WO2008028747A1 - Hard floor nozzle - Google Patents

Abstract

The invention relates to a hard floor nozzle which is suitably designed for vacuum-cleaning and wiping. In order for the wiper element (5) to be more reliably secured and more easily detached, the holder has clamping strips (200a, 200b) that can be opened and closed and that are configured for clamping the edge sections (6, 7) of the wiper element (5). The connecting joint (16) is received on the wiper head in such a manner that an adjusting movement for carrying out opening and/or closing movements of the clamping strips (200a, 200b) is triggered when the connecting joint (16) is actuated.

Description

 Floor nozzle for hard floors

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

A suitable for the work sucking and wiping trained floor nozzle for Hartbö- is known for example from WO 02/085174 A1. The vacuum cleaner mouthpiece described has a plate with a bottom, which rests on a floor. The plate carries a wiper. The wiping means is arranged between two suction channels, which are connected to a suction pipe of a vacuum cleaner. Velcro closures are provided for fastening the wiping agent to the wiping means carrier, by which attachment of the wiping means is only very cumbersome. If the wiper agent is completely soiled, it is only possible to remove the used wiper agent with great force and in an unpleasant manner since the soiled wiper agent has to be touched.

On this basis, the present invention has the object to provide a comparison with the prior art improved attachment and improved release for the wiper.

This object is achieved by a wiper device for hard floors, in which a clamping holder has open and closable terminal strips, which are designed for clamping the edge portions of the wiper means and the connection joint is mounted on the mop head, so that by actuating the connection joint an adjusting movement for execution is triggered by opening and / or closing movements of the terminal strips. Preferably, the holding means may comprise two spaced apart clamping holders, which are designed to hold opposite ends of the wiper means. By holding the opposite ends of the wiper, the wiper is not only attached to the floor nozzle, but stretched like a sheet flat and wrinkle-free over the wiper means carrier. Due to the uniform and at least approximately wrinkle-free clamping a uniform surface contact of the wiper means is ensured to the moisture transfer device. The moisture transfer device serves to uniformly supply the liquid provided by the liquid supply device over a surface distribute so that a mop is soaked evenly with liquid. The wiper may be a wipe. In one embodiment, at least one of the clamping holders has a movable clamping strip for fixing one end of the wiping means to a fixed supporting surface of the floor nozzle in a position of the wiping cloth mounted on the underside of the wiper medium carrier. The clamping holders designed as clamping strips preferably fix the ends of the wiping cloth to the floor nozzle or the wiping means carrier. By using terminal strips, the wipes can be easily and quickly fixed and released again from the floor nozzle. This facilitates handling for a user.

Preferably, a connection joint of the floor nozzle is designed as a mechanical adjusting means. In this embodiment, the floor nozzle on a connection joint with a receiving socket for a suction line, which is designed to carry out an adjusting movement for opening and closing the terminal strips. The connection joint according to the invention has all known from conventional vacuum cleaner functionalities. As an additional functionality according to the invention, the connecting joint forms an actuating element for opening and closing the holder for the wiping means, i. the wipe. Thus, by simply pressing a vacuum cleaner pipe connected to the floor nozzle or a guide stem of a mop, the clamp can be released or locked. This has the advantage that the user does not have to stoop to open and loosen the wipe to the floor nozzle, but relaxed while standing can loosen or fix the holder for the wipe.

Preferably, the opening movements of the terminal strips are triggered by vertical pressing of the connection joint down. For this purpose, the connection joint may be mechanically coupled to convert its adjusting movement into the opening and / or closing movement with the terminal strips. To move the Saugkanmundmundstücke in a position in which the terminal strips are in the open position, the Saugkanalmundstücke with mechanical adjusting means, which in particular include intermediate lever, be connected. In this case, the movable terminal strip for clamping the wiper means on the floor nozzle have a manually operated lever. The lever is then directly mounted on the floor nozzle and connected via a coupling mechanism with the terminal strips. In an advantageous embodiment, the terminal strips are guided in guide slots of the wiper head. By the guide slots an exact trajectory for the pivotal movement of the terminal strips is specified. The pivoting movement can not only be a pure rotational movement about an axis of rotation, but also include transverse movement components.

