Spray device for a wiper device

Abstract

The invention relates to a module (101) for a spray device (100) for use in a wiping device (A) of a vehicle window, in particular a rear window, exhibiting: - a coupling piece (10) for mechanically attaching the module (101) of the spraying device (100) to a drive element (3) of the wiping device (A), which can be rotatably driven about a drive axis (D3) in particular by means of a wiper drive, and for hydraulically connecting the spraying device (100) to a supply line (W) for a cleaning fluid (F), which runs in particular through the drive element (3) and preferably along the drive axis (D3), - wherein the coupling piece (10) has a first line section (L1) for conveying the cleaning fluid (F) from the supply line (W), - and a pipe (20) for hydraulically connecting a spray bar (30) and / or a spray piece (40) of the spraying device (100) to the coupling piece (10), - wherein the pipe (20) has a second conduit section (L2) for conveying the cleaning fluid (F) from the first conduit section (L1).

Description

[0001] The invention relates to a module for a spray device, in particular one of modular construction, for use in a wiper device for a vehicle window, and to a corresponding spray device, in particular one of modular construction, for a wiper device for a vehicle window, in particular a rear window. Furthermore, the invention relates to a corresponding wiper device for a vehicle window.

[0002] Spray devices for vehicle windshield wiper systems are generally known. Spray devices are used to supply a cleaning fluid to the wiper systems for cleaning vehicle windshields. One spray device is known, for example, from the publication DE 10 2015 114 933 A1. However, known spray devices have the disadvantage that they can only be used with specially designed wiper devices, which must have special openings, passages, and fastening elements for the spray devices. Using such spray devices with differently designed wiper devices or with wiper devices that do not have an integrated cleaning function is therefore not possible without replacing the entire wiper device or undergoing extensive modification. Furthermore, it has been found that the known spray devices have a complex design and require increased assembly effort.In addition, replacing wiper blades with conventional spray devices is complicated, and the cleaning hoses of the spray devices can become stressed, twisted, stretched, and even deformed. Another spray device is known, for example, from DE 10 2012 107 232 A1.

[0003] The invention is therefore based on the object of providing an improved module for a, preferably modularly constructed, spray device for use in a wiper device of a vehicle window, as well as an improved, preferably modularly constructed, spray device for a wiper device of a vehicle window, in particular a rear window, which at least partially overcome the above-mentioned disadvantages. In particular, the object of the invention is to provide a module for a, preferably modularly constructed, spray device, as well as a corresponding, preferably modularly constructed, spray device for a wiper device of a vehicle window, in particular a rear window, which are simply constructed and can be mounted on different wiper devices without great effort, even on wiper devices that do not have an integrated cleaning function and which do not require complex conversion for this purpose.Furthermore, it is an object of the invention to provide such a module for a spray device and such a spray device which are robust in the standard operation of the wiper devices, which enable easy replacement of wiper blades on the wiper devices, which reliably protect all hoses from stretching, compression, bending, twisting and / or deformation and which have an extended service life.

[0004] The object of the invention is achieved by: a module for a spray device for use in a wiper device for a vehicle window according to the independent device claim, a spray device for a wiper device for a vehicle window, in particular a rear window, according to the independent device claim, and a corresponding wiper device for a vehicle window according to the further independent device claim. Features described in connection with individual aspects of the invention naturally also apply in connection with the other aspects of the invention, and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is always made to each other.

[0005] The invention provides, according to a first aspect, a module for a spray device for use in a wiper device of a vehicle window, in particular a rear window, comprising: - a coupling piece for mechanically fastening the module of the spray device to a drive element of the wiper device, which can be driven in particular by means of a wiper drive so as to be rotatable about a drive axis, and for hydraulically connecting the spray device to a supply line for a cleaning fluid, which runs in particular through the drive element and preferably along the drive axis, - wherein the coupling piece has a first line region for forwarding the cleaning liquid from the supply line, - and a pipe for hydraulically connecting a spray bar and / or a spray head of the spraying device to the coupling piece, - wherein the pipe has a second conduit portion for conveying the cleaning fluid from the first conduit portion.

[0006] A wiper device within the scope of the invention can have a wiper drive that drives a drive element so that it can rotate about a drive axis. A wiper head of the wiper device can be non-rotatably attached to the drive element. A wiper arm can be attached to the wiper head so that it can be folded or pivoted about a folding axis. A wiper blade can be attached to the wiper arm so that it can rotate about a rotation axis and can be replaced. The wiper blade serves to clean the vehicle windshield.

[0007] Vehicle windows usually have curved surfaces. When the wiper arm is moved during normal operation of the wiping device, the wiper blade is raised or lowered by the curved surface of the vehicle window depending on the position of the wiper arm relative to the wiper head. When the wiper blade is raised relative to the wiper head, the wiper arm can fold or swivel around the folding axis, for example, in a range of 0° to approximately 5°. This folding or swivel movement of the wiper arm around the folding axis allows the wiper arm to follow the curvature of the surface of the vehicle window, so that the wiper blade can rest on the surface of the vehicle window in any position of the wiper arm. To replace the wiper blade, the wiper arm can be folded out by approximately 70° relative to the vehicle surface.

