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EP1404204B1 - Vacuum cleaner with rollers - Google Patents

Vacuum cleaner with rollers Download PDF

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Publication number
EP1404204B1
EP1404204B1 EP02754725A EP02754725A EP1404204B1 EP 1404204 B1 EP1404204 B1 EP 1404204B1 EP 02754725 A EP02754725 A EP 02754725A EP 02754725 A EP02754725 A EP 02754725A EP 1404204 B1 EP1404204 B1 EP 1404204B1
Authority
EP
European Patent Office
Prior art keywords
wall
hub
roller
vacuum cleaner
running
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.)
Expired - Lifetime
Application number
EP02754725A
Other languages
German (de)
French (fr)
Other versions
EP1404204A1 (en
Inventor
Erich Bott
Roland Illig
Heinrich Komesker
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1404204A1 publication Critical patent/EP1404204A1/en
Application granted granted Critical
Publication of EP1404204B1 publication Critical patent/EP1404204B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles

Definitions

  • the invention relates to a equipped with rollers vacuum cleaner.
  • a vacuum cleaner which has rollers.
  • the rollers have ribs which, starting from a hub of the rotor, are connected to an outer race and give the roller the required stability.
  • US-A-4 530 543 discloses a caster-equipped vacuum cleaner in which the casters have a wall having a curved section between a race and a hub.
  • the rollers have a simple structure and can therefore be produced inexpensively.
  • the wall has an S or a Z-shaped structure in cross section. This form achieves a high degree of elasticity with low material consumption.
  • reinforcing ribs are provided, which are arranged on at least one of the two end faces of the wall.
  • the reinforcing ribs each depart from the wall in their curved area.
  • the reinforcing ribs give the wall a higher stability.
  • the ribs are not connected to the hub or to the race.
  • the ribs directed inwardly from the curved portion of the wall to the hub in another embodiment, extend from the hub and face the curved portion of the wall. Also in this case, the ribs are not connected to the curved wall, so as not to reduce the elasticity.
  • the race on its tread has a convex contour. Also by this measure, the elasticity of the rollers is supported.
  • the roller can be inexpensively made of polypropylene (PP) or one of its co-polymers.
  • the race of the roller on a surface of soft elastic material is molded onto the raceway.
  • This tread can be injected inexpensively in two-component injection molding process to the race.
  • thermoplastic elastomers (TPE) and rubber-based materials may be used as suitable plastic materials.
  • a vacuum cleaner has rollers.
  • the rollers are constructed as a roller 1 (Fig. 1).
  • the roller 1 has a hub 2, via which it is slidably mounted on a shaft connected to the housing of the vacuum cleaner axis or mounted via ball or roller bearings.
  • the roller is made of a plastic, in particular a hard plastic such as polypropylene, but it can also consist of a more elastic plastic.
  • the hub 2 has the axis towards its front a circular projection 21 and on its back a likewise circular projection 22nd
  • a wall 3 connects, which connects the hub 2 with a raceway 4.
  • the wall 3 has a first region 30 which extends in the radial direction from the hub 2 on the front side to near the middle of the radius of the roller 1. This is followed by a second region 31, which extends from the front side obliquely to the rear side of the roller 1.
  • the slope of the region 31 can be chosen differently.
  • the region 31 can also extend coplanar with one of the two lateral surfaces of the hub 2 or coplanar with one of the two lateral surfaces of the raceway 4.
  • the region 31 is followed by a region 32 (FIG. 2) which extends in the radial direction from the region 31 on the rear side of the roller 1 to the race 4.
  • the wall 3 connects through its three areas 30, 31 and 32, the hub with the raceway 4th
  • ribs 5, 6 are present.
  • the ribs 5 extend from the region 31 of the wall 3 in the direction of the inner circumferential surface of the race 4, but do not touch it. Only in the case of heavy weight loading, the ribs 5 can touch the lateral surface.
  • the ribs 6 extend from the region 32 of the wall 3 in the direction of the outer circumferential surface of the hub 2. Also, the ribs 6 do not touch the lateral surface of the hub 2, but can come in case of heavy weight load on this.
  • ribs may also be arranged on the outer surface of the hub 2 and project towards the area 31 of the wall 3 without touching it, except in the case of heavy weight loading.
  • the roller preferably has a crowned tread 41.
  • the curved shape of the wall 3 is either Z-shaped (see Fig. 3, 4) or S-shaped. Other curved shapes are conceivable. In particular, a double-S-shape or a double-Z-shape is possible.
  • the invention provides an elastic roller 1 with a hub 2 and a race 4 is created.
  • the hub 2 and the race 4 are connected by an S- or Z-shaped curved wall 3 with each other.
  • To reinforce the wall 3 or the hub 2 ribs 5, 6 are provided.
  • the race 4 has a surface of soft elastic material (FIG. 5).
  • a soft elastic tread 41 made of a suitable plastic material is formed directly on the raceway 4.
  • the soft-elastic running surface 41 can be produced in a two-component injection molding process together with the roller 1.
  • the race 4 is provided on its surface with a circumferential recess 51, in which the soft elastic material is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Tires In General (AREA)

