EP0232761B1 - Tool for the treatment of surfaces or the like - Google Patents

Tool for the treatment of surfaces or the like Download PDF

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Publication number
EP0232761B1
EP0232761B1 EP19870100838 EP87100838A EP0232761B1 EP 0232761 B1 EP0232761 B1 EP 0232761B1 EP 19870100838 EP19870100838 EP 19870100838 EP 87100838 A EP87100838 A EP 87100838A EP 0232761 B1 EP0232761 B1 EP 0232761B1
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EP
European Patent Office
Prior art keywords
dust
oscillating weight
blower wheel
tool
motor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP19870100838
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German (de)
French (fr)
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EP0232761A2 (en
EP0232761A3 (en
Inventor
Franz Lex
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Individual
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Individual
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Publication of EP0232761A3 publication Critical patent/EP0232761A3/en
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    • 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
    • B24B55/105—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with oscillating 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents

Definitions

  • the invention relates to a device for treating, in particular for cleaning, polishing and sanding surfaces, as stated in the preamble of claim 1.
  • a known device of this type EP-A-0 111 720
  • the eccentric swing weight is attached directly to the motor shaft.
  • this disadvantageously leads to an excessive load on the motor bearings and thus to a reduced service life of the motor.
  • a dust-extracting fan rotor can be driven by the motor shaft in addition to the eccentric flywheel for a dust catcher arranged on the device housing, in addition, both the eccentric flywheel weight or the tool and the dust-extracting fan rotor are always driven at the same drive speed .
  • the object of the invention is to eliminate the disadvantages mentioned. This object is achieved by the features stated in the characterizing part of claim 1.
  • a symmetrical arrangement of the vibrating mass in particular by dividing the eccentric swing weight on at least two countershaft gears of a reduction gear, which are arranged symmetrically to the motor shaft and are movable in the same direction, achieves a uniform swinging out of the tool and thus also a transmission of the vibrations to the Device housing avoided.
  • such a device can also be designed so that it can be used for dust extraction both alternatively and simultaneously, whereby in both cases different drive speeds for the tool and the dust-extracting fan rotor are possible.
  • the advantages that can be achieved by the invention are therefore essentially to be seen in a longer service life and in further possible uses of the drive system mentioned at the beginning.
  • FIG. 1 shows in cross section an inventive device for treatment, for. B. for cleaning surfaces or the like.
  • FIG. 2 in cross section the device according to FIG. 1 with an additional dust extraction device, for cleaning or the like with simultaneous dust extraction
  • FIG. 3 in cross section a variant of the device according to FIG. 1 for cleaning or.
  • FIG. 4 shows in cross section a dust collection device for FIG. 3 that can be used for the purpose of dust extraction.
  • the device shown in FIGS. 1, 2 and 3 essentially consists of the housing 2 and a drive unit 3 for the tool 1, which is mounted on the housing 2 such that it can vibrate, and is motor-unbalanced.
  • the housing 2 is perpendicular to the cutting plane in three parts 10, 11, 12 divided, which parts are connected by the screws 9 - represented by lines of symmetry.
  • the drive unit 3 consists of the electric motor 5, the shaft 13, which projects from the motor housing, drives the eccentric flywheel 4 and a tool holder 8 fastened to the side of the flywheel 4 on the motor housing 5 by the bracket 7 and the screws 6 Cup-shaped tool carrier 8, the tool 1 designed as a cleaning brush can be used by means of the snap coupling 22.
  • the drive unit 3 is swingably held on the housing 2 by three oscillating elements 15 arranged symmetrically between the housing end 12 and the tool carrier 8 and a self-aligning bearing 14 arranged on the housing part 10 in the axial direction of the motor 1 and will thereby execute a circular oscillating movement which transmits the tool 1 becomes.
  • oscillating elements 15 arranged symmetrically between the housing end 12 and the tool carrier 8 and a self-aligning bearing 14 arranged on the housing part 10 in the axial direction of the motor 1 and will thereby execute a circular oscillating movement which transmits the tool 1 becomes.
  • electrical devices on the housing 2 such as the on / off switch 17 and the charging socket 18 for a plurality of rechargeable battery batteries 16 arranged in the device.
  • FIGS. 2 and 3 show, if necessary, the drive unit 3, etc.
  • a dust-extracting fan rotor 31 can also be additionally arranged for a dust-collecting device 40 that can be used on the device.
  • the eccentric swing weight 4 of the drive unit 3 is on the tool holder 8, etc. is rotatably mounted on the axles 35 and 24 and can be driven by the motor shaft 13 via the clutch 29 or the reduction gear 21. ( Figure 3 or 1 and, 2).
  • the flywheel weight 4 is distributed to two identical countershafts 20, 20 'of the reduction gear 21. These are in one plane and symmetrical to one another on the tool carrier 8, etc. on the axles 24 together with the flywheel parts 4 rotatably and are driven by the pinion 19 attached to the motor shaft 13.
  • FIG. 2 additionally shows the device according to FIG. 1 with the dust extraction device 31, '40, with the aid of which dust extraction can also be carried out at the same time.
  • the annular extension 23 for the fan rotor 31 is provided on the tool carrier 8.
  • the blower rotor 31 located below the reduction gear 21 is connected by means of the screw 42 to the toothed pinion 19 fastened to the motor shaft 13.
  • the tool 1, which is designed as a cleaning brush, can be used on the annular extension 23 by means of the snap coupling 22.
  • the cleaning brush 1 has at least one through-opening 41 leading to the suction opening 32 of the blower rotor 31, which through a radial opening on the tool carrier 8, etc. outlet opening 44 arranged on the ring-shaped extension 23 and the flexible connection 45 is connected to the dust collecting device 40 arranged on the housing 2 so that it can flow through.
  • the flywheel weight 4 can be driven via the clutch 29 in FIG.
  • the coupling 29 is designed to be releasable in accordance with a further development of the invention, the releasable coupling part 29 'with the eccentric swing weight 4 being rotatably mounted on the axis 35 of a base plate 28 which can be removed on the tool carrier 8.
  • Tool carrier 8 and base plate 28 are formed with the threaded or bayonet lock 27 for this purpose. You can not only easily attach swing weights 4 of different sizes to change the effect of the device, but also make it much easier to convert the device to vacuuming.
  • a dust-extracting fan rotor 31 is additionally arranged on the motor shaft 13 in a manner known per se, the hub 30 of which, in a further development according to the invention, is also designed as the further part of the releasable clutch 29.
  • a cover 33 which closes the suction opening 32 of the blower rotor 31 and, according to another further development of the invention, is rotatably mounted together with the flywheel weight 4 on the axis 35 of the removable base plate 28.
  • the cover 33 is made of an elastic material, e.g. B. made of foam and can be glued to the swing weight 4.
  • FIG. 4 shows the dust collecting device 40 suitable for this.
  • This consists essentially of the dust collecting container 37 with a handle 38 and the dust filter 39 which can be inserted into the dust collecting container 37.
  • the dust collecting container 37 is formed with a closure part 27 which is identical to the base plate 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