The connecting joint may comprise a joint ball which can be coupled to the guide device and which is guided between a upper half of a joint socket movably mounted in the mop head and a lower joint half half movably mounted in the mop head, at least one driver connected to this joint half half being actuated by pressing the joint ball against the lower movable joint half, through which the terminal strips are opened. By means of the movably mounted joint half of the half, exact guidance of the connecting joint by means of the ball joint is achieved on the one hand, and on the other hand an additional degree of freedom of linear mobility is created in order to be able to release the adjusting movement for moving the suction channel mouthpieces.

In this case, the terminal strips can be actuated via intermediate lever, which are preferably pivotally mounted in the mop head and which transmit a movement of the driver of the lower movable Gelenkspfannenhälfte on the terminal strips. The intermediate levers ensure a uniformly distributed transmission of the introduced adjusting movement of the connection joint to the retaining arms of the clamping strips, so that the clamping strips or the suction channel mouthpieces can be moved without tilting with little effort.

Preferably, two adjacent to each other arranged intermediate lever are provided which actuate different terminal strips and which are actuated by means of a common driver. The driver is preferably attached to the movable Gelenkspfannenhälfte. Each driver operates two intermediate levers, of which both one leads to one of the two terminal strips or the Saugkanalmundstücke.

In advantageous variants, the terminal strips, the intermediate lever or the lower movable Gelenkspfannenhälfte are spring biased in the closed position of the terminal strips. A spring preload ensures reliable holding of the wiper system. - A -

guaranteed at the floor nozzle in all operating modes. The spring preload can be generated by a spring coil or a bending spring, which can be inexpensively manufactured and assembled.

Preferably, the wiper head for pressing the joint ball is formed only in a substantially vertical orientation of the coupled to the terminal joint guide means. For this purpose, the lower movable Gelenkspfannenhälfte have a window opening through which a arranged on the inner bottom side of the wiper head projection penetrates in a pressing gestattenden alignment of the guide means in a recess corresponding to this alignment at the connection joint in the depressed position of the connection joint.

In a further development, a projection arranged on the inner bottom side of the wiper head in a press-preventing alignment of the guide device on the connecting joint can strike in such a way that the execution of the adjusting movement of the connecting joint is prevented. So it can be ensured that in a normal cleaning operation with the usual angular position of the hand-held suction tube, the terminal strips are not triggered unintentionally by the connection joint and the wiper dissolves unintentionally.

The connection joint can be latched by a pivoting movement in the depressed position in which the terminal strips are in the open position. Thus, the terminal strips can be fixed in their open positions, for example, to make soiling or blockages in the area of the suction mouthpieces with open terminal strips, without the terminal strips snap back automatically due to their spring bias in the closed position. For latched holding the terminal strips in the open position, therefore, arranged on the inner bottom side of the wiper head projection on a Vorsprungsrastnase which engages in the depressed and pivoted position of the connection joint an undercut at the connection joint.

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. As an alternative to a ball joint, the connection joint for the guide device can also be connected to the floor nozzle by means of a universal joint, for example. If the floor nozzle is connected via a universal joint to a pipe of a vacuum cleaner, the universal joint makes it possible for the user to move the floor nozzle according to the invention in all directions. The universal joint consists of a first partial joint and a second partial joint. The first part of the joint is formed by two attachment tabs of the floor nozzle and two nozzle-side intermediate link plates and has a degree of freedom for pivoting the intermediate joint relative to the floor nozzle. The fastening tabs are attached to a housing part of 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 an intermediate joint tongue. At one end of the intermediate joint opposite the nozzle-side intermediate joint straps, two further tube-side intermediate joint straps are provided. The nozzle-side intermediate link plates can be injection-molded with the tube-side intermediate link plates as a one-piece intermediate joint made of plastic or bent from a sheet metal part. The tube-side intermediate link plates are rotatably connected to two nozzle tabs. Depending on a tube-side intermediate link plate is connected by means of a rotary connection with a nozzle flap. The nozzle tabs are connected to a pipe socket 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 tube a flexible piece of hose is arranged in the universal joint. The flexible hose piece is preferably formed as a plastic corrugated hose, which can perform all joint movements of the universal joint with. A suction air flow is passed through the flexible hose section located in the center of the universal joint. Alternatively, the universal joint can also be produced in one piece with the aid of the assembly injection molding process, so that a secure backlash-free connection is created.

