DE102008021457A1 - Wiper blade and wiper arm - Google Patents

Abstract

Wiper blade for cleaning vehicle windows, comprising at least one wiper blade body extending in the wiper blade longitudinal direction, with at least one wiper blade on the wiper blade body, with at least one wiper blade adapter on the wiper blade body for a mechanical connection of the wiper blade to a wiper arm or a wiper arm adapter there and with at least one wiper blade adapter Wiper blade provided nozzle opening, which is connectable via a wiper blade side fluid connection with a vehicle-side supply system for supplying a cleaning and washing liquid.

Description

The The invention relates to a wiper blade for cleaning vehicle windows according to the preamble of claim 1 and in particular on a wiper blade (also wet wiper blade), which on his wiper blade body at least one spray nozzle or nozzle opening for dispensing a cleaning and washing liquid (z. As water, possibly with cleaning and / or anti-freeze additives) has on the vehicle window. The invention further relates on a wiper arm according to the preamble claim 12th

Wet wiper blades are also known in particular as flat wiper blades ( DE 2004 056 835 A1 . DE 100 00 372 A1 . US 4,339,839 ), and then generally consist of a wiper blade extending in wiper blade longitudinal direction and forming a wiper blade of a rubber-elastic material and a strip-like wiper blade body (wiper strip), which is held on the wiper blade and which in turn via a wiper blade adapter with the wiper arm of a windshield wiper system releasably mechanically connectable is. On at least one wiper blade longitudinal side of the wiper blade body is formed with at least one distribution or injection channel with a plurality of nozzle or injection openings for discharging the cleaning and washing liquid on the vehicle window. By means of a wiper blade-side fluid connection, the at least one injection channel can be connected to a hose line of a vehicle-side supply system, which provides the cleaning and washing liquid.

Independently of the special training is with all known wet wiper blades, d. H. in all known wiper blades with at least a spray nozzle on the wiper blade body u. a. disadvantageous that in addition to the mechanical connection and release the wiper blade on or from the wiper arm z. B. at the first installation or when replacing the wiper blade a separate connection and releasing the wiper blade side fluid port is necessary and usually by pushing or pulling off the Hose line of the vehicle-side supply system on the or from the wiper blade side fluid connection. This can be done very fast to damage to individual components or else to confusion in the connections and thus to security risks to lead. This applies in particular to such designs a windscreen wiper and washer where the cleaning and washing liquid from the on both long sides the wiper blade extending spray channels dependent is applied by the direction of the pivoting movement of the wiper blade, in the form that in each case that injection channel, the related precedes the pivoting movement of the wiper blade of the wiper lip, at least preferably with the cleaning and washing liquid is supplied. A swap of the connections then has a significant deterioration in the quality of cleaning the vehicle window and thus a significant deterioration the visibility results.

task The invention is to show a wiper blade, which this Avoiding disadvantages and in which with the mechanical connection or Release the wiper blade on or from the wiper arm automatically also the fluid connection for the cleaning and washing liquid, d. H. between the vehicle-side supply system and the wiper blade side Fluid connection is made or separated.

to Solution to this problem is a wiper blade according to the Claim 1 is formed. A wiper arm for use with one Such wiper blade is the subject of claim 12.

The wiper blade according to the invention is designed that in the mechanical connection with the wiper arm or with a at the wiper arm provided or trained Wischarmadapter at the same time also the fluid connection made or vice versa when loosening solved the mechanical connection at the same time the fluid connection or is disconnected, so the connection between the wiper blade and the wiper arm a combined mechanical and fluidic connection is. This will damage the individual components, in particular also on the at least one hose lines as well Confusion regarding connections and security risks in particular by confused and / or insufficient connections avoided.

Further developments, Advantages and applications of the invention result also from the following description of exemplary embodiments and from the figures. All are described and / or illustrated illustrated features alone or in any combination in principle subject of the invention, independent from their summary in the claims or their dependency. Also, the content of the claims becomes an integral part the description made.

