Wiper blade device

Abstract

The invention relates to a wiper blade device (10a; 10b; 10c) having at least one fluid channel (14a; 14b; 14c) and at least one wind deflector unit (18a; 18b; 18c), the fluid channel having at least one fluid outlet opening (16a, 16a'; 16b, 16b'; 16c, 16c'), in particular at least one nozzle element (50a, 50a'; 50b, 50b'; 50c, 50c'), for outputting fluid; the fluid channel (14a; 14b; 14c) being arranged on and / or in the wind deflector unit. It is proposed that the wiper blade device (10a; 10b; 10c) has at least one wiper blade end cap (12a, 12a'; 12b, 12b'; 12c, 12c') which forms at least one end piece of the fluid channel (14a; 14b; 14c).

Description

TECHNICAL FIELD

[0001] The present invention relates to a wiper blade device. BACKGROUND

[0002] A wiper blade device has been proposed which has at least one fluid channel and at least one wind deflector unit, the fluid channel having at least one fluid outlet opening, in particular at least one nozzle element, for outputting fluid, at least one fluid channel being arranged on and / or in the wind deflector unit. SUMMARY

[0003] The present invention relates to a wiper blade device which has at least one fluid channel and at least one wind deflector unit, the fluid channel having at least one fluid outlet opening, in particular at least one nozzle element, for outputting fluid, at least one fluid channel being arranged on and / or in the wind deflector unit.

[0004] It is proposed that the wiper blade device has at least one wiper blade end cap which forms at least one end piece of the fluid channel.

[0005] A "wiper blade device" is preferably to be understood as at least a part of a wiper blade, preferably a glass wiper blade, preferably a substructure assembly. The wiper blade device can preferably also comprise the entire wiper blade, preferably the entire glass wiper blade. The wiper blade device is preferably provided for mounting on a vehicle. The wiper blade device is preferably provided for cleaning a surface, preferably a vehicle glass. Preferably, the wiper blade device is coupled to the vehicle, preferably to a wiper arm of the vehicle, for cleaning the vehicle glass. "Provided" is preferably to be understood as specifically set, specifically designed and / or specifically equipped. Since an object is provided for a specific function, it is preferably to be understood that the object fulfils and / or implements the specific function in at least one application and / or operating state. "Operating state" is preferably to be understood as a state in which the wiper blade device is ready for a wiping process and / or a wiping operation, and / or in which the wiper blade device is located in a wiping operation in which the wiper strip unit of the wiper blade device is guided over and advantageously bears against a vehicle glass. The wind deflector unit is preferably provided for deflecting driving wind and / or for pressing the wiper blade, in particular the wiper blade device, onto a surface to be wiped, preferably a vehicle glass. The wind deflector unit preferably has at least one concave flow-through surface. The wiper blade device preferably has at least a wiper strip unit. The wiper strip unit preferably has a wiper base with a wiper lip formed from at least one elastic material. The fluid channel is preferably at least one channel-like recess and / or at least one channel delimited by a hose-like and / or at least one tube-like element, wherein the channel-like recess and / or the channel delimited by the hose-like and / or tube-like element is provided for guiding a fluid, preferably a wiping liquid. The fluid channel is preferably at least partially delimited by the wind deflector unit and / or the wiper strip unit. The fluid channel is preferably at least partially, preferably predominantly, configured as a hose and / or a tube. The fluid channel is preferably at least partially, preferably predominantly, delimited by a single-piece or multi-piece, preferably elastic, hose and / or a single-piece or multi-piece tube. The at least one fluid channel preferably has a constant maximum lateral extension perpendicular to its maximum extension. The elements delimiting the fluid channel can be at least partially connected to the at least one wind deflector unit and / or the at least one wiper strip unit. The hose-like element delimiting the at least one fluid channel can be, for example, glued, clamped, welded and / or fused to the wind deflector unit. The at least one fluid channel preferably has a connection to an external washing water reservoir. The at least one fluid channel preferably has at least one, preferably at least two, end regions open along its maximum extension. The at least one fluid channel preferably has at least one, preferably a plurality of, fluid outlet openings, for example channel-like lead-throughs to an external region with a constant maximum lateral extension and / or nozzle elements for outputting the fluid, which are uniformly distributed along the maximum extension of the fluid channel. The wiper blade device preferably has at least one, preferably at least two, wiper blade end caps. The at least one wiper blade end cap preferably has a main extension axis which is oriented at least substantially parallel to the main extension axis of the elements delimiting the fluid channel.The "main extension axis" of an object is preferably to be understood as an axis which extends parallel to the longest edge of a smallest cuboid which completely encloses the object. "Substantially parallel" is to be understood in particular as an orientation of a direction with respect to a reference direction, in particular in a plane, wherein the direction has a deviation from the reference direction, in particular of less than 8°, advantageously less than 5° and particularly advantageously less than 2°. Preferably, the at least one wiper blade end cap is arranged on an open end region of the at least one fluid channel. The at least one wiper blade end cap preferably forms at least one end piece of the at least one fluid channel in the direction of the greatest extension of the fluid channel. Preferably, the end piece of the fluid channel is a component which can be connected and disconnected from the fluid channel at the open end region and either fluidically plugs, in particular seals, the fluid channel or fluidically connects the fluid channel to an opening for outputting the fluid. The at least one wiper blade end cap is preferably provided for plugging into the at least one fluid channel. The at least one wiper blade end cap is preferably provided for at least partial insertion into the at least one open end region of the at least one fluid channel. Preferably, the at least one wiper blade end cap at least partially encloses at least one element delimiting the at least one fluid channel, in particular at least one hose-like element and / or at least one wind deflector. At least one portion of the at least one wiper blade end cap preferably extends into the at least one fluid channel at least 0.2 cm, preferably at least 0.4 cm, particularly preferably at least 0.8 cm, and particularly preferably at least up to the fluid output opening of the fluid channel arranged closest to the at least one open end region. The at least one wiper blade end cap preferably delimits at least one end cap hollow space, in particular with at least one element delimiting the fluid channel arranged therein.

