Scraping blade equipment

Abstract

The invention relates to a wiper blade device comprising at least one wiper strip (14), at least one windshield unit (12) at least partially accommodating the wiper strip (14), at least one spoiler (16), and at least one functional connection (40, 40', 42, 42', 42'', 42''') which is provided for connecting a heating element (18, 18') to an electrical supply line (20) and / or for connecting a wiper liquid channel (22) of the windshield unit (12) to a wiper liquid supply line (24). It is proposed that at least one windshield unit (12) has at least one connecting element (30, 30') connected to the at least one spoiler (16) and provided for direct, detachable coupling to at least one wiper arm adapter (34) which is fixedly, in particular captively, coupled to the wiper arm (32).

Description

Technical Field

[0001] The present invention relates to a scraper blade device. Background Art

[0002] A wiper blade device has been proposed, comprising at least one wiper strip, at least one windshield unit at least partially accommodating the wiper strip, at least one spoiler and at least one functional connection, which is provided for connecting a heating element to an electrical supply line and / or for connecting a wiper liquid channel of the windshield unit to a wiper liquid supply line. Summary of the Invention

[0003] The invention relates to a wiper blade device comprising at least one wiper strip and at least one windshield unit at least partially accommodating the wiper strip, the at least one windshield unit having at least one spoiler and at least one functional connection, which is provided for connecting a heating element to an electrical supply line and / or for connecting a wiper liquid channel of the windshield unit to a wiper liquid supply line.

[0004] It is proposed that at least one windshield unit has at least one connecting element connected to at least one spoiler, the connecting element being configured for direct, releasable coupling to at least one wiper arm adapter that is fixedly, in particular captively, coupled to the wiper arm. Preferably, the wiper blade device does not have a wiper blade adapter. In particular, a direct, releasable coupling of the wiper arm adapter to the windshield unit is provided.

[0005] In this context, the term "wiper blade device" should be understood to mean, in particular, at least a portion, in particular a subassembly, of a wiper blade, in particular a glass wiper blade, and advantageously a vehicle windshield wiper blade. In particular, the wiper blade device can also include the entire wiper blade, in particular the entire glass wiper blade, and advantageously the entire vehicle windshield wiper blade. It is conceivable that the wiper blade device is designed as at least a portion of a flat-beam wiper blade and / or as at least a portion of a flat-beam scraper and / or as a flat-beam scraper. Preferably, the wiper blade device is designed for use on a vehicle. Preferably, the wiper blade device is designed for cleaning surfaces, in particular, windshields on a vehicle. The wiper blade device is coupled to a vehicle, in particular a wiper arm of a vehicle, in particular, for cleaning vehicle windshields. "Provided" should be understood to mean, in particular, specifically configured, specially designed, and / or specially equipped. An object provided for a specific function should be understood to mean, in particular, that the object fulfills and / or performs a specific function in at least one application and / or operating state. In this context, an “operating state” is to be understood as meaning in particular a state in which the wiper blade device is ready for a wiping process and / or wiping operation and / or is in a wiping operation in which the wiper strip is guided in particular on the vehicle windshield and thereby advantageously rests against the vehicle windshield.

[0006] A "wiper arm" should be understood to mean, in particular, a unit of a windshield wiper that is designed to be moved on a vehicle windshield, in particular by means of a wiper arm adapter, a wiper blade device fastened to the wiper arm, and in particular a wiper blade of the wiper blade device, for cleaning the vehicle windshield. Preferably, the wiper arm is arranged on at least one drive shaft of a wiper drive of a vehicle windshield wiper. The wiper arm can be driven, in particular, by the wiper drive for movement relative to the vehicle windshield.

[0007] In this context, a "wiper arm adapter" is to be understood in particular as an adapter which has a contact region with respect to the wiper arm component and is captively connected to the wiper arm component and is provided for providing a coupling region of the wiper arm component for coupling and / or contact with a component, in particular a windshield unit, on the surface to be cleaned, in particular a vehicle window. The wiper blade device is preferably configured to be coupled to the vehicle, in particular to the wiper arm of the vehicle, by means of the wiper arm adapter and the windshield unit.

[0008] A "scraping strip" should be understood in particular to mean a unit consisting of at least one elastic material (as a scraping base) and a scraping lip, which is configured to move in a contact manner over the surface to be cleaned, in particular a glass surface, preferably a vehicle window, in order to clean it. Preferably, the scraping strip is made of a natural or artificial elastomer, in particular a synthetic material and / or rubber. It is conceivable that the scraping base and the scraping lip are integrally formed. In this context, a "scraping lip" should be understood in particular to mean an elastic lip configured to scrape, scrape, and / or clean glass, in particular a vehicle window, with a scraping edge. "Integrally" should be understood in particular to mean at least a materially bonded connection, such as achieved by welding, gluing, injection molding, and / or other processes that appear appropriate to a person skilled in the art, and / or advantageously to mean formed into a single piece, such as by casting and / or by single- or multi-component injection molding or extrusion, such as co-extrusion, and advantageously by manufacturing from a single blank. Preferably, the term "integral" should be understood as meaning, in particular, a single-piece structure, particularly preferably manufactured in a forming process. Preferably, the scraper base of the scraper strip is configured to accommodate a spring rail for stabilization. The scraper strip can in particular at least partially and preferably completely form at least one spring rail receptacle. In this context, "elasticity" should in particular be understood as meaning that an object can be repeatedly deformed without mechanically damaging or destroying it, and in particular automatically returns to its basic shape after deformation. In order to accommodate the spring rail, the scraper strip can in particular at least partially and preferably completely form a spring rail receptacle. In this context, "spring rail receptacle" should in particular be understood as a channel or groove, which is configured to at least partially accommodate the spring rail. Preferably, the spring rail receptacle is configured to clearly surround the spring rail at least in the main part of the main extension direction. Preferably, the scraper strip is configured as two spring rail receptacles configured as lateral receptacles, which are configured to partially accommodate at least one spring rail respectively. Alternatively or additionally, the scraper strip can be configured as at least one spring rail receptacle configured as a spring rail channel, which is configured to completely accommodate at least one spring rail. The at least one scraper strip is designed to be connectable to the at least one spring rail via the at least one spring rail receptacle. The dimensions of the at least one spring rail receptacle are adapted to the shape and size of the at least one spring rail. Advantageously, the scraper strip is connected to the spring rail in a form-fitting, in particular friction-locking, manner.

