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
  • A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
• • 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
  • A47L9/02—Nozzles
  • A47L9/04—Nozzles with driven brushes or agitators
  • A47L9/0494—Height adjustment of dust-loosening tools
• • 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
  • A47L9/02—Nozzles
  • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
• • 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
  • A47L9/02—Nozzles
  • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
  • A47L9/0666—Nozzles with fixed, e.g. adjustably fixed brushes or the like with tilting, floating or similarly arranged brushes, combs, lips or pads

Definitions

• the invention relates to a floor nozzle for a vacuum cleaner with a suction space delimited in the feed direction by limiting means, for example by sliding skids at the front and rear, a rotatable brush possibly being arranged within the suction space.
• the raising or lowering limiting means are preferably designed in the manner of an approximately vertically displaceable slide, the width of such a useful air slide or also coarse dirt or purging air slide being chosen to be smaller than the total width of the floor nozzle, so that the movable limiting means on both sides carpet to be processed is still held down by adjacent, non-movable limiting means such as a floor panel or skids.
• a width of 50 to 200 mm of the movable part of the limiting means or of the slide is conceivable.
• the latter can be used to regulate the amount of air flowing into the suction chamber, so that it is completely closed, the lower edge of the slide or the limiting means being flush with the floor to be cleaned, up to a desired maximum opening, which is determined by the desired cleaning performance or by the geometric conditions is limited.
• the lower edge of the slide or of the vertically movable limiting means is preferably designed as a sealing lip or as a type of skid.
• the opening that occurs when the limiting means is raised can also be designed as a coarse material receptacle. To optimize dust pick-up from cracks, this large opening is closed by the limiting means, the latter also consisting of bristle strip segments or sealing tips.
• the limiting means are prestressed in the lowering direction.
• a rocker-type button is arranged in the suction nozzle, which is operated by a underground section drawn in, particularly sucked-in carpet section, is deflected and that the deflection of the button controls a raising of the limiting means.
• the negative pressure in the suction space can increase in such a way that the carpet or the carpet section that approximately seals the suction space downward is strongly sucked in, so that the carpet pile penetrates deeply into the suction space.
• the rocker-type button is acted upon and deflected, which causes the limiting means to regulate the negative pressure in the suction space to be raised.
• the vacuum in the suction chamber is regulated in favor of a lower pushing force.
• a deflection response threshold of the button can be set.
• a vacuum threshold value can be set, from which the limiting means for regulating the vacuum are only raised.
• the push button can advantageously be provided by a brush which is arranged in the suction chamber and can be displaced in a rocker-like manner. The latter can be shifted in a rocker-like manner around a tilting axis which is aligned outside the suction chamber and parallel to the brush rotation axis, which tilting axis can also be the rotation axis of the electric motor driving the brush, for example via a toothed belt. If a section of carpet is drawn into the suction chamber during suction processing, the brush is raised above it.
• the brush which also serves as a button, causes the limiting means to be regulated to regulate the negative pressure in the suction chamber after a response threshold has been exceeded.
• the negative pressure acting in the suction space itself can also be converted into a lifting force for the limiting means. In this way, the negative pressure acting in the suction space can be measured continuously. If a predetermined threshold is exceeded, the limiting means are opened.
• the vertical displacement of the limiting means is proportional to the measured vacuum or proportional to the deflection path of the button. It can also be provided that the negative pressure acts on a vacuum piston which is fixedly connected to an action part of an action means acting on the limiting means.
• the opening in the forward stroke for coarse material pickup is automatically released via the rocker-like button provided in the suction nozzle, ie the vertically movable limiting means is raised, while in the return stroke the curtain formed by the vertically movable limiting means is closed automatically.
• the relevant button is designed like a lever, with a lever section of the button facing away from the ground, ie the floor to be sucked, controls the movement of the limiting means.
• the distinction between the forward movement and the return movement can also be made by detecting the direction of rotation of any rollers or other co-rotating components.
• the above-mentioned action means acting on the limiting means can be a lever linkage or also a Bo wdenzug, with the latter being further suggested that the connection of the Bowdenzug due to the lever portion of the button in one position is more to a fixed bearing of the limiting means than in the other position ,