[0006] The advantageous, in particular lateral, delimitation of the wiper blade device, in particular of the fluid channel, can be achieved by the design of the wiper blade device according to the application. Advantageous fluid output conditions can be achieved. An advantageous pressure distribution of the fluid in the fluid channel can be achieved. An advantageous uniform output of the fluid from the at least one fluid output opening can be achieved.

[0007] Furthermore, it is proposed that the at least one wiper blade end cap has at least one connecting protrusion which is provided for fluidically closing the fluid channel or fluidically connecting the fluid channel to a fluid output element of the wiper blade end cap. The at least one connecting protrusion is preferably / forms a delimiting element, in particular to fluidically seal against the fluid channel in the direction of the main extension axis of the element of the at least one delimiting fluid channel. The at least one connecting protrusion preferably extends from a middle region of the at least one wiper blade end cap in the direction of the opening of the at least one end cap hollow space. The at least one connecting protrusion preferably extends through the end cap hollow space from an inner wall in the direction of the main extension axis of the at least one wiper blade end cap, the inner wall being oriented at least substantially perpendicular to the main extension axis of the at least one wiper blade end cap. The expression "substantially perpendicular" is in particular to define an orientation of a direction relative to a reference direction, wherein the direction and the reference direction in particular enclose an angle of 90° in a projection plane, and the angle has a maximum deviation of in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2°. The at least one wiper blade end cap preferably has at least two connecting protrusions. The at least one connecting protrusion is preferably an elongated element with a constant maximum lateral extension. The at least one connecting protrusion preferably has a main extension axis which is oriented perpendicular to its maximum lateral extension and parallel to the main extension axis of the at least one wiper blade end cap. The maximum lateral extension of the at least one connecting protrusion is preferably greater than the maximum lateral extension of the at least one fluid channel, preferably by at least 0.1 mm. The at least one connecting protrusion is preferably at least partially extended into the at least one fluid channel in the at least one operating state. The at least one connecting protrusion is preferably extended into the at least one fluid channel in the at least one operating state by at least 0.2 cm, preferably by at least 0.5 cm, particularly preferably by at least 1.0 cm, and particularly preferably by at least up to the fluid output opening of the at least one fluid channel arranged closest to the at least one open end region. The at least one connecting protrusion has at least one sealing side, in particular an outer side with a face normal parallel to the main extension axis of the at least one connecting protrusion, which sealing side has at least partially, preferably predominantly, a surface structure which is different from a flat face. For example, the sealing side of the connecting protrusion is at least partially and preferably predominantly rounded. Preferably, the sealing side is at least partially beveled. Preferably, the sealing side is at least partially convexly configured, in particular from the view of the fluid channel. Alternatively, it is also conceivable that the sealing side is at least partially concavely configured, in particular from the view of the fluid channel. The at least one connecting protrusion preferably delimits at least one protrusion hollow space in its interior. The at least one protrusion hollow space preferably extends through the connecting protrusion in the main extension axis of the connecting protrusion. The at least one protrusion hollow space is preferably fluidically separated from the at least one fluid channel. An advantageously smaller fluid channel geometry can be achieved. An advantageously light end piece of the at least one fluid channel can be configured. An advantageous fluid output condition for the fluid output opening which is most distant from the fluid reservoir can be achieved.In an alternative design of the application, the at least one protrusion hollow space can be in fluid connection with the at least one fluid channel. The at least one wiper end cap preferably has at least one fluid output element. In this design, the at least one protrusion hollow space is preferably an end cap fluid channel. The at least one end cap fluid channel preferably connects the at least one fluid channel with the at least one fluid output element of the at least one wiper end cap. The at least one fluid output element of the at least one wiper end cap is preferably in fluid connection with the at least one end cap fluid channel for fluid output. The at least one fluid output element is preferably configured as an opening of the end cap fluid channel facing away from the end cap hollow space. The at least one wiper end cap preferably delimits an output recess around the at least one fluid output element, which has at least partially, preferably mostly, a rounded, in particular spherical, outer contour. The fluid connection of the at least one end cap fluid channel with the at least one fluid output element, in particular the fluid output element, preferably has a smaller through-flow cross section than the at least one end cap fluid channel. An advantageous distribution of the output fluid, in particular the output wiping liquid, can be achieved. An advantageously enlarged fluid output surface, in particular with respect to the wiper device without fluid output from the wiper end cap, can be achieved. An advantageously enlarged and fluid-wettable viewing window of the windshield, for example, can be achieved. Safety standards can advantageously be improved.

