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
  • A47L9/02—Nozzles
  • A47L9/04—Nozzles with driven brushes or agitators
• • 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

Definitions

• the invention relates to a floor nozzle for a vacuum cleaner with a suction chamber delimited in the direction of advance by first limiting means, for example by skids at the front and rear, a rotatable brush possibly being arranged within the suction chamber.
• the limiting means for example arranged in the form of skids on the front and rear of the suction chamber, come into effect in particular when machining carpets, the floor nozzle being supported on the pile via the skids and these providing an approximately sealing closure for the suction chamber.
• a high negative pressure builds up in the suction space, which leads to an increase in the pushing forces due to increased friction.
• the first limiting means which is at the front in the normal direction of rotation, is fixed over part of the width of the suction space and movable over part of the width like a slide.
• a floor nozzle is created which, due to the slide-like configuration of a movable section of the front first limiting means, with respect to that in the suction chamber prevailing negative pressure is adjustable.
• This front first limiting means is preferably a skid. The slide-like movable part of this skid can open a coarse material opening in the front area of the floor nozzle, through which on the one hand secondary air can flow in for negative pressure regulation and thus for regulating the air pressure.
• the formation of a slide-like movable part of the front limiting means not only reveals a secondary air opening for regulating the vacuum in the suction space, but also, due to the fact that the limiting means is preferably the front skid, the possibility of improved coarse material pick-up, since non-moving ones Skids block the bulk goods from access to the suction area.
• the movable part of the limiting means is arranged centrally between two fixed parts of the limiting means. It is also provided that the width of the movable, slide-like limiting means corresponds to 0.25 to 0.5, preferably one third, of the floor nozzle width.
• the movable part of the limiting means is arranged in the center facing the end face of the floor nozzle, which further proves to be advantageous in that users generally tend to approach coarser dirt in the center.
• the limited width of the movable part of the limiting means preferably of the order of about one third of the total floor nozzle width, prevents loose and / or dense carpet or carpet sections from being sucked into and arched into the opening.
• This upstream second limiting means is more preferably lip-shaped and consists, for example, of an elastically resilient material, for example in the form of a sealing lip.
• This second limiting means also extends transversely to the usual feed direction of the floor nozzle.
• the second limiting means such as a sealing lip, can only be provided in the area assigned to the movable part of the first limiting means.
• the second delimitation means extends over the entire width of the floor nozzle and is thus probably upstream of the movable part and also of the fixed part of the first delimitation means.
• the second limiting means be supported on the movable part of the first limiting means in the lowered state. This support is also preferably carried out in the area of assignment to the fixed parts of the first limiting means.
• the cross-section and the elasticity of the second limiting means for example a sealing lip, is designed at least in the region of the movable part of the first limiting means such that it only allows a low air throughput when supported by the first limiting means on so-called standard carpets. As a result, the suction chamber is almost completely sealed. The increases
• the movable part of the first limiting means is advantageously designed to support the second limiting means with a backrest.
• the latter has a smaller extension in the direction of the subsurface, ie the floor to be maintained, than the first limiting means, for example the sliding skid. Accordingly, the support back is selected so that it does not come into contact with the floor to be maintained.
• An intermediate space is further preferably formed between the first and the second limiting means.
• the second limiting means is in any case slotted in the area of the movable part of the first limiting means to form tab-like partial areas .
• this section of the second limiting means assigned to the movable part of the first limiting means can also be in the form of a bristle strip.
• a central, fixed section of the first limiting means can be provided, which is preferably wedge-shaped in plan, with a wedge tip pointing in the direction of advance.
• the central, fixed region of the first limiting means is shaped like a snow shovel.
• this fixed section of the first limiting means which is also referred to as a supporting crenel