Die Erfindung betrifft ein Gerät zum Behandeln, insbesondere zum Reinigen, Polieren und Abschleifen von Oberflächen, wie es im Oberbegriff des Anspruches 1 angeführt ist.
Bei einem bekannten Gerät dieser Art (EP-A-0 111 720) ist das exzentrische Schwunggewicht unmittelbar an der Motorwelle befestigt. Dies führt aber in nachteiliger Weise zu einer übermäßig starken Beanspruchung der Motorlager und somit auch zu einer verminderten Lebensdauer des Motors.
Im Falle, daß von der Motorwelle zusätzlich zum exzentrischen Schwunggewicht auch ein Staub absaugender Gebläseläufer für eine am Gerätegehäuse angeordnete Staubfangvorrichtung antreibbar ist, kommt hinzu, daß sowohl das exzentrische Schwunggewicht bzw. das Werkzeug, als auch der Staub absaugende Gebläseläufer immer mit gleicher Antriebsgeschwindigkeit angetrieben werden.
Um damit eine Oberflächenbehandlung bei gleichzeitiger Staubabsaugung besonders wirksam durchführen zu können, sind aber unterschiedliche Abtriebsgeschwindigkeiten für das Werkzeug und den Staub absaugenden Gebläseläufer erforderlich, wie dies beispielsweise das Gerät gemäß der US-A-2 764 852 zeigt.
Bei diesem und auch bei anderen ähnlichen Geräten dieser Art,z. B. US-A-3, 231 917 wird das Werkzeug jedoch über einen Kurbeltrieb vom Motor schwingend bewegt, wobei die Kurbel zum Zwecke der Geschwindigkeitsverminderung an einem am Gerätegehäuse drehbar gelagerten Vorgelegerad eines Untersetzungsgetriebes angeordnet ist.The invention relates to a device for treating, in particular for cleaning, polishing and sanding surfaces, as stated in the preamble of claim 1.
In a known device of this type (EP-A-0 111 720) the eccentric swing weight is attached directly to the motor shaft. However, this disadvantageously leads to an excessive load on the motor bearings and thus to a reduced service life of the motor.
In the event that a dust-extracting fan rotor can be driven by the motor shaft in addition to the eccentric flywheel for a dust catcher arranged on the device housing, in addition, both the eccentric flywheel weight or the tool and the dust-extracting fan rotor are always driven at the same drive speed .
In order to be able to carry out a surface treatment with simultaneous dust extraction particularly effectively, however, different output speeds for the tool and the dust-extracting fan rotor are required, as is shown, for example, by the device according to US Pat. No. 2,764,852.
In this and also in other similar devices of this type, e.g. B. US-A-3, 231 917, the tool is, however, oscillatingly moved by the engine via a crank mechanism, the crank being arranged for the purpose of speed reduction on a countershaft gear of a reduction gear which is rotatably mounted on the device housing.

