WO2008028763A1

WO2008028763A1 - Hard floor nozzle

Info

Publication number: WO2008028763A1
Application number: PCT/EP2007/058386
Authority: WO
Inventors: Marko Geis; Albert Kleinhenz; Thomas Seith
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2006-09-05
Filing date: 2007-08-14
Publication date: 2008-03-13
Also published as: DE202007018642U1

Abstract

The invention relates to a hard floor nozzle which is suitably designed for vacuum-cleaning and wiping. The aim of the invention is to ensure that the wiper element (5) is evenly kept moist. For this purpose, the floor nozzle has an element for keeping away from a wiper element support (4) for a moist wiper element (5) the suction air flow produced during vacuum-cleaning.

Description

Floor nozzle for hard floors

The present invention relates to a novel floor nozzle for hard floors.

From EP 542 193 B1 a cleaning head for plane surfaces is known in which a cleaning zone is arranged between two suction chambers. Wiping devices are arranged on the opposite side of the suction zone of the suction chambers. Between the suction chambers and the cleaning zone, a brush is used in each case as a friction agent for the planar surfaces. Due to the formation of the friction agent as brushes liquid is sucked from the cleaning zone into the suction chambers.

Proceeding from this, the present invention has the object, in floor nozzles for hard floors, which are designed to work sucking and wiping suitable to improve the moisture retention on the wiper.

This object is achieved by a floor nozzle for hard floors, which has a means for keeping away a Saugluftstromes generated during suction of a wiper agent carrier for wet wiping. Due to the spatial proximity of the suction mouthpiece to the wet wiping means, there is the danger that, because of a high suction air flow, such a negative pressure will be generated below the floor nozzle that moisture will be sucked out of the wiper. This not only has the disadvantage that the wiper, so for example a wet wipe is dried out, but the absorbed moisture, can cause damage in a connected dry vacuum cleaner. The basic idea according to the invention is now to prevent moisture from being sucked out of the wiper by the suction air flow. This is achieved in that the suction air stream, which is required in unaltered size for a high Saugreinigungswirkung, from the wiping agent carrier and thus from the wiping agent i. kept away from the wipe. This can be done for example by a suitable air flow guide due to the Saugmundstückgeometrie, which prevents flow guidance over the wipe.

Preferably, the means for keeping the suction air stream away is arranged between the wiping medium carrier and a suction mouthpiece carrying the suction air stream Sealant. In this case, the suction air flow is not influenced directly, but the area of the wiping agent is fluidically separated from the area of the suction nozzles. About the sealant is a violation of a suction air flow in the region of the wiper prevented. Thus, suction of moisture from the wiper agent is reliably prevented and the wiper agent can be used longer for a wet cleaning of hard floors.

The sealing means may be a sealing lip of the floor nozzle which bears against the hard floor during suction. The sealing lip may be analogous to a windshield wiper of a vehicle, wherein the free sealing edge of the sealing lip is to rest on the floor to be cleaned sealing.

In an advantageous embodiment, the sealing lip is designed as a double lip. A double lip has a lip base on which two individual lips are formed. The two individual lips and the lip base body can be produced in an advantageous manner as a one-piece plastic injection molded part or extruded part. As a result, a cost-effective production is possible.

In all embodiments, the sealing lip may extend over the entire width of the floor nozzle. When the sealing lip extends over the entire width of the floor nozzle, the best sealing effect is achieved and the wiper agent is the least dried out. However, there may be other constructive or design technical aspects against expansion of the sealing lip over the entire width, but even when shortening the sealing lip a sufficient, albeit lower sealing effect can be achieved. For example, it would also be possible for two or more short sealing lips to be arranged so as to be sealingly offset relative to each other without extending over the entire width of the floor nozzle.

Preferably, the sealing lip is made of a material from the group of elastomers, polyolefins or silicone rubbers. According to the invention, these materials provide the best results in terms of sealing effect, elasticity in order to be able to adapt to uneven soils, and the production costs.

