Flat wiping device for cleaning station having vertical orientation, and cleaning station

Abstract

The invention relates to a flat wiping device (1) for a cleaning station having a vertical orientation, comprising a carrier plate (2) with a wiping cover and a lever (3) which is connected to the carrier plate (3) via a joint-like joint (4), the carrier plate (2) with the wiping cover being pivotable about a pivot axis from a wiping position into a wringing position, the carrier plate (2) has a wiping position, in which the carrier plate (2) with a downwardly directed wiping cover is placed flat, and a wringing position, in which the carrier plate (2) is oriented parallel to the lever (3), and wherein a mechanism is provided by means of which the carrier plate (2) with the wiping cover is automatically rotated from the wiping position into the wringing position when the lever (3) is lifted.

Description

Technical Field

[0001] The invention relates to a flat wiping device for a cleaning station with a vertical orientation, comprising a carrier plate with a wiping cover and a rod, which is connected to the carrier plate via a universal joint, wherein the carrier plate with the wiping cover can be pivoted about a pivot axis from a wiping position, in which the carrier plate with the wiping cover pointing downward lies flat, into a squeeze position, in which the carrier plate with the wiping cover is oriented parallel to the rod.

[0002] The invention also relates to a cleaning station having such a flat wiping device. Background Art

[0003] A flat wiping device of this type is known from CN 107456179 B. In the document, a flat wiping device for a cleaning station with a vertical orientation is described. In this cleaning station, the flat wiping device is introduced into a vertical squeezing funnel together with a carrier plate with a wiping cover flipped at a rod for squeezing in a vertical position. Therefore, a flat wiping device of this type has a carrier plate, to which the wiping cover can be placed. The carrier plate is connected to the rod via a universal joint. In order to squeeze, the rod is placed in a vertical position parallel to the carrier plate and fixed in the position by means of a suitable fixing device. In one embodiment, the fixing device is composed of a longitudinally movable pressure element arranged in the rod, which is pressed against the outer side of the hinge formed by the arch of the universal joint by means of a spring. With the help of the arrangement, the carrier plate should be fixed not only in the squeezing position but also in the wiping position. In a further development of the positioning device, the hinge surface has a flattened section in each case in the extrusion position and in the wiping position in order to form a flat bearing surface for the pressure element. In addition, the apex of the hinge can also have a groove into which a corresponding rib on the pressure element engages in the wiping position in order to securely fix the rod in said position.

[0004] A disadvantage of this type of flat wiping device is that the carrier plate must be rotated from the wiping position into the squeezing position using an expenditure of physical effort. Summary of the invention

[0005] The object of the invention is to improve a flat wiping device of this type so that the carrier plate with the wiping cover can be easily and comfortably rotated into a wringing position parallel to the rod without the user having to perform manual labor. Another object of the invention is to provide a cleaning station with such a flat wiping device.

[0006] This object is achieved by means of a flat wiping device according to claim 1 and a cleaning station according to claim 14. Advantageous embodiments are described in the dependent claims.

[0007] According to the present invention, in a flat wiping device for a cleaning station with a vertical orientation, the flat wiping device comprises a carrier plate with a wiping cover and a rod, wherein the rod is connected to the carrier plate via a universal joint, wherein the carrier plate with the wiping cover can be pivoted about a pivot axis from a wiping position to a squeeze-out position, in which the carrier plate with the wiping cover pointing downward is placed flat, and in the squeeze-out position, the carrier plate with the wiping cover is oriented parallel to the rod, and a mechanism is provided by which the carrier plate with the wiping cover automatically rotates from the wiping position to the squeeze-out position when the rod is raised.

[0008] In the sense of the invention, “automatically” means that the carrier plate is rotated from the wringing position into the wiping position solely by the action of the mechanism without direct manual action on the carrier plate or by a manually operated lever or an electric drive or the like.

[0009] The mechanism preferably acts mechanically.

[0010] According to a preferred embodiment of the present invention, the mechanism comprises an outer contour associated with the universal joint and a longitudinally displaceable elastic pressure element cooperating with the outer contour, wherein the longitudinally displaceable elastic pressure element is associated with the end of the rod.

