wiper blade and wiper arm

Abstract

A wiper blade for cleaning vehicle windows comprises at least one wiper blade body (7, 8, 11) extending in the longitudinal direction of the wiper blade, at least one wiper rubber (9) forming at least one wiper lip (10) on the wiper blade body, 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 wiper arm adapter (33) thereon, and at least one nozzle opening (14) provided on the wiper blade (5, 5a) which can be connected to a vehicle-side supply system for supplying a cleaning and washing fluid via a wiper blade-side fluid connection (28, 55).The at least one wiper blade-side fluid connection (28, 55) is part of a fluid coupling (28, 54; 41, 42, 55) via which, when the wiper blade (5, 5a) is mechanically connected to the wiper arm (1) or when this mechanical connection is released, the fluid connection to the vehicle's supply system is simultaneously established or released. A wiper blade-side fluid connection (23, 25, 26, 31), which connects the at least one nozzle opening (14) to the at least one wiper blade-side fluid connection (28, 55), has at least one flow channel (23) formed in or on a first adapter part (19) of the wiper blade adapter (6).

Description

[0001] The invention relates to a wiper blade for cleaning vehicle windows according to the preamble of claim 1, and specifically to a wiper blade (also called a wet wiper blade) which has at least one spray nozzle or nozzle opening on its wiper blade body for applying a cleaning and washing fluid (e.g., water, possibly with cleaning and / or antifreeze additives) to the vehicle window. The invention further relates to a wiper arm according to the preamble of claim 18.

[0002] Wet wiper blades are also known as flat wiper blades (DE 10 2004 056 835 A1, DE 100 00 372 A1, US 4,339,839), and generally consist of a wiper blade made of a rubber-elastic material extending longitudinally along the blade and forming a wiping lip, and a strip-like wiper blade body (wiper strip) to which the wiper blade is attached and which, in turn, can be mechanically connected to the wiper arm of a windshield wiper system via a wiper blade adapter. On at least one longitudinal side of the wiper blade, the wiper blade body is designed with at least one distribution or spray channel with a plurality of nozzles or spray openings for applying the cleaning and washing fluid to the vehicle windshield.At least one spray channel can be connected to a hose line of a vehicle-side supply system, which provides the cleaning and washing fluid, via a fluid connection on the wiper blade side.

[0003] Regardless of the specific design, all known wet wiper blades—that is, all known wiper blades with at least one spray nozzle on the wiper blade body—share a disadvantage: in addition to the mechanical connection and disconnection of the wiper blade to and from the wiper arm, for example, during initial installation or when replacing the wiper blade, a separate connection and disconnection of the fluid connection on the wiper blade side is necessary. This is usually done by pushing the hose of the vehicle's supply system onto or off the fluid connection on the wiper blade side. This can very quickly lead to damage to individual components or to confusion regarding the connections, and thus to safety risks.This applies particularly to windshield wiper and washer systems where the cleaning and washing fluid is dispensed from spray channels extending along both longitudinal sides of the wiper blade, depending on the direction of the blade's pivoting movement. Specifically, the spray channel that leads the wiper lip in the blade's pivoting movement is at least preferentially supplied with the cleaning and washing fluid. Reversing these connections results in a significant deterioration in the cleaning quality of the windshield and consequently a substantial impairment of visibility.

[0004] A wiper blade with the features of the preamble of claim 1 is known from US 2,432,690 A. The pivoting of the wiper blade on the wiper arm is effected by bearing pins which are rigidly connected to the rest of the wiper blade.

[0005] US Patent 2,925,617 A discloses a windshield wiper assembly with an integrated water supply, whereby the water is applied directly to the windshield through the wiper blade. The connection between the wiper arm and the wiper blade is designed so that the entire wiper assembly can be easily disassembled for inspection, cleaning, and repair, and the parts can be easily reassembled with a seal between them.

[0006] From the subsequently published DE 10 2007 062 304 A1, a wiper blade for cleaning vehicle windows and a wiper arm for use with such a wiper blade are known. The wiper blade comprises a wiper body extending in the longitudinal direction of the wiper blade, a wiper rubber forming a wiping lip on the wiper body, and an adapter forming an adapter joint, which is provided with a first adapter part on the wiper body and can be attached to a wiper arm with a second adapter part connected to the first via the adapter joint. The wiper blade further comprises a nozzle or nozzle opening which can be connected via a fluid connection on the wiper blade side to a supply system for supplying the cleaning and washing fluid or to a line of this supply system.