[0009] A "spring rail" is to be understood, in particular, as a macroscopic element having at least one extension that can elastically change by at least 10%, in particular by at least 20%, preferably by at least 40%, and particularly advantageously by at least 50% in a normal operating state and / or in an installed state, and that generates a reaction force that resists the change, which is related to and preferably proportional to the change in the extension. In this context, an "installed state" is to be understood, in particular, as a state in which the wiper blade device is ready for a wiping process and / or wiping operation. In particular, in the installed state, the wiper blade device is arranged on and / or coupled to the wiper arm, wherein, in particular, a mechanical, electrical, and / or fluidic coupling exists between the wiper arm and the wiper blade device. Preferably, at least one spring rail is constructed at least partially of metal. Alternatively or additionally, it is conceivable that the spring rail is constructed at least partially of a synthetic material, a composite material, or other material that appears appropriate to a person skilled in the art. Preferably, the spring rail is constructed at least partially of spring steel. Preferably, in the unloaded state, the spring rail has at least substantially the shape of a curved rod, and particularly advantageously a flattened curved rod. The spring rail can be constructed in one piece or in multiple pieces. Preferably, the curvature of the spring rail in the unloaded state is greater than the curvature of a vehicle window surface, in particular a vehicle window, on which the spring rail is guided in at least one operating state and / or installed state.

[0010] A "windshield unit" should be understood in particular to mean a unit that is designed to block air flows or driving wind acting on the wiper blade device and / or to press the wiper blade against the surface to be wiped, in particular, a vehicle window. The windshield unit is designed in particular to be distinct from the spring rail, wiper strip, wiper arm adapter, and / or spring rail. Preferably, the windshield unit is constructed at least partially of a synthetic material. Advantageously, in the operating state and / or installed state, the windshield unit extends over at least a portion, preferably at least a majority, of the extension of the wiper blade device along the main extension direction of the spring rail, in particular, the wiper blade. In particular, the spoiler of the windshield unit is designed to block driving wind and has at least one concave flow-through surface. Preferably, the spoiler of the windshield unit extends over at least a majority of the extension of the windshield unit. The "main extension direction" of an object should be understood as a direction parallel to the longest edge length of the smallest cuboid that completely encloses the object. The majority of the extension should preferably be understood as at least 70%, preferably at least 80%, of the extension.

[0011] A "connecting element" should be understood in particular as an element that is provided for connecting one object to at least one other object. Preferably, at least one, in particular exactly one, connecting element directly and releasably connects the wiper blade device, in particular the windshield unit, to the wiper arm adapter. Preferably, the connecting element is latched onto and / or in the other object for connection to the other object. Preferably, the connecting element is provided for a direct, releasable latching connection between the wiper blade device, in particular the windshield unit, and the wiper arm adapter. Preferably, the connecting element is formed by a latching device. In this context, a "latching device" should be understood in particular as a spring-elastic device for establishing a latching connection, which is provided for elastic deflection during installation. Preferably, at least one connecting element is designed to be connected to at least one spoiler of the windshield unit.

[0012] Preferably, the wiper blade device is configured to discharge a wiping liquid, in particular, along at least one wiping direction. In this context, "wiping liquid" is understood to mean, in particular, a liquid suitable for washing and / or cleaning vehicle windows, such as, in particular, water, alcohol, or a mixture comprising a water portion, an antifreeze portion, and / or an alcohol portion. A "wiping direction" is advantageously understood to mean the direction in which, in at least one operating state and / or installed state, the wiper blade moves over a surface, in particular a window, in particular a vehicle window. The wiping direction extends, in particular, perpendicular to the longitudinal extension of the wiper strip and parallel to the vehicle window to be wiped. An upward / downward orientation of the wiping direction is understood to mean, in particular, that the wiping direction has at least one movement component that is oriented upward / downward relative to the vehicle.

