DK150325B

DK150325B - VACUUM BRUSH

Info

Publication number: DK150325B
Application number: DK457380A
Authority: DK
Inventors: Lennart Sivert Axel Lindqvist
Original assignee: Electrolux Ab
Priority date: 1979-11-26
Filing date: 1980-10-29
Publication date: 1987-02-09
Also published as: FR2469899B1; SE438090B; DE3044351C2; SE7909737L; AU535087B2; DK457380A; JPS5685322A; GB2063657A; CA1145904A; DE3044351A1; JPH0120895B2; AU6416880A; DK150325C; GB2063657B; FR2469899A1; NL8006133A

Description

1 1503251 150325

Den foreliggende opfindelse angår et suganundstykke, der ved hjælp af en sugeledning kan tilsluttes en støvsuger, og har to i forhold til hinanden bevægelige arbejdsorganer, f.eks. et børstanundstykke og et planmundstykke, der skiftevis kan bringes i kontakt med en arbejdsflade ved hjælp af et påvirkningsorgan ved dettes forskydning mellem to slutstillinger.The present invention relates to a suction nozzle which can be connected to a vacuum cleaner by means of a suction line, and has two movable working members, e.g. a brush nozzle and a flat nozzle which can be alternately contacted with a work surface by means of an actuating means in its displacement between two end positions.

Et sugemundstykke af den i indledningen angivne art kendes fra SE patentskrift nr. 334.714, ifølge hvilket luft slip-· 5 pes ind gennem en åbning i rørskaftet i al den tid, hvor ..et af arbejdsorganerne er i kontakt med underlaget. Denne indførsel af ekstra luft medfører, at sugeevnen gennem mundstykket formindskes i tilsvarende grad.A suction nozzle of the kind specified in the preamble is known from SE patent specification No. 334,714, according to which air is released through an opening in the pipe shaft during all the time when one of the working members is in contact with the substrate. This introduction of extra air causes the suction through the nozzle to be reduced to a corresponding degree.

Det er den foreliggende opfindelses formål at forenkle betjeningen af med to i forhold til hinanden forskydelige arbejdsorganer forsynet sugemundstykke, -uden at medføre en konstant reduktion af sugeevnen.SUMMARY OF THE INVENTION It is an object of the present invention to simplify the operation of two suction nozzles fitted with two displaceable working members, in addition to a constant reduction in suction capacity.

15 Dette fonnål tilgodeses ved, at det indledningsvist omtalte sugemundstykke ifølge opfindelsen er ejendommeligt ved det i den kendetegnende del af krav 1 anførte. Ved hjælp af denne udformning frembringes en kortvarig trykændring i sugerøret, der medfører arbejdsorganernes omskiftning. De to arbejdsorganers indstilling bibeholdes siden på mekanisk måde, uden at nogen lækageluft behøver at blive indført i sugerøret.This needle is addressed in that the suction nozzle according to the invention mentioned above is peculiar to that of the characterizing part of claim 1. By means of this design, a short-term pressure change is produced in the suction pipe, which causes the change of the working organs. The setting of the two working members is then maintained mechanically, without any leakage air having to be introduced into the suction pipe.

Det i den kendetegnende del af krav 2 anførte er en enkelt 25 og driftssikker udføringsform, ved hvis hjælp den nævnte omskiftning kan foretages. .The characterizing part of claim 2 is a single and reliable embodiment by means of which said switching can be made. .

Den i den kendtegnende del af krav 3 anførte udformning medfører, at ventilen kan manøvreres mekanisk direkte ved suge-30 rørets manøvrehåndtag.The configuration of the characterizing part of claim 3 means that the valve can be operated mechanically directly by the maneuvering handle of the suction pipe.

Det i den kendtegnende del af krav 4 anførte letter håndteringen ved, at man altid ser hvilket mundstykke, der er indkoblet.The characterizing part of claim 4 facilitates handling by always seeing which nozzle is engaged.

Et udførelseseksempel for sugemundstykket ifølge opfindelsen beskrives nedenfor under henvisning til tegningen, hvori' 35 2 150325 0 der vises et skematisk billede i snit af sugemundstykket ifølge opfindelsen. På tegningen viser fig. 1 børstemundstykket i udfældet stilling på arbejdsfla-5 den, og fig. 2 planmundstykket i berøring med underlaget.An embodiment of the suction nozzle according to the invention is described below with reference to the drawing, in which a schematic sectional view of the suction nozzle according to the invention is shown. In the drawing, FIG. 1 shows the brush nozzle in the folded-out position on the work surface; and FIG. 2 the nozzle in contact with the base.

