EP0261580A2 - Control apparatus - Google Patents

Control apparatus Download PDF

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Publication number
EP0261580A2
EP0261580A2 EP87113559A EP87113559A EP0261580A2 EP 0261580 A2 EP0261580 A2 EP 0261580A2 EP 87113559 A EP87113559 A EP 87113559A EP 87113559 A EP87113559 A EP 87113559A EP 0261580 A2 EP0261580 A2 EP 0261580A2
Authority
EP
European Patent Office
Prior art keywords
disc
control device
slide element
guide band
lateral guides
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
EP87113559A
Other languages
German (de)
French (fr)
Other versions
EP0261580A3 (en
EP0261580B1 (en
Inventor
Gernot Jacob
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.)
Progress Elektrogeraete GmbH
Progress Elektrogeraete Mauz and Pfeiffer GmbH and Co
Original Assignee
Progress Elektrogeraete GmbH
Progress Elektrogeraete Mauz and Pfeiffer GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Progress Elektrogeraete GmbH, Progress Elektrogeraete Mauz and Pfeiffer GmbH and Co filed Critical Progress Elektrogeraete GmbH
Priority to AT87113559T priority Critical patent/ATE72744T1/en
Publication of EP0261580A2 publication Critical patent/EP0261580A2/en
Publication of EP0261580A3 publication Critical patent/EP0261580A3/en
Application granted granted Critical
Publication of EP0261580B1 publication Critical patent/EP0261580B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers

Definitions

  • the invention relates to a control device according to the preamble of claim 1.
  • the invention thus relates in particular to a control device for the drive motor of a vacuum cleaner, but it is also suitable for controlling other electrical or mechanical components.
  • the electrical components are usually combined on a printed circuit board, an annular potentiometer being soldered to the underside of the circuit board.
  • This ring-shaped potentiometer controls the power of the drive motor and for this purpose is penetrated by the control axis of a generally circular disk, at the other end of which a rotary knob can be arranged.
  • the potentiometer can thus be adjusted by means of the rotary movement transmitted to the circular disc by the rotary knob and thus the motor power can be controlled.
  • the rotation is usually about 270 °.
  • the present invention has for its object to develop a control device of the type under consideration so that it is space-saving and also works reliably over a long service life.
  • the control device should be cheap to produce as a mass part.
  • the control device has a flexible guide band which is formed on the outer circumference of the circular disk and is provided with a slide element at the free end.
  • the guide band is arranged between lateral guides and has such a rigidity that it rotates when the slide element is advanced in the direction of the disk and is wound on its circumference.
  • the slide element is moved in the opposite direction, the disk is correspondingly rotated in the reverse direction, the guide band being unwound again from the periphery of the disk.
  • the side guides prevent the guide from dodging bandes when it is wound on the circumference of the disc, a suitable space remaining between the lateral guides and the guide band, so that practically no frictional forces make the movement of the slide element more difficult.
  • the circular disc and the guide band are made in one piece from a suitable plastic, the manufacturing costs being extremely low.
  • the slide element can also be integrally formed on the guide band.
  • the circular disc with the integrally formed guide band is practically indestructible, so that the control device according to the invention can function properly even over a long service life of the associated vacuum cleaner.
  • Another advantage is that, depending on the size of the radius of the circular disc, the size of the sliding path of the slide element can be changed. If only a small sliding path is available, there will be a small radius chosen for the disc, so that even a small displacement of the slider element rotates the disc by a relatively large angle. With a larger radius of the disk, the angle of rotation decreases for a given length of the sliding path, so that a slower rotary movement takes place.
  • the circular disc is arranged on a plate which is penetrated by the control axis of the disc and has the lateral guides for the guide band. This plate is placed on the electrical circuit board of the vacuum cleaner.
  • the lateral guides for the guide band have a rectilinear section which contains the sliding path of the sliding element, and stops can be provided to limit the sliding path.
  • This rectilinear guide section can run essentially tangentially to the circular disk, but it can also merge into an arcuate section which runs to the circumference of the circular disk if it has a reduced diameter for a given position of the rectilinear section and the control axis.
  • the lateral guides can also at least partially encompass the outer circumference of the disk at a suitable distance, which makes it easier to wind up the tape, which can therefore not deflect laterally.
  • the lateral guides for the guide band are expediently formed by webs arranged on the plate.
  • the outer web of the guide can be formed continuously and additionally slidably receive the slide element for guiding it. To do this the slide element has a groove on its underside, in which the web is received with little play.
  • the guide for the guide band can be formed by short, spaced webs.
  • the slide element can be designed directly as an operating button and protrude through a guide slot in the vacuum cleaner housing into its interior.
  • the slider element can also be overlapped by a fork of a separate slider button, in which case the slider element can be integrally formed on the belt.
  • the slide button should have an elongated shape, which is selected so that the associated guide slot in the vacuum cleaner housing is always covered, so that no foreign particles can enter the interior of the housing through the guide slot.
  • the circular disk expediently has a cut-away section in the region of the starting point of the guide band, which section serves as free space for a molding tool for shaping the band.
  • the control device contains a circular disc 1, which is provided with a control axis 2, which engages in a potentiometer (not shown) and adjusts it as it rotates, thereby controlling the output of a drive motor.
  • a flexible control band 3 is formed on the disk 1 and a slide element 4 is located at the free end thereof.
  • the slider element 4 is a molded part with two parallel webs 5, which are overlapped by a fork of a slider button, also not shown.
  • a section 7 is cut away from the circular disk 1, which creates a free space for a molding tool for molding the guide band 3.
  • a plate 8 which receives the disc 1, wherein the control axis 2 of the disc 1 passes through a bore 9 of the plate 8.
  • the plate 8 is in turn placed on a printed switch plate, not shown, on the underside of which is the potentiometer in which the control axis 2 engages.
  • the plate 8 contains an elongated web 10 with a rectilinear section 11 and an approximately semicircular section 12 as well as short webs 13 arranged at a distance from the section 11. These webs form lateral guides for the guide band 3, which therefore cannot deflect laterally.
  • the slide element 4 (Fig. 1) contains on its underside a groove 14 which is slightly wider than the web 11, so that the slide element 4 can be slidably placed on the web 11. At the end of the web 11 there is a stop 15 for the slide element 4.
  • the slide element 4 is moved along the straight guide section 11 to adjust the potentiometer (not shown).
  • the guide band 3 which is flexible but relatively stiff, rotates the disc 1 in the direction of arrow A (FIG. 1), the guide band 3 winding onto the circumference of the disc 1 because it can neither laterally deflect between the webs 11 and 13 of the rectilinear guide section nor between the circumference of the disk 1 and the circular-arch-shaped web 12 which is slightly spaced from the circumference of the disk 1.
  • the slide element 4 moves in the opposite direction, the direction of rotation of the disk 1 changes accordingly, the guide band 3 being unwound from the circumference of the disk 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Mechanical Control Devices (AREA)
  • Polarising Elements (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The control apparatus is provided, in particular, for controlling the output of the drive motor of a vacuum cleaner. It contains a circular disc (1) having a control axle (2) which engages in a potentiometer which is adjustable by means of the rotary movement of the control axle (2). Moulded onto the outside circumference of the disc (1) is a flexible, but relatively rigid guide strip (3), the free end of which is provided with a slide element (4). The slide element (4) can be moved along a straight guide portion, the guide strip (3) being arranged between lateral guides. When the slide element (4) is moved in the direction of the disc (1), the guide strip (3) rotates the disc (1) and is thereby wound onto its circumference whereas, with displacement of the slide element (3) in the opposite direction, it is unwound from the circumference of the disc (1) again. The control apparatus requires little space and operates reliably even over a long duration of use (Figure 1). <IMAGE>

Description

Die Erfindung betrifft eine Steuervorrichtung gemäß dem Oberbegriff des Anspruchs 1. Damit betrifft die Erfindung insbesondere eine Steuervorrichtung für den Antriebsmotor eines Staubsaugers, sie ist jedoch ebenso zur Steuerung anderer elektrischer oder mechanischer Bauteile geeignet.The invention relates to a control device according to the preamble of claim 1. The invention thus relates in particular to a control device for the drive motor of a vacuum cleaner, but it is also suitable for controlling other electrical or mechanical components.