Bei einem solchen Antriebssystem werden aber die Zentrifugalkräfte des schwingend angetriebenen Werkzeuges bzw. Werkzeugträgers über dem Lager der Kurbelwelle vom Gerätegehäuse aufgenommen; sie können daher auch nicht die Wirkung des Gerätes unterstützen, wie dies beim eingangs genannten Antriebssystem in vorteil bringender Weise der Fall ist. Andererseits würden dabei, uzw. bei Anordnung eines exzentrischen Schwunggewichtes anstelle der Kurbel oder auch mehrerer Kurbeln, die Schwingungen nicht mehr auf das Werkzeug übertragen werden.In such a drive system, however, the centrifugal forces of the vibratingly driven tool or tool carrier are absorbed by the device housing above the bearing of the crankshaft; they can therefore not support the effect of the device, as is the case in an advantageous manner with the drive system mentioned at the beginning. On the other hand, If an eccentric swing weight is arranged instead of the crank or several cranks, the vibrations are no longer transmitted to the tool.

Es ist Aufgabe der Erfindung, die genannten Nachteile zu beseitigen. Gelöst wird diese Aufgabe durch die im kennzeichnenden Teil des Anspruches 1 angeführten Merkmale.The object of the invention is to eliminate the disadvantages mentioned. This object is achieved by the features stated in the characterizing part of claim 1.

Durch diese Merkmale werden beim eingangs genannten Antriebssystem nicht nur die Motorlager von den Zentrifugalkräften des exzentrischen Schwunggewichtes entlastet, sondern es ist darüber hinaus auch eine Schwingungsübertragung auf das Werkzeug mit einer gegenüber der Drehzahl der Motorwelle geringeren Schwingungszahl durchführbar. Dabei wird durch eine symmetrische Anordnung der schwingend bewegten Masse, insbesondere durch Aufteilung des exzentrischen Schwunggewichtes an zumindest zwei im schwingbaren Werkzeugträger symmetrisch zur Motorwelle angeordneter, in gleicher Richtung bewegbarer Vorgelegeräder eines Untersetzungsgetriebes ein gleichmäßiges Ausschwingen des Werkzeuges erreicht und somit auch ein Übertragen der Schwingungen auf das Gerätegehäuse vermieden.
Durch zusätzliche, in den abhängigen Unteransprüchen dargelegte Maßnahmen kann ein solches Gerät außerdem noch so ausgebildet werden, daß damit eine Staubabsaugung sowohl alternativ, als auch gleichzeitig durchführbar ist, wobei in beiden Fällen unterschiedliche Antriebsgeschwindigkeiten für das Werkzeug und den Staub absaugenden Gebläseläufer möglich sind. Die durch die Erfindung erzielbaren Vorteile sind daher im wesentlichen in einer längeren Lebensdauer und in weiteren Anwendungsmöglichkeiten des eingangs genannten Antriebssystems zu sehen.These features not only relieve the motor bearings of the centrifugal forces of the eccentric swing weight in the drive system mentioned at the outset, but also provide a vibration transfer to the tool with a lower number of vibrations than the speed of the motor shaft feasible. A symmetrical arrangement of the vibrating mass, in particular by dividing the eccentric swing weight on at least two countershaft gears of a reduction gear, which are arranged symmetrically to the motor shaft and are movable in the same direction, achieves a uniform swinging out of the tool and thus also a transmission of the vibrations to the Device housing avoided.
By additional measures set out in the dependent subclaims, such a device can also be designed so that it can be used for dust extraction both alternatively and simultaneously, whereby in both cases different drive speeds for the tool and the dust-extracting fan rotor are possible. The advantages that can be achieved by the invention are therefore essentially to be seen in a longer service life and in further possible uses of the drive system mentioned at the beginning.

