DE1013398B - Vacuum polisher - Google Patents

Description

GERMAN

The invention relates to the air supply motor-driven railroaders as an accessory to vacuum cleaners, especially stick vacuum cleaners. at The brush is driven by its own motor for these polishers; but they do not have their own Fan. The air flow inside the device as well as the transfer of the air flow from the device to the Special attention must be paid to vacuum cleaners with these devices to avoid dust deposits and flow losses to avoid if possible. The known designs are the demand for eddy-free Flow as a result of irregular curvatures, edges, too large, abrupt changes in cross-section, Formation of cavities and the like not fair. The connections to the vacuum cleaner are device-restricted, too expensive and cumbersome and still tend to leak. So 'is z. B. the per se in the case of non-motor-driven floor polishing brushes, the usual articulated nozzle is used as a coupling element between floor polishing and vacuum cleaner been stretched. This requires two fitting points, namely the cone fit between the suction pipe or Suction nozzle on the vacuum cleaner and articulated nozzle and the much more difficult to standardize adaptation of the wide nozzle on the floor polisher housing. At this point there is also the risk of wakefulness and the Leakage despite elastic intermediate layers.

According to the invention, the floor plan is in the floor plan of an isosceles Has a triangle with strongly rounded corners, cast a downwardly open annular groove with a U-shaped cross-section, which extends at the base of the triangle to the lower edge of the housing, a suction slot forms and from there enclosing the motor housing to their cross-section enlarging suction channels is covered, which extend to below the ceiling surface of the floor polisher and here in one in the Joint socket inserted into the housing for connecting a suction tube open.

The shape of the cross section of the annular groove changes from a raised rectangle at the suction point more in a square. This results in a narrow suction slot at the suction point, which extends over the whole base of the triangle is enough. The ring groove, which is open at the bottom for reasons of casting technology, is except for the suction opening at its narrow points by an inserted T-shaped rubber profile and on Their broad areas are closed by a screwed-on sheet metal to form a suction channel. The suction channel is This makes it easy to access and open for cleaning in a very advantageous manner.

The joint socket is inserted into a rectangular cutout of the trainer's housing and is in it held by lateral pegs. The swiveling vacuum polisher

Applicant:

LICENTIA Patent-Verwaltungs-G.m.b.H., Hamburg 36, Hohe Bleichen 22

Fritz Hartwig and Bernhard Bösche,

Oldenburg (Oldbg.),
have been named as inventors

is due to the cylindrical design of the joint head achieved. Sealing strips inserted in between, which are either in Grooves of the housing cutout are inserted or pressed elastically from the inside against the joint head.

Since the cones of the individual vacuum cleaner types differ only slightly, it is suggested that Set down the cone at the joint a little or turn it back and replace it with an exchangeable one elastic lining made of rubber or plastic, so that it is practical for any vacuum cleaner is to be used. Due to the large support on the cone and the low wall thickness The elasticity of the elastic insert is not disadvantageous when handling the floor polisher. Particularly when the cone is turned back, no fastening of the elastic insert is necessary, which only needs to consist of an inserted tape. Otherwise the same security given by simply gluing in.

The drawing shows an embodiment of the Invention in

Fig. 1 in a view of the device from below and in

Fig. 2 in a section through the center line.

In the floor polisher housing 11 is in a closed construction

4-5 as the drive motor with gear 12 for the Brush 13 installed. The annular groove 14 forms the suction nozzle on the front side 15 of the floor polish housing 11 or the suction slot 16. Otherwise, the groove is inserted into it by the T-shaped cross-section inserted rubber beads 17 and further covered by the screwed-on sheet metal 18 to the suction channel. the Air flow is indicated by the arrows 19.

At the top of the annular groove 14, where it touches the ceiling of the floor polisher housing, is in a reoht-

709 656/20

angular recess 20 of the joint socket 21 used, which is held by the lateral pin 22 therein will. The joint head 23 is designed as a roller, so that the joint socket around the pin 22 is pivotable. Thanks to the elastic intermediate layers inserted from the inside of the floor polisher 24, e.g. made of rubber, the joint socket is reliably sealed against external air, so that there is no loss of suction power through the joint. Nadh outside goes the joint head with the rectangular one -Passage 25 into the cone 26 over. This is somewhat offset at the beginning of 27 and at the end of 28 or- back-turned, -to the- replaceable elastic To give insert 29 to adapt to versohiedene cones so much support that a further fastening unnecessary.

Claims (9)

PATENT CLAIMS: 1. Saugbdhner with own motor driven Brushes as an additional device for vacuum cleaners, characterized in that the floor plan of the floor plan has the shape of a floor polisher has an isosceles triangle with strongly rounded corners, an annular groove open at the bottom U-shaped cross-section is cast in at the base of the triangle to the bottom of the housing, forms a suction slot and from there enclosing the motor housing their cross-section enlarging suction channels is covered, which extend up to under the ceiling surface of the Extend polisher housing and here in a joint socket inserted into the housing for connection open out of a suction pipe. 2. Saugbdhner according to claim 1, characterized in that that the cover of the annular groove to suction channels partly by inserted profile strips T-shaped cross-section made of elastic material similar to rubber, partly through a screwed on Sheet takes place. 3. vacuum floor polisher according to claim 1, characterized in that the joint socket (21) on the Contact point of the annular groove (14) with the ceiling of the floor polisher housing (11) in a rectangular Cutout is inserted. 4. vacuum floor polisher according to claim 1, characterized in that the joint head (23) of the joint support (21) is designed in a manner known per se as a roller. 5. vacuum floor polisher nadh claim 1, characterized in that the joint socket (21) by two laterally inserted pin (22) is pivotable. 6. Saugbdhner according to claim 3, characterized in that the joint socket (21) by in Grooves of the housing cutout (20) inserted sealing strips against in a known manner External air is sealed. 7. vacuum floor polisher according to claim 1, characterized in that the joint socket (21) through inside opposite, elastic intermediate layers (24) is sealed against external air. 8. vacuum floor polisher according to claim 1, characterized in that the conical joint socket (26) is undercut almost over its entire length and an exchangeable elastic insert (29) made of rubber or rubber-like material. 9. vacuum floor polisher according to claim 8, characterized in that the insert (29) consists of one There is a band that is bent to form a truncated cone cut open along a surface line. Considered publications:
German Patent Nos. 688 768, 515 568;
U.S. Patent No. 2,214,725;
British Patent No. 433 007. 1 sheet of drawings © 709 656/20 7.57