EP1293298A2 - Power tool with dust extraction - Google Patents

Power tool with dust extraction Download PDF

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Publication number
EP1293298A2
EP1293298A2 EP02017021A EP02017021A EP1293298A2 EP 1293298 A2 EP1293298 A2 EP 1293298A2 EP 02017021 A EP02017021 A EP 02017021A EP 02017021 A EP02017021 A EP 02017021A EP 1293298 A2 EP1293298 A2 EP 1293298A2
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EP
European Patent Office
Prior art keywords
dust
dust box
hand tool
motor
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02017021A
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German (de)
French (fr)
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EP1293298B1 (en
EP1293298A3 (en
Inventor
Steffen Wuensch
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP1293298A2 publication Critical patent/EP1293298A2/en
Publication of EP1293298A3 publication Critical patent/EP1293298A3/en
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Publication of EP1293298B1 publication Critical patent/EP1293298B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided

Definitions

  • the invention is based on a hand machine tool the type of claim 1.
  • the performance of the well-known dust box is due to the limited suction unit integrated in the hand tool, that of a fan and associated air duct system exists and in terms of performance and efficiency can hardly be improved.
  • the hand-held machine tool according to the invention with the features of claim 1 has the advantage that the dust extraction performance compared to the known handheld power tools Dust box is significantly increased without changing the hand machine tool integrated dust extraction system and without increased fine dust emissions.
  • the fact that the motor is a low voltage motor is one trouble-free power supply possible via busbars, which is covered by the dust collection box and the dust outlet nozzle and the housing of the hand machine tool are led.
  • the hand-held power tool supplied with mains voltage contains a transformer is a safe one Power supply for the dust extraction unit with low voltage possible.
  • the motor is equipped as a DC motor is, it is powered by rechargeable batteries or batteries easily possible.
  • the dust box itself has an upper, airtight Carries the emptying lid, the dust box can be emptied without the separate dust extraction unit in contact with the dust comes.
  • the motor has a fan at each shaft end for dust extraction is the one that causes the dust extraction Airflow particularly effective.
  • the invention is based on an associated Drawing explained.
  • FIG. 1 shows a hand tool 10, which is an orbital sander is designed. This has a housing 12 with a upper handle 14, which is in the viewing direction extends to the left, with a from its rear end Electrical connection cable 15 emerges. Protrudes from the handle 14 down a manual button 16 one not closer designated switch for commissioning the hand tool 10th
  • An electric motor 18 is located in the front area of the housing 12 arranged. Its output shaft 20 is non-rotatable with a Fan 22 coupled and rotationally driving with its free end connected to a grinding plate 24.
  • the sanding plate 24 carries axially continuous dust extraction openings 26, due to the resulting grinding dust when working with the Hand tool 10 from an unspecified Workpiece surface can be extracted and via a dust outlet nozzle 28 can be blown into a dust box 36.
  • the Dust box 36 carries in the hand machine tool 10 facing Area a dust inlet connector 35. This spans with its inside diameter the outside diameter of the Dust outlet connector 28 and is detachably fastened there.
  • the dust box 36 can be closed airtight with a lid 38 and open it to empty dust. That lid 38 carries an upward-pointing retaining hook 40, the one Engagement opening 29 of the lower, bow-like area of the Handle 14 passes and in this way the storage box 36th additionally secured on the housing 12.
  • the cover 38 engages with its circumferential locking groove 41 a matching, circumferential detent spring 43 through the outer wall the dust box 36 is formed.
  • the dust inlet nozzle 35 goes to the left in the viewing direction - i.e. to the rear at the bottom in a floor 39 and laterally in side walls 42 ( Figure 7) about.
  • the bottom 39 sits on a transverse one lower locking groove 41 leading further back in a floor 47 of a suction unit 48, which is a motor 50 with upper and lower fan 52, 54 contains and rear is completed by a rear wall 421. This goes above in a further detent spring 43 over that of the detent groove 41 of a motor cover 45 is overlapped.
  • the motor cover 45 is to the right in the viewing direction angled below and wearing in the angled, with openings 450 provided partition 44 a microfilter 46, the the openings 450 serving as air outlet openings permeable to air, grips dust-retaining.
  • the dust outlet connection 28 carries contact rails 30 at the top, each in a bent, leaf spring-like contact tongue 32 ends with those on top of the dust inlet connection 35 seated contact tabs 34 can be coupled.
  • the contact flags 34 lead electrically behind to the motor 50, while the contact rails 30 forward into the interior of the Housing 12 to a power supply device, e.g. one lead unspecified battery or transformer.
  • the dust box 36 is at the dust outlet connection 28 of the hand power tool 10 via locking means 37 ( Figure 2) releasably locked.
  • Figure 1 shows that the dust inlet port 35 is a chassis-like Forms part of the dust box 36, to which the dust box bottom 39 or 47, connect side walls 42 and rear wall 421.
  • the box thus formed which is open at the top, can be closed, by first the motor cover 45 with its right angle facing downwards, carrying the microfilter 46 Partition 44 engages by means of tongue and groove connection 41, 43 is attached. Then the dustproof cover 38 with its locking groove 41 over the locking springs 43 of the dust inlet connector 35 or the side walls 42 and the partition 450 clipped in.
  • the engine cover 45 can be common only then with the partition 450 and the filter 46 the dust box 36 can be released if the cover 38 is removed beforehand has been. This is an unwanted opening of the engine cover 34 practically excluded and collected in the dust box 36 Grinding dust does not get to the motor 50 because he normally emptied after opening the lid 38 has been.
  • Dust residues still attached to the microfilter 46 are removed during removal of the engine compartment cover 45 rather into that facing away from the engine 50 Side of the dust collection chamber than enter the engine compartment fall. They therefore pose no danger to the engine 50 and can easily be done by tapping adherent Grinding dust can be freed.
  • Closing the lid of the dust box 36 is in reverse Sequence easy to accomplish as when emptying.
  • FIG. 2 shows handheld power tool 10 according to FIG. 1 in a view from above, with the previous ones FIG. 1 does not explain reference symbols again shall be. It goes beyond Figure 1 the upper, airtight lid 38 of the dust box 36 is clearly recognizable, and the engine cover 45 with the air outlet holes 440th
  • Figure 3 shows a plan view of the dust box 36, with about Figures 1 and 2 going beyond the microfilter 46 and Contact tabs 34 in the area of the inlet connector 35 in particular are clearly recognizable.
  • the one designed as a pleated filter Microfilter 46 protrudes into the center of the dust box 36.
  • FIG. 4 shows the dust box 36 without a dustproof cover 38 and without engine cover 45 from above and the engine 50 with its Electrical connecting cables 51 merging into contact tabs 34.
  • the motor 50 has holding arms 49. This are screwed with projections 420 of the side walls 42.
  • Figure 5 shows a plan view of the motor cover 45 with the upper air outlet holes 440 and the angled down in the drawing plane extending partition 44 with the holes 450 area with the microfilter 46.
  • Figure 6 shows the cross section of the inlet channel 35 and the Design of the contact lugs 34.
  • FIG. 7 shows a cross section of the dust box 36 with a view in FIG the inside of the box 36 with a view of the front side wall 42 with the dust inlet connection 35.
  • Figure 8 shows a cross section of the dust box 36 in the area of the engine 50 with the engine cover 45 with its upright extending downward, carrying the microfilter 46 Area 44 with the holes 450. It can also be seen that the Motor 50 with its fans 52, 54 in its own housing sits with bracket arms 49, by means of which he attaches himself to the Cantilever 420 is supported or anchored thereon.
  • FIG. 9 shows an enlarged section of the one in FIG. 1 of an enclosed area between the dust outlet pipe 28 and dust inlet connection 35, being clear the contact tabs fixed to the top of the dust inlet connection 35 34 and the machine-side electrical contact rail 30 with its curved contact tongue 32 can be seen.
  • Figure 10 shows an enlarged section of the with the engine cover 45 connected side wall 47 of the dust box 36.
  • Figure 11 shows an enlarged section of the one Circle surrounding area of the dust inlet connection 35 according to Figure 6, the fixed points 58 in the form of thermal deformed plastic tabs fixing the contact tabs 34 58 are recognizable.
  • Safety valve In the dust inlet connection 35 of the dust box 36 is a not shown Safety valve arranged. This will formed by elastic flaps that are automatically resilient close and open the air flowing in become and an unhindered entry of Allow grinding dust. The ones that close without air flow Valve flaps of the safety valve prevent the unwanted discharge of collected grinding dust through the Dust inlet nozzle into the dust outlet tube or with the dust box removed to the outside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Manipulator (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Portable Power Tools In General (AREA)