[0008] It is furthermore proposed that the at least one wiper end cap has at least one fluid output element having a fluid output direction which is oriented at least substantially transversely to the main extension axis of the fluid channel, in particular already mentioned. Preferably, the main extension axis of the at least one fluid channel is oriented at least substantially parallel to the main extension axis of the at least one wiper end cap. Preferably, the fluid output direction is the average direction of the fluid output of at least a majority of the fluid, for example the wiping liquid, during the fluid output process. Preferably, the fluid output direction of the at least one fluid output element has a maximum deviation of at most 30°, preferably at most 20°, particularly preferably at most 10°, from the direction transversely to, in particular at an angle of 90°, with respect to the main extension axis of the at least one fluid channel. An advantageous uniform fluid output image can be achieved. Fluid output into the region to be wiped can advantageously be achieved. An advantageously large fluid fraction can be used for cleaning during wiping. In particular, a wiper device can be configured which is advantageously fluid-saving.

[0009] It is further proposed that the at least one wiper blade end cap comprises at least one further fluid output element which is arranged on the same side of the wiper blade end cap as the at least one fluid output element. The at least one wiper blade end cap preferably has at least one fluid output element and at least one further fluid output element which is fluidically connected in the at least one connecting protrusion with the at least one end cap fluid channel. The at least one fluid output element is preferably arranged spaced apart from the at least one further fluid output element. The at least one further fluid output element can have a fluid output direction which is oriented at least substantially transversely, in particular perpendicularly, to the main extension axis of the at least one fluid channel with a deviation of at most 30°, preferably at most 20°, particularly preferably at most 10°. Preferably, the fluid output direction of the at least one further fluid output element differs from the fluid output direction of the at least one fluid output element by at least 5°, preferably by at least 30°, particularly preferably by at least 45°, and further particularly preferably by at least 60°. It is possible to achieve an advantageously increased area, in particular an observation area, of the glass to be wiped which is wetted with wiping liquid. In particular, it is possible to advantageously wet an overlapping area of two glass wipers on the glass with wiping liquid.

[0010] It is further proposed that the at least one fluid output element and / or the at least one further fluid output element of the at least one wiper blade end cap has a fluid output direction which differs from the fluid output direction of the at least one fluid output opening by at least 10°. Preferably, the fluid output direction of the at least one fluid output element differs from the fluid output direction of the at least one fluid output opening by at least 12.5°, preferably by at least 15°, particularly preferably by at least 20°, and further particularly preferably by at least 25°. Preferably, the fluid output direction of the at least one further fluid output element differs from the fluid output direction of the at least one fluid output opening by at least 30°, preferably by at least 45°, particularly preferably by at least 60°, and further particularly preferably by at least 75°. It is possible to achieve an advantageous fluid output which wets the entire near area of the wiping lip which is in wiping motion in the wiping direction with wiping liquid. It is possible to achieve a wetted surface which is advantageously large by the fluid output independently of the end cap geometry. It is possible to achieve an advantageously enlarged area of the glass which can be wiped with fluid, in particular wiping liquid.

