte Lage des Arbeitswerkzeugs relativ zum Maschinengehäuse einstellbar ist, so daß in jeder Arbeitsposition des Winkelarbeitskopfs die Arbeitsstelle maximal ausgeleuchtet werden kann. Dadurch werden auch an schwer zugänglichen, engen Stellen ausreichende Sichtverhältnisse für den Monteur geschaffen.The electric power tool of the invention with the features of claim 1 has the advantage that the light is always adjustable to the changed position of the working tool relative to the machine housing by the rotatability of the arranged at the working end of the machine housing lighting device, so that in each working position of the angle working head the workplace lit maximally can be. This creates sufficient visibility for the installer even in hard to reach, narrow places.

Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegeben Elektrohandwerkzeugmaschine möglich.The measures listed in the further claims advantageous refinements and improvements of claim 1 electric hand tool are possible.

Gemäß der Erfindung sind der Beleuchtungsvorrichtung mit den Arbeitspositionen des Winkelarbeitskopfs übereinstimmende, diskrete Drehpositionen zugeordnet. Diese konstruktive Maßnahme bringt den Vorteil, daß in jeder Arbeitsposition des Winkelarbeitskopfs automatisch eine optimale Ausleuchtung der Arbeitsstelle gewährleistet ist, die keiner Korrektur bedarf.According to the invention, the lighting device is associated with the working positions of the angle working head matching, discrete rotational positions. This structural measure has the advantage that in each working position of the angle working head automatically optimal illumination of the job is guaranteed, which requires no correction.

Gemäß einer vorteilhaften Ausführungsform der Erfindung weist die Beleuchtungsvorrichtung ein auf das Maschinengehäuse aufgeschobenes, hohlzylindrisches Lampengehäuse und eine Lichtquelle auf, die in einem im Lampengehäuse ausgeformten Lampenschacht aufgenommen ist, wobei dessen Schachtachse unter einem spitzen Winkel zur Gehäuseachse ausgerichtet ist und dessen Schachtöffnung zum Winkelarbeitskopf weist. Die diskreten Drehpositionen der Beleuchtungsvorrichtung werden durch entsprechende Drehung des Lampengehäuses auf dem Maschinengehäuse realisiert, wobei gemäß einer vorteilhaften Ausführungsform der Erfindung in jeder Drehposition des Lampengehäuses zwischen der Innenwand des Lampengehäuses und der Außenwand des Maschinengehäuses Formschluß besteht.According to an advantageous embodiment of the invention, the lighting device has a slipped onto the machine housing, hollow cylindrical lamp housing and a light source, which is accommodated in a lamp housing formed in the lamp housing, the shaft axis is aligned at an acute angle to the housing axis and the shaft opening facing the angle working head. The discrete rotational positions of the lighting device are realized by corresponding rotation of the lamp housing on the machine housing, wherein according to an advantageous embodiment of the invention in each rotational position the lamp housing between the inner wall of the lamp housing and the outer wall of the machine housing is positive engagement.

Gemäß einer vorteilhaften Ausführungsform der Erfindung ist das Lampengehäuse aus zwei, vorzugsweise spiegelsymmetrisch ausgeführten Gehäuseschalen zusammengesetzt, die längs einer durch die Gehäuseachse verlaufenden Ebene aneinanderliegen. Der Formschluß ist durch mindestens zwei miteinander korrespondierende, jeweils an der Innenwand des Lampengehäuses und an der Außenwand des Maschinengehäuses ausgebildete Mehrkante realisiert, wobei die Anzahl der Kanten der Mehrkante der Zahl der möglichen Arbeitspositionen des Winkelarbeitskopfs entspricht. Ist beispielsweise der Winkelarbeitskopf in insgesamt acht Drehstellungen von jeweils 45° relativ zum Maschinengehäuse verstellbar, so sind die Mehrkante jeweils als Achtkant ausgeführt, wodurch sich insgesamt acht Drehpositionen des Lampengehäuses ergeben, von denen jeweils eine einer Arbeitsposition des Winkelarbeitskopfs fest zugeordnet ist. Die beiden Gehäuseschalen sind durch Spannmittel zusammengehalten. Durch Lösen der Spannmittel kann das Lampengehäuse auf dem Mehrkant des Maschinengehäuses versetzt werden. Nach Einstellen der gewünschten Drehposition werden die beiden Gehäuseschalen wieder durch die Spannmittel verbunden.According to an advantageous embodiment of the invention, the lamp housing is composed of two, preferably mirror-symmetrically designed housing shells which lie against one another along a plane extending through the housing axis. The positive engagement is realized by at least two mutually corresponding, each formed on the inner wall of the lamp housing and on the outer wall of the machine housing multi-edge, wherein the number of edges of the multiple edge corresponds to the number of possible working positions of the angle working head. For example, if the angle working head in a total of eight rotational positions of 45 ° relative to the machine housing adjustable, the multi-edge are each designed as an octagon, resulting in a total of eight rotational positions of the lamp housing, of which one of a working position of the angle working head is permanently assigned. The two housing shells are held together by clamping means. By loosening the clamping means, the lamp housing can be placed on the polygon of the machine housing. After setting the desired rotational position, the two housing shells are connected again by the clamping means.