Abstract

The power tool (10) has a dust outlet connection (28) designed to receive a dust box (36). The dust box carries a dust suction unit on its free end. This unit consists of a motor (50) and a fan (52, 54). The dust suction unit may be integrated into the dust box. it may be possible to connect it by contact rails to a power supply.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Handwerkzeugmaschine nach der Gattung des Anspruches 1.The invention is based on a hand machine tool the type of claim 1.

Aus der GB 2,343,393 ist eine Handwerkzeugmaschine mit einer Staubbox bekannt, deren Staubabsaugung einen hohen Wirkungsgrad hat bei gleichzeitig minimaler Feinstaubemission.From GB 2,343,393 is a hand tool with a Dust box known, whose dust extraction is highly efficient has at the same time minimal fine dust emissions.

Die Leistungsfähigkeit der bekannten Staubbox ist durch die in die Handwerkzeugmaschine integrierte Absaugeinheit begrenzt, die aus einem Ventilator und zugehörigem Luftführungssystem besteht und die bezüglich Leistung und Wirkungsgrad kaum noch verbesserbar ist.The performance of the well-known dust box is due to the limited suction unit integrated in the hand tool, that of a fan and associated air duct system exists and in terms of performance and efficiency can hardly be improved.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Handwerkeugmaschine mit den Merkmalen des Anspruches 1 hat den Vorteil, daß die Staubabsaugleistung gegenüber den bekannten Handwerkzeugmaschinen mit Staubbox deutlich erhöht ist, ohne Änderung des in die Handwerkzeugmaschine integrierten Staubabsaugsystems und ohne erhöhte Feinstaubemission. The hand-held machine tool according to the invention with the features of claim 1 has the advantage that the dust extraction performance compared to the known handheld power tools Dust box is significantly increased without changing the hand machine tool integrated dust extraction system and without increased fine dust emissions.