[0007] The object of the invention is to provide a wiper blade which avoids these disadvantages and in which the fluid connection for the cleaning and washing fluid, i.e. between the vehicle-side supply system and the wiper blade-side fluid connection, is automatically established or disconnected when the wiper blade is mechanically connected or disconnected to or from the wiper arm.

[0008] To solve this problem, a wiper blade is designed according to claim 1. A wiper arm for use with such a wiper blade is the subject of claim 17.

[0009] The wiper blade according to the invention is designed such that, when mechanically connected to the wiper arm or to a wiper arm adapter provided or formed on the wiper arm, the fluid connection is simultaneously established, and conversely, when the mechanical connection is released, the fluid connection is also simultaneously released or separated; thus, the connection between the wiper blade and the wiper arm is a combined mechanical and fluidic connection. This prevents damage to the individual components, in particular to the at least one hose, as well as avoids confusion regarding the connections and safety risks, especially those arising from confused and / or inadequate connections.

[0010] Further developments, advantages, and possible applications of the invention will also become apparent from the following description of exemplary embodiments and from the figures. All features described and / or illustrated are, individually or in any combination, fundamentally the subject matter of the invention, irrespective of their compilation in the claims or their cross-reference. The content of the claims is also incorporated into the description.

[0011] The invention will be explained in more detail below with reference to exemplary embodiments shown in the figures. The figures show: Fig. 1 in perspective view the wiper arm of a wiper system for vehicle windows, for example for vehicle windshields, together with a wiper blade (wet wiper blade); Fig. 2 a cut through the wiper arm of the Fig. 1; Fig. 3 in enlarged perspective partial view the wiper blade and the wiper arm together with a wiper blade adapter used to attach the wiper blade to the wiper arm; Fig. 4 in partial representation a longitudinal section through the wiper blade, through the wiper blade adapter and through the wiper arm end connected to the wiper blade or the wiper arm adapter there; Fig. 5 a cut according to line I - I of the Fig. 4; Fig. 6 in a perspective exploded view the wiper blade, the two-part wiper blade adapter provided on the wiper blade, the end of the wiper arm to be connected to the wiper blade, and connecting pieces for a hydraulic connection between the wiper arm and the wiper blade; Fig. 7 in a perspective bottom view the wiper blade adapter as well as the wiper arm end connected to the wiper blade adapter or the wiper arm adapter there; Fig. 8 in enlarged view the fastening of the wiper arm-side fluid connection pieces; Fig. 9 shows an enlarged section through one of the fluid connection pieces on the wiper arm side; Fig. 10 in simplified representation an adapter part and the wiper arm end to be connected to this adapter part in a further embodiment of the invention; Fig. 11 a cut similar Fig. 5 for a wiper blade with only one spray channel on one longitudinal side of the wiper blade.

[0012] In the figures, 1 is the wiper arm of a windshield wiper system, e.g., for the windshield of a road vehicle. The wiper arm 1 consists, in a known manner, of a bearing element 2 that can be attached to a wiper shaft of a windshield wiper drive and of a wiper rod 4 that is pivotally connected to the bearing element 2 via a wiper arm joint 3. A wiper blade 5 is interchangeably attached to the end 1.1 of the wiper arm 4, which faces away from the bearing element 2, by means of a wiper blade adapter 6. The wiper blade adapter 6 is, for example, located in the middle or approximately in the middle of the wiper blade 5.

[0013] How especially the Fig. As shown in Figure 5, the wiper blade 5 is designed as a flat wiper blade, which in the illustrated embodiment has, among other things, a flat, strip-like spring rail 7 extending over the entire length of the wiper blade, on which a wiper blade element or section 5.1 or 5.2 is arranged on both sides of the wiper blade adapter 6, and which essentially consists of a profile rail 8 made, for example, of plastic, which surrounds the spring rail 7 with a profile section 8.1 and forms a C-shaped profile section 8.2 on its underside, in which the wiper rubber 9, made of a rubber-elastic material, is held in a form-fitting manner with its wiper lip 10, which bears against the vehicle window at least during wiping operation.