Bei einem Staubsauger sind üblicherweise die elektrischen Bauteile auf einer gedruckten Leiterplatte zusammengefaßt, wobei an der Unterseite der Leiterplatte ein ringförmiges Potentiometer angelötet ist. Dieses ringförmige Potentio­meter steuert die Leistung des Antriebsmotors und wird hierzu von der Steuerachse einer im allgemeinen kreisför­migen Scheibe durchgriffen, an deren anderen Ende ein Dreh­knopf angeordnet sein kann. Mittels der durch den Drehknopf auf die kreisförmige Schreibe übertragenen Drehbewegung läßt sich somit das Potentiometer verstellen und damit die Motorleistung steuern. Die Drehbewegung beträgt üblicher­weise etwa 270°.In a vacuum cleaner, the electrical components are usually combined on a printed circuit board, an annular potentiometer being soldered to the underside of the circuit board. This ring-shaped potentiometer controls the power of the drive motor and for this purpose is penetrated by the control axis of a generally circular disk, at the other end of which a rotary knob can be arranged. The potentiometer can thus be adjusted by means of the rotary movement transmitted to the circular disc by the rotary knob and thus the motor power can be controlled. The rotation is usually about 270 °.

Bei Bodenstaubsaugern ist häufig eine Steuervorrichtung anzutreffen, die anstelle eines Drehknopfes einen Schie­berknopf verwendet, wobei diese Ausbildung den Vorteil hat, daß der entlang einer geradlinigen Bahn bewegbare Schieberknopf von dem Fuß einer Bedienungsperson betätigt werden kann, wodurch die Handhabung des Bodenstaubsaugers erleichtert ist. Dabei wird die geradlinige Bewegung des Schieberknopfes durch eine Zahnstange in eine Drehbewegung eines Zahnrades umgesetzt, die die mit der Steuerachse versehene Scheibe bildet. Die Zahnstange bewegt sich an dem ortsfest gelagerten Zahnrad vorbei, wobei diese Aus­bildung den Nachteil hat, daß hinter dem Zahnrad Platz für die Aufnahme der Zahnstange vorgesehen sein muß. Außer­dem können die Zähne der Zahnstange und des Zahnrades, die überlicherweise aus Kunststoff bestehen, im Laufe einer län­geren Nutzungsdauer so abgenutzt werden, daß die Steuer­vorrichtung nicht mehr fehlerlos funktioniert.In the case of cylinder vacuum cleaners, a control device is frequently encountered which uses a slide button instead of a rotary button, this design having the advantage that the slide button which can be moved along a straight path can be actuated by the foot of an operator, which makes handling of the cylinder vacuum cleaner easier. The linear movement of the slide button is converted by a rack into a rotary movement of a gear, which forms the disc provided with the control axis. The rack moves the stationary gear is over, this design has the disadvantage that there must be space behind the gear for receiving the rack. In addition, the teeth of the rack and the gear, which are usually made of plastic, can be worn over a longer period of use so that the control device no longer functions properly.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Steuervorrichtung der betrachteten Art so weiter zu entwickeln, daß sie platzsparend ist und auch über eine lange Nutzungsdauer zuverlässig arbeitet. Darüberhinaus soll die Steuervorrichtung als Massenteil billig her­stellbar sein.The present invention has for its object to develop a control device of the type under consideration so that it is space-saving and also works reliably over a long service life. In addition, the control device should be cheap to produce as a mass part.

Diese Aufgabe wird erfindungsgemäß durch die im Kenn­zeichen des Anspruchs 1 genannten Merkmale gelöst. Vor­teilhafte Weiterbildungen der Erfindung sind in den Un­teransprüchen gekennzeichnet.This object is achieved by the features mentioned in the characterizing part of claim 1. Advantageous developments of the invention are characterized in the subclaims.