The Invention will be described below with reference to the figures of embodiments explained in more detail. Show it:

1 in perspective view of the wiper arm of a wiper system for vehicle windows, for example for vehicle windshields, together with a wiper blade (wet wiper blade);

2 a section through the wiper arm of 1 ;

3 in an enlarged partial perspective view of the wiper blade and the wiper arm together with a wiper blade adapter for attachment of the wiper blade on the wiper arm;

4 in a partial view, a longitudinal section through the wiper blade, through the wiper blade adapter and through the Wischarmende connected to the wiper blade or the local Wischarmadapter;

5 a section corresponding to the line II of 4 ;

6 in a perspective exploded view of the wiper blade, provided on the wiper blade two-piece wiper blade adapter, to be connected to the wiper blade end of the wiper arm and fittings for a hydraulic connection between the wiper arm and the wiper blade;

7 in a perspective bottom view of the wiper blade adapter and connected to the wiper blade adapter Wischarmende or the local Wischarmadapter;

8th in an enlarged view, the attachment of the wischarmseitigen fluid fittings;

9 in an enlarged view a section through one of the wischarmseitigen fluid fittings;

10 in a simplified representation of an adapter part and to be connected to this adapter part Wischarmende in a further embodiment of the invention;

11 similar to a cut 5 at a wiper blade with only one spray channel on a wiper blade long side.

In the figures is 1 the wiper arm of a windshield wiper system, z. B. for the windscreen of a road vehicle. The wiper arm 1 consists in a known manner from a fastened to a wiper shaft of a windshield wiper drive bearing element 2 and one over a wiper arm joint 3 hinged to the bearing element 2 connected wiper rod 4 , on whose the bearing element 2 facing away from Wischarmende 1.1 a wiper blade 5 by means of a wiper blade adapter 6 is attached exchangeably. The wiper blade adapter 6 is for example in the middle or about in the middle of the wiper blade 5 intended.

How the particular 5 shows is the wiper blade 5 formed as a flat wiper blade, which in the illustrated embodiment, inter alia, over the entire length of the wiper blade extending flat strip-like spring rail 6 has, on both sides of the wiper blade adapter 6 in each case a wiper blade element or section 5.1 respectively. 5.2 is arranged, essentially consisting of a profile rail, for example made of plastic 8th that with a profile section 8.1 the spring rail 7 encloses and on its underside a C-shaped profile section 8.2 forms, in which the squeegee made of a rubber elastic material 9 with its wiper lip resting against the vehicle window at least during the wiping operation 10 is held positively.

At the rail 8th each wiper blade element 5.1 respectively. 5.2 is a strip-like profile designed as a spoiler 11 provided, which starting from the wiper blade adapter 6 extends to a wiper blade end. In every profile 11 are two distribution or injection channels 12 and 13 formed, each extending on a wiper blade longitudinal side and with a plurality of nozzle or spray openings 14 for applying a cleaning and washing liquid (for example, water ggs. With cleaning and / or anti-freeze additives) is provided on the vehicle window. With M in the figures one is the longitudinal extent of the wiper blade 5 enclosing center plane, to which, in the illustrated embodiment, at least the spring rail 7 , the profile rail 8th as well as the squeegee 9 with wiper lip 10 when not against the vehicle window fitting wiper blade 5 are formed mirror-symmetrically.

The supply of the spray channels 12 and 13 with the cleaning and washing liquid via the wiper blade adapter 6 , which as well as mechanical connection for releasably connecting the wiper blade 5 with the wiper arm end 1.1 as well as a hydraulic connection for releasably connecting the wiper blade 5 or the spray channels 12 and 13 with a hose line 15 serves, which leads to an unillustrated vehicle-side supply system for the cleaning and washing liquid and in the illustrated embodiment with two separate channels 16 and 17 trained and for example by means of brackets 18 at the mounted wiper arm 1 the vehicle window facing Wischarmunterseite is held ( 2 ).