Dadurch, daß der Motor ein Niederspannungsmotor ist, ist eine problemlose Stromversorgung über Stromschienen möglich, die verdeckt durch die Staubsammelbox hindurch und den Staubaustrittsstutzen und das Gehäuse der Handwerkzeugmaschine geführt sind.The fact that the motor is a low voltage motor is one trouble-free power supply possible via busbars, which is covered by the dust collection box and the dust outlet nozzle and the housing of the hand machine tool are led.

Dadurch, daß die mit Netzspannung versorgte Handwerkzeugmaschine einen Transformator enthält, ist eine gefahrlose Stromversorgung der Staubabsaugeinheit mit Niederspannung möglich.Because the hand-held power tool supplied with mains voltage contains a transformer is a safe one Power supply for the dust extraction unit with low voltage possible.

Dadurch, daß der Motor als Gleichspannungsmotor ausgestattet ist, ist dessen Stromversorgung über Akkus oder Batterien bequem möglich.Because the motor is equipped as a DC motor is, it is powered by rechargeable batteries or batteries easily possible.

Dadurch, daß zwischen dem Motor und der Staubsammelbox eine herausnehmbare, luftdurchlässige Trennwand mit Mikrofilter angeordnet ist und daß dieses Volumen von einem luftdichten Deckel bedeckt ist, ist ein effektive Absaugen durch die Staubabsaugeinheit und ein besonders bequemes Reinigen des Mikrofilters möglich, indem die - insbesondere als hintere Stirnwand des Volumens ausgestaltete - Trennwand herausgenommen und ausgeklopft wird.The fact that between the engine and the dust box removable, air-permeable partition with microfilter is arranged and that this volume of an airtight Cover is an effective suction through the lid Dust extraction unit and a particularly convenient cleaning of the Microfilters possible by the - especially as the rear End wall of the volume designed - partition removed and knocked out.

Dadurch, daß die Staubbox selbst einen oberen, luftdichten Entleerungsdeckel trägt, ist die Staubbox leerbar, ohne daß die gesonderte Staubabsaugeinheit mit dem Staub in Kontakt kommt.Because the dust box itself has an upper, airtight Carries the emptying lid, the dust box can be emptied without the separate dust extraction unit in contact with the dust comes.

Dadurch, daß die Staubabsaugeinheit oben mit einem gelochten Deckel abgedeckt ist, der rechtwinklig abgeknickt in die Trennwand mit Mikrofilter übergeht, ist die Trennwand mit dem Filter besonders sicher in der Staubbox positioniert. The fact that the dust extraction unit is perforated at the top Cover is covered, which is bent at right angles in the Partition passes with microfilter, the partition is with position the filter particularly securely in the dust box.

Dadurch, daß im hinteren Bereich der Staubbox zwischen der Staubabsaugeinheit und der Handwerkzeugmaschine ein gesondertes Brückenteil vorgesehen ist, das Stromschienen enthält, die mit Motor und Trafo kuppelbar sind, können die Stromschienen besonders klein gehalten sowie eine mechanische Halterung geschaffen werden, die das hintere Ende der Staubsammelbox bzw. der Staubabsaugeinheit sicher an der Handwerkzeugmaschine festhält.The fact that in the rear of the dust box between the Dust extraction unit and the handheld machine tool a separate one Bridge part is provided, which contains busbars, which can be coupled to the motor and transformer, can Busbars kept particularly small and a mechanical Bracket to be created, which is the rear end of the Dust collection box or the dust extraction unit securely on the Hand machine tool holds.

Dadurch, daß der Motor an jedem Wellenende einen Ventilator zur Staubabsaugung trägt, ist der die Staubabsaugung bewirkende Luftstrom besonders effektiv.Because the motor has a fan at each shaft end for dust extraction is the one that causes the dust extraction Airflow particularly effective.

Zeichnungdrawing

Nachstehend ist die Erfindung anhand einer zugehörigen Zeichnung erläutert.The invention is based on an associated Drawing explained.

Es zeigen

  • Figur 1 einen Längsschnitt der erfindungsgemäßen Handwerkzeugmaschine mit Staubbox,
  • Figur 2 eine Ansicht der Handwerkzeugmaschine gemäß Figur 1 von oben,
  • Figur 3 eine Ansicht der Staubbox von oben,
  • Figur 4 die Staubbox gemäß Figur 3 ohne Deckel ,
  • Figur 5 eine Ansicht des Deckels der Saugeinheit von oben,
  • Figur 6 einen Querschnitt des Staubeintrittsbereichs der Staubbox,
  • Figur 7 einen Querschnitt der Staubbox,
  • Figur 8 einen Querschnitt der Staubbox im Bereich der Staubabsaugeinheit,
  • Figur 9 eine Vergrößerung des Längsschnitts des Staubaustrittstutzens mit angekuppelter Staubbox,
  • Figur 10 einen Querschnitt der Wandung der Staubbox im Bereich der Absaugeinheit und
  • Figur 11 einen Querschnitt des Staubeintrittstutzens mit Stromschienen.
    • Show it
  • FIG. 1 shows a longitudinal section of the hand tool according to the invention with dust box,
  • FIG. 2 shows a view of the handheld power tool according to FIG. 1 from above,
  • FIG. 3 shows a view of the dust box from above,
  • FIG. 4 shows the dust box according to FIG. 3 without a lid,
  • FIG. 5 shows a view of the cover of the suction unit from above,
  • FIG. 6 shows a cross section of the dust entry area of the dust box,
  • FIG. 7 shows a cross section of the dust box,
  • FIG. 8 shows a cross section of the dust box in the area of the dust extraction unit,
  • FIG. 9 shows an enlargement of the longitudinal section of the dust outlet connection with the dust box coupled,
  • 10 shows a cross section of the wall of the dust box in the area of the suction unit and
  • Figure 11 shows a cross section of the dust inlet connector with busbars.