[0013] A "wiping liquid channel" should be understood in particular as a channel-like recess in at least one windshield unit, wherein the channel-like recess is provided for guiding a fluid, in particular a scraping liquid. A "channel-like recess" should be understood in particular as a material-limited recess which, in at least one operating state and / or installed state, is provided for the passage of a fluid, in particular a scraping liquid. The expression "through which a scraping liquid channel is provided in at least one operating state and / or installed state" should be understood in particular as meaning that the scraping liquid channel is provided in the operating state and / or installed state for transporting a fluid arriving at the end of the scraping liquid channel from one end of the scraping liquid channel to the end of the scraping liquid channel opposite to one end of the channel, wherein the fluid flows in particular through the scraping liquid channel. Preferably, the scraping liquid channel has an at least substantially circular cross-section. Alternatively, it is conceivable that the scraping liquid channel has a polygonal, in particular at least substantially rectangular, cross-section, an elliptical cross-section or other cross-section that appears meaningful to a person skilled in the art. Preferably, the scraping liquid channel is delimited by the windshield unit. Alternatively, it is conceivable that the wiping liquid channel is constructed, for example, by a one-piece or multi-piece elastic hose and / or a one-piece or multi-piece tube in a recess in the windshield unit. Also conceivable are other constructions of the wiping liquid channel that appear meaningful to a person skilled in the art, such as a coupled arrangement of hollow spaces of different types of components of the windshield unit. It is conceivable that the windshield unit has at least two, in particular exactly two, wiping liquid channels. At least one wiping liquid channel has at least one output element. An "output element" is to be understood as an element that is provided for fluid output. The output element can be constructed in the form of a nozzle and / or an opening. By means of the output element, the wiper blade device can fulfill at least one advantageous wiping liquid flushing function.

[0014] A "wiping liquid supply line" should be understood in particular to mean an element, such as a hose or a tube, having a channel-like recess, wherein the channel-like recess is configured to guide a fluid, in particular a wiper liquid. The wiper liquid supply line preferably extends from the vehicle to the wiper arm adapter over at least a substantial portion of the main extension of the wiper arm. The wiper liquid supply line is configured to couple with a wiper liquid channel. The wiper liquid supply line is configured to guide at least part of the wiper liquid from the wiper liquid reservoir to / into the wiper blade device. The wiper liquid supply line preferably has an at least substantially circular cross-section. Alternatively, it is conceivable that the wiper liquid supply line has a polygonal, in particular at least substantially rectangular, elliptical, or other cross-section that appears meaningful to a person skilled in the art. Preferably, at least one wiper liquid supply line is arranged at least substantially parallel to the wiper arm. "At least substantially parallel" should be understood here in particular to mean an orientation of a direction relative to a reference direction, in particular within a plane, wherein the direction has a deviation relative to the reference direction of, in particular, less than 8°, advantageously less than 5°, and particularly advantageously less than 2°.

[0015] A "heating element" should preferably be understood as an element that converts supplied energy, particularly electrical energy, into heat and is configured to dissipate the heat to its surroundings. The heating element is preferably arranged on the side of the at least one windshield unit opposite the spoiler. Preferably, the heating element is configured to control the temperature of the windshield unit and / or the spring rail and / or the wiper strip. Preferably, the at least one heating element extends over a substantial portion of the at least one windshield unit, particularly over the entire main extension. Preferably, the at least one heating element is arranged on the side of the windshield unit facing the wiper strip. Preferably, the at least one heating element is arranged so that its main extension is at least substantially parallel to the plane of the main extension of the at least one spring rail. A "main extension plane" should be understood as a plane extending parallel to the largest outer surface of a smallest cuboid that completely encloses an object. Preferably, the at least one heating element extends along the main extension of the windshield unit in a serpentine, sawtooth, or meandering pattern. Preferably, the at least one heating element has an outer contour that is at least substantially rectangular in a cross-section perpendicular to its main extension. Preferably, the at least one heating element is configured as a heating resistor. The at least one heating element is formed, for example, by a heating wire and / or a heating film and / or a particularly conductive heating ceramic and / or a particularly conductive heating paste. Preferably, the wiper blade device has at least two, preferably exactly two, heating elements.

[0016] Advantageously, the heating element is provided for performing temperature control of the at least one wiper lip to at least a temperature at which the wiping process can be performed, in particular at which the flexibility of the wiper lip rubber for the wiping process is ensured, in particular optimized. This makes it possible to accelerate and / or improve the cleaning of the vehicle windshield, in particular at outside temperatures below 0°C and / or below the freezing point of water. Due to the heating element, the wiper blade device can fulfill at least one advantageous heating function.

[0017] The electrical supply line preferably extends from the vehicle to the wiper arm adapter over at least a major portion of the main extension of the wiper arm. The electrical supply line is configured to couple to at least one heating element. The electrical supply line is configured to conduct current at least partially from a current generator, in particular a battery, a generator (e.g., a lighting generator (Lichtmaschine) and / or a DC generator (Dynamo)) to / into the wiper blade device. Preferably, at least one electrical supply line is arranged at least substantially parallel to the wiper arm. Preferably, at least two, in particular exactly two, electrical supply lines are arranged on the wiper arm.

[0018] A "functional connection" is preferably understood to mean an element that is intended to establish an electrically conductive connection between two electrical conductors and / or a water-conducting connection between two water-conducting elements. Preferably, at least one functional connection is designed for plug-type connection to at least one adapter connection of a wiper arm adapter. Preferably, in the installed state, at least one functional connection and at least one adapter connection form a penetration within the plug-type connection, which establishes an electrically conductive connection between the heating element and the electrical supply line and / or a water-conducting connection between the wiper liquid supply line and at least one wiper liquid channel.