The wiper blade adapter 6 consists of two adapter parts 19 and 20 of which the adapter part 19 approximately in the wiper blade center on the spring rail 7 is held, and this spring rail from the top of a rider-like and form-fitting cross-over. The adapter part 19 forms on its underside also the continuation of the profile section 8.2 for positive retention of the wiper blade rubber 9 in the area of the wiper blade adapter 6 ,

On the two wiper blade long sides is the adapter part 19 each with a distributor or T-piece 21 respectively. 22 provided, which in the illustrated embodiment, one with the adapter part 19 for example, by locking or otherwise suitably connected molding. Basically, the connecting pieces 21 and 22 also in one piece with the adapter part 19 be prepared. Each connector 21 and 22 forms a fluid or flow channel 23 for the washing and cleaning liquid with a wiper blade extending in the longitudinal direction of the channel portion, each at both ends of a formed as a connecting piece section 21.1 respectively. 22.1 is open and a perpendicular thereto channel portion, which is formed on a section designed as a connecting piece 21.2 respectively. 22.2 of the distributor 21 respectively. 22 is open.

At a block or web-like bearing section 19.1 of the adapter part 19 is the adapter part 20 the section 19.1 equidistantly articulated like a rider. For this the adapter part has 20 a substantially U-shaped cross-section consisting of the two on both sides of the bearing portion 19.1 arranged and guided on this thighs 20.1 and from which these legs connecting and above the bearing section 19.1 arranged yoke section 20.2 , One the thighs 20.1 as well as the storage section 19.1 thorough hinge pin 24 connects the two adapter parts 19 and 20 for forming an adapter joint such that the adapter part 19 with the attached part of the wiper blade 5 is pivotable about a limited angular range relative to the adapter part, and about one of the axis of the hinge pin 24 defined pivot axis perpendicular to the median plane M, to which also the adapter part 20 is formed mirror-symmetrically.

In the adapter part 20 are two flow channels 25 and 26 formed, extending in the longitudinal direction of the adapter part 20 , ie perpendicular to the axial direction of the hinge pin 24 extend and in the illustrated embodiment at the transition between a leg 20.1 and the yoke section 20.2 are provided. Every flow channel 25 and 26 ends at one opposite the hinge pin 24 radially offset narrow or end face 27 of the adapter part 20 in a local fluid connection 28 in the manner described in more detail below for connecting one channel at a time 16 respectively. 17 the hose line 15 to a flow channel 25 respectively. 26 serves.

In the area of the front 27 opposite end face 29 are the flow channels 25 and 26 each with a radially protruding connection piece 30 provided, open at this connection and otherwise closed. Over the connecting pieces 30 are the flow channels 25 and 26 each with a flow channel 21 respectively. 22 connected, via a flexible wiper-internal connector 31 , which is hose-like and with its ends each on a connecting piece 30 as well as on one of the connecting pieces 21.2 respectively. 22.2 is attached, leaving a hydraulic connection between the flow channel 25 and the flow channel 21 or between the flow channel 26 and the flow channel 22 consists. The connectors 31 are each bellows-shaped in their central region and made of a highly flexible material (for example, EPDM or TPE), so that over the two connectors 31 not only is an externally sealed fluid or hydraulic connection achieved, but also a pivoting of the adapter part 19 relative to the adapter part 20 is possible, without a disturbing, the pivotal movement counteracting, of the connectors 31 exerted moment. Through a cap 32 , for example, by locking on the adapter part 20 is attached, the wiper blade adapter 6 as well as the connectors 31 at the front 29 covered.

The wiper blade adapter 6 or all parts of this wiper blade adapter including the cap 32 and except the hinge pin 24 are preferably made of a suitable plastic.

With the wiper blade adapter 6 is the wiper blade 5 detachable or exchangeable at Wischarmende 1.1 fastened, in the illustrated embodiment by sliding and locking on Wischarmende 1.1 , This is the wiper arm 1 at its end 1.1 as a wiper arm adapter 33 with an adapter holder 33.1 trained or provided with such Wischarmadapter, the or its adapter receptacle 33.1 for a positive reception of the adapter part 20 is formed, by inserting the adapter part 20 in the adapter holder 33.1 in a joining direction or axis X, which in the illustrated embodiment, an axial direction radially or approximately radially to the axis of the hinge pin 24 and is parallel or approximately parallel to the wiper blade extension.

