EP2148762B1 - Dust collection container - Google Patents

Dust collection container Download PDF

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Publication number
EP2148762B1
EP2148762B1 EP08716917.3A EP08716917A EP2148762B1 EP 2148762 B1 EP2148762 B1 EP 2148762B1 EP 08716917 A EP08716917 A EP 08716917A EP 2148762 B1 EP2148762 B1 EP 2148762B1
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EP
European Patent Office
Prior art keywords
connecting piece
collection container
dust collection
dust
seal
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.)
Not-in-force
Application number
EP08716917.3A
Other languages
German (de)
French (fr)
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EP2148762A1 (en
Inventor
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 EP2148762A1 publication Critical patent/EP2148762A1/en
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Publication of EP2148762B1 publication Critical patent/EP2148762B1/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
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—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 dust collecting container for a handheld power tool having a dust discharge nozzle, in particular for an electric hand grinder, according to the preamble of claim 1.
  • a known dust collecting container for an electric hand-held power tool ( DE 102 49 140 A1 ) has a dust collecting chamber and a below the bottom of the dust collecting chamber along, opening into the dust collection chamber inlet nozzle.
  • the open top dust collection chamber is closed with a removable air outlet openings, removable cover, the underside of which is covered with a dust filter.
  • the dust collector is pushed with its inlet nozzle on the Staubausblasstutzen the electric power tool and locked the dust collection container in the Aufschiebeend too by means of self-locking snap hook on the machine housing.
  • the dust-tight connection of the dust collection container to the electric hand-held power tool creates a seal between the Staubausblasstutzen and the inlet nozzle.
  • the seal consists of two O-rings, one of which rests in one of two axially spaced-apart in the Staubausblasstutzen incorporated circumferential grooves and presses against the inner wall of the inlet nozzle.
  • a known hand tool machine with dust extraction (EP 1 477 273 A1 ) has a Staubausblasstutzen and a dust collection container with an inlet port, which is designed to slide on the Staubausblasstutzen.
  • a sleeve-like seal On the Staubausblasstutzen a sleeve-like seal is pushed and fixed on it.
  • the cuff-like seal seals with its pinnacle-like peripheral surface against the inner wall of the inlet nozzle and has an on a cuff opening enclosing radially projecting collar on an additional sealing surface which extends transversely to the nozzle axis.
  • the sealing surface When pushed onto the Staubausblasstutzen inlet nozzle, the sealing surface applies to the free end of the inlet nozzle, and the collar is supported with its remote from the sealing surface back on a Radialflansch, which is integrally formed on the Staubausblststutzen at the axial distance from the free end face.
  • the seal In order to prevent sliding of the sleeve-like seal from Staubauslassstutzen when removing the dust collection container of the power tool, the seal has at its collar remote end on a radially inwardly projecting recirculating nose, which engages in a trained in Staubauslassstutzen annular groove.
  • a known dust box for a hand tool with integrated dust extraction ( DE 199 24 547 A1 ) has a Einblasstutzen releasably attached to a Staubausblasstutzen the hand tool.
  • the Einblasstutzen has inside a circumferential, elastic sealing lip, which is effective between injection and Ausblasstutzen and the end of the Ausblastutzens the power tool tightly encloses.
  • the dust collector according to the invention with the features of claim 1 has the advantage that the sealing surface of the seal, which applies to the Staubausblasstutzen the hand tool and acts with sealing force on this, transverse to the axis of the inlet nozzle and thus aligned transversely to the sliding direction of the dust collection container.
  • the seal when pushing or pulling the inlet nozzle on or from the Staubausblasstutzen produce no frictional force, so that a jerk-free application and removal of the dust collection container is guaranteed to or from the power tool.
  • the inlet nozzle can always do that be slid straight on the Staubausblasstutzen or deducted and must not be alternately on the Staubausblasstutzen back and forth to overcome a friction force when pushing or pulling.
  • the dust collection container for pushing and unplugging requires no play, so that no compromises have to be made to the compact design of dust collector and hand tool.