Die erfindungsgemäße Steuervorrichtung hat ein flexibles Führungsband, das am Außenumfang der kreisförmigen Schei­be angeformt und an dem freien Ende mit einem Schieber­element versehen ist. Das Führungsband ist zwischen seit­lichen Führungen angeordnet und weist eine solche Steifig­keit auf, daß es beim Vorschub des Schieberelementes in Richtung der Scheibe diese dreht und auf deren Umfang auf­gewickelt wird. Bei der Bewegung des Schieberelementes in entgegengesetzter Richtung wird die Scheibe entsprechend in Umkehrrichtung gedreht, wobei das Führungsband vom Umfang der Scheibe wieder abgewickelt wird. Die seitlichen Führungen verhindern dabei ein Ausweichen des Führungs­ bandes bei dessen Aufwickeln auf dem Umfang der Scheibe, wobei zwischen den seitlichen Führungen und dem Führungs­band ein geeigneter Zwischenraum verbleibt, so daß prak­tisch keine Reibungskräfte die Bewegung des Schieberele­mentes erschweren.The control device according to the invention has a flexible guide band which is formed on the outer circumference of the circular disk and is provided with a slide element at the free end. The guide band is arranged between lateral guides and has such a rigidity that it rotates when the slide element is advanced in the direction of the disk and is wound on its circumference. When the slide element is moved in the opposite direction, the disk is correspondingly rotated in the reverse direction, the guide band being unwound again from the periphery of the disk. The side guides prevent the guide from dodging bandes when it is wound on the circumference of the disc, a suitable space remaining between the lateral guides and the guide band, so that practically no frictional forces make the movement of the slide element more difficult.

Die kreisförmige Scheibe und das Führungsband sind ein­stückig aus einem geeigneten Kunststoff hergestellt, wo­bei die Herstellungskosten äußerst gering sind. Das Schie­berelement kann ebenfalls einstückig an dem Führungsband angeformt sein.The circular disc and the guide band are made in one piece from a suitable plastic, the manufacturing costs being extremely low. The slide element can also be integrally formed on the guide band.

Da sich das Führungsband beim Vorschub des Schieberele­mentes in Richtung der kreisförmigen Scheibe auf deren Außenumfang aufwickelt, ist der Platzbedarf der Steuer­vorrichtung gering. Hinter der Scheibe wird keinerlei Platz beansprucht, da sich das Führungsband -im Gegensatz zu einem eine Zahnstange aufweisenden Mechanismus- nicht an der kreisförmigen Scheibe vorbeibewegt.Since the guide band winds up on the outer circumference when the slide element is advanced in the direction of the circular disk, the space requirement of the control device is small. No space is required behind the disk, since the guide band does not move past the circular disk, in contrast to a mechanism having a toothed rack.

Die kreisförmige Scheibe mit dem angeformten Führungs­band ist praktisch unverwüstlich, so daß auch über eine lange Nutzungsdauer des zugehörigen Staubsaugers ein einwandfreies Funktionieren der erfindungsgemäßen Steuer­vorrichtung gewährleistet ist. Ein weiterer Vorteil liegt darin, daß in Abhängigkeit von der Größe des Radius der kreisförmigen Scheibe die Größe des Schiebewegs des Schieberelementes veränderbar ist. Wenn nur ein kleiner Schiebeweg zur Verfügung steht, wird ein kleiner Radius für die Scheibe gewählt, so daß bereits eine kleine Ver­schiebung des Schieberelementes die Scheibe um einen verhältnismäßig großen Winkel dreht. Bei einem größeren Radius der Scheibe verringert sich der Drehwinkel bei vorgegebener Länge des Schiebeweges, so daß eine langsamere Drehbewegung erfolgt.The circular disc with the integrally formed guide band is practically indestructible, so that the control device according to the invention can function properly even over a long service life of the associated vacuum cleaner. Another advantage is that, depending on the size of the radius of the circular disc, the size of the sliding path of the slide element can be changed. If only a small sliding path is available, there will be a small radius chosen for the disc, so that even a small displacement of the slider element rotates the disc by a relatively large angle. With a larger radius of the disk, the angle of rotation decreases for a given length of the sliding path, so that a slower rotary movement takes place.

Mit großem Vorteil wird vorgeschlagen, daß die kreis­förmige Scheibe auf einer Platte angeordnet ist, die von der Steuerachse der Scheibe durchgriffen ist und die seitlichen Führungen für das Führungsband aufweist. Diese Platte wird auf die elektrische Leiterplatte des Staub­saugers aufgesetzt.It is proposed with great advantage that the circular disc is arranged on a plate which is penetrated by the control axis of the disc and has the lateral guides for the guide band. This plate is placed on the electrical circuit board of the vacuum cleaner.