[0011] The rod end and the universal joint with the outer contour are fixed via an articulated connection in the radial spacing from the pivot axis for pivoting from the wiping position to the squeeze position. Thereby, the outer contour of the universal joint is a kind of sliding groove for a longitudinally movable elastic pressure element. Preferably, the longitudinally movable elastic pressure element is placed on the outer contour under elastic prestressing. Elastic prestressing means that the elastic pressure element is pressed into the following degree in each angular position of the rod so that the pressure element applies a counterpressure to the outer contour of the universal joint. Therefore, the outer contour extends in the plane of the pivoting movement of the rod when pivoting from the wiping position to the squeeze position. As the angular position of the rod changes with respect to the pivot axis perpendicular to the plane, the elastic pressure element is guided along the outer contour and moves in the direction of the rod according to the radial spacing of the outer contour and the pivot axis. Here, the elastic pressure element is pressed into with different strengths. The present invention utilizes the said effect.

[0012] It has thus surprisingly been shown that an automatic rotation of the carrier plate with the wiping cap from the wiping position into a parallel position relative to the rod can be achieved in a simple manner by a corresponding design of the outer contour of the cardan-like joint.

[0013] Preferably, the outer contour is associated with the outer surface of the joint head of the universal joint, which extends upward toward the rod end. Particularly preferably, the longitudinally displaceable elastic pressure element is placed on the outer surface of the joint head under elastic prestressing.

[0014] According to another preferred embodiment of the invention, the carrier plate has a longitudinal direction and a transverse direction, and the universal joint has a lower joint element associated with the carrier plate, to which an intermediate joint element is articulated by means of a pivot axis in the longitudinal direction, and an upper joint element associated with the rod, wherein the upper joint element is articulated by means of a pivot axis in the transverse direction to the intermediate joint element, wherein the joint head is associated with the intermediate joint element. In this embodiment, the pivot axis for pivoting from the wiping position into the squeezing position is oriented in the transverse direction of the carrier plate.

[0015] Typically, the pivot axis for pivoting from the wiping position into the wringing position can extend both in the longitudinal direction relative to the carrier plate with the wiping cover and in the transverse direction relative to the carrier plate with the wiping cover. In the case of a carrier plate with a greater longitudinal extension than the transverse extension, the pivot axis is typically in the transverse direction, so that the carrier plate with the wiping cover is oriented with its greater longitudinal extension parallel to the rod and can be introduced into the wringing station in the vertical position.

[0016] Preferably, the outer contour has a vertex on the side facing the rod end when the rod is oriented vertically, and extends downward from the vertex at least on one side in the direction of the pivoting movement of the rod from the wiping position into the squeeze position in a curved path up to an angle of approximately 90° with respect to a vertical line through the vertex. An angle of 90° corresponds approximately to a parallel orientation of the carrier plate and the rod.

[0017] The outer contour as a link guide can extend from the apex only toward one side. However, it is preferred that the outer contour is designed symmetrically on both sides.

[0018] It has been found that outer contours are particularly suitable in which the radial distance of the outer contour from the pivot axis decreases continuously from a predetermined angle downward to an angle of approximately 90° with respect to a perpendicular line through the apex.

[0019] As will be described further below, the predefined angle is the angle from which the carrier plate with the wiper cap should automatically pivot upwards into the squeeze-out position, ie into a parallel position relative to the rod, when the rod is raised. The angle is freely selectable.

[0020] Calculations have shown that the carrier plate can be pivoted very reliably into a parallel position relative to the rod if, starting from a predefined angle with respect to a perpendicular through the vertex up to an angle of approximately 90°, for each point on the outer contour at a radial spacing r from the pivot axis, the angle between the tangent at the outer contour and the perpendicular at said point to the radial spacing r is ≥ arctan(μ), where μ is between 0.1 and 0.9, preferably between 0.3 and 0.5. This angle is also referred to below as the limiting angle. This effect is maintained even with slight deviations from the angle calculated according to the above formula and only deteriorates with increasing deviations.

[0021] The above rule states that the limit angle remains constant or increases from a preset angle as the angle about the vertical line through the vertex increases. Thus, even when the distance between the reference point on the outer contour and the pivot axis decreases, the limit angle does not decrease, but remains constant or increases.

[0022] Particularly good sliding properties from the wiping position into the squeezing position are obtained if the outer contour is selected such that the limiting angle increases with increasing angle with respect to a perpendicular line through the apex.

[0023] According to another preferred embodiment of the invention, the outer contour has a constriction in the angular range of about 90°, into which the elastic pressure element engages in a parallel position of the carrier plate relative to the rod in order to fix the rod in the squeeze-out position. If a constriction is present, the above-mentioned conditions do not apply to the shaping of the outer contour up to an angle of approximately 90°, but only to the shaping of the outer contour up to the beginning of the constriction.

