Wiper device for a glass wiper with a spray function

Abstract

The present invention relates to a wiper device for a windshield wiper of a vehicle, comprising a wiper arm and a wiper blade device, wherein the wiper blade device comprises a wiper strip, a spoiler that can be fastened to the wiper strip, and a wiper blade that can be fastened to the wiper strip or the spoiler, and wherein the wiper blade device further comprises an adapter, wherein the adapter has a liquid inlet and two liquid outlets, wherein the wiper device further comprises a first connector, a second connector, and a coupling element for fluidically coupling a liquid delivery device to the liquid inlet of the adapter, wherein the first connector has a first wiper arm receiving portion for receiving and fixing the wiper arm and a coupling element receiving portion for receiving and fixing the coupling element, and wherein the second connector can be fixed to the wiper blade device and has at least a part of a second wiper arm receiving portion for receiving and fixing the wiper arm.

Description

Technical Field

[0001] The present invention relates to a wiper device for a windshield wiper with a spray function, and in particular to a wiper device having a particularly advantageous connection and fixation of a wiper blade device to a wiper arm and a liquid supply device. Background Art

[0002] Window scrapers for vehicles are known in various embodiments. It is also known that window scrapers are equipped with a spraying function so that cleaning liquid can be sprayed directly through the window scraper onto the window to be cleaned of the vehicle.

[0003] For this purpose, a wiper blade device has been proposed for a wiper blade, comprising a wiper blade adapter, at least one spoiler unit and at least one spray unit having at least one washing fluid channel unit which at least partially forms a main longitudinal channel. Summary of the Invention

[0004] The present invention relates to a wiper device for a windshield wiper of a vehicle, comprising a wiper arm and a wiper blade device, wherein the wiper blade device comprises a wiper strip, a spoiler that can be fastened to the wiper strip, and a wiper blade that can be fastened to the wiper strip or the spoiler, and wherein the wiper blade device further comprises an adapter, wherein the adapter has a liquid inlet and two liquid outlets so as to guide cleaning liquid introduced into the liquid inlet into a liquid channel of the spoiler through the liquid outlets, wherein the wiper device further comprises a first connector, a second connector, and a coupling element for fluidically coupling a liquid delivery device to the liquid inlet, wherein the first connector has a first wiper arm receptacle for accommodating the wiper arm and a coupling element receptacle for accommodating and fixing the coupling element, and wherein the second connector can be fixed to the wiper blade device and has at least a part of a second wiper arm receptacle for accommodating and fixing the wiper arm.

[0005] Such a wiper arrangement furthermore allows particularly simple and reliable assembly and disassembly of the wiper blade arrangement.

[0006] The wiper device is particularly suitable for use as a windshield wiper for a vehicle, such as a motor vehicle. The wiper device comprises a wiper arm and a wiper blade device. The wiper arm can be used, in particular, to mechanically connect the wiper blade device to the motor vehicle and, for this purpose, is particularly configured to be pivotally fastened adjacent to the vehicle's windshield. Furthermore, the wiper arm can be driven by a windshield wiper motor in a manner known per se. The wiper blade device is particularly a portion of the wiper device or windshield wiper that slides along the vehicle's windshield, guided by the wiper arm.

[0007] To this end, the wiper blade arrangement comprises a scraper strip, a spoiler that can be fastened to the scraper strip, and a scraper blade that can be fastened to the scraper strip or spoiler. The scraper strip can, for example, be made of metal and impart mechanical stability to the scraper blade arrangement. Furthermore, the scraper strip can serve to hold the spoiler and, if necessary, the scraper blade. The spoiler is used for this purpose in a manner known per se. The glass scraper is pressed against the glass at high speed to achieve a good scraping effect. Furthermore, as described in more detail below, the spoiler can include a channel for guiding the cleaning liquid. The scraper blade particularly comprises a rubber lip that slides directly along the glass and thereby removes the liquid from the glass. This rubber lip can be fastened to the spoiler or alternatively to the scraper arm.

[0008] In terms of the operation of the windshield wiper or wiper device, it can be advantageous to design the wiper device so as to spray a cleaning liquid, for example, water mixed with a detergent, onto the windshield. This ensures that the windshield is cleaned of dirt particularly effectively and quickly. Because the wiper device sprays the cleaning liquid onto the windshield, the cleaning liquid can be sprayed precisely and comprehensively at the desired location where the windshield wiper is cleaning the windshield. Therefore, applying the cleaning liquid to the windshield via the wiper device allows for improved safety.

