DE20122773U1 - Wiper device and flat wiper blade and wiper arm for this purpose - Google Patents

Abstract

Wiper device, in particular for wiping vehicle windows, with a drivable wiper arm (10) and with a on the wiper arm (10) can be arranged flat wiper blade (12), which is a squeegee (14) with one of the disc to be wiped facing wiper lip (16), two receiving the squeegee (14), strip-like elongated spring rails (20) and one with the spring rails (20) coupled connection element (24), wherein the connecting element (24) an open in the direction away from the disc recess (26) for receiving at least one, at the free end of a Wischarms (10) arranged bearing element (38), characterized characterized in that on the bearing element (38) has a rotatably mounted Sleeve element (28, 28a, 28b, 28c) is arranged, wherein the recess facing surface contour the sleeve element (28, 28a, 28b, 28c) at least partially complementary to the surface contour the recess (26, 26a, 26b, 26c) is formed.

Description

The The invention relates to a wiper device, in particular for wiping of vehicle windows, with a drivable wiper arm, with a on the wiper arm can be arranged flat wiper blade, which is a squeegee with a wiper lip facing the window to be wiped, two the squeegee receiving, strip-like elongated spring rails and a connecting element coupled to the spring rails, wherein the connecting element faces away in the disc Direction has open recess, for receiving at least a arranged at the free end of the wiper arm bearing element is provided. The bearing element is in particular as with the wiper arm rotatably connected, largely parallel to the disc and largely transverse to the longitudinal axis of Flachwischblatts extending bearing pin formed. Furthermore, you can the free end of the wiper arm bearing pin the bearing element form.

In a described wiper device, the band-like, elongated spring rails ensure optimum distribution of the wiper blade pressing force emanating from the wiper arm to the disk. For this purpose, the spring rails in the unloaded state, so if the wiper blade is not applied to the disc, bent accordingly and have a dependent, inter alia, on the curvature of the disc to be wiped curvature. The spring rails thus replaced the complex mounting bracket construction, as for example from the DE 15 05 397 has become known.

Generic wipers are from the DE 199 07 629 A1 known. A disadvantage of such wiper devices is that contact corrosion between the bearing element and the connecting element can occur in the region of the recess. A selection of materials which, while true to the loads acting on the bearing, can bring about additional contact corrosion. The touching, relatively moving bearing parts are also subject to high wear.

Of the The present invention is therefore based on the object, a To provide wiper device, which said disadvantages of the known prior art helps.

These Task is at a wiper device of the type described above Type according to the invention thereby solved, that on the bearing element rotatably mounted sleeve member is arranged, wherein the recess facing surface contour of the sleeve element at least partially complementary to the surface contour the recess is formed.

This has the advantage that the pivoting movement of the flat wiper blade relative to the wiper arm within a defined storage between the sleeve member and the preferably pin-shaped bearing element takes place. The material of the sleeve element is advantageously chosen so that it meets the demands to a bearing material is sufficient and also for corrosion reasons the Separation of the bearing element and the connecting element is used. Furthermore Is it possible, to reduce wear and tear Friction to lubricate the relatively moving bearing surfaces.

at an advantageous embodiment of the invention, the surface contour of the sleeve element an extending in the axial direction of the sleeve member circular cross-section on. This has the advantage that the sleeve element in any position in the corresponding complementarily formed Recess introduced can be. A faulty, to malfunction of the wiper device leader Mounting is therefore excluded.

at a further advantageous embodiment of the invention is provided that the surface contour of the sleeve element at least in sections has an area that faces one complementary surface contour the recess is designed to inhibit rotation. This will in the first place, that prevents an unwanted rotational movement between the connecting element and the sleeve element takes place. It is ensured that when pivoting the flat wiper blade relative to the wiper arm a relative movement exclusively between the ones provided components takes place. This contributes to a longer life the wiper device at.

advantageously, indicates the surface contour of the sleeve element additionally at least in sections an area that self-locating in a complementary surface contour the recess is formed. This will ensure that an incorrect mounting or joining of the wiper arm with the flat wiper blade is excluded. Rather, it ensures that the sleeve element automatic enters the intended position in the recess.

