WO2008028758A1

WO2008028758A1 - Hard floor nozzle

Info

Publication number: WO2008028758A1
Application number: PCT/EP2007/058378
Authority: WO
Inventors: Marko Geis; Carsten Hauptlorenz; 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: EP2063750A1; DE202007018646U1

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 improve the arrangement of the container for the cleaning liquid. For this purpose, the floor nozzle has a liquid supply device (50) for a wiper element (5) to be remoistened, said device comprising a liquid reservoir (11) which is detachably held on the floor nozzle.

Description

Floor nozzle for hard floors

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

From EP 447 627 A1 an attachable to a vacuum cleaner attachment is known which consists of a suction tube, a connectable with this mouthpiece and a suction tube arranged on the container for cleaning liquid, which accessory in Mundstückgehäuse a liquid-conducting connected to the container distribution strip and one of these , movably mounted applicator body is provided. Due to the arrangement of the container for cleaning fluid to the suction pipe of the vacuum cleaner working is cumbersome and when changing the vacuum cleaner nozzle to a clean suction nozzle of the separate container for cleaning fluid must be extra removed.

On this basis, the object of the present invention is to provide an arrangement, which is improved in comparison with the prior art, for a container for cleaning fluid.

This object is achieved by a floor nozzle for hard floors, which has a liquid supply device for a nachzufeuchtendes wiper means comprising a liquid tank which is detachably held on the floor nozzle. For refilling an empty liquid tank, it is useful to detachably attach the liquid tank to the floor nozzle. This has the advantage that an empty liquid tank can be separated from the floor nozzle and can be brought as a light and small separate part, for example to a faucet in a kitchen or a bathroom of a living area to fill the liquid tank with water. The solubility of the liquid tank thus facilitates refilling for a user.

In a preferred embodiment, the liquid tank is held on the floor nozzle via a first latching connection. The first locking connection prevents unintentional release of the liquid tank from the floor nozzle. Advantageously, the first latching connection comprises a locking spring connected to the liquid tank, which has at least one latching lug which engages behind a latching groove provided on the floor nozzle in a position of the liquid tank held on the floor nozzle. If the detent spring connected to the liquid tank, so the detent spring can not be lost. In this case, the detent spring can be integrally formed on the liquid tank. This has the advantage that this connection can be made inexpensively and with regard to a subsequent assembly, the variety of parts is reduced and thus the assembly time can be shortened.

The first latching connection may comprise a projection connected to the liquid tank, which is in particular arranged opposite a latching spring and which engages behind a recess provided on the floor nozzle in a position of the liquid tank held on the floor nozzle. Thus, both the first latching connection for holding the liquid tank to the floor nozzle and the second latching connection for holding the cover at the filling opening of the liquid tank can be formed by a single detent spring at the same time.

In one embodiment of the invention, the detent spring for manually releasing the first latching connection having a handle portion. The handle portion facilitates the release of the first and the second latching connection. The handle section may be integrally formed integrally formed on the detent spring.

For closing a filling opening, the liquid tank preferably has a lid, which is held on the liquid tank by means of a second latching connection in a position closing the filling opening. If the lid is held by a first latching connection to the liquid tank, so the lid can not be lost. A latching connection ensures that the lid is held in its closed position and no liquid can escape from the liquid tank unintentionally.

The first latching connection and the second latching connection can have a common latching spring, which can be pivoted to release the second latching connection in a direction opposite to that of the first latching connection. By this embodiment, either only the lid can be detached from the liquid tank or only the liquid tank can be detached from the floor nozzle. Despite using a single Detent spring for both the first locking connection and for the second locking connection can always be solved only one Ratsverbindung and not both locking connections simultaneously. This embodiment increases the reliability of the floor nozzle. In particular, a release of the lid is prevented when the complete liquid tank is to be removed.

A pivoting of the detent spring in one direction for releasing the second detent connection can be prevented in a position held by the first detent connection to the floor nozzle position of the liquid tank. This ensures that the lid can only be released when the liquid tank has been removed from the floor nozzle. This has the advantage that when inserted liquid tank in the floor nozzle, the lid can not inadvertently come loose and the filling opening releases, so that unwanted liquid could escape during operation.