Die seitlichen Führungen für das Führungsband haben einen geradlinigen Abschnitt, der den Schiebeweg des Schieber­elementes enthält, wobei zur Begrenzung des Schiebeweges Anschläge vorgesehen sein können. Dieser geradlinige Führungs­abschnitt kann im wesentlichen tangential zu der kreisför­migen Scheibe verlaufen, er kann aber auch in einen bogen­förmigen Abschnitt übergehen, der zum Umfang der kreis­förmigen Scheibe verläuft, wenn diese bei vorgegebener Lage des geradlinigen Abschnitts und der Steuerachse einen verkleinerten Durchmesser erhält. Die seitlichen Führungen können ferner wenigstens teilweise den Außenumfang der Scheibe in einem geeigneten Abstand umgreifen, wodurch das Aufwickeln des Bandes erleichtert ist, das somit nicht seitlich ausweichen kann.The lateral guides for the guide band have a rectilinear section which contains the sliding path of the sliding element, and stops can be provided to limit the sliding path. This rectilinear guide section can run essentially tangentially to the circular disk, but it can also merge into an arcuate section which runs to the circumference of the circular disk if it has a reduced diameter for a given position of the rectilinear section and the control axis. The lateral guides can also at least partially encompass the outer circumference of the disk at a suitable distance, which makes it easier to wind up the tape, which can therefore not deflect laterally.

Die seitlichen Führungen für das Führungsband sind zweck­mäßigerweise durch auf der Platte angeordnete Stege ge­bildet. Der äußere Steg der Führung kann dabei durch­gehend ausgebildet sein und zusätzlich das Schieberele­ment zu dessen Führung verschiebbar aufnehmen. Dazu hat das Schieberelement eine Nut an seiner Unterseite, in die der Steg mit geringem Spiel aufgenommen ist. Auf der Innenseite kann die Führung für das Führungsband durch kurze, im Abstand angeordnete Stege gebildet sein.The lateral guides for the guide band are expediently formed by webs arranged on the plate. The outer web of the guide can be formed continuously and additionally slidably receive the slide element for guiding it. To do this the slide element has a groove on its underside, in which the web is received with little play. On the inside, the guide for the guide band can be formed by short, spaced webs.

Das Schieberelement kann direkt als Bedienungsknopf aus­gebildet sein und durch einen Führungsschlitz in dem Staubsaugergehäuse in dessen Innenraum hineinragen. Das Schieberelement kann alternativ hierzu auch von einer Gabel eines gesonderten Schieberknopfes übergriffen wer­den, wobei in diesem Falle das Schieberelement einstückig an dem Band angeformt sein kann. Der Schieberknopf sollte eine langgestreckte Form haben, die so gewählt ist, daß der zugehörige Führungsschlitz in dem Staubsaugergehäuse stets überdeckt ist, so daß keine Fremdpartikel durch den Führungsschlitz ins Innere des Gehäuses eintreten können.The slide element can be designed directly as an operating button and protrude through a guide slot in the vacuum cleaner housing into its interior. Alternatively, the slider element can also be overlapped by a fork of a separate slider button, in which case the slider element can be integrally formed on the belt. The slide button should have an elongated shape, which is selected so that the associated guide slot in the vacuum cleaner housing is always covered, so that no foreign particles can enter the interior of the housing through the guide slot.

Die kreisförmige Scheibe hat zweckmäßigerweise im Bereich des Ansatzpunktes des Führungsbandes einen weggeschnittenen Abschnitt, der als Freiraum für ein Formwerkzeug zum An­formen des Bandes dient.The circular disk expediently has a cut-away section in the region of the starting point of the guide band, which section serves as free space for a molding tool for shaping the band.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform sowie anhand der Zeichnung. Dabei zeigen:

  • Fig. 1 eine perspektivische Ansicht einer mit einem Führungsband und einem Schieber­element versehenen kreisförmigen Scheibe und
  • Fig. 2 eine perspektivische Ansicht einer die An­ordnung gemäß Fig. 1 aufnehmenden Platte.
Further features, advantages and details of the invention result from the following description of a preferred embodiment and from the drawing. Show:
  • Fig. 1 is a perspective view of a circular disc provided with a guide band and a slide element and
  • Fig. 2 is a perspective view of a plate receiving the arrangement of FIG. 1.