[0019] The design of the wiper blade device according to the invention makes it possible, in particular, to provide an advantageously couplable wiper blade device. In particular, a wiper blade device can be realized that can be directly connected to a wiper arm adapter without a wiper blade adapter. In particular, the design of the wiper blade device according to the invention makes it possible to make the wiper blade adapter obsolete. Thus, in particular, an advantageously easy installation of the wiper blade device can be achieved by eliminating an additional wiper blade adapter. Advantageously, the number of components can be kept small. Thus, in particular, an advantageously compact and light wiper blade device can be provided. Thus, an advantageous coupling geometry can be achieved. Thus, an advantageously space-saving support and / or an advantageously space-saving transport of the wiper blade device can be achieved. Thus, an advantageous transport handling of the wiper blade device can also be achieved. Furthermore, it is advantageously possible to automatically establish a mechanical connection between the wiper blade device and the wiper arm, or to simultaneously establish a fluidic and / or electrical connection between the wiper arm and the wiper blade device.

[0020] Furthermore, it is proposed that at least one connecting element is formed integrally with at least one spoiler. This advantageously allows for a stable connecting element. This advantageously allows for a long service life of the connecting element. This makes it possible, in particular, to fasten the connecting element to the wiper arm adapter near the wiper arm.

[0021] It is further proposed that at least one windshield unit comprises at least two windshield subunits, each of which comprises at least one spoiler subelement of a spoiler, at least one functional connection, and at least one connecting element. The at least two windshield subunits are preferably designed to function similarly. The at least two windshield subunits are preferably designed to be identical in size. The at least two windshield subunits preferably have a substantially identical main extension and a substantially identical secondary extension. The at least two windshield subunits are preferably designed to be mirror images of one another, in particular on a mirrored surface, with the mirrored surface extending parallel to or perpendicular to the main extension plane of the windshield unit. Preferably, each of the at least two windshield subunits extends over at least 20%, preferably at least 40%, of the main extension of the wiper blade device. Preferably, each of the at least two windshield subunits extends over at least 20%, preferably at least 40% of the main extension of the windshield unit. Preferably, the at least one spoiler of the windshield unit, in particular in the installed state, is formed by the at least two mirrored spoiler subelements of the windshield subunit, in particular on a mirrored surface, with the mirrored surface extending parallel to or perpendicular to the main extension plane of the windshield unit.

[0022] Preferably, at least two connecting elements of the windshield unit are arranged in a mirror-like manner to one another, in particular on a mirror surface, in particular in the mounted state, the mirror surface extending parallel to a secondary extension plane extending perpendicularly to the main extension of the windshield unit. Preferably, at least two connecting elements are constructed similarly to one another, in particular of the same size. Preferably, at least two functional joints of the windshield unit are arranged in a mirror-like manner to one another, in particular on a mirror surface, in particular in the mounted state, the mirror surface extending parallel to a secondary extension plane extending perpendicularly to the main extension of the windshield unit. Preferably, at least two functional joints are constructed similarly to one another, in particular of the same size and / or identical in their functional manner. An advantageous, in particular continuous coupling process with the wiper arm adapter can be achieved by means of the two-piece construction, by means of the windshield unit. In particular, an advantageous accessibility of the connecting elements on each windshield subunit can be achieved by means of the two-piece construction.

[0023] Furthermore, it is proposed that at least two windshield subunits each have a coupling region in the end region of their main extension, in which at least one functional connection of each windshield subunit is arranged, and the coupling region is configured to directly and releasably couple to the coupling region of the wiper arm adapter. The coupling region is preferably a region of the windshield subunit that, in the installed state, makes contact with at least one wiper arm adapter. The coupling region of each of the at least two windshield subunits is preferably designed to be free of the corresponding spoiler subelement of each windshield subunit, in particular the concave outer surface of the corresponding spoiler subelement. Preferably, the at least two coupling regions are similar to each other, in particular of the same size, and / or are designed to have the same functional mode and / or number of functional connections located in the coupling region. Preferably, the at least two coupling regions are designed and / or arranged, in particular in the installed state, to be mirror images of each other, in particular on a mirror surface, which extends parallel to a secondary extension plane extending perpendicularly to the main extension of the windshield unit. Advantageously, a common mounting region comprising at least two coupling regions can be achieved, in particular, by sliding the wind shield subunits together along spring rails in opposite directions parallel to the main extension direction of the wind shield subunits.

[0024] Furthermore, it is proposed that the connecting elements of at least two windshield subunits each partially extend from the corresponding spoiler subunit along the main extension direction of the spoiler subunit into the corresponding coupling regions of the at least two windshield subunits. Preferably, the connecting element is configured to establish a load-bearing connection between the wiper arm adapter and the wiper blade device. A "load-bearing connection" should preferably be understood as a connection that generates at least 50%, preferably at least 70%, of the holding force between the two connected objects. Preferably, the connecting element extends along the main extension direction of the spoiler by a maximum of 3 cm, preferably a maximum of 1 cm, and particularly preferably a maximum of 0.5 cm into the coupling region of the corresponding windshield subunit. Preferably, at least two connecting elements extend equally far into the corresponding coupling region of each windshield subunit. This allows for advantageous stability in the connection between the windshield unit and the wiper arm adapter.