For this purpose, the second latching connection can have a locking tongue connected to the cover, which engages behind a recess on the latching spring of the first latching connection in its position closing the filling opening.

In each embodiment, the liquid tank may have an outlet which is closed to prevent leakage of liquid when the liquid tank is removed by means of a sealing valve located in a position of the liquid tank installed in the floor nozzle in its open position. Thus, liquid can be removed during operation from the bottom of the liquid tank for wetting the wiper and at the same time prevents unwanted liquid from escaping from the bottom of the liquid tank when the liquid tank is removed. This increases the operational safety of the floor nozzle.

For sealing a connection connection between the liquid tank and a conveying line of the floor nozzle, the sealing valve can be arranged between the outlet and a hollow needle valve of the connection connection. The seal valve prevents leakage of liquid when the liquid tank is connected to the delivery line. At the same time the sealing valve acts as a closure when the liquid tank is removed. To open the sealed seal valve at the time - A -

when the liquid tank filled into the floor nozzle is inserted, the hollow needle valve penetrates into the sealing valve, thereby opening the access for the liquid.

Preferably, the opening of the outlet is arranged at the level of the maximum level and from this is a to the bottom of the immersed in the liquid tank suction line connected.

The figures show an exemplary detail of the hard floor nozzle according to the invention, in which a liquid tank is arranged in or near the nozzle. The tank is attached to the nozzle. It can be removed in particular for filling of the nozzle. From this tank, a line leads to the pump with the help of which the water is conveyed to the wiper. The tank is integrated in the design in the nozzle and transparent so that one can recognize the filling state of the tank from the operator side. The tank is hung on one side in the nozzle and then pivoted into the nozzle body. In the end position, the tank latches over a tab. The tab protrudes into an opening in the nozzle contour so that the operator can easily lift the tab and thus release the catch. The tank can be removed from the nozzle. The closure of the tank is coupled to the latching tab, so that a malfunction is excluded and the tank can only be opened in the removed position. About the closure of the water is transported from the tank. In addition, there is a seal that seals the tank and closes the connection between the tank and the nozzle.

The advantages of such a tank are in the customer friendliness of filling the tank.

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 perspective view from above of the floor nozzle of Figure 1 with the liquid tank removed.

Figure 3 is a perspective view of the liquid tank;

Figure 4 is a perspective view of a section of the liquid tank of Figure 3 in the region of the design panel at the level of the pump ..;

FIG. 5 shows a perspective view of a section of the liquid tank according to FIG. 3 in the region of the connection connection of the liquid supply device;

Figure 6 is a perspective view of a section of the liquid tank of Figure 3 in the region of the lid.

Figure 7 is a perspective view of a section of the liquid tank of FIG. 3 in the region of the handle portion for the lid.

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.

Fig. 2 shows the floor nozzle of Fig. 1 with removed liquid tank 1 1. In the housing shell 1 of the floor nozzle a receiving recess 49 for the liquid tank 1 1 is provided. The receiving recess 49 is integrally formed in the housing shell 1 of the floor nozzle. A liquid supply device 50 integrated into the floor nozzle has a connection connection 51, which is connected to a delivery line 52. The connection connection 51 has a hollow cylindrical dome 53, at the upper end of which a hollow needle valve 54 is arranged. Over one at the free end of the Hohlnadelven- Tils 54 provided opening is sucked from the liquid tank 1 1 (Figure 3) liquid flowing through the hollow cylindrical dome 53 in the feed line 52. The negative pressure for the suction of liquid from the liquid tank 1 1 is generated by a pump 100 which is connected to the delivery line 52.

