DE102018222277A1 - Wiper blade device - Google Patents

Abstract

The invention relates to a wiper blade device (10) with at least one spring rail (12) and with at least one wiper blade adapter (14) attached to the spring rail (12) for connection to at least one wiper arm (20), the wiper blade adapter (14) at least The wiper blade adapter (14) has a first partial adapter (16) attached to the spring rail (12) and a second partial adapter (18) which is attached to the first partial adapter (16). is attached and has the fluid channel (22).

Description

State of the art

A wiper blade device with at least one spring rail and with at least one wiper blade adapter attached to the spring rail for connection to at least one wiper arm has already been proposed, the wiper blade adapter having at least one fluid channel for a cleaning fluid.

Disclosure of the invention

The invention is based on a wiper blade device with at least one spring rail and with at least one wiper blade adapter fastened to the spring rail / spring rails for connection to at least one wiper arm, the wiper blade adapter having at least one fluid channel, in particular two fluid channels, for a cleaning fluid.

It is proposed that the wiper blade adapter have a first partial adapter fastened to the spring rail / the spring rails and a second partial adapter, which is fastened to the first partial adapter and has the fluid channel.

In particular, the first partial adapter is designed differently from the second partial adapter. The first partial adapter and / or the second partial adapter are in particular each made of a plastic material, in particular by means of an injection molding process. The first partial adapter and the second partial adapter are advantageously made of the same material and / or each of a material with at least a large part of the same, in particular thermal, physical and / or chemical properties. The expression “to at least a large part” should be understood to mean in particular at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95%. The first partial adapter and the second partial adapter advantageously have, at least in part, a different shape, surface structure, texture and / or size and in particular take on different tasks. The first partial adapter and the second partial adapter can advantageously be connected to one another, in particular inseparably. In particular, the first sub-adapter is at least partially cohesively, in particular by means of an ultrasonic welding process, to which, in particular at a connection point with the first sub-adapter, at least partially surface-coated and / or powder-coated spring rail / spring rails are attached. Alternatively or additionally, the first partial adapter can be fastened to the spring rail / spring rails by means of further connection or fastening types, for. B. by means of an adhesive connection, a thermal direct joining and / or at least partially by means of a positive connection. In particular, the first partial adapter can be designed as a unit and / or universal adapter, which can be connectable to differently designed second partial adapters.

In this context, a “wiper blade device” is to be understood in particular to mean at least a part, in particular a subassembly, of a wiper blade, in particular a windshield wiper blade and advantageously a vehicle windshield wiper blade. In particular, the wiper blade device can also comprise the entire wiper blade, in particular the entire windshield wiper blade and advantageously the entire vehicle windshield wiper blade. It is conceivable that the wiper blade device is designed at least as part of a wiper blade in a flat beam construction and / or at least as part of a flat beam wiper and / or as a wiper blade in a flat beam construction and / or as a flat beam wiper. The wiper blade device is preferably intended for use on a vehicle, in particular on a motor vehicle. The wiper blade device is preferably provided for cleaning a surface, in particular a vehicle window, on a vehicle. In particular, the wiper blade device is coupled to a vehicle, in particular a wiper arm of a windshield wiper, for cleaning a vehicle window. In this context, “coupled” is to be understood to mean in particular a form-fitting and / or force-fitting connection. In particular, the wiper blade device can be captively coupled to the wiper arm. “Captively coupled, fastened or connected” is to be understood to mean that two components are coupled, fastened or connected in such a way that the coupling or connection, in particular exclusively, can be released using at least one tool. “Provided” is to be understood in particular to be specially designed, specially designed and / or specially equipped. The fact that an object is provided for a specific function should in particular be understood to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. The windshield wiper is provided for cleaning a vehicle window, in particular a front and / or rear window of a vehicle.