In a selection according to the invention, the sealing lip is made of tetrapolyethylene (TPE) and molded directly onto the floor nozzle. Two sealing means may be provided for sealing the wiping agent carrier with respect to two suction mouthpieces delimiting the wiping agent carrier. If a separate suction nozzle is provided in each case at a front end of the floor nozzle and at a rear end of the floor nozzle, then two sealing means are also provided in order to be able to seal the wiping agent or the wiping agent carrier from the respective suction air flows.

The wiping means may be held by jaws on the wiper means carrier, wherein the sealing means between the jaws and the suction mouthpieces are arranged to extend. Preferably, the jaws are formed by pivotally mounted suction mouthpieces, wherein the sealing means are arranged on the pivotally mounted suction mouthpieces. The jaws are preferably designed as terminal strips. The terminal strips may be connected to Saugkanalmundstücken, which are mounted to open and close the terminal strips adjustable on the floor nozzle. Due to the adjustability of the Saugkanalmundstücke the Saugkanmundmundstücke are in the moment in which the wipe to be attached to the floor nozzle pivoted outwardly, so that even with a further suction operation pending on the Saugkanalmundstücken suction air flow does not interfere with the attachment of the wipe. At the same time the weggeschwenkten Saugkanalmundstücke form pincer-like gripping elements, which is able to grip a wiping flat on the floor at the opposite end ge and be able to introduce in clamping joints, which are arranged between the terminal strips and the wiper means carrier. Thus, the wipe laid flat on the floor is automatically fixed to the floor nozzle by means of the clamping strips.

In the following figures, an exemplary detail of a hard floor nozzle according to the invention is shown in which a sealing lip is provided between the wiping means and the suction channel. Due to the air flow generated by the front and rear suction channel, the wet wiper is dried. To counteract this, it is proposed to arrange a sealing lip between the suction channel and the wiping means, which deflects the air flow. The sealing lip can be made of silicone or rubber and attached to the nozzle. Or the sealing lip consists of a TPE and is injected directly in one piece to the nozzle. - A -

The advantages of such a brush strip can be stated as follows: sucking and wiping a working step; automatic rewetting of the wiper; and: no drying out of the wiper by the air flow.

The features disclosed in the foregoing description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various forms.

An embodiment of the invention is described with reference to a floor nozzle exemplified in the figures.

Show it:

Figure 1 is a side perspective view of a floor nozzle for hard floors, which is designed for the work sucking and wiping suitable;

Figure 2 is a schematic representation of a wiper device for hard floors with a sealant according to the invention;

Figure 3 is a view of a double lip formed sealing means in cross section with terminal strips in a closed position according to Fig.1.

A floor nozzle according to FIG. 1 has a housing shell 1. This housing shell 1 is formed with a rectangular contour. Adjacent to two opposite longitudinal sides of the housing shell 1 a in the sliding direction of the floor nozzle front, shown in Fig. 1 left Saugkanalmundstück 2 and in the sliding direction of the floor nozzle behind, shown in Figure 1 right Saugkanalmundstück 3 are mounted on the floor nozzle. The front Saugkanalmundstück 2 and the rear Saugkanalmundstück 3 are pivotally mounted in the arrow direction on the floor nozzle. At the floor nozzle, a wiping agent carrier 4 is attached. At the bottom of the wiper support 4 is a wipe 5 at. In the illustrated position of the wipe 5 fastened to the wiping means carrier 4, the front suction-mouthpiece 2 and the rear suction-mouth nozzle 3 are in a closed position, in which the wipe 5 is pressed flat against the base. side of the wiper medium carrier 4 is held adjacent. In the illustrated closed position of the Saugkanalmundstücke 2 and 3, the opposite longitudinal edge portions 6 and 7 of the wipe 5 are clamped in a front clamping gap 8 and a rear nip 9 fixed to the floor nozzle.