[0011] It is further proposed that the at least one wiper blade end cap has at least one end cap fluid channel, in particular already mentioned, which extends to the at least one fluid output element via the at least one connecting protrusion and which has a maximum extension in a direction which is shorter than the maximum extension of the at least one wiper blade end cap in the same direction. Preferably, the at least one end cap fluid channel extends over at least 30%, preferably at least 50%, particularly preferably at least 80% and further particularly preferably at least 90% of the maximum extension of the at least one connecting protrusion in the direction of the main extension axis of the at least one connecting protrusion. Preferably, the at least one end cap fluid channel extends over at least 30%, preferably at least 50%, particularly preferably at least 80% and further particularly preferably at least 90% of the maximum extension of the at least one connecting protrusion in the direction perpendicular to the main extension axis of the at least one connecting protrusion. Preferably, the at least one end cap fluid channel has a rounded outer contour. Preferably, the at least one end cap fluid channel has a constant flow-through cross section over at least 50%, preferably at least 75% of its maximum extension in the direction of its main extension axis. Preferably, the at least one connecting protrusion extends at least substantially parallel to the main extension axis of the wiper blade end cap. Preferably, the at least one connecting protrusion extends over a maximum of 90%, preferably a maximum of 75%, particularly preferably a maximum of 50% of the maximum extension of the wiper blade end cap in the direction of the main extension axis of the wiper blade end cap. An advantageous fluid supply to the at least one fluid output element and / or to the at least one further fluid output element can be achieved.

[0012] It is further proposed that the at least one wiper blade end cap has at least one further end cap fluid channel, which is fluidically separated from the at least one end cap fluid channel. Preferably, the at least one further end cap fluid channel is fluidically connected with the at least one further fluid channel and / or the at least one fluid channel. Preferably, the at least one fluid channel and / or the at least one further fluid channel is fluidically connected with the at least one fluid reservoir via a fluid transport line and / or at least one further fluid transport line. Preferably, the at least one further end cap fluid channel extends at least substantially parallel to the at least one end cap fluid channel. Preferably, the at least one further end cap fluid channel is arranged on a side of the wiper blade end cap opposite to the at least one end cap fluid channel. Preferably, the at least one wiper blade end cap has at least one further connecting protrusion. Preferably, the at least one further end cap fluid channel is arranged in the further connecting protrusion of the at least one further wiper blade end cap. Preferably, the at least one further end cap fluid channel extends over at least 30%, preferably at least 50%, particularly preferably at least 80%, and further particularly preferably at least 90% of the maximum extension of the at least one further connecting protrusion in the direction of the main extension axis of the at least one further connecting protrusion. Preferably, the at least one further end cap fluid channel has a rounded outer contour. Preferably, the at least one further end cap fluid channel has a constant flow-through cross section over at least 50%, preferably at least 75%, of its maximum extension in its main extension axis. Preferably, the at least one further connecting protrusion extends at least substantially parallel to the main extension axis of the wiper blade end cap. Preferably, the at least one further connecting protrusion extends over a maximum of 90%, preferably a maximum of 75%, particularly preferably a maximum of 50%, of the maximum extension of the wiper blade end cap in the direction of the main extension axis of the at least one wiper blade end cap. An advantageous fluid output possibility on both mutually facing sides of the at least one wiper blade end cap can be realized. A symmetrical, in particular symmetrically loaded wiper blade end cap can be realized advantageously. A wiper blade end cap with advantageously little wear can be realized. At least two independent fluid paths can be realized in the wiper blade end cap advantageously. An alternative fluid line can be realized in the at least one wiper blade end cap.

[0013] It is further proposed that the at least one wiper blade end cap comprises at least one additional fluid outlet element which is arranged on the side of the at least one wiper blade end cap which faces away from the at least one fluid outlet element. The at least one wiper blade end cap preferably comprises at least two additional fluid outlet elements. Preferably, the at least two additional fluid outlet elements are arranged on the side of the at least one wiper blade end cap which faces away from the at least one fluid outlet element. Preferably, the at least one additional fluid outlet element is in fluid connection with at least one further end cap fluid channel. Preferably, the at least one additional fluid outlet element has a fluid outlet direction which differs from the fluid outlet direction of the at least one fluid outlet element by the same angle from an axis perpendicular to the main extension axis of the wiper blade end cap. Preferably, the at least one additional fluid outlet element has a fluid outlet direction which differs from the fluid outlet direction of the at least one output opening and from the fluid outlet direction of the at least one fluid outlet element by the same angle. The at least one wiper blade end cap preferably has at least one further additional fluid outlet element. The at least one further additional fluid outlet element and the at least one additional fluid outlet element are preferably arranged on the same side of the wiper blade end cap. The at least one further additional fluid outlet element preferably has a fluid outlet direction which differs from the fluid outlet direction of the at least one additional fluid outlet element. The at least one further additional fluid outlet element preferably has a fluid outlet direction which differs from the fluid outlet direction of the at least one further fluid outlet element by the same angle from an axis perpendicular to the main extension axis of the wiper blade end cap. The at least one further additional fluid outlet element preferably has a fluid outlet direction which differs from the fluid outlet direction of the at least one fluid outlet element by the same angle as the fluid outlet direction of the at least one fluid outlet element differs from the fluid outlet direction of the at least one output opening. Preferably, the fluid outlet directions of all fluid outlet elements are oriented towards the surface to be wiped, in particular glass. A wiper blade end cap with a fluid outlet function which is particularly advantageous in terms of the variety of wiper blade arrangements and in particular in terms of the two indicated wiping directions along the wiping process can be achieved. An advantageously simple producible and / or installable wiper blade end cap, in particular due to the symmetrical construction, can be achieved. An advantageously symmetrical fluid outlet condition can be achieved.