[0025] Furthermore, it is proposed that the wiper blade device has at least one heating element arranged on the windshield unit and extending along at least one of the at least two windshield subunits on a side opposite the at least one spoiler subelement of at least one windshield subunit. This advantageously allows the wiper lip of the wiper blade device to be heated, in particular, to a temperature that is advantageous for the wiping process.

[0026] Furthermore, it is proposed that at least one windshield unit has at least one groove extending along the main extension direction of the windshield unit on a side facing away from the at least one spoiler sub-element, wherein a heating element is arranged in the groove. At least two windshield sub-units each have at least one groove, wherein at least one groove is arranged on the side of the windshield sub-unit opposite the at least one spoiler sub-element of each of the at least two windshield sub-units. Preferably, at least one groove is configured to accommodate at least one spring rail and / or a scraper strip. Preferably, the groove has a portion configured to at least partially accommodate the at least one scraper strip. The portion of the groove configured to accommodate the heating element is configured to partially accommodate the at least one scraper strip. Preferably, the respective groove is materially bounded at least partially by the respective windshield sub-unit along the main extension direction. Preferably, each groove has at least one side that is not bounded by the windshield sub-unit. Preferably, in the installed state, the windshield sub-unit partially surrounds the spring rail along the main extension of the at least one spring rail.

[0027] This allows for an advantageous arrangement of the spring rail, the wiper strip and the windshield unit, thereby ensuring an advantageously safe functionality of the wiper blade device.

[0028] Furthermore, it is proposed that at least two windshield subunits each have at least one wiping liquid channel, which is at least partially, in particular completely, arranged within the spoiler subelement of each of the at least two windshield subunits. Preferably, the at least one wiping liquid channel of each windshield subunit extends over the entire main extension of the spoiler of each windshield subunit. This allows for an advantageous distribution of the wiping liquid on the windshield to be wiped. In particular, a more targeted distribution of the wiping liquid can be achieved. In particular, a wiping blade device that conserves wiping liquid can be constructed.

[0029] It is further proposed that at least two windshield subunits each have at least one first functional connection and at least one second functional connection, which connect the heating element to the electrical supply line and / or connect the wiping liquid channel to the wiping liquid supply line. Preferably, each windshield subunit includes at least one, preferably at least two, in particular exactly two first functional connections, which are provided for connecting the heating element to the electrical supply line. Preferably, each windshield subunit includes at least one, in particular exactly one second functional connection, which is provided for connecting the wiping liquid channel to the wiping liquid supply line. Preferably, each of the at least two windshield subunits includes at least three, in particular exactly three functional connections. The at least three functional connections are preferably arranged in the coupling region of the respective windshield subunit. Advantageously, a wiping process that is temperature-controlled and supported by the wiping liquid can thereby be achieved. Advantageously, the coupling of the wiper blade device to the wiper arm can be achieved without a wiper blade adapter, the coupling allowing temperature control and support of the wiping process by the wiping liquid.

[0030] Furthermore, a wiper system is proposed, comprising a wiper arm, a wiper blade device and a wiper arm adapter, the wiper arm adapter being fixedly, in particular captively connected to the wiper arm and being designed for detachable connection to the wiper blade device, and the wiper arm adapter having at least one adapter functional connection for coupling to at least one functional connection of at least one windshield unit. Preferably, the wiper arm guides at least one wiper liquid supply line over at least a large part of its main extension. Preferably, the wiper arm guides at least one, in particular at least two, electrical supply lines over at least a large part of its main extension. Preferably, the wiper arm adapter has at least one, preferably at least two, in particular exactly two, recesses, which are designed to accommodate at least one connecting element of a corresponding windshield subunit. Preferably, the wiper arm adapter has at least two, preferably at least four, in particular exactly four first adapter functional connections for connecting an electrical supply line to at least one, preferably at least two, first functional connections of the windshield subunit, the first functional connections being in particular connected to at least one heating element. Preferably, the wiper arm adapter has at least two, in particular exactly two, second adapter functional connections for connecting the wiper liquid supply line to at least one second functional connection of the windshield subunit, wherein the second functional connection is in particular fluidically connected to at least one wiper liquid channel of the respective windshield subunit. Advantageously, this allows for an uncomplicated electrical and fluidic coupling of the wiper arm adapter to the wiper blade device.

[0031] Furthermore, a method for installing a wiper system is proposed. In at least one method step, at least one spring rail is connected to at least one wiper strip via a spring rail receptacle. In at least one method step, the windshield subunit is completely inserted onto the at least one spring rail from different, in particular opposite, end regions of the main extension of the spring rail. In at least one method step, the wiper arm adapter is inserted with its functional connection onto the functional connection in the coupling region of the windshield subunit until the connecting element of the corresponding windshield subunit snaps into and / or into the recess of the wiper arm adapter. Preferably, in at least one method step, the functional connection is fluidically and / or electrically conductively connected. This allows for an advantageously simple and short installation process with a small number of components.

[0032] The wiper blade device according to the invention is not limited to the above-described applications and embodiments. In particular, the wiper blade device according to the invention can have a number of individual elements, components and units that differs from the number mentioned therein in order to fulfill the function described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Further advantages are obtained from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous combined features. A person skilled in the art will also consider these features individually and combine them into meaningful further combinations.