[0009] To achieve this, the wiper blade device further comprises an adapter having a liquid inlet and two liquid outlets, so that liquid introduced into the liquid inlet is guided via the liquid outlets into the liquid channels of the spoiler. Therefore, a channel geometry is provided within the adapter, by means of which the cleaning liquid can be guided from the liquid inlet to the liquid outlets. The channel geometry can be configured, for example by adapting the dimensional ratios of the respective channels, such that the cleaning liquid is uniformly distributed over the length of the spoiler or at least a portion of the wiper blade, thereby ensuring uniform drainage and, therefore, a uniform cleaning effect, over the length of the wiper blade.

[0010] Furthermore, the liquid inlet and the liquid outlet can have corresponding connections for coupling to adjacent components.

[0011] Furthermore, it is provided that the wiper device comprises a first connector, a second connector, and a coupling element for fluidically coupling the liquid delivery device to the liquid inlet of the adapter. The first connector comprises a first wiper arm receptacle for accommodating and fixing a wiper arm and a coupling element receptacle for accommodating and fixing the coupling element, wherein the second connector can be fixed to the wiper blade device and comprises a second wiper arm receptacle for accommodating and fixing the wiper arm.

[0012] In particular, this embodiment allows an advantageous connection of the wiper blade device, in particular to the wiper arm, and to the liquid supply device.

[0013] Therefore, the wiper device first comprises a first connector. This first connector is used in particular to accommodate and fix the wiper arm and the coupling element via the wiper arm receptacle and the coupling element receptacle. As a result, the wiper arm and the coupling element are fixed to the first connector, so that the coupling element is also fixed to the wiper arm.

[0014] It may be provided that the coupling element is fixed to the first connector via a releasable or non-releasable mechanical connection. For example, the coupling element may be fixed to the first connector via a clamping connection. However, preferably, the coupling element is fixed to the first connector in a pivotable manner, as will be described in more detail below.

[0015] In the case of the wiper arm, it is preferably fastened releasably to the first connector. This can be achieved in particular by a releasable clamping connection. This can in particular achieve advantages in terms of assembling and / or disassembling the wiper blade arrangement.

[0016] Furthermore, the second connector can be fastened to the wiper blade arrangement and comprises at least a portion of a second wiper arm receptacle for accommodating and fastening a wiper arm, whereby the wiper arm can be fastened in a simple manner in the wiper arm receptacle, for example, to the second connector or to an adapter, and thus to the wiper blade arrangement. For example, the second wiper arm receptacle can be formed by the wiper arm and the adapter. The fastening of the coupling element to the first connector provides that, when the wiper arm is fastened to the second connector, the coupling element is also at least indirectly fastened to the second connector and thus to the wiper blade arrangement.

[0017] Thus, when the wiper blade device is fastened to the wiper arm, the mechanical connection of the wiper blade device to the wiper arm and thus the mechanical fastening of the wiper blade device and the connection of the liquid delivery device to the liquid discharge system of the wiper blade device, i.e., in particular the liquid nozzle, can also be achieved. Therefore, the mechanical fastening does not have to be performed separately from the functional connection, i.e., the connection to the liquid delivery device, but rather both processes are achieved via a common working step.

[0018] This allows the particularly simple assembly and disassembly of the scraper blade arrangement, which can significantly reduce the risk of incorrect assembly. In addition, maintenance work can be carried out more effectively in time.

[0019] It is possible here that the coupling element has two connections, wherein one of these connections can be attached to a liquid supply device, such as, for example, a hose connected to a liquid reservoir or a liquid tank for cleaning liquid, and the second connection can be attached to a component of the wiper blade device, in particular an adapter.

[0020] It is also preferred that the wiper device is constructed in such a way that the coupling element is coupled to the liquid inlet of the adapter when the wiper arm is fixed in the second wiper arm receptacle. In particular, in this design, it is possible to simultaneously connect the liquid delivery device to the adapter when the wiper blade device is mechanically fixed to the wiper arm. This makes it possible to dispense with additional steps, or to significantly simplify the assembly and / or disassembly of the wiper blade device compared to solutions in the prior art. This can be achieved in particular by spatially arranging the components of the wiper device in such a way that when the wiper strip is guided into the second connector, the coupling element or its corresponding connector is thereby coupled to the adapter or its liquid inlet. This also makes it possible to mechanically couple or fix the wiper blade device to the wiper arm and to connect the adapter to the liquid delivery device.