Such a rotation-inhibiting and / or self-locating region of the surface contour of the sleeve element has, in particular, an elliptical, triangular or trapezoidal cross-section. According to the respective cross-section or the respective area of the Hül Senelements the surface contour of the recess is complementary thereto. Embodiments of the sleeve element in which the force distribution between the flat wiper blade and the wiper arm over flat surfaces has proven particularly advantageous. As a result, high material loads, as they occur, for example, in line loads avoided. In particular, trapezoidal cross sections are suitable for the realization of such surface loads. The use of triangular or trapezoidal cross-sections also has the advantage that manufacturing tolerances due to the wedge-like adding components can be compensated.

According to the invention is still conceivable that between the bearing element and the sleeve element Storage means are provided to improve the quality of storage can. Such storage means can for example, at the two opposite openings of the sleeve element be rotatably mounted bearing ring elements. The use of such Bearing means has the advantage that for the bearing element materials without consideration the material of the sleeve element, and vice versa, can be used. The use of additional Storage means leads to a larger choice of materials of bearing element and sleeve element. Furthermore, a sealed storage with less friction and better dry running properties can be realized.

to Arrangement of the flat wiper blade on the wiper arm can be provided according to the invention be that the wiper device comprises a locking unit, by means of which the open recess of the connecting element the side facing away from the disc is closed. After that on the free end of the wiper arm arranged sleeve member for connection of the wiper arm with the flat wiper blade in the recess of the connecting element can be given over such a locking unit the flat wiper blade on the wiper arm be kept permanently swiveled.

advantageously, The locking element surrounds the connecting element largely. This has the advantage that the connecting element with associated bearing point before environmental influences protected becomes. In particular, impurities are prevented from accumulating, the deterioration of the pivotability of the flat wiper blade across from the wiper arm and thus lead to a deterioration of the wiping quality.

advantageously, can continue according to the invention be provided that the locking unit, the connecting element laterally um- and / or engaging behind guide webs, with cooperating on the connecting element existing guide grooves. About such guide grooves, the advantageously largely parallel to the wiper blade longitudinal direction run, the locking unit on the connecting element be deferred.

In addition, can the recess facing side of the locking unit such be formed, that the sleeve element is largely free of play halterbar in the recess. This will guaranteed that a wobbling or tilting of the sleeve member in the recess can not take place. In particular, a tilting of the wiper blade relative to the Wiper arm and about its longitudinal axis would be too a reduced wiping quality, to noises and to a higher one Wear leads.

to improved and more reliable mounting of the sleeve member In the recess can be inventively provided that the locking unit on the side facing the recess comprises a spring element, which is suitable for, which can be arranged in the recess sleeve member to apply a spring force. By the admission of the sleeve member with a force acting in the direction of the disc spring force is a backlash Arrangement of the sleeve element guaranteed in the recess.

Around to ensure, that the locking unit remains in its mounting position, can be provided according to the invention be that the spring element on the sleeve member facing side has at least one resilient survey, with a arranged on the sleeve member Deepening cooperates. When reaching the mounting position engages the survey into the depression. To the locking unit out of the mounting position or the survey out of the recess is an elevated one Effort required.

A Another embodiment of the invention provides that on the locking unit or on the spring element belonging to the locking unit a stop means is provided, which is temporary with a counter-stop means provided on the connecting element cooperates to unintentionally remove the locking unit from to prevent the connecting element. This is especially easy This way realizable that the at the locking unit Any existing spring tongue temporarily the function of the stop means and an existing on the connecting element anyway the ramp Function of the counter stop means takes over.