A “spring rail” is to be understood in particular as a macroscopic element which has at least one extension, which in a normal operating state can be elastically changed by at least 10%, in particular by at least 20%, preferably by at least 30% and particularly advantageously by at least 50% , and the in particular generates a counterforce which is dependent on a change in the extension and is preferably proportional to the change and which counteracts the change. The at least one spring rail is preferably at least partially formed from a metal or a metal alloy. As an alternative or in addition, the spring rail is at least partially formed from a plastic, from a composite material or from another material that appears reasonable to a person skilled in the art. The spring rail is preferably at least partially formed from a spring steel. In an unloaded state, the spring rail preferably has essentially a shape of a curved rod and particularly advantageously a flattened curved rod. The spring rail is also advantageously formed in one piece. Alternatively, the spring rail can be designed in several parts. A curvature of the spring rail along the spring rail in an unloaded state is particularly advantageous greater than a curvature of a vehicle window surface of a motor vehicle, in particular a vehicle window, over which the spring rail is guided in at least one operating state. An “elastically changeable” object is to be understood in particular to mean an object which can be deformed repeatedly without the object being mechanically damaged or destroyed, and which in particular automatically strives for a basic shape again after deformation. The wiper blade device preferably comprises at least one spring rail, preferably exactly two spring rails.

In this context, a “wiper blade adapter” is to be understood in particular to mean an adapter which has a contact area to a wiper blade component of the wiper blade device and is captively connected to the wiper blade component and is provided to provide a coupling area of the wiper blade component for coupling and / or contacting with a wiper arm adapter . In particular, the wiper blade adapter can be made in several parts. In this context, a “wiper arm adapter” is to be understood in particular to mean an adapter which has a contact area with a wiper arm component of the wiper arm and is captively connected to the wiper arm component and is intended to provide a coupling area of the wiper arm component for a connection, in particular fluid technology, for connection, coupling and / or to make contact with a wiper blade adapter. The wiper blade adapter is advantageously formed in one piece. “One-piece” is to be understood to mean, in particular, a material connection, such as by a welding process, ultrasonic welding process and / or adhesive process, etc., and is particularly advantageously to be molded on, such as by manufacturing from a casting and / or by manufacturing in a single- or multi-component injection molding process. One-piece should also advantageously be understood as one-piece. “One-piece” is to be understood in particular as being formed in one piece. This one piece is preferably produced from a single blank, a mass and / or a casting, particularly preferably in an injection molding process, in particular a single and / or multi-component injection molding process.

A “wiper arm” is to be understood in particular as a unit of the windshield wiper, which is intended to move the wiper blade device, in particular fastened to the wiper arm by the wiper blade adapter and / or wiper arm adapter, and in particular a wiper blade of the wiper blade device for cleaning the vehicle window over the vehicle window. The wiper arm is preferably arranged on at least one drive shaft of a wiper drive of the windshield wiper of the vehicle. In particular, the wiper arm can be driven by the wiper drive to move relative to the vehicle window.

A “fluid channel” is to be understood in particular as a channel-like recess with an at least essentially oval, polygonal and preferably circular cross section. In particular, the fluid channel has at least one fluid connection to a wiper arm adapter and is in particular provided to conduct at least one cleaning fluid, in particular from the wiper arm adapter into the wiper blade adapter and in particular further to a fluid output unit of the wiper blade device. In particular, the fluid channel has at least one further fluid connection to the fluid dispensing unit and is in particular intended to conduct at least the cleaning fluid, in particular from the wiper blade adapter to a fluid dispensing unit of the wiper blade device. The fluid dispensing unit is provided in particular for dispensing, in particular spraying, the cleaning fluid onto the vehicle pane for cleaning the vehicle pane. The cleaning fluid is preferably designed as a wiping water, in particular as a mixture of at least water and at least one anti-freeze additive.

The inventive configuration of the wiper blade device can advantageously provide a wiper blade device with a wiper blade adapter with a first partial adapter fastened to the spring rail / the spring rails and with a second partial adapter which is fastened to the first partial adapter and has at least one fluid channel, in particular two fluid channels . In particular, an advantageous, in particular universal, construction of the wiper blade adapter can be made possible. A seal-free construction, in particular of the wiper blade adapter, can advantageously be used advantageously with Standard processes, such as ultrasonic welding, can be implemented. In particular, cost efficiency can be increased.