[0014] A strip-like profile 11, shaped like a spoiler, is provided on the profile rail 8 of each wiper blade element 5.1 or 5.2. This profile extends from the wiper blade adapter 6 to one end of the wiper blade. Each profile 11 incorporates two distribution or spray channels 12 and 13, each extending along one longitudinal side of the wiper blade and equipped with a plurality of nozzle or spray openings 14 for applying a cleaning and washing fluid (e.g., water with cleaning and / or antifreeze additives) to the vehicle windshield. In the figures, M denotes a central plane encompassing the longitudinal extent of the wiper blade 5. In the illustrated embodiment, at least the spring rail 7, the profile rail 8, and the wiper rubber 9 with wiper lip 10 are mirror-symmetrical to this plane when the wiper blade 5 is not in contact with the vehicle windshield.

[0015] The cleaning and washing fluid is supplied to the spray channels 12 and 13 via the wiper blade adapter 6, which serves both as a mechanical connection for the detachable connection of the wiper blade 5 to the wiper arm end 1.1 and as a hydraulic connection for the detachable connection of the wiper blade 5 or the spray channels 12 and 13 to a hose line 15, which leads to a vehicle-side supply system for the cleaning and washing fluid (not shown) and, in the illustrated embodiment, is designed with two separate channels 16 and 17 and is held, for example, by means of clamps 18 on the underside of the wiper arm facing the vehicle window when the wiper arm 1 is mounted ( Fig. 2).

[0016] The wiper blade adapter 6 consists of two adapter parts 19 and 20, of which adapter part 19 is held approximately in the middle of the wiper blade on the spring rail 7, specifically by overlapping this spring rail from above in a rider-like and form-fitting manner. The underside of adapter part 19 also forms the continuation of profile section 8.2 for the form-fitting retention of the wiper rubber 9 in the area of ​​the wiper blade adapter 6.

[0017] On both longitudinal sides of the wiper blade, the adapter part 19 is provided with a distributor or T-piece 21 or 22, respectively. In the illustrated embodiment, this distributor or T-piece is a molded part connected to the adapter part 19, for example, by snapping or in another suitable manner. In principle, the connecting pieces 21 and 22 can also be manufactured integrally with the adapter part 19. Each connecting piece 21 and 22 forms a fluid or flow channel 23 for the washing and cleaning fluid. This channel section extends in the longitudinal direction of the wiper blade and is open at both ends at a section 21.1 or 22.1 designed as a connection nozzle. The channel section extends perpendicular to this channel and is open at a section 21.2 or 22.2 of the distributor piece 21 or 22, respectively, also designed as a connection nozzle.

[0018] The adapter part 20 is pivotally attached to a block- or rib-like bearing section 19.1 of the adapter part 19, overlapping the section 19.1 in a rider-like manner. For this purpose, the adapter part 20 has a substantially U-shaped cross-section consisting of the two legs 20.1 arranged on both sides of and guided by the bearing section 19.1, and the yoke section 20.2 connecting these legs and arranged above the bearing section 19.1. A pivot bolt 24, passing through the legs 20.1 and the bearing section 19.1, connects the two adapter parts 19 and 20 to form an adapter joint such that the adapter part 19 with the attached part of the wiper blade 5 can pivot about a limited angular range relative to the adapter part 20, namely about a pivot axis defined by the axis of the pivot bolt 24 perpendicular to the central plane M, to which the adapter part 20 is also designed in a mirror-symmetrical manner.

[0019] The adapter part 20 has two flow channels 25 and 26, which extend longitudinally along the adapter part 20, i.e., perpendicular to the axis of the pivot pin 24, and which, in the illustrated embodiment, are each located at the transition between a leg 20.1 and the yoke section 20.2. Each flow channel 25 and 26 terminates at a narrow or end face 27 of the adapter part 20, radially offset from the pivot pin 24, in a fluid connection 28 located therein. This connection 28 serves, as described in more detail below, to connect a channel 16 or 17 of the hose line 15 to a flow channel 25 or 26, respectively.