A Further embodiment of the invention provides that on the locking unit or on the locking element belonging to the spring element a locking means is provided, which is temporary cooperates with a counter-locking means provided on the connecting element, around the locking unit in a period in which the flat wiper blade not mounted on the wiper arm, in the open position on the connecting element to lock. These measures brings in particular a mounting relief with it, since the locking unit not before joining by wiper arm and flat wiper blade are first brought into the open position got to.

in the In connection with the measure described above, it is advantageous the already existing on the locking unit spring tongue temporarily the function of the locking means and one formed on the connecting element Locking recess takes over the function of the counter-locking means. The latching depression is preferably directly in the region of Connecting element is arranged, which, in the longitudinal direction of the flat wiper blade, to the center of the connecting element facing side connects to a connecting element ramp.

Further can be provided according to the invention that the spring element, the connecting element and engages behind guide webs having, with existing on the connecting element spring grooves interact. As a result, a secure guiding the locking unit on the Spring element opposite ensured the connecting element.

at a further embodiment The invention provides that on the connecting element, a projection or a recess is arranged, with one at the free End of the wiper arm arranged recess or a supernatant for swivel angle limitation of the flat wiper blade relative to the Wischarm cooperates. This avoids in particular that by a swinging motion of the flat wiper blade a release of the flat wiper blade by moving the locking unit can be done from the mounting position. It also prevents that the wiper improperly so can be folded on the disc that not the squeegee, but one end of the flat wiper blade or one at the end of the flat wiper blade attached cover or the side facing away from the wiper lip of the flat wiper blade strikes against the glass.

advantageously, is provided according to the invention, that the supernatant or the recess on the wiper blade side facing below the sleeve member is arranged on the wiper arm.

The The object mentioned at the outset is also characterized by one of the above described flat wiper blade as well as by one above described wiper arm solved.

Further advantageous embodiments and details of the invention are in the following description, in which the invention with reference to described in detail in the drawings embodiments and explained is.

It demonstrate:

1 a wiper device according to the invention in an exploded view;

2 - 5 various attachment possibilities according to the invention of the wiper blade to the wiper arm;

6 an enlarged section 1 ;

7a -C, different views of the wiper blade on the wiper arm or assembled and

8a -C, different pivot positions of the wiper blade on the wiper arm.

1 shows a wiper device according to the invention with a drivable wiper arm 10 and one on the wiper arm 10 at least conditionally pivotable flat wiper blade 12 , The flat wiper blade 12 includes a squeegee 14 with a wiper lip facing the window to be wiped 16 , On the wiper lip 16 opposite side has the squeegee 14 a spoiler-like approach 18 on. The wiper blade 12 further comprises two strip-like elongated spring rails 20 and two for location at the free ends of the spring rail 20 and the squeegee 14 provided cover caps 22 , The flat wiper blade 12 also sees a connecting element 24 in front, which in the assembled state, the two spring rails 20 holds. The connecting element 24 has a recess facing away from the disc in the open direction 26 on. In the assembled state of the wiper device, the recess serves 26 for receiving one on the wiper arm 10 rotatably mounted sleeve member arranged 28 , The wiper device also has a locking unit 30 on, which is used to lock the sleeve element 28 in the recess 26 is provided. Between the locking element 30 and the sleeve member 28 is on the locking element 30 a spring element 32 provided that is preferably made of a spring metal material.

The 2 - 5 show different ways of designing the connection of the connecting element 24 to the wiper arm 10 , Shown is the flat wiper blade 12 facing free end of the wiper arm 10 , The wiper arm 10 has in the end region two mutually parallel, extending in Wischarmlängsrichtung tabs 34 or side walls on. The two tabs 34 or side walls each have a through hole 36 on. The two through holes 36 lie in a line that is largely parallel to the disc and largely transverse to the longitudinal direction of the flat wiper blade 12 runs. The two through holes 36 are for receiving a bearing pin 38 intended. The bearing pin 38 is advantageously for rotationally fixed arrangement with the wiper arm 10 compressed or caulked. It would also be conceivable, instead of a continuous bearing pin 38 , on the mutually facing sides of the two tabs 34 Provide bearing pin. The journals could advantageously be integral with the free end of the wiper arm 10 be educated.