Another variant for a joint connection provides a cross-sectionally T-shaped hollow tube, which is made of a flexible material. This T-tube piece can be made of an elastomer or of a suitable thermoplastic and, for example, be designed as a bellows. The T-shaped hollow tube connects directly the floor nozzle with the pipe socket for receiving the guide device. The T-shaped hollow tube may be glued or molded to the respective nozzle ends. An embodiment of the invention is described with reference to a floor nozzle exemplified in Figures 1 to 7. FIGS. 8 and 9 describe two variants of the first embodiment.

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 removed housing shell with terminal strips in a closed position.

Figure 3 is a perspective view from above of the floor nozzle of Figure 1 with removed housing shell with terminal strips in an open position.

Figure 4 is a view in cross section with the terminal strips in an open position according to Figure 3;

Figure 5 is a view in cross section with the terminal strips in a closed position according to Figure 2;

FIG. 6 shows a perspective view of a movably mounted joint half of a floor nozzle according to FIG. 1;

FIG. 7 is an exploded view of the movably mounted joint half of FIG. 6 and a connecting joint;

Figure 8 is a perspective view of a second variant of a floor nozzle according to the invention, in which the ball joint is replaced by a universal joint;

Figure 9 is a perspective view of a third variant of a floor nozzle according to the invention, in which the ball joint is replaced by an elastic T-tube. 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 a rear in the sliding direction of the floor nozzle, shown in Figure 1 right Saugkanalmundstück 3 are mounted on the floor dienstüse. 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, attached to the wiper support 4 position of the wipe 5 are the front Saugkanalmundstück 2 and the rear Saugkanalmundstück 3 in a closed position in which the wipe 5 is held flat against the underside of the wiper support 4. 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 rotatability about the axis of rotation 21 17, a plurality of distributed over its circumference inwardly directed latching hooks 22, which engage in an outwardly directed circumferential latching groove 23 at a terminal 24 of the joint ball 19.