[0014] It is further proposed that the wiper blade device has at least one sealing unit which is provided for sealing the connection between the fluid channel and the connecting protrusion of the wiper blade end cap. The at least one sealing unit preferably has at least one sealing element which is provided for fluidically sealing the at least one fluid channel, in particular with respect to the at least one, in particular further, connecting protrusion. The at least one sealing unit preferably has at least one further sealing element which is provided for fluidically sealing the at least one further fluid channel. Preferably, the wiper blade end cap has, in order to couple with the at least one fluid channel and / or the at least one further fluid channel, preferably on the at least one connecting protrusion and / or on the at least one further connecting protrusion, at least one sealing, in particular at least one sealing edge, with which a fluidically sealed coupling can be achieved. The at least one connecting protrusion and / or the at least one further connecting protrusion preferably has at least one sealing, in particular on an outer surface, preferably on an outer surface which, in the at least one operating state, is in contact with an element delimiting the at least one fluid channel and / or the at least one further fluid channel. Alternatively or additionally, the at least one sealing can also comprise a sealing ring, for example an O-ring, and / or further sealings which are common to the person skilled in the art. A fluidically advantageously sealed connection can be achieved. An advantageously sparing, in particular material- and / or cost-sparing, wiper blade device can be achieved. An advantageously fluid distribution can be ensured between the fluid channel and the wiper blade end cap, in order to carry out a dedicated output in order to support the wiping process.

[0015] It is further proposed that a wiper system has at least one wiper arm, at least one wiper blade and at least one wiper blade device according to the invention. The wiper arm preferably has at least one fluid transport line and / or at least one further fluid transport line for coupling with the at least one fluid channel.

[0016] The wiper blade device according to the invention and / or the wiper system according to the invention should not be limited to the above-mentioned applications and embodiments here. The wiper blade device according to the invention and / or the wiper system according to the invention can in particular have a different number of the elements, components and units mentioned therein in order to meet the functional modes described here. Furthermore, within the value ranges specified in the disclosure, the values within the limits should also be considered as disclosed and as arbitrarily usable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Further advantages result from the description of the subsequent figures. Three embodiments of the invention are shown in the figures. The figures and the description contain a large number of combination features. The person skilled in the art also observes these features individually and in suitable combinations and generalizes them to meaningful further combinations.

[0018] wherein:

[0019] Figure 1 A wiper system according to the application is shown in a schematic view;

[0020] Figure 2 A wind deflection unit of a wiper blade device according to the application is shown in a schematic view;

[0021] Figure 3 A wiper blade end cap of a wiper blade device according to the application is shown in a schematic cross-sectional view;

[0022] Figure 4 A wiper blade end cap of an alternative design of a wiper blade device according to the application is shown in a schematic cross-sectional view;

[0023] Figure 5 A wiper blade end cap of an alternative design of a wiper blade device according to the application is shown in a schematic cross-sectional view;

[0024] Figure 6 A wind deflection unit of an alternative design of a wiper blade device according to the application is shown in a schematic view; and

[0025] Figure 7 A wind deflection unit of an alternative design of a wiper blade device according to the application is shown in a schematic view. DETAILED DESCRIPTION

[0026] Figure 1 A wiper system 40 is shown. The wiper system 40 comprises at least one wiper arm 44a and at least one wiper blade 42a. The wiper blade 42a comprises at least one wiper blade device 10a.

[0027] The wiper blade 42a comprises a wiper strip unit having a wiper lip.

[0028] The wiper blade device 10a comprises at least one fluid channel 14a. The wiper blade device 10a comprises at least one wind deflection unit 18a. In the wind deflection unit 18a at least one fluid channel 14a is arranged (see Figure 2 ).

[0029] The fluid channel 14a comprises at least one, in particular for example two, fluid output openings 16a, 16a'. The at least one fluid output opening 16a, 16a' is provided for outputting a fluid. For example the two fluid output openings 16a, 16a' have a fluid output direction 66a, 66a', respectively. The for example two fluid output directions 66a, 66a' of the fluid output openings 16a, 16a' extend in particular parallel to each other.