Die Steuervorrichtung enthält eine kreisförmige Scheibe 1, die mit einer Steuerachse 2 versehen ist, die in ein nicht dargestelltes Potentiometer eingreift und bei ihrer Drehung verstellt, wodurch die Leistung eines Antriebs­motors gesteuert wird. An der Scheibe 1 ist ein flexibles Steuerband 3 angeformt, an dessen freien Ende sich ein Schieberelement 4 befindet. Das Schieberelement 4 ist ein Formteil mit zwei parallel Stegen 5, die von einer Gabel eines ebenfalls nicht dargestellten Schieberknopfs über­griffen werden.The control device contains a circular disc 1, which is provided with a control axis 2, which engages in a potentiometer (not shown) and adjusts it as it rotates, thereby controlling the output of a drive motor. A flexible control band 3 is formed on the disk 1 and a slide element 4 is located at the free end thereof. The slider element 4 is a molded part with two parallel webs 5, which are overlapped by a fork of a slider button, also not shown.

Im Bereich des Ansatzes 6 des Führungsbandes 3 ist aus der kreisförmigen Scheibe 1 ein Abschnitt 7 weggeschnitten, wodurch ein Freiraum für ein Formwerkzeug zum Anformen des Führungsbandes 3 entsteht.In the area of the shoulder 6 of the guide band 3, a section 7 is cut away from the circular disk 1, which creates a free space for a molding tool for molding the guide band 3.

In Fig. 2 ist eine Platte 8 dargestellt, die die Scheibe 1 aufnimmt, wobei die Steuerachse 2 der Scheibe 1 eine Bohrung 9 der Platte 8 durchgreift. Die Platte 8 wird ihrerseits auf eine nicht dargestellte gedruckte Schalter­platte aufgesetzt, an deren Unterseite sich das Potentio­meter befindet, in das die Steuerachse 2 eingreift.In Fig. 2, a plate 8 is shown, which receives the disc 1, wherein the control axis 2 of the disc 1 passes through a bore 9 of the plate 8. The plate 8 is in turn placed on a printed switch plate, not shown, on the underside of which is the potentiometer in which the control axis 2 engages.

Die Platte 8 enthält einen langgestreckten Steg 10 mit einem geradlinigen Abschnitt 11 und einem etwa halbkreis­förmigen Abschnitt 12 sowie im Abstand zu dem Abschnitt 11 angeordnete kurze Stege 13. Diese Stege bilden seit­liche Führungen für das Führungsband 3, das somit nicht seitlich ausweichen kann. Das Schieberelement 4 (Fig. 1) enthält an seiner Unterseite eine Nut 14, die geringfügig breiter als der Steg 11 ist, so daß das Schieberelement 4 verschiebbar auf den Steg 11 aufgesetzt werden kann. Am Ende des Stegs 11 befindet sich ein Anschlag 15 für das Schieberelement 4.The plate 8 contains an elongated web 10 with a rectilinear section 11 and an approximately semicircular section 12 as well as short webs 13 arranged at a distance from the section 11. These webs form lateral guides for the guide band 3, which therefore cannot deflect laterally. The slide element 4 (Fig. 1) contains on its underside a groove 14 which is slightly wider than the web 11, so that the slide element 4 can be slidably placed on the web 11. At the end of the web 11 there is a stop 15 for the slide element 4.