    • Beschreibung des AusführungsbeispielsDescription of the embodiment

    Figur 1 zeigt eine Handwerkzeugmaschine 10, die als Schwingschleifer ausgestaltet ist. Diese hat ein Gehäuse 12 mit einem oberen Handgriff 14, der sich in Betrachtungsrichtung nach links erstreckt, wobei aus dessen hinterem Ende ein Elektroanschlußkabel 15 austritt. Aus dem Handgriff 14 ragt nach unten eine handbetätigbare Taste 16 eines nicht näher bezeichneten Schalters zur Inbetriebnahme der Handwerkzeugmaschine 10.Figure 1 shows a hand tool 10, which is an orbital sander is designed. This has a housing 12 with a upper handle 14, which is in the viewing direction extends to the left, with a from its rear end Electrical connection cable 15 emerges. Protrudes from the handle 14 down a manual button 16 one not closer designated switch for commissioning the hand tool 10th

    Im vorderen Bereich des Gehäuses 12 ist ein Elektromotor 18 angeordnet. Dessen Abtriebswelle 20 ist drehfest mit einem Ventilator 22 gekoppelt und mit ihrem freien Ende drehmitnehmend mit einem Schleifteller 24 verbunden. Der Schleifteller 24 trägt axial durchgehende Staubabsaugöffnungen 26, durch die anfallender Schleifstaub beim Arbeiten mit der Handwerkzeugmaschine 10 von einer nicht näher bezeichneten Werkstückoberfläche absaugbar ist und über einen Staubaustrittstutzen 28 in eine Staubbox 36 einblasbar ist. Die Staubbox 36 trägt in ihrem der Handwerkzeugmaschine 10 zugewandten Bereich einen Staubeintrittstutzen 35. Dieser übergreift mit seinem Innendurchmesser den Außendurchmesser des Staubaustrittsstutzens 28 und ist dort verrastbar lösbar befestigt.An electric motor 18 is located in the front area of the housing 12 arranged. Its output shaft 20 is non-rotatable with a Fan 22 coupled and rotationally driving with its free end connected to a grinding plate 24. The sanding plate 24 carries axially continuous dust extraction openings 26, due to the resulting grinding dust when working with the Hand tool 10 from an unspecified Workpiece surface can be extracted and via a dust outlet nozzle 28 can be blown into a dust box 36. The Dust box 36 carries in the hand machine tool 10 facing Area a dust inlet connector 35. This spans with its inside diameter the outside diameter of the Dust outlet connector 28 and is detachably fastened there.

    Die Staubbox 36 ist oben mit einem Deckel 38 luftdicht verschließbar und zur Staubentleerung zu öffnen. Dieser Deckel 38 trägt einen nach oben weisenden Haltehaken 40, der eine Eingriffsöffnung 29 des unteren, bügelartigen Bereichs des Handgriffes 14 durchtritt und auf diese Weise die Staubox 36 zusätzlich am Gehäuse 12 lagesichert. The dust box 36 can be closed airtight with a lid 38 and open it to empty dust. That lid 38 carries an upward-pointing retaining hook 40, the one Engagement opening 29 of the lower, bow-like area of the Handle 14 passes and in this way the storage box 36th additionally secured on the housing 12.

    Der Deckel 38 übergreift mit seiner umlaufenden Rastnut 41 eine passende, umlaufende Rastfeder 43, die durch die Außenwand der Staubbox 36 gebildet wird. Der Staubeintrittstutzen 35 geht in Betrachtungsrichtung nach links - also nach hinten - unten in einen Boden 39 und seitlich in Seitenwände 42 (Figur 7) über. Der Boden 39 setzt sich an einer quer verlaufenden unteren Rastnut 41 weiter nach hinten führend in einen Boden 47 einer Absaugeinheit 48 fort, die einen Motor 50 mit oberem und unterem Ventilator 52, 54 enthält und hinten durch eine Hinterwand 421 abgeschlossen ist. Diese geht oben in eine weitere Rastfeder 43 über, die von der Rastnut 41 eines Motordeckels 45 überrastend übergriffen wird.The cover 38 engages with its circumferential locking groove 41 a matching, circumferential detent spring 43 through the outer wall the dust box 36 is formed. The dust inlet nozzle 35 goes to the left in the viewing direction - i.e. to the rear at the bottom in a floor 39 and laterally in side walls 42 (Figure 7) about. The bottom 39 sits on a transverse one lower locking groove 41 leading further back in a floor 47 of a suction unit 48, which is a motor 50 with upper and lower fan 52, 54 contains and rear is completed by a rear wall 421. This goes above in a further detent spring 43 over that of the detent groove 41 of a motor cover 45 is overlapped.