[0020] In the area of ​​the end face 29 facing away from the end face 27, the flow channels 25 and 26 are each provided with a radially projecting connection 30, open at this connection 30 and otherwise closed. The flow channels 25 and 26 are each connected to a flow channel 21 or 22 via the connection 30, specifically via a flexible, internal wiper blade connector 31, which is hose-like and has its ends attached to a connection 30 and to one of the connection 21.2 or 22.2, thus establishing a hydraulic connection between the flow channel 25 and the flow channel 21, and between the flow channel 26 and the flow channel 22.The connecting pieces 31 are each bellows-shaped in their central area and made of a highly flexible material (e.g., EPDM or TPE), so that the two connecting pieces 31 not only provide an externally sealed fluid or hydraulic connection, but also allow the adapter part 19 to pivot relative to the adapter part 20 without any disruptive torque exerted by the connecting pieces 31 that would oppose the pivoting movement. A cap 32, which is attached to the adapter part 20, for example, by snapping it into place, covers the wiper blade adapter 6 as well as the connecting pieces 31 at the end face 29.

[0021] The wiper blade adapter 6 or all parts of this wiper blade adapter including the cap 32 and excluding the pivot bolt 24 are preferably made of a suitable plastic.

[0022] The wiper blade adapter 6 allows the wiper blade 5 to be detachably or interchangeably attached to the wiper arm end 1.1, in the illustrated embodiment by sliding it onto the wiper arm end 1.1 and locking it into place. For this purpose, the wiper arm 1 is designed at its end 1.1 as a wiper arm adapter 33 with an adapter receptacle 33.1 or is provided with such a wiper arm adapter, the adapter receptacle 33.1 of which is designed for a positive-locking reception of the adapter part 20, by inserting the adapter part 20 into the adapter receptacle 33.1 in a joining direction or axis X, which in the illustrated embodiment is an axial direction radial or approximately radial to the axis of the pivot bolt 24 and parallel or approximately parallel to the longitudinal extent of the wiper blade.

[0023] The wiper arm adapter 33, forming the adapter receptacle 33.1, is designed in cross-section as a U-profile open at its free end and at the underside of the wiper arm 1, with two legs 34 and a yoke section 35 connecting these legs. At their edge furthest from the yoke section 35, the legs 34 are each provided with an angled projection 36 extending inwards into the U-profile, so that, after the adapter part 20 has been inserted into the adapter receptacle 33.1 from the end 1.1 of the wiper arm, the legs 34 and the yoke section 35 engage the adapter part 20 in a rider-like and form-fitting manner, and the angled projections 36 engage the adapter part 20 on its underside facing the adapter part 19 or on a locking surface 37 located there.

[0024] To secure the mechanical connection between the wiper blade adapter 6 and the wiper arm 1, the adapter part 20 is provided on its upper side, facing away from the wiper blade 5, with a spring-loaded detent 38 for locking into an opening 39 on the yoke section 35, which serves as a counter-detent. In the illustrated embodiment, the detent 38 is designed as a square or substantially square projection on a spring-loaded tongue 38.1, which, like the projection 38, is manufactured integrally with the adapter part 20.

[0025] A special feature of the wiper blade 5 or the wiper blade adapter 6 is that the mechanical connection of the wiper blade adapter 6 to the wiper arm 1 simultaneously establishes the fluid connection between the channels 16 and 17 and each of the flow channels 25 and 26. For this purpose, two sleeve-like connecting pieces 40 and 41 are provided in the adapter receptacle 33.1. Their axes are oriented in the assembly direction X, parallel to each other, and spaced apart, such that after the adapter part 20 is inserted into the adapter receptacle 33.1, each connecting piece 40 and 41 lies at or approximately at the same axis as the axis of a connection opening 28.

[0026] The two connecting pieces 40 and 41 are axially non-displaceable with a retaining element 42 made of a suitable material, for example plastic, but are otherwise held movable at their ends in axial directions perpendicular to the joining direction X within certain limits, as indicated in the figures by the double arrows Y and Z.

[0027] The retaining element 42 is essentially U-shaped with two lateral legs or U-arms 43 and a yoke 44 connecting the U-arms 43. Each U-arm 43 is adjacent to an integrally formed retaining arm 45, so that a clip-type retaining section 46 is formed between each U-arm 43 and the adjacent retaining arm 45. The respective connecting piece 40 can be attached to this retaining section by lateral or radial sliding and snapping into place, such that the respective U-arm 43 and also the associated retaining arm 45 are at least partially received in a circumferential groove 47. The connecting piece 40 or 41 has a section 48 with an enlarged outer diameter formed between the ends of the connecting pieces.

