DE102020200344A1 - Wiper blade device - Google Patents

Abstract

The invention is based on a wiper blade device (12a; 12b) with at least one wiper blade adapter (16a; 16b) on which at least one wiper arm adapter (20a; 20b) is used to connect a wiper blade (14a; 14b) to a wiper arm (18a; 18b). can be arranged, the wiper blade adapter (16a; 16b) having at least one base body element (28a; 28b) that can be arranged on a wiper strip (24a; 24b) and / or on at least one spring rail (26a; 26b) of the wiper blade (14a; 14b) it is proposed that the wiper blade device (12a; 12b) have at least one heat conducting element (30a; 30b) which is at least partially in contact with the base body element (28a; 28b) for the transfer of heat from at least one functional unit (78a; 78b) to the base body element (28a; 28b) ) having.

Description

State of the art

A wiper blade device with at least one wiper blade adapter, on which at least one wiper arm adapter can be arranged to connect a wiper blade to a wiper arm, the wiper blade adapter having at least one base body element that can be arranged on a wiper strip and / or on at least one spring rail of the wiper blade, has already been proposed.

Disclosure of the invention

The invention is based on a wiper blade device with at least one wiper blade adapter, on which at least one wiper arm adapter can be arranged to connect a wiper blade to a wiper arm, the wiper blade adapter having at least one base body element that can be arranged on a wiper strip and / or on at least one spring rail of the wiper blade.

It is proposed that the wiper blade device have at least one heat-conducting element, which is at least partially in contact with the base body element, for transferring heat from at least one functional unit to the base body element.

In this context, a “wiper blade device” should be understood to mean in particular 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 flat bar design and / or at least as part of a flat bar wiper and / or as a wiper blade in flat bar design and / or as a flat bar wiper. The wiper blade device is preferably provided for use on a vehicle. The wiper blade device is preferably provided for cleaning a surface, in particular a window, on a vehicle. In particular, the wiper blade device is coupled to a vehicle, in particular a wiper arm of a vehicle, for cleaning a vehicle window. “Provided” is to be understood as meaning, in particular, specially set up, specially designed and / or specially equipped. The fact that an object is provided for a specific function should be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. In this context, an “operating state” is to be understood in particular as a state in which the wiper blade device is ready for a wiping process and / or a wiping operation and / or is in a wiping operation in which the wiper strip is guided in particular over a vehicle window and is thereby advantageously rests on the vehicle window.

A “wiper arm” is to be understood in particular as a unit of the windshield wiper which is provided to move the wiper blade device attached to the wiper arm, in particular by the wiper arm adapter, and in particular a wiper blade comprising the wiper blade device, to clean 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. The wiper arm preferably has at least one, in particular at least two, wiper fluid supply line (s) which can be connected to the wiper water nozzles of the wiper blade.

A “wiper fluid supply line” should in particular be understood to mean an element with a channel-like recess, such as a hose or a pipe, the channel-like recess being provided for guiding a fluid, in particular wiper fluid. The wiper fluid supply line preferably extends at least over a large part of the main extent of the wiper arm from an end of the wiper arm that can be connected to the drive shaft of the wiper drive of the vehicle to an end of the wiper arm that can be connected to the wiper arm adapter. A “main extension” of an object should be understood to mean an extension which the object has parallel to a longest edge length of a smallest cuboid which completely surrounds the object. A large part of an extension should be understood to mean preferably at least 70%, preferably at least 80%, of the extension. The wiper fluid supply line is provided to guide wiper fluid at least partially from a wiper fluid reservoir at least to / into the wiper blade device. The wiper fluid supply line preferably has an at least substantially circular cross section. Alternatively, it is conceivable that the wiper fluid supply line has a polygonal, in particular at least substantially square, cross-section, an elliptical cross-section or another cross-section that appears useful to a person skilled in the art. The at least one wiper fluid supply line is preferably at least substantially arranged parallel to the wiper arm. “Essentially parallel” should be understood here to mean in particular an alignment of a direction relative to a reference direction, in particular in a plane, the direction in particular having a deviation from the reference direction, in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.

The wiper arm preferably comprises at least one, in particular at least two, electrical supply line / s, such as a cable, which can be connected to the wiper blade device, in particular via the wiper blade device to a heating element of the wiper blade. The electrical supply line preferably extends at least over a large part of the main extent of the wiper arm from an end of the wiper arm that can be connected to the drive shaft of the wiper drive of the vehicle to an end of the wiper arm that can be connected to the wiper arm adapter. The electrical supply line is provided for supplying energy to at least one electrical component, in particular the functional unit. The electrical supply line is provided to conduct electrical current at least partially from a power generator, in particular a battery, a generator such as an alternator and / or a dynamo, to / into the wiper blade device. The at least one electrical supply line is preferably arranged at least substantially parallel to the wiper arm. At least two, in particular exactly two, electrical supply lines are preferably arranged on the wiper arm.

In this context, a “wiper arm adapter” is to be understood in particular as an adapter that can be connected both to a wiper arm component, in particular captive, and to the wiper blade adapter, in particular captively, and is provided for the purpose of connecting the wiper blade device, in particular the wiper blade adapter to connect with the wiper arm, in particular captive. The wiper blade device can preferably be connected to a vehicle, in particular a wiper arm of a vehicle, by means of the wiper arm adapter and the wiper blade adapter.

