DE1728142C3

DE1728142C3 - Chassis for a household appliance with a sliding shoe on its underside, such as a vacuum cleaner, a floor polishing machine or the like

Info

Publication number: DE1728142C3
Application number: DE1728142A
Authority: DE
Inventors: Karl Gustav Sollentuna Grellsson (Schweden)
Original assignee: Electrolux AB
Current assignee: Electrolux AB
Priority date: 1967-09-18
Filing date: 1968-08-30
Publication date: 1974-03-28
Also published as: DK137919C; NL155449B; JPS502541B1; SE382910B; FR1585683A; DE1728142A1; GB1184136A; SE371929B; DK137919B; US3614804A; DE1728142B2; NL6813331A

Description

3 43 4

löst, daß der geräteseilige Laufring des in an sich be- den durch eine Deckplatte 8 zusammengehalten, dekannter Weise mit einem größeren Durchmesser als ren umgebogener Rand den Laufring 6 des Kugelladas Laufrad ausgebildeten und die Achse des Lauf- gcrs? übergreift. Stiftförmige Ansätze 9 an der rades wenigstens angenähert in der Wälzebene ent- Platte 4 durchdringen Löcher in der Deckplatte 8 haltenden Wälzlagers von dem radial nach einwärts 5 und halten diese in ihrer Lage mit Hilfe von Sicheumgebogenen oberen Rand einer eine kreisförmige rungsscheiben 10 fest.solves that the device-rope running ring of the running wheel held together by a cover plate 8, in a known manner with a larger diameter than the bent edge, the running ring 6 of the ball and the running gear? overlaps. Pin-shaped lugs 9 on the wheel at least approximately in the rolling plane ent- plate 4 penetrate holes in the cover plate 8 holding the rolling bearing of the radially inward 5 and hold them in place with the help of curved upper edge of a circular washer 10 firmly.

Aussparung am Boden des Gleitschuhs begrenzen- . Der Lagerspalt zwischen dem von den Teilen 3,4 den, aufwärts gerichteten Ringwand und der andere und S gebildeten Radträger und dem Gleitschuh 7 ist Laufring von dem mit einem in die Ringwand des durch eine Labyrinthdichtung abgedichtet, die aus Gleitschuhs eingesetzten Ringkragen versehenen, io einem am Laufring 5 befestigten Dichtungsring U schulterförmig in Form einer Wälzlagerlaufbahn ein- und einem in die den anderen Laufring 6 bildende gezogenen Randteil einer mit einer domförmigen Wand des Gleitschuhs 7 eingesetzten Metallring 14 Auswölbung für das Laufrad und mit nach unten ge- besteht. Der Dichtungsring 11 ist aus zwei Teilen 12, richteten Lageransätzen für dessen Achse versehenen 13 hergestellt, die zu einer Einheit verklebt sind, wo-Kreisplatte gebildet sind, wobei die beiden Laufringe 15 bei der Teil 12 aus einem Material mit verhältnismämit den zwischen ihnen eingeschlossenen Wälzkör- Big großem spezifischen Volumen besteht und die pern durch eine an der Oberseite der Ki^isplatte be- Aufgabe hat, Abweichungen in den Einbaumaßen festigte, den umgebogenen oberen Rand der Ring- auszugleichen, während der andere Teil 13 aus einem wand des Gleitschuhs übergreifende Deckplatte zu- Material von geringerem spezifischen Volumen besammengehalten sind, und daß der Lagerspalt /wi- .20 steht, das jedoch hohe Verschleißfestigkeit und gesehen dem Ringkragen an der Kreisplatte und der ringe Reibung aufweist. Der Ringteil 12 und der Ringwand des Gleitschuhs unterhalb des Wälzlagers Ringteil 13 können aus Maschinenfilz hergestellt durch eine Dichtung verschlossen ist. sein. Der den Dichtungsring 11 schützende Metall-Limit the recess at the bottom of the sliding block. The bearing gap between the parts 3.4 the upwardly directed ring wall and the other and S formed wheel carrier and the sliding shoe 7 is The running ring of the with one in the ring wall of which is sealed by a labyrinth seal, which is made The ring collar used with the sliding shoe and a sealing ring U attached to the raceway 5 one shoulder-shaped in the form of a roller bearing raceway and one in which the other raceway 6 forms drawn edge part of a metal ring 14 inserted with a dome-shaped wall of the slide shoe 7 Bulge for the impeller and with downwards. The sealing ring 11 is made up of two parts 12, aligned bearing lugs for its axis provided 13 made, which are glued to a unit, where-circular plate are formed, the two races 15 in the part 12 made of a material with relative proportions the rolling elements enclosed between them- Big large specific volume and the However, due to a task on the top of the ki ^ is plate, deviations in the installation dimensions consolidated to compensate for the bent upper edge of the ring, while the other part 13 consists of a wall of the sliding shoe overlapping cover plate to- material of lower specific volume held together are, and that the bearing gap / wi- .20 is, but the high wear resistance and seen the ring collar on the circular plate and the ring has friction. The ring part 12 and the Ring wall of the sliding shoe below the roller bearing ring part 13 can be made of machine felt is closed by a seal. being. The metal protecting the sealing ring 11