[0028] The retaining element 42, mounted with the connecting pieces 40 and 41, is in turn held by snapping into the interior of the U-profile of the wiper arm adapter 33, in such a way that the U-shaped retaining element 42 is oriented perpendicular to the joining direction X with the common U-shaped plane of the U-shaped arms 43, the yoke piece 44 and the retaining arms 45, with the side of the U-shaped arms 43 and the yoke piece 44 facing away from the connecting pieces 40 and 41 bearing against the inner surface of the wiper arm adapter 33 in the area of ​​the legs 34 and the yoke section 35 and with lateral projections 43.1, which are formed at the free ends of the U-shaped arms 43, engages in a snapping manner in an opening 49 which is provided in each leg 43.

[0029] At one end extending beyond section 48, each connector 40 and 41, or the flow channel 40 formed in this connector, is connected to a flow channel 16 or 17 of the hose line 15, which is split within the wiper arm adapter 33. The other end 40.2 or 41.2 of each connector 40 or 41, extending beyond section 48, serves as a coupling section. When the wiper blade adapter 6 is pushed onto the wiper arm adapter 33, this coupling section is inserted into a connection opening 28 to establish the fluid connection and forms a fluid coupling with this connection opening 28.

[0030] As the figures show, sections 40.2 and 41.2 are each provided with a conical surface 50 at their free ends. The connection openings 28 are also chamfered accordingly at their free edges, so that when the wiper blade adapter 6 is pushed onto the wiper arm adapter 33, the self-centering of the connecting pieces 40 and 41 (double arrows Y and Z), which are movable axially perpendicular to the joining direction X, ensures secure insertion of these connecting pieces 40 and 41, or rather their coupling sections 40.2 and 41.2, into the respective connection opening 28. For an externally sealed connection, each connecting piece 40 and 41 is provided with a ring seal 51 on its coupling section 40.2 and 41.2, respectively, which is received in a circumferential groove.

[0031] The wiper blade adapter 6, or rather its adapter part 20, and the wiper arm adapter 33 thus form a releasable combined mechanical and fluidic connection 52 with a fluid coupling between the wiper arm 1 and the wiper blade 5. By inserting and locking the adapter part 20 onto the wiper arm adapter 33, or into the adapter receptacle 33.1 therein, not only the mechanical connection but also the fluid connection between the hose 15 and the wiper blade 5, or rather the spray channels 12 and 13 therein, is automatically established. Conversely, when the wiper blade 5 is mechanically separated from the wiper arm 1, the fluid connection is automatically broken. Cumbersome manipulations during assembly and / or when replacing the wiper blade 5 to establish or break the fluid connections are thus avoided.

[0032] The Fig. Figure 10 shows a simplified embodiment in which the detachable fluid connection of the combined mechanical and fluidic connection 52a is realized by providing connection pieces 53 instead of connection pieces 40 and 41, the connection pieces 53 having a connection opening 54 corresponding to the connection opening 28 on their coupling section. The flow channels on the adapter part 20 are located there, of which in the Fig. Figure 8 shows only the flow channel 25, which is provided with a connecting nozzle 55 with a ring seal 56 that can be inserted into the respective connection opening 54 and forms part of the respective flow channel 25 or 26. In this embodiment as well, the connecting pieces 53 are again oriented with their axes parallel to the joining direction X and held by the clamping element 42 such that the connecting pieces 53 are not axially displaceable or substantially not displaceable in the joining direction X, but are otherwise movable in the axial directions perpendicular to the joining direction X for self-centering during the formation of the fluid connection.