It is also proposed that the second partial adapter be arranged on a side of the first partial adapter facing away from the spring rail / the spring rails. In particular, the second sub-adapter is indirectly attached to the spring rail / the spring rails. As a result, an advantageously firm and / or secure connection can be established between the first partial adapter and the second partial adapter. In particular, the second sub-adapter with different shapes, surface structures, textures and / or sizes can thereby be connected to the first sub-adapter. In particular, this can reduce the amount of work involved in assembling and / or fastening the wiper blade adapter to the spring rail / the spring rails. The opposite side of the first partial adapter is in particular at least partially, in particular completely, designed as a coupling surface. In particular, the second sub-adapter has a further coupling surface that at least partially corresponds to the coupling surface of the first sub-adapter. In particular, when viewed in the direction of assembly of the wiper blade adapter, the second sub-adapter in an assembled state, advantageously completely, covers the first sub-adapter.

Furthermore, it is proposed that the first partial adapter and the second partial adapter be at least cohesively connected to one another, in particular inseparably. In this way, in particular a stable and / or resilient connection can be created between the first partial adapter and the second partial adapter. In particular, the first partial adapter and the second partial adapter are integrally connected to one another by means of an ultrasound method. In this way, a cost reduction and / or a time reduction can advantageously be achieved. In particular, sides of the first partial adapter and the second partial adapter facing one another form a common contact surface in the assembled state and are advantageously integrally connected to one another in the entire common contact surface.

In addition, it is proposed that the first sub-adapter and second sub-adapter be seal-free, in particular fluid-tight against ingress of a fluid from the outside into an inner region of the wiper blade adapter, for example into a fluid channel of the wiper blade adapter, and / or a cleaning fluid escaping from the wiper blade adapter, for example from a Fluid channel of the wiper blade adapter, are connected to each other to the outside. In this way, in particular, an advantageous sealing of the wiper blade adapter can be achieved. In particular, this can at least partially enable trouble-free and / or cleaning fluid-saving operation, which in particular increases customer satisfaction. In particular, additional seals such as rubber or Teflon can be dispensed with, which can advantageously increase longevity and / or cost-effectively. In particular, the wiper blade adapter is sealed by the positive and / or integral connection between the first partial adapter and the second partial adapter.

Furthermore, it is proposed that the second partial adapter have at least one opening, in particular two openings, of the fluid channel, which is / are closed, in particular permanently, by the first partial adapter. In this way, an advantageously high level of tightness of the wiper blade adapter can be achieved. In particular, the opening is arranged on a side of the second partial adapter facing the first partial adapter. In particular, the fluid channel has three fluid openings, two fluid openings being provided for a fluid-technical connection of the second partial adapter to the fluid dispensing unit and a fluid opening for an, in particular indirect, fluid-technical connection of the second partial adapter to the wiper arm.

It is also proposed that the opening is / are a demolding opening, in particular the two openings are each a demolding opening. This enables, in particular, simple manufacture of the second sub-adapter, in particular by injection molding, which enables cost-effective manufacture. As a result, a number of openings which are not used in at least one operating state can advantageously be reduced to two.