• the lever-like button which interacts with the base and can be switched in alternation with the forward movement and return movement of the suction nozzle
• the axis of rotation thereof to compensate for an overlap barrel deflection against spring force is vertically movable.
• the movable limiting means can additionally be raised by a slide acting on the acting means.
• the user is able to permanently open the useful air opening to be released by lifting the vertically movable limiting means, or in an intermediate position, so that, for example, it is also better to pick up coarse material. If, despite user control, the vacuum in the suction chamber becomes too high, the means described above (deflectable button in the suction chamber or vacuum-dependent control) take effect to further open the useful air opening.
• FIG. 1 shows a floor nozzle according to the invention for a vacuum cleaner in a perspective view
• FIG. 2 shows the schematic section along the line II-II in FIG. 1, relating to a first embodiment of the invention
• FIG. 3 shows a representation corresponding to FIG. 2, but with the carpet section drawn in and the resultant lifting of vertically movable limiting means;
• FIG. 4 shows a further illustration corresponding to FIG. 2, but relating to a second embodiment
• FIG. 5 shows a further sectional view according to FIG. 2, relating to a third embodiment with the limiter raised. agent in the course of a forward movement of the suction nozzle;
• FIG. 8 shows a representation corresponding to FIG. 5, but with the limiting means lowered in the course of a return movement of the suction nozzle.
• a floor nozzle 1 for a vacuum cleaner (not shown) is first shown and described with reference to the illustration in FIG. 1.
• This floor nozzle 1 is designed in the form of an attachment which can be assigned to the vacuum cleaner both electrically and in terms of flow technology.
• the floor nozzle 1 has, in the usual way, a suction chamber 2 which extends transversely to the usual direction of movement r and which is assigned to the end region of the floor nozzle 1 and is designed to cover almost the entire width thereof.
• the suction chamber 2 opens towards the floor 3 to be cleaned in a suction mouth 4.
• the suction chamber 2 or the suction mouth 4 is assigned a limiting means 5, which extends parallel and parallel to the suction chamber 2, in the usual direction of movement r, for example in the form of a bristle strip or a sealing lip.
• These limiting means 5 limit the suction space 2 in the longitudinal extent thereof.
• the suction space 2 is delimited on both sides at the front by wall sections on the housing side.
• a rotatingly drivable brush 6 is arranged in the suction chamber 2 for brushing the floor 3 to be cleaned, the brush axis being oriented transversely to the usual direction of travel r.
• the brush 6 is arranged in such a way that its bristles 7 protrude downward over the device base 8 during normal tillage.
• a partial region 5 'of the limiting means 5 assigned to the end face of the floor nozzle 1 is designed to be vertically movable, a window 10 being provided in the assigned end wall 9 of the floor nozzle 1 to accommodate the width of the movable section 5' of the limiting means 5.
• the width of the movable delimitation means 5 'measured transversely to the usual direction of travel r and consequently also the corresponding width of the window 10 corresponds in the example shown to approximately two thirds of the total floor nozzle width, so that the movable delimitation means 5' are fixed on both sides, i. H. not vertically movable limiting means 5 are arranged.
• the movable limiting means 5 ' has a cantilever 11 aligned transversely to the direction of displacement, on which another tension spring 12 attached to the housing of the floor nozzle 1 engages. The latter loads the movable limiting means 5 'in the lowering direction, i. H. in the contact position with the soil to be worked 3.
• an adjusting screw 13 aligned in the direction of movement of the limiting means 5 ' is gripped, by means of which a deflection response threshold can be set or the brush wear is taken into account.
• the brush 6 arranged in the suction space 2 can be shifted like a rocker.
• a rocker arm 14 acts on the brush 6 in the region of its axis, which can be pivoted outside the suction chamber 2 about a tilt axis x running parallel to the brush axis.
• This pivot axis x can coincide with the motor axis of rotation of the electric motor 15 driving the brush 6, for example via a belt drive.
• An embodiment is also conceivable in which, as shown, the electric motor 15 can be tilted together with the rocker arm 14 about the axis x.
• the arrangement is further selected so that the brush 6 with its bristles 7 is always in contact with the floor 3 to be worked, loaded with its own weight.
• the brush 6 can react to uneven floors, for example, via the rocker arrangement.
• a button 16 is formed, for example, in the extension of the rocker arm 14, which is arranged in a rotationally fixed manner relative to the rocker arm 14.
• the movable limiting means 5 ' can be raised automatically as a function of the negative pressure prevailing in the suction space.
• the negative pressure in the suction chamber 2 rises due to the sealing via the limiting means 5 in such a way that the carpet section 17 located in the suction mouth is strongly sucked in, which in turn causes the rocker-like brush 6 and, consequently, also to be lifted According to seesaw arm 14.