Abstract

A vacuum cleaner includes a housing and at least one running roller operatively connected to the housing. The roller has a hub, a running ring, a wall connecting the running ring and the hub. The wall has two side surfaces and a curved cross-section between the running ring and the hub. The roller has at least one reinforcing rib extending at least from one of the two side surfaces of the wall and being in contact with neither the hub nor the running ring in a non-loaded state of the running roller. The roller forms an elastic caster with a nave and a bearing race. The nave and the bearing race are connected to another by an S or Z-shaped curved wall. Ribs are provided for reinforcing the wall or the nave.

Description

Die Erfindung bezieht sich auf einen mit Laufrollen ausgestatteten Staubsauger.The invention relates to a equipped with rollers vacuum cleaner.

Aus der US 4 934 017 ist ein Staubsauger bekannt, der Laufrollen hat. Die Laufrollen weisen Rippen auf, die von einer Nabe des Laufrades ausgehend, mit einer äußeren Lauffläche verbunden sind und der Laufrolle die erforderliche Stabilität verleihen.From US 4,934,017 a vacuum cleaner is known which has rollers. The rollers have ribs which, starting from a hub of the rotor, are connected to an outer race and give the roller the required stability.

US-A-4 530 543 offenbart einen mit Laufrollen ausgestatteten Staubsauger, bei dem die Laufrollen eine zwischen einem Laufring und einer Nabe einen geschwungenen Querschnitt aufweisende Wand haben.US-A-4 530 543 discloses a caster-equipped vacuum cleaner in which the casters have a wall having a curved section between a race and a hub.

Es ist die Aufgabe der Erfindung, bei einem Staubsauger der eingangs genannten Art die Laufeigenschaften des Staubsaugers weiter zu verbessern.It is the object of the invention to further improve the running characteristics of the vacuum cleaner in a vacuum cleaner of the type mentioned.

Diese Aufgabe wird bei einem erfindungsgemäßen Staubsauger durch die Merkmale der unabhängigen Ansprüchen gelöst.This object is achieved in a vacuum cleaner according to the invention by the features of the independent claims.

Die Laufrollen haben einen einfachen Aufbau und lassen sich daher kostengünstig herstellen.The rollers have a simple structure and can therefore be produced inexpensively.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous developments emerge from the subclaims.

Besonders vorteilhaft ist eine Ausführungsform des Staubsaugers, bei der die Wand eine S- oder eine Z-förmige Struktur im Querschnitt aufweist. Durch diese Form wird bei geringem Materialverbrauch ein hohes Maß an Elastizität erzielt.Particularly advantageous is an embodiment of the vacuum cleaner, wherein the wall has an S or a Z-shaped structure in cross section. This form achieves a high degree of elasticity with low material consumption.

Erfindungsgemäß sind Verstärkungsrippen vorgesehen, die auf wenigstens einer der beiden Stirnflächen der Wand angeordnet sind. Dabei gehen die Verstärkungsrippen jeweils von der Wand in ihrem geschwungenen Bereich aus. Durch die Verstärkungsrippen erhält die Wand eine höhere Stabilität.According to the invention reinforcing ribs are provided, which are arranged on at least one of the two end faces of the wall. The reinforcing ribs each depart from the wall in their curved area. The reinforcing ribs give the wall a higher stability.

Um die Elastizität aber nicht zu reduzieren, sind die Rippen nicht mit der Nabe oder mit dem Laufring verbunden.However, in order not to reduce the elasticity, the ribs are not connected to the hub or to the race.