The pump 100 is designed as a diaphragm pump and inserted into a pump chamber 55 in the floor nozzle. The pump chamber 55 is formed integrally with the housing shell 1. The pump 100 has a deflectable membrane 101 which can be activated by a ball 102 movably mounted in the floor nozzle. Due to a deflection of the membrane 101, a defined amount of liquid is pumped by the pump 100. The ball 102 is in a direction free rolling in a groove 103 of the floor nozzle. The channel 103 is integrally formed on the housing shell 1 of the floor nozzle. The curvature of the channel 103 is adapted to the diameter of the ball 102, so that the ball 102 is guided in the channel 103 and a lateral deflection of the ball 102 is limited. The channel 103 extends substantially in the sliding direction of the floor nozzle, so that the ball 102 is guided on a path on which the ball 102 can move freely in the sliding and pulling direction of the floor nozzle within a distance. The movement of the ball 102 along the distance of the channel 103 is induced in a forward or backward movement of the floor nozzle in the sliding direction or pulling direction due to the inertia of the ball 102. In a backward movement of the floor nozzle, the ball 102 at the front end of the distance of the channel 103 to the membrane 101 of the pump 100 so that the membrane 101 is set in motion and due to their deflection movement of a defined amount of liquid from the feed line 52 to a moisture transfer device 150 is transported. With a forward movement of the floor nozzle, the ball 102 moves away from the diaphragm 101 of the pump 100 and the membrane 101 can return to its original position. During its movement back to the initial position, a negative pressure is generated in a pump chamber 14 of the pump 100, which draws in a quantity of liquid from a supply line 104.

In Figure 3, the liquid tank 1 1 is shown. The liquid tank 1 1 has a chamber 26 for storing liquid. The chamber 26 is designed substantially parallelepiped and has an upper ceiling wall 27, a lower bottom wall 28 and four side walls 29 in the ceiling wall 27, the filling opening 14 is introduced. The filling opening 14 is closed by the lid 15. Between filling opening 14 and lid 15, a sealing gasket 30 is interposed. The closure seal 30 is attached to the lid 15, for example. The lid 15 is releasably secured by means of a detent spring 12 to the liquid tank 1 1. A release of the lid 15 from the liquid tank 1 1 takes place by pivoting the detent spring 12 laterally outwardly from the lid 15. A manual pivoting of the detent spring 12 is facilitated by the grip portion 13, which is formed on the detent spring 12, so that an actuation of the handle portion 13 transmits to the detent spring 12 and this can be pivoted to release the latching connection to the lid 15 ,

In the lower bottom wall 28 of the chamber 26, a bush-shaped recess 31 is formed, which is adapted in shape and size to the dome 53 of the liquid supply device 50 in the housing shell 1 such that the sleeve-shaped recess 31 in the installed position of the liquid tank. 1 1 in the floor nozzle precisely over the dome 53 inverts. A spout 32 corresponding to the hollow needle valve 54 of the housing shell 1 is equipped with a discharge opening 33. At the discharge opening 33, a sealing valve 34 is attached. In the inserted into the floor nozzle position of the liquid tank 1 1, the hollow needle valve 54 of the housing shell 1 penetrates into the sealing valve 34 of the discharge opening 33 at the outlet 32, so that the outlet 32 is opened and liquid from the liquid tank 1 1 via the outlet 32 and the connection connection 51 on the housing shell 1 in the conveying line 52 of the liquid supply device 50 can be conveyed out. The drain opening 33 is located near the upper end of the height of the liquid tank 1 1, so that when removed liquid tank 1 1 no or only a small liquid column is present at the closed drain opening 33. So that the entire liquid content can be pumped out of the liquid tank 1 1 during operation of the floor nozzle, the discharge opening 33 is connected to a suction line 35 whose free intake opening 36 extends close to the lower bottom wall 28 of the liquid tank 1 1.