Zeichnungdrawing

Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
ausschnittweise eine Seitenansicht eines Winkelschraubers, teilweise geschnitten,
Fig. 2
eine Seitenansicht einer Beleuchtungsvorrichtung am Winkelschrauber gemäß Fig. 1,
Fig. 3
einen Längsschnitt der Beleuchtungsvorrichtung in Fig. 2,
Fig. 4
eine Ansicht der Beleuchtungsvorrichtung in Richtung Pfeil IV in Fig. 2,
Fig. 5
eine Ansicht der Beleuchtungsvorrichtung in Richtung Pfeil V in Fig. 2,
Fig. 6
einen Schnitt längs der Linie VI - VI in Fig. 3,
Fig. 7
einen Schnitt längs der Linie VII - VII in Fig. 3.
The invention is explained in more detail in the following description with reference to an embodiment shown in the drawing. Show it:
Fig. 1
partially a side view of an angular screwdriver, partially cut,
Fig. 2
1 is a side view of a lighting device on the angle wrench according to FIG. 1,
Fig. 3
a longitudinal section of the lighting device in Fig. 2,
Fig. 4
a view of the lighting device in the direction of arrow IV in Fig. 2,
Fig. 5
a view of the lighting device in the direction of arrow V in Fig. 2,
Fig. 6
a section along the line VI - VI in Fig. 3,
Fig. 7
a section along the line VII - VII in Fig. 3rd

