EP2583795B1 - Machine tool having working field illumination - Google Patents

Machine tool having working field illumination Download PDF

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Publication number
EP2583795B1
EP2583795B1 EP13150831.9A EP13150831A EP2583795B1 EP 2583795 B1 EP2583795 B1 EP 2583795B1 EP 13150831 A EP13150831 A EP 13150831A EP 2583795 B1 EP2583795 B1 EP 2583795B1
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EP
European Patent Office
Prior art keywords
machine tool
light
tool according
transparent element
luminous means
Prior art date
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Active
Application number
EP13150831.9A
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German (de)
French (fr)
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EP2583795A1 (en
Inventor
Joachim Hecht
Jens Brennenstuhl
Heiko Roehm
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2583795A1 publication Critical patent/EP2583795A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/021—Construction of casings, bodies or handles with guiding devices
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/008—Leisure, hobby or sport articles, e.g. toys, games or first-aid kits; Hand tools; Toolboxes
    • F21V33/0084—Hand tools; Toolboxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/21—Cutting by use of rotating axially moving tool with signal, indicator, illuminator or optical means

Definitions

  • the invention relates to a machine tool with a working field illumination according to the preamble of claim 1.
  • Hand-held power tools such as e.g. Power and / or cordless screwdrivers, drills, impact wrenches or impact drills have a gearbox, a motor, a switch with a switch operating element accessible on the housing and a motor housing. It is known to equip such devices with a working field lighting in order to work under unfavorable lighting conditions.
  • a power tool in which a light-emitting element is arranged below the transmission above the shift operating element.
  • the light-emitting element must typically be arranged at an angle to the tool-receiving axis in order to illuminate the end of short insertion tools, eg short bits of screwdriver.
  • short insertion tools eg short bits of screwdriver.
  • the length of the lighting unit in the tool axis direction is advantageously short, however, a sufficient overall height is required in order to arrange the lighting element in a sufficiently large angle can. Therefore, the shift operating member has a greater distance to the transmission housing, and the lighting element can be easily damaged. With classic wiring this must Usually be performed by a movable direction of rotation switch, which requires additional space.
  • an electrically driven tool-hand tool with a light source for illuminating the respective work area is known, wherein the light source may be formed as an electric lamp or halogen lamp and having a reflector.
  • the light-emitting element can be arranged parallel to the tool holder axis within the power tool and a lens can be connected in front of the direction correction of the light beam in order to be able to direct the light beam to the end of short application tools.
  • a lens can be connected in front of the direction correction of the light beam in order to be able to direct the light beam to the end of short application tools.
  • the luminous element or its main light beam can be arranged at any angle to the tool holder axis. Due to the fact that the transparent element is integrated into the housing and the luminous element can be arranged separately therefrom, height or length are not necessarily adversely affected negatively.
  • the housing itself can be formed in one or more parts.
  • the arrangement of the luminous element in relation to the transparent element can be selected independently of a necessary light beam direction for illuminating the working field after leaving the transparent element. This allows a great freedom of design.
  • the overall length of the lighting unit of light element and transparent element is low.
  • the height can be designed arbitrarily.
  • the transparent element forms a region of the housing, it passes through the housing shell. Its light entry surface lies within the housing, while its light exit surface faces outward relative to the housing.
  • An upstream lens for focusing the light of the luminous element can be dispensed with. Rather, a bundling function can be integrated into the transparent element.
  • a reflector surface inside the housing is arranged outside the transparent element such that the light can be deflected via the reflector surface into the light entry surface of the transparent element.
  • the reflector surface may additionally concentrate the light directed into the transparent element. An angle of the radiated light for illumination even short tool ends can be easily adjusted by the inclination of the reflector surface.
  • a propagation of the light between the luminous element and the transparent element can preferably take place without a light guide.
  • the light between the light element and the transparent element spreads in an air gap.
  • the luminous element can advantageously be arranged at a distance from the transparent element.
  • the luminous element may be e.g. be arranged on the gear housing near the tool holder. It is also possible to arrange the working field illumination in the housing area located below the handle, for instance above a battery pack which serves to supply power to the motor of the machine tool.
  • the reflector surface may be arranged spatially suitable for the luminous element and the transparent element in order to effect the deflection of the light from the luminous element to the transparent element.
  • the luminous element can engage in a recess of the transparent element.
  • the transparent element may be formed here preferably as a prism, in which the lighting element is inserted.
  • the reflector surface may then be e.g. be a mirrored prism surface.
  • the reflector surface may be metallically coated to redirect the light. This is possible both for separate from the transparent element as well as in the transparent element reflector surfaces.
  • the reflector surface can be arranged so that it allows a total reflection of the light and deflects the light in this way and leads to the light exit surface of the transparent element. This is particularly useful when the reflector surface is part of the transparent element.
  • the reflector surface may be arched to form e.g. to effect a focusing effect of the light.
  • the transparent element may adjoin a switching actuating element.
  • the working area lighting can be arranged in a particularly space-saving manner, even for short application tools.