It is further proposed that the fluid channel have at least one first partial channel and at least one second partial channel, which are at different distances from the first partial adapter. In particular, the first subchannel and the second subchannel extend at least substantially parallel to the spring rail / the spring rails. In particular, the spring rails are aligned parallel to one another. In this context, “at least essentially parallel” is to be understood in particular to mean that a deviation of a direction and / or orientation from a reference direction and / or a plane from a parallel orientation is in particular less than 10 °, preferably less than 5 ° and particularly is preferably less than 1 °. In particular, the first subchannel and the second subchannel extend at least substantially parallel to one another. In particular, the second sub-adapter has two first and two second sub-channels, which run at least substantially parallel to each other. In particular, the second sub-channel advantageously extends along a longitudinal extent of the second sub-adapter, in particular from a first side of the second sub-adapter to a second side of the second sub-adapter opposite the first side. In particular, the first subchannel and second subchannel are arranged at least in sections one above the other, in particular directly one above the other, along a direction running transversely to the longitudinal extent. In this context, a “longitudinal extension” is to be understood in particular to mean the greatest possible extension. In this context, an “extension” of an element is to be understood in particular as a maximum distance between two points of a perpendicular projection of the element onto a plane. In particular, the second subchannel has two fluid openings through which in particular the cleaning fluid flows out of the second subadapter in the direction of the fluid dispensing unit in at least one operating state. In particular, the first sub-channel advantageously extends along the longitudinal extent of the second sub-adapter, in particular from one side of the second sub-adapter into an inner region of the second sub-adapter. In particular, the first subchannel has a fluid opening through which the cleaning fluid in particular flows into the second subadapter. In particular, the first subchannel is fluidly connected to the second subchannel by a third subchannel. In particular, the third subchannel extends transversely to the first and second subchannels. In particular, an end of the first subchannel located in the inner region of the second subadapter is fluidly connected to the third subchannel. In particular, the third subchannel crosses the second subchannel. In particular, the third sub-channel has the opening on a side of the second sub-adapter facing the first sub-adapter, which is designed as a demolding opening. In this way, an advantageous transport and / or a conduction and / or distribution of the cleaning fluid through the wiper blade adapter can take place.

It is further proposed that the first subchannel designed as a fluid inlet channel is at a greater distance from the first subadapter than the second subchannel designed as a fluid outlet channel. In this way, in particular, an advantageous arrangement and / or configuration of the fluid channel can be achieved, as a result of which a supply and / or an outlet of the cleaning fluid can be favored. The respective distance between the fluid inlet channel and the fluid outlet channel is advantageously constant over an entire extent of the first and second subchannels. In particular, the two first subchannels are arranged at least substantially at the same distance from the first subadapter and in particular next to one another. In particular, the two second subchannels are arranged at least essentially at the same distance from the first subadapter, in particular next to one another. In this context, “at least essentially” is to be understood in particular to mean that a deviation from a predetermined value deviates in particular less than 25%, preferably less than 10% and particularly preferably less than 5% of the predetermined value.

In addition, it is proposed that at least the second subchannel have at least two fluid openings, which are oriented in opposite directions with respect to a longitudinal direction of the spring rail / the spring rails. In particular, the second sub-channel extends over an entire longitudinal extent of the second sub-adapter. As a result, in particular the cleaning fluid can advantageously flow in opposite directions from the wiper blade adapter, in particular from the second partial adapter, into the fluid dispensing unit, which in particular enables the cleaning fluid to be supplied more quickly to the entire fluid dispensing unit and, in particular, thereby promptly cleaning the vehicle window.

It is also proposed that the second partial adapter have a closed, sealless surface on a side facing away from the first partial adapter. As a result, in particular additional seals, in particular any seals, can be dispensed with, as a result of which manufacturing costs and / or construction complexity can advantageously be reduced. In particular, the closed, sealless surface forms an upper side of the second partial adapter.

Furthermore, it is proposed that the second partial adapter be made in one piece. In this way, a production period can advantageously be reduced, which in particular enables cost-efficient production. In particular, the second partial adapter is manufactured in an injection molding process. Alternatively, the second partial adapter can be produced in a 3-D printing process. In particular, the second sub-adapter is free of adhesive spots and / or welds or other connection points, as a result of which the second sub-adapter can be advantageously sealed.

In addition, a wiper blade with at least one wiper blade device is proposed.

Furthermore, the invention is based on a method for assembling a wiper blade device, in particular a wiper blade device according to the invention, with at least one spring rail, in particular with two spring rails, and with at least one on the spring rail (s) Spring rails fastened the wiper blade adapter to a connection with at least one wiper arm, the wiper blade adapter having at least one fluid channel, in particular two fluid channels, for a cleaning fluid.

