HK1063141B - Floor nozzle for vacuum cleaner - Google Patents

Description

Floor nozzle for vacuum cleaner

Technical Field

The invention relates to a floor nozzle for a vacuum cleaner with a cleaning head having a substantially rectangular bottom with two narrow sides and two broad sides and being provided at its bottom side with a suction nozzle which extends over the width of the cleaning head and is intended for cleaning the floor with vacuum. At least one brush for cleaning the vertical surface is arranged outside the dust collection head, a brush surface is arranged on the brush, and the brush surface is composed of a plurality of brush hairs which are arranged at intervals along the transverse direction. The floor nozzle operates as a static floor nozzle without rotating fittings and is provided with an underside sliding bottom surface on which a nozzle is arranged, which is shaped in the form of a channel. Other brush arrangements provided with a rotatably driven brush roller also fall within the scope of this term. The brush roller is arranged in the brush roller cavity of the dust collection head, and the bottom side of the dust collection head is also provided with an opening forming a suction nozzle. The brush device may be provided with a movable suction pipe connection member and a suction pipe formed as a manipulating rod. Within the scope of the invention, it is also possible to consider: the floor nozzle is a fixed part of the vacuum cleaner, which is also shown as an upright vacuum cleaner.

Background

A floor cleaning nozzle having the above characteristics is disclosed in us patent 4198727. In the front region of the outer surface of the cleaning head, the floor nozzle is provided with a brush holder in the form of a U which is arranged at a distance in the transverse direction, while the cleaning head is positioned in the longitudinal direction with respect to the working direction. In the bristle holder, the dust suction head is provided with a round hole which is separated from the ground by a certain distance and is used for sucking dust particles scattered by the bristle holder. If the brush has a small horizontal extension, it can be difficult to slide the floor nozzle over a wall surface or a vertical surface to be cleaned. Therefore, there is a need for improved sweeping operations on vertical surfaces. In addition, the outer surface of the cleaning head may rub against a wall surface and may scratch the wall surface when vacuuming floor areas adjacent to walls and sensitive surfaces.

DE9013080U1 discloses a floor nozzle with a cleaning head, around the outer surface of which a continuous bristle strip is arranged for cleaning vertical surfaces. With such floor nozzles, the cleaning operation is limited because the functions of the brush and the vacuum cannot be coordinated with each other.

Us 6381802B1 discloses a floor nozzle for a vacuum cleaner having a cleaning head with a suction nozzle at the underside for vacuum cleaning the floor and a plurality of brushes on the outside of the cleaning head for cleaning the edge surfaces of the floor. The floor nozzle includes a rotating brush roller. The brush should be able to sweep areas that the brush roller does not contact. The device is not provided with components that enable vacuum cleaning of vertical surfaces.

Us 4888852 discloses a floor nozzle for a vacuum cleaner having a cleaning head, the device being provided with a suction nozzle extending across the width of the cleaning head. On this device, no surface is mounted for cleaning the skirting board.

Disclosure of Invention

In view of the above problems, the present invention provides a floor nozzle for a vacuum cleaner that can simultaneously clean a vertical surface such as a skirting board in the form of a carpet molding (carpet molding) when the device is used to vacuum-clean a floor located in the vicinity of a wall.

According to the invention, this problem is solved by: the brush surface extends substantially the full height of the cleaner head and also extends along the narrow or wide side of the cleaner head which defines the boundary of the base; a plurality of inlets for sucking dust on the edge of the floor are arranged on the suction nozzle arranged on the narrow side surface of the dust suction head. With the device of the invention, a wide strip on a wall can be cleaned. Because the brush can have a greater length, it is possible to thoroughly clean the wall surface in one operation. The suction nozzle extending over the entire width of the cleaning head, the inflow opening on the narrow side of the cleaning head, and the front nozzle edge make it possible to perform direct, effective vacuum cleaning of dust particles brushed off by the brush surface. The brush with a greater length also facilitates the guiding of the suction head along a vertical surface, further improving the sweeping action. In addition, scratching or damage to sensitive surfaces can be substantially avoided.

The brushes are preferably arranged on two outer surfaces which are oriented in the direction of suction of the suction head and which form the narrow sides. In this way, by cleaning with the cleaning head arranged in the conventional manner transversely to the cleaning direction, skirting boards located in the vicinity of and bounding the wall can be cleaned at the same time, so that already loosened dust particles are sucked away directly by vacuum via the transverse flow inlet.

According to another preferred embodiment of the invention, the cleaning head is provided with a suction pipe connection which is movable about two axes and which can be manipulated to position the cleaning head transversely and longitudinally with respect to the cleaning direction. In such floor cleaning nozzle embodiments, the brush is disposed on the wider side of the cleaning head. Thus, the brush surface is very large. The edge of the front suction nozzle of the dust suction head can effectively suck away the dust particles scattered by the brush.

According to a further embodiment of the invention, the cleaning head is connected to a housing provided with the cleaning channel in a manner rotatable about a vertical axis.

The brush may be removably mounted to the cleaning head by means of a clamp, detent connection, threaded connection, dovetail guide and the like. The brush preferably has a brush back which is adapted to be connected to the connection region of the cleaning head and which is rigidly mounted (positive fit) on the cleaning head. Thus, the brush can be easily removed from the cleaner head when required, and a new brush can be used instead of a used one. Furthermore, the material of the brush should be suitable for various applications.

Within the scope of the invention, it is also conceivable to form the brush integrally with the cleaning head in an injection molding process. This makes it possible to reduce the manufacturing cost of the floor nozzle provided with an outer brush according to the present invention. Furthermore, the adhesive is also omitted.