Furthermore, serves in the 2 - 5 the bearing pin 38 or the bearing pin for receiving the reference number 28a . 28b . 28c , and 28 designated sleeve member. The sleeve element 28a . 28b . 28c , and 28 is opposite the bearing pin 38 rotatably arranged. It sees a through hole 44 for receiving the bearing pin 38 in front.

The distance between the two tabs 34 or side walls is slightly larger than the width of the connecting element 24a . 24b . 24c and 24 , The two facing sides of the tabs 34 can therefore advantageously in connection with the opposite longitudinal sides of the connecting element 24a . 24b . 24c and 24 as contact and sliding surfaces during the wiping process or during a pivoting of the flat wiper blade 12 opposite the wiper arm 10 serve. Other guides are not required.

With regard 2 has the sleeve element 28a one in the axial direction of the sleeve member 28a non-changing circular surface contour. In the assembled state of the wiper device is the sleeve member 28a in the recess 26a of the connecting element 24a arranged. The U-shaped recess 26a extends transversely to the longitudinal axis of the flat wiper blade 12 , Has two parallel or largely parallel to each other extending side walls 40 as well as a semicircular ground 42 on. The recess 26a facing surface contour of the sleeve member 28a is complementary to the surface contour of the recess 26a , in particular to the surface contour of the ground 42 the recess 26a ,

The in the 2 embodiment shown has the advantage that a pivoting movement between the flat wiper blade 12 or its connecting element 24a and the wiper arm 10 between the sleeve element 28a and the bearing pin 38 takes place. For the sleeve element 28a is advantageously selected a material that meets the requirement of a bearing material and also for corrosion reasons, the separation of the bearing pin 38 and the connecting element 24a serves. To reduce wear and friction between the bearing pin 38 and the sleeve member 28a is a lubrication conceivable. In addition, due to the circular outer contour of the sleeve member 28a this in any position in the recess 26a of the connecting element 24a be introduced.

The in the 3 to 5 Embodiments shown differ from those in FIG 2 illustrated embodiment by specially trained sleeve elements 28b . 28c and 28 as well as associated recess 26b . 26c and 26 ,

The sleeve element 28b according to 3 has an area 46 on, which is largely elliptical in cross section. The recess 26b of the connecting element 24b sees you to the area 46 of the sleeve element 28b complementary, for positive reception of the sleeve member 28b suitable area 48 in front. In the assembled state is about the interaction of the areas 46 and 48 prevents the sleeve element 28b opposite the connecting element 24b can twist. As a result, a rotation inhibition of the sleeve member 28b opposite the connecting element 24b reached.

In the embodiment according to 4 finds a sleeve element 28c Use having a trapezoidal cross-section. The recess 26c of the connecting element 24c has wedge-shaped in the direction of the disc converging sidewalls 40 on. The angle with which the side walls 40 converging, corresponds to the angle with which the two sides facing away from each other 50 of the sleeve element 28c converge. In the assembled state is therefore the sleeve member 28c according to a wedge in the recess 26 of the connecting element 24c arranged.

In contrast to the embodiments according to 2 and 3 has the embodiment according to 4 the advantage of that between the wiper arm 10 and the connecting element 24 acting forces over the adjoining surfaces 50 and 40 be transmitted. Due to the even distribution of the acting loads over the surfaces 50 and 40 is the formation of voltage spikes on the adjacent Bautei avoided. In the embodiments according to 2 and 3 occur due to the rounded surface contours of the sleeve elements 28a and 28b and the complementarily formed with the surface contours of the sleeve elements 28a and 28b cooperating recesses 26a and 26b in practice relatively high line loads. These line loads result in comparison with the embodiments according to 4 and 5 to a faster wear of the components. This reduces the life of the wiper device accordingly.