A “wiper strip” is to be understood in particular as a unit made of at least one elastic material as a wiper base body with a wiper lip, which is provided for cleaning a surface to be cleaned, in particular a window surface, preferably a vehicle window, in contact with the one to be cleaned Surface to be moved. The wiper strip is preferably made from a natural or artificial elastomer, in particular from a plastic and / or from rubber. It is conceivable that the wiper base body is formed in one piece with the wiper lip. In this context, a “wiper lip” is to be understood in particular as an elastic lip which is provided for the purpose of wiping over, wiping and / or cleaning a window, in particular a vehicle window, with a wiping edge. “In one piece” is to be understood to mean, in particular, at least cohesively connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears sensible to a person skilled in the art, and / or advantageously formed in one piece, for example by a Production from a cast and / or by production in a single or multi-component injection molding process or extrusion process, for example also a co-extrusion process, and advantageously from a single blank. Preferably, this should be understood to mean, in particular, in one piece, particularly preferably manufactured in a primary molding process. The wiper base body of the wiper strip is preferably designed to receive a spring rail for stabilization. In particular, the wiper strip can at least partially and preferably completely form at least one spring rail receptacle. In this context, “elastic” is to be understood in particular to mean that an object can be repeatedly deformed without the object being mechanically damaged or destroyed as a result, and which, in particular after deformation, automatically strives back to a basic shape. In order to receive the spring rail, the wiper strip forms, in particular, at least partially and preferably completely, a spring rail receptacle. In this context, a “spring rail receptacle” is to be understood in particular as a channel or a groove which is provided to at least partially receive the spring rail. The spring rail receptacle is preferably provided to substantially encompass the spring rail at least over a substantial part of a main extent. The wiper strip preferably forms two spring rail receptacles designed as lateral receiving grooves, which are provided for partially receiving at least one spring rail element in each case. As an alternative or in addition, the wiper strip can form at least one spring rail receptacle designed as a spring rail channel, which is provided for completely receiving the at least one spring rail. The at least one wiper strip is designed to be connectable to the at least one spring rail through 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. The wiper strip is advantageously connected to the spring rail in a form-fitting, in particular force-fitting manner.

A “spring rail” is to be understood in particular as a macroscopic structural unit which has at least one extension that in a normal operating state and / or assembled state by at least 10%, in particular by at least 20%, preferably by at least 40% and particularly advantageously by at least 50% is elastically changeable, and which in particular generates a counterforce which is dependent on a change in the extension and preferably proportional to the change and which counteracts the change. In a mounted state, the spring rail has in particular at least one spring rail element and in particular at least one heating element. The heating element is designed in particular as a film-like electrical heater, which is provided in particular to heat the spring rail and / or a wiper strip and is preferably glued to the spring rail element. In this context, a “mounted state” is to be understood in particular as a state in which the wiper blade device is ready for a wiping process and / or a wiping operation. In particular, the wiper blade device is arranged in a mounted state on a wiper arm and / or coupled to a wiper arm, with a mechanical, electrical and / or fluidic coupling in particular between the wiper arm and the wiper blade device. The at least one spring rail element is preferably formed at least partially from a metal. Alternatively or additionally, it is conceivable that the spring rail element is at least partially formed from a plastic, from a composite material or from another material that appears sensible to a person skilled in the art. The spring rail element is preferably formed at least partially from a spring steel. In an unloaded state, the spring rail preferably has at least essentially the shape of a curved rod and, particularly advantageously, a flattened curved rod. The spring rail can be designed in one piece or in several pieces. A curvature of the spring rail along the spring rail in an unloaded state is preferably 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 and / or installed state.

In this context, a “wiper blade adapter” is to be understood in particular as an adapter which has a contact area to a wiper blade component and is captively connected to the wiper blade component and is provided for a coupling area of the wiper blade component for coupling and / or contacting a component, in particular Wiper arm adapter to be formed on a surface to be cleaned, in particular a vehicle window. The wiper blade device can preferably be connected to a vehicle, in particular a wiper arm of a vehicle, by means of the wiper blade adapter and the wiper arm adapter.

For example, the wiper blade adapter comprises at least one, in particular exactly one, bearing element. The bearing element is preferably provided for connecting the base body element to an adapter connecting element of the wiper blade adapter. The bearing element preferably connects the base body element and the adapter connecting element to one another in a pivotable manner. The pivot axis preferably extends coaxially to a longitudinal axis of the bearing element. The bearing element is preferably arranged in an end region of the main extension of the wiper blade adapter, in particular of the adapter connecting element and / or of the base body element. An “end area” of an extension of an object in one direction should preferably be understood to mean an area which, starting from one end of the extension of the object in the direction, includes the object up to a maximum of 10%, preferably a maximum of 25%, of the extension of the object. The adapter connection element is preferably mounted so that it can pivot about the pivot axis by at least 15 °, preferably at least 45 °, particularly preferably at least 60 ° and very particularly preferably at least 90 ° with respect to the base body element. The adapter connecting element is preferably mounted so as to be pivotable about the pivot axis by a maximum of 120 °, preferably a maximum of 90 °, with respect to the base body element. It is conceivable that the bearing element is designed as a bolt or rivet. It is conceivable that the wiper blade adapter, in particular the adapter connecting element, is formed in one piece, in particular in one piece, with the wiper arm adapter. “In one piece” is to be understood in particular to be at least cohesively connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears sensible to a person skilled in the art, and / or advantageously formed in one piece, for example by a Manufactured from a single casting and / or by manufacturing in a single or multi-component injection molding process and advantageously from a single blank. “In one piece” is to be understood in particular as being formed in one piece. This piece is preferably produced from a single blank, a mass and / or a casting, particularly preferably in an injection molding process, in particular a one-component and / or multi-component injection molding process. In particular, it is conceivable that the adapter connecting element is designed in one piece, in particular in one piece, with the wiper arm adapter. It is conceivable that the wiper arm adapter together with the adapter connecting element with respect to the base body element is pivotably mounted about the pivot axis. The adapter connecting element preferably has a volume / main extension that is approximately twice as large as the wiper arm adapter. A “volume” of an object is to be understood in this context as the volume of a smallest imaginary cuboid which just completely encloses the object. It is also conceivable that the adapter connection element and the wiper arm adapter have an approximately equal volume / main extension or that the wiper arm adapter has a volume / main extension that is about twice as large as the adapter connection element.