  • the light-emitting element can be activated when a shift operating element is pressed, before a motor can be switched on by the shift operating element.
  • the workfield lighting can then be already active and illuminate the work area before the engine starts to turn. This allows a more accurate work and positioning of the machine tool.
  • FIG. 1 and 2 a section than by a machine tool 10 in a preferred embodiment.
  • Fig. 2 illustrates a detail of the embodiment.
  • the machine tool 10 embodied by way of example as a battery-powered electric machine tool with a housing, which is shown as a whole with 12, comprises a motor 14 in a motor housing 28a with a gear 16 connected thereto in the direction of a tool holder axis 24, which is arranged in an unspecified transmission housing, and then a tool holder 22 for an unillustrated insert tool.
  • a direction of rotation switch 26 is arranged below the motor 14 and adjacent to this a direction of rotation switch 26 arranged.
  • the insert tool can be driven, for example, rotating and / or beating.
  • a switch 18 for switching on and off of the motor 14 is arranged, which can be actuated via a switch actuator 20 by an operator of the machine tool 10.
  • a grip part 28b connects, in which a battery pack unspecified is used in the lower area.
  • the machine tool 10 has a working field illumination arranged in the housing 12, which forms a housing region 12a, the working field illumination comprising a luminous means 30 and a transparent element 50.
  • Light from the luminous means 30 can be coupled out of the transparent element 50 to the working field in front of the tool holder 22, wherein a light beam 56 can be deflected between the luminous means 30 and the transparent element 50 on a reflector surface 40.
  • a propagation of the light between the luminous element 30 and the transparent element 50 can take place through an air gap, in particular without a light guide.
  • the transparent element 50 forms a portion 12a of the housing 12, i. it passes through the housing shell and protrudes with its light entrance surface 52 into the interior of the housing 12 and with its light exit surface 54 to the outside on the outside of the housing 12.
  • the light entrance surface 52 is directed towards the reflector surface 40.
  • the reflector surface 40 is formed by a mirrored, in particular metallized element, which is spaced from the transparent element 50 and arranged on a carrier 42.
  • the light-emitting element 30 is arranged on the underside of the transmission housing and illuminates the reflector surface 40 (in the Drawing down).
  • the light-emitting element 30 can be, for example, a light bulb or a light-emitting diode (LED, OLED).
  • the light-emitting element 30 is shown as a mounted on a board LED (SMD LED).
  • the transparent element 50 is arranged in the region of the machine tool 10 which is located between the switch actuating element 20 and the gear 14 and adjoins the switch actuating element 20.
  • the transparent member may be made of plastic such as PMMA (polymethyl methacrylate), PC (polycarbonate) or PS (polystyrene) or the like.
  • FIG. 3 and 4 Figure 1 shows a section as through a machine tool 10 in an embodiment which does not constitute an embodiment of the invention.
  • Fig. 4 illustrates a detail of the embodiment.
  • the example designed as a battery-powered power tool machine tool 10 with a total of 12 designated housing comprises as in the first embodiment, a motor 14 in a motor housing 28a with a connected thereto in the direction of a tool holder axis 24 gear 16, which is arranged in a transmission housing unspecified , And then a tool holder 22 for an unillustrated insert tool.
  • a direction of rotation switch 26 is arranged below the motor 14 and adjacent to this a direction of rotation switch 26 arranged.
  • the insert tool can be driven, for example, rotating and / or beating.
  • a switch 18 for switching on and off of the motor 14 is arranged, which can be actuated via a switch actuator 20 by an operator of the machine tool 10.
  • a grip part 28b connects, in which a battery pack unspecified is used in the lower area.
  • the machine tool 10 has a working field illumination arranged in the housing 12, which forms a housing region 12a, the working field illumination comprising a luminous means 30 and a transparent element 50.
  • Light from the luminous means 30 can be coupled out of the transparent element 50 to the working field in front of the tool holder 22, wherein a light beam 56 can be deflected between the luminous means 30 and the transparent element 50 on a reflector surface 40.
  • a propagation of the light between the luminous element 30 and the transparent element 50 can take place through an air gap, in particular without a light guide.
  • the transparent element 50 forms a portion 12a of the housing 12, i. it passes through the housing shell and protrudes with its light entry surface 52 into the interior of the housing 12 and with its light exit surface 54 to the outside on the outside of the housing 12.
  • the light-emitting element 30 may e.g. a light bulb or a light emitting diode (LED, OLED). In the exemplary embodiment, the light-emitting element 30 is shown as a mounted on a board LED (SMD LED).
  • the reflector surface 40 is here a component of the transparent element 50, this being formed by a surface which is inclined at an angle to the main emission direction of the luminous element 30, which leads to total reflection of the light in the direction of the light exit surface 54.
  • the light entry surface 52 is directed toward the luminous element 30.
  • the transparent element 50 is arranged in the region of the machine tool 10 which is located between the switch actuating element 20 and the gear 14 and adjoins the switch actuating element 20.
  • the transparent member may be made of plastic such as PMMA (polymethyl methacrylate), PC (polycarbonate) or PS (polystyrene) or the like.
  • Fig. 5 shows a further embodiment of a machine tool 10 with a working field illumination, which is not an embodiment of the invention.
  • the machine tool 10 corresponds in its construction to the machine tools in Fig. 1 and 3 which is referred to for a more detailed description.
  • a transparent element 50 forms a region 12a of a housing 12 of the machine tool 10.
  • the transparent element 50 is formed in this embodiment as a prism.
  • the prism has a recess 58 into which a lighting element 30 is inserted.
  • the luminous element 30 is arranged on an underside of a transmission housing.
  • a light beam 56 from the luminous element 30 is deflected at a reflector surface 40 towards the light exit surface 54 of the transparent element 50 in order to illuminate a working field in front of a tool holder 22 of the machine tool 10.
  • the reflector surface is a mirrored prism surface which is arranged at a suitable angle to the luminous element 30.