A liquid supply device 50 has a liquid tank 11. The liquid tank 1 1 is detachably held on the floor nozzle. On the liquid tank 1 1, an elastic detent spring 12 is fixed, which has a handle portion 13. The handle portion 13 is formed integrally with the detent spring 12. The detent spring 12 is made of plastic and molded directly to the liquid tank 1 1. The detent spring 12 holds the liquid tank 1 1 fixed in a latched position on the floor nozzle. In addition, a filling opening 14 of the liquid tank 1 1 is closed by a lid 15 by means of the detent spring 12.

The floor nozzle is connected via a connection joint 16 with a receiving socket 17 for a suction pipe of a vacuum cleaner. The connection joint 16 is formed by a joint socket 18 and a joint ball 19. The joint socket 18 is provided in the floor nozzle and the joint ball 19 is connected to the receiving socket 17. The connection of the joint ball 19 to the receiving socket 17 is designed as a snap-locking connection 20. The snap-locking connection 20 is not rigid, but has a degree of freedom, so that the receiving socket 17 is rotatably mounted with respect to the joint ball 19 about a coaxial with the receiving port 17 extending axis of rotation 21. To realize this rotation about the axis of rotation 21, the receiving socket 17 has a plurality of circumferentially spaced inwardly directed latching hooks 22, which engage in an outwardly directed circumferential latching groove 23 at a connection 24 of the joint ball 19.

As shown in FIG. 2, as an alternative to the ball joint described in FIG. 1, the connecting joint for the guide device can be connected to the floor nozzle by means of a universal joint 299. The universal joint 299 consists of a first partial joint 300 and a second partial joint 301. The first partial joint 300 is formed by two attachment tabs of the floor nozzle and two nozzle-side intermediate link plates 304a, 304b and has a degree of freedom for pivoting the intermediate joint 303 with respect to the floor nozzle. The fastening tabs are on a housing part 31 1 attached to the floor nozzle, but may also be integrally connected to the floor nozzle. Depending on a fastening tab is connected by means of a rotary connection with a nozzle-side intermediate link plate 304a, 304b. At an end of the intermediate joint 303 opposite the nozzle-side intermediate joint plates 304a, 304b, two further tube-side intermediate joint plates 305a, 305b are provided. The nozzle-side intermediate link plates 304a, 304b can be injection-molded with the tube-side intermediate link plates 305a, 305b as a one-piece intermediate joint 303 made of plastic or bent from a sheet metal part. The tube-side intermediate link plates 305a, 305b are rotatably connected to two nozzle tabs 307a, 307b. Depending on a pipe-side intermediate joint tongue 305 a, 305 b is connected by means of a rotary joint 306 with a Stutz zen lasche 307 a, 307 b. The nozzle flaps 307a, 307b are connected to a pipe socket 309 for receiving the guide device. The guide device is preferably a suction tube of a vacuum cleaner. For fluidic connection of the floor nozzle with the suction pipe 299 a flexible piece of hose is arranged in the universal joint. The flexible hose piece is preferably designed as a corrugated hose made of plastic, which can carry out all joint movements of the cardan joint. A suction air flow is guided through the flexible hose piece which is located in the center of the universal joint 299. The universal joint 299 may alternatively be produced in one piece with the aid of the assembly injection molding process, so that a secure backlash-free connection is created. A rotational movement of the rotary joints can be converted by means of suitable coupling means into a movement of the clamping bars 200a, 200b.