Det på tegningen viste sugemundstykke omfatter en kappe 10, 10 et planmundstykke 11 og et børstemundstykke 12. I planmundstykkets centrale del er der anbragt vægge, der med deres øvre kanter ligger an mod kappen. Væggene 13 danner en sugeåbning 14, som styrer luft 'fra mundstykkets sugeåbning 15 til dets tilslutningsrør 16, der forbinder mundstykket via 15 en sugeledning med en ikke vist støvsuger. Børstemundstykket 12 er forskydeligt mod kraften af en fjeder 18 mellem en nedre stilling, arbejdsstillingen,og ved fjederkaft løftbart til en øvre stilling, hvilestillingen.The suction nozzle shown in the drawing comprises a casing 10, 10 a flat nozzle 11 and a brush nozzle 12. Walls are arranged in the central part of the flat nozzle, which with their upper edges abut against the casing. The walls 13 form a suction opening 14 which directs air from the suction opening 15 of the nozzle to its connection pipe 16, which connects the nozzle via a suction line with a vacuum cleaner not shown. The brush nozzle 12 is displaceable against the force of a spring 18 between a lower position, the working position, and, by spring shaft, liftable to an upper position, the resting position.

20 I sugelednxngen 17, henholdsvis i dens ikke viste manøvre- skaft, ved hjælp af hvilket sugemundstykket kan føres på ar- bejiflsfladen, er der anbragt en ventil 19, ved hjælp af hvilken ventil sugeledningens gennemstrømningsareal kan tilsluttes således som vist i fig. 1. Mellem mundstykkekappen 10 og 25 tilslutningsrøret 16 er der anbragt et hus, i hvilket der svingbart er lejret en klap 21 ved hjælp af et cylindrisk nav 22. Til navets periferi er en palarm 23 fastgjort med sin ene ende. Den anden frie ende løber på et trinhjul 24, der i sin periferi har fire udadrettede fremspring 25. Des-30 uden er der på trinhjulet 24 udformet to diametralt beliggende kamflader 26. En fjeder 27 holder klappen 21 i den i fig. 1 viste stilling, i hvilken stilling klappen lukker sugeåbningen 14.20 In the suction pipe 17, respectively, in its actuator not shown, by means of which the suction nozzle can be guided to the working surface, a valve 19 is provided, by means of which the flow area of the suction pipe can be connected as shown in FIG. 1. Between the nozzle cap 10 and 25 the connecting pipe 16 is arranged a housing in which a flap 21 is pivotally mounted by means of a cylindrical hub 22. At the periphery of the hub a pawl arm 23 is secured with one end thereof. The other free end runs on a stepper wheel 24 which has four outwardly projecting projections 25 on its periphery. In addition, there are two diametrically located cam faces 26 formed on the steering wheel 24. A spring 27 holds the flap 21 in the FIG. 1 in which position the flap closes the suction opening 14.

35 S ugemundstykket fungerer på følgende måde. Når der ikke strømmer nogen luft gennem sugemundingen,. befinder ventilen 19 og klappen 21 sig i den i fig. 1 viste stilling. Klappen påvirkes af en fjeder 27 til lukket· stilling. Når ventilen35 The weekly mouthpiece works as follows. When no air flows through the suction nozzle. the valve 19 and the flap 21 are in the position shown in FIG. 1. The flap is actuated by a spring 27 to the closed position. When the valve

Claims

150325 and 3 19 are in the position shown in FIG. 2, the flap 21 is rotated due to the negative pressure produced in the suction line against the spring force of the FIG. 2. The pawl bar 23 is pushed against one of the projections 25 of the stepper wheel 24, and the steering wheel 5 is rotated 90 ° in a counterclockwise direction with its cam surface. The cam faces 26 occupy the one shown in FIG. 2 and the spring 28 lifts the brush nozzle to the rest position. Thus, a work cycle consists of a closure and an opening of the valve 19. If the motor blower assembly of the vacuum cleaner is stopped, the casing 21 returns to the one shown in FIG. 1 and carries with it the bar rod 23 which snaps into the adjacent projection. The valve 19 is conveniently located in the upper shaft of the suction line and can be manually actuated against the action of a spring not shown, so that in its final position it closes the flow area of the suction line 17. The nozzle itself may have a means for visually indicating the working members 11, 12. position relative to the work surface. An advantage of the suction nozzle according to the invention is that the switching of the nozzle's working members can be done manually from the maneuvering shaft without cumbersome power transfer devices in the form of wire, hoses, etc. Furthermore, the maneuvering force is substantially less than for a directly maneuvered switching mechanism. Claims. 30

A suction nozzle which can be connected to a vacuum cleaner by means of a suction line (17) and has two displaceable working members relative to each other, e.g. a brush nozzle (12) and a flat nozzle (11>) which can be alternately displaced for contact with a work surface by means of an actuator at its displacement between two end positions, characterized in that the flow area of the suction line (17) can be closed or exposed, respectively. by means of a valve (19) arranged in the suction pipe and a