[0024] The above-mentioned values ​​μ also refer to the sliding friction between the joint element carrying the outer contour and the pressure element. Both components are usually made of plastic, for example POM, PP or PA. For most suitable plastic pairings, the value μ is between 0.1 and 0.9, preferably between 0.3 and 0.5. Without limiting the generality, this results in limit angles in the range of 13° and 31°, for example.

[0025] In another preferred embodiment of the invention, the outer contour is flattened around the apex, particularly preferably within a range of approximately + / -15° relative to the vertical, in order to form a flat support surface for the pressure element. This stabilizes the carrier plate with the wiping cap against tilting in the wiping position.

[0026] If the distance a of the center of gravity of the carrier plate with the wiping cap from the pivot axis for pivoting from the wiping position into the wringing position is large, it may be advantageous to compensate for the torque exerted by gravity on the carrier plate with the wiping cap, in particular when the rod is oriented vertically, by a suitable modification of the outer contour. Calculations show that the carrier plate can be reliably pivoted into the wringing position even at large distances a if the following formula is satisfied for the outer contour at each contour point:

[0027] a·m·9.81m / sec 2 sin(β) <F β ·r β ·cos(α β )·sin(α β )

[0028] where α = arctan(μ),

[0029] where a is the distance of the center of gravity of the carrier plate with the wiping cap from the pivot axis for pivoting from the wiping position into the wringing position,

[0030] m is the mass of the carrier plate with the wiper cover,

[0031] β is the angle between the radius from the pivot axis to the contour point and the perpendicular line through the vertex of the outer contour,

[0032] r β is the radius relative to the contour point on the outer contour at angle β

[0033] And μ is between 0.1 and 0.9, preferably between 0.3 and 0.5.

[0034] According to another preferred embodiment of the invention, the elastic pressure element is arranged inside the rod and can be longitudinally displaced there. If a yoke is used as the upper joint element, the fork of which surrounds the outer contour, for example the outside of the joint head, on both sides and thus laterally limits the movement of the elastic pressure element, a particularly reliable guidance on the outer contour can be achieved.

[0035] Preferably, the predetermined angle is selected so that it corresponds approximately to the extended arm length, so that the user can fold the carrier plate with the wiper cap upwards for squeezing or squeezing out with a slight lateral arm movement. It has been found that angles of <25° relative to the vertical, preferably in the range of about 8° to 18°, are particularly suitable for this purpose, since this range generally covers different heights of users well.

[0036] It is also preferred that the carrier plate with the wipe cover does not suddenly flip upward when the preset angle is reached, but only slides upward slowly when the carrier plate is slightly lifted. This prevents the carrier plate from flipping open unexpectedly in the corresponding inclined position of the rod during wiping. In addition to the geometric design of the outer contour of the joint head, the sliding friction between the mutually associated surfaces of the joint head and the pressure element is also responsible for the sliding speed. The higher the sliding friction, the slower the carrier plate rotates into a parallel position relative to the rod. The sliding friction can be set, for example, via a suitable material pairing of the two components. In addition, surface coatings and / or surface treatments (flattening, roughening, etc.) are also conceivable to influence the sliding friction.

[0037] Another controlled variable is the preload of the elastic pressure element, ie the force with which the elastic pressure element presses against the outer surface with the outer contour.

[0038] It has been found to be advantageous in practice to first determine the outer contour of the joint head towards the rod end in a given material pairing and then set the desired sliding properties via the preload of the elastic pressure element. A person skilled in the art can find a preload suitable for this by simple tests without inventive work.

[0039] Ideally, the preload of the spring is selected so that the carrier plate with the mopping cover does not undesirably tilt open due to its own weight and / or the slight pressure on the rod during mopping even when the predetermined angle is reached, but remains on the ground. If the carrier plate is then slightly lifted, it should slide into a parallel position.

[0040] For the elastic pressure element, all materials and arrangements that exhibit sufficient elastic deformation are considered. According to a preferred embodiment of the invention, the elastic pressure element comprises a pressure body placed on the outer contour and a spring element that exerts pressure on the pressure body. As a simple and cost-effective solution, a helical spring, in particular made of metal, is preferably used as the spring element. The pressure body can be made of plastic, for example, wherein the surface placed on the outer contour can be optimized with respect to the desired torque transmission. Preferably, the surface has a semi-cylindrical shape.