  • the compression spring which is increasingly stretched when sliding the inlet nozzle on the Staubausblasstutzen creates a high axial sealing force, which presses the seal axially on the annular free end of the Staubausblstutzens, which at the same time presses the peripheral surface of the seal to the inner wall of the inlet nozzle stronger.
  • the compressive force of the compressed compression spring supports the removal of the inlet nozzle from the exhaust nozzle, so that no jerky tearing of the dust collection container can arise from the power tool.
  • the in Fig. 1 in side view and in Fig. 2 in longitudinal section to be seen dust collection container for a hand tool with cutting tool eg for a electric hand grinder, such as orbital sander, or belt sander, but also for a hand saw or electric planer is to attach to and removal from the machine housing 11 of the power tool in the area of am Machine housing 11 designed Staubausblastutzens 12 of the power tool designed.
  • the dust collecting container comprises a trough-like housing 13 open at the top and a cover 14 which can be placed on the opening of the housing 13 and closes off the housing 13 in a dustproof manner and encloses a dust collecting chamber 15 together with the housing 13.
  • In the lid 14 are in Fig. 1 and 2 recessed unseen exhaust vents.
  • the lid 14 has a circumferential elastic edge 141 on the end face of a groove is incorporated. With this end groove, the edge 141 of the lid 14 is pressed onto the housing opening enclosing the end edge of the housing 13.
  • the dust collecting chamber 15 facing bottom of the lid 14 is covered with a dust filter 16, which is designed in the embodiment as a folded filter.
  • a dust filter 16 which is designed in the embodiment as a folded filter.
  • an opening into the dust collection chamber 15 inlet nozzle 17 is integrated with the dust collection container is pushed onto the Staubausblasstutzen 12 of the power tool.
  • annular seal 18 is held in the inlet port 17 which rests with its peripheral surface 182 on the inner wall 172 of the inlet nozzle 17 and by a compression spring 19 with its transversely to the axis of the inlet port 17 aligned sealing surface 181 on the annular free end of Staubausblasstutzens 12 is pressed.
  • the compression spring 19 which in turn is supported on a circumferential radial shoulder 171 in the inlet nozzle 17, the seal 18 is pressed with its peripheral surface 182 even more against the inner wall 172 of the inlet nozzle 17.
  • latching 20 In its operational connection with the power tool of the dust collection container by means of an in Fig. 1 indicated latching 20 fixed to the machine housing 11, wherein in each case a latch 20 on mutually remote side surfaces of the machine housing 11 and housing 13 is present.
  • Each latching 20 consists of a latching hook 21 arranged on the housing 13 of the dust collecting container and of a latching nose 22 arranged on the machine housing 11 with an undercut 221.
  • the dust collecting container is pushed with its inlet nozzle 17 on the Staubausblasstutzen 12. After a short Aufschiebeweg the seal sets 18 with its sealing surface 181 on the front end of the Staubausblastutzens 12 and is pressed at a further displacement of the compressing compression spring 19 on the front end 121. With increasing pressure force of the compression spring 19, the peripheral surface 182 of the seal 18 presses more strongly against the inner wall 172 of the inlet nozzle 17. At the end of the sliding movement of the latching hook 21 passes over the latching lug 22 and engages in the undercut 221 a.
  • latching hooks 21 can also be designed as resilient latching pawls which automatically spring into the undercut 221 under spring force. Also, the arrangement of latching hook 21 and locking lugs 22 on the housing 13 of the dust collecting container and the machine housing 11 may be reversed.
  • a simplified embodiment can be dispensed with the compression spring 19 and the annular seal 18 with its facing away from the sealing surface 181 back to a formed in the inlet nozzle 17 abutment, for example, a radial web, applied.
  • the seal 18 is formed by the latching lugs 22 engaging behind the latch hook 21 on the front end 121 of the Staubausblastutzens 12th pressed.
  • the seal is axially elastically compressible by suitable choice of material, eg polyurethane foam, or by a corresponding geometric shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Portable Power Tools In General (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Staubauffangbehälter für eine einen Staubausblasstutzen aufweisende Handwerkzeugmaschine, insbesondere für einen Elektrohandschleifer, nach dem Oberbegriff des Anspruchs 1.The invention is based on a dust collecting container for a handheld power tool having a dust discharge nozzle, in particular for an electric hand grinder, according to the preamble of claim 1.