The wiper arm adapter 33 is to form the adapter receptacle 33.1 in cross section as a to the free end and to the underside of the wiper arm 1 open U-profile with two legs 34 and a yoke portion interconnecting these legs 35 educated. At her the yoke section 35 away from the edge are the thighs 34 each with an inwardly projecting into the U-profile bend 36 provided so that the adapter part 20 after it's from the wiper arm end 1.1 here in the adapter holder 33.1 was inserted from the thighs 34 and the yoke section 35 rei terartig and positive fit is overlapped and the bends 36 the adapter part 20 each at its the adapter part 19 facing bottom or at a local locking surface 37 engage behind.

To secure the mechanical connection between the wiper blade adapter 6 and the wiper arm 1 is the adapter part 20 at his the wiper blade 5 facing away from the top with a resilient catch 38 provided, and indeed for locking in a counter-locking opening 39 at the yoke section 35 , The rest 38 is in the illustrated embodiment as a square or substantially square projection on a resilient tongue 38.1 trained, as well as the projection 38 integral with the adapter part 20 is made.

A special feature of the wiper blade 5 or the wiper blade adapter 6 is that with the mechanical connection of the wiper blade adapter 6 on the wiper arm 1 at the same time also the fluid connection between the channels 16 and 17 each with one of the flow channels 25 and 26 will be produced. For this purpose are in the adapter holder 33.1 two sleeve-like fittings 40 and 41 provided, which are oriented with their axes oriented in the joining direction X parallel to and at a distance from each other, in such a way that after insertion of the adapter part 20 in the adapter holder 33.1 each fitting 40 and 41 coaxially or approximately coaxially with the axis of a connection opening 28 lies.

The two fittings 40 and 41 are with a holding element made of a suitable material, such as plastic 42 axially non-displaceable, but otherwise held at their ends in axial directions perpendicular to the joining direction X within certain limits, as indicated in the figures with the double arrows Y and Z.

The holding element 42 is essentially bow-shaped with two lateral legs or stirrup arms 43 and with one the hanger arms 43 connecting yoke piece 44 educated. Each bail arm 43 is a molded support arm 45 adjacent, leaving between each bail arm 43 and the adjacent holding arm 45 a clip-like holding section 46 is formed, on which the relevant connector 40 can be fastened by lateral or radial pushing and latching, in such a way that the respective bail arm 43 and also the associated holding arm 45 at least partially in a circumferential groove 47 are included, the relevant connector 40 respectively. 41 at a portion formed between the terminal ends 48 having enlarged outer diameter.

The with the fittings 40 and 41 mounted holding element 42 is in turn by latching in the interior of the U-profile of the wiper arm adapter 33 held, in the way that the bow-like holding element 42 with the common ironing level of the hanger arms 43 , the yoke piece 44 and the support arms 45 oriented perpendicular to the joining direction X, with the connecting pieces 40 and 41 opposite side of the hanger arms 43 and the yoke piece 44 on the inner surface of the wiper arm adapter 33 in the area of the thighs 34 and the yoke section 35 abuts and with lateral projections 43.1 attached to the free ends of the hanger arms 43 are formed, latching in each case an opening 49 engages in one leg each 43 is provided.

At the one, over the section 48 wegstehende end is every fitting 40 and 41 or the flow channel formed in this connection piece 40 with a flow channel 16 respectively. 17 inside the wiper arm adapter 33 split hose line 15 connected. The other, over the section 48 wegstehende end 40.2 respectively. 41.2 each fitting 40 respectively. 41 , serves as a coupling section when pushing on the wiper blade adapter 6 on the wiper arm adapter 33 for producing the fluid connection in each case a connection opening 28 is introduced and with this connection opening 28 forms a fluid coupling.