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Werkzeugmaschine mit einer Arbeitsfeldbeleuchtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a machine tool with a working field illumination according to the preamble of claim 1.

Handgeführte Elektrowerkzeugmaschinen wie z.B. netz- und/oder akkubetriebene Schrauber, Bohrschrauber, Schlagschrauber oder Schlagbohrmaschinen besitzen ein Getriebe, einen Motor, einen Schalter mit einem am Gehäuse zugänglichen Schaltbetätigungselement und ein Motorgehäuse. Bekannt ist, solche Geräte mit einer Arbeitsfeldbeleuchtung auszustatten, um auch unter ungünstigen Lichtverhältnissen arbeiten zu können.Hand-held power tools such as e.g. Power and / or cordless screwdrivers, drills, impact wrenches or impact drills have a gearbox, a motor, a switch with a switch operating element accessible on the housing and a motor housing. It is known to equip such devices with a working field lighting in order to work under unfavorable lighting conditions.

Aus der DE 297 19 020 U1 ist eine Elektrowerkzeugmaschine bekannt, bei der ein Leuchtelement unterhalb des Getriebes oberhalb des Schaltbetätigungselements angeordnet ist. Das Leuchtelement muss typischerweise im Winkel zu der Werkzeugaufnahme-Achse angeordnet sein, um auch das Ende von kurzen Einsatzwerkzeugen, z.B. kurze Schrauberbits, zu beleuchten. Zwar ist die Baulänge der Beleuchtungseinheit in Werkzeugachsenrichtung vorteilhaft kurz, jedoch ist eine hinreichende Bauhöhe erforderlich, um das Leuchtelement in einem ausreichend großen Winkel anordnen zu können. Das Schaltbetätigungselement weist daher einen größeren Abstand zum Getriebegehäuse auf, und das Leuchtelement kann leicht beschädigt werden. Bei klassischer Verkabelung muss diese üblicherweise um einen beweglichen Drehrichtungsumschalter geführt werden, was zusätzlichen Bauraum erfordert.From the DE 297 19 020 U1 a power tool is known in which a light-emitting element is arranged below the transmission above the shift operating element. The light-emitting element must typically be arranged at an angle to the tool-receiving axis in order to illuminate the end of short insertion tools, eg short bits of screwdriver. Although the length of the lighting unit in the tool axis direction is advantageously short, however, a sufficient overall height is required in order to arrange the lighting element in a sufficiently large angle can. Therefore, the shift operating member has a greater distance to the transmission housing, and the lighting element can be easily damaged. With classic wiring this must Usually be performed by a movable direction of rotation switch, which requires additional space.

Aus der DE 91 07 667 U1 ist ein elektrisch angetriebenes Werkzeug-Handarbeitsgerät mit einer Lichtquelle zum Ausleuchten des jeweiligen Arbeitsbereichs bekannt, wobei die Lichtquelle als elektrische Lampe oder Halogenlampe ausgebildet sein kann und einen Reflektor aufweist.From the DE 91 07 667 U1 an electrically driven tool-hand tool with a light source for illuminating the respective work area is known, wherein the light source may be formed as an electric lamp or halogen lamp and having a reflector.

Alternativ kann das Leuchtelement innerhalb der Elektrowerkzeugmaschine parallel zur Werkzeugaufnahme-Achse angeordnet werden und zur Richtungskorrektur des Lichtstrahls eine Linse vorgeschaltet werden, um den Lichtstrahl auch auf das Ende kurzer Einsatzwerkzeuge lenken zu können. Zwar ist die Bauhöhe nunmehr gering und das Leuchtelement innerhalb des Gehäuses angeordnet und vor Beschädigungen geschützt, jedoch ist die Baulänge durch die serielle Anordnung Linse-Leuchtelement relativ groß. Die DE 84 24642 U1 offenbart eine Elektrowerkzeugmaschine, bei der zwischen einer Linse und dem Leuchtelement ein Lichtleiter angeordnet ist, mit dem das Licht von dem im Handgriff angeordneten Leuchtmittel zu einer am Gehäuse angesetzten Linse geleitet werden kann.Alternatively, the light-emitting element can be arranged parallel to the tool holder axis within the power tool and a lens can be connected in front of the direction correction of the light beam in order to be able to direct the light beam to the end of short application tools. Although the height is now low and the light-emitting element disposed within the housing and protected from damage, but the length is relatively large due to the serial arrangement lens-light element. The DE 84 24642 U1 discloses a power tool in which a light guide is arranged between a lens and the light element, with which the light can be passed from the light source arranged in the handle to a housing attached to the lens.

Da typischerweise zwischen Schaltbetätigungselement und Getriebegehäuse auch der Drehrichtungsumschalter und ein Schraubdom angeordnet werden muss, führt dies zu einem Kompromiss zwischen funktionierender Arbeitsfeldbeleuchtung und optimierter Lage von Griff bzw. Schaltbetätigungselement.Since typically also the direction of rotation switch and a screw dome must be arranged between the shift operating element and the transmission housing, this leads to a compromise between functioning working field illumination and optimized position of the handle or shift operating element.

Offenbarung der ErfindungDisclosure of the invention

Erfindungsgemäß wird eine Werkzeugmaschine mit den Merkmalen des Anspruchs 1 vorgeschlagen.According to the invention, a machine tool having the features of claim 1 is proposed.