Das Schieberelement 4 wird zur Verstellung des nicht dar­gestellten Potentiometers entlang des geradlinigen Führungs­abschnitts 11 bewegt. Beim Vorschub in Richtung der Scheibe 1 dreht das Führungsband 3, das zwar flexibel, jedoch ver­hältnismäßig steif ausgebildet ist, die Scheibe 1 in Rich­tung des Pfeils A (Fig. 1), wobei sich das Führungsband 3 auf den Umfang der Scheibe 1 aufwickelt, da es weder zwischen den Stegen 11 und 13 des geradlinigen Führungs­abschnitts noch zwischen dem Umfang der Scheibe 1 und dem kreisbogenförmigen Steg 12, der von dem Umfang der Scheibe 1 geringfügig beabstandet ist, seitlich ausweichen kann. Bei Bewegung des Schieberelements 4 in entgegengesetzter Richtung ändert sich entsprechend die Drehrichtung der Scheibe 1, wobei das Führungsband 3 von dem Umfang der Scheibe 1 abgewickelt wird.The slide element 4 is moved along the straight guide section 11 to adjust the potentiometer (not shown). When feeding in the direction of the disc 1, the guide band 3, which is flexible but relatively stiff, rotates the disc 1 in the direction of arrow A (FIG. 1), the guide band 3 winding onto the circumference of the disc 1 because it can neither laterally deflect between the webs 11 and 13 of the rectilinear guide section nor between the circumference of the disk 1 and the circular-arch-shaped web 12 which is slightly spaced from the circumference of the disk 1. When the slide element 4 moves in the opposite direction, the direction of rotation of the disk 1 changes accordingly, the guide band 3 being unwound from the circumference of the disk 1.

Claims (12)

1. Steuervorrichtung insbesondere für den Antriebsmotor eines Bodenstaubsaugers, mit einer kreisförmigen Scheibe mit einer Steuerachse, die vorzugsweise in ein Potentio­meter eingreift, das durch eine Drehbewegung der Steuer­achse verstellbar ist, und mit einer Einrichtung zum Drehen der Scheibe,
dadurch gekennzeichnet,
daß die Einrichtung zum Drehen der Scheibe (1) ein flexibles Führungsband (3) aufweist, das an dem Außen­umfang der Scheibe (1) angeformt ist und dessen freies Ende mit einem Schieberelement (4) versehen ist, und daß das Führungsband (3) zwischen seitlichen Führungen (10, 11, 12, 13) angeordnet ist und eine solche Steifigkeit aufweist, daß es beim Vorschub des Schieberelementes (4) in Richtung der Scheibe (1) diese dreht und auf deren Umfang aufgewickelt wird.1. Control device, in particular for the drive motor of a vacuum cleaner, with a circular disc with a control axis, which preferably engages in a potentiometer, which is adjustable by a rotary movement of the control axis, and with a device for rotating the disc,
characterized by
that the device for rotating the disc (1) has a flexible guide band (3) which is formed on the outer periphery of the disc (1) and the free end of which is provided with a slide element (4), and that the guide band (3) between lateral guides (10, 11, 12, 13) is arranged and has such a rigidity that when the slide element (4) is advanced in the direction of the disc (1) it rotates and is wound onto the circumference thereof. 2. Steuervorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Scheibe (1) auf einer Platte (8) angeordnet ist, die von der Steuerachse (2) der Scheibe durchgriffen ist und die seitlichen Führungen (10, 11, 12, 13) für das Führungsband (3) aufweist.2. Control device according to claim 1,
characterized in that the disc (1) is arranged on a plate (8) which is penetrated by the control axis (2) of the disc and has the lateral guides (10, 11, 12, 13) for the guide band (3). 3. Steuervorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die seitlichen Führungen einen geradlinigen Abschnitt (11) aufweisen, der im wesentlichen tangential zu der Scheibe (1) verläuft.3. Control device according to claim 1 or 2,
characterized in that the lateral guides have a rectilinear section (11) which is essentially tangential to the disc (1). 4. Steuervorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die seitlichen Führungen ferner wenigstens teilweise den Außenumfang der Scheibe umgreifen.4. Control device according to one of claims 1 to 3,
characterized in that the lateral guides also at least partially encompass the outer periphery of the disk. 5. Steuervorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die seitlichen Führungen durch Stege (10, 11, 12, 13) gebildet sind.5. Control device according to one of claims 1 to 4,
characterized in that the lateral guides are formed by webs (10, 11, 12, 13). 6. Steuervorrichtung nach Anspruch 5,
dadurch gekennzeichnet, daß das Schieberelement (4) auf einem Steg (10) verschiebbar angeordnet ist.6. Control device according to claim 5,
characterized in that the slide element (4) is arranged displaceably on a web (10). 7. Steuervorrichtung nach Anspruch 1 oder 6,
dadurch gekennzeichnet, daß das Schieberelement als Be­dienungsknopf ausgebildet ist.7. Control device according to claim 1 or 6,
characterized in that the slide element is designed as an operating button. 8. Steuervorrichtung nach Anspruch 1 oder 6,
dadurch gekennzeichnet, daß das Schieberelement (4) von einer Gabel eines Schieberknopfes übergriffen wird.8. Control device according to claim 1 or 6,
characterized in that the slider element (4) is overlapped by a fork of a slider button. 9. Steuervorrichtung nach Anspruch 8,
dadurch gekennzeichnet, daß der Schieberknopf eine lang­gestreckte Form hat, so daß er einen zugehörigen Führungs­schlitz in einem Staubsaugergehäuse in jeder Stellung überdeckt.9. Control device according to claim 8,
characterized in that the slider button has an elongated shape so that it covers an associated guide slot in a vacuum cleaner housing in any position. 10. Steuervorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß im Bereich des Ansatzes (6) des Führungsbandes (3) ein Abschnitt (7) der Scheibe (1) weggeschnitten ist.10. Control device according to claim 1,
characterized in that in the area of the shoulder (6) of the guide belt (3) a section (7) of the disc (1) is cut away. 11. Steuervorrichtung nach Anspruch 10,
dadurch gekennzeichnet, daß der weggeschnittene Abschnitt (7) Teil eines Kreissegmentes ist, dessen eine Schnitt­linie vom Ansatz (6) des Führungsbandes (3) in Richtung des Radius der Scheibe (1) verläuft.11. Control device according to claim 10,
characterized in that the cut-away section (7) is part of a segment of a circle, a section line of which extends from the shoulder (6) of the guide band (3) in the direction of the radius of the disc (1). 12. Steuervorrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß die Scheibe (1), ihre Steuer­achse (2) und das Führungsband (3) einstückig aus einem Kunststoff hergestellt sind.12. Control device according to one of claims 1 to 11,
characterized in that the disc (1), its control axis (2) and the guide band (3) are made in one piece from a plastic.
EP87113559A 1986-09-19 1987-09-16 Control apparatus Expired - Lifetime EP0261580B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87113559T ATE72744T1 (en) 1986-09-19 1987-09-16 CONTROL DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863631976 DE3631976A1 (en) 1986-09-19 1986-09-19 CONTROL DEVICE
DE3631976 1986-09-19