It is proposed that in a method step at least a first partial adapter of the wiper blade adapter is connected to the spring rail / the spring rails and in a further method step at least a second partial adapter of the wiper blade adapter having the fluid channel (s) is connected to the first partial adapter. This advantageously allows the wiper blade device, in particular the wiper blade adapter, to be assembled in a comfortable, procedurally simple and / or in particular flexible manner.

The wiper blade device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the wiper blade device according to the invention can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here. In addition, within the ranges of values specified in this disclosure, values lying within the stated limits are also to be considered as disclosed and can be used as desired.

Figure list

Further advantages result from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

• 1 einen Teil einer Fahrzeugscheibe und einen an der Fahrzeugscheibe angeordneten Scheibenwischer mit einem Wischblatt mit einer erfindungsgemäßen Wischblattvorrichtung,
• 2 das mit einem Wischarm des Scheibenwischers verbundene Wischblatt mit der erfindungsgemäßen Wischblattvorrichtung,
• 3 einen Teil der Wischblattvorrichtung mit einem an der Federschiene/den Federschienen befestigten ersten Teiladapter eines Wischblattadapters der Wischblattvorrichtung und einem zweiten Teiladapter des Wischblattadapters in einer schematischen Vollschnittdarstellung,
• 4 den zweiten Teiladapter in einer schematischen Vollschnittdarstellung quer zu einer Längserstreckung des zweiten Teiladapters,
• 5 den an der Federschiene/den Federschienen angeordneten ersten Teiladapter in einer perspektivischen Darstellung,
• 6 den Wischblattadapter mit dem ersten Teiladapter und dem zweiten Teiladapter in einem zusammengebauten Zustand und
• 7 eine schematische Darstellung eines erfindungsgemäßen Verfahrens.

Show it:

• 1 a part of a vehicle window and a window wiper arranged on the vehicle window with a wiper blade with a wiper blade device according to the invention,
• 2nd the wiper blade connected to a wiper arm of the windshield wiper with the wiper blade device according to the invention,
• 3rd a part of the wiper blade device with a first partial adapter of a wiper blade adapter of the wiper blade device and a second partial adapter of the wiper blade adapter fastened to the spring rail / the spring rails in a schematic full sectional view,
• 4th the second partial adapter in a schematic full sectional view transverse to a longitudinal extension of the second partial adapter,
• 5 a perspective view of the first partial adapter arranged on the spring rail / the spring rails,
• 6 the wiper blade adapter with the first partial adapter and the second partial adapter in an assembled state and
• 7 a schematic representation of a method according to the invention.

Description of the embodiment

1 shows part of a vehicle window 46 of a vehicle and one on the vehicle window 46 arranged wipers 44 . The windshield wiper 44 has a wiper blade 42 with a wiper blade device according to the invention 10 on.

The wiper blade device 10 is intended for use on a vehicle, in particular a motor vehicle. The windshield wiper 44 is for cleaning the vehicle window 46 intended. The vehicle window 46 is designed as a front and / or rear window.

The windshield wiper 44 has a wiper arm 20 on. The wiper blade device 10 is with the wiper arm 20 connected (cf. 1 and 2nd ). The wiper arm 20 is with a drive shaft 78 a wiper drive of the wiper 44 connected to the vehicle. The drive shaft 78 drives the wiper arm 20 in motion relative to the vehicle window 46 on. The drive shaft 78 drives the wiper blade 42 by means of the wiper arm 20 in a wiping motion relative to the vehicle window 46 on. The wiper arm moves in an operating state 20 during the wiping movement with the wiper arm 20 connected wiper blade 42 on a circular path over the vehicle window 46 . A first end 56 of the wiper blade 42 describes an arcuate path with a first radius during the wiping movement 60 . A second end 58 of the wiper blade 42 describes an arc-shaped path with a second radius during the wiping movement 62 . The first radius 60 is smaller than the second radius 62 (see. 1 ).