    Der Motordeckel 45 ist in Betrachtungsrichtung nach rechts unten abgewinkelt und trägt in der abgewinkelten, mit Durchbrüchen 450 versehenen Trennwand 44 ein Mikrofilter 46, das die als Luftaustrittsöffnungen dienenden Durchbrüche 450 luftdurchlässig, staubrückhaltend übergreift.The motor cover 45 is to the right in the viewing direction angled below and wearing in the angled, with openings 450 provided partition 44 a microfilter 46, the the openings 450 serving as air outlet openings permeable to air, grips dust-retaining.

    Der Staubaustrittstutzen 28 trägt oben Kontaktschienen 30, die in je einer umgebogenen, blattfederartigen Kontaktzunge 32 enden, mit denen oben auf dem Staubeintrittstutzen 35 sitzende Kontaktfahnen 34 kuppelbar sind. Die Kontaktfahnen 34 führen elektrisch verbindend nach hinten zum Motor 50, während die Kontaktschienen 30 nach vorn in das Innere des Gehäuses 12 zu einer Stromversorgungseinrichtung, z.B. einem nicht näher bezeichneten Akku bzw. Transformator, führen.The dust outlet connection 28 carries contact rails 30 at the top, each in a bent, leaf spring-like contact tongue 32 ends with those on top of the dust inlet connection 35 seated contact tabs 34 can be coupled. The contact flags 34 lead electrically behind to the motor 50, while the contact rails 30 forward into the interior of the Housing 12 to a power supply device, e.g. one lead unspecified battery or transformer.

    Die Staubbox 36 ist am Staubaustrittsstutzen 28 der Handwerkzeugmaschine 10 über Verriegelungsmittel 37 (Figur 2) lösbar arretiert.The dust box 36 is at the dust outlet connection 28 of the hand power tool 10 via locking means 37 (Figure 2) releasably locked.

    Figur 1 zeigt, daß der Staubeintrittsstutzen 35 ein chassisartigen Teil der Staubbox 36 bildet, an den sich der Staubboxboden 39 bzw. 47, Seitenwände 42 und Hinterwand 421 anschließen. Die so gebildete, oben offene Box ist verschließbar, indem zunächst der Motordeckel 45 mit seiner rechtwinklig nach unten weisenden, den Mikrofilter 46 tragenden Trennwand 44 mittels Nut-Federverbindung 41, 43 einrastend befestigt wird. Anschließend wird der staubdichte Deckel 38 mit seiner Rastnut 41 über die Rastfedern 43 des Staubeintrittsstutzens 35 bzw. der Seitenwände 42 sowie der Trennwand 450 eingeklipst. Somit kann der Motordeckel 45 gemeinsam mit der Trennwand 450 und dem Filter 46 erst dann aus der Staubbox 36 gelöst werden, wenn zuvor der Deckel 38 entfernt wurde. Damit ist ein ungewolltes Öffnen des Motordekkels 34 praktisch ausgeschlossen und in der Staubbox 36 gesammelter Schleifstaub gelangt nicht an den Motor 50, weil er normalerweise bereits nach Öffnen des Deckels 38 entleert wurde.Figure 1 shows that the dust inlet port 35 is a chassis-like Forms part of the dust box 36, to which the dust box bottom 39 or 47, connect side walls 42 and rear wall 421. The box thus formed, which is open at the top, can be closed, by first the motor cover 45 with its right angle facing downwards, carrying the microfilter 46 Partition 44 engages by means of tongue and groove connection 41, 43 is attached. Then the dustproof cover 38 with its locking groove 41 over the locking springs 43 of the dust inlet connector 35 or the side walls 42 and the partition 450 clipped in. Thus, the engine cover 45 can be common only then with the partition 450 and the filter 46 the dust box 36 can be released if the cover 38 is removed beforehand has been. This is an unwanted opening of the engine cover 34 practically excluded and collected in the dust box 36 Grinding dust does not get to the motor 50 because he normally emptied after opening the lid 38 has been.

    Noch am Mikrofilter 46 hängende Staubreste werden beim Entfernen des Motorraumdeckels 45 eher in die vom Motor 50 abgewandte Seite des Staubsammelraums treten als in den Motorraum fallen. Sie stellen somit keine Gefahr für den Motor 50 dar und können leicht durch Abklopfen von anhaftendem Schleifstaub befreit werden.Dust residues still attached to the microfilter 46 are removed during removal of the engine compartment cover 45 rather into that facing away from the engine 50 Side of the dust collection chamber than enter the engine compartment fall. They therefore pose no danger to the engine 50 and can easily be done by tapping adherent Grinding dust can be freed.

    Das Schließen der Deckel der Staubbox 36 ist in umgekehrter Reihenfolge wie beim Entleeren leicht zu bewerkstelligen.Closing the lid of the dust box 36 is in reverse Sequence easy to accomplish as when emptying.