Vorteilhaft kann das Leuchtelement bzw. dessen Hauptlichtstrahl in jedem Winkel zu der Werkzeugaufnahme-Achse angeordnet sein. Dadurch, dass das transparente Element in das Gehäuse integriert ist und das Leuchtelement separat dazu angeordnet sein kann, werden Bauhöhe oder Baulänge nicht zwangsläufig negativ beeinflusst. Das Gehäuse selbst kann dabei einteilig oder mehrteilig ausgebildet sein. Die Anordnung des Leuchtelements in Relation zu dem transparenten Element kann unabhängig von einer notwendigen Lichtstrahlrichtung zur Beleuchtung des Arbeitsfelds nach Verlassen des transparenten Elements gewählt werden. Dies erlaubt eine große Gestaltungsfreiheit. Die Baulänge der Beleuchtungseinheit aus Leuchtelement und transparentem Element ist gering. Die Bauhöhe kann beliebig gestaltet werden. Vorteilhaft ergibt sich eine große Flexibilität der Anordnung des Leuchtelements in Relation zur Werkzeugaufnahme.Advantageously, the luminous element or its main light beam can be arranged at any angle to the tool holder axis. Due to the fact that the transparent element is integrated into the housing and the luminous element can be arranged separately therefrom, height or length are not necessarily adversely affected negatively. The housing itself can be formed in one or more parts. The arrangement of the luminous element in relation to the transparent element can be selected independently of a necessary light beam direction for illuminating the working field after leaving the transparent element. This allows a great freedom of design. The overall length of the lighting unit of light element and transparent element is low. The height can be designed arbitrarily. Advantageously results in a great flexibility of the arrangement of the luminous element in relation to the tool holder.

Dadurch, dass das transparente Element einen Bereich des Gehäuses bildet, durchsetzt es die Gehäuseschale. Seine Lichteintrittsfläche liegt innerhalb des Gehäuses, während seine Lichtaustrittsfläche bezogen auf das Gehäuse nach außen weist. Auf eine vorgeschaltete Linse zur Bündelung des Lichts des Leuchtelements kann verzichtet werden. Vielmehr kann eine Bündelungsfunktion in das transparente Element integriert sein.The fact that the transparent element forms a region of the housing, it passes through the housing shell. Its light entry surface lies within the housing, while its light exit surface faces outward relative to the housing. An upstream lens for focusing the light of the luminous element can be dispensed with. Rather, a bundling function can be integrated into the transparent element.

Erfindungsgemäß ist eine Reflektorfläche innerhalb des Gehäuses so außerhalb des transparenten Elements angeordnet, dass das Licht über die Reflektorfläche in die Lichteintrittsfläche des transparenten Elements umlenkbar ist. Die Reflektorfläche kann zusätzlich das in das transparente Element gelenkte Licht bündeln. Ein Winkel des abgestrahlten Lichts zur Ausleuchtung auch kurzer Werkzeugenden kann durch die Neigung der Reflektorfläche leicht eingestellt werden.According to the invention, a reflector surface inside the housing is arranged outside the transparent element such that the light can be deflected via the reflector surface into the light entry surface of the transparent element. The reflector surface may additionally concentrate the light directed into the transparent element. An angle of the radiated light for illumination even short tool ends can be easily adjusted by the inclination of the reflector surface.

Eine Ausbreitung des Lichts zwischen Leuchtelement und transparentem Element kann bevorzugt lichtleiterlos erfolgen. Das Licht zwischen Leuchtelement und transparentem Element breitet sich in einer Luftstrecke aus.A propagation of the light between the luminous element and the transparent element can preferably take place without a light guide. The light between the light element and the transparent element spreads in an air gap.

Das Leuchtelement kann vorteilhaft beabstandet zum transparenten Element angeordnet sein. So kann das Leuchtelement z.B. am Getriebegehäuse nahe der Werkzeugaufnahme angeordnet sein. Möglich ist auch eine Anordnung der Arbeitsfeldbeleuchtung im unterhalb des Handgriffs liegenden Gehäusebereich, etwa oberhalb eines Akkupacks, der zur Stromversorgung des Motors der Werkzeugmaschine dient. Die Reflektorfläche kann räumlich geeignet zum Leuchtelement und zum transparenten Element angeordnet sein, um die Umlenkung des Lichts vom Leuchtelement zum transparenten Element zu bewirken.The luminous element can advantageously be arranged at a distance from the transparent element. Thus, the luminous element may be e.g. be arranged on the gear housing near the tool holder. It is also possible to arrange the working field illumination in the housing area located below the handle, for instance above a battery pack which serves to supply power to the motor of the machine tool. The reflector surface may be arranged spatially suitable for the luminous element and the transparent element in order to effect the deflection of the light from the luminous element to the transparent element.

Alternativ kann das Leuchtelement in eine Aussparung des transparenten Elements eingreifen. Das transparente Element kann hier bevorzugt als Prisma ausgebildet sein, in welches das Leuchtelement eingeschoben ist. Die Reflektorfläche kann dann z.B. eine verspiegelte Prismenfläche sein.Alternatively, the luminous element can engage in a recess of the transparent element. The transparent element may be formed here preferably as a prism, in which the lighting element is inserted. The reflector surface may then be e.g. be a mirrored prism surface.

Bevorzugt kann die Reflektorfläche metallisch beschichtet sein, um das Licht umzulenken. Dies ist sowohl für vom transparenten Element getrennte wie auch im transparenten Element ausgebildete Reflektorflächen möglich.Preferably, the reflector surface may be metallically coated to redirect the light. This is possible both for separate from the transparent element as well as in the transparent element reflector surfaces.

