EP0268067A1 - Aspirateur de poussière avec dispositif indiquant le changement de filtre - Google Patents

Aspirateur de poussière avec dispositif indiquant le changement de filtre Download PDF

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Publication number
EP0268067A1
EP0268067A1 EP87114871A EP87114871A EP0268067A1 EP 0268067 A1 EP0268067 A1 EP 0268067A1 EP 87114871 A EP87114871 A EP 87114871A EP 87114871 A EP87114871 A EP 87114871A EP 0268067 A1 EP0268067 A1 EP 0268067A1
Authority
EP
European Patent Office
Prior art keywords
display element
vacuum cleaner
spring
bellows
display
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.)
Withdrawn
Application number
EP87114871A
Other languages
German (de)
English (en)
Inventor
Vladimir Sykora
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0268067A1 publication Critical patent/EP0268067A1/fr
Withdrawn legal-status Critical Current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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/19—Means for monitoring filtering operation

Definitions

  • the invention relates to a vacuum cleaner with a device indicating the filter change, which has a pivotably arranged display element which is actuated by means of a bellows acted upon by the pressure of the air flow flowing through the vacuum cleaner and is coupled to a spring which is fixed to the housing and which causes the resetting of the display device .
  • Such a vacuum cleaner is known from US-PS 2 114 105.
  • the display element is arranged on a rotatably mounted axis and has a small, protruding lever arm at its supported end, which is articulated to one end of a bellows.
  • a helical spring arranged on the axis brings the display element back to its initial position. Due to the pressure prevailing in the dust chamber of the vacuum cleaner, the bellows is compressed and, as a result, the display element coupled to it is pivoted, so that the need for a filter change can be noticed from its position.
  • the display device consists of a large number of individual parts which have to be combined to form a functional device.
  • the invention has for its object to construct the device for displaying the filter change in a vacuum cleaner of the aforementioned type so that it is easy to assemble and consists of only a few parts.
  • the display element is plate-shaped and with its side opposite the display side in a housing-fixed groove and is pivotable in the direction of expansion of the bellows, and that the spring is connected at its other end to the display element is that the display element is pressed into the groove by the spring force.
  • the display element only needs to be inserted with the corresponding side into the groove and is therefore already rotatably mounted, the mounting in the groove being effected by the spring.
  • a separate installation of the spring is not necessary if it is already integrally formed on the display element.
  • the spring can advantageously consist of a tongue punched on the display element.
  • a soft spring characteristic is achieved in that the tongue is bent in a semicircular loop with respect to the plane of the display element.
  • the device consists of a separate component which can be inserted into the vacuum cleaner housing and which is designed as a circular sector-shaped frame, the groove for the cutting edge bearing of the display element being provided on one radial leg in such a way that the display element is at a distance from the other radial arm extends approximately parallel to this, that in the space between the display element and the other radial arm of the bellows is arranged, which is supported at one end on the other radial arm and is connected at its other end to the display element that further on the one radial leg is provided with a latch to the other radial leg, provided with latching grooves, as an abutment for the spring tongue punched on the display element.
  • a display device 2 is installed for displaying the necessary filter change.
  • the housing part of the display device 2 consists of a circular sector-shaped frame 3.
  • a groove 5 is provided for the sheath-shaped mounting of a plate-shaped display element 6.
  • a tongue 7 is stamped on the display element 6 and is bent in a semicircular loop 8 with respect to the plane of the display element 6. With its free end 9, the tongue 7 is supported in locking grooves 10 of a tab 12 formed on one radial leg 4 and pointing towards the other radial leg 11.
  • the tongue 8 gives the tongue a soft spring characteristic.
  • the loop 8 can also have a shape other than a semicircle, for example a shape approximating an ellipse.
  • the display element 6 is mounted so that it is approximately parallel to the other radial leg 11 in the rest position. Between this radial leg 12 and the display element 6, an expandable bellows 13 is arranged by the pressure prevailing in the dust chamber of the vacuum cleaner housing 1. The interior of the bellows 13 is connected via a hose 14 to the dust chamber located behind the blower unit in terms of flow.
  • the display device can also be installed in the vacuum cleaner so that it in the Vacuum cleaner is exposed to negative pressure. In this case, the hose 14 is led outside to the ambient air.
  • the principle of the display device 2 is reversible.
  • the bellows 13 can also exert a tensile force on the display element 6 instead of a compressive force. In this case, the direction of the force exerted by the spring (tongue 7) is also reversed.
  • the bellows 13 is stretched by the pressure prevailing in the dust chamber and thereby pivots the display element 6 counterclockwise.
  • a display lug 16 formed on the display element 6 thereby passes under a viewing window 17 which is provided in the arc 18 connecting the two radial legs 4 and 11.
  • the viewing window 17 is arranged in a corresponding opening 19 of the vacuum cleaner housing 1, so that the position of the display tab 16 can be seen from the outside.
  • the tongue 7 is, as shown in FIG 3, punched on the plate of the display element 6, in which 7 slots 20 are punched out of the plate on both sides of the tongue. As a result, two bearing arms 21 are formed at the same time, which are inserted into the groove 5 with their free end 22.
  • the tongue 7 is designed by the semicircular loop 8 so that it not only exerts a pivoting force on the display element, but also a force acting in the direction of the plane of the display element 6. By this force acting in the plane of the display element 6, the latter is pressed into the groove 5 and held in it without the need for additional holding means.
  • the spring force of the tongue 7 can be changed by appropriate adjustment of its free end 9 on the tab 12.
  • a small bore 23 is provided in the plate of the display element 6, into which a pin 24 connected to the bellows 13 is inserted.
  • the display device described consists of only three parts, namely the circular sector-shaped frame 3, the display element 6 and the bellows 13. These parts can be assembled in a simple manner and without special tools.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP87114871A 1986-10-25 1987-10-12 Aspirateur de poussière avec dispositif indiquant le changement de filtre Withdrawn EP0268067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19868628480 DE8628480U1 (de) 1986-10-25 1986-10-25 Staubsauger mit einer den Filterwechsel anzeigenden Vorrichtung
DE8628480U 1986-10-25