The wiper blade device preferably has precisely one heat-conducting element. A “thermally conductive element” is to be understood in particular as a macroscopic element which consists at least essentially of a thermally conductive material. A “thermally conductive material” should in particular be a material with a thermal conductivity of at least 5 W / m / K, in particular at least 15 W / m / K, advantageously at least 100 W / m / K and particularly advantageously at least 200 W / m / K 20 ° C. The heat-conducting element preferably consists at least essentially of copper and / or of aluminum and / or of silver and / or of gold and / or another heat-conducting material that appears sensible to a person skilled in the art. The heat-conducting element is preferably provided to transfer heat from at least one functional unit to the base body element. The heat-conducting element is particularly preferably in thermal contact with the base body element. The fact that the heat-conducting element is "thermally contacted" with the base body element is to be understood in particular as meaning that the heat-conducting element is advantageously connected to the base body element via at least one form fit and / or another connection that appears sensible to a person skilled in the art and / or cohesively with is connected to the base body element, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears sensible to a person skilled in the art. As an alternative or in addition, a heat-conducting paste and / or a heat-conducting gel, for example, could be arranged between the heat-conducting element and the base body element.

The configuration of the wiper blade device according to the invention makes it possible in particular to increase comfort in a cost-effective manner. An additional active heating element, in particular for heating the wiper blade adapter, in particular its main body element, can advantageously be dispensed with. In addition, a current conduction for an additional active heating element can advantageously be dispensed with. It is advantageously possible to dispense with, in particular, an additional plug for supplying power to an additional active heating element. In particular, it can thereby be ensured that wiper water cannot freeze or thaw in all water-bearing parts.

The functional unit can in particular be part of the wiper blade device. For example, the functional unit could be designed as a heated hydraulic and / or electrical connector. The functional unit is advantageously designed as the spring rail, as a result of which, in particular, an efficient possibility for heating the base body element can be provided.

It is further proposed that the heat-conducting element is at least partially and preferably largely enclosed by the base body element. In addition, the wiper strip can have at least one In particular, the heat-conducting element is embedded in the base body element during a production step of a production process, in particular during a forming step of the base body element. In this way, an advantageous transfer of heat from the functional element to the base body element can be achieved. For example, at least a partial area of the heat-conducting element could at least partially protrude from the base body element.

For example, the heat-conducting element could be formed separately from the base body element. For example, the heat-conducting element could be subsequently mounted on the base body element, for example pushed into the base body element. The heat-conducting element is advantageously designed in one piece with the base body element. In this way, an advantageous heat transfer can be achieved. In particular, a cost-efficient production of the wiper blade device can thereby be achieved.

The heat-conducting element could, for example, be produced from the base body element in a 3D printing process. For example, the base body element with the heat-conducting element could be produced in a common 3D printing process. Alternatively, the base body element could be 3D printed around the heat-conducting element. Alternatively, the base body element could be produced in a 3D printing process and the heating element could then be inserted into the base body element in an area provided for this purpose. The heat-conducting element is preferably encapsulated by the base body element, in particular in a plastic injection molding process. A particularly cost-effective production of the wiper blade device can thereby be achieved.

It is also proposed that the wiper blade adapter have at least one fluid output unit. The fluid dispensing unit is provided, in particular, to dispense, in particular to spray, a fluid onto the window in order to clean the window. The fluid is preferably designed as a mopping water. The wiper blade, in particular a wiper lip of the wiper blade, is preferably provided to wipe over the window to clean the window. In particular, the wiper blade is provided to wipe away dirt from the windshield that is located on the windshield and / or a fluid discharged onto the windshield by the fluid output unit. In particular, a particularly high level of comfort can be achieved in this way.