As the figures show are the sections 40.2 respectively. 41.2 at their free ends, each with a conical surface 50 Mistake. Also the connection openings 28 are bevelled at their free edge accordingly, so that when sliding the wiper blade adapter 6 on the wiper arm adapter 33 by self-centering in the axial directions perpendicular to the joining direction X movable connecting pieces 40 and 41 (Double arrows Y and Z) a safe insertion of these fittings 40 and 41 or their coupling sections 40.2 and 41.2 in the respective connection opening 28 is guaranteed. For a sealed outward connection is any fitting 40 and 41 at its coupling section 40.2 respectively. 41.2 with a received in a circumferential groove ring seal 51 Mistake.

The wiper blade adapter 6 or its adapter part 20 and the wiper arm adapter 33 thus form a re-releasable combined mechanical and fluidic connection 52 with a fluid coupling between the wiper arm 1 and the wiper blade 5 , in the (connection) by the joining and locking of the adapter part 20 on the wiper arm adapter 33 or in the local adapter holder 33.1 not only the mechanical connection, but also automatically the fluid connection between the hose line 15 and the wiper blade 5 or the local spray channels 12 and 13 is produced or vice versa in the mechanical separation of the wiper blade 5 from the wiper arm 1 automatically the fluid connection is disconnected. Cumbersome manipulations during assembly and / or replacement of the wiper blade 5 for making or releasing the fluid connections are thus avoided.

The 10 shows in a simplified representation of an embodiment in which the releasable fluid connection of the combined mechanical and fluidic connection 52a is realized in that instead of the fittings 40 and 41 fittings 53 are provided, which at its coupling portion of the connection opening 28 corresponding connection opening 54 exhibit. On the adapter part 20 are the local flow channels, of which in the 8th only the flow channel 25 is shown with one in the respective connection opening 54 insertable, a part of the respective flow channel 25 respectively. 26 forming connecting piece 55 with ring seal 56 Mistake. Also in this embodiment, the fittings 53 again oriented with their axes parallel to the joining direction X and with the bracket element 42 held such that the fittings 53 Although in the joining direction X are not axially or substantially not displaced, but are otherwise movable in the axial directions perpendicular to the joining direction X for self-centering during the preparation of the fluid connection again.

The 11 finally shows in a presentation like 5 as another possible embodiment, a wiper blade 5a which differs from the wiper blade 5 differs in that only on a wiper blade longitudinal side an injection channel, for example, the spray channel 12 with the associated spray openings 14 is provided. Accordingly, in the wiper blade adapter 6 in this embodiment, there is also only one internal fluid connection, for example with the single flow channel 25 in the adapter part 20 which then has the combined mechanical and fluidic connection 52 or 52a fluidly with a channel, such as the channel 16 the hose line 15 connected is.

The The invention has been described above with reference to exemplary embodiments. It is understood that numerous changes as well as modifications possible are, without thereby the inventive idea underlying the invention will leave. All versions are common, that for releasably connecting the wiper blade with the wiper arm provided a combined mechanical and fluidic connection is, in the form that during manufacture or release the mechanical connection at the same time automatically the fluid connection is produced or dissolved.