[0030] The fluid channel 14a extends along the main extension axis 54a of the wind deflector unit 18a over the maximum extension of the wind deflector unit 18a. The fluid channel 14a can extend at least substantially along the main extension axis 54a of the wind deflector unit 18a over the maximum extension of the curved wind deflector unit 18a. The wiper blade arrangement 10a has at least one wiper blade end cap 12a, 12a'. The at least one wiper blade end cap 12a, 12a' forms at least one end piece of the fluid channel 14a, in particular to fluidically seal the fluid channel. The fluid channel 14a has two open end regions 74a, 74a' at the ends of its maximum extension.

[0031] The at least one wiper blade end cap 12a, 12a' has at least one connecting protrusion 20a. The connecting protrusion 20a is an elongated material element which is connected with the wiper blade end cap 12a, 12a'. The connecting protrusion 20a is connected with the wiper blade end cap 12a, 12a' on one side in a direction perpendicular to the main extension axis 58a of the wiper blade end cap 12a, 12a'. The connecting protrusion 20a is connected with the wiper blade end cap 12a, 12a' in a middle region of the wiper blade end cap 12a, 12a' on the inner wall 60a. The connecting protrusion 20a is integrally configured with the wiper blade end cap 12a, 12a', in particular of the same material. The connecting protrusion 20a extends from the middle region of the inner wall 60a of the wiper blade end cap 12a, 12a' in the direction of the main extension axis 58a of the wiper blade end cap 12a, 12a' through the hollow space 56a delimited by the wiper blade end cap 12a to the end of the maximum extension of the wiper blade end cap 12a, 12a'. The wiper blade end cap 12a, 12a' is connected with the at least one fluid channel 14a on the open end region 74a, 74a', in particular at least partially inserted into the fluid channel 14a.

[0032] The connecting protrusion 20a delimits a hollow space 38a in its interior. The hollow space 38a is provided to improve the flexibility, in particular the installation friendliness, of the at least one wiper blade end cap 12a, 12a'. The hollow space 38a is provided to reduce the weight of the wiper blade end cap 12a, 12a'. The connecting protrusion 20a is provided to fluidically close the fluid channel 14a.

[0033] The connecting protrusion 20a is arranged in the fluid channel 14a, in particular with the free end, in sections in at least one operating state. The connecting protrusion 20a is inserted into the fluid channel 14a with an insertion extension 70a of at least 0.5 cm in at least one operating state. The connecting protrusion 20a is completely resting on the element delimiting the fluid channel 14a, in particular the wind deflector unit 18a, in the region of the fluid channel 14a in the peripheral direction of the connecting protrusion 20a in sections, in particular with the free end, in at least one operating state.

[0034] The connecting protrusion 20a has at least one sealing side 62a. The sealing side 62a is arranged on a maximally extended free end in the direction of the main extension axis 58a of the wiper blade end cap 12a. The sealing side 62a has a rounded outer contour. The rounded outer contour of the sealing side 62a can simplify the mounting of the wiper blade end cap 12a, 12a' and / or have a positive effect on the fluid pressure in the fluid channel 14a. It is conceivable that the sealing side 62a has a flat outer contour. The wiper blade device 10a has at least one sealing unit 72a. The sealing unit 72a is provided for sealing the connection between the fluid channel 14a and the connecting protrusion 20a of the wiper blade end cap 12a, in particular from fluids. The sealing unit 72a comprises a sealing ring 64a. The sealing ring 64a is arranged on the connecting protrusion 20a. The sealing ring 64a encloses the connecting protrusion 20a. The wiper blade end cap 12a provides the possibility of fluidically sealing the fluid channel.

[0035] In Figures 4 to 7 a further embodiment of the application is shown. The following description and the figures are essentially limited to the differences between the embodiments, wherein with regard to components denoted identically, in particular with regard to components having the same reference numerals, reference can also be made in principle to the figures and / or the description of the other embodiments, in particular Figures 1 to 3 . In order to distinguish the embodiments, the reference numerals in Figures 1 to 3 are followed by the letter a. In Figures 4 to 7 the embodiments, the letter a is replaced by the letters b and c.

[0036] Figure 4 A wiper blade end cap 12b, 12b' of an alternative wiper blade device 10b is shown. The at least one wiper blade end cap 12b, 12b' has at least one fluid output element 22b. The at least one wiper blade end cap 12b, 12b' comprises at least one further fluid output element 24b, which is arranged on the same side of the wiper blade end cap 12b, 12b' as the at least one fluid output element 22b.