Publications (1)

Publication Number Publication Date
EP0268067A1 true EP0268067A1 (fr) 1988-05-25

Family

ID=6799575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114871A Withdrawn EP0268067A1 (fr) 1986-10-25 1987-10-12 Aspirateur de poussière avec dispositif indiquant le changement de filtre

Country Status (2)

Country Link
EP (1) EP0268067A1 (fr)
DE (1) DE8628480U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD626708S1 (en) 2008-03-11 2010-11-02 Royal Appliance Mfg. Co. Hand vacuum
US8069529B2 (en) 2008-10-22 2011-12-06 Techtronic Floor Care Technology Limited Handheld vacuum cleaner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725114A (en) * 1954-01-14 1955-11-29 Hoover Co Control device for suction cleaners
DE2124761A1 (de) * 1970-09-01 1972-03-02 Suhl Elektrogeraete Veb K Vorrichtung zur Anzeige des Füllungsgrades eines Staubsaugerfilters
FR2385371A1 (fr) * 1977-03-30 1978-10-27 Electrolux Ab Dispositif indicateur pour aspirateur de poussiere

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725114A (en) * 1954-01-14 1955-11-29 Hoover Co Control device for suction cleaners
DE2124761A1 (de) * 1970-09-01 1972-03-02 Suhl Elektrogeraete Veb K Vorrichtung zur Anzeige des Füllungsgrades eines Staubsaugerfilters
FR2385371A1 (fr) * 1977-03-30 1978-10-27 Electrolux Ab Dispositif indicateur pour aspirateur de poussiere

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD626708S1 (en) 2008-03-11 2010-11-02 Royal Appliance Mfg. Co. Hand vacuum
US8069529B2 (en) 2008-10-22 2011-12-06 Techtronic Floor Care Technology Limited Handheld vacuum cleaner

Also Published As

Publication number Publication date
DE8628480U1 (de) 1988-02-18

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB NL SE

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Effective date: 19880923

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18D Application deemed to be withdrawn

Effective date: 19900502

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SYKORA, VLADIMIR