DE1059635B - Mouthpiece for vacuum cleaner - Google Patents

Description

GERMAN

There are vacuum cleaners known, the nozzle mouthpieces consist of flat plates, which a All around running, downwardly directed edge and within this edge likewise reaching downward Have ribs, through which individual separate channels are formed for the passage of air, from which it flows directly into the suction nozzle of the vacuum cleaner. With these known vacuum cleaner nozzles the ducts for the dust air to pass through are therefore on the underside of the mouthpiece between webs which are arranged in the manner of a harrow.

However, these known mouthpiece designs consist entirely of sheet metal and are therefore in all of theirs Parts rigid and cannot be compared with the properties of brushes. These known nozzles thus practice no brush-like effects.

On the other hand, brushes have become known for vacuum cleaners, which consist of bristles, for example are attached to the vacuum cleaner mouthpiece in the form of individual tufts. These brushes have the Disadvantage that when cleaning TextilstofTen and similar objects, such as carpets, Comb out the wool a little and thereby gradually increase the durability of the objects to be cleaned and affect their appearance.

According to the invention, these disadvantages are avoided in that the mouthpiece for vacuum cleaners, in which the dusty air is sucked in through ducts that are located on the underside of the mouthpiece as in a harrow arranged webs-formed, is formed such that the webs made of rubber or consist of a similar material and, crossing each other, form a grating, the top of which is from the inner wall of the mouthpiece body has a distance, so that a collecting space for the through the openings Dust air sucked in from the grating is formed, which flows from the collecting chamber into the intake port without vortices flows.

In a further development of the subject matter of the invention, the grating is framed by an edge strip, which protrudes over the upper edge of the webs and with an inwardly pointing rib in an annular groove in the peripheral wall of the mouthpiece engages while a second rib is against the lower edge of the peripheral wall supports the position in which the edge strip is held by its own elasticity. The bridges can have recesses at the crossing points over most of their height, making them in individual teeth are dissolved, which is more flexible compared to the continuous bars to have. It is useful to arrange the lower edges of the webs and the edge strip lying in one plane.

Mouthpiece for vacuum cleaner

Applicant:

Mauz & Pfeiffer,
Stuttgart-Botnang, Franz-Sctiubert-Str. 27

Ernst Faber, Stuttgart,
has been named as the inventor

Two embodiments of vacuum cleaner nozzles with rubber brushes according to the invention are shown in the drawing in purely schematic form.

Fig. 1 is a longitudinal section through the mouthpiece with brush plate along the line II in Fig. 2;

Fig. 2 is a view of the brush plate seen from below,

Fig. 3 is a section along the line III-III in Fig. 1;

Fig. 4 is a partial longitudinal section through another embodiment of the brush according to the line IV-IV in Fig. 5,

Fig. 5 is a cross-section along the line V-V in Fig. 4,

FIG. 6 shows a cross section along the line VI-VI in FIG.

The brush according to FIGS. 1 to 3 consists of crossing narrow webs 2, 3 running in the longitudinal and transverse directions, which are surrounded by an edge strip 1 and a large number of suction chambers 4 for the passage of the sucked air to the mouthpiece 5 and the suction nozzle 6 form. The edge strip 1 carries an inwardly facing rib 8 which engages in an annular groove in the peripheral wall of the mouthpiece. A second rib 7 of the edge strip 1 is supported against the lower edge of the peripheral wall, in which position the edge strip 1 is held by its own elasticity.

In de · λ embodiment of FIG. 4 to 6 recesses are provided at the intersections of the webs, are formed by the projections in the manner of teeth 12,13. By dividing the longitudinal and transverse webs into a large number of individual teeth, which are only connected to one another at the top of the grating, more elastic mobility of the teeth and thus a better brushing effect is achieved than with continuous webs.

909 557/39

Claims (4)

Patent claims: 1. Mouthpiece for vacuum cleaner, in which the dust air is sucked in through channels which are formed by webs arranged on the underside of the mouthpiece like a harrow, characterized in that the webs (2, 3) are made of rubber or a similar material and , crossing each other, form a grating, the top of which is at a distance from the inner wall of the mouthpiece body (5) so that a collecting space (5 a) is formed for the dust air sucked in through the openings of the grating, which flows from the collecting space into the suction nozzle ( 6) flows. 2. Mouthpiece according to claim 1, characterized in that the grating is bordered by an edge strip (1) which projects beyond the upper edge of the webs (2, 3) and with an inward facing rib (8) engages in an annular groove of the peripheral wall of the mouthpiece (5) , while a second rib (7) is supported against the lower edge of the peripheral wall, in which position the edge strip (1) is held by its own elasticity. 3. Mouthpiece according to claims 1 and 2, characterized in that the webs on the Crossing points have recesses over most of their height, whereby the Bars are resolved into individual teeth, which compared to the continuous bars a have greater flexibility. 4. Mouthpiece according to claims 1 to 3, characterized in that the lower edges of the The webs and the edge strip lie in one plane. Considered publications:
U.S. Patent No. 2,554,238. 1 sheet of drawings © 909 557/39 6.59