Drawings

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the drawings:

FIG. 1 is a cross-sectional view of a floor nozzle with a removable brush;

FIG. 2 is a cross-sectional view of a floor nozzle with a brush formed by injection molding;

FIG. 3 is a perspective view of a floor nozzle with brushes on both narrow sides of the cleaning head;

figures 4 and 5 show other forms of floor cleaning nozzle according to the invention.

PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION

Fig. 1 shows a floor nozzle for a vacuum cleaner provided with a cleaning head 1, which cleaning head 1 is provided at its underside with a suction nozzle 2 for cleaning a floor surface 3 by means of vacuum. On the outside of the cleaning head 1, a brush 4 is arranged for cleaning the edge area of the floor. The brush 4 is provided with a brush surface adjusted to the height of the skirting board 5 and provided with bristles 6 arranged laterally at a distance for sweeping the vertical surface of the skirting board 5. The suction nozzle 2 extends over the entire width of the cleaning head 1 and is provided at the end with an inflow opening 7 for vacuum cleaning of the floor edge, the end of which is located below the brush 4. The dust particles loosened by brushing the skirting board 5 can be sucked away by the suction airflow generated in the inflow opening 7. The inlet opening 7 is a recess leading to the floor and is provided at the underside of the cleaner head.

In the embodiment shown in figure 1, the brush 4 is removably connected to the cleaner head 1 by a positive fit connection. The brush 4 is provided with a brush back 8, which brush back 8 is adapted to be connected to an attachment area of the cleaner head 1, for example by means of a dovetail guide, in a positive fit to the cleaner head 1. In the embodiment shown in figure 2, the brush 4 is integrally formed on the cleaner head 1 by an injection moulding process.

Figure 3 shows a perspective view of a floor nozzle whose cleaning head 1 is provided with a substantially rectangular base and a plurality of brushes 4, the brushes 4 being provided on both outer surfaces of the cleaning head 1 which are oriented in the direction of cleaning. The brush 4 has a large surface area and in this embodiment the brush 4 also extends over almost the entire narrow side 15, 15' of the cleaning head 1. An inflow opening for sweeping the edge of the floor is provided below the brush surface. In fig. 3, the inflow opening is hidden and comprises a recess provided in the lower edge of the cleaning head and opening onto the floor, said recess also opening into the suction nozzle.

Similarly, the floor nozzle shown in figure 4 has a cleaning head 1 which also has a generally rectangular base and is provided with a suction attachment 10 which is movable about two axes 9, 9', the suction attachment 10 being operable to enable the cleaning head 1 to be positioned transversely and longitudinally with respect to the direction of cleaning. The brush 4 is arranged on the broad side 11 of the housing of the cleaning head 1 and extends over substantially the entire surface of the broad side 11 of the housing. On the narrow sides 15, 15' of the cleaning head, an inflow opening 7 is provided for cleaning the edge of the floor by vacuum, which inflow opening 7 is made as a recess on the lower edge of the cleaning head and opens into the floor.

Fig. 5 shows a perspective view of a floor nozzle whose cleaning head 1 is connected to a housing 13 in a rotatable manner about a vertical axis 12. The housing 13 houses a suction passage leading to a suction nozzle of the cleaner head. The cleaning head is provided with a substantially rectangular base. The brush 4 is arranged on the outside of the cleaning head along the side 11 delimiting the bottom and extends over substantially the entire side 11. On the narrow side, the inflow opening 7 can be seen.

In the floor cleaning nozzle shown in figures 2 to 5, the outer brush surface extends over the entire height of the cleaning head 1. All the examples show a static nozzle, which is suitable for understanding the concept of the invention. However, it is within the contemplation of the invention to apply the features of the invention in a similar manner to the brush member.

Claims (5)

1. A floor nozzle for a vacuum cleaner with a cleaning head (1), said cleaning head having a substantially rectangular bottom with two narrow sides (15, 15') and two wider sides (11), and on one bottom side a suction nozzle (2) for cleaning the floor by vacuum is arranged, which nozzle extends over the width of the cleaning head, wherein at least one brush (4) for cleaning vertical surfaces is arranged on the outside of the cleaning head (1), said brush (4) having a brush surface, which brush consists of a plurality of bristles (6) arranged at a lateral spacing; and the suction nozzle (2) has a plurality of inflow openings (7) arranged on the narrow sides (15, 15') of the suction head (1), which inflow openings (7) are used for cleaning the edge portion of the floor by vacuum, characterized in that: the brush (4) is arranged on the wide side surface (11) of the dust collection head (1); and said brush surface extending substantially over the entire height of the cleaning head (1) and along a broad side (11) of the cleaning head (1) defining said bottom boundary; and the cleaning head (1) is provided with a suction tube connection (10) which can be moved about two axes (9, 9'), the cleaning head (1) being able to be positioned transversely and longitudinally with respect to the cleaning direction by actuating the connection (10).

2. The floor nozzle of claim 1, wherein: the cleaning head (1) is connected to a cleaning channel in a manner such that it can be rotated on a housing (13) about a vertical axis (12).

3. A floor nozzle according to claim 1 or 2, wherein: the brush (4) is detachably connected to the cleaner head (1).

4. A floor nozzle according to claim 3, wherein: the brush (4) has a plurality of brush backs (8) which are adapted to be matched to the connection region of the cleaning head and which are held on the cleaning head (1) in a positive fit.

5. A floor nozzle according to claim 1 or 2, wherein: the brush (4) is integrally formed on the cleaner head by an injection molding process or is adhered to the cleaner head.