The sleeve elements 28 . 28a . 28b and 28c have the advantage that they are designed such that they are self-identifying in cooperation with the complementary surface contour of the respective recess in the connecting element. When inserting the rotatably mounted sleeve member 28 . 28a . 28b and 28c in the corresponding recess 26 . 26a . 26b and 26c the sleeve element rotates 28 . 28a . 28b and 28c automatically in the intended mounting position. This prevents that a faulty mounting can take place.

For the embodiments according to the 4 and 5 However, the self-finding of the mounting position can only be done if the sleeve element 28 respectively. 28c not too strongly twisted with respect to the mounting position.

5 shows the embodiment of the invention gem. 1 enlarged, at the storage facility 52 to improve the quality of storage of the sleeve member 28 opposite the bearing pin 38 are provided. The storage means 52 are formed as bearing ring elements, which at the two opposite openings of the through hole 44 of the sleeve element 28 rotatably arranged. The twisting of the sleeve element 28 opposite the bearing pin 38 takes place by a relative movement between the bearing pin 38 and the storage facilities 52 , This can advantageously for the bearing pin 38 as well as for the sleeve element 28 find a material that meets the requirements of the conditions. In particular, the storage by the storage means can also be sealed. The friction is reduced and the dry running properties of the bearing are improved. The bearing is also insensitive to dirt.

The sleeve element 28 according to 5 essentially corresponds to the sleeve element 28c according to 4 , It has on its top a special design, in the description of the 6 and 7 will be received.

In the 6 is the free end of the wiper arm 10 shown in the assembled state. The bearing pin 38 is hereby rotationally fixed in the through holes 36 arranged. Furthermore, the sleeve element comprises 28 the two, in 5 bearing means shown 52 that with the bearing pin 38 interact.

At its top the sleeve element sees 28 in the middle area a depression 54 in front. In front of and behind the well 54 , in Wischblattlängsrichtung, is in each case a bevel 56 intended. The bevel 56 extends from the top of the sleeve member 28 at a slight angle to the opposite sides 50 ,

The connecting element 24 sees at its top four extending in wiper blade longitudinal webs 58 and 60 before, each having an L-shaped cross-section. The two bridges 58 as well as the two bridges 60 are each arranged along a line. In addition, the bridges are 58 the jetties 60 across from. Through the bars 58 and 60 become two upwardly open, along a line groove-shaped recesses 62 at the top of the connecting element 24 educated.

The bridges 58 and 60 also form extending in wiper blade longitudinal direction guide grooves 64 at the opposite longitudinal sides of the connecting element 24 are arranged.

The locking unit 30 or to the locking unit 30 belonging spring element 32 , is along the guide grooves 64 opposite the connecting element 24 displaceable. For this purpose, the in itself flat trained spring element 32 at its longitudinal edges by 180 °, in the direction of connecting element 24 bent guide webs 68 on. The guide bars 68 embrace the webs in the assembled state 58 and 60 of the connecting element 24 , wherein the free longitudinal edges of the guide webs 68 , again 7a to 7c can be removed, in the guide grooves 64 of the connecting element 24 intervention.

The locking element 30 sees two longitudinally extending side walls 70 , an end wall 72 and an upper wall 74 in front. The front wall 72 here has one of the contour of the spoiler-like approach 18 the squeegee 14 corresponding recess 76 on. In the assembled state, the spring element 32 on the inside of the upper wall 74 the locking unit 30 attached. For attachment to the upper wall 74 has the spring element 32 in the region of its central longitudinal axis a recess 78 on. This can be designed so that it is one on the inside of the upper wall 74 bite molded supernatant.

The spring element 32 also sees on its underside two down, in the assembled state in the direction of the sleeve member 28 , extending spring nose 80 on. The spring nose 80 are here in the form of bulges in the bent by 180 ° sections of the guide webs 68 executed. About these spring noses 80 will be in the mounted state in the recess 26 located sleeve element 28 acted upon by a spring force that the sleeve member 28 in the wedge-shaped recess 26 to press. The spring nose 80 grab this to the in 6 with the reference number 82 provided surfaces of the top of the sleeve member 28 at.