Beschreibung des AusführungsbeispielsDescription of the embodiment

Der in Fig. 1 ausschnittweise und teilweise geschnitten dargestellte Winkelschrauber als Beispiel für eine allgemeine Elektrohandwerkzeugmaschine mit einem verstellbaren Winkelarbeitskopf weist ein Maschinengehäuse 10 auf, das an seinem von einem Handgriff zum Halten des Winkelschraubers abgekehrten Arbeitsende eine Aufnahme 11 für einen Winkeischraubkopf 12 aufweist. Die teilweise aus dem Maschinengehäuse 10 vorstehende Aufnahme 11 ist mit ihrem vom Winkelschraubkopf 12 abgekehrten, hinteren Ende in das Maschinengehäuse 10 eingesetzt und in diesem verschraubt. Die Aufnahme 11 hat stirnseitig mehrere, im Ausführungsbeispiel insgesamt vier, eingepreßte Zylinderstifte 13, und der Winkelschraubkopf 12 weist an seinem den Zylinderstiften 13 zugekehrten Stirnende in Umfangsrichtung versetzte Aussparungen 14 auf (im Ausführungsbeispiel insgesamt acht), in die bei angebautem Winkelschraubkopf 12 die Zylinderstifte 13 axial und formschlüssig eingreifen. Zylinderstifte 13 und Aussparungen 14 sind jeweils äquidistant über den Umfang verteilt angeordnet, wobei der Drehwinkelabstand der Zylinderstifte 13 voneinander dem doppelten Drehwinkelabstand der Aussparungen 14 voneinander entspricht, so daß jeweils immer vier Zylinderstifte 13 in vier der insgesamt acht Aussparungen 14 im Winkelschraubkopf 12 eingreifen. Nach Abziehen des Winkelschraubkopfs 12 von den Zylinderstiften 13 kann dieser um jeweils einen Drehwinkel, der dem Abstand zweier Aussparungen 14 voneinander entspricht, im Ausführungsbeispiel also um 45°, gedreht und mit seinen Aussparungen 14 wieder auf die Zylinderstifte 13 aufgeschoben werden. Insgesamt kann damit der Winkelschraubkopf 12 in acht Drehstellungen relativ zur Gehäuseachse 101 des Maschinengehäuses 10 versetzt angeordnet werden, so daß der Winkelschrauber bei unveränderter Lage des Maschinengehäuses 10 insgesamt acht verschiedene Arbeitspositionen für das Schraubwerkzeug besitzt. Jede Schraubposition ist gegenüber der anderen um 45° Drehwinkel versetzt. Zum Festlegen des Winkelschraubkopfs 12 in der Aufnahme 13 ist eine Überwurfmutter 15 vorgesehen, die auf einem Außengewinde der Aufnahme 11 verschraubbar ist.The angle wrench shown in Fig. 1 in part and partially shown as an example of a general electric hand tool with an adjustable angle working head has a machine housing 10, which has a receptacle 11 for a Winkeischraubkopf 12 at its remote from a handle for holding the angle wrench working end. The partially protruding from the machine housing 10 receptacle 11 is inserted with its remote from the Winkelschraubkopf 12, the rear end in the machine housing 10 and screwed into this. The receptacle 11 has a plurality of frontally, in the exemplary embodiment four, pressed-in cylindrical pins 13, and the Winkelschraubkopf 12 has at its the cylinder pins 13 facing front end circumferentially offset recesses 14 (in the embodiment, a total of eight), in the attached Winkelschraubkopf 12, the cylindrical pins thirteenth engage axially and positively. Cylindrical pins 13 and recesses 14 are each equidistant over arranged distributed around the circumference, wherein the rotational angular distance of the cylindrical pins 13 from each other twice the angular distance of the recesses 14 corresponds to each other, so that in each case four cylinder pins 13 engage in four of the total of eight recesses 14 in the Winkelschraubkopf 12. After subtracting the Winkelschraubkopfs 12 of the cylinder pins 13, this can in each case a rotation angle corresponding to the distance between two recesses 14 from each other, ie in the exemplary embodiment by 45 °, rotated and pushed with its recesses 14 back to the cylinder pins 13. Overall, thus the Winkelschraubkopf 12 can be arranged offset in eight rotational positions relative to the housing axis 101 of the machine housing 10, so that the angle wrench with unchanged position of the machine housing 10 has a total of eight different working positions for the screwing. Each screw position is offset from the other by 45 ° rotation angle. To set the Winkelschraubkopfs 12 in the receptacle 13, a union nut 15 is provided, which is screwed onto an external thread of the receptacle 11.

Im Winkelschraubkopf 12 ist ein aus zwei ineinandergreifenden Kegelrädern bestehendes Winkelgetriebe 16 angeordnet, von denen das eine Kegelrad 17 auf einer Antriebswelle 18 und das andere Kegelrad 19 auf einer zur Antriebswelle 18 rechtwinklig ausgerichteten Abtriebswelle 20 jeweils drehfest sitzt. Antriebswelle 18 und Abtriebswelle 20 sind im Winkelschraubkopf 12 drehend gelagert. Die Antriebswelle 18 wird von einem hier nicht dargestellten, im Maschinengehäuse 10 aufgenommenen Elektromotor unter Zwischenschaltung eines Übersetzungsgetriebes und eines Drehmomentbegrenzers angetrieben. Mit der Abtriebswelle 20 ist ein Spannfutter 21 zur Aufnahme eines Schraubwerkzeugs drehfest verbunden.In the Winkelschraubkopf 12 consisting of two intermeshing bevel gears existing angle gear 16 is arranged, of which the one bevel gear 17 on a drive shaft 18 and the other bevel gear 19 is rotatably seated on a drive shaft 18 at right angles aligned output shaft 20. Drive shaft 18 and output shaft 20 are rotatably mounted in Winkelschraubkopf 12. The drive shaft 18 is driven by a not shown here, recorded in the machine housing 10 electric motor with the interposition of a transmission gear and a torque limiter. With the output shaft 20, a chuck 21 for receiving a screwing is rotatably connected.