[0034] in:

[0035] Figure 1 A schematic diagram shows a wiper system having a wiper blade device according to the invention, a wiper arm and a wiper arm adapter;

[0036] Figure 2 A schematic exploded view shows a wiper blade device, a wiper arm and a wiper arm adapter according to the invention;

[0037] Figure 3 A schematic diagram shows a wiper arm and a wiper arm adapter of a wiper system;

[0038] Figure 4 A schematic diagram shows a windshield unit of a wiper blade device according to the present invention;

[0039] Figure 5 A schematic diagram shows a wiper arm and a wiper arm adapter of a wiper system;

[0040] Figure 6 A schematic diagram shows a windshield subunit of a windshield unit of a wiper blade device according to the present invention;

[0041] Figure 7 shows a schematic transparent illustration of a windscreen subunit and a heating element of a wiper blade device according to the invention;

[0042] Figure 8 A method for installing a wiper system is shown schematically. DETAILED DESCRIPTION

[0043] Figure 1The scraper blade device 10 is shown. The scraper blade device 10 is formed by a scraper blade. The scraper blade device 10 is configured to be coupled to a scraper arm. The scraper blade device 10 includes at least one scraper strip 14. The scraper strip 14 includes at least one scraper base and a scraper lip. The scraper base and the scraper lip are connected, in particular, are constructed in one piece. The scraper blade device 10 includes at least one spring rail 46, 46'. The scraper blade device 10 includes two spring rails 46, 46'. The scraper base of the scraper strip 14 forms two spring rail receptacles. The spring rail receptacles are each formed by an external groove 44. The spring rail receptacles are configured to accommodate the two spring rails 46, 46'. The scraper blade device 10 has a windshield unit 12 that at least partially accommodates the scraper strip 14. The windshield unit 12 is arranged on the side of the scraper base facing away from the scraper lip. The windshield unit 12 has at least one spoiler 16. The windshield unit 12 also has a fastening region for fastening the windshield unit 12 to the spring rails 46, 46'. The windshield unit 12 has at least one connecting element 30, 30' connected to the spoiler 16. The windshield unit 12 has two connecting elements 30, 30'. The two connecting elements 30, 30' are designed to be integral with the spoiler 16. The connecting elements 30, 30' are provided for direct, releasable coupling to at least one wiper arm adapter 34, which is fixedly, in particular captively, coupled to the wiper arm 32.

[0044] The windshield unit 12 includes at least two windshield subunits 26, 26'. The windshield subunits 26, 26' each have at least one spoiler subelement 28, 28' of the spoiler 16. The spoiler subelement 28, 28' of the respective windshield subunit 26, 26' is arranged on the side facing away from the spring rails 46, 46'. The spoiler subelement 28, 28' has a concave outer surface.

[0045] The at least two windshield subunits 26, 26' each have at least one scraping liquid channel 22. The scraping liquid channel 22 is at least partially, in particular completely, arranged inside the spoiler subelement 28, 28' of each windshield subunit of the at least two windshield subunits 26, 26' (see Figure 7 ).

[0046] At least two windshield subunits 26, 26' each have at least one groove 44 extending in the main extension direction of the windshield unit 12 on the side facing away from the at least one spoiler subelement 28, 28'. The wiper blade device 10 includes at least one heating element 18, 18' arranged on the windshield unit 12. The heating element 18, 18' is arranged in the groove 44. The heating element 18, 18' extends along at least one of the windshield subunits 26, 26' on the side opposite the spoiler subelement 28, 28'. The at least one heating element 18, 18' extends along a serpentine line at least along the main extension of the windshield subunit 26, 26'.

[0047] The windshield subunits 26, 26' each have at least one connecting element 30, 30'. The connecting element 30, 30' of each windshield subunit 26, 26' is configured as a projection on each spoiler subunit 28, 28' along the main extension direction of the spoiler subunit 28, 28'. The connecting element 30, 30' of the windshield subunit 26, 26' partially protrudes from the corresponding windshield subunit 26, 26' and is partially arranged in the wiper arm adapter 34 in the installed state (see Figure 5 and Figure 6 ).

[0048] Furthermore, the windshield unit 12 has at least one functional connection 40, 40', 42, 42', 42", 42''. The windshield unit 12 has a plurality of functional connections 40, 40', 42, 42', 42", 42''. The windshield unit 12 has, by way of example, exactly six functional connections 40, 40', 42, 42', 42", 42''. The functional connections 40, 40', 42, 42', 42", 42'' of the windshield unit 12 are provided for connecting the heating elements 18, 18' to the electrical supply line 20 and / or for connecting the wiping liquid channel 22 of the windshield unit 12 to the wiping liquid supply line 24 (see Figure 7 A plurality of first functional connections 42, 42', 42", 42'' of the functional connections 40, 40', 42, 42', 42'', 42''' are provided for connecting the heating elements 18, 18' to the electrical supply line 20. A plurality of second functional connections 40, 40' of the functional connections 40, 40', 42, 42', 42'', 42''' are provided for connecting the wiper liquid channels 22, 22' of the windshield unit 12 to the wiper liquid supply line 24.

[0049] The windshield subunits 26 , 26 ′ each have at least one functional connection 40 , 40 ′, 42 , 42 ′, 42 ″, 42 ′″ and at least one connecting element 30 , 30 ′.