In Fig. 2, the floor nozzle of Fig. 1 is shown in a perspective view. The floor nozzle is shown with the housing shell 1 removed. At the front Saugkanalmundstück 2 a first terminal block 200a is attached. At the rear Saugkanalmundstück 3, a second terminal block 200b is attached. Both terminal strips 200a and 200b are in a closed position, in which the opposite longitudinal edge portions 6 and 7 of the wipe 5 are clamped to the wiper means carrier 4. The clamping of the opposite longitudinal edge portions 6 and 7 takes place between the wiper means carrier 4 and in each case one clamping bars 200a, 200b. The attached to the Saugkanalmundstücken 2 and 3 terminal strips 200a, 200b can be swung out with this, as indicated in Figure 1 by the arrow in an open position. The terminal strips 200a, 200b in the open position are explained in more detail with reference to FIG. For a pivotable mounting of the terminal strips 200a and 200b and the Saugkanalmundstücke 2 and 3, these holding arms 201 a and 201 b on. Each terminal strip 200a, 200b or each Saugkanalmundstück 2, 3 preferably has two holding arms 201 a, 201 b. Each holding arm 201 a, 201 b extends from the Saugkanalmundstück 2, 3 in the region of a Haltearmansatzes 214 a, 214 b in a direction obliquely upward and then passes into a central Haltearmabschnitt 215 a, 215 b, which aligned in the closed position substantially horizontally is. At its projecting Haltearmende 216 a, 216 b are each a guide pin 202 a, 202 b attached. Each guide pin 202a, 202b extends at a right angle to the longitudinal extent of the holding arms 201a, 201b and points inwards in the direction of an associated guide slot 203a, 203b. The guide slots 203a, 203b are arranged on a hood 155 of the central plate 154 and preferably formed integrally therewith. In the closed position shown in Fig. 2, the guide pins 202a, 202b are located at an inside upper end within the guide slot 203a, 203b. Consequently, the holding arms 201 a, 201 b can not only rotate about the axis of the guide pins 202 a, 202 b, but are longitudinally displaceably guided along a translatory path along the guide slot 203 a, 203 b. At a distance from the guide pins 202a, 202b, a pivot pin 217a, 217b is arranged obliquely below the guide pins 202a, 202b in FIG. Between the guide pins 202a, 202b and the pivot pin 217a, 217b is each a slide 218a, 218b of an intermediate lever 204a, 204b. The slideways 218a, 218b are cam-shaped to the intermediate lever 204a, 204b formed and have a T-shaped cross section, by means of which the holding arms 201 a, 201 b are guided on both sides, so that they can perform a reciprocating motion through which the Terminal strips 200a, 200b and the Saugkanalmundstücke 2, 3 between the closed position of FIG. 2 and the open position of FIG. 3 can be moved back and forth. To carry out its own pivoting movement, the intermediate levers 204a, 204b each have a bearing eye 219a, 219b. Each bearing eye 219a, 219b is mounted on a hinge pin 220a, 220b, so that the intermediate levers 204a, 204b are rotatably mounted about an axis of the hinge pins 220a, 220b. The hinge pins 220a, 220b are provided on the central plate 154 and preferably formed directly on it. Each two intermediate levers 204a, 204b are pivotally mounted mirror-symmetrically to each other and thereby perform a scissor-like synchronous movement. This scissor-type synchronous movement is triggered by a dog 205 fixed to a pressure plate 221 which reciprocates from an upper position as shown in FIG. 2 to a lower position as shown in FIG. 3 in a vertical direction is mobile. To the pressure plate 221, a lower movable joint half 18b of the joint cup 18 is formed. The Gelenkspfannenhälfte 18b carries the joint ball 19 of the connection joint 16. Due to the coupling elements just described can be pivoted by pressing the connecting joint 16 attached to the Saugkanalmundstücken 2 and 3 terminal strips 200a, 200b from a closed position to an open position. The coupling elements thus consist in the embodiment shown of the joint ball 19 of the connection joint 16, the pressure plate 221 with the lower movable joint half 18b and the driver 205, and the intermediate levers 204a, 204b and the holding arms 201 a, 201 b. Thus, the terminal strips 200a, 200b are held in the closed position under spring bias, a torsion spring 206 is inserted between the two each mirror-symmetrically mounted to each other pivotally mounted intermediate lever 204a, 204b. The torsion spring 206 has a helical torsion spring coil 222 to which two wire legs 223a, 223b connect, at the ends of which is a perpendicular bent spring hooks 224a, 224b. Each spring hook 224a, 224b engages a hook eye 225a, 225b at an upper end of each intermediate lever 204a, 204b. By means of the torsion spring 206, the hook eyes 225a, 225b spread apart, so that the intermediate lever 204a, 204b are forced into their scissor-like closed position. At the opposite The ends of the intermediate levers 204a, 204b abut the end-side forceps syringes 226a, 226b on a stop cam 227 in the closed position. The stop cam 227 is formed directly on the central plate 154.