Ein bekannter Staubauffangbehälter für eine Elektrohandwerkzeugmaschine ( DE 102 49 140 A1 ) weist eine Staubsammelkammer und einen unter dem Boden der Staubsammelkammer entlanggeführten, in der Staubsammelkammer mündenden Einlassstutzen auf. Die oben offene Staubsammelkammer ist mit einem Luftaustrittsöffnungen aufweisenden, abnehmbaren Deckel verschlossen, dessen Unterseite mit einem Staubfilter belegt ist. Zur Nutzung des Staubauffangbehälters an der Elektrohandwerkzeugmaschine wird der Staubauffangbehälter mit seinem Einlassstutzen auf den Staubausblasstutzen der Elektrohandwerkzeugmaschine aufgeschoben und der Staubauffangbehälter in der Aufschiebeendstellung mittels selbsttätig einfedernden Rasthaken am Maschinengehäuse verriegelt. Den staubdichten Anschluss des Staubauffangbehälters an der Elektrohandwerkzeugmaschine stellt eine Dichtung zwischen dem Staubausblasstutzen und dem Einlassstutzen her. Die Dichtung besteht aus zwei O-Ringen, von denen jeweils einer in einer von zwei axial beabstandet in den Staubausblasstutzen eingearbeiteten Umfangsnuten einliegt und sich gegen die Innenwand des Einlassstutzens anpresst.A known dust collecting container for an electric hand-held power tool ( DE 102 49 140 A1 ) has a dust collecting chamber and a below the bottom of the dust collecting chamber along, opening into the dust collection chamber inlet nozzle. The open top dust collection chamber is closed with a removable air outlet openings, removable cover, the underside of which is covered with a dust filter. To use the dust collection container on the electric hand tool, the dust collector is pushed with its inlet nozzle on the Staubausblasstutzen the electric power tool and locked the dust collection container in the Aufschiebeendstellung by means of self-locking snap hook on the machine housing. The dust-tight connection of the dust collection container to the electric hand-held power tool creates a seal between the Staubausblasstutzen and the inlet nozzle. The seal consists of two O-rings, one of which rests in one of two axially spaced-apart in the Staubausblasstutzen incorporated circumferential grooves and presses against the inner wall of the inlet nozzle.

Eine bekannte Handwerkzeugmaschine mit Staubabsaugung ( EP 1 477 273 A1 ) weist einen Staubausblasstutzen und einen Staubauffangbehälter mit einem Einlassstutzen auf, der zum Aufschieben auf den Staubausblasstutzen ausgebildet ist. Auf den Staubausblasstutzen ist eine manschettenartige Dichtung aufgeschoben und darauf festgelegt. Die manschettenartige Dichtung dichtet mit ihrer tannenzapfenartig ausgebildeten Umfangsfläche gegen die Innenwand des Einlassstutzens und weist eine an einem die Manschettenöffnung umschließenden radial abstehenden Bund eine zusätzliche Dichtungsfläche auf, die sich quer zur Stutzenachse erstreckt. Bei auf den Staubausblasstutzen aufgeschobenem Einlassstutzen legt sich die Dichtungsfläche an das freie Ende des Einlassstutzens an, und der Bund stützt sich mit seiner von der Dichtungsfläche abgekehrten Rückseite an einem Radialflansch ab, der an dem Staubauslassstutzen im Axialabstand von dessen freiem Stirnende angeformt ist. Um beim Abziehen des Staubauffangbehälters von der Handwerkzeugmaschine ein Abgleiten der manschettenartigen Dichtung vom Staubauslassstutzen zu verhindern, weist die Dichtung an ihrem bundfernen Ende eine radial nach innen vorspringende Umlaufnase auf, die in eine im Staubauslassstutzen ausgebildete Ringnut eingreift.A known hand tool machine with dust extraction ( EP 1 477 273 A1 ) has a Staubausblasstutzen and a dust collection container with an inlet port, which is designed to slide on the Staubausblasstutzen. On the Staubausblasstutzen a sleeve-like seal is pushed and fixed on it. The cuff-like seal seals with its pinnacle-like peripheral surface against the inner wall of the inlet nozzle and has an on a cuff opening enclosing radially projecting collar on an additional sealing surface which extends transversely to the nozzle axis. When pushed onto the Staubausblasstutzen inlet nozzle, the sealing surface applies to the free end of the inlet nozzle, and the collar is supported with its remote from the sealing surface back on a Radialflansch, which is integrally formed on the Staubausblststutzen at the axial distance from the free end face. In order to prevent sliding of the sleeve-like seal from Staubauslassstutzen when removing the dust collection container of the power tool, the seal has at its collar remote end on a radially inwardly projecting recirculating nose, which engages in a trained in Staubauslassstutzen annular groove.