[0050] At least two windshield subunits 26, 26' each have at least one first functional connection 42, 42', 42", 42'" and at least one second functional connection 40, 40', which connect the heating elements 18, 18' to the electrical supply line 20 and / or connect the wiping liquid channel 22 to the wiping liquid supply line 24. The windshield subunits 26, 26' each have two first functional connections 42, 42', 42", 42'" respectively. The windshield subunits 26, 26' each have two first functional connections 42, 42', 42", 42'" respectively, which connect the heating elements 18, 18' to the electrical supply line 20. The first functional connections 42, 42', 42", 42'" are essentially cuboid in shape. The first functional connections 42, 42', 42", 42'" are arranged side by side, in particular in a row, parallel to the wiping directions 48, 48'. The first functional connections 42, 42', 42", 42'" are each formed by an electrical plug connector. The first functional connections 42, 42', 42", 42'" of the windshield subunits 26, 26' partially protrude from the respective windshield subunits 26, 26' and are partially arranged in the wiper arm adapter 34 in the installed state (see Figure 5 and Figure 6 ).

[0051] The windshield subunits 26, 26' each have a second functional connection 40, 40', which connects one of the scraping liquid channels 22 to the scraping liquid supply line 24. The second functional connection 40, 40' is essentially designed as a combination of a cylinder 58, 58' and a cuboid base 56, 56'. The second functional connection 40, 40' of the windshield subunits 26, 26' partially protrudes from the respective windshield subunit 26, 26', in particular further than the first functional connection 42, 42', 42", 42''', and is partially arranged in the scraper arm adapter 34 in the installed state (see Figure 5 and Figure 6 The bases 56, 56' protrude further from the respective windshield subunit 26, 26' than the first functional connections 42, 42', 42", 42'". The second functional connections 40, 40' are each formed by a hose coupling, in particular a plug coupling. The functional connections 40, 40', 42, 42', 42", 42'" protrude from the respective windshield subunit 26, 26' in the same direction.

[0052] At least two windshield subunits 26, 26' respectively have a coupling region 36, 36' in the end region of their main extension. At least one functional connection 40, 40', 42, 42', 42'', 42''' of each windshield subunit 26, 26' is arranged. The coupling region 36, 36' is provided for direct and releasable coupling with the coupling region 38 of the wiper arm adapter 34. The connecting elements 30, 30' of the at least two windshield subunits 26, 26' respectively partially extend from the corresponding spoiler element 28, 28' along the main extension direction of the spoiler element 28, 28' to the corresponding coupling region 36, 36' of the at least two windshield subunits 26, 26'. As Figure 4 As shown, in the mounted state, the coupling regions 36 , 36 ′ form a common mounting region for coupling to the wiper arm adapter 34 .

[0053] The wiper system 50 having the wiper arm 32 and the wiper blade device 10 is Figure 1 and 2 The wiper system 50 has a scraping liquid supply line 24 and two electrical supply lines 20. The scraper arm 32 guides the scraping liquid supply line 24 over a large part of its main extension. The scraper arm 32 guides at least two electrical supply lines 20 over at least a large part of its main extension.

[0054] The wiper system 50 comprises a wiper arm adapter 34, which is fixedly, in particular captively, connected to the wiper arm 32. The wiper arm adapter 34 is provided for detachable connection to the wiper blade device 10. The wiper arm adapter 34 has recesses 64, 64' which, when the wiper blade device 10 is mounted on the wiper arm 32, are provided for accommodating the connecting elements 30, 30' ( Figure 3 and Figure 5 The recesses 64 , 64 ′ are each formed by a latching recess into which the connecting elements 30 , 30 ′ can be latched to establish a form-fitting connection. The connecting elements 30 , 30 ′ serve to fix the wiper blade device 10 to the wiper arm adapter 34 .

[0055] The wiper arm adapter 34 has at least one functional adapter connection 52, 52', 54, 54', 54", 54'" for coupling to at least one functional connection 40, 40', 42, 42', 42", 42'" of at least one windshield unit 12. The wiper arm adapter 34 has a number of functional adapter connections 52, 52', 54, 54', 54", 54'" that corresponds to the number of functional connections 40, 40', 42, 42', 42", 42'" of the windshield unit 12. The wiper arm adapter 34 has four first functional adapter connections 54, 54', 54", 54'" for connecting the electrical supply line 20 to two first functional connections 42, 42', 42", 42'" of the windshield subunit 26, 26', the first functional connections being connected in particular to at least one heating element 18, 18'. The first adapter functional connections 54, 54', 54", 54'" are identically designed. The first adapter functional connections 54, 54', 54", 54'" are designed as recesses in the wiper arm adapter 34 with input ends having a rectangular outer contour. The input ends of the first adapter functional connections 54, 54', 54", 54'" are designed to receive the first functional connections 42, 42', 42", 42'" in a form-fitting manner.

[0056] The wiper arm adapter 34 has two second adapter functional connectors 52, 52' for connecting the wiper liquid supply line 24 to a respective second functional connector 40, 40' of the windshield subunit 26, 26', the second functional connector being connected, in particular, fluidically to at least one wiper liquid channel 22, 22' of the corresponding windshield subunit 26, 26'. The second adapter functional connectors 52, 52' are identically configured. The second adapter functional connectors 52, 52' are partially configured as recesses in the wiper arm adapter 34 with input ends having a circular outer contour. The input ends of the second adapter functional connectors 52, 52' are configured to receive the second functional connectors 40, 40' in a form-fitting manner. In addition, the wiper arm adapter 34 has cuboid-shaped base recesses 66, 66' for partially receiving the bases 56, 56' of the second functional connectors 40, 40' of the windshield subunit 26, 26' in a form-fitting manner. The base recesses 66 , 66 ′ are arranged laterally in the coupling region 38 of the wiper arm adapter 34 in two corners on opposite sides along the main extension of the wiper arm adapter 34 .

