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
  • A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles

Definitions

• the invention first relates to a furniture or equipment roller with an axis and an impeller rotatably received on the axis, the axis having an extension direction.
• Track rollers of the type in question are known and are used, for example, in movable pieces of furniture, for example roll containers or the like, and moreover also in movable devices, in particular in the case of vacuum cleaners in the area of the floor nozzle and / or in the area of the tillage of the rollable vacuum cleaner floor unit to be pulled behind by the user during the processing.
• the impeller is arranged to be movable on the axis in the direction of extension of the axis in such a way that the impeller is correspondingly more than one on the axis half the width of the impeller can move in the direction of extension of the axis.
• a role is created in a structurally simple manner, which facilitates steering movements by the user.
• the impeller can be moved along the direction of extension of the axis, so that steering forces acting on the roller are converted into an axial displacement of the impeller.
• the dimension of the axial displacement Availability essential, which corresponds to at least half a width - the thickness measured in the axial direction - of the impeller.
• a displacement path of the impeller on both sides is preferably provided in the amount of a multiple of the impeller width, so further for example in the amount of one to five times.
• a plurality of impellers which are arranged next to one another can also be rotatably accommodated on the axle and move accordingly along the axle accommodating them under the action of a steering command.
• the axis is curved in its direction of extension, more preferably curved in a circular arc, which further supports the steering properties of the roller designed in this way and the associated change in the frictional resistance to the ground.
• the curvature is thus preferably directed counter to a normal running direction of the roller, so that the impeller received on the axis automatically automatically assumes a central position on the curved axis in a linear movement, from which it migrates laterally along the axis due to acting steering forces.
• the impeller is spring-biased in a preferred position on the axle.
• This preferred position can also be any other position on the axle, so that the roller can also have a deflected preferred position.
• the impeller can move from the preferred position to both sides in the direction of extension of the axis by at least half a width of the impeller.
• the impeller also sits directly on the axle with a hub section.
• the arrangement can also be chosen so that supports the impeller on the axle via a ball or roller bearing.
• a curved axis When a curved axis is configured, it extends over an angular range of 20 to 180 °, preferably over an angular range of approximately 90 °, so that the impeller seated on the axis extends from a preferably central preferred position by approximately 45 ° to both sides can migrate along the direction of extension of the axis.
• the free length of the axle is more preferably more than twice the width of the impeller, and this free length further corresponds to up to 20 times the width of the impeller. For example, a free length on the order of about six times the wheel width is preferred.
• the invention further relates to a furniture or appliance part with a roller, comprising an impeller rotatably received on an axis, the axis having an extension direction.
• the impeller be arranged to be movable on the axis in the direction of extension of the axis such that the impeller is on the axis by a corresponding amount of more than half a width of the impeller can move in the direction of extension of the axis.
• the impeller moves along the axis in accordance with the acting steering forces, so that, in cooperation with the point of force acting on the furniture or appliance part, the same is automatically steered.
• the arrangement of a plurality of impellers arranged next to one another on the axis is also conceivable.
• the furniture or appliance part in the direction of travel, and so on in a preferred direction of travel first has a fixed roller and then a roller with an impeller that is displaceable on the axis.
• the selected arrangement can be provided in a floor nozzle of a conventional household vacuum cleaner, in which the floor nozzle processing the floor is displaced via the handle, the user preferably pushing the floor nozzle in front of him over the handle.
• the solution according to the invention is used in that in particular the front section of the floor nozzle in the preferred direction, that is to say in the direction of thrust, is provided with a steering roller according to the invention, that is to say with an impeller displaceable on an axis.
• two fixed castors are spaced apart from one another in the axial direction and two casters with displaceable impellers are spaced apart from one another in a corresponding manner, the fixed castors and the casters being spaced apart overall in the direction of travel.
• a four-point support for the furniture or appliance part is created, consisting of two fixed castors and two swivel castors, the latter - as already mentioned - preferably arranged in a preferred direction of travel in the front area of the furniture or appliance part and the force or Steering force is exerted on the part in the area of the fixed castors, more preferably between the two fixed castors arranged at a distance from one another.
• a configuration has proven to be particularly advantageous in which the impeller which is displaceable on the axis can be displaced on an axis which is curved in its direction of extension, as a result of which a preferred position of the impeller on the axis is automatically set, which preferential position also by spring preloading on both sides. tion of the impeller on the axis can be found automatically.
• the curvature of the axis be carried out against the direction of travel, preferably against the usual direction of travel.
• a common direction of travel for example in the case of vacuum cleaners, is the feed direction in which the user pushes the vacuum cleaner together with the floor nozzle in front of it.
• FIG. 1 shows a device part according to the invention in the form of a hand-held vacuum cleaner, which is provided with a device according to the invention having attachment rollers according to the invention;
• Figure 2 is a bottom view of the attachment with device rollers in a first embodiment.
• FIG. 3 shows the enlargement of the area HI in FIG. 2;
• FIG. 4 shows a representation corresponding to FIG. 3, but relating to a second embodiment
• FIG. 5 shows a further bottom view of the attachment with device rollers in a third embodiment
• Figure 6 shows the section along the line VI - VI in Fig. 5.