Die Reflektorfläche kann so angeordnet sein, dass sie eine Totalreflexion des Lichts ermöglicht und das Licht auf diese Weise umlenkt und zur Lichtaustrittsfläche des transparenten Elements leitet. Dies ist besonders zweckmäßig, wenn die Reflektorfläche Bestandteil des transparenten Elements ist.The reflector surface can be arranged so that it allows a total reflection of the light and deflects the light in this way and leads to the light exit surface of the transparent element. This is particularly useful when the reflector surface is part of the transparent element.

In einer günstigen Weiterbildung kann die Reflektorfläche gewölbt sein, um z.B. einen Fokussiereffekt des Lichts zu bewirken.In a favorable development, the reflector surface may be arched to form e.g. to effect a focusing effect of the light.

In einer vorteilhaften Ausgestaltung kann das transparente Element an ein Schaltbetätigungselement angrenzen. Dadurch kann die Arbeitsfeldbeleuchtung auch für kurze Einsatzwerkzeuge besonders Platz sparend angeordnet werden.In an advantageous embodiment, the transparent element may adjoin a switching actuating element. As a result, the working area lighting can be arranged in a particularly space-saving manner, even for short application tools.

Günstigerweise kann das Leuchtelement beim Drücken eines Schaltbetätigungselements aktivierbar sein, bevor ein Motor durch das Schaltbetätigungselement einschaltbar ist. Die Arbeitsfeldbeleuchtung kann dann bereits aktiv sein und das Arbeitsfeld ausleuchten, bevor sich der Motor zu drehen beginnt. Dies erlaubt ein genaueres Arbeiten und Positionieren der Werkzeugmaschine.Conveniently, the light-emitting element can be activated when a shift operating element is pressed, before a motor can be switched on by the shift operating element. The workfield lighting can then be already active and illuminate the work area before the engine starts to turn. This allows a more accurate work and positioning of the machine tool.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen sind Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawings, the description and the claims contain numerous features in combination. The skilled person will become the characteristics expediently consider individually and summarize meaningful further combinations.

Es zeigen:

Fig. 1
einen Schnitt durch eine bevorzugte Ausgestaltung einer akkubetriebene Elektrowerkzeugmaschine mit einer bevorzugten Arbeitsfeldbeleuchtung;
Fig. 2
ein Detail der bevorzugten Arbeitsfeldbeleuchtung in Fig. 1;
Fig. 3
einen Schnitt durch eine Ausgestaltung einer akkubetriebene Elektrowerkzeugmaschine mit einer Arbeitsfeldbeleuchtung, die keine Ausführungsform der Erfindung darstellt;
Fig. 4
ein Detail der Arbeitsfeldbeleuchtung in Fig. 3; und
Fig. 5
ein Detail einer Ausgestaltung einer Werkzeugmaschine, die keine Ausführungsform der Erfindung darstellt.
Show it:
Fig. 1
a section through a preferred embodiment of a battery-powered power tool with a preferred working field illumination;
Fig. 2
a detail of the preferred working area lighting in Fig. 1 ;
Fig. 3
a section through an embodiment of a battery-powered power tool with a working field illumination, which is not an embodiment of the invention;
Fig. 4
a detail of the working area lighting in Fig. 3 ; and
Fig. 5
a detail of an embodiment of a machine tool, which is not an embodiment of the invention.

Ausführungsformen der ErfindungEmbodiments of the invention

In den Figuren sind gleiche oder gleich wirkende Elemente mit denselben Bezugszeichen beziffert.In the figures, the same or equivalent elements are numbered by the same reference numerals.

Zur Erläuterung der Erfindung zeigen die Fig. 1 und 2 einen Schnitt als durch eine Werkzeugmaschine 10 in einer bevorzugten Ausgestaltung. Fig. 2 illustriert ein Detail der Ausgestaltung.To illustrate the invention show the Fig. 1 and 2 a section than by a machine tool 10 in a preferred embodiment. Fig. 2 illustrates a detail of the embodiment.

Die beispielhaft als akkubetriebene Elektrowerkzeugmaschine ausgebildete Werkzeugmaschine 10 mit einem insgesamt mit 12 gezeichneten Gehäuse umfasst einen Motor 14 in einem Motorgehäuse 28a mit einem daran in Richtung einer Werkzeugaufnahme-Achse 24 angeschlossenen Getriebe 16, das in einem nicht näher bezeichneten Getriebegehäuse angeordnet ist, sowie daran anschließend eine Werkzeugaufnahme 22 für ein nicht dargestelltes Einsatzwerkzeug. Unterhalb des Motors 14 und angrenzend an diesen ist ein Drehrichtungsumschalter 26 angeordnet. Das Einsatzwerkzeug kann z.B. drehend und/oder schlagend angetrieben sein. Unterhalb des Motors 14 ist ein Schalter 18 zum Ein- und Ausschalten des Motors 14 angeordnet, welcher über ein Schalterbetätigungselement 20 von einem Bediener der Werkzeugmaschine 10 betätigt werden kann. Unterhalb des Schalterbetätigungselements 20 schließt sich ein Griffteil 28b an, in dem im unteren Bereich ein nicht näher bezeichnetes Akkupack eingesetzt ist.The machine tool 10 embodied by way of example as a battery-powered electric machine tool with a housing, which is shown as a whole with 12, comprises a motor 14 in a motor housing 28a with a gear 16 connected thereto in the direction of a tool holder axis 24, which is arranged in an unspecified transmission housing, and then a tool holder 22 for an unillustrated insert tool. Below the motor 14 and adjacent to this a direction of rotation switch 26 is arranged. The insert tool can be driven, for example, rotating and / or beating. Below the motor 14, a switch 18 for switching on and off of the motor 14 is arranged, which can be actuated via a switch actuator 20 by an operator of the machine tool 10. Below the switch actuating element 20, a grip part 28b connects, in which a battery pack unspecified is used in the lower area.