The liquid tank 1 1 is integrated into a design panel 37 of the floor nozzle. The design panel 37 is cupped and adapted in shape and size to the shape of the floor nozzle. The design panel 37 extends over approximately the entire width of the floor nozzle. The design panel 37 has a collar cut-out 38, which as one side tig open cutout with arcuate contour of the design panel 37 is cut out. In the covered position of the design panel 37 on the floor nozzle, the contour of the joint ball 19 of the connection joint 16 can emerge from the nozzle plane via the collar cutout 38. About the collar cutout 38 with one-sided open cutout and arcuate contour a waisted constriction is created in the design panel 37, which forms a handle 39 for the liquid tank 1 1. At a liquid tank 1 1 opposite end of the design panel 37, a window opening 40 is introduced for a viewing window 41. The window opening 40 is cut out as a one-sided open cutout in the design panel 37. The inserted viewing window 41 allows in the installed position of the design panel 37 in the floor nozzle a view of the underlying pump 100 and the ball 102nd

Fig. 4 shows a section of the liquid tank 1 1 shown in FIG. 3 in the region of the design panel 37 in the amount of the pump 100. The recess 40 formed as a recess open on one side is bounded by two web portions 42a and 42b. Each web section 42a, 42b has a projection 43a or 43b. The projections 43a and 43b are part of a first latching connection 44 for releasably securing the liquid tank 1 1 to the floor nozzle. Each projection 43a or 43b of the design panel 37 is associated with a corresponding cutout 45a and 45b on the floor nozzle. In the attached to the floor nozzle position of the liquid tank 1 1, the projections 43a and 43b of the two web portions 42a and 42b engage in the respectively associated corresponding recesses 45a and 45b. The recesses 45a and 45b are formed as openings in the housing shell 1 of the floor nozzle. For inserting the liquid tank 11 into the bottom nozzle, the liquid tank 11 is supplied with the projections 43a and 43b in advance in the direction of the recesses 45a and 45b of the housing shell 1 in an oblique spatial position, and the projections 43a and 43b into the recesses 45a and 45b introduced. Subsequently, the liquid tank 1 1 or the design panel 37 is pivoted downward until locking lugs 46a and 46b of the first latching connection 44 can engage in latching grooves 47a and 47b on the housing shell 1. The latching noses 46a, 46b are arranged on an end of the design panel 37 opposite the projections 43a and 43b, ie in the region of the liquid tank 11. The latching noses 46a, 46b and the corresponding latching grooves 47a, 47b, together with the projections 43a and 43b and the recesses 45a and 45b in the housing shell 1, form the first latching connection 44. In Fig. 5 which are latching noses 46a, 46b of the liquid tank 1 1 and the corresponding locking grooves 47a, 47b of the floor nozzle shown in detail. In the housing shell 1 of the floor nozzle, the receiving recess 49 is formed. The receiving recess 49 is adapted in shape and size to the shape of the chamber 26 of the liquid tank 1 1, so that the chamber 26 is completely received in the receiving position 49 in the mounted position of the liquid tank 1 1. The receiving recess 49 is cuboid shaped. On a vertical boundary wall 56, the locking grooves 47a, 47b are inserted into the housing shell 1. The locking grooves 47a, 47b are formed as elongated slot openings which extend vertically in the boundary wall 56. For the function of the latching lugs 46a, 46b and latching grooves 47a, 47b connection, only the undercuts produced by the elongated slot openings in the region of the upper end of the boundary wall 56. The extension of the elongated slot openings to the bottom of the receiving recess 49 is due to production. The housing shell 1 is produced in one piece by plastic injection molding. For the simplest possible injection molding tool to be used without additional slides, undercuts of the mold parting planes must be avoided. In which the required for the function of the first latching connection 44 locking grooves 47a, 47b are formed in the form of elongated slot openings, recesses in the contour of the housing shell 1 are created without it comes with respect to the mold parting planes of the injection mold to undercuts.