• the rocker-like button 16 acts on the adjusting screw 13, which leads to a vertical displacement of the movable limiting means 5 'via the latter and the bracket 11 (cf. FIG. 3).
• the housing-side window 10 is opened like a gap, the gap height being dependent on the negative pressure prevailing in the suction space 2 and the associated suction height of the carpet section 17.
• Incoming air flows in, which has a decrease in the vacuum in the suction chamber 2 in favor of a lower pushing force.
• the inflowing air takes dust from the carpet 3 or dirt lying on the carpet 3 with it.
• the secondary air is not sucked in unused, but is used to clean the carpet.
• the user can also permanently open the useful air opening to be released via the movable limiting means 5 'to a desired extent.
• a slide 18 is provided on the upper side of the device, which acts on an action means 19 for the vertical displacement of the movable limiting means 5 '.
• this action means 19 is a lever linkage 20 which can be acted upon by the slide 18 on one end and on the other at the upper free end of the movable limiting means 5 'attacks.
• the movable limiting means 5 ' is displaced via the lever linkage 20' against the force of the tension spring 12 and independently of the negative pressure prevailing in the suction chamber 2 or independently of a height shift of the brush 6 into a desired position.
• the negative pressure acting in the suction space 2 can also be converted directly into a lifting force for the limiting means 5 ′ as shown in FIG. 4.
• the vacuum on the suction chamber side acts on a vacuum piston 21 which, opposite to the loading side, is fixedly connected to an action part 22 acting on the action means 19 mentioned or on the lever linkage 20.
• This fin action part 22 can be an articulated lever which acts on the lever arm of the lever linkage 20, which lever arm also interacts with the slide 18.
• the size of the useful air opening to be released is not controlled via a brush rocker, that is to say via the degree of carpet suction, but rather directly via the negative pressure in the suction space 2.
• the lever linkage 20 is pivotally displaced via the negative pressure piston 21, that the movable limiting means 5 'is raised against the force of the tension spring 12. In this system too, there is the possibility of keeping the useful air opening permanently in an open position via the slide 18.
• FIG. 5 to 8 show a third embodiment, in which case the movable limiting means 5 'can be raised automatically as a function of a forward and return movement of the floor nozzle.
• a movable section 5 'of the front limiting means 5 in the usual suction direction r can be raised, in order to open a useful air opening 23.
• This movable limiting means 5' is also spring-biased into a lowered position, ie into a ground contact position, here by means of a compression spring 24.
• the movable limiting means 5 ' is connected via an action means 19 designed as a Bowden cable 25 to a rocker-like button 26, the latter contacts the floor to be worked and is switched over in alternation to the forward movement r and return movement r' of the floor nozzle 1.
• the button 26 always contacting the floor to be cleaned is preferably formed in the form of a sealing element.
• the button 26 can be pivoted about an axis y oriented transversely to the direction of movement of the floor nozzle 1, which is formed on a vertically movable, laterally guided lever section 27.
• the latter is preloaded via a compression spring 28 into a basic position directed towards the housing base 8.
• One end of the core of the Bowden cable 25 is fastened to the lever section 27.
• the button 26 automatically flips over to a dead center position, with both swivel end positions of the button 26 being limited by the stop.
• the button 26 assumes a more inclined position during a forward movement in the direction of the arrow r (see FIG. 5) than in the pivoted position during a return movement according to the arrow r '(see FIG. 8).
• the vertical position of the lever section 27 is also different in the two directions of movement. 5, the movable limiting means 5 'is raised via the lever section 27, which remains in a lowermost position, and via the Bowden cable 25, in order to release the useful air opening 23.
• the limiting means are raised and lowered in a very simple manner as a function of the running movement of the floor nozzle 1.
• the direction of rotation of any rollers or other components of the floor nozzle 1 which are also rotating can be used to distinguish between the forward and return stroke.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Nozzles For Electric Vacuum Cleaners (AREA)
• Jet Pumps And Other Pumps (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34801813

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (31)

Family Cites Families (10)

• 2004
  • 2004-02-10 DE DE102004006350A patent/DE102004006350A1/de not_active Withdrawn
• 2005
  • 2005-02-04 AT AT05726335T patent/ATE427062T1/de not_active IP Right Cessation
  • 2005-02-04 WO PCT/EP2005/050483 patent/WO2005074779A1/fr active Application Filing
  • 2005-02-04 DE DE502005006992T patent/DE502005006992D1/de not_active Expired - Fee Related
  • 2005-02-04 JP JP2006552598A patent/JP2007521897A/ja active Pending
  • 2005-02-04 EP EP05726335A patent/EP1713370B1/fr not_active Not-in-force
  • 2005-02-04 RU RU2006132333/12A patent/RU2006132333A/ru not_active Application Discontinuation
  • 2005-02-04 CN CNA2005800044954A patent/CN1956673A/zh active Pending

Non-Patent Citations (1)

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