• this coarse material becomes on the left or the right past in the suction space, supported by forward stroke and the air flow derived.
• this fixed, central section of the first limiting means With the help of this fixed, central section of the first limiting means, the free span of the carpet is also approximately halved in the total area of the secondary air or coarse material openings released by the moving parts of the first limiting means.
• the carpet or carpet section is held down by the central fixed section so that it cannot be sucked into the suction chamber.
• the openings opened by the moving parts of the first limiting means remain open even on denser carpets.
• the user can move the movable part of the first limiting means via an adjusting slide, the latter preferably being arranged on the upper outer surface of the floor nozzle.
• the user can react to an increase in the pushing force, for example by foot-operated slide displacement, by means of which the movable part of the first limiting means is raised or lowered more or less.
• This enables the user to minimize the negative pressure in the suction chamber and, if necessary, to continue working at a maximum power level of the vacuum cleaner without negatively influencing the cleaning performance, for example the fiber absorption.
• the movable Part of the first limiting means is guided on an arc section, with the arc center preferably lying on the axis of rotation of the brush arranged in the suction space and driven by an electric motor.
• FIG. 1 is a perspective individual illustration of a floor nozzle according to the invention.
• FIG. 2 shows the schematic section along the line 11-11 in FIG. 1, relating to a lowered position of a part of a first limiting means that can be moved in the manner of a slide;
• FIG. 3 shows a representation corresponding to FIG. 2, but the position of the movable limiting means after the same has been shifted;
• FIG. 4 shows a detail view in a bottom view of the floor nozzle, relating to a second embodiment
• FIG. 6 shows a perspective detailed illustration of the second embodiment, relating to the lowered position of the movable part; 7 shows a perspective detail representation corresponding to FIG. 6, but showing the raised position of the movable limiting means.
• FIGS. 1 to 3 Shown and described is first with reference to FIGS. 1 to 3, a first embodiment of a floor nozzle 1 according to the invention for a vacuum cleaner, not shown.
• the floor nozzle 1 is designed as an attachment, which can be connected to the vacuum cleaner both electrically and in terms of flow via a connecting piece 2.
• the connecting piece 2 is in fluidic connection with a - viewed in the feed direction r - front suction chamber 3, which extends transversely to the feed direction r in the floor nozzle 1 and downwards, d. H. forms a slit-like suction mouth 5 facing the floor 4 to be maintained.
• the suction chamber 3 there is also an electric motor-driven, rotatable brush 6, which likewise extends across the entire width of the suction chamber transversely to the feed direction r.
• the bristles of the brush 6 protrude on the underside beyond the device base 7 through the suction mouth 5 for brushing the base 4.
• the suction chamber 3 or the suction mouth 5, viewed in the feed direction r, is delimited forward and backward by first limiting means 8 which also run transversely to the feed direction r. These are designed in the form of sliding runners 9, which, with their rounded edge edges that delimit the suction mouth 5, contact the floor 4 to be processed.
• the skids 9 have a circular cross-section and are arranged concentrically to the brush axis x, the skids 9 projecting downward beyond the base 7 of the device further delimiting the interior of the device while maintaining the shape of the circular section.
• the relevant suction chamber wall sections are provided with the reference number 10.
• a second limiting means 11 in the form of a sealing lip 12 is arranged at a distance from the front skid 9 in the feed direction r, the latter consisting of an elastically resilient material such as a rubber material.
• a sealing lip 12 or such a second limiting means 11 is also provided, viewed in the feed direction r, behind the rear skid 9. Both sealing lips 12 are fastened to the device housing 13 or in the area of the device base 7 and, like the first delimitation means 8, extend over the entire width of the floor nozzle 1.
• the second delimitation means 11 viewed in cross-section, extend perpendicular to the floor to be maintained 4 pointing, wherein, for example, a free edge edge of each sealing lip 12, which is pointed in cross-section, sits slightly on the floor 4 to be cleaned or runs at a small distance from it.
• the arrangement of the two second limiting means 11 means that the suction space 3 formed between them is almost delimited in order to build up a negative pressure required for suction processing.