Die Werkzeugmaschine 10 weist eine in dem Gehäuse 12 angeordnete Arbeitsfeldbeleuchtung auf, die einen Gehäusebereich 12a bildet, wobei die Arbeitsfeldbeleuchtung ein Leuchtmittel 30 und ein transparentes Element 50 umfasst. Aus dem transparenten Element 50 ist Licht des Leuchtmittels 30 zum Arbeitsfeld vor der Werkzeugaufnahme 22 hin auskoppelbar, wobei ein Lichtstrahl 56 zwischen dem Leuchtmittel 30 und dem transparenten Element 50 an einer Reflektorfläche 40 umlenkbar ist. Eine Ausbreitung des Lichts zwischen Leuchtelement 30 und transparentem Element 50 kann durch eine Luftstrecke, insbesondere ohne Lichtleiter, erfolgen.The machine tool 10 has a working field illumination arranged in the housing 12, which forms a housing region 12a, the working field illumination comprising a luminous means 30 and a transparent element 50. Light from the luminous means 30 can be coupled out of the transparent element 50 to the working field in front of the tool holder 22, wherein a light beam 56 can be deflected between the luminous means 30 and the transparent element 50 on a reflector surface 40. A propagation of the light between the luminous element 30 and the transparent element 50 can take place through an air gap, in particular without a light guide.

Das transparente Element 50 bildet einen Bereich 12a des Gehäuses 12, d.h. es durchsetzt die Gehäuseschale und ragt mit seiner Lichteintrittsfläche 52 in das Innere des Gehäuses 12 und mit seiner Lichtaustrittsfläche 54 nach außen auf die Außenseite des Gehäuses 12.Die Lichteintrittsfläche 52 ist zur Reflektorfläche 40 hin gerichtet.The transparent element 50 forms a portion 12a of the housing 12, i. it passes through the housing shell and protrudes with its light entrance surface 52 into the interior of the housing 12 and with its light exit surface 54 to the outside on the outside of the housing 12.The light entrance surface 52 is directed towards the reflector surface 40.

Die Reflektorfläche 40 ist durch ein verspiegeltes, insbesondere metallisiertes Element gebildet, das zu dem transparenten Element 50 beabstandet und auf einem Träger 42 angeordnet ist. Das Leuchtelement 30 ist an der Unterseite des Getriebegehäuses angeordnet und leuchtet zur Reflektorfläche 40 (in der Zeichnung nach unten). Das Leuchtelement 30 kann z.B. eine Glühbirne oder eine Leuchtdiode (LED, OLED) sein. Im Ausführungsbeispiel ist das Leuchtelement 30 als eine auf eine Platine montierte LED (SMD-LED) dargestellt.The reflector surface 40 is formed by a mirrored, in particular metallized element, which is spaced from the transparent element 50 and arranged on a carrier 42. The light-emitting element 30 is arranged on the underside of the transmission housing and illuminates the reflector surface 40 (in the Drawing down). The light-emitting element 30 can be, for example, a light bulb or a light-emitting diode (LED, OLED). In the exemplary embodiment, the light-emitting element 30 is shown as a mounted on a board LED (SMD LED).

Das transparente Element 50 ist in dem Bereich der Werkzeugmaschine 10 angeordnet, der sich zwischen dem Schalterbetätigungselement 20 und dem Getriebe 14 befindet und grenzt an das Schalterbetätigungselement 20 an. Das transparente Element kann aus Kunststoff sein, wie etwa PMMA (Polymethylmethacrylat), PC (Polycarbonat) oder PS (Polystyrol) oder dergleichen.The transparent element 50 is arranged in the region of the machine tool 10 which is located between the switch actuating element 20 and the gear 14 and adjoins the switch actuating element 20. The transparent member may be made of plastic such as PMMA (polymethyl methacrylate), PC (polycarbonate) or PS (polystyrene) or the like.

Fig. 3 und 4 zeigen eine einen Schnitt als durch eine Werkzeugmaschine 10 in einer Ausgestaltung, die keine Ausführungsform der Erfindung darstellt. Fig. 4 illustriert ein Detail der Ausgestaltung. Fig. 3 and 4 Figure 1 shows a section as through a machine tool 10 in an embodiment which does not constitute an embodiment of the invention. Fig. 4 illustrates a detail of the embodiment.