[0008] The drive axis runs essentially perpendicular to the surface of the vehicle windshield. The folding axis runs essentially parallel to the surface of the vehicle windshield, allowing the wiper arm to be folded open relative to the vehicle windshield.

[0009] After the wiper device has been assembled, the wiper arm and wiper head can rotate around the drive shaft to ensure normal operation of the wiper device for cleaning the vehicle windshield.

[0010] In order to replace a wiper blade on the wiper arm, the wiper arm is pivoted around the folding axis relative to the wiper head and thus opened relative to the vehicle windscreen.

[0011] A spray bar and / or a spray nozzle can be arranged on the wiper arm, which can be equipped with spray nozzles and / or simple spray openings. Hoses are often required to supply cleaning fluid from a supply line to the spray bar and / or the spray nozzle on the wiper arm. The hoses must be routed in such a way as to allow rotational movements of the wiper arm with the wiper head around the drive axis and to allow folding and / or pivoting movements of the wiper arm relative to the wiper head around the folding axis.

[0012] The invention recognizes the problem of laying the hoses for a spray device within a wiper device and the problem of length compensation and / or angle compensation on the hoses during normal operation as well as during replacement of wiper blades.

[0013] For this purpose, the invention proposes two simple and cost-effective components within the module for the spray device in order to provide a simple, compact, robust module that is safe in normal operation and in the replacement operation of wiper blades, which module can advantageously be combined as desired with a spray bar and / or a spray piece to form a modular spray device.

[0014] First, the invention proposes a coupling piece that can be made, in particular, of a dimensionally stable and stable material. The coupling piece has two advantageous functions.

[0015] According to the first function, the coupling piece serves to mechanically fasten the spray device module to the drive element of the wiper device, which is driven by the wiper drive to rotate about the drive axis during normal operation of the wiper device. According to the first function, the coupling piece is designed as a fastening element. The coupling piece can have a fastening means, e.g. in the form of an undercut, which can be formed e.g. within a sleeve-shaped fastening area on the coupling piece and which serves to fasten the coupling piece to the drive element in a form-fitting and / or force-fitting and thus rotationally fixed manner. The coupling piece can therefore rotate about the drive axis with the drive element during normal operation of the wiper device. However, the coupling piece also remains attached to the drive element when wiper blades are being replaced.

[0016] According to the second function, the coupling piece serves to hydraulically connect a spray bar and / or a spray piece of the spray device to the supply line for a cleaning fluid. The supply line can advantageously run through the drive element and in particular along the drive axis. The supply line supplies the cleaning fluid, e.g. from a container. The fastening area of ​​the coupling piece can be placed coaxially on the supply line in the drive element. The coupling piece can also have a protruding connection piece onto which a pipe can be pushed. The first line area for conveying the cleaning fluid from the supply line to the spray bar and / or the spray piece of the spray device, which can be attached to the wiper arm, runs through the coupling piece and the connection piece.

[0017] Secondly, the invention proposes a pipe, which can be formed, in particular, from an elastic and / or flexible material. The pipe functions to provide a second conduit section for conveying the cleaning fluid from the first conduit section.

[0018] The tube can advantageously be designed, in particular shaped, and preferably have a folding region such that all changes in length and / or position (changes in position can also be referred to as changes in angle) in the spray device and in the wiper device, during the movements of the wiper head and the wiper arm, be it during the relative movements of the wiper arm and the wiper head to one another about the folding axis, e.g., for the purpose of replacing wiper blades or during normal operation of the wiper device, or during the joint movements of the wiper head and the wiper arm about the rotation axis during normal operation of the wiper device, can be compensated for. The folding region can also be referred to as a curved region.

[0019] During normal operation of the wiper device, the tube can advantageously rotate around the drive axis with the drive element and the coupling piece, provided the supply line runs through the drive element and, in particular, along the drive axis. During wiper blade replacement, the tube can continue to reliably accommodate all length and / or position changes in the spray device and the wiper device.

[0020] The coupling piece and the pipe form the module according to the invention for a spray device, in particular one with a modular design. The coupling piece and the pipe can be combined as desired with a spray bar and / or a spray piece to provide a flexibly assembled spray device. Such a modular spray device can be attached easily and without great effort to differently designed wiper devices, even to wiper devices that do not have an integrated cleaning function. Advantageously, the wiper devices do not need to be laboriously converted for this purpose. The module, the spray bar and / or the spray piece together form a modular spray device. The spray bar and / or the spray piece can each form one or two parts of the spray device, individually or in combination with one another.

[0021] The invention, with the aid of the module, provides a simple, compact, robust, and reliable spraying device that is simple in design, can be flexibly configured, and can be easily mounted on various wiping devices, even those that previously lacked an integrated cleaning function. Advantageously, the wiping devices do not require any complex modifications.