    Figur 2 zeigt die Handwerkzeugmaschine 10 gemäß Figur 1 in einer Ansicht von oben, wobei hier auf die zuvor schon zu Figur 1 erläutertern Bezugszeichen nicht noch einmal eingegangen werden soll. Dabei ist über die Figur 1 hinausgehend deutlich der obere, luftdichte Deckel 38 der Staubbox 36 erkennbar, sowie der Motordeckel 45 mit den Luftaustrittslöchern 440. FIG. 2 shows handheld power tool 10 according to FIG. 1 in a view from above, with the previous ones FIG. 1 does not explain reference symbols again shall be. It goes beyond Figure 1 the upper, airtight lid 38 of the dust box 36 is clearly recognizable, and the engine cover 45 with the air outlet holes 440th

    Figur 3 zeigt eine Draufsicht der Staubbox 36, wobei über die Figur 1 und 2 hinausgehend der Mikrofilter 46 und die Kontaktfahnen 34 im Bereich des Eintrittsstutzens 35 besonders gut erkennbar sind. Der als Faltenfilter ausgestaltete Mikrofilter 46 ragt in die Mitte der Staubbox 36 hinein.Figure 3 shows a plan view of the dust box 36, with about Figures 1 and 2 going beyond the microfilter 46 and Contact tabs 34 in the area of the inlet connector 35 in particular are clearly recognizable. The one designed as a pleated filter Microfilter 46 protrudes into the center of the dust box 36.

    Figur 4 zeigt die Staubbox 36 ohne staubdichten Deckel 38 und ohne Motordeckel 45 von oben und den Motor 50 mit seinen Elektroanschlußkabeln 51 übergehend in die Kontaktfahnen 34.FIG. 4 shows the dust box 36 without a dustproof cover 38 and without engine cover 45 from above and the engine 50 with its Electrical connecting cables 51 merging into contact tabs 34.

    Deutlich ist auch, daß der Motor 50 Haltearme 49 hat. Diese sind mit Auskragungen 420 der Seitenwände 42 verschraubt.It is also clear that the motor 50 has holding arms 49. This are screwed with projections 420 of the side walls 42.

    Figur 5 zeigt eine Draufsicht des Motordeckels 45 mit den oberen Luftaustrittslöchern 440 und der abgewinkelt nach unten in die Zeichenebene sich erstreckenden Trennwand 44 mit den Löchern 450 Bereich mit dem Mikrofilter 46.Figure 5 shows a plan view of the motor cover 45 with the upper air outlet holes 440 and the angled down in the drawing plane extending partition 44 with the holes 450 area with the microfilter 46.

    Figur 6 zeigt den Querschnitt des Eintrittskanals 35 und die Ausgestaltung der Kontaktfahnen 34.Figure 6 shows the cross section of the inlet channel 35 and the Design of the contact lugs 34.

    Figur 7 zeigt einen Querschnitt der Staubbox 36 mit Blick in das Innere der Box 36 mit Ansicht der vorderen Seitenwand 42 mit dem Staubeintrittsstutzen 35. Dabei werden Einzelheiten des luftdichten Deckels 38, seine Rastnut bzw. die Rastfeder 43 gezeigt. Deutlich ist auch das u-förmige Profil, das die Seitenwände 42 gemeinsam mit dem Boden 39 bilden.FIG. 7 shows a cross section of the dust box 36 with a view in FIG the inside of the box 36 with a view of the front side wall 42 with the dust inlet connection 35. Here are details of the airtight cover 38, its locking groove or the locking spring 43 shown. The U-shaped profile, which the Form side walls 42 together with the bottom 39.

    Figur 8 zeigt einen Querschnitt der Staubbox 36 im Bereich des Motors 50 mit dem Motordeckel 45 mit seinem sich senkrecht nach unten erstreckenden, den Mikrofilter 46 tragenden Bereich 44 mit den Löchern 450. Erkennbar ist auch, daß der Motor 50 mit seinen Ventilatoren 52, 54 in einem eigenen Gehäuse mit Halterarmen 49 sitzt, mittels derer er sich an den Auskragungen 420 abstützt bzw. daran verankert ist. Figure 8 shows a cross section of the dust box 36 in the area of the engine 50 with the engine cover 45 with its upright extending downward, carrying the microfilter 46 Area 44 with the holes 450. It can also be seen that the Motor 50 with its fans 52, 54 in its own housing sits with bracket arms 49, by means of which he attaches himself to the Cantilever 420 is supported or anchored thereon.

    Figur 9 zeigt einen vergrößerten Ausschnitt des in Figur 1 von einem Kreis eingeschlossenen Bereiches zwischen Staubaustrittsrohr 28 und Staubeintrittstutzen 35, wobei deutlich die oben am Staubeintrittstutzen 35 fixierten Kontaktfahnen 34 und die maschinenseitige Elektrokontaktschiene 30 mit ihrer gebogenen Kontaktzunge 32 erkennbar sind.FIG. 9 shows an enlarged section of the one in FIG. 1 of an enclosed area between the dust outlet pipe 28 and dust inlet connection 35, being clear the contact tabs fixed to the top of the dust inlet connection 35 34 and the machine-side electrical contact rail 30 with its curved contact tongue 32 can be seen.