The spring element 32 sees in its middle area a spring tongue 84 which are transverse to the longitudinal direction of the flat wiper blade 12 along a line with the two spring lugs 80 runs. In the assembled state, the spring tongue engages 84 , as in 7c shown in the depression 54 of the sleeve element 28 one.

For mounting the wiper device, the sleeve element 28 at the free end of the wiper arm 10 is arranged in the recess 26 used. To hold the wiper blade on the wiper arm is the locking unit 30 with the spring element 32 , as in 7a shown, in the longitudinal direction of the flat wiper blade 12 on the connecting element 24 postponed. Here, as already mentioned, the guide webs 68 of the spring element 32 in the guide grooves 64 of the connecting element 24 , When sliding the locking unit 30 on the connecting element 24 becomes the spring tongue 84 over a ramp 86 lifted and gets into the behind the ramp 86 ( 6 ) lying groove-like recess 62 , The spring element 32 or the locking unit 30 is further due to the groove in the groove 62 located spring tongue 84 captured. The spring tongue 84 So it can work temporarily as a counter-stop means and in cooperation with the center of the connecting element 24 pointing side of the ramp 86 , which works as a stop means, the sliding of the locking unit 30 or belonging to her spring element 32 from the connecting element 24 prevent. Otherwise, this sliding could occur, in particular, when the locking unit is moved to its open position. In this state form the flat wiper blade 12 including connecting element and locking unit 30 with spring element 32 a structural unit. A release of the locking unit 30 from the connecting element 24 is, if at all, only with increased force, in which the spring tongue 84 out of the groove 62 is lifted, possible.

In the directly to the towards the center of the connecting element 24 facing inside of the ramp 86 adjoining area is a detent recess 96 incorporated, which in the open position, the spring tongue 84 can record in restraining. This makes it possible, the locking unit 30 temporarily lock in its open position. This is advantageous for the process of mounting the flat wiper blade 12 to the wiper arm 10 , In this way, a prerequisite for a mechanical assembly could be created. It also results in a simplification of the assembly when the wiper arm-wiper blade connection is made only at the vehicle manufacturer. The flat wiper blades can thus be delivered with the locking unit in the open position.

For final assembly, the locking unit 30 as far as in the longitudinal direction of the flat wiper blade 12 moved to the wiper arm end until the spring tongue 84 over the on the sleeve element 28 arranged bevel 56 into the depression 54 engaged. In this mounting position, the two spring lugs act on 80 the sleeve element 28 at the two areas 82 with the respective spring force. The sleeve element 28 is thus about the spring force of the spring lugs 80 in the recess 26 , as in 7c represented, held.

The loading of the sleeve element 28 with a spring force has the advantage that a play-free mounting of the sleeve member 28 in the recess 26 of the connecting element 24 can be realized. Occurring manufacturing tolerances, a different depth intervention of the sleeve member 28 in the recess 26 can result, can be compensated in this way. In addition, via the spring lugs 80 or over the spring element 32 Forces between the connecting element 24 and the sleeve member 28 transfer. About the two symmetrically arranged spring lugs 80 in particular, a tilting of the wiper blade 12 opposite the wiper arm 10 prevented around its longitudinal axis. An occurrence of tilting would bring reduced wiping quality, noise and higher wear with it.

During operation of the wiper device is about the in the recess 54 engaging spring tongue 84 ensures that the locking unit 30 not automatically from its locking position, as in 7c is shown, device.

To release the flat wiper blade 12 from the wiper arm 10 becomes the locking unit 30 after the wiper arm 10 shifted away from the side in the longitudinal direction of the flat wiper blade. For this purpose, an increased unlocking force is first required, through which the spring tongue 84 from the depression 54 to be led.