[0022] According to the invention, the pipe is designed for length compensation (or as protection against stretching and / or compression for all hoses) and / or position compensation or angle compensation (or as protection against bending and / or twisting for all hoses) in the spray device, namely in the case of: - Folding and / or pivoting movements of a wiper arm relative to a wiper head around a folding axis, and / or - Rotational movements of a wiper arm and a wiper head about a drive axis, wherein in particular the wiper head can be fastened to the drive element in a rotationally fixed manner.

[0023] The pipe can advantageously have a folding area in order to compensate for changes in length and / or position in the spray device during the pivoting movements of a wiper arm relative to a wiper head about a folding axis and / or during the rotational movements of the drive element and a wiper head together with the wiper arm about a drive axis. Advantageously, the folding area can be used to absorb and compensate for all changes in length and / or position in the spray device and in the wiper device. The folding area can also advantageously serve to prevent kinks, deformations, stretching, or compression on the pipe, particularly between a transition section and a transfer section of the pipe.

[0024] The folding area can have at least one or more, preferably U-shaped or Ω-shaped, folds. The fold or folds can fold together or unfold and thus serve to compensate for length and / or position or angle. The fold or folds can enable relative movements between the transition section and the transfer section of the pipe, which can be achieved by folding and / or pivoting movements of a wiper arm relative to a wiper head about a folding axis and / or by rotating movements of the wiper arm together with the wiper head about a drive axis. In this way, local stresses, deformations and kinks on the pipe can be reliably prevented. Thus, the folding area can provide protection against stretching and / or compressing as well as bending and / or twisting of the pipe.

[0025] Furthermore, it can be provided that the folding region can be arranged in a lower region of the wiper head which faces the vehicle windscreen, and / or that the folding region unfolds, in particular initially (meaning when unfolding a wiper arm relative to a wiper head during wiper blade replacement), into a surface which extends parallel to the surface of the vehicle windscreen, and preferably enables a pulling apart (of the folding region), preferably in a rotated position, upon further movement (meaning a movement of the wiper arm relative to the wiper head). In this way, the region of the tube which ensures length compensation and / or position compensation or angle compensation can be arranged in the lower region of the wiper head.

[0026] Specifically, it can be provided that the folding area can be arranged below a clamping piece of the wiper head, and / or that the folding area can be arranged outside a clamping piece of the wiper head, in particular exposed with respect to the clamping piece. The clamping piece of the wiper head can also be referred to as a connecting piece with respect to the drive element of the wiper device. This eliminates the need to redesign the wiper head and in particular the clamping piece or the connecting piece in order to be able to install hoses with a sufficient bending radius, since all changes in length and / or position in the spray device can be compensated for below and preferably outside a clamping piece.

[0027] Furthermore, it can be provided that the tube has a, in particular straight, transition section which connects the coupling piece, which can be arranged in an upper region of a wiper head facing away from the vehicle window, with a folding region which can be arranged in a lower region of the wiper head facing the vehicle window. The transition section can run essentially parallel to a drive axis about which the drive element is rotatably driven. The transition section can advantageously be arranged laterally, in particular outside and preferably exposed with respect to a clamping piece of the wiper head, and / or below a cap of the wiper head. With the aid of the transition section, the tube can be laid from above the clamping piece to below the clamping piece.

[0028] Furthermore, the pipe can be provided with a connecting section for hydraulic connection to the coupling piece. The connecting section can be easily pushed over a connecting piece of the coupling piece.

[0029] In addition, the coupling piece can be provided with a connecting piece for hydraulic connection to the pipe. This allows for a simple coupling piece for the supply line. It is conceivable that the connecting section of the pipe can be expanded and slipped over the connecting piece of the coupling piece.

[0030] Furthermore, the connecting piece of the coupling piece can be provided with at least one locking element, particularly in the form of a barb, which digs into the material of the pipe. This allows the pipe to be easily and securely opened at the connecting piece.

[0031] Furthermore, it is also conceivable that the coupling piece and the pipe could be designed as a two-component injection-molded component. This eliminates an assembly step for attaching the pipe to the connecting piece.

[0032] Advantageously, it is conceivable for the coupling piece to be made of a dimensionally stable and / or stable material, in particular plastic, preferably thermoplastic. This allows for a reliable and stable attachment of the coupling piece to the drive element.

[0033] The tube, in turn, can comprise an elastic and / or flexible material, in particular plastic, preferably elastomer. In this way, a tube with flexible and / or expandable inserts can be provided.

[0034] Furthermore, in a module for a spray device, the coupling piece can be provided with a head region for covering the supply line, which runs in particular through the drive element and preferably along a drive axis. The head region can preferably have a ball closure for an end of the first line region that faces away from the connection piece and thus away from the pipe. Other closure mechanisms for the end of the first line region are also conceivable, e.g., by gluing, sealing, covering, etc.

[0035] Furthermore, in a module for a spraying device, the coupling piece can be provided with a collar region, in particular a sleeve-shaped one. The collar region can extend circumferentially around or coaxially with a fastening region of the coupling piece. The collar region can provide a gripping area when mounting the coupling piece on the drive element.