Der Winkelschrauber verfügt über eine Beleuchtungsvorrichtung 22 zum Ausleuchten der Schraubstelle während eines Schraubvorgangs. Die Beleuchtungsvorrichtung 22 umfaßt ein hohlzylindrisches Lampengehäuse 23, in dem ein Lampenschacht 231 ausgeformt ist, und eine Lichtquelle in Form einer LED 24, die in den Lampenschacht 231 eingesetzt ist und über ein Stromkabel 33 mit einer Stromquelle, z. B. dem Akku des als Akkuschrauber konzipierten Winkelschraubers, verbunden ist. Das Lampengehäuse 23 ist auf das Arbeitsende des Maschinengehäuses 10 aufgesetzt und so verspannt, daß es axial nicht abziehbar ist. Der Lampenschacht 231 ist so an einer Seite des Lampengehäuses 23 angeformt, daß die Schachtachse 231 a unter einem spitzen Winkel zur Gehäuseachse 101 des Maschinengehäuses 10 (und zur Achse des dazu koaxial angeordneten Lampengehäuses 23) verläuft und die Schachtöffnung 231 b, aus der das Licht der LED 24 austritt, zum Winkelschraubkopf 12 weist.The angle wrench has an illumination device 22 for illuminating the screw point during a screwing operation. The lighting device 22 comprises a hollow cylindrical lamp housing 23, in a lamp shaft 231 is formed, and a light source in the form of an LED 24, which is inserted into the lamp shaft 231 and a power cable 33 to a power source, for. B. the battery of the designed as a screwdriver angle wrench is connected. The lamp housing 23 is placed on the working end of the machine housing 10 and clamped so that it is not removable axially. The lamp shaft 231 is formed on one side of the lamp housing 23, that the shaft axis 231 a at an acute angle to the housing axis 101 of the machine housing 10 (and the axis of the coaxially arranged lamp housing 23) extends and the shaft opening 231 b, from which the light the LED 24 exits, the Winkelschraubkopf 12 points.

Das Lampengehäuse 23 ist am Maschinengehäuse 10 in diskrete Drehpositionen verstellbar, wobei jeweils eine Drehposition mit einer der Arbeitspositionen des Winkelschraubkopfs 12 übereinstimmt. Die diskreten Drehpositionen werden dabei jeweils durch Formschluß zwischen Maschinengehäuse 10 und Lampengehäuse 23 vorgegeben.The lamp housing 23 is adjustable on the machine housing 10 in discrete rotational positions, wherein each one rotational position coincides with one of the working positions of the Winkelschraubkopfs 12. The discrete rotational positions are in each case predetermined by positive engagement between the machine housing 10 and the lamp housing 23.

Das in Fig. 2 bis 7 in verschiedenen Ansichten und Schnitten dargestellte Lampengehäuse 23 ist aus zwei vorzugsweise aus Kunststoff gefertigten Gehäuseschalen 25, 26 zusammengesetzt, die längs einer durch die Gehäuseachse 101 des Maschinengehäuses 10 verlaufenden Ebene aneinanderstoßen (Fig. 4 und 5). In jeder Gehäuseschale 25, 26 ist der Lampenschacht 231 je zur Hälfte ausgeformt. Zur Herstellung des Formschlusses in den Drehpositionen des Lampengehäuses 23 (im Ausführungsbeispiel entsprechend den acht Arbeitspositionen des Winkelschraubkopfs 12 acht Drehpositionen) ist an der Innenwand des Lampengehäuses 23 ein Achtkant 27 (Fig. 3 und 6) ausgebildet, der mit einem gleichen, in Fig. 1 angedeuteten Achtkant 34 auf der Außenwand des Maschinengehäuses 10 korrespondiert. Der Achtkant 27 und entsprechend der Achtkant 34 des Maschinengehäuses 10 weisen eine nur geringe axiale Tiefe bzw. Breite auf. Der Achtkant 27 ist jeweils zur Hälfte in der Gehäuseschale 25 und in der Gehäuseschale 26 ausgebildet.The lamp housing 23 shown in various views and sections in FIGS. 2 to 7 is composed of two preferably made of plastic housing shells 25, 26 which abut one another along a plane passing through the housing axis 101 of the machine housing 10 (FIGS. 4 and 5). In each housing shell 25, 26 of the lamp shaft 231 is formed half each. To produce the positive locking in the rotational positions of the lamp housing 23 (eight rotational positions in the embodiment corresponding to the eight working positions of the Winkelschraubkopfs 12) on the inner wall of the lamp housing 23 an octagon 27 (FIGS. 3 and 6) is formed, which with a same, in FIG. 1 indicated octagon 34 on the outer wall of the machine housing 10 corresponds. The octagon 27 and corresponding to the octagon 34 of the machine housing 10 have only a small axial depth or width. The octagon 27 is formed in each half in the housing shell 25 and in the housing shell 26.