Like from the 8a to 8c clearly shows, has the connecting element 24 on its opposite longitudinal sides a defined projection 88 on. The supernatant 88 acts with at least one of the two tabs 34 or side walls of the wiper arm 10 provided recess 90 together, with the recess 90 on the side of the tabs facing the disk 34 or side walls is arranged. In the assembled state, the supernatant engages 88 into the recess 90 or attack the supernatants 88 in the recesses 90 one. The recesses 90 are from two opposite edges 92 and 94 limited. The supernatant 80 acts with the recess 90 or with the two edges 92 and 94 for limiting the pivoting angle of the flat wiper blade 12 opposite the wiper arm 10 together. A limitation of the pivot angle in this case has the advantage that overspeeding the storage between the wiper arm and flat wiper blade 12 is prevented. Such over-rotation could otherwise result in the wiper arm 10 the locking unit 30 from her, in 7c shown locked position presses, so the locking unit is opened unintentionally and possibly unnoticed. By limiting the Schwenhwinkels is also prevents the wiper accidentally from a, for example, to perform a manual windscreen cleaning, folded back from the disc position on the disc so that not the squeegee 14 with the wiper lip 16 but one end of the flat wiper blade 12 or one at the end of the flat wiper blade 12 attached cap 22 or the wiper lip 16 opposite side of the flat wiper blade 12 beats against the glass. This could damage the disc or the flat wiper blade.

In the 8a is a neutral middle layer of the flat wiper blade 12 opposite the wiper arm 10 shown. In the 8b is shown an extreme situation, in which the supernatant 88 on the edge 92 the recess 90 strikes. Another pivoting of the flat wiper blade 12 around the bearing pin 38 is therefore prevented. In 8c is the other extreme position of the wiper arm 10 opposite the flat wiper blade 12 shown. This is another pivoting of the flat wiper blade 12 due to abutment of the supernatant 88 on the edge 94 the recess 90 prevented.

All in the description, the following claims and the drawing Features can both individually, as well as in any combination with each other invention essential be.

Claims (22)