[0021] Furthermore, it can be advantageous if the wiper arm and the second wiper arm receptacle are designed to secure the wiper arm when the wiper arm is pivoted relative to the adapter by less than a predefined pivot angle, and to release the wiper arm when the wiper arm is pivoted relative to the adapter by an angle equal to or greater than the predefined pivot angle. Thus, the wiper arm can, for example, pivot relative to the adapter in the second wiper arm receptacle. This design allows for simple, tool-free assembly and disassembly of the wiper blade assembly, making assembly and disassembly particularly simple. Furthermore, with this design, the corresponding solution allows the wiper blade assembly to be very securely fastened to the wiper arm despite tool-free fastening, virtually eliminating the risk of accidental release.

[0022] In particular, the predefined pivot angle can be provided to be within a range of greater than or equal to 10°, preferably greater than or equal to 18°, for example, within a range of greater than or equal to 10° to less than or equal to 45°. Thus, the wiper arm is pivoted relative to the adapter at a predefined pivot angle of 10° or greater, for example, 18° or greater, in order to release the wiper arm from the second connector. This angle relates to the rest position of the windshield wiper when the windshield wiper is cut off. This design ensures that, for example, during normal operation of the windshield wiper, the wiper arm is reliably prevented from releasing when the wiper arm is pivoted. This is because even during operation of the windshield wiper, the wiper arm pivots within a limited range, but this must not lead to the wiper arm becoming loose. Accordingly, in particular, this design allows for simple assembly and disassembly to be combined with reliable fastening of the wiper blade device.

[0023] Particularly preferably, the above-mentioned fixation can be achieved when the wiper arm has a fixing side with an undercut and the second wiper arm receptacle, in particular the adapter, has a fixing protrusion, or when the wiper arm has a fixing side with a fixing protrusion and the second wiper arm receptacle, in particular the adapter, has an undercut, wherein, when the wiper arm is inserted into the second wiper arm receptacle, if the wiper arm is pivoted relative to the adapter by at least a predefined pivot angle, the first fixing side can be guided along the fixing protrusion or the undercut, and when the fixed position of the wiper arm is reached, if the wiper arm is pivoted relative to the adapter such that it is pivoted relative to the adapter by less than a predefined pivot angle, the fixing protrusion interacts with the undercut to fix the wiper arm (in the second wiper arm receptacle).

[0024] Furthermore, it can be advantageous if the wiper arm is also secured to the second connector by a releasable securing portion that can be released independently of the pivoting of the wiper arm relative to the adapter. This design solution can provide additional securing, which can further reduce the risk of unintentional release of the wiper blade device. For example, a securing mechanism preloaded by spring force can be provided in the second connector. Thus, by pressing a button against the spring force, for example, a securing pin can be pressed out of the securing geometry of the wiper arm, thereby releasing the securing.

[0025] Furthermore, it may be advantageous if the coupling element and the second connector are configured to secure the coupling element when the coupling element pivots relative to the second connector by less than a predefined pivot angle, and to release the coupling element when the coupling element pivots relative to the second connector by an angle equal to or greater than the predefined pivot angle. This allows for reliable securing of the coupling element, which can impart greater mechanical stability to the overall design. Furthermore, this securing can be achieved through a simple pivoting motion, which simplifies operation.

[0026] For example, for this purpose, the coupling element can include a first fixing surface, and the second connector can include a second fixing surface, which are designed such that, in a position in which the coupling element is pivoted relative to the second connector by less than a predefined pivot angle, they interact with each other to fix the coupling element in a position coupled to the liquid inlet of the adapter, and in a position in which the coupling element is pivoted relative to the second connector by at least the predefined pivot angle, the coupling element can be released from the second connector. Thus, in this embodiment, it is also possible to achieve a fixation of the coupling element to the second connector, but in a releasable manner, even if the wiper arm can be released by pivoting. Accordingly, it can be provided that the pivot angle for releasing the coupling element corresponds to the pivot angle for releasing the wiper arm.