It is further proposed that the base body element have at least two fluid channels, which are provided to supply the fluid output unit with fluid technology, the heat conducting element being at least partially arranged between the fluid channels. The heat-conducting element is preferably aligned perpendicular to a main extension of the spring rail. In particular, the heat-conducting element is aligned centrally between the two fluid channels. In particular, the heat-conducting element is provided to give off heat to the two fluid channels, in particular a fluid located in the fluid channels. The heat-conducting element is preferably arranged in contact with the fluid located in the fluid channels. At least a partial area of the heat-conducting element is preferably arranged at least partially within the fluid channel. In this way, a particularly high level of frost protection can be achieved, particularly in winter. “Fluid channels” are to be understood as meaning, in particular, channel-like recesses in the base body element. The fluid channels are in particular formed separately from one another. The fluid channels preferably have an at least substantially circular cross section. Alternatively, it is conceivable that the fluid channels have a polygonal, in particular at least essentially square, cross-section, an elliptical cross-section or another cross-section that appears useful to a person skilled in the art.

For example, the heat conducting element could be designed as a milled part, a cast part, a wire or an extruded profile. The heat-conducting element is preferably designed as a stamped part, in particular as a stamped and bent part. In this way, a particularly cost-effective heat conduction element can be provided.

It is also proposed that the heat-conducting element have at least essentially an L-shaped profile. In this way, a particularly efficient transfer of heat from the functional unit to the base body element can be achieved. Alternatively, the heat conducting element could have a T-shaped profile or an I-shaped cross section. Alternatively or additionally, the heat conducting element could have a round, in particular cylindrical, cross section.

The invention is also based on a method for producing a wiper blade device with at least one wiper blade adapter, on which at least one wiper arm adapter can be arranged to connect a wiper blade to a wiper arm, a base body element of the wiper blade adapter at least on a wiper strip and / or on at least one spring rail Wiper blade is arranged.

It is proposed that at least one heat-conducting element is thermally contacted with the base body element. This enables a particularly cost-efficient provision of convenience.

The wiper blade device according to the invention, the wiper blade according to the invention and / or the method according to the invention are not intended to be restricted to the application and embodiment described above. In particular, the wiper blade device according to the invention, the wiper blade according to the invention and / or the method according to the invention can have a number differing from a number of individual elements, components and units as well as method steps mentioned herein for performing a mode of operation described herein. In addition, in the case of the value ranges specified in this disclosure, values lying within the stated limits should also be deemed disclosed and can be used in any way.

Figure list

Further advantages emerge from the following description of the drawings. Two exemplary embodiments of the invention are shown in the drawing. 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 meaningful further combinations.

• 1 Eine schematische Darstellung eines Wischblatts mit einer Wischblattvorrichtung in einem an einem Fahrzeug montierten Zustand,
• 2 eine Teilansicht der Wischblattvorrichtung mit einem Wischblattadapter in einem geschlossenen Zustand,
• 3 eine teilweise transparente Darstellung des Wischblattadapters mit einem Wärmeleitelement in einem montierten Zustand,
• 4 eine Schnittdarstellung durch den Wischblattadapter mit dem Wärmeleitelement,
• 5 ein Flussdiagramm eines Verfahrens zur Herstellung der Wisch blattvorrichtu ng,
• 6 eine Teilansicht eines weiteren Ausführungsbeispiels der Wischblattvorrichtung.

Show it:

• 1 A schematic representation of a wiper blade with a wiper blade device in a state mounted on a vehicle,
• 2 a partial view of the wiper blade device with a wiper blade adapter in a closed state,
• 3 a partially transparent illustration of the wiper blade adapter with a heat conducting element in an assembled state,
• 4th a sectional view through the wiper blade adapter with the heat conducting element,
• 5 a flow chart of a method for producing the wiper blade device,
• 6th a partial view of a further embodiment of the wiper blade device.

Description of the exemplary embodiments

In 1 is a windshield wiper 10a as part of a motor vehicle 11a shown. The car 11a has a disc 22a , in particular a windshield, the windshield wiper 10a for cleaning the window 22a is provided. But it is also conceivable that the windshield wiper 10a for cleaning another window of the motor vehicle 11a is provided. The windshield wiper 10a comprises a wiper blade device 12a with a wiper blade 14a , which has a wiper blade adapter 16a has, and with a wiper arm 18a , which has a wiper arm adapter 20a having. The wiper blade device 12a is, especially about the wiper arm 18a , on an outer edge of the disc 22a rotatably mounted. The wiper arm 18a cannot be lost on the motor vehicle 11a arranged. The wiper blade 14a has a contact area to the disc 22a on. The wiper blade is preferred 14a provided with the wiper arm 18a and / or the wiper arm adapter 20a of the wiper arm 18a to be connected. The wiper arm adapter 20a has a contact area to the wiper arm 18a up and is with the wiper arm 18a connected. The wiper arm adapter is preferred 20a provided a coupling area of the wiper arm 18a for coupling and / or contacting with the wiper blade adapter 16a provide.