Eine bekannte Staubbox für eine Handwerkzeugmaschine mit integrierter Staubausaugung ( DE 199 24 547 A1 ) weist einen an einem Staubausblasstutzen der Handwerkzeugmaschine lösbar befestigten Einblasstutzen auf. Der Einblasstutzen besitzt im Innern eine umlaufende, elastische Dichtlippe, die zwischen Einblas- und Ausblasstutzen wirksam ist und das Ende des Ausblasstutzens der Handwerkzeugmaschine dicht umschließt.A known dust box for a hand tool with integrated dust extraction ( DE 199 24 547 A1 ) has a Einblasstutzen releasably attached to a Staubausblasstutzen the hand tool. The Einblasstutzen has inside a circumferential, elastic sealing lip, which is effective between injection and Ausblasstutzen and the end of the Ausblastutzens the power tool tightly encloses.

Offenbarung der ErfindungDisclosure of the invention

Der erfindungsgemäße Staubauffangbehälter mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Dichtfläche der Dichtung, die sich an den Staubausblasstutzen der Handwerkzeugmaschine anlegt und mit Dichtkraft auf diesen wirkt, quer zur Achse des Einlassstutzens und damit quer zur Aufschieberichtung des Staubauffangbehälters ausgerichtet ist. Damit kann die Dichtung beim Aufschieben oder Abziehen des Einlassstutzens auf den bzw. von dem Staubausblasstutzen keine Reibkraft erzeugen, so dass ein ruckfreies Ansetzen und Abnehmen des Staubauffangbehälters an die bzw. von der Handwerkzeugmaschine gewährleistet ist. Der Einlassstutzen kann damit immer geradlinig auf den Staubausblasstutzen aufgeschoben bzw. abgezogen werden und muss nicht zur Überwindung einer Reibkraft beim Aufschieben oder Abziehen alternierend auf dem Staubausblasstutzen hin- und hergedreht werden. Somit benötigt der Staubauffangbehälter für das Aufschieben und Abziehen kein Bewegungsspiel, so dass keine Kompromisse an die kompakte Bauweise von Staubauffangbehälter und Handwerkzeugmaschine eingegangen werden müssen. Die Druckfeder, die beim Aufschieben des Einlassstutzens auf den Staubausblasstutzen zunehmend gespannt wird, erzeugt eine hohe axiale Dichtkraft, die die Dichtung axial auf das ringförmige freie Stirnende des Staubausblasstutzens aufpresst, wodurch sich zugleich die Umfangsfläche der Dichtung an die Innenwand des Einlassstutzens stärker andrückt. Darüber hinaus unterstützt die Druckkraft der komprimierten Druckfeder das Abziehen des Einlassstutzens vom Ausblasstutzen, so dass kein ruckartiges Losreißen des Staubauffangbehälters von der Handwerkzeugmaschine entstehen kann.The dust collector according to the invention with the features of claim 1 has the advantage that the sealing surface of the seal, which applies to the Staubausblasstutzen the hand tool and acts with sealing force on this, transverse to the axis of the inlet nozzle and thus aligned transversely to the sliding direction of the dust collection container. Thus, the seal when pushing or pulling the inlet nozzle on or from the Staubausblasstutzen produce no frictional force, so that a jerk-free application and removal of the dust collection container is guaranteed to or from the power tool. The inlet nozzle can always do that be slid straight on the Staubausblasstutzen or deducted and must not be alternately on the Staubausblasstutzen back and forth to overcome a friction force when pushing or pulling. Thus, the dust collection container for pushing and unplugging requires no play, so that no compromises have to be made to the compact design of dust collector and hand tool. The compression spring, which is increasingly stretched when sliding the inlet nozzle on the Staubausblasstutzen creates a high axial sealing force, which presses the seal axially on the annular free end of the Staubausblstutzens, which at the same time presses the peripheral surface of the seal to the inner wall of the inlet nozzle stronger. In addition, the compressive force of the compressed compression spring supports the removal of the inlet nozzle from the exhaust nozzle, so that no jerky tearing of the dust collection container can arise from the power tool.

Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Staubauffangbehälters möglich.The measures listed in the further claims advantageous refinements and improvements of the claim 1 dust collection container are possible.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

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

Fig. 1
eine Seitenansicht eines an eine Handwerkzeugmaschine angesetzten Staubauffangbehälters, wobei von der Handwerkzeugmaschine lediglich das Maschinengehäuse ausschnittweise dargestellt ist,
Fig. 2
einen Längsschnitt des an die Handwerkzeugmaschine angesetzten Staubauffangbehälters in Fig. 1.
The invention is explained in more detail in the following description with reference to an embodiment shown in the drawings. Show it:
Fig. 1
3 a side view of a dust collecting container attached to a handheld power tool, wherein only the machine housing is shown in fragmentary form by the handheld power tool,
Fig. 2
a longitudinal section of the attached to the power tool dust collector in Fig. 1 ,

Der in Fig. 1 in Seitenansicht und in Fig. 2 im Längsschnitt zu sehende Staubauffangbehälter für eine Handwerkzeugmaschine mit spanendem Werkzeug, z.B. für einen Elektrohandschleifer, wie Schwingschleifer, Exzenterschleifer oder Bandschleifer, aber auch für eine Handsägemaschine oder einen Elektrohobel, ist zum Ansetzen an das und Abnehmen von dem Maschinengehäuse 11 der Handwerkzeugmaschine im Bereich eines am Maschinengehäuse 11 ausgebildeten Staubausblasstutzens 12 der Handwerkzeugmaschine konzipiert. Der Staubauffangbehälter umfasst ein oben offenes, wannenartiges Gehäuse 13 und einen auf die Öffnung des Gehäuses 13 aufsetzbaren Deckel 14, der das Gehäuse 13 staubdicht abschließt und zusammen mit dem Gehäuse 13 eine Staubsammelkammer 15 einschließt. Im Deckel 14 sind in Fig. 1 und 2 nicht zu sehende Abluftöffnungen ausgespart. Zur Staubabdichtung besitzt der Deckel 14 einen umlaufenden elastischen Rand 141 an dessen Stirnfläche eine Nut eingearbeitet ist. Mit dieser Stirnnut ist der Rand 141 des Deckels 14 auf die die Gehäuseöffnung umschließende Stirnkante des Gehäuses 13 aufgedrückt. Die der Staubsammelkammer 15 zugekehrte Unterseite des Deckels 14 ist mit einem Staubfilter 16 belegt, das im Ausführungsbeispiel als Faltenfilter ausgeführt ist. Im Boden des Gehäuses 13 ist ein in der Staubsammelkammer 15 mündender Einlassstutzen 17 integriert, mit dem der Staubauffangbehälter auf den Staubausblasstutzen 12 der Handwerkzeugmaschine aufgeschoben ist. Zur Staubabdichtung an der Schnittstelle von Staubauffangbehälter und Handwerkzeugmaschine ist im Einlassstutzen 17 eine ringförmige Dichtung 18 vorgehalten, die mit ihrer Umfangsfläche 182 an der Innenwand 172 des Einlassstutzens 17 anliegt und von einer Druckfeder 19 mit ihrer quer zur Achse des Einlassstutzen 17 ausgerichteten Dichtfläche 181 auf das ringförmige freie Ende des Staubausblasstutzens 12 aufgepresst wird. Durch die Presskraft der Druckfeder 19, die sich ihrerseits an einer umlaufenden Radialschulter 171 im Einlassstutzen 17 abstützt, wird die Dichtung 18 mit ihrer Umfangsfläche 182 noch stärker gegen die Innenwand 172 des Einlassstutzens 17 