[0041] Preferably, without limiting the generality, the carrier plate has a greater longitudinal extension in the longitudinal direction than in the transverse direction. This corresponds to the common design of a carrier plate in a cleaning station with a vertical orientation. However, the invention can also be applied to flat wiping devices with a carrier plate with any geometric shape, in particular also to round flat wiping devices or those with a greater transverse extension.

[0042] According to the invention, the middle joint element has a joint connection to the lower joint element. A particularly simple construction results if the lower joint element is also designed in a fork-shaped manner and engages in a corresponding opening on the middle joint element.

[0043] Obviously, in order to achieve the effect according to the invention, the outer contour and the spring force of the elastic pressure element must be coordinated with the weight and geometry of the carrier plate with the wet wipe cap. A person skilled in the art can easily find suitable variables by simple experiments with the aid of the description in this specification without having to carry out creative work.

[0044] The cleaning station according to the invention with a vertical orientation has a tub, comprising at least one washing-off unit and at least one wringing unit and a flat wiping device according to the above description.

[0045] Whenever upper, lower, vertical or horizontal is mentioned in the present invention, the description relates to the flat wiping device in the wiping position, ie with a horizontally oriented carrier plate lying on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be described in detail below with reference to the accompanying drawings.

[0047] The accompanying drawings show:

[0048] Figure 1 A flat wiping device according to the invention is shown in a perspective view with a carrier plate and a lower region of a rod and a universal joint,

[0049] Figure 2 Shown in the enlarged view Figure 1 The universal joint of the flat wiping device in

[0050] Figure 3 Shown in side section Figure 2 The universal joint in the

[0051] Figure 4 The side section shows the carrier plate and the rod in parallel orientation. Figure 2 and Figure 3 The universal joint in the

[0052] Figure 5 a) and Figure 5 b) shows an intermediate joint element according to the invention in a perspective view and in a side section,

[0053] 6a) to 6e) show the movement sequence according to the invention when guiding the pressure element along the outer contour,

[0054] 7a) to 7e) show the movement sequence according to the invention when the carrier plate is automatically moved from a horizontal position into a vertical position,

[0055] 8 a ) to 8 i ) show the outer contours calculated according to the invention for different friction coefficients.

[0056] 9a), 9b) show the position of the angles α and β with respect to the outer contour according to the invention according to a schematic principle sketch (a), with an angle description according to the embodiment (b),

[0057] Fig.10 The schematic principle sketch shows a flat wiping device with a large distance a between the carrier plate and the pivot axis. DETAILED DESCRIPTION

[0058] exist Figure 1 1 shows a flat wiping device 1 according to the invention having a carrier plate 2, which can be connected to a wiping cover (not shown here). The wiping plate 1 according to the invention has a longitudinal direction and a transverse direction and a rod 3, which is connected to the carrier plate 2 via a universal joint 4. The universal joint 4 has, for example, a lower joint element 5 associated with the carrier plate and an upper joint element 7 associated with the rod 3, to which an intermediate joint element 6 is articulated by means of a pivot axis in the longitudinal direction and to which the upper joint element is articulated by means of a pivot axis 8 in the transverse direction.

[0059] According to a preferred embodiment of the present invention, Figure 2 The cardan-like joint element 4 is shown in detail on the carrier plate 2 (only a section is shown here). The lower joint element 5 is integrated into the carrier plate 2 without limiting the generality. The upper joint element 7 is also fastened to the lower end of the rod without limiting the generality. The upper joint element is designed, for example, in the form of a fork, wherein the two fork arms are articulated on the central joint element 6 by means of a pivot axis 8 in the transverse direction.

[0060] Figure 3 Shown in lateral longitudinal section Figure 2 In the embodiment shown, the carrier plate 2 is on the ground, and the rod 3 is shown by way of example in an inclined position relative to the vertical. The intermediate joint element 6 has a joint head 6a that projects upwards (see Figure 5 ), the outer side of the joint head with the outer contour 9 faces the lower end of the rod 3. In the lower end of the rod 3, for example, a longitudinally movable pressure element 10 is arranged, which is pressed against the outer contour 9 via a spring 11. The pressure element 10 is placed on the outer side with the outer contour 9 under pretension.