[0027] For example, the fastening surfaces can be designed with corresponding curvatures so that they can rest against one another in the fastened position of the coupling element and can slide along one another when the coupling element is pivoted relative to the second adapter.

[0028] Furthermore, if the coupling element is pivotably fastened to the first connector, it is also possible, for example, to pivot the coupling element relative to the first connector during normal and desired operation of the windshield wiper. This can be advantageous because, as has been shown, even small pivoting movements can occur during operation of the windshield wiper. However, since the liquid conveying device is optionally fixed rigidly or at least with limited mobility, the risk of damage due to pivoting movements during operation of the windshield wiper can be counteracted in this manner.

[0029] Furthermore, it may be preferred that the coupling element has a liquid inlet configured as a male connector. With this design, the liquid inlet can be constructed simply and is also compatible with commonly used liquid conveying devices. For example, the liquid conveying device can have a hose connected to a liquid reservoir. The hose can then be easily pushed onto the liquid inlet or the male connector to establish the connection and thus connect the adapter or wiper blade device to the liquid conveying device, such as the liquid reservoir.

[0030] Furthermore, it may be preferred that the spoiler has a plurality of liquid nozzles for spraying the liquid. This allows for a uniform application of the cleaning liquid to the vehicle's windshield, as the nozzles can be easily distributed on the spoiler. Furthermore, this allows for a simple construction or design of the wiper blade device. This is because, as mentioned above, it is particularly preferred that the spoiler has a channel for distributing the cleaning liquid, which is connected to the adapter or its liquid outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Further advantages and advantageous embodiments of the subject matter of the invention are illustrated by the drawings and explained in the following description, wherein the described features may form the subject matter of the invention individually or in any combination, unless the context clearly indicates otherwise. It should be noted that the drawings have a merely descriptive character and are not to be construed as limiting the invention in any way. They show:

[0032] Figure 1 A schematic diagram showing a scraper device according to a design solution of the present invention;

[0033] Figure 2 Show Figure 1 An exploded view of the design scheme;

[0034] Figure 3 Shown during the spraying process Figure 1 A schematic diagram of the design scheme;

[0035] Figure 4 Show Figure 1 A detailed drawing of each part of the design;

[0036] Figure 5 Show Figure 1 Another detailed drawing of each part of the design;

[0037] Figure 6 Show Figure 1 Another detailed drawing of each part of the design;

[0038] Figure 7 Show Figure 1 Another detailed drawing of each part of the design;

[0039] Figure 8 Show Figure 1 Another detailed drawing of each part of the design;

[0040] Figure 9 Show Figure 1 Another detailed drawing of each part of the design;

[0041] Figure 10 Show Figure 1 Another detailed drawing of each part of the design;

[0042] Figure 11 Show Figure 1 Another detailed drawing of each part of the design;

[0043] Figure 12 Show Figure 1 Another detailed drawing of each part of the design;

[0044] Figure 13 Show Figure 1 Another detailed drawing of each part of the design;

[0045] Figure 14 Show Figure 1 Another detailed drawing of each part of the design;

[0046] Figure 15 Show Figure 1 Another detailed view of the various parts of the design. DETAILED DESCRIPTION

[0047] exist Figure 1 and 2 A design of a wiper device 10 according to the present invention is shown in FIG. The wiper device 10 is particularly used as a windshield wiper for a vehicle. Figure 1 The wiper device 10 is shown in an operating state or in an assembled state, and Figure 2 Individual parts or an exploded view of the wiper device 10 are shown.

[0048] exist Figure 1 and 2 , the wiper device 10 comprises a wiper arm 12 and a wiper blade device 14. The wiper blade device 14 also includes a wiper strip 16, a spoiler 18 that can be fastened thereto, and a wiper blade 20 that can be fastened to the wiper strip 16 or the spoiler 18. Furthermore, the wiper blade device 14 includes an adapter 22 having a liquid inlet 24 and two liquid outlets 26, 28, so that cleaning liquid 34 introduced into the liquid inlet 24 can be directed via the liquid outlets 26, 28 to the liquid channel 30 of the spoiler 18. To this end, the adapter 22 also includes a body 36, in which a distribution geometry is provided that connects the liquid inlet 24 to the liquid outlets 26, 28. This allows the cleaning liquid 34 provided by the liquid supply device 32 to be distributed via the spoiler 18 and thus sprayed onto the windshield.