FIG. 2 shows a schematic representation of a wiper device for hard floors with a sealing means 88 according to the invention. In the variant shown, the sealing means 88 consists of sealing lips 65a and 65b. Depending on a sealing means 88 is inserted in the form of sealing lips 65a and 65b between the wiper means carrier 4 and the Saugkanalmundstück 2 and the Saugkanalmundstücken 3. Each sealing lip 65a and 65b separates the negative pressure area of the suction channel mouthpieces 2 and 3 from the wiping means 5, so that the moisture is not sucked out of the wiping means 5 directly, without moistening the floor. At the same time, the sealing lips 65a and 65b act as scratches that can slide over the floor and release settled dirt. The sealing lip 65a and 65b extend over the entire width of the floor nozzle and have a substantially rectangular cross-section. In the embodiment with rectangular cross section The sealing lips 65a and 65b have a flat outer edge which, due to the rectangular configuration, has two right-angled corners which form two sharp edges of the sealing lips 65a and 65b. Depending on a forward or backward movement, the elastic sealing lips 65a and 65b may be folded counter to the sliding direction so that a single one of the two right-angled edges is directed against the bottom surface to be wiped and always forms a closed sealing edge, so that no suction air flow from the moisture Wipe 5 can continue. As an alternative to a rectangular cross section, the sealing lips 65a and 65b may also have a wedge-shaped cross-section with a sharp-edged tip at the free end of the sealing lips 65a and 65b. In this embodiment, a tilting movement of the sealing lips 65a and 65b should be inhibited as much as possible, so that the sharp-edged tip always rises substantially perpendicular to the bottom surface. In the variant shown in Fig. 2, the sealing lips 65a and 65b have straight free edges.

In Fig. 3, the closed position in which the wiper means 5 is held on the wiper means carrier 4 is shown. The clamping bars 200a, 200b have gripping ribs 213a and 213b, which, when moved from the open position of the clamping bars 200a, 200b, slide over the floor into a closed position and grasp a wiping means 5 placed on the bottom at their edge sections 6 and 7, and pull together the clamping gaps 8 and 9 pulls in until the edge portions 6, 7 between the wiper means carrier 4 and the terminal strips 200a, 200b supporting Saugkanalmundstücken 2 and 3 is clamped. The sealing lips 65a and 65b are formed as shown to increase the sealing and cleaning effect as double lips. For this purpose, two individual lips 90a, 90b are produced as a one-piece plastic injection-molded part. The individual lips 90 a, 90 b are integrally formed on a lip base body 91. The lip base body 91 is fixed to the suction channel mouthpieces 2 and 3 in a lip holding groove 92, respectively.

Claims

claims

1. Floor nozzle for hard floors, which is designed for the work sucking and wiping suitable, characterized in that the floor nozzle comprises a means for keeping away a Saugluftstromes generated during suction of a wiping medium carrier (4) for damp wiping means (5).

2. Floor nozzle according to claim 1, characterized in that the means for keeping the Saugluftstromes a between the wiper means carrier (4) and a Saugluftstrom leading Saugkanalmundstück (2, 3) arranged sealing means (88).

3. Floor nozzle according to claim 2, characterized in that the sealing means (88) during suction on the hard floor voltage applied sealing lip (65a, 65b) of the floor nozzle.

4. floor nozzle according to claim 3, characterized in that the sealing lip (65 a, 65 b) as a double lip (89 a, 89 b) is formed.

5. floor nozzle according to claim 3 or 4, characterized in that the sealing lip (65 a, 65 b) extends over the entire width of the floor nozzle.

6. floor nozzle according to claim 3 to 5, characterized in that the sealing lip (65a, 65b) is made of a material from the group of elastomers, polyolefins or silicone rubbers.

7. Floor nozzle according to claim 6, characterized in that the sealing lip (65a, 65b) made of tetrapolyethylene (TPE) and molded directly to the floor nozzle.

8. Floor nozzle according to claim 2 to 7, characterized in that two sealing means (88) are provided for sealing the wiping medium carrier (2) with respect to two suction channel mouthpieces (2, 3) delimiting the wiping medium carrier (4).

9. floor nozzle according to claim 1 to 8, characterized in that the wiper means (5) by clamping strips (200a, 200b) on the wiper means carrier (4) is held and the sealing means (88) between the clamping bars (200a, 200b) and the Saugkanalmundstücken (2, 3) are arranged running.

10. floor nozzle according to claim 9, characterized in that the clamping strips (200a, 200b) by pivotally mounted Saugkanalmundstücke (2, 3) are formed and the sealing means (88) on the pivotally mounted Saugkanalmundstücken (2, 3) are arranged.