Publications (3)

Publication Number Publication Date
EP0261580A2 true EP0261580A2 (en) 1988-03-30
EP0261580A3 EP0261580A3 (en) 1989-08-30
EP0261580B1 EP0261580B1 (en) 1992-02-26

Family

ID=6309969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113559A Expired - Lifetime EP0261580B1 (en) 1986-09-19 1987-09-16 Control apparatus

Country Status (3)

Country Link
EP (1) EP0261580B1 (en)
AT (1) ATE72744T1 (en)
DE (2) DE3631976A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098149A1 (en) * 2008-03-03 2009-09-09 Miele &amp; Cie. KG Vacuum cleaner with a rotation potentiometer and a knob

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031647A1 (en) * 1970-06-26 1971-12-30 Licentia Gmbh Cylinder vacuum cleaner with a multi-stage switch
US3800266A (en) * 1973-03-05 1974-03-26 Teac Corp Variable resistor with linearly movable means for changing the resistance thereof
US4027541A (en) * 1974-05-14 1977-06-07 Matsushita Electric Industrial Co., Ltd. Electronic component having a fine adjustment mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031647A1 (en) * 1970-06-26 1971-12-30 Licentia Gmbh Cylinder vacuum cleaner with a multi-stage switch
US3800266A (en) * 1973-03-05 1974-03-26 Teac Corp Variable resistor with linearly movable means for changing the resistance thereof
US4027541A (en) * 1974-05-14 1977-06-07 Matsushita Electric Industrial Co., Ltd. Electronic component having a fine adjustment mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098149A1 (en) * 2008-03-03 2009-09-09 Miele &amp; Cie. KG Vacuum cleaner with a rotation potentiometer and a knob

Also Published As

Publication number Publication date
DE3631976A1 (en) 1988-03-31
EP0261580A3 (en) 1989-08-30
EP0261580B1 (en) 1992-02-26
ATE72744T1 (en) 1992-03-15
DE3776849D1 (en) 1992-04-02

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