Die Erfindung wird der Übersicht wegen anhand von drei bevorzugten Ausführungsbeispielen zeichnerisch näher dargestellt:
Es zeigen Figur 1 im Querschnitt ein erfindungsgemäßes Gerät zum Behandeln, z. B. zum Reinigen von Oberflächen od. dgl., Figur 2 im Querschnitt das Gerät nach Figur 1 mit einer zusätzlichen Staubabsaugeinrichtung, zum Reinigen od. dgl. bei gleichzeitiger Staubabsaugung, Figur 3 im Querschnitt eine Variante des Gerätes nach Figur 1 zum Reinigen od. dgl. oder alternativ zum Staub absaugen und Figur 4 im Querschnitt eine zum Zwecke der Staubabsaugung einsetzbare Staubfangvorrichtung für Figur 3.For reasons of clarity, the invention is illustrated in more detail based on three preferred exemplary embodiments:
1 shows in cross section an inventive device for treatment, for. B. for cleaning surfaces or the like., FIG. 2 in cross section the device according to FIG. 1 with an additional dust extraction device, for cleaning or the like with simultaneous dust extraction, FIG. 3 in cross section a variant of the device according to FIG. 1 for cleaning or. Like. or as an alternative to vacuuming, and FIG. 4 shows in cross section a dust collection device for FIG. 3 that can be used for the purpose of dust extraction.