1

wiper arm

1.1

wiper arm

2

bearing element

3

Wischarmgelenk

4

Wischarmabschnitt or wiper rod

5, 5a

wiper blade

5.1 5.2

Wiper blade section

6

Wiper blade adapter

7

spring rail

8th

rail

8.1 8.2

profile section

9

squeegee

10

wiper lip

11

spoiler-like Wiper blade element

12 13

injection channel

14

nozzle or spray opening

15

hose

16 17

Channel of the hose line 15

18

clip

19 20

adapter part

19.1

bearing portion

20.1

Leg of the adapter part 20

20.2

Yoke section of the adapter part 20

21 22

T- or distributor

21.1, 21.2

spigot

22.1, 22.2

spigot

23

channel

24

hinge pins

25 26

flow channel

27

front

28

Connection- or coupling opening

29

front

30

spigot

31

joint

32

cap

33

wiper arm

33.1

adapter seat

33.1

adapter seat of the wiper arm adapter

34

leg

35

yoke

36

angling

37

Verriegelungsfläche- or section

38

rest

38.1

spring tongue

39

opening

40 41

connector

40.1, 41.1

connecting portion

40.2, 41.2

coupling section

42

retaining element

43

bail arm

43.1

section

44

yoke piece

45

holding arm

46

cliff-like holding section

47

circumferential groove

48

Section of the connector 40 respectively. 41

49

latching opening

50

conical surface

51

sealing ring

52 52a

combined mechanical and fluidic connection

53

connector

54

Connection- or coupling opening

55

spigot

56

ring seal

M

midplane

X

joining direction

Y, Z

axially perpendicular to joining direction X

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 2004056835 A1 [0002]
• - DE 10000372 A1 [0002]
• US 4339839 [0002]

Claims (16)