In 2 Fig. 3 is an external view of the wiper blade device 12a with a connection unit 48a , in a connected state of a connection unit 48a the wiper blade device shown. The connection unit 48a comprises a connecting element 52a and another connecting element 54a that are formed in one piece (see 2 and 3 ). But it is also conceivable that the connecting element 52a and the further connecting element 54a are formed separately from one another and / or are attached to one another. The connecting element 52a and the further connecting element 54a each at least partially delimit one of two fluid channels 44a , 46a . The connection unit 48a comprises a valve element 56a and another valve element 58a , the valve element 56a on the connecting element 52a is arranged and the further valve element 58a on the further connecting element 54a is arranged. The valve element 56a and the further valve element 58a are provided for the fluid-technical connection of the fluid channels 44a , 46a with the wiper blade adapter 16a , in particular of fluid connection elements 50a to train lockable. The connecting element 52a delimits a fluid channel 44a of the two fluid channels 44a , 46a . The other connecting element 54a delimits another fluid channel 46a of the two fluid channels 44a , 46a . The two fluid channels 44a , 46a are about the fastener 52a and the further connecting element 54a fluidly formed separately from each other. The fluid line elements 36a run at least partially along a wiper rod 38a . Fluid line elements 36a are along a main axis of extension 60a of the wiper arm 18a , in particular in an at least substantially perpendicular to the main extension axis 60a of the wiper arm 14a extending plane viewed, at least largely from the wiper rod 38a enclosed. In particular, the connection unit 48a , especially the connector 52a and / or the further connecting element 54a , along the main extension axis 60a of the wiper arm 14a viewed in one of the wiper rods 38a and / or the fluid line elements 36a facing direction of the fixing element 42a and / or a bearing element 40a arranged.

The valve element 56a and the further valve element 58a are designed as Dunlop valves. But there are also other configurations of the valve elements 56a , 58a conceivable, for example as a Sclaverand valve, as a Schrader valve, as a diaphragm valve or as a check valve. The valve element 56a and the further valve element 58a are designed to be mechanically and / or hydraulically controllable, in particular via the fluid. But it is also conceivable that the valve element 56a and the further valve element 58a are designed to be electrically, electronically and / or pneumatically controllable, for example by means of a control and / or regulating unit (not shown) of the windshield wiper 10a . In particular are / is the valve element 56a and / or the further valve element 58a provided to switch to the closed or the open state when activated. Preferably the valve element is 56a in at least one area of the valve element 56a relative to the fluid channel 44a designed to be movable and / or on the connecting element 52a stored. In particular, the further valve element is 58a in at least one area of the further valve element 58a relative to the further fluid channel 46a designed to be movable and / or, in particular, on the further connecting element 54a , stored. It is conceivable that the valve element 56a and the further valve element 58a are designed to be self-closing, in particular in the open state at least partially at least one closing force, in particular a spring force, for transferring the valve element 56a and the further valve element 58a in the closed state on the valve element 56a and the further valve element 58a works. For example, the valve elements 56a , 58a in at least one area as a spring-loaded ball or as a flexible element, such as in particular a membrane, a hose and / or a rubber ball, in particular a gas-filled ball. It is conceivable that the valve element 56a and / or the further valve element 58a are / is provided for this purpose, of the fluid and / or of one, in particular at least partially on the valve element 56a arranged, actuating element 61a the connection unit 48a to be applied with the opening force.

The valve element 56a is on or in that of the connector 52a limited fluid channel 44a arranged. The further valve element 58a is on or in that of the further connecting element 54a limited further fluid channel 46a arranged. In particular, the valve element 56a integral with the connecting element 52a educated. The further valve element is preferred 58a integral with the further connecting element 54a educated. Preferably, the valve element 56a and the further valve element 58a at least one closed state and at least one open state. in particular is the valve element 56a in the open state of the valve element 56a at least for the most part outside of the fluid channel 44a arranged. The further valve element is preferred 58a in the open state of the further valve element 58a at least for the most part outside of the further fluid channel 46a arranged. In particular, the valve element is in the closed state 56a at least one cross-sectional area of the fluid channel 44a in at least one cutting plane of the connecting element 52a at least substantially completely from the valve element 56a locked. It is preferable for the further valve element to be in the closed state 58a at least one cross-sectional area of the further fluid channel 46a in at least one cutting plane of the further connecting element 54a at least substantially completely from the further valve element 58a locked. Preferably close the valve element 56a and the further valve element 58a the fluid channels 44a , 46a in the closed state of the valve element 56a and the further valve element 58a waterproof. The valve element is / are preferably 56a and / or the further valve element 58a provided when an actuating element (not shown) of the windshield wiper is actuated 10a , especially for cleaning the window 12a , the fluid channel 44a and / or the further fluid channel 46a to open, the fluid through the fluid channel 44a and / or the further fluid channel 46a via the connecting element 52a , the further connecting element 54a and / or the fluid connection elements 50a to the wiper blade 14a , especially the wiper blade adapter 16a , is directed.

The connection unit 48a includes two fasteners 62a , which are intended to be the connecting element 52a and the other connecting element 54a in the connected state of the connection unit 48a on the wiper blade adapter 16a , in particular the fluid connection elements 50a , to fix. In particular, in the 2 and 3 just one of the two fasteners 62a shown, the other of the two fasteners 62a on an opposite side of the connection unit 48a on the further connecting element 54a is arranged. The fasteners 62a are designed as locking elements. Other configurations of the fastening elements 62a are also conceivable, for example as part of a screw connection, as part of a bayonet lock, or the like. The fastening elements 62a are integral with the connector 52a and the further connecting element 54a educated. The fastening elements preferably act 62a for fastening the connecting element 52a and the further connecting element 54a on the wiper blade adapter 16a , in particular the fluid connection elements 50a , with two counter-fastening elements 64a of the wiper blade adapter 16a together, which on the fluid connection elements 50a are arranged.