Das in den Figuren 1, 2 und 3 dargestellte Gerät besteht im wesentlichen aus dem Gehäuse 2 und einer am Gehäuse 2 schwingbar gelagerten, motorisch unwuchtig bewegten Antriebseinheit 3 für das Werkzeug 1. Das Gehäuse 2 ist senkrecht zur Schnittebene in drei Teilen 10 , 11,12 geteilt, welche Teile durch die Schrauben 9 - dargestellt durch Symmetrielinien - miteinander verbunden sind.
Im weiteren besteht die Antriebseinheit 3 aus dem Elektromotor 5, dessen aus dem Motorgehäuse hervorragende Welle 13 das exzentrische Schwunggewicht 4 antreibt und einem an der Seite des Schwunggewichtes 4 am Motorgehäuse 5 durch den Bügel 7 und den Schrauben 6 befestigten Werkzeugträger 8. An der Bodenplatte des napfförmig ausgebilden Werkzeugträgers 8 ist das als Reinigungsbürste ausgebildete Werkzeug 1 mittels der Schnappkupplung 22 einsetzbar.
Die Antriebseinheit 3 ist durch drei zwischen dem Gehäuseende 12 und dem Werkzeugträger 8 symmetrisch angeordnete Schwingelemente 15 und ein in Achsrichtung des Motors 1 am Gehäuseteil 10 angeordnetes Pendellager 14 schwingbar am Gehäuse 2 gehalten und wird dadurch eine kreisförmig pendelnde Bewegung ausführen, die dem Werkzeug 1 übertragen wird. Es ist jedoch auch eine andere Art der Schwinglagerung möglich. Am Gehäuse 2 befinden sich weiters elektrische Einrichungen, wie der Ein- und Ausschalter 17 und die Ladebuchse 18 für mehrere im Gerät angeordnete Akku-Batterien 16.
Wie Figur 2 und 3 zeigen, kann erforderlichenfalls an der Antriebseinheit 3, uzw. an der Motorwelle 13 auch zusätzlich ein Staub absaugender Gebläseläufer 31 für eine am Gerät einsetzbare Staubfangvorrichtung 40 angeordnet sein.The device shown in FIGS. 1, 2 and 3 essentially consists of the housing 2 and a drive unit 3 for the tool 1, which is mounted on the housing 2 such that it can vibrate, and is motor-unbalanced. The housing 2 is perpendicular to the cutting plane in three parts 10, 11, 12 divided, which parts are connected by the screws 9 - represented by lines of symmetry.
Furthermore, the drive unit 3 consists of the electric motor 5, the shaft 13, which projects from the motor housing, drives the eccentric flywheel 4 and a tool holder 8 fastened to the side of the flywheel 4 on the motor housing 5 by the bracket 7 and the screws 6 Cup-shaped tool carrier 8, the tool 1 designed as a cleaning brush can be used by means of the snap coupling 22.
The drive unit 3 is swingably held on the housing 2 by three oscillating elements 15 arranged symmetrically between the housing end 12 and the tool carrier 8 and a self-aligning bearing 14 arranged on the housing part 10 in the axial direction of the motor 1 and will thereby execute a circular oscillating movement which transmits the tool 1 becomes. However, another type of vibratory mounting is also possible. There are also electrical devices on the housing 2, such as the on / off switch 17 and the charging socket 18 for a plurality of rechargeable battery batteries 16 arranged in the device.
As FIGS. 2 and 3 show, if necessary, the drive unit 3, etc. On the motor shaft 13, a dust-extracting fan rotor 31 can also be additionally arranged for a dust-collecting device 40 that can be used on the device.

Erfindungsemäß ist das exzentrische schwunggewicht 4 der Antriebseinheit 3 für sich am werkzeugträger 8, uzw. an den Achsen 35 bzw. 24 drehbar gelagert und ist von der Motorwelle 13 Über die Kupplung 29 bzw. das Untersetzungsgetriebe 21 antreibbar. (Figur 3 bzw. 1 und, 2).According to the invention, the eccentric swing weight 4 of the drive unit 3 is on the tool holder 8, etc. is rotatably mounted on the axles 35 and 24 and can be driven by the motor shaft 13 via the clutch 29 or the reduction gear 21. (Figure 3 or 1 and, 2).

Gemäß Figur 1, einer bevorzugten Ausführungsform der Erfindung, ist dabei das Schwunggewicht 4 an zwei identischen Vorgelegerädern, 20, 20' des Untersetzungsgetriebes 21 verteilt. Diese sind in einer Ebene und symmetrisch zueinander am Werkzeugträger 8, uzw. an den Achsen 24 zusammen mit den Schwunggewichtsteilen 4 drehbar gelagert und werden von dem an der Motorwelle 13 befestigten Zahnritzel 19 angetrieben.According to FIG. 1, a preferred embodiment of the invention, the flywheel weight 4 is distributed to two identical countershafts 20, 20 'of the reduction gear 21. These are in one plane and symmetrical to one another on the tool carrier 8, etc. on the axles 24 together with the flywheel parts 4 rotatably and are driven by the pinion 19 attached to the motor shaft 13.