Mit dem erfindungsgemäßen Fahrwerk werden in ring 14 dient zugleich als Gleitring. Um zu verhinvorteilhafter Weise eine sichere und zugleich ein- as dem, daß Fremdkörper von der Unterlage, auf welfache Abdichtung des gesamten, das Schwenklager eher das Fahrwerk abrollt, mit dem Rad 1 in das Inenthaltenden Raumes innerhalb eines diesen um- nere des Gleitschuhs 7 gelangen und von hier in das schließenden Gleitschuh gegenüber dem Eindringen Kugellager 2 von oben eindringen, ist die Platte 4 von Schmutz und Textilfasern sowie ein geringer nicht mit einer Durchbrechung für das Laufrad 1, Raumbedarf in vertikaler Richtung erreicht, der 3° sondern mit einer dieses aufnehmenden domförmigen einen geringen Bodenabstand des Gehäuses über der Auswölbung 15 versehen. Vorsprünge 16 zu beiden zu bearbeitenden Fläche ermöglicht. Seiten der die Achse 17 des Laufrads 1 halterndenWith the chassis according to the invention are in ring 14 also serves as a sliding ring. To be more profitable Way a safe and at the same time as dem that foreign bodies from the surface, on which Sealing of the whole, the pivot bearing rather rolls off the chassis, with the wheel 1 in the contents Reach space within one of these nere of the sliding shoe 7 and from here into the If the closing slide shoe penetrates from above against the penetration ball bearing 2, the plate 4 is of dirt and textile fibers as well as a small one not with an opening for the impeller 1, Reached space requirement in the vertical direction, the 3 ° but with a dome-shaped receiving this a small clearance from the floor of the housing above the bulge 15 is provided. Projections 16 to both area to be processed allows. Sides of the axle 17 of the impeller 1 holding

Merkmale zur vorteilhaften Ausgestaltung der Er- Ansätze 3 an der Platte 4 sichern die Lagerachse 17Features for the advantageous configuration of the extension lugs 3 on the plate 4 secure the bearing axis 17

findung ergeben sich aus den weiteren Ansprüchen. gegen axiales Verschieben.finding result from the further claims. against axial displacement.