[0049] This is Figure 3 In detail, Figure 3 The wiper blade arrangement 14 is shown when spraying cleaning liquid 34 with the wiper blade arrangement 14 . For this purpose, the spoiler 18 has a plurality of liquid nozzles 38 for spraying the cleaning liquid 34 .

[0050] also, Figure 4The basic structure of the wiper device 10 is shown. In detail, it is shown that the adapter 22 can be pushed onto the wiper strip 16. Furthermore, the adapter 22 can be clamped or welded to the wiper strip 16. The two-part spoiler 18 can also be pushed or clamped onto the wiper strip on both sides of the adapter 22 and come into contact with the adapter 22, as indicated by the arrows.

[0051] This is Figure 5 As shown in detail in Figure 5 , a side view of a spoiler 18 is shown, which has a fluid channel 30 arranged therein, which can be connected to a fluid nozzle 38 of the spoiler 18 and to the liquid outlet 26 of the adapter. Furthermore, a fastening geometry 19 is shown, in which the wiper blade 20 can be fastened.

[0052] exist Figures 6 to 9 It is shown in particular that the wiper device 10 also has a first connector 40. In detail, the first connector 40 has a first wiper arm receptacle 42 for accommodating and fixing the wiper arm 12 and a coupling element receptacle 44 for accommodating and fixing the coupling element 46. In detail, the coupling element receptacle 44 is constructed as a long hole in a curved shape. The coupling element 46 has a fixing pin 48, which can be inserted into the long hole in an irreleasable manner in particular so that the fixing pin 48 can be rotated in the long hole, so that the coupling element 46 can be pivotally fixed to the first connector 40. This is indicated by an arrow. It is further shown that the coupling element 46 has a liquid inlet 50, which can be connected to the liquid conveying device 32, such as a hose connected to a fluid tank, and furthermore, the coupling element 46 has a liquid outlet 52, which can be connected to the liquid inlet 24 of the adapter 22. This is shown in FIG. Figure 6 Shown in.

[0053] The first wiper arm receptacle 42 can have an opening 43 into which the wiper arm 12 can be introduced in the direction of the arrow. Figure 7 Shown in.

[0054] Figure 8 It is also shown that the wiper arm 12 can be fixed, in particular releasably, in the first connector 40, for example by a clamping connection. For this purpose, the wiper arm can have a fixing geometry that interacts with an undercut of the first connector.

[0055] For example, but not limited to this, in the state where the coupling element 46 and the wiper arm 12 are fixed to the first connector 40 as described above, the liquid delivery device 32 can be connected to the coupling element 46. To this end, as described above, the hose connected to the liquid reservoir can be connected to the liquid inlet 50 of the coupling element 46. Figure 9 Shown in.

[0056] exist Figure 10 It is also shown that the wiper device 10 has a second connector 54, wherein the second connector 54 can be fixed to the wiper blade device 14 and has a second wiper arm receiving portion 56 for receiving the wiper arm 12, wherein the second wiper arm receiving portion 56 can be in particular Figure 12 The wiper arm 12 can then be introduced into the wiper arm receptacle 56 and fixed, for example, to the second connector 54 and / or the adapter 22 , as will be described in more detail below.

[0057] Especially in Figure 10 , the wiper device 10 is designed such that when the wiper arm 12 is fixedly positioned in the second wiper arm receptacle 56, the coupling element 46 is coupled to the liquid inlet 24 of the adapter 22. This is achieved by sliding the wiper arm 12 into the second wiper arm receptacle 56 and simultaneously sliding the liquid outlet 52 of the coupling element 46, which is designed, for example, as a female connector, onto the liquid inlet 24, which is designed, for example, as a male connector, of the adapter 22. The adapter 22 can be sealed relative to the coupling element 46, for example, by an O-ring 58 arranged at the liquid inlet 24.

[0058] Figure 11 The arrangement is shown in the fixed state of the wiper arm 12 and the coupling element 46 .