Die Figur 2 zeigt in erfindungsgemäßer Weiterbildung das Gerät gemäß Figur 1 zusätzlich mit der Staubabsaugeinrichtung 31, '40, mit deren Hilfe gleichzeitig auch eine Staubabsaugung durchführbar ist. Hiefür ist am Werkzeugträger 8 der ringförmige Ansatz 23 für den Gebläseläufer 31 vorgesehen. Der unterhalb des Untersetzungsgetriebes 21 liegende Gebläselaufer 31 ist mittels der Schraube 42 mit dem an der Motorwelle 13 befestigten Zahnritzel 19 verbunden.
Am ringförmigen Ansatz 23 ist das als Reinigungsbürste ausgebildete Werkzeug 1 mittels der Schnappkupplung 22 einsetzbar. Die Reinigungsbürste 1 besitzt zumindest eine zur Ansaugöffnung 32 des Gabläseläufers 31 führende Durchströmöffnung 41, die über eine radial am Werkzeugträger 8, uzw. am ringförmigen Ansatz 23 angeordnete Austrittsöffnung 44 und der flexiblen Verbindung 45 mit der am Gehäuse 2 angeordneten Staubfangvorrichtung 40 durchströmbar verbunden ist.In a further development according to the invention, FIG. 2 additionally shows the device according to FIG. 1 with the dust extraction device 31, '40, with the aid of which dust extraction can also be carried out at the same time. For this purpose, the annular extension 23 for the fan rotor 31 is provided on the tool carrier 8. The blower rotor 31 located below the reduction gear 21 is connected by means of the screw 42 to the toothed pinion 19 fastened to the motor shaft 13.
The tool 1, which is designed as a cleaning brush, can be used on the annular extension 23 by means of the snap coupling 22. The cleaning brush 1 has at least one through-opening 41 leading to the suction opening 32 of the blower rotor 31, which through a radial opening on the tool carrier 8, etc. outlet opening 44 arranged on the ring-shaped extension 23 and the flexible connection 45 is connected to the dust collecting device 40 arranged on the housing 2 so that it can flow through.

In Figur 3 ist gemäß einer anderen Ausführungsform der Erfindung das Schwunggewicht 4 über die Kupplung 29 antreibbar.
Die Kupplung 29 ist gemäß einer Fortbildung der Erfindung lösbar ausgebildet, wobei der lösbare Kupplungsteil 29' mit dem exzentrischen Schwunggewicht 4 an der Achse 35 einer am Werkzeugträger 8 entfernbaren Bodenplatte 28 drehbar gelagert ist. Werkzeugträger 8 und Bodenplatte 28 sind zu diesem Zweck mit dem Gewinde- oder Bajonettverschluß 27 ausgebildet. Man kann dadurch nicht nur verschieden große Schwunggewichte 4 für eine Wirkungsänderung des Gerätes leicht anbringen, sondern in weiterer Folge auch die Umbildung des Gerätes zum Staub absaugen wesentlich erleichtern.According to another embodiment of the invention, the flywheel weight 4 can be driven via the clutch 29 in FIG.
The coupling 29 is designed to be releasable in accordance with a further development of the invention, the releasable coupling part 29 'with the eccentric swing weight 4 being rotatably mounted on the axis 35 of a base plate 28 which can be removed on the tool carrier 8. Tool carrier 8 and base plate 28 are formed with the threaded or bayonet lock 27 for this purpose. You can not only easily attach swing weights 4 of different sizes to change the effect of the device, but also make it much easier to convert the device to vacuuming.

Zum Zwecke einer Staubabsaugung ist in an sich bekannter Weise an der Motorwelle 13 zusätzlich ein Staub absaugender Gebläseläufer 31 angeordnet, dessen Nabe 30 in erfindungsgemäßer Fortbildung zugleich als der weitere Teil der lösbaren Kupplung 29 ausgebildet ist. Um nun bei der Oberflächenbehandlung den Gebläseläufer 31 außer Funktion zu setzen, ist bekannterweise eine die Ansaugöffnung 32 des Gebläseläufers 31 verschließende Abdeckung 33 vorgesehen, die gemäß einer anderen weiteren Fortbildung der Erfindung zusammen mit dem Schwunggewicht 4 an der Achse 35 der entfernbaren Bodenplatte 28 drehbar gelagert ist. Die Abdeckung 33 besteht aus einem elastischen Material, z. B. aus Schaumstoff und kann mit dem Schwunggewicht 4 verklebt sein.
Damit ist es nunmehr möglich, Schwunggewicht 4 und Abdeckung 33 mit nur mehr einem Handgriff, nämlich durch Lösen des Verschlußes 27 vom Gerät zu entfernen und anstelle dieser ebenso einfach eine Staubfangvorrichtung 40 zum Staub absaugen anzubringen. Der Schalter 17 ist mehrfach umschaltbar, sodaß einzelne Batterien 16 zum Zwecke einer Geschwindigkeitsänderung des Motors 5 zu- bzw. abgeschaltet werden können.For the purpose of dust extraction, a dust-extracting fan rotor 31 is additionally arranged on the motor shaft 13 in a manner known per se, the hub 30 of which, in a further development according to the invention, is also designed as the further part of the releasable clutch 29. In order now for the surface treatment To put the blower rotor 31 out of operation, it is known to provide a cover 33 which closes the suction opening 32 of the blower rotor 31 and, according to another further development of the invention, is rotatably mounted together with the flywheel weight 4 on the axis 35 of the removable base plate 28. The cover 33 is made of an elastic material, e.g. B. made of foam and can be glued to the swing weight 4.
It is now possible to remove the flywheel 4 and cover 33 from the device with just one hand, namely by loosening the closure 27, and instead of simply attaching a dust collector 40 for vacuuming. The switch 17 can be switched several times, so that individual batteries 16 can be switched on or off for the purpose of changing the speed of the motor 5.