[0036] Furthermore, in a module for a spray device, the coupling piece can be provided with a fastening area, in particular a sleeve-shaped one, for fastening to the drive element. The fastening area can be fastened to the drive element coaxially to the supply line. The fastening area can have an undercut, which can be designed to correspond to an undercut on the drive element in order to fasten the coupling piece to the drive element in a form-fitting and / or force-fitting manner. Instead of undercuts, a thread and counter-thread can be provided. All other possible locking and / or clip elements for establishing a form-fitting and / or force-fitting connection between the coupling piece and the drive element are also conceivable.

[0037] Furthermore, a groove can be formed between the collar area and the fastening area, which can ensure a certain freedom of movement between the collar area and the fastening area when fastening the coupling piece to the drive element.

[0038] According to a second aspect, the invention provides a spray device for a wiper device of a vehicle windshield, comprising a module, which can be designed as described above, and at least one spray bar and / or one spray piece that is / are hydraulically connected to the tube. The spray device according to the invention can advantageously achieve the same advantages described above in connection with the module according to the invention. These advantages are incorporated herein by reference.

[0039] Advantageously, the spray bar and / or the spray piece can have an inlet connection for the pipe, or conversely, the pipe can have an inlet connection for the spray bar and / or the spray piece. At the same time, it is conceivable that the pipe can be easily pushed onto the spray bar and / or the spray piece.

[0040] At least one spray nozzle and / or at least one spray opening can be formed on the spray bar and / or the spray piece. In this way, desired cleaning functions can be provided.

[0041] Preferably, the spray strip and / or the spray piece can be designed for attachment to a wiper arm. Advantageously, the spray strip and / or the spray piece can have at least one fastening element, which can, for example, be designed to correspond to a mating fastening element on a wiper arm, in order to fasten the spray strip and / or the spray piece to the wiper arm in a form-fitting and / or force-fitting manner. At the same time, however, it is also conceivable for the spray strip and / or the spray piece to be fastened to a wiper arm in a material-fitting manner, for example, using an adhesive or a welding process.

[0042] According to a third aspect, the invention provides a corresponding wiping device with at least one spraying device, which can be designed as described above. The wiping device according to the invention can advantageously achieve the same advantages as those described above in connection with the module according to the invention and / or the spraying device according to the invention. These advantages are incorporated herein by reference.

[0043] They show: Fig. 1 a schematic representation of a wiper device according to the invention in a view from above onto a wiper arm, Fig. 2 a schematic representation of a wiping device according to the invention in a side view with a transparent cap on a wiper head and a transparent spring box on a wiper arm, so that a spray device according to the invention is visible, Fig. 3 a schematic representation of a wiper device according to the invention in a view from below onto a wiper arm, so that a spray device according to the invention appears, Fig. 4 an enlarged representation of a wiper device according to the invention in a side view with a transparent cap on a wiper head and a transparent spring box on the wiper arm, so that a spray device according to the invention is visible, Fig. 5 a schematic representation of a wiper device according to the invention in a front view of a wiper arm and a sectional view through the wiper arm of this wiper device, Fig. 6 a schematic representation of a module according to the invention for a spray device in the sense of the invention in a standalone position, combined for example with a spray bar, Fig. 7 is a schematic representation of a spray bar which can be combined with a module according to the invention as part of a spray device according to the invention, Fig. 8 a schematic representation of a wiper device according to the invention in an enlarged view of a wiper arm and a sectional view through the wiper arm of this wiper device, Fig. 9 is a schematic representation of a module according to the invention for a spray device, attached to a drive element of a wiper device in a perspective view with a cap on the wiper head and with a transparent cap on the wiper head, Fig. 10 is a schematic representation of a module according to the invention for a spraying device, attached to a drive element in a perspective view and in a sectional view, Fig. 11 a schematic representation of a module according to the invention for a spraying device, attached to a drive element in a further view and in a sectional view.

[0044] In the following figures, identical reference numerals are used for the same technical features, even in different embodiments. As a rule, the reference numerals of the same embodiments are described only once.

[0045] The Fig. 1 shows an exemplary wiper device A for a vehicle window, in particular a rear window, which can be upgraded with a spray device 100 according to the invention. The spray device 100 according to the invention is advantageously modular in design so that it can be attached to differently configured wiper devices A. The spray device 100 according to the invention comprises a module 101 according to the invention and at least one spray bar 30 and / or a spray piece 40.

[0046] A wiper device A can have a drive element 3 that is rotatably driven about a drive axis D3, e.g., electrically. A wiper drive for driving the drive element 3 is not shown in the figures solely for reasons of simplicity. A wiper head 300 of the wiper device A can be non-rotatably attached to the drive element 3. A wiper arm 200 can, in turn, be attached to the wiper head 300 so that it can be folded or pivoted about a folding axis D2. A wiper blade 1 can be attached to the wiper arm 200 so that it can be rotated about a rotation axis D1 and can be replaced. The wiper blade 1 serves to clean the vehicle window. The vehicle window is also not shown solely for reasons of simplicity.