angedrückt. Aufgrund dieser Ausbildung der Staubabdichtung sind beim Aufschieben des Einlassstutzens 17 auf den Staubausblasstutzen 12 sowie beim Abziehen des Einlassstutzens 17 vom Staubausblasstutzen 12 keine bzw. keine nennenswerte durch die Dichtung 18 hervorgerufenen Reibkräfte zwischen den beiden Stutzen 12, 17 zu überwinden, und ein ruckfreies Handhaben des Staubauffangbehälters beim Ansetz- und Absetzvorgang ist gewährleistet. Die Druckfeder 19 ist stark genug, dass die Dichtung 18 im Einlassstutzen 17 verschoben werden kann, so dass sie sich stets zuverlässig auf die Stirnfläche des Einlassstutzens 17 aufsetzt.The in Fig. 1 in side view and in Fig. 2 in longitudinal section to be seen dust collection container for a hand tool with cutting tool, eg for a electric hand grinder, such as orbital sander, or belt sander, but also for a hand saw or electric planer is to attach to and removal from the machine housing 11 of the power tool in the area of am Machine housing 11 designed Staubausblastutzens 12 of the power tool designed. The dust collecting container comprises a trough-like housing 13 open at the top and a cover 14 which can be placed on the opening of the housing 13 and closes off the housing 13 in a dustproof manner and encloses a dust collecting chamber 15 together with the housing 13. In the lid 14 are in Fig. 1 and 2 recessed unseen exhaust vents. For dust sealing the lid 14 has a circumferential elastic edge 141 on the end face of a groove is incorporated. With this end groove, the edge 141 of the lid 14 is pressed onto the housing opening enclosing the end edge of the housing 13. The dust collecting chamber 15 facing bottom of the lid 14 is covered with a dust filter 16, which is designed in the embodiment as a folded filter. In the bottom of the housing 13 an opening into the dust collection chamber 15 inlet nozzle 17 is integrated with the dust collection container is pushed onto the Staubausblasstutzen 12 of the power tool. For dust sealing at the interface of dust collection container and hand tool 17 an annular seal 18 is held in the inlet port 17 which rests with its peripheral surface 182 on the inner wall 172 of the inlet nozzle 17 and by a compression spring 19 with its transversely to the axis of the inlet port 17 aligned sealing surface 181 on the annular free end of Staubausblasstutzens 12 is pressed. By the pressing force of the compression spring 19, which in turn is supported on a circumferential radial shoulder 171 in the inlet nozzle 17, the seal 18 is pressed with its peripheral surface 182 even more against the inner wall 172 of the inlet nozzle 17. Due to this design of the dust seal are when pushing the inlet nozzle 17 on the Staubausblasstutzen 12 and when removing the inlet nozzle 17 from Staubausblasstutzen 12 no or no significant caused by the seal 18 frictional forces between the two nozzles 12, 17 to overcome, and a jerk-free handling of the Dust collecting container is ensured during the setting and settling process. The compression spring 19 is strong enough that the seal 18 can be moved in the inlet port 17, so that it always sits reliably on the end face of the inlet nozzle 17.