In Fig. 3, the floor nozzle of Fig. 1 is shown in a perspective view. The floor nozzle is shown with the housing shell 1 removed. Both terminal strips 200a and 200b are in an open position, in which the opposite longitudinal edge portions 6 and 7 of the wiping means 5 are exposed and the wiping agent can be detached from the wiping means carrier 4. The terminal strips 200a and 200b, which are in the open position, are swung out via the suction channel mouthpieces 2 and 3 which are pivoted upwards. The holding arms 201 a, 201 b are rotated in a clockwise direction relative to the position shown in FIG. 2 and are positioned offset from the position shown in FIG. 2 downwardly and outwardly. This offset position is achieved via the translational movement which is guided by the guide slot 203a, 203b. FIG. 3 shows how the guide pins 202a, 202b of the holding arms 201a, 201b in the guide slot 203a, 203b are offset obliquely downward and release a section of the channel 228 of the guide slot 203a, 203b. The pivoting of the holding arms 201 a, 201 b is triggered by the scissor-like opened intermediate lever 204a, 204b, which are pivoted by means of their bearing eye 219a, 219b to the hinge pin 220a, 220b of the central plate 154 outwardly pivoted. At the same time, the slide tracks 218a, 218b press out the holding arms 201a, 201b at their pivot pins 217a, 217b in the manner of a cup. The scissor-type intermediate levers 204a, 204b are opened by the downwardly driven driver 205. In Fig. 3 it can be seen that the driver 205 is mounted in a driver guide 229, which allows a vertical movement of the driver 205. The driver guide 229 is inserted in the hood 155 of the central plate 154 as a vertical slot. Through the vertical slot of the driver guide 229 protrudes a connecting member 230 which connects the driver 205 with the lower movable joint half 18 b of the joint cup 18. It can be seen that the joint ball 19 of the connection joint 16 with respect to the closed position shown in FIG. 2 in the open position shown in FIG. 3 is in a lower position than in FIG. By comparing FIGS. 2 and 3, it can be seen that, by pressing down the connection joint 16, the terminal strips 200a and 200b are pivoted into the open position, in which they release the wiping means 5. The torsion spring coil 222 of the torsion spring 206 supports on the top of the stop cam 227. In Fig. 4, the floor nozzle is shown in a view in cross section with the clamping bars 200a and 200b in an open position according to Figure 3. The connection joint 16 with the receiving socket 17 has already been described in detail to Fig. 1. In the following, the features are described that are provided for the functions that allow or prevent opening or closing of the terminal strips 200a, 200b, as well as make it possible to determine the terminal strips 200a, 200b in an open position.

4 shows the connection joint 16 in a position in which the clamping strips 200a, 200b are pivoted into the open position, that is to say a pivoting of the clamping strips 200a, 200b is permitted. The connection joint 16 has the joint ball 19. The hinge ball 19 is supported between the lower movable hinge half 18b and the upper fixed hinge half 18a provided on the shell 1. By means of the joint pan halves 18a and 18b, the connection joint 16 is tiltably and pivotally mounted on the floor nozzle. Due to the lower movably mounted hinge half 18b, the connection joint 16 can also be pressed down in a vertical direction. By pressing the connection joint 16 downward, the terminal strips 200a, 200b are pivoted to the open position. The lower movable joint half 18b has for this purpose a window opening 207, through which a projection 209 can penetrate. On the inner bottom side 208 of the mop head, the projection 209 is arranged. The pressing of the connection joint 16 is permitted in the orientation of the connection joint 16 shown in FIG. 4. Via a recess 210 corresponding to this alignment at the connection joint 16, the projection 209 penetrates in the depressed position of the connection joint 16 as shown.

The connection joint 16 is locked in the lower position shown by a pivoting movement, as shown in FIG. 4 counterclockwise. This pivotal movement is possible only in the depressed position of the connecting joint 16. In the latched position, the terminal strips 200a, 200b are in the open position shown. For the latched holding of the terminal strips 200a, 200b in the open position, the protrusion 209 arranged on the inner bottom side 208 of the mop head has a projection latching lug 211 which, in the depressed and pivoted position of the connection joint 16, engages behind an undercut 212 on the connection joint 16. The projection 209 disposed on the inner bottom side 208 of the wiping head strikes against the press-preventing alignment of the guide means at the terminal joint so as to prevent the movement of the connecting link 16 from occurring and not open the terminal bars 200a, 200b. If the joint ball 19, for example, pivoted very far in the clockwise or counterclockwise direction relative to the position shown in FIG. 4, then the recess 210 at the connection joint 16 is no longer aligned with the window opening 207 and the projection 209. If now the connection joint 16 is pressed down , hits a closed surface of the joint ball 19 on the top surface 231 of the projection 209 and the connection joint 16 can not be moved further down. In a pending on the top surface 231 of the projection 209 position of the connection joint 16, the terminal strips 200a, 200b are still in the closed position in which the wiper means 5 is held on the wiper means carrier 4.