Wiper device, in particular for wiping vehicle windows, with a drivable wiper arm ( 10 ) and with one on the wiper arm ( 10 ) can be arranged flat wiper blade ( 12 ), which is a squeegee ( 14 ) with a wiper lip facing the window to be wiped ( 16 ), two the squeegee ( 14 ) receiving, strip-like elongated spring rails ( 20 ) and one with the spring rails ( 20 ) coupled connection element ( 24 ), wherein the connecting element ( 24 ) an opening in the direction away from the disc (FIG. 26 ) for receiving at least one, at the free end of a wiper arm ( 10 ) arranged bearing element ( 38 ), characterized in that on the bearing element ( 38 ) a rotatably mounted sleeve element ( 28 . 28a . 28b . 28c ) is arranged, wherein the recess facing the surface contour of the sleeve member ( 28 . 28a . 28b . 28c ) at least partially complementary to the surface contour of the recess ( 26 . 26a . 26b . 26c ) is trained. Wiper device according to claim 1, characterized in that the surface contour of the sleeve element ( 28a ) in the axial direction of the sleeve member ( 28a ) has extending circular cross-section. Wiper device according to claim 1 or 2, characterized in that the surface contour of the sleeve element ( 28 . 28b . 28c ) at least in sections an area ( 46 ), which is opposite to a complementary surface contour of the recess ( 26 . 26b . 26c ) is designed to inhibit rotation. Wiper device according to claim 1 or 3, characterized in that the surface contour of the sleeve element ( 28 . 28b . 28c ) at least in sections an area ( 46 ) which self-locating in a complementary surface contour of the recess ( 26 . 26b . 26c ) is trained. Wiper device according to claim 3 or 4, characterized in that the rotation-inhibiting and / or self-locating portion of the surface contour of the sleeve member ( 28 . 28b . 28c ) in particular has an elliptical, triangular or trapezoidal cross-section and that the surface contour of the recess ( 26 . 26b . 26c ) is formed complementary thereto. Wiper device according to one of the preceding claims, characterized in that between the bearing element ( 38 ) and the sleeve element ( 28 ) Storage means ( 52 ) are provided to improve the quality of storage. Wiper device according to claim 6, characterized in that the bearing means ( 52 ) at the two opposite openings of the Hül senelements ( 28 ) arranged rotationally fixed bearing ring elements. Wiper device according to one of the preceding claims, characterized in that the wiper device has a locking unit ( 30 ), for the arrangement of the flat wiper blade ( 12 ) on the wiper arm ( 10 ) the open recess ( 26 ) of the connecting element ( 24 ) Can be closed at least on the side facing away from the disc. Wiper device according to claim 8, characterized in that the locking unit ( 30 ) the connecting element ( 24 ) largely surrounds. Wiper device according to claim 8 or 9, characterized in that the locking unit ( 30 ) the connecting element ( 24 ) laterally um¬ and / or engaging behind guide webs ( 68 ), which with on the connecting element ( 24 ) existing guide grooves ( 64 ) interact. Wiper device according to one of claims 8 to 10, characterized in that the recess ( 26 ) facing side of the locking unit is formed such that the sleeve member ( 28 ) largely free of play in the recess ( 26 ) is halterbar. Wiper device according to one of claims 8 to 11, characterized in that the locking unit ( 30 ) on the recess side facing a spring element ( 32 . 80 . 84 ), which is suitable, in the recess ( 26 ) adaptable sleeve element ( 28 ) to apply a spring force. Wiper device according to claim 12, characterized in that the spring element ( 32 ) on the sleeve element ( 28 ) facing side at least one resiliently yielding survey ( 84 ) with one on the sleeve member ( 28 ) arranged recess ( 54 ) cooperates. Wiper device according to one of claims 8 to 13, characterized in that on the locking unit ( 30 ) or at which to the locking unit ( 30 ) belonging spring element ( 32 ) a stop means is provided, which temporarily with a on the connecting element ( 24 ) counteracting means cooperates to prevent accidental removal of the locking unit ( 30 ) of the connecting element ( 24 ) to prevent. Wiper device according to claim 14, characterized in that the spring tongue ( 84 ) temporarily the function of the stop means and one on the connecting element ( 24 ) existing ramp ( 86 ) assumes the function of the counter stop means. Wiper device according to one of claims 8 to 15, characterized in that on the locking unit ( 30 ) or at which to the locking unit ( 30 ) belonging spring element ( 32 ) a locking means is provided, which temporarily with a on the connecting element ( 24 ) counter-locking means cooperates to the locking unit ( 30 ) before mounting the flat wiper blade ( 12 ) to the wiper arm ( 10 ) in the open position on the connecting element ( 24 ) to lock. Wiper device according to claim 16, characterized in that the spring tongue ( 84 ) temporarily the function of the locking means and a on the connecting element ( 24 ) formed locking recess ( 96 ) assumes the function of the counter-locking means, wherein the detent recess ( 96 ) preferably directly in the region of the connecting element ( 24 ), which, in the longitudinal direction of the flat wiper blade ( 12 ), to which the center of the connecting element ( 24 ) facing side of a on the connecting element ( 24 ) existing ramp ( 8b ). Wiper device according to claim 12 or 13, characterized in that the spring element ( 32 ) laterally the connecting element ( 24 ) encompassing and trailing guide bars ( 68 ), which with on the connecting element ( 24 ) existing guide grooves ( 64 ) interact. Wiper device according to one of claims 8 to 18, characterized in that on the connecting element ( 24 ) a supernatant ( 88 ) or a recess which is arranged with a at the free end of the wiper arm ( 10 ) arranged recess ( 90 ) or a supernatant to the pivoting angle limit of the flat wiper blade ( 12 ) opposite the wiper arm ( 10 ) cooperates. Wiper device according to claim 19, characterized in that the supernatant ( 88 ) or the recess ( 90 ) on the wiper blade ( 12 ) facing side below the sleeve member ( 28 ) is arranged. Flat wiper blade ( 12 ) according to at least one of the preceding claims. Wiper arm ( 10 ) according to at least one of the preceding claims.