[0061] Figure 4 The cardan-like joint element is shown in the parallel position of the carrier plate 2 and the rod 3. It can be seen that according to another preferred embodiment of the invention, the pressure element 10 engages in the constriction 14 of the outer contour 9 of the joint head 6a and stabilizes the carrier plate 2 and the rod 3 in the squeeze-out position in this manner. The flattened top region 12 in the outer contour 9, by which the carrier plate 2 and the rod 3 are stabilized in the wiping position, can also be seen.

[0062] exist Figure 5 1 shows a perspective view a) and a lateral longitudinal section b) of an intermediate articulated element in a design according to the present invention. The lower connecting element 6b relative to the lower articulated element can be seen. The lower connecting element extends in the longitudinal direction of the carrier plate in the installed state and has openings on both sides for engaging the articulated fork. The articulated head 6a protrudes upward from the connecting element 6b. Without limiting the generality, the articulated head 6a is symmetrically configured toward both sides with respect to a vertical line passing through the vertex. The flattened area 12 around the vertex for stabilizing the flat wiping device in the wiping position and the constriction 14 for stabilizing the flat wiping device in a parallel position relative to the rod can be seen. In addition, the outer surface 6c with the outer contour 9 can be seen.

[0063] In FIG. 6a) to FIG. 6e), for Figures 2 to 4 The cardan-like joint in the figure shows by way of example the movement sequence from a vertical position of the carrier plate 2 to a parallel position relative to the rod 3 when guiding the pressure element 10 along the outer contour 9. For reasons of illustration, the carrier plate is shown here in a horizontal position, while the rod 3 changes its angular position. In practice, as can be seen from FIGS. 7a) to 7e), the carrier plate is tilted upward relative to the rod 3.

[0064] 7a) to 7e), according to a preferred embodiment of the present invention, the carrier plate 2 is first held on the ground due to its own weight when the rod 3 is tilted from the vertical, and then flipped upwards when the rod 3 is slightly lifted and the gravity is counteracted by the user.

[0065] 8 a ) to 8 i ) show how the outer contour of the outer surface of the joint head becomes increasingly steeper with increasing friction coefficient (μ*1.2=0.1, 0.2, . . . , 0.9). The outer contour is determined according to the formula in claim 3 .

[0066] FIG. 9a) shows in a schematic longitudinal section the limiting angle α at a contour point at a radial distance from the pivot axis at an angle β to a vertical line through the vertex. According to a preferred embodiment of the invention, the outer contour is designed so that the limiting angle α increases as the angle β increases. FIG. 9b) shows the arrangement according to FIG. 9a) with an angle description according to the following exemplary embodiment.

[0067] exist Fig.10 In the schematic diagram, the carrier plate 2 is shown vertically oriented parallel to the rod 3, wherein the center of gravity is at a distance a from the pivot axis. As a result, a torque acts on the carrier plate 2 with the wiper cap, which can be compensated by a suitable design of the outer contour as described above.

[0068] Example:

[0069] For the calculation of the embodiment, the following is the premise: a carrier plate with a dry wiping pad is proposed without limiting the generality. In practice, the weight of a damp or dripping wiping pad is included in the design of the outer contour. The weight of the carrier plate and the wiping pad is assumed to be approximately 180 g. This also corresponds to the actual value. During the calculation, the dimensions of the carrier plate in the longitudinal direction are approximately 32 cm and in the transverse direction are approximately 10 cm. At the shorter side, due to gravity, a torque of approximately 0.28 Nm acts on the carrier plate in a supporting manner. The torque must be sufficient to orient the plate parallel to the ground (see Figure 7c for this). If half the weight of the rod is also added, a weight of 340 g and a torque of 0.53 Nm are obtained.

[0070] The outer contour and the spring should interact so that, during a typical deflection of the lever from the vertical, during a lateral movement over an arm length of approximately 15°, a torque is generated that is smaller than that caused by gravity, so that the carrier plate with the wiping cap does not tilt up in the wiping position.

[0071] Therefore, taking a spring with a standard length of 64 mm as the basis for the calculation, the spring is compressed by 34 mm to produce the preload. This results in a spring force of approximately 47.6 N at a spring constant of 1.4 N / mm.

[0072] The outer contour depicted in FIG. 9 b) is determined with the aid of the formula in claim 7. The limiting angle of 22° is determined with the aid of the coefficient of sliding friction μ=0.33. FIG. 9 b) shows the contour of the joint head calculated in this way. By way of example, a limiting angle of 22° between the tangent and the perpendicular to the radius is plotted for an angle of 47.4° with respect to the perpendicular through the vertex of the joint head.