[0059] exist Figures 12 to 14 , the coupling element 46 is also shown fixed to the second connector 54. In particular, it will be understood from these figures that the coupling element 46 and the second connector 54 are configured to fix the coupling element 46 when the coupling element 46 pivots less than a predefined pivot angle relative to the second connector 54, and to release the coupling element 46 when the coupling element 46 pivots equal to or greater than the predefined pivot angle relative to the second connector 54. For example, the predefined pivot angle may be within a range of greater than or equal to 10°, such as within a range of greater than or equal to 18° to approximately 45°.

[0060] To this end, it is provided that the coupling element 46 has a first fixing surface 60 and the second connector 54 has a second fixing surface 62, which are constructed in such a way that they interact with each other in a position in which the coupling element 46 is pivoted relative to the second connector 54 by less than a predefined pivot angle to fix the coupling element 46 in a position coupled to the liquid inlet 24 of the adapter 22, i.e. they are arranged adjacent to each other, in particular touching each other, and in a position in which the coupling element 46 is pivoted relative to the second connector 54 by at least and therefore equal to or greater than a predefined pivot angle, the coupling element 46 can therefore be released from the second connector 54, i.e. the fixing surfaces 60, 62 are unobstructed in the withdrawal direction of the coupling element 46.

[0061] Here, Figure 13 The coupling element 46 is shown in a position where it is pivoted relative to the second connector 54 by less than a predetermined pivot angle, so that the coupling element 46 is fixed, and Figure 12 and Figure 14 A position is shown in which the coupling element 46 is pivoted relative to the second connector by more than a predetermined pivot angle, so that the coupling element 46 can be released.

[0062] In addition, Figure 15 , the fastening of the wiper arm 12 in the adapter 22 is shown in a state in which the wiper arm 12 is positioned in the second wiper arm receptacle 56 .

[0063] The wiper arm 12 and the second wiper arm receptacle 56, i.e., in particular the adapter 22, are shown to be configured such that the wiper arm 12 is secured when the wiper arm 12 is pivoted relative to the adapter 22 by less than a predefined pivot angle, and the wiper arm 12 is released when the wiper arm 12 is pivoted relative to the adapter 22 by an angle equal to or greater than the predefined pivot angle. For example, the predefined pivot angle can be within a range of greater than or equal to 10°, for example, within a range of greater than or equal to 18° to approximately 45°, and is indicated by an arrow. For example, when the wiper arm 12 is positioned against the release direction, for example, against the adapter 22, the wiper arm 12 can be at an angle of −2°.

[0064] To this end, it is provided that the wiper arm 12 has a fixing side 64 with an undercut 66, for example comprising a fixing geometry 13, and the second wiper arm receptacle 56, in particular the adapter 22, has a fixing projection 68, or that the wiper arm 12 has a fixing side 64 with a fixing projection 68 and the second wiper arm receptacle 56 has an undercut 66, wherein, when the wiper arm 12 is inserted into the second wiper arm receptacle 56, if the wiper arm 12 is pivoted relative to the adapter 22 by at least a predefined pivot angle, the first fixing side 64 can be guided along the fixing projection 68 or the undercut 66, and when the fixed position of the wiper arm 12 is reached, if the wiper arm is pivoted relative to the adapter 22 such that it is pivoted relative to the adapter 22 by less than a predefined pivot angle, the fixing projection 68 interacts with the undercut 66 to fix the wiper arm 12 in the second wiper arm receptacle 56.

[0065] The pivot angle for fixing or releasing the coupling element 46 can in principle be arranged in a plane that deviates (for example by 90°) from the plane in which the pivot angle for fixing or releasing the wiper arm 12 exists.

[0066] Furthermore, it is shown that, in principle, the second connector 54 is pivotably arranged on the adapter 22 , while the coupling element 46 is rigidly connected to the adapter 22 .

[0067] Furthermore, it can be provided that the wiper arm 12 can be fixed to the second connector 54 by means of a releasable fixing which can be released independently of the pivoting of the wiper arm 12 relative to the adapter 22. For this purpose, a spring-loaded button 70 can be pressed on the second connector 54, which button is arranged or guided, for example, in the cover 51, in order to thereby release the fixing, as shown in FIG. Figure 1 For example, the locking element can be pressed out of the locking position.

