CN111661006A

CN111661006A - Wiping blade apparatus

Info

Publication number: CN111661006A
Application number: CN202010151785.8A
Authority: CN
Inventors: H.德庞特
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2019-03-07
Filing date: 2020-03-06
Publication date: 2020-09-15
Also published as: DE102019203145A1; FR3093485A1; FR3093485B1

Abstract

The invention relates to a wiper blade device having at least one wiper strip (14), at least one windshield unit (12) which at least partially accommodates the wiper strip (14), at least one spoiler (16) and at least one functional connection (40, 40 ', 42', 42 "') which is provided for connecting a heating element (18, 18') to an electrical supply line (20) and/or for connecting a wiping liquid channel (22) of the windshield unit (12) to a wiping liquid supply line (24). It is proposed that the 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, releasable coupling with at least one wiper arm adapter (34) fixedly, in particular loss-proof, coupled with the wiper arm (32).

Description

Wiping blade apparatus

Technical Field

The present invention relates to a wiper blade apparatus.

Background

A wiper blade device has been proposed, having at least one wiper strip, at least one windshield unit which at least partially accommodates the wiper strip, at least one turbulence generator and at least one functional joint which is provided for connecting the heating element to an electrical supply line and/or for connecting the wiping liquid channel of the windshield unit to a wiping liquid supply line.

Disclosure of Invention

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

It is proposed that at least one windshield unit has at least one connecting element which is connected to at least one spoiler and which is provided for direct, releasable coupling with at least one wiper arm adapter which is fixedly, in particular loss-proof, coupled with the wiper arm. Preferably, the wiper blade apparatus is free of a wiper blade adapter. In particular, a direct, releasable coupling of the wiper arm adapter to the windscreen unit takes place.

In this context, a "wiper blade device" is to be understood in particular as at least one part, in particular a sub-structural component, of a wiper blade, in particular of a glass wiper blade and advantageously of a vehicle glass wiper blade. In particular, the wiper blade arrangement can also comprise the entire wiper blade, in particular the entire glass wiper blade and advantageously the entire vehicle glass wiper blade. It is conceivable that the wiper blade arrangement is configured here at least as a part of a wiper blade in the manner of a flat-beam construction and/or as a part of a flat-beam scraper and/or as a wiper blade in the manner of a flat-beam construction and/or as a flat-beam scraper. Preferably, the wiper blade apparatus is provided for use on a vehicle. Preferably, the wiper blade device is provided for cleaning surfaces, in particular the glass on a vehicle. The wiper blade device is coupled to a vehicle, in particular a wiper arm of the vehicle, in particular for cleaning a vehicle window. "provided" is to be understood in particular as meaning specially set, specially designed and/or specially equipped. An object is provided for a specific function, in particular, in the sense that the object fulfills and/or implements the specific function in at least one application and/or operating state. In this context, an "operating state" is to be understood to mean, in particular, 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 the vehicle window and, in this case, advantageously rests against the vehicle window.

A "wiper arm" is to be understood to mean, in particular, a unit of a windshield wiper, which is provided for moving on a vehicle window, in particular via a wiper arm adapter, a wiper blade device fastened to the wiper arm, and in particular a wiper blade of the wiper blade device, in order to clean the vehicle window. Preferably, the wiper arm is arranged on at least one drive shaft of a wiper drive of a window wiper of a vehicle. The wiper arm can be driven, in particular, by a wiper drive for movement relative to the vehicle window.

In this context, a "wiper arm adapter" is to be understood to mean, in particular, an adapter which has a contact region with respect to the wiper arm member and is connected to the wiper arm member in a loss-proof manner and is provided for providing a coupling region of the wiper arm member for coupling and/or contacting a component, in particular a windshield unit, on a surface to be cleaned, in particular a vehicle window pane. By means of the wiper arm adapter and the damper unit, the wiper blade device is preferably designed to be coupled to a vehicle, in particular a wiper arm of a vehicle.