• a central section, viewed across the width of the floor nozzle 1, of the first limiting means 8 at the front in the feed direction r is designed as a slide-like movable part 14, which is guided on a circular arc section running concentrically to the brush axis x.
• the length of this movable part 14 measured in the width direction of the floor nozzle 1 corresponds to approximately one third of the floor nozzle width.
• the movable part 14 is positioned centrally between two fixed parts 15 of the first limiting means 8.
• the movable part 14 of the first limiting means 8 On the side facing away from the suction space, the movable part 14 of the first limiting means 8 also has a molded-on support back 16. In the lowered position of the movable part 14 of the first limiting means 8, this serves, as shown in FIG. 2, for the rear support of the assigned front second limiting means 11 or sealing lip 12, for which purpose the latter has a bead 17 contacting the support back 16 in the assigned section.
• the second delimitation means 11 or the sealing lip 12 is slit across the width of the movable part 14 of the first delimitation means 8 to form tab-like partial areas.
• the movable part 14 of the first limiting means 8 is connected via a lever linkage 18 to an adjusting slide 19 arranged on the upper outer surface 18 of the floor nozzle 1. Via the latter, the movable part 14 of the first limiting means 8 can be shifted manually by the user from a vertically lowest position as shown in FIG. 2 to an upper position.
• the movable part 14 of the first limiting means (8) is designed as a useful air slide and at the same time forms the skid 9 in this area.
• a part, namely the support back 16 of this slide supports the front sealing lip 12 inwards.
• the cross-section and material of the latter is selected at least in the area of the movable part 14 in such a way that too much air does not get into the suction space 3 with the aid of the support back 16 on so-called standard carpets. If, as shown in FIG. 3, the slide or If the movable part 14 of the first limiting means 8 moves upwards on a circular path, the associated sealing lip 12 lacks the inward support effect.
• the pushing force can be regulated by influencing the vacuum, by means of which the movable part 14 of the first limiting means 8 is more or less raised or lowered.
• FIG. 5 to 7 show a second embodiment of the floor nozzle 1 according to the invention, which differs from the previously described embodiment in that two movable parts 14 of the first limiting means 8 are formed over the width of the floor nozzle 1, each of which is between two fixed ones Parts 15 of the first limiting means 8 are arranged.
• a central, fixed section 20 of the first limiting means 8 is provided, which is wedge-shaped in plan with a wedge tip 21 pointing in the feed direction r.
• This central fixed part 20 of the first limiting means 8 is connected to the two outer fixed parts via a bridge 22 15 connected.
• This arrangement results in two sections at the front of the floor nozzle 1 in the region of the front first limiting means 8, which sections can be used as useful air openings.
• the latter releasing movable parts 14 of the first limiting means 8 are connected to one another above the skid configuration and can be displaced together via the lever linkage 25 and the adjusting slide 19 in accordance with the first exemplary embodiment.
• the shape of the central fixed part 20 of the first limiting means 8 is similar to a snow shovel. If coarse material arrives with the coarse material slide open, d. H. raised movable limiting means 14 against the wedge tip 21 of the central part 20, the coarse material is diverted left and right past the fixed part 20 into the suction chamber 3, supported by the forward stroke and air flow.
• the central fixed part 20 By arranging the central fixed part 20, the free span of the carpet to be processed in the useful air opening area, ie. H. in the area to be released by lifting the movable parts 14 approximately halved, so that suctioning in, in particular, of denser carpet sections into the suction mouth 5 is counteracted.
• the central fixed part 20 therefore acts as a hold-down.

Landscapes

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

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34801455

Family Applications (1)

Country Status (7)

Families Citing this family (10)

Citations (6)

Family Cites Families (4)

• 2004
  • 2004-02-03 DE DE102004005144A patent/DE102004005144A1/de not_active Withdrawn
• 2005
  • 2005-02-01 WO PCT/EP2005/050419 patent/WO2005082220A1/de active Application Filing
  • 2005-02-01 JP JP2006551847A patent/JP2007520293A/ja active Pending
  • 2005-02-01 CN CN2005800060980A patent/CN1921791B/zh active Active
  • 2005-02-01 RU RU2006131593/12A patent/RU2006131593A/ru not_active Application Discontinuation
  • 2005-02-01 EP EP05750455A patent/EP1711096B1/de active Active
  • 2005-02-01 DE DE502005009822T patent/DE502005009822D1/de active Active
  • 2005-02-01 AT AT05750455T patent/ATE472285T1/de active

Patent Citations (6)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events