[0047] As it is from the Fig. 1, the drive axis D3 runs essentially perpendicular to the folding axis D2, which in turn can be positioned essentially parallel to the surface of the vehicle window. The folding axis D2 can serve to apply the wiper blade 1 to the vehicle window in a spring-elastic manner during normal operation of the wiper device A. For this purpose, a spring arrangement 203 can be provided in a spring box 202 in the wiper arm 200. During replacement operation for the wiper blade 1 on the wiper device A, the folding axis D2 can serve to fold the wiper arm 200 open relative to the vehicle window, for example in order to replace the wiper blade 1, as indicated by the arrow in the Fig. 3. During normal operation of the wiper device A, the wiper arm 200 rotates with the wiper head 300 around the drive axis D3.

[0048] A spray bar 30 and / or a spray nozzle 40 can be arranged on or in the wiper arm 200. Hoses are generally required to supply a cleaning fluid F from a supply line W to the spray bar 30 and / or the spray nozzle 40 on the wiper arm 200. However, the hoses must be routed in such a way that the wiper arm 200 can rotate with the wiper head 300 about the drive axis D3 and pivot the wiper arm 200 relative to the wiper head 300 about the folding axis D2, and that these movements do not place excessive strain on the hoses.

[0049] The Fig. 2, Fig. 3 and Fig. 4 serve to illustrate a spraying device 100 according to the invention, which is designed with a module 101 according to the invention. The module 101 according to the invention is shown in the Fig. 9, Fig. 10 and Fig. 11. Module 101 includes firstly: - a coupling piece 10 for mechanically fastening the module 101 to the drive element 3 of the wiper device A, which can be driven rotatably about the drive axis D3 by means of the wiper drive, and for hydraulically connecting the spray device 100 to a supply line W for a cleaning liquid F, which runs in particular through the drive element 3 and preferably along the drive axis D3 (see the Fig. 10 and Fig. 11).

[0050] Here, the coupling piece 10 has a first line area L1 for forwarding the cleaning liquid F from the supply line W, see the Fig. 10 and Fig. 11.

[0051] Secondly, Module 101 includes: - a pipe 20 for hydraulically connecting a spray bar 30 and / or a spray piece 40 of the spray device 100 to the coupling piece 10.

[0052] Here, the pipe 20 has a second line area L2 for forwarding the cleaning liquid F from the first line area L1.

[0053] The invention recognizes the problem of laying the hoses for a spray device 100 within a wiper device A and the problem of length compensation and / or angle compensation on the hoses during normal operation as well as during replacement of wiper blades on the wiper device A.

[0054] The invention proposes two simple and cost-effective components 10, 20 within the scope of the inventive module 101 for a modular spray device 100 in order to provide a simple, flexibly assembled, compact, robust, and reliable spray device 100. The inventive module 101 can further be combined as desired with a spray bar 30 and / or a spray piece 40 within the scope of the modular spray device 100.

[0055] Firstly, in a module 101 for a spraying device 100, the invention proposes a coupling piece 10 which can be formed, for example, from a dimensionally stable and stable material.

[0056] The coupling piece 10 has a first function, according to which the coupling piece 10 serves for mechanically fastening the module 101 to the drive element 3 of the wiper device A, as described in Fig. 9 to 11. According to this function, the coupling piece 10 is designed as a fastening element. The coupling piece 10 can have a fastening means, for example in the form of an undercut H2, which can be formed, for example, within a sleeve-shaped fastening area 17 on the coupling piece 10 (cf. Fig. 11). The fastening means can serve to fasten the coupling piece 10 to the drive element 3 in a form-fitting and / or force-fitting manner, and in particular in a rotationally fixed manner. During normal operation of the wiper device A, the coupling piece 10 can be rotated along with the drive element 3 about the drive axis D3. However, even during replacement of wiper blades on the wiper device A, the coupling piece 10 remains attached to the drive element 3.

[0057] The coupling piece 10 has a second function, according to which the coupling piece 10 serves for hydraulically connecting the spraying device 100 to the supply line W for a cleaning liquid F, as described in the Fig. 9 to 11. The supply line W can advantageously run through the drive element 3 and in particular along the drive axis D3 or coincide with it. The supply line W supplies the cleaning fluid F, for example from a container not shown in detail. The fastening region 17 of the coupling piece 10 can be placed coaxially to the supply line W in the drive element 3. The coupling piece 10 can also have a protruding connecting piece 11 onto which a pipe 20 can be pushed. The first line region L1 runs through the coupling piece 10 and the connecting piece 11 for forwarding the cleaning fluid F from the supply line W of a spray bar 30 and / or a spray piece 40 of the spray device 100, which can be attached to the wiper arm 200.

[0058] Secondly, the invention proposes a tube 20 which can be formed in particular from an elastic and / or flexible material.

[0059] The pipe 20 has the function of providing a, in particular flexible, second line region L2 for forwarding the cleaning liquid F from the first line region L1 to a spray bar 30 and / or a spray piece 40 of the spray device 100.