The wiper blade device 10 has a fluid dispensing unit 50 on. The fluid dispenser 50 is intended for cleaning the vehicle window 46 a cleaning fluid on the vehicle window 46 output and / or spray (cf. 2nd ). The cleaning fluid is designed as a wiping water. The fluid dispenser 50 comprises at least one fluid discharge opening and / or a nozzle body with at least one nozzle element for cleaning fluid discharge. The Fluid dispensing unit 50 has a plurality of nozzle elements for cleaning fluid dispensing.

The wiper blade device 10 has a wiper blade adapter 14 on. The wiper blade adapter 14 is a connection of the wiper blade 42 with the wiper arm 20 intended. The wiper blade adapter 14 has two fluid connections 76 per one fluid channel 22 of the wiper blade adapter 14 for a fluid connection of the fluid channel 22 with the fluid dispensing unit 50 on (cf. 3rd ).

The wiper blade 42 is intended for cleaning the vehicle window 46 over the vehicle window 46 to wipe. A wiper lip of the wiper blade 42 is intended for cleaning the vehicle window 46 over the vehicle window 46 to wipe. The wiper lip makes direct contact with the vehicle window during the wiping movement 46 . The wiper blade 42 is intended on the vehicle window 46 located dirt and / or by the fluid dispensing unit 50 on the vehicle window 46 dispensed cleaning fluid from the vehicle window 46 to wipe away.

The wiper blade device 10 has a spring rail 12th on. Alternatively, the wiper blade device 10 two spring rails 12th exhibit. Below is just a spring rail 12th described, the description for all spring rails 12th should apply equally.

The spring rail 12th is made of a metal. The wiper blade adapter 14 is on spring rail 12th attached. The wiper blade adapter 14 is on the spring rail by means of an ultrasound process 12th attached.

The wiper blade adapter 14 has a first partial adapter 16 on (cf. 3rd and 5 ). The wiper blade adapter 14 has a second partial adapter 18th on (cf. 3rd , 4th and 6 ).

The first partial adapter 16 is on the spring rail 12th attached. The first partial adapter 16 is on the spring rail by means of an ultrasound process 12th attached. The first partial adapter 16 is integral with the spring rail 12th connected.

The second sub-adapter 18th is on the first partial adapter 16 attached. The second sub-adapter 18th is integral with the first partial adapter 16 connected. The second sub-adapter 18th is on one of the spring rails 12th opposite side of the first partial adapter 16 arranged. The second sub-adapter 18th is indirectly on the spring rail 12th attached. The opposite side of the first partial adapter 16 is designed as a coupling surface. The second sub-adapter 18th points to the coupling surface of the first partial adapter 16 corresponding further coupling surface. When viewed in the direction of assembly 74 of the wiper blade adapter 14 covers the second partial adapter 18th in an assembled state completely the first partial adapter 16 (see. 6 ).

The first partial adapter 16 and the second sub-adapter 18th are cohesively connected. The first partial adapter 16 and the second sub-adapter 18th are inextricably linked. The second sub-adapter 18th is on the first partial adapter by means of an ultrasound process 16 attached. An entire contact area from sides of the first partial adapter facing each other 16 and the second sub-adapter 18th is homogeneously bonded to one another in the assembled state.

The first partial adapter 16 and second sub-adapter 18th are connected to each other without seals. A tightness of the wiper blade 42 is by a positive and / or integral connection between the first part adapter 16 and the second sub-adapter 18th manufactured. The wiper blade adapter 14 is tight against penetration of a fluid from the outside into an inner region of the wiper blade adapter 14 , for example in a fluid channel 22 of the wiper blade adapter 14 , and / or an escape of the cleaning fluid from the wiper blade adapter 14 , for example from a fluid channel 22 of the wiper blade adapter 14 , outward.