Alternativ zu den von dem geschwungenen Bereich der Wand nach innen zu der Nabe gerichteten Rippen gehen diese in einer anderen Ausführungsform von der Nabe aus und sind gegen den geschwungenen Bereich der Wand gerichtet. Auch in diesem Fall sind die Rippen nicht mit der geschwungenen Wand verbunden, um die Elastizität nicht zu verrringern.Alternatively, the ribs directed inwardly from the curved portion of the wall to the hub, in another embodiment, extend from the hub and face the curved portion of the wall. Also in this case, the ribs are not connected to the curved wall, so as not to reduce the elasticity.

In einer anderen Weiterbildung der Erfindung hat der Laufring auf seiner Lauffläche eine ballige Kontur. Auch durch diese Maßnahme wird die Elastizität der Laufrollen unterstützt.In another embodiment of the invention, the race on its tread has a convex contour. Also by this measure, the elasticity of the rollers is supported.

Bei der Erfindung wird auch bei Einsatz eines harten Materials eine hohe Elastizität erreicht. So kann die Laufrolle beispielsweise kostengünstig aus Polypropylen (PP) oder einer seiner Co-polymere hergestellt sein.In the invention, a high elasticity is achieved even when using a hard material. For example, the roller can be inexpensively made of polypropylene (PP) or one of its co-polymers.

In einer vorteilhaften Variante weist der Laufring der Laufrolle eine Oberfläche aus weichelastischem Material auf. Dadurch wird eine zusätzliche Dämpfung erzielt und es kann auch eine verbesserte Rutschfestigkeit der Laufrolle auf glatten Böden erreicht werden. Vorzugsweise ist eine Lauffläche aus weichelastischem Kunststoffmaterial an den Laufring angespritzt. Diese Lauffläche kann kostengünstig im Zweikomponenten-Spritzgussverfahren an den Laufring angespritzt ist. Als geeignete Kunststoffmaterialien können insbesondere thermoplastische Elastomere (TPE) und Materialien auf Kautschukbasis verwendet werden.In an advantageous variant, the race of the roller on a surface of soft elastic material. As a result, an additional damping is achieved and it can also be an improved skid resistance of the roller can be achieved on smooth floors. Preferably, a tread of soft elastic plastic material is molded onto the raceway. This tread can be injected inexpensively in two-component injection molding process to the race. In particular, thermoplastic elastomers (TPE) and rubber-based materials may be used as suitable plastic materials.

Nachstehend wird die Erfindung in einem Ausführungsbeispiel anhand der Zeichnungen näher erläutert. Diese zeigen:

Fig. 1, 2
eine Laufrolle für einen Staubsauger in perspektivischen Ansichten von der Vorderseite und der Rückseite,
Fig. 3
die Laufrolle in einer Schnittansicht A-A gemäß Fig. 4 und
Fig. 4
die Laufrolle in der Draufsicht auf die Rückseite,
Fig. 5
eine Laufrolle mit einer Lauffläche aus weichelastischem Material.
The invention will be explained in more detail in an embodiment with reference to the drawings. These show:
Fig. 1, 2
a roller for a vacuum cleaner in perspective views of the front and the back,
Fig. 3
the roller in a sectional view AA of FIG. 4 and
Fig. 4
the roller in the top view on the back,
Fig. 5
a roller with a tread of soft elastic material.

Ein Staubsauger weist Laufrollen auf. Die Laufrollen sind aufgebaut wie eine Laufrolle 1 (Fig. 1). Die Laufrolle 1 weist eine Nabe 2 auf, über die sie auf einer mit dem Gehäuse des Staubsaugers verbundenen Achse gleitend oder über Kugel- oder Wälzlager gelagert verbunden ist. Die Laufrolle besteht aus einem Kunststoff, insbesondere einem harten Kunststoff wie Polypropylen, sie kann jedoch auch aus einem stärker elastischen Kunststoff bestehen. Die Nabe 2 hat zur Achse hin auf ihrer Vorderseite einen kreisförmigen Vorsprung 21 und auf ihrer Rückseite einen ebenfalls kreisförmigen Vorsprung 22.A vacuum cleaner has rollers. The rollers are constructed as a roller 1 (Fig. 1). The roller 1 has a hub 2, via which it is slidably mounted on a shaft connected to the housing of the vacuum cleaner axis or mounted via ball or roller bearings. The roller is made of a plastic, in particular a hard plastic such as polypropylene, but it can also consist of a more elastic plastic. The hub 2 has the axis towards its front a circular projection 21 and on its back a likewise circular projection 22nd