Nach Aufsetzen der beiden Gehäuseschalen 25, 26 auf das Maschinengehäuse 10 werden die beiden Gehäuseschalen 25, 26 durch Spannmittel lösbar miteinander verbunden. Als Spannmittel sind im Ausführungsbeispiel ein Sprengring 28 und ein vorzugsweise aus Kunststoff hergestellter Clipsring 29 vorgesehen, die die beiden Gehäuseschalen 25, 26 umschließen. Wie Fig. 1 zeigt, ist dabei der Sprengring 28 in einer an dem von dem Winkelschraubkopf 12 abgekehrten, hinteren Ende des Lampengehäuses 23 angeordneten Ringnut 30 eingelegt, während der Clipsring 29 auf einem an dem anderen, dem Winkelschraubkopf 12 zugekehrten Ende des Lampengehäuses 23 stirnseitig angeformten axial vorstehenden Ringsteg 31 aufgeclipst ist.After placing the two housing shells 25, 26 on the machine housing 10, the two housing shells 25, 26 releasably connected to each other by clamping means. As clamping means in the exemplary embodiment, a snap ring 28 and a preferably made of plastic clips ring 29 are provided, which enclose the two housing shells 25, 26. As shown in FIG. 1, while the snap ring 28 is inserted in an arranged on the remote from the Winkelschraubkopf 12, rear end of the lamp housing 23 annular groove 30 while the clip ring 29 on one on the other, the Winkelschraubkopf 12 facing the end of the lamp housing 23 frontally molded axially projecting annular ridge 31 is clipped.

In der in Fig. 1 dargestellten Grundposition des Winkelschraubkopfs 12, die die in den häufigsten Fällen verwendete Arbeitsposition des Winkelschraubers ist, liegt der Lampenschacht 231 mit der LED 24 im unteren Bereich des Maschinengehäuses 10, so daß die im Gehäuseschacht 231 angeordnete. LED 24 automatisch ein in das Spannfutter 21 des Winkelschraubkopfs 12 eingesetztes Schraubwerkzeug anleuchtet. Wird der Winkelschraubkopf 12 bei unveränderter Ausrichtung des Maschinengehäuse 10 um die Gehäuseachse 101 des Maschinengehäuses 10 verschwenkt, wozu nach dem vorstehend Ausgeführten die Überwurfmutter 15 gelöst, der Winkelschraubkopf 12 um die Gehäuseachse 101 des Maschinengehäuses 10 geschwenkt und die Überwurfmutter 15 wieder aufgeschraubt werden muß, so muß anschließend das Lampengehäuse 23 um den gleichen Drehwinkel gedreht werden. Da die von dem Achtkant 27 vorgegebenen Drehpositionen des Lampengehäuses 23 mit den Arbeitspositionen des Winkelschraubkopfs 12 übereinstimmen, ist nach entsprechender Drehung des Lampengehäuses 23 sichergestellt, daß auch in der neuen Arbeitsposition des Winkelschraubkopfs 12 das Schraubwerkzeug von der LED 24 optimal angeleuchtet ist. Zum Verdrehen des Lampengehäuses 23 ist der Clipsring 29 und der Sprengring 28 vom Lampengehäuse 23 abzunehmen. Die dadurch freiwerdenden beiden Gehäuseschalen 25, 26 werden in der entsprechenden Drehposition wieder aneinandergesetzt und mittels des auf den Ringsteg 31 aufgeclipsten Clipsrings 29 und des in die Ringnut 30 eingesetzten Sprengrings 28 in der neuen Drehposition fixiert. In dieser neuen Drehposition liegen wieder alle Seitenflächen des Achtkants 27 und des damit korrespondierenden, am Maschinengehäuse 10 ausgebildeten Achtkants plan aufeinander.In the illustrated in Fig. 1 basic position of the Winkelschraubkopfs 12, which is the working position of the angle wrench used in the most cases, the lamp shaft 231 is located with the LED 24 in the lower region of the machine housing 10, so that arranged in the housing shaft 231. LED 24 automatically illuminates an inserted into the chuck 21 of the Winkelschraubkopfs 12 screwing. If the Winkelschraubkopf 12 pivoted with unchanged orientation of the machine housing 10 to the housing axis 101 of the machine housing 10, for which after the above executed the union nut 15 solved, the Winkelschraubkopf 12 pivoted about the housing axis 101 of the machine housing 10 and the nut 15 must be screwed again, so then the lamp housing 23 must be rotated by the same angle of rotation. Since the predetermined by the octagon 27 rotational positions of the lamp housing 23 coincide with the working positions of the Winkelschraubkopfs 12, it is ensured after appropriate rotation of the lamp housing 23 that even in the new working position of the Winkelschraubkopfs 12 the screwing of the LED 24 is optimally illuminated. To rotate the lamp housing 23 of the clip ring 29 and the snap ring 28 is removed from the lamp housing 23. The thus released two housing shells 25, 26 are juxtaposed in the corresponding rotational position and by means of the annular web 31st clipped clip ring 29 and the snap ring 28 inserted into the annular groove 30 fixed in the new rotational position. In this new rotational position, all the side surfaces of the octagon 27 and the octagon corresponding thereto, which is formed on the machine housing 10, lie flat against each other.