[0060] As it is in the Fig. 2 to 4, 6, 8 and 9, the tube 20 can advantageously be designed in such a way, in particular shaped in such a way, preferably have a folding region 23 such that all changes in length and / or changes in position, which can also be referred to as changes in angle, in the spray device 100 and in the wiping device A during the movements of the wiper head 300 and the wiper arm 200 can be compensated.

[0061] During normal operation of the wiper device, the tube 20 can advantageously rotate around the drive axis D3 with the drive element 3 and the coupling piece 10. During replacement of wiper blades 1 on the wiper device, the tube 20 can continue to reliably accommodate all length changes and / or position changes in the spray device 100 and in the wiper device A.

[0062] The supply line W in the drive element 3 can, for example, run along the drive axis D3. However, even if the supply line W through the drive element 3 does not completely coincide with the drive axis D3, the pipe 20 can reliably compensate for all length changes and / or position changes in the spray device 100 and in the wiping device A in accordance with the invention.

[0063] Within the scope of the invention, the coupling piece 10 and the pipe 20 can be combined as desired with a spray bar 30 and / or a spray piece 40, which can be attached to the wiper arm 200. The spray bar 30 and / or the spray piece 40 can each have an inlet connection for the pipe 20, or vice versa. However, simply sliding the pipe 20 onto the spray bar 30 and / or the spray piece 40 is also conceivable.

[0064] A possible injection molding piece 40 is shown only schematically in the Fig. 2 and Fig. 3. The spray piece 40 can be designed with one or more spray nozzles and / or with one or more simple spray openings.

[0065] An exemplary adapter element 2 is shown in the Fig. 1 to 3 and 5. The adapter element 2 can serve to accommodate a fastening device for the wiper blade 1. The adapter element 2 can also be designed to movably support a locking button 2a. The locking button 2a can engage in a corresponding opening on the spring box 202 of the wiper arm 200 during assembly of the wiper device A.

[0066] A possible spray bar 30 is in the Fig. 5, Fig. 6, Fig. 7 and Fig. 8. The spray bar 30 can be designed with one or more spray nozzles 31 and / or with one or more simple spray openings 32.

[0067] At least one fastening element 33 can be provided on the spray bar 30 and / or the spray piece 40 in order to fasten the spray bar 30 and / or the spray piece 40 to the wiper arm 200. For fastening the spray bar 30 and / or the spray piece 40 to the wiper arm 200, various fastening elements, for example in the form of clips, claws, locking elements, etc., are conceivable.

[0068] The Fig. 5 schematically indicates that the splash bar 30 can be glued and / or welded to a lower edge of the wiper arm 200.

[0069] The Fig. 6 and Fig. 7 show, by way of example, several fastening elements 33 on the spray strip 30, which can be fastened in corresponding receptacles on the lower edge of the wiper arm 200.

[0070] Advantageously, the tube 20 can be designed to compensate for length or as protection against stretching and / or compression of the tube 20 and / or to compensate for angles or as protection against bending and / or twisting of the tube 20, in particular in the case of: - Folding and / or pivoting movements of the wiper arm 200 relative to the wiper head 300 about the folding axis D2, and / or - Rotational movements of the wiper arm 200 and the wiper head 300 around the drive axis D3.

[0071] As it is in the Fig. 2 to 4, 6, 8 and 9, the pipe 20 can have a folding region 23 in order to be able to compensate for changes in length and / or position in the spray device 100 during the pivoting movements of a wiper arm 200 relative to a wiper head 300 about the folding axis D2 and / or during the rotational movements of the drive element 3 and a wiper head 300 about the drive axis D3. With the help of the folding region 23, all changes in length and / or position in the spray device 100 and in the wiping device A can advantageously be absorbed and compensated. The folding region 23 can also serve to prevent kinks in the pipe 20, in particular between a transition section 22 and a transfer section 24.

[0072] As it is in the Fig. As shown in Figures 2 to 4, 6, 8, and 9, the folding region 23 can have at least one fold (although several are also conceivable), for example a U-shaped fold. The fold can also have an Ω shape (although other shapes are also conceivable). The fold can fold up or unfold and thus serve for length compensation and / or angle compensation or position compensation. Relative movements between a transition section 22 running parallel to the rotation axis D1 and a transfer section 24 oriented perpendicular thereto can be enabled via the fold.

[0073] In this way, local stresses and any deformations on the pipe 20 can be reliably avoided. Thus, the folded area 23 can provide reliable protection against stretching and / or compression, as well as bending and / or twisting, on the pipe 20.

[0074] As the Fig. 3 and Fig. 4, the folding region 23 can be arranged in a lower region of the wiper head 300, which can face the vehicle window. The folding region 23 can unfold into an area that can extend substantially parallel to the surface of the vehicle window.

[0075] As the Fig. 3 and Fig. 4 also shows, the folding region 23 can be arranged below a clamping piece 301 of the wiper head 300. The folding region 23 can also preferably be arranged outside a clamping piece 301 of the wiper head 300, in particular exposed with respect to the clamping piece 301. This eliminates the need to redesign the wiper head 300 and in particular the clamping piece 301 and / or to provide it with holes for hoses, which are intended to ensure a sufficient bending radius for the hoses.