An die Nabe 2 schließt sich eine Wand 3 an, die die Nabe 2 mit einem Laufring 4 verbindet. Die Wand 3 weist einen ersten Bereich 30 auf, der sich in radialer Richtung von der Nabe 2 auf der Vorderseite bis nahe an die Mitte des Radius der Laufrolle 1 erstreckt. Daran schließt sich ein zweiter Bereich 31 an, der sich von der Vorderseite schräg zu der Rückseite der Laufrolle 1 erstreckt. Die Schräge des Bereichs 31 lässt sich unterschiedlich wählen. Der Bereich 31 kann auch koplanar zu einer der beiden Mantelflächen der Nabe 2 oder koplanar zu einer der beiden Mantelflächen des Laufrings 4 verlaufen.To the hub 2, a wall 3 connects, which connects the hub 2 with a raceway 4. The wall 3 has a first region 30 which extends in the radial direction from the hub 2 on the front side to near the middle of the radius of the roller 1. This is followed by a second region 31, which extends from the front side obliquely to the rear side of the roller 1. The slope of the region 31 can be chosen differently. The region 31 can also extend coplanar with one of the two lateral surfaces of the hub 2 or coplanar with one of the two lateral surfaces of the raceway 4.

An den Bereich 31 schließt sich ein Bereich 32 (Fig. 2), der sich in radialer Richtung von dem Bereich 31 auf der Rückseite der Laufrolle 1 bis zu dem Laufring 4 erstreckt. Somit verbindet die Wand 3 durch ihre drei Bereiche 30, 31 und 32 die Nabe mit dem Laufring 4.The region 31 is followed by a region 32 (FIG. 2) which extends in the radial direction from the region 31 on the rear side of the roller 1 to the race 4. Thus, the wall 3 connects through its three areas 30, 31 and 32, the hub with the raceway 4th

Zur Unterstützung der Stabilität der Laufrolle 1 sind Rippen 5, 6 vorhanden. Die Rippen 5 erstrecken sich von dem Bereich 31 der Wand 3 in Richtung zur inneren Mantelfläche des Laufrings 4, berühren diesen jedoch nicht. Einzig im Fall starker Gewichtsbelastung können die Rippen 5 die Mantelfläche berühren.To support the stability of the roller 1 ribs 5, 6 are present. The ribs 5 extend from the region 31 of the wall 3 in the direction of the inner circumferential surface of the race 4, but do not touch it. Only in the case of heavy weight loading, the ribs 5 can touch the lateral surface.

Die Rippen 6 erstrecken sich von dem Bereich 32 der Wand 3 in Richtung zur äußeren Mantelfläche der Nabe 2. Auch die Rippen 6 berühren die Mantelfläche der Nabe 2 nicht, können jedoch im Falle starker Gewichtsbelastung an diese stoßen.The ribs 6 extend from the region 32 of the wall 3 in the direction of the outer circumferential surface of the hub 2. Also, the ribs 6 do not touch the lateral surface of the hub 2, but can come in case of heavy weight load on this.

Alternativ zu dieser Anordnung der Rippen 6 können Rippen auch auf der äußeren Mantelfläche der Nabe 2 angeordnet sein und in Richtung zu dem Bereich 31 der Wand 3 ragen, ohne diese zu berühren, außer im Fall starker Gewichtsbelastung.Alternatively to this arrangement of the ribs 6, ribs may also be arranged on the outer surface of the hub 2 and project towards the area 31 of the wall 3 without touching it, except in the case of heavy weight loading.

Die Laufrolle hat vorzugsweise eine ballige Lauffläche 41.The roller preferably has a crowned tread 41.

Die geschwungene Form der Wand 3 ist entweder Z-förmig (vgl. Fig. 3, 4) oder S-förmig. Auch andere geschwungene Formen sind denkbar. Insbesondere ist auch eine Doppel-S-Form oder eine Doppel-Z-Form möglich.The curved shape of the wall 3 is either Z-shaped (see Fig. 3, 4) or S-shaped. Other curved shapes are conceivable. In particular, a double-S-shape or a double-Z-shape is possible.