The locking lugs 46a, 46b of the liquid tank 1 1 are provided on one of the vertical boundary wall 56 of the chamber 26 of the liquid tank 1 1 opposite side wall 29. The locking lugs 46a, 46b are formed on the spring-elastic detent spring 12. The detent spring 12 is made of plastic and formed directly on the side wall 29. The detent spring 12 is designed leaf-shaped with a substantially rectangular contour. The detent spring 12 is fixed to the side wall 29 with a lower fixed end. The free end of the detent spring 12 projects obliquely upwards and is oriented in its relaxed position of the side wall 29 away, so that the free end of the detent spring 12 can be bent to spring biased in one direction on the side wall 29. On the outer side surface of the leaf-shaped detent spring 12, the two locking lugs 46a, 46b are integrally formed. Each detent 46a, 46b has a wedge-shaped shape, wherein the wide end of the detent 46a, 46b is oriented towards the free end of the detent spring 12 and the pointed end of the detent 46a, 46b is oriented towards the fixed end of the detent spring 12. By means of the wedge-shaped shape of the locking lugs 46a, 46b, the detent spring 12 is pressed during insertion of the chamber 26 in the receiving recess 49 from its relaxed position into a spring-biased position until the wide ends of the wedge-shaped detents 46a, 46b behind the recesses of the detent grooves 47a, 47b can snap. Are the projections 43a and 43b of the liquid tank 1 1 in the corresponding recesses 45a and 45b of the floor nozzle (Figure 4) and the locking lugs 46a, 46b behind the recesses of the locking grooves 47a, 47b of the floor nozzle (Figure 5) is the Liquid tank 1 1 in the correct position attached to the floor nozzle. To release this first latching connection 44, the detent spring 12 on the handle portion 13. The handle portion 13 is located at the free end of the detent spring 12. The handle portion 13 extends over the entire width of the detent spring 12 and is curved channel-shaped, so that forms an accessible from below overhang into which the fingers of a hand can engage. By pulling the handle portion 13 in the opening direction of the liquid tank 1 1, the detent spring 12 is pivoted by the boundary wall 56 against its bias position, so that the arranged on the detent spring 12 detents 46 a, 46 b from the recesses of the detent grooves 47 a, 47 b move out and the first Free locking connection 44. To facilitate the intervention with the fingers of one hand in the groove-shaped downwardly curved handle portion 13, a trough 57 is formed on the housing shell 1. Due to the molded-in recess 57, the handle portion 13 is easily accessible at a position of the liquid tank 1 1 inserted into the floor nozzle.

Fig. 6 and Fig. 7 show perspective views of the lid 15 in a position close to the snapping of the lid 15 on the liquid tank 1 first The lid 15 has a plate-like shape and has a substantially rectangular contour. The contour differs slightly from a strict rectangle shape to achieve a desired design. In principle, the lid 15 fits flush in its snapped position in the contour of the liquid tank 1 1 and the design panel 37 a. In the latched position of the lid 15, the filling opening 14 is closed by the lid 15 liquid-tight.

The lid 15 has at its end shown in Fig. 6 on the left a latching tongue 58, which is arranged at one of the latching tongue 25 opposite end of the lid 15. The latching tongue 25 is arranged on an end of the lid 15 shown on the right in FIG. The counter-latching tongue 58 is integrally formed directly on the lid 15. A Gegenrastzunge 58 corresponding Gegenratrücksprung 59 is disposed on the liquid tank 1 1. To fasten the lid 15 to the liquid tank 1 1, the lid 15 is moved ahead with its counter-latching tongue 58 in the direction of the counter-latching return 59. As soon as the counter-latching tongue 58 engages in a window section of the counter-latching recess 59, the cover 15 can be pivoted downwards onto the latching spring 12 in the region of the end opposite the counter-latching tongue 58 on which the latching tongue 25 is located. To increase the sealing effect between the cover 15 and the filling opening 14, an additional third snap-action connection 59 is provided in the region of the filling opening, which keeps the lid 15 in a sealing position against the elastic clamping force of an elastic seal located between the lid 15 and the filling opening 14.

In Fig. 7, the latching tongue 25 is disposed at an end of the lid 15 shown on the right. After the counter-latching tongue 58, as shown in FIG. 6, engages in a window section of the counter-latching recess 59, the cover 15 can be pivoted downwardly onto the latching spring 12 in the region of the end opposite the counter-latching tongue 58 on which the latching tongue 25 is located. The latching tongue 25 snaps behind the recess 10 on the detent spring 12, so that the lid 15 is detachably attached to the liquid tank 1 1 at two opposite ends. The second latching connection 48 is thus formed by the latching tongue 25 and the counter latching tongue 58 of the lid in cooperation with the counter-latching recess 59 and the recess 10 on the detent spring 12 of the floor nozzle. The detent spring 12 far both the recess 10 of the second locking connection 48 and the locking lugs 46 a, 46 b of the first latching connection 44. By pivoting the detent spring 12 by means of the handle portion 13 to the outside, so in Fig.7 to the right, the second locking connection 48 of the lid 15 is released, so that the lid 15 can be removed from the liquid tank 1 1. On the other hand, by pivoting the detent spring 12 by means of the handle portion 13 inwardly, ie in Fig.7 to the left, the first locking connection 44 of the liquid tank 1 1 solved so that the liquid tank 1 1 can be removed from the floor nozzle.