In dem beschriebenen Ausführungsbeispiel ist an dem vom Winkelschraubkopf 12 abgekehrten Ende des Lampengehäuses 23 noch ein weiterer Achtkant 32 mit geringer axialer Tiefe ausgebildet, der mit einem an gleicher Stelle auf der Außenwand des Maschinengehäuses 10 ausgebildeten Achtkant 35 (Fig. 1) korrespondiert. Dies hat den Vorteil, daß das Lampengehäuse 23 am vorderen und hinteren Ende gleichmäßig auf jeweils einem Achtkant 34, 35 am Maschinengehäuse 10 verspannt ist.In the described embodiment, at the end facing away from the Winkelschraubkopf 12 end of the lamp housing 23 is still another octagon 32 formed with a small axial depth, which corresponds to a formed on the same position on the outer wall of the machine housing 10 octagon 35 (Fig. This has the advantage that the lamp housing 23 is clamped at the front and rear end evenly on each octagon 34, 35 on the machine housing 10.

Die Ausbildung des Formschlusses zwischen Maschinengehäuse 10 und Lampengehäuse 23 richtet sich nach der Anzahl der möglichen Arbeitspositionen des Winkelschraubkopfs 12. Hat dieser beispielhaft nur vier um 90° gegeneinander versetze Arbeitspositionen, so wird der Formschluß durch miteinander korrespondierende Vierkante auf der Außenwand des Maschinengehäuse 10 und der Innenwand des Lampengehäuse 23 realisiert.The embodiment of the positive connection between the machine housing 10 and the lamp housing 23 depends on the number of possible working positions of the Winkelschraubkopfs 12. If this example only four offset by 90 ° working positions, the positive engagement by mutually corresponding Vierkante on the outer wall of the machine housing 10 and Interior wall of the lamp housing 23 realized.

Claims (9)

  1. Portable electric power tool, in particular an angle screwdriver, comprising a machine housing (10) with an angle working head (12) which is arranged at the working end of the machine housing (10) and has an output shaft (20) oriented at an angle to the housing axis (101) for driving a tool and can be shifted into various working positions by rotation about the housing axis (101), and comprising a lighting device (22) arranged on the machine housing (10) for lighting the working point of the tool, characterized in that the lighting device (22) is arranged at the working end of the machine housing (10) and is designed to be rotatable about the housing axis (101), discrete rotary positions which correspond to the working positions of the angle working head (12) being assigned to the lighting device (22).
  2. Portable electric power tool according to Claim 1, characterized in that the lighting device (22) has a hollow-cylindrical lamp housing (23), pushed onto the machine housing (10), and a light source (24) which is accommodated in a lamp shaft (231) formed in the lamp housing (23) and whose shaft axis (231a) is oriented at an acute angle to the housing axis (101) and whose shaft opening (231b) points towards the angle working head (12).
  3. Portable electric power tool according to Claim 2, characterized in that there is positive locking between the inner wall of the lamp housing (23) and the outer wall of the machine housing (10) in each rotary position of the lamp housing (23).
  4. Portable electric power tool according to Claim 3, characterized in that the lamp housing (23) is composed of two housing shells (25, 26) which meet along a plane running through the housing axis (101), in that at least one polygon (27) is formed on the inner wall of the lamp housing (23) and at least one identical polygon (34) corresponding with said polygon (27) is formed on the outer wall of the machine housing (10), and in that the two housing shells (25, 26) are releasably connected to one another by clamping means.
  5. Portable electric power tool according to Claim 4, characterized in that the clamping means have a snap ring (28), which can be inserted into an annular groove (30) formed in the lamp housing (23), and/or a clip ring (29) which can be clipped onto an annular web (31) formed on the lamp housing (23).
  6. Portable electric power tool according to Claim 5, characterized in that the annular web (31) is arranged on that end of the lamp housing (23) which faces the angle working head (12), and the annular groove (30) is arranged on that end of the lamp housing (23) which faces away from said angle working head (12).
  7. Portable electric power tool according to one of Claims 4 to 6, characterized in that the lamp shaft (231) accommodating the light source (24) is formed in two equal parts in each housing shell (25, 26).
  8. Portable electric power tool according to one of Claims 4 to 7, characterized in that the two polygons (27, 34) corresponding with one another on the lamp housing (23) and the machine housing (10) are arranged with a small axial depth close to that end of the lamp housing (23) which faces the angle screwdriving head (12).
  9. Portable electric power tool according to Claim 8, characterized in that two further polygons (32, 35) corresponding with one another are formed on that end of the lamp housing (23) which faces away from the angle screwdriving head (12), said polygons (32, 35) having the same number of edges as the polygons (27, 34) arranged at the other end of the lamp housing (23).
EP03811719A 2002-11-25 2003-07-11 Electric hand-held machine tool Expired - Lifetime EP1567308B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10254829 2002-11-25
DE2002154829 DE10254829A1 (en) 2002-11-25 2002-11-25 Electric hand tool
PCT/DE2003/002340 WO2004048045A1 (en) 2002-11-25 2003-07-11 Electric hand-held machine tool