Die nachfolgende Beschreibung erläutert ein in der 35 Da der Gleitschuh 7 den Radträger mit dem Lauf-Zeichnung dargestelltes Ausführungsbeispiel. Es rad 1 vollständig umgibt, wird eine konzentrierte zeigt Belastung an der Befestigungsstelle vermieden. BeiThe following description explains a in the 35 Since the sliding shoe 7 the wheel carrier with the running drawing illustrated embodiment. It completely surrounds wheel 1, becomes a concentrated one shows stress avoided at the fastening point. at

Fig. 1 einen Vertikalschnitt durch eine bevoizugte den bekannten Fahrwerken mit vertikaler Schwenk-Ausführungsform des erfindungsgemäßen Fahrwerks, achse war eine derartige Beanspruchung oft Ur-Fig. 1 is a vertical section through a preferred the known chassis with a vertical pivot embodiment of the chassis according to the invention, such a load was often the cause

F i g. 2 eine Draufsicht auf den Gleitschuh und- das 40 sache von Störungen. Außerdem schützt der dasF i g. 2 is a plan view of the sliding shoe and the matter of disturbances. It also protects that

Fahrwerk bei abgenommenem Gerätegehäuse. Fahrwerk rings umschließende Gleitschuh 7 das RadTrolley with the device housing removed. Running gear all around the sliding shoe 7 the wheel

Zum Verschwenken eines Laufrades 1 um eine vor Beschädigungen, wenn das Gerät über Hindervertikale Achse dient ein Kugellager 2, dessen dreh- nisse wie Türschwellen u. dgl. hinwegbewegt wird, barer Laufring 5 vom Randteil einer horizontalen Durch entsprechende Auswahl des Materials der Kreisplatte 4 mit nach unten gerichteten Ansätzen 3 45 Platte 4 läßt sich eine gewisse Federwirkung in der gebildet ist. Die Ansätze 3 halten eine Lagerachse 17 Lagerung des Gerätegehäuses auf dem Laufrad 1 erfür das, Rad 1, die mit Querabstand zur Schwenk- reichen. Die vom Dichtungsring 11 und dem Metallachse des Kugellagers 2 angeordnet ist, so daß das ring 14 gebildete Labyrinthdichtung verhindert wirk-Rad 1 außermittig zur Schwenkachse des Kugella- sam das Eindringen von Staub und anderen Partikeln gers 2 liegt. Der andere Laufring 6 des Kugellagers 2 50 von der Bodenfläche her in das Kugellager 2, das wird von einer die Aussparung eines Gleitschuhs 7 wiederum eine leichte Verschwenkbarkeit des Laufumgrenzenden aufwärts gerichteten Ringwand gebil- rades 1 auch bei zu großem Spiel oder schiefem Eindet. Die beiden Laufringe S, 6 des Kugellagers 2 wer- bau der Anordnung sicherstellt.For swiveling an impeller 1 to prevent damage when the device is over vertical Axis is a ball bearing 2, whose rotations such as door sills and the like are moved away, Barer race 5 from the edge part of a horizontal By appropriate selection of the material of the Circular plate 4 with downward lugs 3 45 plate 4 can have a certain spring effect in the is formed. The approaches 3 hold a bearing axis 17 mounting of the device housing on the impeller 1 erfür that, wheel 1, which range with transverse distance to the swivel. The one from the sealing ring 11 and the metal axle of the ball bearing 2 is arranged so that the ring 14 formed labyrinth seal prevents acting wheel 1 eccentric to the swivel axis of the ball lamella, the penetration of dust and other particles gers 2 is located. The other race 6 of the ball bearing 2 50 from the bottom surface into the ball bearing 2, the the recess of a sliding shoe 7, in turn, enables the barrel to be easily pivoted upwardly directed ring wall formed wheel 1 even if there is too much play or an oblique indentation. The two races S, 6 of the ball bearing 2 are used to ensure the arrangement.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

Rolling bearing rotatable about a vertical axis wheel patent claims: carrier and an impeller mounted thereon behind this axis while driving.