    Figur 10 zeigt einen vergrößerten Ausschnitt der mit dem Motordeckel 45 verbundenen Seitenwand 47 der Staubbox 36.Figure 10 shows an enlarged section of the with the engine cover 45 connected side wall 47 of the dust box 36.

    Figur 11 zeigt einen vergrößerten Ausschnitt des von einem Kreis umgebenen Bereiches des Staubeintrittsstutzens 35 gemäß Figur 6, wobei die Fixpunkte 58 in Form von thermisch verformten, die Kontaktfahnen 34 fixierenden Kunststoffnokken 58 erkennbar sind.Figure 11 shows an enlarged section of the one Circle surrounding area of the dust inlet connection 35 according to Figure 6, the fixed points 58 in the form of thermal deformed plastic tabs fixing the contact tabs 34 58 are recognizable.

    Im Staubeintrittstutzens 35 der Staubbox 36 ist ein nichtdargestelltes Sicherheitsventil angeordnet. Dieses wird durch elastische Klappen gebildet, die sich selbsttätig federelastisch schließen und die durch einströmende Luft geöffnet werden und dabei einen ungehinderten Eintritt von Schleifstaub ermöglichen. Die sich ohne Luftströmung schließenden Ventilklappen des Sicherheitsventils verhindern den ungewollten Austritt gesammelten Schleifstaubs durch den Staubeintrittsstutzen in das Staubaustrittsrohr hinein bzw. bei entnommener Staubbox nach außen.In the dust inlet connection 35 of the dust box 36 is a not shown Safety valve arranged. This will formed by elastic flaps that are automatically resilient close and open the air flowing in become and an unhindered entry of Allow grinding dust. The ones that close without air flow Valve flaps of the safety valve prevent the unwanted discharge of collected grinding dust through the Dust inlet nozzle into the dust outlet tube or with the dust box removed to the outside.

    Claims (10)

    Handwerkzeugmaschine (10) mit einem zur Aufnahme einer Staubbox (36) dienenden Staubaustrittsstutzen (28), dadurch gekennzeichnet, daß die Staubbox (36), insbesondere an ihrem freien Ende, eine gesonderte, aus Motor (50) und Ventilator (52, 54) bestehende Staubabsaugeinheit (48) trägt.Hand tool (10) with a dust outlet connection (28) for receiving a dust box (36), characterized in that the dust box (36), in particular at its free end, has a separate motor (50) and fan (52, 54) existing dust extraction unit (48). Handwerkzeugmaschine (10) nach Anspruch 1, dadurch gekennzeichnet, daß die Staubabsaugeinheit (48) in die Staubbox (36) integriert ist und über Kontaktschienen mit einer Stromversorgung der Handwerkzeugmaschine (10) verbindbar ist.Hand tool (10) according to claim 1, characterized in that the dust extraction unit (48) is integrated in the dust box (36) and can be connected to a power supply of the hand tool (10) via contact rails. Handwerkzeugmaschine (10) nach Anspruch 2, dadurch gekennzeichnet, daß die Handwerkzeugmaschine (10) zur Stromversorgung der Staubabsaugeinheit (48) eine Batterie und/oder einen Transformator aufweist.Hand tool (10) according to claim 2, characterized in that the hand tool (10) for the power supply of the dust extraction unit (48) has a battery and / or a transformer. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein den Absaugstaub sammelnder Bereich der Staubbox (36) vom Motor (50) durch eine herausnehmbare Trennwand (44) abgeteilt ist, wobei die mit Löchern (450) versehene Trennwand (44) ein die Löcher (450) luftdurchlässig, staubrückhaltend schließendes Mikrofilter (46) trägt.Hand tool (10) according to one of the preceding claims, characterized in that a region of the dust box (36) collecting the dust is separated from the motor (50) by a removable partition (44), the partition (44) provided with holes (450) ) carries a holes (450) air-permeable, dust-retaining closing microfilter (46). Handwerkzeugmaschine (10)nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Staubbox (36) auf ihrer Oberseite einen luftdichten Deckel (38) trägt.Hand tool (10) according to one of the preceding claims, characterized in that the dust box (36) carries an airtight cover (38) on its upper side. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Staubbox (36) oben zwischen der hinteren Seitenwand (42) und der Trennwand (44) einen oben gelochten Motordeckel (45) trägt, der den Motorraum lösbar verschließt.Hand machine tool (10) according to one of the preceding claims, characterized in that the dust box (36) carries at the top between the rear side wall (42) and the partition (44) a motor cover (45) which is perforated at the top and which removably closes the motor compartment. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Motorraumdekkel (45) mit der rechtwinklig dazu angeordneten Trennwand (44) einstückig verbunden ist und nur gemeinsam mit der Trennwand (44) aus der Staubbox (36) lösbar ist.Hand tool (10) according to one of the preceding claims, characterized in that the engine compartment cover (45) is connected in one piece to the partition (44) arranged at right angles thereto and can only be removed from the dust box (36) together with the partition (44). Handwerkzeugmaschine (10) nach Anspruch 8, dadurch gekennzeichnet, daß zwischen dem Staubaustrittsstutzen (28) der Handwerkzeugmaschine (10) und dem Staubeintrittsstutzen (35) der Staubbox (36) elektrische Kontaktschienen (30) und Kontaktfahnen (34) miteinander kuppelbar sind, so daß dadurch die Stromversorgung des Motors (50) der Staubabsaugeinheit (48) gesichert ist.Hand tool (10) according to claim 8, characterized in that between the dust outlet nozzle (28) of the hand tool (10) and the dust inlet nozzle (35) of the dust box (36) electrical contact rails (30) and contact tabs (34) can be coupled to one another, so that thereby the power supply to the motor (50) of the dust extraction unit (48) is secured. Handwerkzeugmaschine (10) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zwischen dem den Motor (50) aufnehmenden Bereich der Staubbox (36) und der Handwerkzeugmaschine (10), insbesondere dem Handgriff (14) eine brückenartige, mechanische Verbindung besteht, die im Inneren Stromleitungen zur Stromversorgung des Motors (50) trägt und die zugleich das hintere Ende der Staubbox (36) gegen Relativbewegung gesichert an der Handwerkzeugmaschine (10) fixiert.Hand tool (10) according to one of claims 1 to 7, characterized in that there is a bridge-like mechanical connection between the area of the dust box (36) receiving the motor (50) and the hand tool (10), in particular the handle (14), which carries power lines inside for powering the motor (50) and which at the same time secures the rear end of the dust box (36) against relative movement on the hand-held power tool (10). Elektrische Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Motor (50) auf gegenüberliegenden Enden jeweils einen Ventilator (52, 54) drehfest trägt.Electric hand machine tool (10) according to one of the preceding claims, characterized in that the motor (50) carries a fan (52, 54) in a rotationally fixed manner on opposite ends.
    EP20020017021 2001-09-13 2002-07-27 Power tool with dust extraction Expired - Lifetime EP1293298B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10145039 2001-09-13
    DE2001145039 DE10145039A1 (en) 2001-09-13 2001-09-13 Hand tool with dust extraction