[0037] The connecting protrusion 20b is provided for connecting the fluid channel 14b in fluid connection with the at least one fluid output element 22b of the wiper blade end cap 12b. The connecting protrusion 20b is arranged at least partially in the fluid channel 14b, in particular inserted into the fluid channel 14b, in at least one operating state. The at least one wiper blade end cap 12b, 12b' has at least one end cap fluid channel 30b. The end cap fluid channel 30b extends to the at least one fluid output element 22b via the at least one connecting protrusion 20b. The connecting protrusion 20b delimits the end cap fluid channel 30b. The end cap fluid channel 30b has a maximum extension in a direction which is shorter than a maximum extension of the at least one wiper blade end cap 12b, 12b' in the same direction. The at least one fluid output element 22b and / or the at least one further fluid output element 24b is configured as an opening of the end cap fluid channel 30b in the direction of the outer region of the wiper blade end cap 12b, 12b'. The at least one fluid output element 22b and / or the at least one further fluid output element 24b is surrounded by a spherical outer contour. The at least one wiper blade end cap 12b, 12b' delimits an output recess 68b, 68b' around the at least one fluid output element 22b and / or the at least one further fluid output element 24b. The output recess 68b, 68b' has a mostly spherical outer contour. The fluid output element 22b has a fluid output direction 46b which is oriented at least substantially transversely to the main extension axis 52b of the fluid channel 14b. The fluid output element 22b has a fluid output direction 46b which encloses a minimum angle of at least 50° with the main extension axis 52b of the fluid channel 14b. The further fluid output element 24b has a fluid output direction 46b which encloses a minimum angle of at least 10° with the main extension axis 52b of the fluid channel 14b. The at least one fluid output element 22b of the at least one wiper blade end cap 12b has a fluid output direction 46b which differs by at least 10° from the fluid output direction 66b of the at least one fluid output opening 16b. The at least one further fluid output element 24b of the at least one wiper blade end cap 12b has a fluid output direction 46b' which differs by at least 10° from the fluid output direction 66b of the at least one fluid output opening 16b. The at least one fluid output element 22b of the at least one wiper blade end cap 12b has a fluid output direction 46b which differs by at least 30° from the fluid output direction 46b' of the at least one further fluid output element 24b.

[0038] Figure 5 It is shown that at least one fluid channel 14b is arranged on the wind deflector unit 18b. The fluid channel 14b is arranged on the outside of the wind deflector unit 18b (see Figure 5). The fluid channel 14b is delimited by a hose and / or a tube. The hose and / or tube delimiting the fluid channel 14b is connected, in particular glued, clamped or clipped, with the wind deflection unit 18b. The design of the fluid channel 14b can be transferred without problems to the further alternative design, in particular with the letter a or c. The wiper blade end cap 12b provides the possibility to guide a fluid, in particular water, through an internal path, in particular from the wiper blade 42b. The wiper blade end cap 12b provides the possibility to spray a fluid, in particular water, onto the windscreen. The at least one wiper blade end cap 12b, 12b’ forms at least one end piece of the fluid channel 14b, in particular to fluidically connect with the at least one fluid output element 22b.

[0039] Figure 6 A wiper blade end cap 12c, 12c’ of an alternative wiper blade device 10c is shown. The at least one wiper blade end cap 12c, 12c’ is partially configured similar to the wiper blade end cap 12b, 12b’ of the previous embodiment. The at least one wiper blade end cap 12c has at least one further connection protrusion 34c. The at least one wiper blade end cap 12c has at least one further end cap fluid channel 36c. The further end cap fluid channel 36c is fluidically separated from the at least one end cap fluid channel 30c. The at least one further end cap fluid channel 36c is delimited by the at least one further connection protrusion 34c and extends, in particular, through the at least one further connection protrusion 34c at least 90% of the maximum extension of the at least one further connection protrusion 34c in the direction of the main extension axis 58c of the wiper blade end cap 12c, 12c’. The at least one further connection protrusion 34c is arranged on the side of the at least one wiper blade end cap 12c facing away from the at least one fluid output element 22c. The at least one further connection protrusion 34c connects the at least one further fluid channel 32c with the at least one additional fluid output element 26c (see Fig. 6) in the at least one operating state. Figure 6 and 7 ). The wiper blade end cap 12c, 12’ is configured mirror-symmetrically, in particular with respect to the arrangement of the connection protrusion 20c and the further connection protrusion 34c.

[0040] The at least one wiper blade end cap 12c comprises at least one additional fluid output element 26c. The at least one wiper blade end cap 12c comprises at least one further additional fluid output element 28c. The at least one additional fluid output element 26c is arranged on a side of the at least one wiper blade end cap 12c facing away from the at least one fluid output element 22c. The at least one further additional fluid output element 28c is arranged on a side of the at least one wiper blade end cap 12c facing away from the at least one fluid output element 22c. The at least one wiper blade end cap 12c, 12' delimits an output recess 68c'', 68c''' around the at least one additional fluid output element 26c and / or the at least one further additional fluid output element 28c.