It is conceivable that the connection unit 48a at least one coupling element 66a comprises, wherein the coupling element 66a is provided for this purpose, the valve element 56a and the further valve element 58a as a function of at least one disconnected state of the connection unit 48a , in particular the connecting element 52a and the further connecting element 54a to close and / or to keep in the closed state. In particular, the coupling element 66a on the connecting element 52a and / or the further connecting element 54a arranged. It is conceivable that the coupling element 66a movable on the connecting element 52a and / or the further connecting element 54a is stored and / or that the coupling element 66a is at least partially magnetizable, in particular the valve element 56a and the further valve element 58a depending on the disconnected state of the connection unit 48a be closed by a magnetic force and / or in the closed state of the valve element 56a being held. The coupling element preferably blocks 66a upon disconnection of the connecting element 52a and the further connecting element 54a of the fluid connection elements 50a the valve element 56a and the further valve element 58a , in particular via a form-fitting and / or force-fitting connection with the valve element 56a and the further valve element 58a . In particular, the coupling element 66a in the disconnected state of the connection unit 48a at least partially on the valve element 56a and the further valve element 58a arranged. For example, the coupling element 66a designed as a spring-loaded pin, the pin when the connecting element is connected 52a and the further connecting element 54a with the fluid connection elements 50a the valve element by a connecting force applied against a spring force 56a and the further valve element 58a releases. In particular in the design of the coupling element 66a as a spring-loaded pin, is the coupling element 66a provided for a separation of the connecting element 52a and the further connecting element 54a of the fluid connection elements 50a to be moved into a blocking position by the spring force, in particular the valve element 56a and the further valve element 58a be closed and / or held in the closed state. It is conceivable that the coupling element 66a on at least one of the fastening elements 62a is arranged and / or to a closure of the valve element 56a and the further valve element 58a and / or holding the valve element 56a and the further valve element 58a in the closed state with the fasteners 62a cooperates. In particular in one embodiment of the wiper arm 18a , especially the connection unit 48a , with the actuation element 61a , it is conceivable that the coupling element 66a is provided to close the valve element 56a and / or the further valve element 58a , especially when the connecting element is disconnected 52a , further connecting element 54a and the fluid connection elements 50a , with the actuation element 61a to work together. The actuation element is preferred 61a provided, in particular for closing the valve element 56a and / or the further valve element 58a , when interacting with the coupling element 66a the opening force from the valve element 56a and / or the further valve element 58a to solve. In particular, the coupling element 66a provided when interacting with the actuating element 61a , the actuation element 61a from the valve element 56a and / or the further valve element 58a to separate.

It is conceivable that the wiper arm 18a a sensor unit 68a for detecting a state parameter of the fluid within the fluid channels 44a , 46a includes. In particular, the sensor unit comprises 68a a sensor element 70a , which on the connecting element 52a , the further connecting element 54a , the valve element 56a and / or the further valve element 58a is arranged. The sensor element is preferably 70a at least within one of the valve element 56a or the further valve element 58a adjacent close range 72a at least one of the fluid channels 44a , 46a arranged. The sensor element is particularly preferred 70a provided for the state parameter of a within the close range 72a to detect arranged fluids. For example, the sensor element 70a , in particular depending on a type of the state parameter of the fluid to be detected, designed as a, in particular optical or mechanical, flow meter, as a manometer, as a thermometer, as an optical sensor, preferably for detecting foreign bodies in the fluid, or the like . Preferably the valve element 56a and the further valve element 58a , in particular via the control and / or regulating unit, with the sensor unit 68a , especially the sensor element 70a connected. The valve elements are preferred 56a and the further valve element 58a provided, if a limit value is exceeded by means of the sensor unit 68a , especially the sensor element 70a , recorded state parameter of the fluid, the fluid channels 44a , 46a , in particular watertight, to close.

The valve element 56a and the further valve element 58a are provided for this purpose, the fluid channels 44a , 46a as a function of the state parameter of the, in particular within the to the valve element 56a adjacent close range 72a one of the fluid channels 44a , 46a arranged to close fluids, in particular watertight. The state parameter of the fluid is designed as a pressure of the fluid. However, it is also conceivable, in particular as a function of a configuration of the valve elements 56a , 58a that the state parameter is designed as a volume flow, as a temperature, as a proportion of foreign bodies in the fluid or the like. The valve element 56a and the further valve element 58a are provided for this purpose, when at least one limit value of the state parameter is exceeded within the close range 72a arranged fluids to be triggered mechanically, in particular the fluid channels 44a , 46a when the valve element is triggered 56a and the further valve element 58a , in particular watertight, are closed. In particular, the valve element 56a and the further valve element 58a provided directly via the fluid, in particular via a pressure of the fluid on the valve element 56a and the further valve element 58a force exerted to be brought into the closed state. The valve elements are particularly preferred 56a and the further valve element 58a provided the fluid channels 44a , 46a as a function of the state parameter of the, in particular within the to the valve element 56a and / or the further valve element 58a adjacent close range 72a the fluid channels 44a , 46a arranged to open or release fluids, in particular after the state parameter of the fluid has dropped below the limit value. In particular, the valve element 56a provided to the fluid channel 44a as a function of the state parameter of the, in particular within the to the valve element 56a adjacent close range 72a of the fluid channel 44a arranged to close fluids, in particular watertight. The further valve element is preferably 58a provided for the further fluid channel 46a as a function of a state parameter of the, in particular within one of the further valve element 58a adjacent close range 72a of the further fluid channel 46a arranged to close fluids, in particular watertight.