In Figur 4 ist die hiefür geeignete Staubfangvorrichtung 40 näher dargestellt. Diese besteht im wesentlichen aus dem Staubfangbehälter 37 mit Handgriff 38 und dem in Staubfangbehälter 37 einsetzbaren Staubfilter 39. Der Staubfangbehälter 37 ist mit einem mit der Bodenplatte 28 identischen Verschlußteil 27 ausgebildet.FIG. 4 shows the dust collecting device 40 suitable for this. This consists essentially of the dust collecting container 37 with a handle 38 and the dust filter 39 which can be inserted into the dust collecting container 37. The dust collecting container 37 is formed with a closure part 27 which is identical to the base plate 28.

Die in den einzelnen Figuren dargestellten und beschriebenen erfindungsgemäßen Maßnahmen sind auch untereinander vertauschbar. So können z. B. Kupplung 29 und Untersetzungsgetriebe 21 gemeinsam angeordnet sein, oder es kann auch der Gebläseläufer 31 von Fig. 2 durch Abdeckung seiner Ansaugöffnung oder durch Entfernen desselben außer Funktion gesetzt werden. Es ist ferner möglich, den Motor 5 auch mit anderen als dargestellten Stromquellen, gegebenenfalls auch über elektrische Regeleinrichtungen stufenlos zu betreiben, sowie Ausbildungen vorzusehen, durch welche das Gerät auch als Bodengerät oder stationär verwendbar ist. Mit erfindungsgemäßem Gerät können Oberflächenbehandlungen jeglicher Art, einschließlich der Körpermassage durchgeführt werden.The measures according to the invention shown and described in the individual figures are also interchangeable. So z. B. clutch 29 and reduction gear 21 may be arranged together, or it can also the blower rotor 31 of Fig. 2 by covering its suction opening or by removing the same can be disabled. It is also possible to continuously operate the motor 5 with power sources other than those shown, if necessary also via electrical control devices, and to provide designs by which the device can also be used as a floor device or stationary. With the device according to the invention, surface treatments of any kind, including the body massage, can be carried out.

Claims (5)

