DE1182400B - Fastening device for a motor blower unit in a vacuum cleaner - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: A 471

German class: 34 c -5/70

Number: 1182400

File number: A32540Ic / 34c

Filing date: April 26, 1955

Opening day: November 26, 1964

The invention relates to a fastening device for the motor blower unit of a vacuum cleaner, which is elastically mounted in its focal plane in the vacuum cleaner housing and aims a particularly simple and effectively securing the motor blower assembly in the housing.

This goal is achieved in that in the substantially cylindrical housing of the vacuum cleaner Internals distributed around the circumference and on the blower unit a flange are arranged on the outside of the circumference, which is arranged with a spaced therefrom Counterflange is connected, the counterflange and the internals having such a shape have that the blower unit with the mating flange can be guided past the internals, but the Built-in components when the blower unit rotates around its axis between the flanges on the blower unit are clamped according to the principle of a bayonet lock.

If, with a fastening device designed in this way, the motor blower unit is known per se Way is resiliently connected to a pot-like ring, there is a particularly useful Further development of the invention in that the pot-like ring has a radial outer flange is provided, through which the elastic seal is detected from the inside, and that the elastic seal with a first sleeve-shaped collar the shell part of the pot-like ring and with a second, oppositely directed collar encloses the motor blower unit, the support ring is slidably guided on the outside of the first collar and the resilient connection between the motor blower unit and the pot-like ring distributed by itself on its circumference in Axially extending screw bolts is formed, by means of which on the motor blower unit radially attaching eyes are braced between oppositely directed disc springs.

An embodiment of the invention is shown in the drawing. It shows

F i g. 1 a vacuum cleaner in side view, partially in section,

FIGS. 2 and 3 enlarged sections of FIG. 1,

F i g. 4 shows an enlarged section along line 4-4 in FIG. 1,

F i g. 5 shows an enlarged section along line 5-5 in FIG. 1,

F i g. 6 shows an enlarged partial section along line 6-6 in FIG. 3,

F i g. 7 shows an enlarged partial section along line 7-7 in FIG. 3.

Fastening device for a motor blower unit in a vacuum cleaner

Applicant:

Aktiebolaget Electrolux, Stockholm

Representative:

Dipl.-Ing. E. Jourdan, patent attorney,

Frankfurt / M., Frhr.-v.-Stein-Str. 18th

Named as inventor:

Lars Johan Faith-Ell, Stockholm,

Karl John Wahlborg, Vällingby (Sweden)

Claimed priority:

Sweden 19 May 1954 (4736)

In the housing 1 of the vacuum cleaner, the dust bag 2 and the motor blower unit are as usual 3 stored. The motor blower unit is suspended in a manner known per se in the center of gravity plane of the unit roughly in line I-I of FIG. 2. On the motor housing are known Way eyes 4 arranged against which tapered springs 5 apply, each by means of one Screw bolt 6 are kept under tension. The screw bolt 6 lies with an intermediate ring 7 against the bottom 8 of a pot ring 9, against which a sleeve nut 10 rests from the inside.

In this way the motor blower unit is in the center of gravity level with the one facing inwards Bottom 8 of the pot ring 9 firmly connected.

The pot ring 9 now engages with an outer flange 11 in a seal 12, the two collars 13 and 14 has. With the former, the seal 12 includes the pot ring 9, with the latter the Neck 15 of the motor blower unit.

The collar 13 of the seal is surrounded by a support ring 16, which has several, for. B. four projections 17 carries, which are firmly connected to the housing 1 in corresponding recesses 18 Flange ring 19 fit. The support ring 16 also contains the projections 17 adjacent Share holes 20 that are threaded

409 729/27

and in which screws 21 fit, which pass through corresponding bores of the seal 12.

The motor blower unit with the seal and the support ring 16 is inserted into the housing 1 from the outside inserted until the projections 17 of the support ring through the recesses 18 of the flange ring 19 have passed through. Then the motor blower unit is rotated until the projections 17 behind the fixed flange ring 19 are stepped, and then the screws 21 are tightened firmly.

The motor blower unit 3 is now seated firmly in the housing 1 and is flawless due to the seal 12 electrically isolated from the housing 1.

Claims (1)

Patent claims: 1. Fastening device for the motor blower unit of a vacuum cleaner, which is in his The center of gravity level is elastically mounted in the vacuum cleaner housing, characterized in that that in the substantially cylindrical housing 1 of the vacuum cleaner inside on the circumference distributed internals (flange ring 19) and on the blower unit (3) a flange on the outside of the circumference (Seal 12) are arranged, which is arranged with a counter flange arranged at a distance therefrom (support ring 16) is connected, the mating flange (16) and the internals (19) having such a shape, that the blower unit (3) with the mating flange (16) can be guided past the built-in components, however, the internals (19) when the fan unit (3) rotates about its axis between the flanges (seal 12 and support ring 16) can be clamped on the blower unit (3) according to the principle of a bayonet lock. 2. Fastening device according to claim 1, characterized in that it is by radial Projections (17) on a ring (16) carrying the motor blower unit (3) and corresponding Recesses (18) on a fixed flange ring (19) inside the housing after the protrusions (17) have been inserted and rotated between these and an elastic seal surrounding the motor blower unit (3) (12) can be clamped. 3. Fastening device according to claim 2, wherein the motor blower unit in itself known way is resiliently connected to a pot-like ring, characterized in that the pot-like ring (9) is provided with a radial outer flange (11) through which the elastic Seal (12) is detected from the inside, and that the elastic seal (12) with a first sleeve-shaped collar (13) the shell part of the pot-like ring (9) and with a second, oppositely directed collar (14) encloses the motor blower unit, the support ring (16) on the outside of the first collar (13) is displaceably guided and the resilient connection between the motor blower unit (3) and the pot-like ring (9) by extending along its circumference in the axial direction Screw bolt (6) is formed, by means of which radially attaching to the motor blower unit (3) Eyes (4) are clamped between oppositely directed disc springs (5). 1 sheet of drawings 409 729/27 11.6+ © Bundesdruckerei Berlin