Wiper blade for cleaning vehicle windows, having at least one wiper blade body extending in wiper blade longitudinal direction (US Pat. 7 . 8th . 11 ), with at least one at least one wiper lip ( 10 ) forming squeegee ( 9 ) on the wiper blade body, with at least one wiper blade adapter ( 6 ) on the wiper blade body for a mechanical connection of the wiper blade ( 5 . 5a ) with a wiper arm ( 1 ) or a local wiper arm adapter ( 33 ), and at least one on the wiper blade ( 5 . 5a ) provided nozzle opening ( 14 ), which via a wiper blade-side fluid connection ( 28 . 55 ) is connectable to a vehicle-side supply system for supplying a cleaning and washing liquid, characterized in that the at least one wiper blade-side fluid connection ( 28 . 55 ) Part of a fluid coupling ( 28 . 54 ; 41 . 42 . 55 ) is, on the in the mechanical connection of the wiper blade ( 5 . 5a ) on the wiper arm ( 1 ) or when releasing this mechanical connection at the same time the fluid connection with the vehicle-side supply system is made or released. Wiper blade according to claim 1, characterized in that the wiper blade adapter ( 6 ) from a first adapter part ( 19 ) on the wiper blade body ( 7 . 8th . 11 ) and a second adapter part ( 20 ), which via an adapter joint ( 24 ) with the first adapter part ( 19 ), and that the second adapter part ( 20 ) for mechanical connection to a wiper arm ( 1 ) or a wiper arm adapter ( 33 ) and the at least one wiper blade-side fluid connection ( 28 . 55 ) having. Wiper blade according to claim 2, characterized in that the second adapter part ( 20 ) is formed with at least one guide having a guide or joining axis (X) for guiding the second adapter part ( 20 ) on the wiper arm ( 1 ) defined during mechanical connection or release, and that the at least one wiper blade-side fluid connection ( 28 . 55 ) is oriented with its axis parallel or in the direction of the guide axis. Wiper blade according to claim 2 or 3, characterized in that the second adapter part ( 20 ) is formed with at least one guide having a guide or joining axis (X) perpendicular or substantially perpendicular to the axis of the adapter joint ( 24 ), and that the at least one wiper blade-side fluid connection ( 28 . 55 ) is oriented with its axis parallel or in the direction of the guide axis. Wiper blade according to one of the preceding claims, characterized in that the at least one wiper blade-side fluid connection ( 28 ) is formed by an opening, for receiving a wischarmseitigen, at least one fluid channel having nozzle-like connection piece ( 40 . 41 ). Wiper blade according to one of the preceding claims, characterized in that the wiper blade-side fluid connection ( 55 ) is a connecting piece which has at least one fluid channel and is suitable for cooperation with a connection opening ( 54 ) is formed of a wischarmseitigen connection piece. Wiper blade according to one of the preceding claims, characterized in that on a common side ( 27 ) of the second adapter part ( 20 ) in an axial direction perpendicular or transversely to the joining and guiding axis (X) offset at least two wiper blade side fluid connections ( 28 . 55 ) are provided. Wiper blade according to one of the preceding claims, characterized in that a wiper blade-side fluid connection ( 23 . 25 . 26 . 31 ), the at least one nozzle opening ( 14 ) with the at least one wiper blade-side fluid connection ( 28 . 55 ) connects one the adapter joint ( 24 ) bridging flow channel ( 31 ), preferably of a flexible hose-like connector ( 31 ) is formed, which, for example, with respect to at least one hinge axis of the adapter joint ( 24 ) and / or bellows-shaped and / or curved. Wiper blade according to one of the preceding claims, characterized in that a wiper blade-side fluid connection ( 23 . 25 . 26 . 31 ), the at least one nozzle opening ( 14 ) with the at least one wiper blade-side fluid connection ( 28 . 55 ) connects, at least one along a longitudinal side of the wiper blade ( 5 ) extending spray channel ( 12 . 13 ) which is connected to the at least one nozzle opening ( 14 ), preferably with a plurality of nozzle openings ( 14 ) is provided. Wiper blade according to one of the preceding claims, characterized in that a wiper blade-side fluid connection ( 23 . 25 . 26 . 31 ), the at least one nozzle opening ( 14 ) with the at least one wiper blade-side fluid connection ( 28 . 55 ), at least one in or on the first adapter part ( 19 ) formed flow channel ( 23 ), preferably at least one flow channel ( 23 ), which with at least one injection channel ( 12 . 13 ) on a longitudinal side of the wiper blade ( 5 ) connected is. Wiper blade according to one of the preceding claims, characterized in that the wiper blade as a flat wiper blade with a on at least one rail ( 8th ) held swipe rubber ( 9 ) and with at least one spring rail ( 7 ) is formed and / or that the squeegee ( 9 ) exchangeable on the wiper blade body ( 7 . 8th . 11 ) is provided. Wiper arm for use with a wiper blade ( 5 . 5a ) according to one of the preceding claims 1-11, with a wiper arm adapter ( 33 ), on which the wiper blade ( 5 . 5a ) with a wiper blade adapter ( 6 ) is mechanically releasably connectable by joining in at least one joining direction (X) and locking, as well as with at least one of the wiper arm adapter ( 33 ) and with a wiper blade-side fluid connection ( 28 . 55 ) connectable fluid line ( 15 ) for supplying a cleaning and washing liquid, characterized in that in or on the wiper arm adapter ( 33 ) at least one wischarmseitiger fluid connection ( 40 . 41 . 53 ) is provided, via the mechanical connection of the wiper blade ( 5 . 5a ) with the wiper arm ( 1 ) at the same time the fluid connection between the at least one on the wiper arm ( 1 ) provided fluid line ( 15 ) and the wiper blade-side fluid connection ( 28 . 55 ) will be produced. Wiper arm according to claim 12, characterized in that the at least one wiper arm-side fluid connection ( 40 . 41 . 53 ) for self-centering in at least one axial direction (Y, Z) perpendicular to the joining direction (X) movable in or on the wiper arm adapter ( 33 ) is provided. Wiper arm according to claim 12 or 13, characterized in that the at least one wischarmseitige fluid connection ( 40 . 41 . 53 ) as in an opening of the wiper blade side fluid port ( 28 ) insertable connection piece or with an opening ( 54 ) for receiving a wiper blade side fluid connection forming connecting piece ( 55 ) is provided. Wiper arm according to one of the preceding claims, characterized in that the at least one wiper arm-side fluid connection ( 40 . 41 . 53 ) with at least one bow-shaped retaining element ( 42 ) preferably by latching on or in the wiper blade adapter ( 33 ) is attached. Wiper arm according to one of the preceding claims, characterized in that the wiper arm adapter ( 33 ) with an U-profile or C-profile an adapter receptacle ( 33.1 ) for the positive connection of the wiper blade adapter ( 6 ) with the wiper arm ( 1 ), and that within the adapter receptacle ( 33.1 ) the at least one wiper arm-side fluid connection ( 40 . 41 . 53 ) is provided.