In Fig. 5, 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. Depending on a sealing lip 65a and 65b is inserted 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 directly sucked out of the wiping means 5 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. Preferably, the sealing lips 65a and 65b to increase the sealing and cleaning effect as double lips, as shown in Fig. 5, formed.

6 shows a perspective view of a movably mounted joint half 18b. The hinge half 18b is formed like a hollow sphere and forms the pressure plate 221 as described in FIG. At two diagonally opposite ends in each case a driver 205 is formed. Each driver 205 is above the connecting member 230 connected to the pressure plate 221 and the Gelenkspfannenhälfte 18 b. The driver 205 is movably supported up and down between the two hinge pins 220a and 220b. On the hinge pins 220a and 220b, the intermediate lever 204a and 204b shown in Fig. 2 and Fig. 3 are attached. The hinge pins 220 a and 220 b are integrally formed on the central plate 154. The hollow spherical segment-shaped joint socket half 18b has the window cutout 207. The window opening 207 is introduced into the plane of the hollow spherical segment-shaped joint half 18b and has a rectangular contour. At this rectangular contour, the joint ball 19 shown in Fig. 7 is guided.

In Fig. 7 is an exploded view of the movably mounted Gelenkspfannenhälfte 18 b and the joint ball 19 of the connection joint 16 is shown. The joint ball 19 has the recess 210 adapted to the window cutout 207 of the movable joint half 18 b. The recess 210 has a rectangular edge bead 232. The edge bead 232 has a depth related to the orientation in FIG. 7, which corresponds to the depth of the window cutout 207, so that the joint ball 19 in the movable joint half 18b is guided almost free of play. The width of the edge bead 232 has a width that is significantly smaller than the width of the window opening 207, so that the joint ball 19 in this direction can perform a pivoting movement within the movable joint half 18 b. The projection latching lug 21 1 of the articulation ball 19 on the left in FIG. 7 can latch behind the undercut 212 of the projection 209 in a latched position. Due to the rectangular contours of the window opening 207 and the engaging edge bead 232, a rotation of the joint ball 19 is hindered by a direction perpendicular to the plane of the window opening 207 direction and, for example. Only four offset by 90 ° to each other oriented rotational positions possible.

As shown in FIG. 8, as an alternative to the ball joint described in FIGS. 1 to 7, the connection 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 302a, 302b 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 attachment tabs 302a, 302b are attached to a housing part 31 1 of the floor nozzle, but may also be integrally connected to the floor nozzle. A respective fastening tab 302a, 302b is connected by means of a rotary joint 306 to a nozzle-side intermediate joint tongue 304a, 304b. Two further tube-side intermediate link plates 305a, 305b are provided on an end of the intermediate joint 303 opposite the nozzle-side intermediate link plates 304a, 304b. The nozzle-side intermediate link plates 304a, 304b can be produced 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 tube-side intermediate link plate 305 a, 305 b is connected by means of a rotary joint 306 with a nozzle tab 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 hose piece 308 is arranged in the universal joint. The flexible tube piece 308 is preferably formed as an existing plastic corrugated tube, which can perform all joint movements of the universal joint with. 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 306 can be converted by means of suitable coupling means into a movement of the clamping bars 200a, 200b.

Fig. 9 shows the variant in which the ball joint is replaced by an elastic T-tube. This hollow tube 310 has a transverse piece 312 arranged transversely to the main sliding direction of the nozzle in a front region. At a right angle to the cross piece 312, a longitudinal piece 313 connects. The longitudinal piece 313 extends counter to the sliding direction of the floor nozzle away from the crosspiece 312. By virtue of the T-shaped cross-section, bending of the pipe socket 309 or the guide device, ie a suction pipe of a vacuum cleaner, is easily possible in the opposite direction to the sliding direction, since in such a bending direction a section of the longitudinal piece 313 can buckle with little effort. On the other hand, a bending of the pipe socket 309 from the vertical in the sliding direction is not possible, since in this case the section of the longitudinal piece 313 is stretched, ie stretched, and thus the pipe socket 309 is prevented from bending. Of the same is a bending in a 45 ° direction, which is possible between the orientations of cross piece 312 and 313 longitudinal piece with little effort. Bending of the elastic T-tube can be converted into a movement of the clamping bars 200a, 200b by means of suitable coupling means.