Durch die Erfindung wird eine elastische Laufrolle 1 mit einer Nabe 2 und einem Laufring 4 geschaffen. Die Nabe 2 und der Laufring 4 sind durch eine S- oder Z-förmig geschwungene Wand 3 mit einander verbunden. Zur Verstärkung der Wand 3 oder der Nabe 2 sind Rippen 5, 6 vorgesehen.The invention provides an elastic roller 1 with a hub 2 and a race 4 is created. The hub 2 and the race 4 are connected by an S- or Z-shaped curved wall 3 with each other. To reinforce the wall 3 or the hub 2 ribs 5, 6 are provided.

Der Laufring 4 weist eine Oberfläche aus weichelastischem Material auf (Fig. 5). Eine weichelastische Lauffläche 41 aus einem geeigneten Kunststoffmaterial ist direkt an den Laufring 4 angeformt. In einfacher Weise kann die weichelastische Lauffläche 41 im Zweikomponenten-Spritzgußverfahren zusammen mit der Laufrolle 1 hergestellt sein. Der Laufring 4 ist an seiner Oberfläche mit einer umlaufenden Vertiefung 51 versehen, in die das weichelastische Material angeformt ist.The race 4 has a surface of soft elastic material (FIG. 5). A soft elastic tread 41 made of a suitable plastic material is formed directly on the raceway 4. In a simple manner, the soft-elastic running surface 41 can be produced in a two-component injection molding process together with the roller 1. The race 4 is provided on its surface with a circumferential recess 51, in which the soft elastic material is formed.

Claims (4)

  1. Vacuum cleaner with running roller (1) having reinforcing ribs (5, 6) and a wall (3), which has a curved cross-section between a running ring (4) and a hub (2), characterised in that the reinforcing ribs (5, 6) go out from at least one of the two side surfaces of the wall (3) and contact neither the hub (2) nor the running ring (4) in the unloaded state of the running roller (1).
  2. Vacuum cleaner according to the introductory part of claim 1, characterised in that the reinforcing ribs (5, 6) go out from the hub (2) in direction towards the wall (3), but do not contact this in the unloaded state of the running roller (1).
  3. Vacuum cleaner according to claim 1 or 2, characterised in that the wall (3) has an S-shaped or Z-shaped cross-section.
  4. Vacuum cleaner according to one of claims 1 to 3, characterised in that the running ring (4) has a spherical running surface (41).
EP02754725A 2001-06-29 2002-06-20 Vacuum cleaner with rollers Expired - Lifetime EP1404204B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10131696A DE10131696B4 (en) 2001-06-29 2001-06-29 vacuum cleaner
DE10131696 2001-06-29
PCT/EP2002/006852 WO2003001957A1 (en) 2001-06-29 2002-06-20 Vacuum cleaner

Publications (2)

Publication Number Publication Date
EP1404204A1 EP1404204A1 (en) 2004-04-07
EP1404204B1 true EP1404204B1 (en) 2006-06-07

Family

ID=7690111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754725A Expired - Lifetime EP1404204B1 (en) 2001-06-29 2002-06-20 Vacuum cleaner with rollers

Country Status (10)

Country Link
US (1) US7096902B2 (en)
EP (1) EP1404204B1 (en)
CN (1) CN100379376C (en)
AT (1) ATE328522T1 (en)
DE (2) DE10131696B4 (en)
HU (1) HU227504B1 (en)
MX (1) MXPA03011830A (en)
PL (1) PL202514B1 (en)
RU (1) RU2269283C2 (en)
WO (1) WO2003001957A1 (en)

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Also Published As

Publication number Publication date
US7096902B2 (en) 2006-08-29
CN1522123A (en) 2004-08-18
DE10131696B4 (en) 2006-11-23
EP1404204A1 (en) 2004-04-07
WO2003001957A1 (en) 2003-01-09
HU227504B1 (en) 2011-07-28
HUP0400864A2 (en) 2004-07-28
CN100379376C (en) 2008-04-09
DE50207117D1 (en) 2006-07-20
RU2003137580A (en) 2005-03-27
US20040140708A1 (en) 2004-07-22
RU2269283C2 (en) 2006-02-10
MXPA03011830A (en) 2004-03-26
PL202514B1 (en) 2009-07-31
DE10131696A1 (en) 2003-01-16
ATE328522T1 (en) 2006-06-15
PL364493A1 (en) 2004-12-13

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