Die beispielhaft als akkubetriebene Elektrowerkzeugmaschine ausgebildete Werkzeugmaschine 10 mit einem insgesamt mit 12 bezeichneten Gehäuse umfasst wie im ersten Ausführungsbeispiel einen Motor 14 in einem Motorgehäuse 28a mit einem daran in Richtung einer Werkzeugaufnahme-Achse 24 angeschlossenen Getriebe 16, das in einem nicht näher bezeichneten Getriebegehäuse angeordnet ist, sowie daran anschließend eine Werkzeugaufnahme 22 für ein nicht dargestelltes Einsatzwerkzeug. Unterhalb des Motors 14 und angrenzend an diesen ist ein Drehrichtungsumschalter 26 angeordnet. Das Einsatzwerkzeug kann z.B. drehend und/oder schlagend angetrieben sein. Unterhalb des Motors 14 ist ein Schalter 18 zum Ein- und Ausschalten des Motors 14 angeordnet, welcher über ein Schalterbetätigungselement 20 von einem Bediener der Werkzeugmaschine 10 betätigt werden kann. Unterhalb des Schalterbetätigungselements 20 schließt sich ein Griffteil 28b an, in dem im unteren Bereich ein nicht näher bezeichnetes Akkupack eingesetzt ist.The example designed as a battery-powered power tool machine tool 10 with a total of 12 designated housing comprises as in the first embodiment, a motor 14 in a motor housing 28a with a connected thereto in the direction of a tool holder axis 24 gear 16, which is arranged in a transmission housing unspecified , And then a tool holder 22 for an unillustrated insert tool. Below the motor 14 and adjacent to this a direction of rotation switch 26 is arranged. The insert tool can be driven, for example, rotating and / or beating. Below the motor 14, a switch 18 for switching on and off of the motor 14 is arranged, which can be actuated via a switch actuator 20 by an operator of the machine tool 10. Below the switch actuating element 20, a grip part 28b connects, in which a battery pack unspecified is used in the lower area.

Die Werkzeugmaschine 10 weist eine in dem Gehäuse 12 angeordnete Arbeitsfeldbeleuchtung auf, die einen Gehäusebereich 12a bildet, wobei die Arbeitsfeldbeleuchtung ein Leuchtmittel 30 und ein transparentes Element 50 umfasst. Aus dem transparenten Element 50 ist Licht des Leuchtmittels 30 zum Arbeitsfeld vor der Werkzeugaufnahme 22 hin auskoppelbar, wobei ein Lichtstrahl 56 zwischen dem Leuchtmittel 30 und dem transparenten Element 50 an einer Reflektorfläche 40 umlenkbar ist. Eine Ausbreitung des Lichts zwischen Leuchtelement 30 und transparentem Element 50 kann durch eine Luftstrecke, insbesondere ohne Lichtleiter, erfolgen.The machine tool 10 has a working field illumination arranged in the housing 12, which forms a housing region 12a, the working field illumination comprising a luminous means 30 and a transparent element 50. Light from the luminous means 30 can be coupled out of the transparent element 50 to the working field in front of the tool holder 22, wherein a light beam 56 can be deflected between the luminous means 30 and the transparent element 50 on a reflector surface 40. A propagation of the light between the luminous element 30 and the transparent element 50 can take place through an air gap, in particular without a light guide.

Das transparente Element 50 bildet einen Bereich 12a des Gehäuses 12, d.h. es durchsetzt die Gehäuseschale und ragt mit seiner Lichteintrittsfläche 52 in das Innere des Gehäuses 12 und mit seiner Lichtaustrittsfläche 54 nach außen auf die Außenseite des Gehäuses 12. Das Leuchtelement 30 kann z.B. eine Glühbirne oder eine Leuchtdiode (LED, OLED) sein. Im Ausführungsbeispiel ist das Leuchtelement 30 als eine auf eine Platine montierte LED (SMD-LED) dargestellt.The transparent element 50 forms a portion 12a of the housing 12, i. it passes through the housing shell and protrudes with its light entry surface 52 into the interior of the housing 12 and with its light exit surface 54 to the outside on the outside of the housing 12. The light-emitting element 30 may e.g. a light bulb or a light emitting diode (LED, OLED). In the exemplary embodiment, the light-emitting element 30 is shown as a mounted on a board LED (SMD LED).

Die Reflektorfläche 40 ist hier ein Bestandteil des transparenten Elements 50, wobei diese durch eine Fläche gebildet ist, die unter einem Winkel zu der Hauptabstrahlungsrichtung des Leuchtelements 30 geneigt ist, welcher zur Totalreflexion des Lichts in Richtung Lichtaustrittsfläche 54 führt. Die Lichteintrittsfläche 52 ist zum Leuchtelement 30 hin gerichtet.The reflector surface 40 is here a component of the transparent element 50, this being formed by a surface which is inclined at an angle to the main emission direction of the luminous element 30, which leads to total reflection of the light in the direction of the light exit surface 54. The light entry surface 52 is directed toward the luminous element 30.

Das transparente Element 50 ist in dem Bereich der Werkzeugmaschine 10 angeordnet, der sich zwischen dem Schalterbetätigungselement 20 und dem Getriebe 14 befindet und grenzt an das Schalterbetätigungselement 20 an. Das transparente Element kann aus Kunststoff sein, wie etwa PMMA (Polymethylmethacrylat), PC (Polycarbonat) oder PS (Polystyrol) oder dergleichen.The transparent element 50 is arranged in the region of the machine tool 10 which is located between the switch actuating element 20 and the gear 14 and adjoins the switch actuating element 20. The transparent member may be made of plastic such as PMMA (polymethyl methacrylate), PC (polycarbonate) or PS (polystyrene) or the like.