1. Landing gear for a on its underside with a known landing gear of this type Household appliance provided with a sliding shoe such as 5 (US Pat. No. 3 003 179) only encloses a vacuum cleaner, a floor polisher or the like from a sliding shoe that extends down into the center of the sliding shoe of the impeller arranged and by means of a roller bearing around a U-shaped on the housing bottom of the household appliance a vertical axis rotatable wheel carrier and arranged axial ball bearing, on the lower one on it in the direction of travel behind this axis io running ring a the relatively large running wheel agelagereten Impeller, thus marked fork eccentric to the axis of rotation of the ball, that the device-side race (6) gers attaches. Apart from the resulting in a manner known per se with a larger overall height of the impeller bearing on the dust rail Diameter designed as the impeller (1) - suction housing and thus also of the sliding shoe, th and the axis (17) of the impeller (1) little 15 which in turn a strong one-sided load of the at least approximately in the rolling plane containing axial ball bearings result, the latter is against Rolling bearing from the radially inward bypassing the entry of dirt and textile fibers practically curved upper edge of a circular unprotected and required for a perfect recess at the bottom of the sliding shoe (7) the swiveling wedge of the impeller without the house border, upward-facing ring wall and a ° holding device for tilting when pulling across the floor the other raceway (S) of the one with one in the would tend to need frequent maintenance and rhyme Ring wall of the sliding shoe inserted ring collar.

provided, shoulder-shaped in the form of a swiveling wheel bearing for Mö ·

Rolling bearing raceway retracted edge part of a side piece and the like (I'SA. Patent 1743 255) M with a dome-shaped bulge (15) for the »5 it is also known as the angular contact ball bearing Impeller (1) and with a downwardly trained pivot bearing with a larger in-position Approaches (3) for its axis (17) provide the diameter as the outer diameter of the ncn circular plate (4) are formed, with the two running wheels and the latter within the to arrange the races (5, 6) with the lower barrel-closed rolling elements (2) lengthened upward like a single housing between them by means of a ring on the pivot bearing. Here lies the Top of the circular plate (4) attached, the about axis of the impeller at least approximately in the curved upper edge of the ring wall of the sliding and only slightly higher than the Wälzebenc shoe overlapping cover plate (8) together of the swivel bearing, and its upper race unrestrained are, and that the bearing gap engages between the lower race for the purpose of addition Ring collar on the circular plate (4) and the 35 hold together the parts with an inward-facing ring wall of the sliding shoe? (7) below the dead ring flange. Even if this storage for Rolling bearing (2) closed by a seal part of a downwardly open recess in the is. Piece of furniture is included, it is missing here

2. Chassis according to claim 1, characterized on a sliding shoe, for which, because of the comparative characterizes, that the seal consists of a movement of furniture in the Ge-ring wall, which is rare in the 4 <> wise used and the sliding shoe (7) in contrast to household appliances also no need bezum To continue towards the center of its recess. Furthermore, the sealing of the pivot bearing the metal ring (4) and one against which the lower race encompasses sen, on the edge part of the circular plate (4) flange on the upper race inadequate what attached sealing ring (11) consists. 45 also for the intended use

3. Running gear according to claim 2, characterized in that this storage is of no practical importance.
indicates that the sealing ring (11) from Furthermore, it is already known (USA patent specification two parts (12, 13) glued together - 2 972 162), spherical rollers are placed in one, of which one part (12 ) consists of a housing accommodating them below the upper sleeve, a material with a relatively large special gel support to be sealed by a horizontal ring seal that is placed against the Kugelumzinschem volume, such as a foam trap. such an immediate seal

4. Running gear according to claim 3, characterized in that it is otherwise essential in its structure indicates that the other against the metal - simpler impeller bearing can not be considered.

ring (4) directly adjacent part (13) of the 55 To seal shafts, rods or the like. It is Sealing ring (11) from a low friction also known that against the rotating part Material with high wear resistance, such as a sealing ring that fits with an elastic for example machine felt. Ring is vulcanized together and over this

supported on the fixed part (German Patent-60 scripture 884 439).

In contrast, the invention has the task

based on creating a chassis of the type mentioned, in which the height distance between

The invention relates to a chassis for an area provided with a sliding shoe on its housing bottom and the upper underside to be processed is kept small and in which the roller bearing is household appliance such as a vacuum cleaner, a Bonner or effective against the ingress of dirt and textile machine. Like., Consists of a fiber in the center is sealed.
of the sliding shoe arranged and by means of a This object is achieved according to the invention