Alternatively, it is conceivable that the wiper arm 18a at least one communication and / or line unit 74a comprises, which is provided to the valve element 56a and / or the further valve element 58a with the control and / or regulating unit of the wiper arm 18a and / or the wiper 10a connect to. The communication and / or line unit preferably comprises 74a at least one communication and / or management element 76a that is attached to the valve element 56a and / or the further valve element 58a is arranged. In particular, the communication and / or line unit 74a and the communication and / or conduction element 76a in the 2 indicated. For example, the communication and / or line element runs 76a from the valve element 56a and / or the further valve element 58a , especially along the wiper arm 14a and / or one of the fluid line elements 36a , up to the control and / or regulating unit. The communication and / or line element is preferably 76a for a transmission of at least one optical, haptic and / or acoustic signal from the control and / or regulating unit to the valve element 56a and / or the further valve element 58a , in particular to control and / or regulate the valve elements 56a , 58a , intended. in particular in one embodiment of the wiper arm 18a , in which the valve element 56a and / or the further valve element 58a is electrically and / or electronically controllable, it is conceivable that the communication and / or line element 76a for this purpose, control signals of the control and / or regulating unit, in particular for controlling and / or regulating the valve elements 56a , 58a , via a wireless connection, for example a radio connection and / or induction-based connection, to the valve element 56a and / or the further valve element 58a transferred to. In particular are / is the valve element 56a and / or the further valve element 58a provided to switch to the closed or the open state depending on the transmitted control commands. In particular in one embodiment of the wiper arm 18a with the sensor unit 68a it is conceivable that the communication and / or line unit 74a this is provided by means of the sensor unit 68a state parameter recorded by the sensor unit 68a to be transmitted to the control and / or regulating unit. In particular, the communication and / or line element is 76a with the sensor element 70a the sensor unit 68a connected. In particular in one embodiment of the wiper arm adapter device 12a with the coupling element 66a , it is conceivable that the coupling element 66a is preferably provided for this purpose, the valve element 56a and / or the further valve element 58a , in particular depending on the disconnected state of the connection unit 48a , head for.

3 shows the wiper blade device in an assembled state in a schematic, partially transparent illustration. The wiper blade device 12a includes a wiper strip 24a . The wiper blade device 12a comprises a wind deflector unit 82a . The wind deflector unit 82a is provided for this purpose, one on the wiper blade device 12a to reject effective air flow or a head wind and / or for pressing the wiper blade 14a on a surface to be wiped, in particular a vehicle window. The wind deflector unit 82a is in particular different from a spring rail 26a , the wiper strip 24a , the wiper arm adapter 20a educated. The wind deflector unit 82a is at least partially made of a plastic. The wind deflector unit 82a extends in an assembled state over at least a part, preferably over at least a large part of an extension of the wiper blade device 12a along a main direction of extent of the spring rail 26a , especially the wiper blade 14a . The wind deflector unit 82a is designed to be interrupted in a central area to accommodate the wiper blade adapter 16a .

The wiper blade adapter 16a is intended to use the wiper blade 14a with the wiper arm 18a connect to. On the wiper blade adapter 16a is to a connection of a wiper blade 14a with a wiper arm 18a at least one wiper arm adapter 20a can be arranged. Through the wiper arm adapter 20a and the wiper blade adapter 16a is the wiper blade device 12a with the wiper arm 18a connected. It is conceivable that the wiper blade device 12a the at least one wiper arm adapter 20a having.

The wiper blade adapter 16a has at least one on a wiper strip 24a and / or on at least one spring rail 26a of the wiper blade 14a arrangable base body element 28a on. The wiper blade device 12a has a with the main body element 28a contacted heat conducting element 30a on. The heat conducting element 30a is intended to draw heat from at least one functional unit 78a to the main body element 28a transferred to. The heat conducting element 30a is from the main body element 28a completely enclosed. The heat conducting element 30a is integral with the body element 28a educated. The heat conducting element 30a is from the main body element 28a encapsulated in a plastic injection molding process. The heat conducting element 30a is largely made of copper.

The basic body element 28a has two fluid channels 44a , 46a on. The fluid channels 44a , 46a are for the fluid power supply of a fluid dispensing unit 80a intended. The fluid channels 44a , 46a are as channel-like recesses in the main body element 28a the wiper blade device 12a educated. The wiper blade adapter 16a has the fluid dispensing unit 80a on. The fluid dispensing unit 80a has a plurality of spray nozzles. The fluid dispensing unit 80a is intended for cleaning the window 22a a fluid on the disc 22a to spend, especially to spray. The fluid is designed as a mopping water. The heat conducting element 30a is between the fluid channels 44a , 46a arranged. The heat conducting element 30a is provided in particular to control the temperature of the fluid.