Claims

1. A wiper device (10) for a windshield wiper of a vehicle, comprising a wiper arm (12) and a wiper blade device (14), wherein the wiper blade device (14) comprises a wiper strip (16), a spoiler (18) which can be fastened thereto, and a wiper blade (20) which can be fastened to the wiper strip (16) or the spoiler (18), and wherein the wiper blade device (14) further comprises an adapter (22), wherein the adapter comprises a liquid inlet (24) and two liquid outlets (26, 28) so as to guide a cleaning liquid (34) introduced into the liquid inlet (24) through the liquid outlets (26, 28) into a liquid channel (30) of the spoiler (18), characterized in that The scraper device (10) further comprises a first connector (40), a second connector (54) and a coupling element (46) for fluidically coupling a liquid delivery device (32) to a liquid inlet (24) of the adapter (22), wherein the first connector (40) comprises a first scraper arm accommodating portion (42) for accommodating the scraper arm (12) and a coupling element accommodating portion (44) for accommodating and fixing the coupling element (46), and wherein the second connector (54) is capable of being fixed to the scraper blade device (14) and comprises at least a portion of a second scraper arm accommodating portion (56) for accommodating and fixing the scraper arm (12).

2. The scraper device (10) according to claim 1, characterized in that The wiper device (10) is designed such that when the wiper arm (12) is fixed in the second wiper arm receptacle (56), the coupling element (46) is coupled to the liquid inlet (24) of the adapter (22).

3. The scraper device (10) according to claim 1 or 2, characterized in that The scraper arm (12) and the second scraper arm accommodating portion (56) are configured to fix the scraper arm (12) when the scraper arm (12) pivots relative to the adapter (22) by less than a predefined pivot angle, and are configured to release the scraper arm (12) when the scraper arm (12) pivots relative to the adapter (22) by an angle equal to or greater than a predefined pivot angle.

4. The scraper device (10) according to claim 3, characterized in that The predefined pivot angle is within a range greater than or equal to 10°.

5. The scraper device (10) according to any one of claims 1 to 4, characterized in that The wiper arm (12) has a fixing side (64) with an undercut (66), and the second wiper arm receptacle (56), in particular the adapter (22), has a fixing projection (68), or the wiper arm (12) has a fixing side (64) with a fixing projection (68), and the second wiper arm receptacle (56), in particular the adapter (22), has an undercut (66), wherein, when the wiper arm (12) is inserted into the second wiper arm receptacle (56), if the wiper arm (12) is positioned relative to the adapter ( 22) is pivoted by at least the predefined pivot angle, the first fixing side (64) can be guided along the fixing projection (68) or the undercut (66), and when the fixed position of the scraper arm (12) is reached, if the scraper arm is pivoted relative to the adapter (22) so that the scraper arm is pivoted by less than the predefined angle relative to the adapter (22), the fixing projection (68) interacts with the undercut (66) to fix the scraper arm (12) in the second scraper arm receptacle (56).

6. The scraper device (10) according to any one of claims 1 to 5, characterized in that The wiper arm (12) is also fixed to the second connector (54) by means of a releasable fixing portion, which can be released independently of a pivoting of the wiper arm (12) relative to the adapter (22).

7. The scraper device (10) according to any one of claims 1 to 6, characterized in that The coupling element (46) and the second connector (54) are configured to fix the coupling element (46) when the coupling element (46) pivots relative to the second connector (54) by less than a predefined pivot angle and to release the coupling element (46) when the coupling element (46) pivots relative to the second connector (54) by an angle equal to or greater than the predefined pivot angle.

8. The scraper device (10) according to claim 7, characterized in that The coupling element (46) has a first fixing surface (60), and the second connector (54) has a second fixing surface (62), the second fixing surface being configured such that the second fixing surfaces interact with each other in a position in which the coupling element (46) is pivoted relative to the second connector (54) by less than the predefined pivot angle, so as to fix the coupling element (46) in a position coupled to the liquid inlet (24) of the adapter (22), and in a position in which the coupling element (46) is pivoted relative to the second connector (54) by at least the predefined pivot angle, the coupling element (46) can be released from the second connector (54).

9. The scraper device (10) according to any one of claims 1 to 8, characterized in that The coupling element (46) can be pivotally fixed to the first connector (40).

10. The scraper device (10) according to any one of claims 1 to 9, characterized in that The spoiler (18) has a plurality of liquid nozzles (38) for spraying a cleaning liquid (34).

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