[0041] The at least one additional fluid output element 26c of the at least one wiper blade end cap 12c has a fluid output direction 48c which differs from the fluid output direction 66c, 66c' of the opening of the at least one fluid output opening 16c, 16c', in particular of the at least one nozzle element 50c, 50c', by at least 50°. The at least one further additional fluid output element 28c of the at least one wiper blade end cap 12c has a fluid output direction 48c' which differs from the fluid output direction 66c of the at least one fluid output opening 16c by at least 10°. The at least one additional fluid output element 26c of the at least one wiper blade end cap 12 has a fluid output direction 48c which differs from the fluid output direction 48c' of the at least one further additional fluid output element 28c by at least 30°. The wiper blade end cap 12c, 12c' is mirror-symmetrically configured with respect to the fluid output directions 46c, 46c', 48c, 48c' of the fluid output elements 22c, 24c, 26c, 28c.

[0042] Figure 7 It is shown that the fluid channel 14c comprises at least one nozzle element 50c, 50c'. The at least one fluid output opening 16c, 16c' is configured as the at least one nozzle element 50c, 50c'. The fluid channel 14c comprises, in particular, for example, two nozzle elements 50c, 50c'. The at least one nozzle element 50c, 50c' can be transferred without difficulty to further alternative embodiments of the windscreen unit 18a, 18b, in particular having the designations a or b.

Claims

1. A wiper blade device, comprising at least one fluid channel (14a; 14b; 14c) and at least one baffle unit (18a; 18b; 18c), said fluid channel having at least one fluid outlet opening (16a, 16a'; 16b, 16b'; 16c, 16c') for discharging fluid; wherein at least one fluid channel (14a; 14b; 14c) is arranged on and / or in said baffle unit, characterized in that... At least one wiper blade end cap (12a, 12a'; 12b, 12b'; 12c, 12c') forms at least one end component of a fluid passage (14a; 14b; 14c), wherein the at least one wiper blade end cap (12b, 12b'; 12c, 12c') has at least one connecting protrusion (20b; 20c) configured for fluidly connecting the fluid passage (14b; 14c) to a fluid output element (22b; 22c) of the wiper blade end cap (12b, 12b'; 12c, 12c'), wherein the at least one wiper blade end cap (12b, 12b'; 12c) 12b, 12c') has at least one fluid output element (22b; 22c) and at least one additional fluid output element (24b; 24c), wherein at least one fluid output element (22b; 22c) and / or at least one additional fluid output element (24b; 24c) of at least one wiper end cap (12b, 12b'; 12c, 12c') has a fluid output direction (46b, 46b'; 46c, 46c') that differs from the fluid output direction (66b, 66b'; 66c, 66c') of at least one fluid output opening (16b, 16b'; 16c, 16c') by at least 10º.

2. The wiper blade device according to claim 1, characterized in that, The fluid output element has a fluid output direction (46b; 46c) oriented at least substantially transverse to the main extension axis (52b; 52c) of the fluid channel (14b; 14c).

3. The wiper blade device according to claim 1 or 2, characterized in that, The additional fluid output element is arranged on the same side as the wiper end cap (12b, 12b'; 12c, 12c') and at least one fluid output element (22b; 22c).

4. The wiper blade device according to claim 2, characterized in that, At least one wiper end cap (12b, 12b'; 12c, 12c') has at least one end cap fluid passage (30b; 30c) extending through at least one connecting protrusion (20b; 20c) to at least one fluid output element (22b, 22b'; 22c, 22c'), and the end cap fluid passage has a maximum extension in one direction that is shorter than the maximum extension of the at least one wiper end cap (12b, 12b'; 12c, 12c') in the same direction.

5. The wiper blade device according to claim 4, characterized in that, At least one wiper blade end cap (12c, 12c') has at least one additional end cap fluid channel (36c) which is fluidly separated from at least one end cap fluid channel (30c).

6. The wiper blade device according to claim 1 or 2, characterized in that, At least one wiper blade end cap (12c, 12c') includes at least one additional fluid output element (26c) disposed on the side of at least one wiper blade end cap (12c, 12c') opposite to at least one fluid output element (22c).

7. The wiper blade device according to claim 1, characterized in that... At least one sealing unit (72a; 72b; 72c) is provided for sealing the connection between the fluid passage (14a; 14b; 14c) and the connecting protrusion (20a; 20b; 20c) of the wiper blade end cap (12a, 12a'; 12b, 12b'; 12c, 12c').

8. The wiper blade device according to claim 1, characterized in that, The fluid output openings (16a, 16a'; 16b, 16b'; 16c, 16c') are nozzle elements (50a, 50a'; 50b, 50b'; 50c, 50c').

9. A wiper system (40a) having at least one wiper arm (44a) and at least one wiper blade (42a), comprising at least one wiper blade device (10a; 10b; 10c) according to any one of claims 1 to 8.

Images