In seiner betriebsbereiten Verbindung mit der Handwerkzeugmaschine ist der Staubauffangbehälter mittels einer in Fig. 1 angedeuteten Verrastung 20 am Maschinengehäuse 11 festgelegt, wobei jeweils eine Verrastung 20 auf voneinander abgekehrten Seitenflächen von Maschinengehäuse 11 und Gehäuse 13 vorhanden ist. Jede Verrastung 20 besteht aus einem am Gehäuse 13 des Staubauffangbehälters angeordneten Rasthaken 21 und aus einer am Maschinengehäuse 11 angeordneten Rastnase 22 mit Hinterschnitt 221.In its operational connection with the power tool of the dust collection container by means of an in Fig. 1 indicated latching 20 fixed to the machine housing 11, wherein in each case a latch 20 on mutually remote side surfaces of the machine housing 11 and housing 13 is present. Each latching 20 consists of a latching hook 21 arranged on the housing 13 of the dust collecting container and of a latching nose 22 arranged on the machine housing 11 with an undercut 221.

Zum Ansetzen des Staubauffangbehälters an die Handwerkzeugmaschine wird der Staubauffangbehälter mit seinem Einlassstutzen 17 auf den Staubausblasstutzen 12 aufgeschoben. Nach kurzem Aufschiebeweg legt sich die Dichtung 18 mit ihrer Dichtfläche 181 auf das Stirnende des Staubausblasstutzens 12 auf und wird bei weiterem Verschiebeweg von der sich zusammendrückenden Druckfeder 19 auf das Stirnende 121 aufgepresst. Mit zunehmender Druckkraft der Druckfeder 19 drückt sich auch die Umfangsfläche 182 der Dichtung 18 stärker an die Innenwand 172 des Einlassstutzens 17 an. Am Ende der Aufschiebebewegung läuft der Rasthaken 21 über die Rastnase 22 und rastet in den Hinterschnitt 221 ein.To attach the dust collecting container to the hand tool, the dust collecting container is pushed with its inlet nozzle 17 on the Staubausblasstutzen 12. After a short Aufschiebeweg the seal sets 18 with its sealing surface 181 on the front end of the Staubausblastutzens 12 and is pressed at a further displacement of the compressing compression spring 19 on the front end 121. With increasing pressure force of the compression spring 19, the peripheral surface 182 of the seal 18 presses more strongly against the inner wall 172 of the inlet nozzle 17. At the end of the sliding movement of the latching hook 21 passes over the latching lug 22 and engages in the undercut 221 a.

Zum Abnehmen des Staubauffangbehälters von der Handwerkzeugmaschine wird der Staubauffangbehälter etwas in Einschieberichtung, also hin zum Maschinengehäuse 11, von Hand verschoben, was durch die sich weiter zusammendrückende Druckfeder 19 möglich ist. Dadurch löst sich der Rasthaken 21 vom Hinterschnitt 221 und durch leichte Verdrehung des Staubauffangbehälters kann der Rasthaken 21 aus dem Hinterschnitt 221 bewegt werden. Nun schiebt die sich entspannende Druckfeder 19 den Staubauffangbehälter ein Stück auf dem Staubausblasstutzen 12 zurück und der Staubauffangbehälter kann mühelos abgezogen werden.To remove the dust collection container from the power tool of the dust collection container is slightly shifted in the insertion direction, ie towards the machine housing 11 by hand, which is possible by the further compressive compression spring 19. As a result, the latching hook 21 releases from the undercut 221 and by slight rotation of the dust collecting container, the latching hooks 21 can be moved out of the undercut 221. Now, the relaxing compression spring 19 pushes the dust collector a piece on the Staubausblasstutzen 12 and the dust collector can be easily removed.

Alternativ können die Rasthaken 21 auch als federnde Rastklinken ausgeführt werden, die unter Federkraft selbsttätig in den Hinterschnitt 221 einfallen. Auch kann die Anordnung von Rasthaken 21 und Rastnasen 22 am Gehäuse 13 des Staubauffangbehälters und am Maschinengehäuse 11 vertauscht sein.Alternatively, the latching hooks 21 can also be designed as resilient latching pawls which automatically spring into the undercut 221 under spring force. Also, the arrangement of latching hook 21 and locking lugs 22 on the housing 13 of the dust collecting container and the machine housing 11 may be reversed.

In einer vereinfachten Ausbildung kann auf die Druckfeder 19 verzichtet werden und die ringförmige Dichtung 18 mit ihrer von der Dichtfläche 181 abgekehrten Rückseite an ein im Einlassstutzen 17 ausgebildetes Widerlager, z.B. einen Radialsteg, angelegt werden. Bei entsprechender Anordnung des Widerlagers wird dann die Dichtung 18 durch die hinter die Rastnasen 22 einfallenden Rasthaken 21 auf das Stirnende 121 des Staubausblasstutzens 12 aufgepresst. Die Dichtung ist durch geeignete Materialwahl, z.B. PUR-Schaum, oder durch eine entsprechende geometrische Formgebung axial elastisch kompressibel.In a simplified embodiment can be dispensed with the compression spring 19 and the annular seal 18 with its facing away from the sealing surface 181 back to a formed in the inlet nozzle 17 abutment, for example, a radial web, applied. With a corresponding arrangement of the abutment then the seal 18 is formed by the latching lugs 22 engaging behind the latch hook 21 on the front end 121 of the Staubausblastutzens 12th pressed. The seal is axially elastically compressible by suitable choice of material, eg polyurethane foam, or by a corresponding geometric shape.