If the lid 15 is inserted in the liquid tank 1 1 in the correct position and the liquid tank 1 1 in turn used in the correct position in the floor nozzle, so is because of the boundary wall 56 (Figure 5) pivoting of the detent spring 12 to the outside, so in Figure 7 to the right, prevented; ie in the inserted position of the liquid tank 1 1, the Detent spring 12 are not pivoted to release the second latching connection 48 to the outside, so that the lid 15 in the position used in the floor nozzle of the liquid tank 1 1 can not be removed. To release the lid 15 consequently the liquid tank 1 1 must be removed from the floor nozzle.

Claims

claims

1. floor nozzle for hard floors, which is designed to work sucking and wiping, characterized in that the floor nozzle for a nachzufeuchtendes wiper means (5) has a liquid supply means (50) comprising a liquid tank (1 1), which at the floor nozzle is removable.

2. Floor nozzle according to claim 1, characterized in that the liquid tank

(1 1) via a first latching connection (44) is held on the floor nozzle.

3. Floor nozzle according to claim 2, characterized in that the first latching connection (44) comprises a with the liquid tank (1 1) connected detent spring (12) having at least one latching lug (46 a, 46 b) held in a on the floor nozzle Position of the liquid tank (1 1) engages behind a provided on the floor nozzle locking groove (47 a, 47 b).

4. Floor nozzle according to claim 2 or 3, characterized in that the first latching connection (44) with the liquid tank (1 1) associated projection (43 a, 43 b), in particular a detent spring (12) is arranged opposite and in a held on the floor nozzle position of the liquid tank (1 1) engages behind a provided on the floor nozzle cutout (45a, 45b).

5. floor nozzle according to claim 3 or 4, characterized in that the detent spring

(12) for manually releasing the first latching connection (44) has a handle portion (13).

6. floor nozzle according to claim 2 to 5, characterized in that the liquid tank (1 1) for closing a filling opening (14) has a cover (15) by means of a second latching connection (48) in a filling opening (14) closing position is held on the liquid tank (1 1).

7. floor nozzle according to claim 6, characterized in that the first latching connection (44) and the second latching connection (48) have a common latching spring (12) for releasing the second latching connection (48) in one for releasing the first Ratsverbindung (44 ) opposite direction is pivotable.

8. Floor nozzle according to claim 7, characterized in that in a means of the first latching connection (44) held on the floor nozzle position of the liquid tank (1 1) prevents pivoting of the detent spring (12) in a direction to release the second latching connection (48) is.

9. Floor nozzle according to claim 7, wherein the second latching connection (48) has a latching tongue (25) connected to the cover (15), which in its position closing the filling opening (14) has a recess (10) on the Locking spring (12) of the first latching connection (44) engages behind.

10. floor nozzle according to claim 1 to 9, characterized in that the liquid tank (1 1) has an outlet (32) which is closed to prevent the leakage of liquid with the liquid tank (1 1) by means of a sealing valve (34) is in an installed at the floor nozzle position of the liquid tank (1 1) in its open position.

1 1. Floor nozzle according to claim 10, characterized in that for sealing a connection connection (51) between the liquid tank (1 1) and a conveying line (52) of the floor nozzle, the sealing valve (34) between the outlet (32) and a hollow needle valve (54). the connection connection (51) is arranged.

12. floor nozzle according to claim 10 or 1 1, characterized in that the opening of the outlet (32) is arranged at the level of the maximum level and from this to the bottom near the liquid tank (1 1) immersed suction line (35) is connected.