  1. Apparatus for the treatment of surfaces, in particular for cleaning, polishing and abrading said surfaces, by means of a motor-driven mass moved in an unbalanced manner, said mass consisting at least of an electric motor (5) with an eccentric oscillating weight (4) driven by the motor shaft (13) and of a tool (1) attached to the side of said oscillating weight (4), said attachment optionally being made by way of a tool holder (8) to the motor casing (5), and which forms a drive unit (3) which is oscillatingly held in the casing (2), whereby, in addition, on the drive unit (3) a blower wheel (31) for a dust collector (40) to be applied in the apparatus may optionally be provided, said blower wheel being driven by the motor shaft (13), characterized in that the eccentric oscillating weight (4) is rotatingly held per se on the oscillatingly moved tool holder (8) or tool and is driven by the motor shaft (13) via a clutch (29) and/or a step-down gear (21), whereby said step-down gear (21) is provided with at least two identical layshaft gears, e.g. toothed wheels (20, 20'), which are rotatingly held on the oscillatingly moved tool holder (8) essentially in a plane and symmetrically to one another and in which the oscillating weight (4) is distributed in approximately the same parts by weight and through which the oscillating weight (4) is driven.
  2. Apparatus as claimed in claim 1, characterized in that the bearing(s) (24,35) for the eccentric oscillating weight (4) or the parts of the oscillating weight (4) and the layshaft gears (20, 20') are arranged in a floor plate (28) to be inserted in the tool holder (8).
  3. Apparatus as claimed in claim 1 or 2 with a dust-collecting blower wheel (31) which is additionally arranged on the drive unit (3), characterized in that the dust-collecting blower wheel (31) is attached subsequently to the step-down gear (21) on the motor shaft (13), whereby said blower wheel (31) is encompassed by a nose (23) arranged on the tool holder (8) and by a floor plate (28) provided with an intake (41) and connected to a dust collector (40) attached to the casing (2) via a passage (45) joined to said collector.
  4. Apparatus as claimed in claim 1 or 2 with a dust-collecting blower wheel (31) which is additionally arranged on the drive unit (3), characterized in that the dust-collecting blower wheel (31) is arranged between the bearing (24) or bearings (35), respectively, and the motor (5) on the motor shaft (13) and that a cover (33) covering in the known manner the intake (32) of the blower wheel (31) is rotatingly held in the insertable floor plate (28) together with the oscillating weight or parts (4) of the oscillating weight.
  5. Apparatus as claimed in one of the claims 1 to 4, characterized in that the floor plate (28) is arranged as a tool, e.g. a cleaning brush.
EP19870100838 1986-02-04 1987-01-22 Tool for the treatment of surfaces or the like Expired - Lifetime EP0232761B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT25786A AT397761B (en) 1986-02-04 1986-02-04 DEVICE FOR TREATING SURFACES OD. DGL.
AT257/86 1986-02-04

Publications (3)

Publication Number Publication Date
EP0232761A2 EP0232761A2 (en) 1987-08-19
EP0232761A3 EP0232761A3 (en) 1988-07-20
EP0232761B1 true EP0232761B1 (en) 1991-07-31

Family

ID=3485731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870100838 Expired - Lifetime EP0232761B1 (en) 1986-02-04 1987-01-22 Tool for the treatment of surfaces or the like

Country Status (3)

Country Link
EP (1) EP0232761B1 (en)
AT (1) AT397761B (en)
DE (1) DE3771738D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710527B1 (en) * 1993-02-04 2003-10-22 Robert Bosch Gmbh Handtool for machining surfaces
DE102004016015A1 (en) 2004-04-01 2005-10-20 Bosch Gmbh Robert Hand-guided grinding machine, grinding machine holding unit and grinding machine housing
GB2486666B (en) 2010-12-22 2012-11-07 Grey Technology Ltd Vacuum cleaner
GB201306512D0 (en) 2013-04-10 2013-05-22 Grey Technology Ltd Vacuum cleaner
GB2520188B (en) * 2013-06-05 2015-12-02 Grey Technology Ltd Hand-held vacuum cleaner and extendable hose
RU2675920C2 (en) 2013-06-05 2018-12-25 Грей Технолоджи Лимитед Handheld vacuum cleaner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE430719A (en) * 1937-10-22
US2764852A (en) * 1954-09-16 1956-10-02 Porter Cable Machine Co Portable power operated sanding machine
DE2319350A1 (en) * 1973-04-17 1974-11-07 Rolf Rodekuhr CAR VACUUM CLEANER WITH BUILT-IN CABLE DRUM AND GEAR INSERT FOR POLISHING AND GRINDING
FR2420276A7 (en) * 1978-03-16 1979-10-12 Valentini Guido Portable vibratory electric sander - uses fan to cool electric motor and is mounted against cam which drives sole plate
AT361175B (en) * 1978-09-04 1981-02-25 Lex Franz Ing CLEANING DEVICE FOR SHUTTERS
AT377173B (en) * 1982-11-19 1985-02-25 Lex Franz DEVICE FOR SURFACE TREATMENT, IN PARTICULAR TO CLEAN AND POLISH
DE3326854A1 (en) * 1983-07-26 1985-02-14 Festo KG, 7300 Esslingen Portable machine tool having a tool disc mounted by way of double eccentrics

Also Published As

Publication number Publication date
AT397761B (en) 1994-06-27
DE3771738D1 (en) 1991-09-05
EP0232761A2 (en) 1987-08-19
EP0232761A3 (en) 1988-07-20
ATA25786A (en) 1993-11-15

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