[0076] Based on the Fig. 6, the individual sections of the tube 20 can be seen. The tube 20 can have a particularly straight transition section 22, which was already mentioned above. The transition section 22 connects the coupling piece 10, which can be arranged in an upper region of a wiper head 300 facing away from the vehicle window, with the folding section 23, which can be arranged in a lower region of the wiper head 300 facing the vehicle window.

[0077] The transition section 22 can run substantially parallel to the drive axis D3. The transition section 22 can advantageously be arranged laterally, in particular outside and preferably exposed relative to a clamping piece 301 of the wiper head 300 and / or below a cap 302 of the wiper head 300. Using the transition section 22, the tube 20 can be routed from above the clamping piece 301 to below the clamping piece 301.

[0078] Furthermore, the Fig. 6 and 9 to 11, the pipe 20 may have a connecting section 21 for hydraulic connection to the coupling piece 10. The connecting section 21 can simply be pushed over a connecting piece 11 of the coupling piece 10.

[0079] As the Fig. 9 to 11 indicate, the connecting piece 11 can be formed on the coupling piece 10.

[0080] As the Fig. 11 also shows by way of example, the connecting piece 11 of the coupling piece 10 can have at least one locking element 12, for example in the form of a barb, which can prevent the pipe 20 from slipping off the connecting piece 11. In this way, the pipe 20 can be reliably fastened to the connecting piece 11.

[0081] Furthermore, it is also conceivable that the coupling piece 10 and the pipe 20 could be designed as a two-component injection-molded component. This eliminates an assembly step for attaching the pipe to the connecting piece 11.

[0082] Advantageously, it is conceivable that the coupling piece 10 may comprise a dimensionally stable and / or stable material, in particular plastic, preferably thermoplastic. The tube 20 may comprise an elastic and / or flexible material, in particular plastic, preferably elastomer.

[0083] In the Fig. 11 further shows that the coupling piece 10 can have a head region 14 for covering the supply line W. The head region 14 can, for example, have a ball closure 15 for an end of the first line region L1, which is remote from the connection piece 11 on the coupling piece 10. The ball closure 15 can serve for pressure equalization and / or volume equalization.

[0084] In the Fig. 11 further shows that the coupling piece 10 can have a collar region 16, in particular a sleeve-shaped one. The collar region 16 can be formed coaxially with a fastening region 17 and, if necessary, provide a gripping area for easy mounting of the coupling piece 10 on the drive element 3.

[0085] In the Fig.11 also shows that the coupling piece 10 can have a fastening area 17, in particular a sleeve-shaped one, for fastening to the drive element 3. The fastening area 17 can be fastened coaxially to the supply line W on the drive element 3. The fastening area 17 can have an undercut H2, which can be designed to correspond to an undercut H1 on the drive element 3 in order to fasten the coupling piece 10 to the drive element 3 in a form-fitting and / or force-fitting manner. A thread and a counter-thread can also be used to fasten the coupling piece 10 to the drive element 3. In principle, different locking and / or clip elements are conceivable for fastening the coupling piece 10 to the drive element 3.

[0086] Furthermore, a circumferential groove 18 can be formed between the collar region 16 and the fastening region 17, which can ensure a certain freedom of movement between the collar region 16 and the fastening region 17 when fastening the coupling piece 10 to the drive element 3.

[0087] A corresponding modular spray device 100, comprising a module 101 according to the invention, a spray bar 30 and / or a spray piece 40, also represents an aspect of the invention.

[0088] A wiping device A with such a modular spray device 100 also represents an aspect of the invention.

[0089] The above description of the figures describes the present invention solely by way of example. Of course, individual features of the embodiments can be freely combined with one another, provided this is technically feasible, without departing from the scope of the invention. List of reference symbols 100 spraying device 101 Module 10 coupling piece 11 connecting pieces 12 locking element 14 Head area 15 ball closure 16 Collar area 17 Mounting area 18 grooves 20 pipe 21 Connection section 22 Transition section 23 Folding area 24 Transfer section 30 spray bar 31 Spray nozzle 32 spray openings 33 Fastening element 40 injection pieces 200 wiper arm 202 spring box 203 Spring arrangement 300 wiper head 301 clamping piece 302 Cap 1 wiper blade 2 adapter element 2a locking button 3 Drive element A wiper device D1 rotation axis D2 folding axis D3 drive axle F Cleaning fluid H1 undercut H2 undercut L1 first line area L2 second line area W supply line