Claims (3)

  1. Dust collection container for a portable power tool that has a dust blow-out connecting piece (12), in particular for a portable electric sander, having an inlet connecting piece (17) which is configured to be pushed onto the dust blow-out connecting piece (12), and having a seal (18) which is effective between the inlet connecting piece (17) and the dust blow-out connecting piece (12), provides sealing with its circumferential surface (182) against the inner wall (172) of the inlet connecting piece (17), has a sealing surface (181) oriented transversely to the connecting piece axis and is supported on its rear side, facing away from the sealing surface (181), against an abutment, characterized in that the sealing surface (181) is configured to provide sealing against the free end side (121) of the dust blow-out connecting piece (12), and the abutment is a compression spring (19) which is supported on one side on the rear side of the seal (18) and on the other side on a radial shoulder (171) formed in the inlet connecting piece (17), and the pressure force of which is greater than a friction force that occurs between the circumferential surface (182) of the seal (18) and the inner wall (172) of the inlet connecting piece (17).
  2. Dust collection container according to Claim 1, characterized by at least one latching hook (21) which produces a latched connection (20) between the dust collection container and the portable power tool by way of a machine-side latching lug (22) in the pushed-on end position of the inlet connecting piece (17), and in that the latched connection (20) is configured such that the latching hook (21) drops automatically into place behind the latching lug (22) when the pushed-on end position of the inlet connecting piece (17) is reached and the latched connection (20) is releasable by pushing the dust collection container axially forwards in the insertion direction counter to the spring force of the compression spring (19).
  3. Dust collection container according to Claim 2, characterized in that the machine-side latching lug (22) has an undercut (221) behind which the latching hook (21) can engage.
EP08716917.3A 2007-04-18 2008-02-19 Dust collection container Not-in-force EP2148762B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018234A DE102007018234A1 (en) 2007-04-18 2007-04-18 Dust collector
PCT/EP2008/051957 WO2008128798A1 (en) 2007-04-18 2008-02-19 Dust collection container

Publications (2)

Publication Number Publication Date
EP2148762A1 EP2148762A1 (en) 2010-02-03
EP2148762B1 true EP2148762B1 (en) 2013-04-10

Family

ID=39324809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08716917.3A Not-in-force EP2148762B1 (en) 2007-04-18 2008-02-19 Dust collection container

Country Status (5)

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US (1) US7976364B2 (en)
EP (1) EP2148762B1 (en)
CN (1) CN101657298B (en)
DE (1) DE102007018234A1 (en)
WO (1) WO2008128798A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9776296B2 (en) 2008-05-09 2017-10-03 Milwaukee Electric Tool Corporation Power tool dust collector
US8967923B2 (en) 2012-01-13 2015-03-03 Aeg Electric Tools Gmbh Dust suction device for drilling machine
US9393658B2 (en) 2012-06-14 2016-07-19 Black & Decker Inc. Portable power tool
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4839995A (en) * 1988-05-02 1989-06-20 Hutchins Manufacturing Company Abrading tool
US5440809A (en) * 1993-10-06 1995-08-15 Padilla; Daniel G. Dust collector for hand-held power tool
DE19924547A1 (en) 1999-05-28 2000-11-30 Bosch Gmbh Robert Hand tool with integrated dust suction; has integrated dust suction connected to flat dust box with air exit holes in releasable covers on side walls, where air exit holes have dust-proof filters
DE10116501A1 (en) * 2001-04-03 2002-10-17 Bosch Gmbh Robert Spigot for connecting a suction hose to a hand machine tool
DE10249140A1 (en) 2002-10-22 2004-05-06 Robert Bosch Gmbh Dust collector for an electric hand machine tool
ITMI20030961A1 (en) 2003-05-14 2004-11-15 Guido Valentini MOTORIZED TOOL WITH SUCTION CAPACITY AND DUST COLLECTION.

Also Published As

Publication number Publication date
CN101657298B (en) 2013-05-29
DE102007018234A1 (en) 2008-10-23
CN101657298A (en) 2010-02-24
US7976364B2 (en) 2011-07-12
WO2008128798A1 (en) 2008-10-30
EP2148762A1 (en) 2010-02-03
US20090270018A1 (en) 2009-10-29

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