[0033] The Fig. Finally, section 11 shows in a representation how Fig.5 as a further possible embodiment a wiper blade 5a, which differs from the wiper blade 5 in that a spray channel, for example the spray channel 12 with the associated spray openings 14, is provided only on one longitudinal side of the wiper blade. Accordingly, in this embodiment, the wiper blade adapter 6 also has only one internal fluid connection, namely, for example, with the single flow channel 25 in the adapter part 20, which is then fluidically connected via the combined mechanical and fluidic connection 52 or 52a to a channel, for example the channel 16 of the hose line 15. Reference symbol list 1 wiper arm 1.1 Wiper arm end 2 bearing element 3 wiper arm joint 4 Wiper arm section or wiper pole 5, 5a wiper blade 5.1, 5.2 Wiper blade section 6 wiper blade adapters 7 Spring rail 8 profile rail 8.1, 8.2 Profile section 9 wiper blades 10 wiper blade 11 spoiler-like wiper blade element 12, 13 spray channel 14 Nozzle or spray opening 15 hose line 16, 17 Channel of hose line 15 18 bracket 19, 20 adapter part 19.1 Storage section 20.1 Leg of the adapter part 20 20.2 Yoke section of the adapter part 20 21, 22 T-piece or distributor 21.1, 21.2 Connection spigot 22.1, 22.2 Connection spigot Channel 23 24 hinge bolts 25, 26 Flow channel 27 Front 28 Connection or coupling opening 29 Front 30 connection spigots 31 Connecting piece 32 cap 33 wiper arm adapters 33.1 Adapter mount 33.1 Adapter mount of the wiper arm adapter 34 thighs 35 Joch section 36 angulation 37 Locking surface or section 38 Rest 38.1 Spring tongue 39 Opening 40, 41 connector 40.1, 41.1 Connecting section 40.2, 41.2 Coupling section 42 Holding element 43 Ironing arm 43.1 Section 44 Yoke piece 45 Holding arm 46 clip-like holding section 47 circumferential groove 48 Section of the connecting piece 40 or 41 49 Rest opening 50 cone area 51 sealing ring 52, 52a combined mechanical and fluidic connection 53 Connector 54 Connection or coupling opening 55 connection spigots 56 ring seal M Middle level X Direction of travel Y, Z axis direction perpendicular to the joining direction X