[0057] The method for installing the scraper system 50 is Figure 8. In at least one method step, in particular the displacement step 60, the spring rail 46 is connected to the wiper strip 14 via the spring rail receptacle, in particular the groove 44. In at least one method arrangement, in particular the displacement step 60, the windshield subunit 26, 26' is completely displaced and / or inserted onto the at least one spring rail 46 from different, in particular opposite, end regions of the main extension of the spring rail 46. In at least one method step, in particular the fastening step 62, the wiper arm adapter 34 is inserted with its adapter functional connections 52, 52', 54, 54', 54", 54''' onto the functional connections 40, 40', 42, 42', 42'', 42''' in the coupling region 36, 36' of the windshield subunit 26, 26' until the connecting element 30, 30' of the respective windshield subunit 26, 26' engages with and / or in the recess 64, 64' of the wiper arm adapter 34. Preferably, in at least one method step, in particular the fastening step 62 , the functional connection 40 , 40 ′, 42 , 42 ′, 42 ″, 42 ′″ is fluidically and / or electrically conductively connected to the adapter functional connection 52 , 52 ′, 54 , 54 ′, 54 ″, 54 ′″.

Claims

1. A wiper blade device comprising at least one wiper strip (14) and at least one windshield unit (12) at least partially accommodating the wiper strip (14), the windshield unit having at least one spoiler (16) and at least one functional connection (40, 40', 42, 42', 42", 42'"), the functional connection being provided for connecting a heating element (18, 18') to an electrical supply line (20) and / or for connecting a wiper liquid channel (22) of the windshield unit (12) to a wiper liquid supply line (24), characterized in that The at least one windshield unit (12) has at least one connecting element (30, 30') connected to at least one spoiler (16), the connecting element being configured to be directly and detachably coupled to at least one wiper arm adapter (34), the wiper arm adapter (34) being fixedly coupled to the wiper arm (32), wherein the at least one connecting element (30, 30') is constructed integrally with the at least one spoiler (16), wherein the at least one windshield unit (12) has at least two windshield subunits (26, 26'), each of which has at least one spoiler of the spoiler (16). The invention relates to a windshield subunit (28, 28'), at least one functional connection (40, 40', 42, 42', 42", 42'") and at least one connecting element (30, 30'), wherein at least two windshield subunits (26, 26') respectively have a coupling region (36, 36') in the end region of their main extension, in which coupling region at least one functional connection (40, 40', 42, 42', 42", 42'") of each windshield subunit (26, 26') is arranged, and the coupling region is provided for direct and releasable coupling to a coupling region (38) of a wiper arm adapter (34).

2. The scraper blade device according to claim 1, characterized in that The connecting elements (30, 30') of at least two windshield subunits (26, 26') respectively partially start from the corresponding spoiler subunits (28, 28') and extend along the main extension direction of the spoiler subunits (28, 28') into the corresponding coupling areas (36, 36') of the at least two windshield subunits (26, 26').

3. The scraper blade device according to claim 1, characterized in that At least one heating element (18, 18') is arranged on the windshield unit (12) and extends along at least one windshield subunit (26, 26') on a side opposite to at least one spoiler subunit (28, 28') of at least one windshield subunit of at least two windshield subunits (26, 26').

4. The scraper blade device according to claim 1, characterized in that At least two windshield subunits (26, 26') each have at least one groove (44) extending in the main extension direction of the windshield unit (12) on the side facing away from at least one spoiler subelement (28, 28'), in which a heating element (18) is arranged.

5. The scraper blade device according to claim 1, characterized in that At least two windshield subunits (26, 26') each have at least one scraping liquid channel (22, 22'), which is at least partially arranged in a spoiler subelement (28, 28') of each windshield subunit of the at least two windshield subunits (26, 26').

6. The scraper blade device according to any one of claims 1 to 5, characterized in that At least two windshield subunits (26, 26') each have at least one first functional connection (42, 42', 42", 42'") and at least one second functional connection (40, 40'), which connect the heating element (18) to the electrical supply line (20) and / or connect the wiping liquid channel (22) to the wiping liquid supply line (24).

7. The scraper blade device according to claim 1, characterized in that The scraper arm adapter (34) is coupled to the scraper arm (32) in a captive manner.

8. The scraper blade device according to claim 5, characterized in that The at least one scraping liquid channel (22, 22') is respectively arranged completely within the spoiler sub-element (28, 28') of each windshield sub-unit of at least two windshield sub-units (26, 26').

9. A wiper system comprising a wiper arm (32) and a wiper blade device (10) according to any one of claims 1 to 8, characterized in that A wiper arm adapter (34) is fixedly connected to the wiper arm (32) and is configured to be releasably connected to the wiper blade device (10), and comprises at least one adapter functional connector (52, 52', 54, 54', 54", 54'") for coupling to at least one functional connector (40, 40', 42, 42', 42", 42'") of at least one windshield unit (12).

10. Method for installing a scraper system (50) according to claim 9.

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