The second sub-adapter 18th is made in one piece. The second sub-adapter 18th is manufactured using an injection molding process. Alternatively, the second sub-adapter 18th be produced using a 3-D printing process. The second sub-adapter 18th is free of glue points and / or welds or other connection points.

The second sub-adapter 18th points to the first partial adapter 16 opposite side a closed, sealless surface 40 on. The closed, sealless surface 40 forms an upper side of the second partial adapter 18th .

The wiper blade adapter 14 has two fluid channels 22 for the cleaning fluid. The second sub-adapter 18th has two fluid channels 22 for the cleaning fluid. The two fluid channels 22 are identical to each other. Below is only one fluid channel 22 described, the description for both fluid channels 22 should be valid.

The fluid channel 22 has a first subchannel 24th on. The first sub-channel 24th extends parallel to the spring rail 12th . The fluid channel 22 has a second subchannel 26 on. The second sub-channel 26 extends parallel to the spring rail 12th . The first sub-channel 24th and the second subchannel 26 extend parallel to each other.

The second sub-channel 26 extends along a longitudinal extension 54 of the second sub-adapter 18th . The second sub-channel 26 extends from a first side of the second partial adapter 18th to a second side of the second partial adapter opposite the first side 18th . The first sub-channel 24th extends along the longitudinal extent 54 of the second sub-adapter 18th from the first side of the second partial adapter 18th into an inner area of the second partial adapter 18th .

The first sub-channel 24th has a greater distance from the first partial adapter 16 on than the second subchannel 26 . The first sub-channel 24th is at a first distance 64 from the first partial adapter 16 spaced. The second sub-channel 26 is at a second distance 66 from the first partial adapter 16 spaced. The first distance 64 is larger than the second distance 66 . The first distance 64 and the second distance 66 are each over an entire extension of the first subchannel 24th and the second subchannel 26 constant.

The first sub-channel 24th is as a fluid inlet channel 30th educated. The second sub-channel 26 is as a fluid outlet channel 32 educated. The first sub-channel 24th and the second subchannel 26 are in sections directly one above the other along a cross to the longitudinal extent 54 arranged in the direction.

The fluid channel 22 has a third subchannel 28 on. The third sub-channel 28 extends across the first subchannel 24th and the second subchannel 26 . The third sub-channel 28 fluidically connects the first subchannel 24th with the second subchannel 26 . The third sub-channel 28 connects fluidically in the interior of the second sub-adapter 18th lying end of the first subchannel 24th with the second subchannel 26 . The third sub-channel 28 crosses the second subchannel 26 .

The second sub-adapter 18th has an opening 34 of the fluid channel 22 on. The third sub-channel 28 shows the opening 34 on one of the first partial adapters 16 facing side of the second partial adapter 18th on. The opening 34 is as a mold opening 36 educated. The opening 34 is through the first partial adapter 16 sealed fluid-tight. The opening 34 is permanent due to the first partial adapter 16 locked.

The fluid channel 22 has three fluid openings. A fluid port is as a fluid inlet port 68 of the first subchannel 24th educated. Two fluid openings are called fluid openings 38 of the second subchannel 26 educated. The fluid inlet port 68 is for a fluid connection with the wiper arm 20 intended. Through the fluid inlet opening 68 the cleaning fluid flows into the second partial adapter 18th inside.

The fluid channel 22 has a fourth fluid opening. The fluid opening is as a spray opening 80 educated. The second sub-adapter 18th has two spray openings 80 on. The spray openings 80 are intended to apply the cleaning fluid to the vehicle window 46 , in particular directly, to dispense and / or spray. The spray openings 80 are fluid technology with the fluid channel 22 connected.

Two fluid openings 38 of the second subchannel 26 are for a fluid connection to the fluid dispensing unit 50 intended. The two fluid openings 38 are with respect to a longitudinal direction 48 the spring rail 12th oppositely aligned. Through the two fluid openings 38 in at least one operating state, the cleaning fluid flows out of the second partial adapter 18th towards the fluid dispensing unit 50 out. In the operating state, the cleaning fluid flows into the fluid dispensing unit in opposite directions 50 .