Claims

[1] Wiper blade for cleaning vehicle windows, with at least one wiper blade body (7, 8, 11) extending in the longitudinal direction of the wiper blade, with at least one wiper rubber (9) forming at least one wiper lip (10) 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) to a wiper arm (1) or a wiper arm adapter (33) thereon, and with at least one nozzle opening (14) provided on the wiper blade (5, 5a), which can be connected to a vehicle-side supply system for supplying a cleaning and washing fluid via a fluid connection (28, 55) on the wiper blade, wherein the at least one wiper blade-side fluid connection (28, 55) is part of a fluid coupling (28, 54; 41, 42, 55), via which the fluid connection with the vehicle-side supply system is simultaneously established or released when the wiper blade (5, 5a) is mechanically connected to the wiper arm (1) or when this mechanical connection is released, wherein the at least one wiper blade-side fluid connection (28) is formed by an opening which receives a nozzle-like connection piece (40, 41) on the wiper arm side and having at least one fluid channel, or wherein the wiper blade-side fluid connection (28) is formed by a connection piece (55) which is received in an opening (54) of a wiper arm-side fluid connection (40, 41, 53), and wherein a wiper blade-side fluid connection (23, 25, 26, 31), which connects the at least one nozzle opening (14) to the at least one wiper blade-side fluid connection (28, 55), has at least one flow channel (23) formed in or on a first adapter part (19) of the wiper blade adapter (6). [2] Wiper blade according to claim 1, characterized by that the at least one flow channel (23) is connected to at least one spray channel (12, 13) on a longitudinal side of the wiper blade (5). [3] Wiper blade according to claim 1 or 2, characterized bythat the wiper blade adapter (6) consists of the first adapter part (19) on the wiper blade body (7, 8, 11) and of a second adapter part (20) which is connected to the first adapter part (19) via an adapter joint (24). [4] Wiper blade according to one of the preceding claims, characterized by that the first adapter part (19) is held on a spring rail (7) approximately in the middle of the wiper blade, and this spring rail (7) overlaps from the top side in a rider-like and form-fitting manner. [5] Wiper blade according to claim 4, characterized by that the first adapter part (19) forms on its underside a continuation of a profile section (8.2) for the positive holding of the wiper rubber (9) in the area of ​​the wiper blade adapter (6). [6] Wiper blade according to one of the preceding claims, characterized bythat the wiper blade is designed as a flat wiper blade with a wiper rubber (9) held on at least one profile rail (8) and with at least one spring rail (7) and / or that the wiper rubber (9) is provided replaceably on the wiper blade body (7, 8, 11). [7] Wiper blade according to one of the preceding claims, characterized by that the wiper blade-side fluid connection (55) is a connection piece having at least one fluid channel, which is designed to interact with a connection opening (54) of a wiper arm-side connection piece. [8] Wiper blade according to one of the preceding claims, characterized by that the second adapter part (20) is designed for a mechanical connection to a wiper arm (1) or a wiper arm adapter (33) and with at least one guide which defines a guide or joining axis (X) for guiding the second adapter part (20) on the wiper arm (1) during mechanical connection or detachment. [9] Wiper blade according to claim 8, characterized by that the second adapter part (20) has at least one wiper blade-side fluid connection (28, 55). [10] Wiper blade according to claim 8 or 9, characterized by that the at least one wiper blade-side fluid connection (28, 55) is oriented with its axis parallel to or in the direction of the guide or joining axis (X). [11] Wiper blade according to one of claims 8 to 10, as far as it refers back to claim 3, characterized by that the guide or joining axis (X) is defined 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 to or in the direction of the guide or joining axis (X). [12] Wiper blade according to one of claims 8 to 11, characterized bythat at least two wiper blade-side fluid connections (28, 55) are provided on a common side (27) of the second adapter part (20) offset in an axial direction perpendicular or transverse to the joining and guide axis (X). [13] Wiper blade according to claim 2 or one of claims 3 to 12, as far as dependent on claim 2, characterized by that the wiper blade-side fluid connection (23, 25, 26, 31) has the at least one spray channel (12, 13) extending along a longitudinal side of the wiper blade (5) and provided with the at least one nozzle opening (14). [14] Wiper blade according to claim 13, characterized by that the spray channel (12, 13) is provided with a plurality of nozzle openings (14). [15] Wiper blade according to claim 3 or one of claims 4 to 14, as far as dependent on claim 3, characterized by that the flow channel (23) of the wiper blade-side fluid connection (23, 25, 26, 31) bridges the adapter joint (24). [16] Wiper blade according to claim 15, characterized by that the flow channel (23) is formed by a flexible hose-like connecting piece (31) which is offset and / or bellows-like and / or curved with respect to at least one joint axis of the adapter joint (24). [17] Wiper arm for use with a wiper blade (5, 5a) according to one of the preceding claims, with a wiper arm adapter (33), to which the wiper blade (5, 5a) can be mechanically releasably connected to a wiper blade adapter (6) by joining in at least one joining direction (X) and locking, and with at least one fluid line (15) leading to the wiper arm adapter (33) and connectable to a wiper blade-side fluid connection (28, 55) for supplying a cleaning and washing fluid, wherein at least one wiper arm-side fluid connection (40, 41, 53) is provided in or on the wiper arm adapter (33), via which the fluid connection between the at least one fluid line (15) provided on the wiper arm (1) and the wiper blade-side fluid connection (28, 55) is simultaneously established during the mechanical connection of the wiper blade (5, 5a) to the wiper arm (1). wherein the at least one wiper arm-side fluid connection (40, 41,53) is designed as a connecting piece insertable into an opening of the wiper blade-side fluid connection (28) or is provided with an opening (54) for receiving a connecting piece (55) forming the wiper blade-side fluid connection (28). [18] Wiper arm according to claim 17, characterized by that the at least one wiper arm-side fluid connection (40, 41, 53) is provided for self-centering in at least one axial direction (Y, Z) perpendicular to the joining direction (X) in or on the wiper arm adapter (33). [19] Wiper arm according to claim 17 or 18, characterized by that the at least one wiper arm-side fluid connection (40, 41, 53) is fastened with at least one bracket-like holding element (42). [20] Wiper arm according to claim 19, characterized by that the at least one wiper arm-side fluid connection (40, 41, 53) is fastened to the at least one bracket-like holding element (42) by locking on or in the wiper arm adapter (33). [21] Wiper arm according to one of claims 17 to 21, characterized by that the wiper arm adapter (33) with a U-profile or C-profile has an adapter receptacle (33.1) for the positive connection of the wiper blade adapter (6) to the wiper arm (1), and that the at least one wiper arm-side fluid connection (40, 41, 53) is provided within the adapter receptacle (33.1). [22] An assembly comprising a wiper blade according to any one of claims 1 to 16 and a wiper arm according to any one of claims 17 to 21. [23] Use of a wiper blade according to one of claims 1 to 16 with a wiper arm according to one of claims 17 to 21.

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