Publications (2)

Publication Number Publication Date
EP1567308A1 EP1567308A1 (en) 2005-08-31
EP1567308B1 true EP1567308B1 (en) 2007-05-23

Family

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EP03811719A Expired - Lifetime EP1567308B1 (en) 2002-11-25 2003-07-11 Electric hand-held machine tool

Country Status (5)

Country Link
EP (1) EP1567308B1 (en)
JP (1) JP2006507134A (en)
CN (1) CN100415454C (en)
DE (2) DE10254829A1 (en)
WO (1) WO2004048045A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005061870A1 (en) * 2005-12-23 2007-07-05 Robert Bosch Gmbh Electric-powered hand tool e.g. rotary sanding or polishing tool has two-part housing with one overlapping half linked to the other by vibration dampener
DE102006040647A1 (en) * 2006-08-30 2008-03-13 Robert Bosch Gmbh Hand tool
DE102006045157B4 (en) 2006-09-25 2020-06-18 Robert Bosch Gmbh Hand tool
JP2009214238A (en) * 2008-03-11 2009-09-24 Makita Corp Electric tool
JP5229538B2 (en) * 2008-03-31 2013-07-03 日立工機株式会社 Portable cutting tool
DE102008042426A1 (en) 2008-09-29 2010-04-01 Robert Bosch Gmbh Hand tool
DE102009018589A1 (en) * 2009-04-23 2011-01-05 Metabowerke Gmbh Hand-guided power tool has housing and housing-mounted lighting device for illumination of work area, where lighting device has light source and light emitting area
JP2013059820A (en) * 2011-09-12 2013-04-04 Makita Corp Electric tool
JP5472411B2 (en) * 2012-09-14 2014-04-16 日立工機株式会社 Electric tool
DE102015219570A1 (en) * 2015-10-09 2017-04-13 Robert Bosch Gmbh TOOL WITH UNIVERSAL INTERFACE FOR A TRANSFER INTERFACE
WO2018228825A1 (en) * 2017-06-12 2018-12-20 Atlas Copco Industrial Technique Ab Power wrench with angle drive

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DE8529779U1 (en) * 1985-10-19 1985-12-05 Gander, Bernhard, 7515 Linkenheim-Hochstetten Power tool
CN2083531U (en) * 1990-12-18 1991-08-28 宋志华 Screw driver with rotary light
DE4113951C1 (en) * 1991-04-29 1992-11-26 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
US20020131267A1 (en) * 1997-07-10 2002-09-19 Van Osenbruggen Anthony Alfred Illumination by hand-operated power tools

Also Published As

Publication number Publication date
CN1700972A (en) 2005-11-23
WO2004048045A1 (en) 2004-06-10
CN100415454C (en) 2008-09-03
JP2006507134A (en) 2006-03-02
DE10254829A1 (en) 2004-06-03
DE50307343D1 (en) 2007-07-05
EP1567308A1 (en) 2005-08-31

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