7 shows a schematic representation of a method according to the invention. The method is to assemble the wiper blade device 10 with the spring rail 12th and with that on the spring rail 12th attached wiper blade adapter 14 intended.

The method has one step 70 on. In the procedural step 70 becomes the first sub-adapter 16 on the spring rail 12th along an assembly direction 74 on the spring rail 12th put on. In the procedural step 70 becomes the first sub-adapter 16 with the spring rail 12th cohesively connected. In the procedural step 70 becomes the first sub-adapter 16 with the spring rail 12th welded by means of an ultrasonic welding.

The method has a further step 72 on. In the further process step 72 becomes the second, the fluid channel 22 having partial adapters 18th with the first partial adapter 16 cohesively connected. In the further process step 72 becomes the second sub-adapter 18th on the first partial adapter 16 along the direction of assembly 74 put on. In the further process step 72 becomes the second sub-adapter 18th with the first partial adapter 16 welded by means of ultrasonic welding. By welding the first partial adapter 16 with the second partial adapter 18th becomes the wiper blade adapter 14 sealed fluid-tight.

Claims (13)

Wiper blade device (10) with at least one spring rail (12) and with at least one The wiper blade adapter (14) fastened to the spring rail (12) for connection to at least one wiper arm (20), the wiper blade adapter (14) having at least one fluid channel (22) for a cleaning fluid, characterized in that the wiper blade adapter (14) has one on the Spring rail (12) fastened first partial adapter (16) and a second partial adapter (18) which is fastened to the first partial adapter (16) and has the fluid channel (22). Wiper blade device (10) after Claim 1 , characterized in that the second partial adapter (18) is arranged on a side of the first partial adapter (16) facing away from the spring rail (12). Wiper blade device (10) according to any one of the preceding claims, characterized in that the first partial adapter (16) and the second partial adapter (18) are at least integrally connected to one another. Wiper blade device (10) according to one of the preceding claims, characterized in that the first partial adapter (16) and the second partial adapter (18) are connected to one another without a seal. Wiper blade device (10) according to one of the preceding claims, characterized in that the second partial adapter (18) has at least one opening (34) in the fluid channel (22) which is closed by the first partial adapter (16). Wiper blade device (10) after Claim 5 , characterized in that the opening (34) is a demolding opening (36). Wiper blade device (10) according to one of the preceding claims, characterized in that the fluid channel (22) has at least one first partial channel (24) and at least one second partial channel (26), which have different distances from the first partial adapter (16). Wiper blade device (10) after Claim 7 , characterized in that the first sub-channel (24) designed as a fluid inlet channel (30) is at a greater distance from the first sub-adapter (16) than the second sub-channel (26) designed as a fluid outlet channel (32). Wiper blade device (10) after Claim 7 or 8th , characterized in that at least the second subchannel (26) has at least two fluid openings (38) which are oriented in opposite directions with respect to a longitudinal direction (48) of the spring rail (12). Wiper blade device (10) according to one of the preceding claims, characterized in that the second partial adapter (18) has a closed, sealless surface (40) on a side facing away from the first partial adapter (16). Wiper blade device (10) according to one of the preceding claims, characterized in that the second partial adapter (18) is formed in one piece. Wiper blade (42) with at least one wiper blade device (10) according to one of the preceding claims. Method for assembling a wiper blade device (10), in particular a wiper blade device (10) according to one of the Claims 1 to 11 , with at least one spring rail (12) and with at least one wiper blade adapter (14) attached to the spring rail (12) for connection to at least one wiper arm (20), the wiper blade adapter (14) having at least one fluid channel (22) for a cleaning fluid , characterized in that in a method step (70) at least one first partial adapter (16) of the wiper blade adapter (14) is connected to the spring rail (12) and in a further method step (72) at least one second partial adapter (fluid channel (22)) 18) of the wiper blade adapter (14) is connected to the first partial adapter (16).

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