Claims

claims 1. Wiper device for hard floors with a mop head, which has a holder for a wiper means (5) and a connection joint (16) for a guide device for moving the mop head, characterized in that the holder can be opened and closed terminal strips (200a, 200b ), which for clamping the Edge portions (6, 7) of the wiper means (5) are formed and the connection joint (16) is mounted on the mop head, so that by actuating the connection joint (16) an adjusting movement for performing opening and / or closing movements of the terminal strips (200a, 200b) is triggered. 2. Wiper device according to claim 1, characterized in that the opening movements of the terminal strips (200a, 200b) by vertical pressing of the connection joint (16) are triggered downwards. 3. Wiper device according to claim 1 or 2, characterized in that the connection joint (16) for converting its adjusting movement in the opening and / or closing movement with the terminal strips (200a, 200b) is mechanically coupled. 4. Wiper device according to claim 3, characterized in that the clamping strips (200a, 200b) are guided in guide slots (203a, 203b) of the mop head. 5. Wiper device according to claim 3 or 4, characterized in that the connection joint (16) has a couplable with the guide means ball joint (19) between a fixed in the mop head upper Gelenkpanelfhälfte (18 a) and a movably mounted in the mop head lower Gelenkpanelfhälfte (18b) is guided and by pressing the joint ball (19) against the lower movable Gelenkspfannenhälfte (18b) at least one associated with this Gelenkspfannenhälfte (18b) driver (205) is actuated, through which the terminal strips (200a, 200b) are opened. 6. Wiper device according to claim 5, characterized in that the clamping strips (200a, 200b) via intermediate lever (204a, 204b) are actuated, which are preferably pivotally mounted in the mop head and a movement of the driver (205) of the lower movable Gelenkspfannenhälfte ( 18b) transferred to the terminal strips (200a, 200b). 7. Wiper device according to claim 6, characterized in that two adjacently arranged intermediate lever (204a, 204b), the different terminal strips (200a, 200b) actuate, by means of a common driver (205) are actuated. 8. Wiper device according to claim 1 to 7, characterized in that the clamping strips (200a, 200b), the intermediate lever (204a, 204b) or the lower movable Gelenkspfannenhälfte (18b) are spring-biased in the closed position of the terminal strips (200a, 200b). 9. Wiper device according to claim 1 to 7, characterized in that the mop head for pressing the joint ball (19) is formed only in a substantially vertical orientation of the at the connecting joint (16) coupled guide means. 10. Wiper device according to claim 9, characterized in that the lower movable hinge half (18b) has a window opening (207) through which a arranged on the inner bottom side of the wiper head projection (209) in a pressure-permitting alignment of the guide means in a die- corresponding alignment recess (210) at the connection joint (16) in the depressed position of the connecting joint (16) penetrates. 1 1. A wiper device according to claim 9 to 1 1, characterized in that arranged on the inner bottom side of the wiper head projection (209) in a pressure-preventing alignment of the guide means at the connection joint (16) so abuts so that the execution of the adjusting movement of the connecting joint (16) is prevented. 12. Wiper device according to claim 5 to 1 1, characterized in that the connection joint (16) by a pivoting movement in the depressed position in which the terminal strips (200 a, 200 b) are in the open position, can be latched. 13. Wiper device according to claim 12, characterized in that the latched holding of the clamping strips (200a, 200b) in the open position is at the inner Bottom side of the wiper head arranged projection (209) has a Vorsprungsrastna- se (21 1), which engages in the depressed and pivoted position of the connection joint (16) has an undercut (212) on the connection joint (16).