Fig. 5 zeigt eine weitere Ausgestaltung einer Werkzeugmaschine 10 mit einer Arbeitsfeldbeleuchtung, die keine Ausführungsform der Erfindung darstellt. Die Werkzeugmaschine 10 entspricht in ihrem Aufbau den Werkzeugmaschinen in Fig. 1 und 3, auf die zur detaillierten Beschreibung verwiesen wird. Fig. 5 shows a further embodiment of a machine tool 10 with a working field illumination, which is not an embodiment of the invention. The machine tool 10 corresponds in its construction to the machine tools in Fig. 1 and 3 which is referred to for a more detailed description.

Ein transparentes Element 50 bildet einen Bereich 12a eines Gehäuses 12 der Werkzeugmaschine 10. Das transparente Element 50 ist in diesem Ausführungsbeispiel als Prisma ausgebildet. Das Prisma weist eine Aussparung 58 auf, in welche ein Leuchtelement 30 eingeschoben ist. Das Leuchtelement 30 ist an einer Unterseite eines Getriebegehäuses angeordnet.A transparent element 50 forms a region 12a of a housing 12 of the machine tool 10. The transparent element 50 is formed in this embodiment as a prism. The prism has a recess 58 into which a lighting element 30 is inserted. The luminous element 30 is arranged on an underside of a transmission housing.

Ein Lichtstrahl 56 aus dem Leuchtelement 30 wird an einer Reflektorfläche 40 zur Lichtaustrittsfläche 54 des transparenten Elements 50 hin umgelenkt, um ein Arbeitsfeld vor einer Werkzeugaufnahme 22 der Werkzeugmaschine 10 zu beleuchten. Die Reflektorfläche ist eine verspiegelte Prismenfläche, die unter einem geeigneten Winkel zum Leuchtelement 30 angeordnet ist.A light beam 56 from the luminous element 30 is deflected at a reflector surface 40 towards the light exit surface 54 of the transparent element 50 in order to illuminate a working field in front of a tool holder 22 of the machine tool 10. The reflector surface is a mirrored prism surface which is arranged at a suitable angle to the luminous element 30.

Claims (14)

  1. Machine tool having working field illumination arranged in a housing (12), comprising a luminous means (30) and a transparent element (50) which forms a region (12a) of the housing (12) and from which light can be coupled out from the luminous means (30) towards the working field, it being possible for a light beam (56) between the luminous means (30) and the transparent element (50) to be deflected at a reflector surface (40), wherein the reflector surface (40) is arranged outside the transparent element (50) in such a way that the light can be deflected via the reflector surface (40) into a light entrance surface (52) of the transparent element (50), characterized in that the luminous means (30) shines with a main emission direction towards the reflector surface (40).
  2. Machine tool according to Claim 1, characterized in that a light-emitting diode, as the luminous means (30), shines with its main emission direction downwards towards the reflector surface (40) based on a tool holder axis (24) of the machine tool (10).
  3. Machine tool according to either of the preceding claims, characterized in that the luminous means (30) is arranged on the underside of the gearbox.
  4. Machine tool according to one of the preceding claims, characterized in that the luminous means (30) is an LED mounted on a printed circuit board.
  5. Machine tool according to one of the preceding claims, characterized in that the light is expanded between the luminous means (30) and transparent element (50) without the use of a fibre-optic conductor.
  6. Machine tool according to one of the preceding claims, characterized in that the luminous means (30) is arranged at a spacing from the transparent element (50).
  7. Machine tool according to one of Claims 1 to 5, characterized in that the luminous means (30) engages in a cutout (58) of the transparent element (50).
  8. Machine tool according to one of the preceding claims, characterized in that the reflector surface (40) is metal-coated.
  9. Machine tool according to one of the preceding claims, characterized in that the reflector surface (40) deflects the light by total reflection.
  10. Machine tool according to one of the preceding claims, characterized in that the reflector surface (40) is cambered.
  11. Machine tool according to one of the preceding claims, characterized in that the transparent element (50) is adjacent to a switch actuation element (20).
  12. Machine tool according to one of the preceding claims, characterized in that the luminous means (30) can be activated upon the pressing of a switch actuation element (20) before a motor (14) can be switched on by the switch actuation element (20).
  13. Machine tool according to one of the preceding claims, characterized in that the reflector surface (40) is formed by a mirrored, in particular metallized, element which is arranged at a spacing from the transparent element (50) and is arranged on a carrier (42).
  14. Machine tool according to one of the preceding claims, characterized in that the transparent element (50) is arranged in a region of the machine tool which is between the switch actuation element (20) and a gear (14) and is adjacent to the switch actuation element (20).
EP13150831.9A 2007-12-20 2008-11-11 Machine tool having working field illumination Active EP2583795B1 (en)

Applications Claiming Priority (2)

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DE102007061741A DE102007061741A1 (en) 2007-12-20 2007-12-20 Machine tool with a work area lighting
EP08865402A EP2222442B1 (en) 2007-12-20 2008-11-11 Machine tool having working field illumination

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EP08865402A Division EP2222442B1 (en) 2007-12-20 2008-11-11 Machine tool having working field illumination

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EP2583795A1 EP2583795A1 (en) 2013-04-24
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DE102007061741A1 (en) 2009-06-25
CN101903138B (en) 2015-11-25
US20100277897A1 (en) 2010-11-04
WO2009080404A1 (en) 2009-07-02
EP2583795A1 (en) 2013-04-24
US20130163230A1 (en) 2013-06-27
US8382308B2 (en) 2013-02-26
EP2222442B1 (en) 2013-03-20
US9481081B2 (en) 2016-11-01
CN101903138A (en) 2010-12-01
EP2222442A1 (en) 2010-09-01

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