    Publications (3)

    Publication Number Publication Date
    EP1293298A2 true EP1293298A2 (en) 2003-03-19
    EP1293298A3 EP1293298A3 (en) 2003-08-06
    EP1293298B1 EP1293298B1 (en) 2005-09-14

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    ID=7698843

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP20020017021 Expired - Lifetime EP1293298B1 (en) 2001-09-13 2002-07-27 Power tool with dust extraction

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    EP (1) EP1293298B1 (en)
    DE (2) DE10145039A1 (en)
    ES (1) ES2247239T3 (en)

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1640115A1 (en) * 2004-09-22 2006-03-29 BLACK & DECKER INC. Dust collection system
    EP2174749A1 (en) * 2008-10-09 2010-04-14 HILTI Aktiengesellschaft Dust suction for a rechargeable electrical manual tool machine
    US9776296B2 (en) 2008-05-09 2017-10-03 Milwaukee Electric Tool Corporation Power tool dust collector
    EP3603864A1 (en) * 2018-08-03 2020-02-05 Hilti Aktiengesellschaft Mobile suction module for sabre jig saw

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US8967923B2 (en) 2012-01-13 2015-03-03 Aeg Electric Tools Gmbh Dust suction device for drilling machine
    USD741557S1 (en) 2014-01-15 2015-10-20 Milwaukee Electric Tool Corporation Dust collector
    USD742081S1 (en) 2014-01-15 2015-10-27 Milwaukee Electric Tool Corporation Dust collector

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3109007A1 (en) * 1981-03-10 1982-09-23 Ralf 4630 Bochum Biedron Dust-extraction device for angle grinding machine
    EP0279047A1 (en) * 1987-01-31 1988-08-24 Scintilla Ag Flexible dust bag coupling
    GB2343393A (en) * 1998-07-14 2000-05-10 Bosch Gmbh Robert Hand held machine tool dust extraction system

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3109007A1 (en) * 1981-03-10 1982-09-23 Ralf 4630 Bochum Biedron Dust-extraction device for angle grinding machine
    EP0279047A1 (en) * 1987-01-31 1988-08-24 Scintilla Ag Flexible dust bag coupling
    GB2343393A (en) * 1998-07-14 2000-05-10 Bosch Gmbh Robert Hand held machine tool dust extraction system

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1640115A1 (en) * 2004-09-22 2006-03-29 BLACK & DECKER INC. Dust collection system
    US9776296B2 (en) 2008-05-09 2017-10-03 Milwaukee Electric Tool Corporation Power tool dust collector
    EP2174749A1 (en) * 2008-10-09 2010-04-14 HILTI Aktiengesellschaft Dust suction for a rechargeable electrical manual tool machine
    EP3603864A1 (en) * 2018-08-03 2020-02-05 Hilti Aktiengesellschaft Mobile suction module for sabre jig saw
    WO2020025513A1 (en) * 2018-08-03 2020-02-06 Hilti Aktiengesellschaft Mobile suction module for jigsaw

    Also Published As

    Publication number Publication date
    EP1293298B1 (en) 2005-09-14
    ES2247239T3 (en) 2006-03-01
    EP1293298A3 (en) 2003-08-06
    DE50204240D1 (en) 2005-10-20
    DE10145039A1 (en) 2003-04-03

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