[0073] The angle of 47.4° corresponds to the deflection of the rod about the vertical when the wiper plate lies flat. The elastic pressure element pressing onto the outer contour at this point (without friction) generates a torque of approximately 0.17 Nm, which acts on the carrier plate.

[0074] As a result, the moment caused by the spring and the contour at this point is smaller than the moment produced by the weight, and the mop can still be handled very well with this deflection of the rod.

[0075] At an angle of 15°, a torque of approximately 0.23 Nm results, which is likewise much lower than the moment generated by the weight.

Claims

1. A flat wiping device 1 for a cleaning station with a vertical orientation, comprising a carrier plate 2 with a wiping cover and a rod 3, which is connected to the carrier plate 3 via a universal joint 4, wherein the carrier plate 2 with the wiping cover can be pivoted about a pivot axis from a wiping position to a squeeze-out position, in which the carrier plate 2 with the wiping cover pointing downwards lies flat, and in which the carrier plate 2 is oriented parallel to the rod 3, characterized in that A mechanism is provided by which the carrier plate 2 with the wiping cap is automatically pivoted from the wiping position into the squeezing position when the rod 3 is raised.

2. The flat wiping device according to claim 1, characterized in that The mechanism comprises an outer contour 9 associated with the cardan-like joint 4 and longitudinally displaceable elastic pressure elements 10 , 11 cooperating with the outer contour 9 and associated with the ends of the rod 3 .

3. The flat wiping device according to claim 2, characterized in that The outer contour 9 is associated with the outer surface of the joint head of the universal joint 4 which projects upward toward the rod end.

4. The flat wiping device according to claim 3, characterized in that The longitudinally displaceable elastic pressure elements 10 , 11 are placed under elastic pretension on the outer surface of the joint head.

5. The flat wiping device according to any one of claims 1 to 4, characterized in that The carrier plate has a longitudinal direction and a transverse direction, and the universal joint 4 has a lower joint element 5 associated with the carrier plate and an upper joint element 7 associated with the rod 3, an intermediate joint element 6 is hinged to the lower joint element by means of a pivot axis in the longitudinal direction, and the upper joint element is hinged to the intermediate joint element 6 by means of a pivot axis 8 in the transverse direction, wherein the joint head is associated with the intermediate joint element 4.

6. The flat wiping device according to any one of claims 1 to 5, characterized in that The outer contour 9 has a top region at the top and extends from the top region at least on one side in a curved path downward in the longitudinal direction of the carrier plate up to an angle of approximately 90° with respect to a vertical line through the apex.

7. The flat wiping device according to claim 4 or 6, characterized in that The distance of the outer contour from the pivot axis in the transverse direction decreases continuously downwards, at least starting from a predetermined angle with respect to a perpendicular through the apex, which corresponds to a predetermined lateral deflection of the lever, to an angle of approximately 90°.

8. The flat wiping device according to any one of claims 1 to 6, characterized in that From the preset angle up to an angle of approximately 90° with respect to the perpendicular through the vertex, for each point on the outer contour 9 having a radial spacing r from the pivot axis in the transverse direction, the angle between the tangent to the outer contour 9 at said point and the perpendicular at said point relative to the radial spacing r is ≥ arctan(μ×1.2), where μ is the coefficient of sliding friction of the material combination between the outer contour 9 and the mutually associated surfaces of the pressure element 10.

9. The flat wiping device according to any one of claims 1 to 7, characterized in that The outer contour 9 is flattened in the region around the apex.

10. The flat wiping device according to any one of claims 1 to 9, characterized in that The outer contour 9 has a constriction 14 in the angular range of about 90°, into which the elastic pressure elements 10 , 11 engage in a parallel position of the carrier plate 2 relative to the rod 3 in order to fix the rod 3 in the squeeze-out position.

11. The flat wiping device according to any one of claims 1 to 10, characterized in that The longitudinally displaceable elastic pressure elements 10 , 11 are guided within the rod 3 .

12. The flat wiping device according to any one of claims 1 to 11, characterized in that The upper joint element 7 is a joint fork.

13. The flat wiping device according to any one of claims 1 to 12, characterized in that The spring action is achieved by means of a helical spring. 14 . A cleaning station with a vertical orientation, comprising a tub, comprising at least one washing-off unit and at least one wringing unit and a flat wiping device according to claim 1 .

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