Claims

[1] Module (101) for a spray device (100) for use in a wiper device (A) of a vehicle window, comprising: - a coupling piece (10) for mechanically fastening the module (101) of the spray device (100) to a drive element (3) of the wiping device (A) and for hydraulically connecting the spray device (100) to a supply line (W) for a cleaning fluid (F), - wherein the coupling piece (10) has a first line region (L1) for forwarding the cleaning liquid (F) from the supply line (W), - and a pipe (20) for hydraulically connecting a spray bar (30) and / or a spray piece (40) of the spray device (100) to the coupling piece (10), - wherein the pipe (20) has a second line section (L2) for forwarding the cleaning liquid (F) from the first line section (L1), characterized bythat the pipe (20) is designed for length compensation and / or angle compensation in the spray device (100), in the case of: - folding and / or pivoting movements of a wiper arm (200) relative to a wiper head (300) about a folding axis (D2), and / or - Rotational movements of a wiper arm (200) and a wiper head (300) about a drive axis (D3). [2] Module (101) according to claim 1, characterized by in that the tube (20) has a folding region (23) in order to compensate for changes in length and / or position in the spray device (100) during the pivoting movements of a wiper arm (200) relative to a wiper head (300) about a folding axis (D2) and / or during the rotational movements of the drive element (3) and a wiper head (300) about a drive axis (D3). [3] Module (101) according to the preceding claim, characterized by , that the folding area (23) has at least one or more, preferably U-shaped or Ω-shaped, folds, and / or that the folding area (23) can be arranged in a lower area of ​​the wiper head (300) which faces the vehicle window, and / or that the folding area (23) unfolds, in particular initially, in a surface which extends parallel to the surface of the vehicle window, and preferably allows it to be pulled apart, preferably in a rotated position, during a further movement, and / or that the folding area (23) can be arranged below a clamping piece (301) of the wiper head (300), and / or that the folding region (23) can be arranged outside a clamping piece (301) of the wiper head (300), in particular exposed with respect to the clamping piece (301). [4] Module (101) according to one of the preceding claims, characterized by , that the tube (20) has a transition section (22) which connects the coupling piece (10), which can be arranged in an upper region of a wiper head (300) facing away from the vehicle window, to a folding region (23) which can be arranged in a lower region of the wiper head (300) facing the vehicle window, wherein in particular the transition section (22) runs substantially parallel to a drive axis (D3) about which the drive element (3) can be driven in rotation, wherein preferably the transition section (22) can be arranged laterally of a clamping piece (301) of the wiper head (300) and / or below a cap (302) of the wiper head (300). [5] Module (101) according to one of the preceding claims, characterized by , that the pipe (20) has a connecting section (21) for hydraulic connection to the coupling piece (10), wherein in particular the connecting section (21) is pushed over a connecting piece (11) of the coupling piece (10), and / or that the coupling piece (10) has a connecting piece (11) for hydraulic connection to the pipe (20). [6] Module (101) according to the preceding claim, characterized by , that the connecting piece (11) of the coupling piece (10) has at least one locking element (12), in particular in the form of a barb, which digs into the material of the pipe (20), or that the coupling piece (10) and the pipe (20) are designed in the form of a 2-component injection-molded component. [7] Module (101) according to one of the preceding claims, characterized by , that the coupling piece (10) comprises a dimensionally stable and / or stable material, in particular plastic, preferably thermoplastic, and / or that the tube (20) comprises an elastic and / or flexible material, in particular plastic, preferably elastomer. [8] Module (101) according to one of the preceding claims, characterized by , that the coupling piece (10) has a head region (14) for covering the supply line (W), which runs in particular through the drive element (3) and preferably along a drive axis (D3), wherein in particular the head region (14) has a ball closure (15) for an end of the first line region (L1) which faces away from the pipe (20), and / or that the coupling piece (10) has a, in particular sleeve-shaped, collar region (16), wherein in particular the collar region (16) extends circumferentially around a fastening region (17) of the coupling piece (10), and / or that the coupling piece (10) has a, in particular sleeve-shaped, fastening area (17) for fastening to the drive element (3), wherein in particular the fastening area (17) can be fastened coaxially to the supply line (W) on the drive element (3), wherein the fastening area (17) preferably has an undercut (H2) which is designed to correspond to an undercut (H1) on the drive element (3) in order to fasten the coupling piece (10) to the drive element (3) in a form-fitting and / or force-fitting manner, wherein a groove (18) is preferably formed between the collar region (16) and the fastening region (17). [9] Spray device (100) for a wiping device (A) of a vehicle window, comprising: a module (101) according to one of the preceding claims, a spray bar (30) and / or a spray piece (40), which is / are hydraulically connected to the pipe (20). [10] Spraying device (100) according to the preceding claim, characterized by , that the spray bar (30) and / or the spray piece (40) have / has an inlet nozzle for the pipe (20), and / or that the spray strip (30) and / or the spray piece (40) have / has at least one spray nozzle (31) and / or at least one spray opening (32), and / or that the spray strip (30) and / or the spray piece (40) are / is designed to be attached to a wiper arm (200), and / or that the spray strip (30) and / or the spray piece (40) have / have at least one fastening element (33) which is designed, for example, to correspond to a counter-fastening element on a wiper arm (200) in order to fasten the spray strip (30) and / or the spray piece (40) to the wiper arm (200) in a form-fitting and / or force-fitting manner, and / or that the spray strip (30) and / or the spray piece (40) can be fastened to a wiper arm (200) in a materially bonded manner, for example by means of an adhesive or by means of a welding process. [11] Wiper device (A) comprising a spray device (100) according to one of the preceding claims.

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