4th shows a sectional view of part of the wiper blade device 12a , some elements are not shown for the sake of clarity. The wiper blade device 12a instructs the functional unit 78a on. The functional unit 78a is as a spring rail 26a educated. The spring rail 26a has at least two spring rail elements 84a on. The spring rail 26a comprises at least one heating element 86a . The spring rail 26a , especially the heating element 86a , is provided in particular to the wiper strip 24a to temper. The heat conducting element 30a is intended to take heat from the spring rail 26a to the main body element 28a transferred to. In the example shown, the heat-conducting element 30a an L-shaped profile. One leg of the heat conducting element 30a is parallel to the heating element 86a aligned and in close proximity to the heating element 86a arranged. The heat conducting element 30a is with the main body element 28a connected without gaps. For example, could be between the heat conducting element 30a and the main body element 28a and / or between the heat conducting element 30a and the heating element 86a a thermal paste and / or a thermal gel can be arranged to improve the heat transfer (not shown). The heat conducting element 30a is designed as a stamped and bent part.

5 shows schematically a method for producing a wiper blade device 12a , with at least one wiper blade adapter 16a on which to connect a wiper blade 14a with a wiper arm 18a at least one wiper arm adapter 20a can be arranged. In a first manufacturing step 88a becomes a heat conduction element 30a with the main body element 28a thermally contacted. The thermal contact is made by overmolding the heat-conducting element 30a with a plastic, whereby the base body element 28a outside around the heat conducting element 30a is formed. In a further manufacturing step 90a becomes the basic body element 28a of the wiper blade adapter 16a on a wiper strip 24a and / or on a spring rail 26a of the wiper blade 14a arranged.

In the 6th a further embodiment is shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, whereby with regard to identically designated components, in particular with regard to components with the same reference numerals, in principle also to the drawings and / or the description of the other exemplary embodiments, in particular the 1 to 5 , can be referenced. To distinguish the exemplary embodiments, the letter a is the reference number of the exemplary embodiment in FIG 1 to 5 re-enacted. In the embodiment of 5 the letter a is replaced by the letter b.

A wiper blade device 12b has a functional unit 78b on. The functional unit 78b is designed as a heated hydraulic connector. The hydraulic connector comprises at least one heating element (not shown). The heating element of the hydraulic connector is provided in particular to control the temperature of the hydraulic connector. The wiper blade device 12b has a wiper blade adapter 16b with a base body element 28b on. Inside the body element 28b is a heat conduction element 30b the wiper blade device 12b arranged and thus with the base body element 28b thermally contacted.

The heat transfer from the functional unit 78b to the heat conducting element 30b takes place in particular in that at least a partial area of the heat-conducting element 30b near the heating element of the functional unit 78b is arranged. The heat transfer from the heat conducting element 30b to the main body element 28b takes place in particular in that the heat conducting element 30b Gap-free with the main body element 28b connected is. The heat conducting element 30b is intended to transfer heat from the hydraulic connector to the main body element 28b transferred to.

Claims (11)

Wiper blade device (12a; 12b) with at least one wiper blade adapter (16a; 16b) on which at least one wiper arm adapter (20a; 20b) can be arranged to connect a wiper blade (14a; 14b) to a wiper arm (18a; 18b), the wiper blade adapter (16a; 16b) at least one base body element (28a; 28b) that can be arranged on a wiper strip (24a; 24b) and / or on at least one spring rail (26a; 26b) of the wiper blade (14a; 14b) characterized by at least one heat conducting element (30a; 30b) which is at least partially in contact with the base body element (28a; 28b) for transferring heat from at least one functional unit (78a; 78b) to the base body element (28a; 28b). Wiper blade device (12a; 12b) according to Claim 1 , characterized by the functional unit (78a; 78b), which is designed as the spring rail (26a; 26b). Wiper blade device (12a; 12b) according to Claim 1 or 2 , characterized in that the heat conducting element (30a; 30b) is at least partially enclosed by the base body element (28a; 28b). Wiper blade device (12a; 12b) according to one of the preceding claims, characterized in that the heat-conducting element (30a; 30b) is formed in one piece with the base body element (28a; 28b). Wiper blade device (12a; 12b) according to Claim 4 , characterized in that the heat conducting element (30a; 30b) is encapsulated by the base body element (28a; 28b). Wiper blade device (12a; 12b) according to one of the preceding claims, characterized in that the wiper blade adapter (16a; 16b) has at least one fluid output unit (80a; 80b). Wiper blade device (12a; 12b) according to Claim 6 , characterized in that the base body element (28a; 28b) has at least two fluid channels (44a, 46a; 44b, 46b) for the fluidic supply of the fluid output unit (80a), the heat conducting element (30a; 30b) at least partially between the fluid channels (44a, 46a; 44b, 46b) is arranged. Wiper blade device (12a; 12b) according to one of the preceding claims, characterized in that the heat-conducting element (30a; 30b) is designed as a stamped part. Wiper blade device (12a; 12b) according to one of the preceding claims, characterized in that the heat-conducting element (30a) has an at least substantially L-shaped profile. Wiper blade (14a; 14b) with at least one wiper blade device (12a; 12b) according to one of the preceding claims. Method for producing a wiper blade device (12a; 12b), in particular according to one of the Claims 1 to 9 , with at least one wiper blade adapter (16a; 16b), on which at least one wiper arm adapter (20a; 20b) can be arranged to connect a wiper blade (14a; 14b) to a wiper arm, a base body element (28a; 28b) of the wiper blade adapter (16a; 16b) is arranged at least on one wiper strip (24a; 24b) and / or on at least one spring rail (26a; 26b) of the wiper blade (14a; 14b), characterized in that at least one heat conducting element (30a; 30b) is thermally contacted with the base body element (28a; 28b).

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