• FIG. 7 shows the enlargement of the area VLT in FIG. 5, partially in section; 8 shows a sectional view through the area of the device castors in a plan view of this area, relating to the displacement of the track rollers during a left-hand steering movement of the device;
• FIG. 9 shows a representation corresponding to FIG. 8, but with a right-hand steering movement
• FIG. 10 shows a bottom view corresponding to FIG. 5, but relating to a further embodiment of the device castors according to the invention
• FIG. 11 shows a further bottom view of the attachment with an alternative arrangement of the device rollers according to the embodiment in FIG. 5.
• FIG. 1 Shown and described is first with reference to FIG. 1, a household vacuum cleaner 1 with a guide handle 2 and an attachment 4 forming a device part 3 and connected to the vacuum cleaner 1 in terms of flow technology and electricity.
• the attachment 4 or device part 3 is designed as a floor nozzle and, in the usual form, has a suction channel 5 oriented transversely to the usual direction of travel r, in which tilling brushes 6 which can be driven by an electric motor are arranged.
• the device part 3 according to the invention is supported on the surface to be maintained via four rollers, two fixed castors 7 being provided in a rear region in the direction of travel r and assigned to the connection region to the vacuum cleaner 1, which are arranged at a distance from one another in the axial direction are. These fixed castors 7 are therefore positioned directly in the area of action of the guide handle 2.
• two further rollers are arranged near the end area of the device part 3, which act as device rollers 8 are designed in the form of castors. These are also spaced from one another transversely to the direction of travel.
• the arrangement of these device rollers 8 can be selected such that they are positioned on the side of the suction channel 5 facing away from the fixed rollers 7.
• an arrangement of the device rollers 8 as shown in FIG. 11 is also conceivable, in which they are positioned in the usual direction of travel r in front of the suction channel 5, ie with reference to the fixed rollers 7 on this side of the suction channel 5.
• the design of the device castors 8, which are designed as castors, can differ according to the illustrations.
• each roller 8 having an impeller 10 which is rotatably mounted on a straight axis 9 which is oriented parallel to the fixed roller axis and therefore transversely to the usual direction of travel r.
• the impeller 10 passes through the device base 7 in the region of an impeller window 12 which is aligned with the orientation of the axis 9 and which is dimensioned in its width measured in the axial direction in such a way that the impeller 10 is axially movable on the axis 9.
• a window width is thus provided which enables the impeller 10 to move in the direction of extension of the axis 9 by the amount of approximately four times the width b of the impeller 10.
• the impeller 10 can alternatively also be spring-biased on the axis 9 in a preferred position.
• compression springs 13 are provided on both sides of the impeller 10, which are supported on one end on the impeller 10 and on the other end on the device housing. As a result, the impeller 10 is biased into a central preferred position as shown in FIG. 4.
• the impeller 10 moves correspondingly against the spring force of the one compression spring 13 along the axis 9 and supports the rotation of the device 4 on the ground.
• the slip between the impeller 10 and the ground is reduced to a minimum, which results in a reduction in the steering forces for the user.
• FIG. 5 to 9 An alternative embodiment is shown in Figures 5 to 9.
• the wheels 10 of the device rollers 8 are rotatably received on an arcuate curved axis 9, the curvature of the axis 9 being carried out in the opposite direction of travel r.
• the impeller window 12 penetrated by the impeller 10 in the device base 11 is correspondingly adapted to the curvature and to the extent of the axis 9, the curved axis 9 also extending over an angular range ⁇ of approximately 90 °.
• the axis 9 is caught on both sides in the axis receptacles 14 on the device housing side.
• the free length of the axis 9 for the free movement of the impeller 10 corresponds in the illustrated embodiment to approximately seven times the impeller width b.
• a central preferred position of the impeller 10 is set as shown in FIG. 5, from which preferred position the impeller 10 moves when it is turned in.
• the wheels 10 In a straight forward stroke in the direction of travel r, the wheels 10 tend to roll in the preferred Mittelpo position. If steering is now turned to the left (see FIG. 8), the wheels 10 move on their axes 9 to the right and, under the constraint of the axes 9, automatically pivot in the desired direction of travel. The impellers 10 have accordingly moved to the right on the respective axis 9 and thus describe a circular path on which the device part 3 will travel. In the case of a steering movement to the right (see FIG. 9), the situation is reflected accordingly.
• each impeller 10 is seated directly on the axle 9 with a hub section 15.
• a ball or roller bearing in the area of the hub section 15.
• each impeller 10 is adapted to accommodate the axis 9 to the radius of curvature.
• the bore diameter 16 also increases as a function of the width b of the impeller 10.
• the radius of curvature of the curved axis 9 is also essential. With a smaller radius of curvature - with a certain steering angle on the vacuum cleaner 1 - the radius of the curve which is driven by the steered device rollers 8 becomes smaller.
• the compression springs 13 are dimensioned such that they can be compressed by the movement of the impellers 10 during normal steering movements in the forward stroke, that is to say in the usual direction of travel r.
• FIG. 11 shows a further alternative embodiment with device rollers 8 according to the embodiment in FIGS. 5 to 9, but here the arrangement is selected such that they are arranged in front of the suction channel 5 in the usual direction of travel r.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Electric Suction Cleaners (AREA)
• Support Devices For Sliding Doors (AREA)
• Nozzles For Electric Vacuum Cleaners (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34801557

Family Applications (1)

Country Status (6)

Families Citing this family (14)

Family Cites Families (3)

• 2004
  • 2004-02-04 DE DE200410005461 patent/DE102004005461A1/de not_active Withdrawn
• 2005
  • 2005-02-02 EP EP05750691A patent/EP1711095A1/de not_active Withdrawn
  • 2005-02-02 CN CNA2005800040366A patent/CN1929770A/zh active Pending
  • 2005-02-02 WO PCT/EP2005/050442 patent/WO2005079649A1/de not_active Application Discontinuation
  • 2005-02-02 JP JP2006551848A patent/JP2007520294A/ja not_active Withdrawn
  • 2005-02-02 RU RU2006131588/12A patent/RU2006131588A/ru not_active Application Discontinuation

Non-Patent Citations (1)

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