A "wiping strip" is to be understood to mean, in particular, a unit made of at least one elastic material (as wiping base) and a wiping lip, which is provided for a contact-type movement over a surface to be cleaned, in particular a glass surface, preferably a vehicle glass, for cleaning the surface to be cleaned. Preferably, the scraping strip is made of a natural or artificial elastomer, in particular of a synthetic material and/or of rubber. It is conceivable for the wiping base body to be constructed in one piece with the wiping lip. In this context, a "wiping lip" is to be understood as meaning, in particular, an elastic lip which is provided for wiping, scraping and/or cleaning a glass, in particular a vehicle glass, with a wiping edge. "one-piece" is to be understood in particular to mean at least a material-fused connection, for example a material-fused connection by means of a welding process, a gluing process, a spraying process and/or other processes which appear to be expedient to the person skilled in the art, and/or advantageously to be shaped as one object, for example by means of production by casting and/or by means of production in a single-or multi-component spraying or extrusion process, for example also a coextrusion process, and advantageously by means of production from a single blank. Preferably, one-piece should be understood in particular as a one-piece, particularly preferably manufactured in a forming process. Preferably, the wiper base of the wiper strip is designed to receive a spring rail for stabilization. The wiper strip can in particular have at least one spring rail receptacle at least partially and preferably completely. In this connection, "elastic" is to be understood in particular to mean that the object can be deformed repeatedly without mechanically damaging or destroying the object, and in particular automatically returns to the basic shape after the deformation. In particular, the wiper strip at least partially and preferably completely forms a spring rail receptacle for receiving the spring rail. In this context, a "spring rail receptacle" is to be understood to mean, in particular, a channel or a groove which is provided to at least partially receive a spring rail. Preferably, the spring rail receptacle is provided for substantially enclosing the spring rail at least over a major part of the main extension direction. Preferably, the wiper strip forms two spring rail receptacles, which are formed as lateral receptacles and are provided for the partial accommodation of in each case at least one spring rail. Alternatively or additionally, the wiper strip can form at least one spring rail receptacle, which is designed as a spring rail channel and is provided for the complete accommodation of the at least one spring rail. The at least one wiper strip is configured 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 wiper strip is connected in a form-locking manner, in particular force-transmitting manner, to the spring rail.

A "spring rail" is to be understood to mean, in particular, a macroscopic element having at least one extension which can be elastically changed by at least 10%, in particular by at least 20%, preferably by at least 40%, and particularly advantageously by at least 50%, in the normal operating state and/or in the installed state, and which generates, in particular, a counterforce which is related to the change of the extension and preferably proportional to the change in resistance to the change. In this connection, the "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, in the mounted state, the wiper blade device is arranged on the wiper arm and/or is coupled to the wiper arm, wherein in particular a mechanical, electrical and/or fluidic coupling is present between the wiper arm and the wiper blade device. Preferably, the at least one spring rail is constructed at least partially from metal. Alternatively or additionally, it is conceivable for the spring rail to be constructed at least partially from synthetic materials, composite materials or other materials which appear to be expedient to the person skilled in the art. Preferably, the spring rail is at least partially constructed from spring steel. Preferably, the spring rail has at least substantially the shape of a curved bar and a particularly advantageously flattened curved bar in the unloaded state. 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 the vehicle glass surface of the vehicle, in particular of the vehicle glass on which the spring rail is guided in at least one operating state and/or in the installed state.

A "wind deflector unit" is to be understood to mean, in particular, a unit which is provided for blocking an air flow or a traveling wind acting on the wiper blade device and/or for pressing the wiper blade against a surface to be wiped, in particular a vehicle window. The windshield unit is in particular configured differently than the spring rail, the wiper strip, the wiper arm adapter and/or the spring rail. Preferably, the windscreen unit is at least partly constructed of a synthetic material. Advantageously, the windscreen unit extends in the operating state and/or in the mounted state over at least a part, preferably at least a majority, of the extension of the wiper blade device in the main extension direction of the spring rail, in particular of the wiper blade. In particular, the spoiler of the wind deflector unit is provided for blocking the travelling wind and has at least one concave flow-through surface. Preferably, the spoiler of the windshield unit extends at least over a substantial part of the extension of the windshield unit. The "main extension direction" of the object is to be understood as the direction parallel to the longest edge length of the smallest cuboid, which completely surrounds the object. The majority of the extension should preferably be understood as being at least 70%, preferably at least 80% of the extension.

A "connecting element" is to be understood to mean, in particular, an element which is provided to connect an object to at least one further object. Preferably, at least one, in particular exactly one, connecting element directly and releasably connects the wiper blade device, in particular the windscreen unit, with the wiper arm adapter. Preferably, the connecting element is latched to and/or in the further object for connection to the further object. Preferably, the connecting element is provided for a direct, releasable latching connection between the wiper blade device, in particular the windscreen unit, and the wiper arm adapter. Preferably, the connecting element is formed by a latching means. In this context, "latching means" is to be understood to mean, in particular, spring elastic means for producing a latching connection, which are provided for elastic deflection during installation. Preferably, the at least one connecting element is configured to be connected with the at least one spoiler of the windshield unit.

Preferably, the scraping blade device is provided for delivering the scraping liquid, in particular in at least one scraping 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 having a water content, an antifreeze content and/or an alcohol content. The term "wiping direction" is to be understood to mean advantageously a direction in which the wiping blade is moved over a surface, in particular a glass, in particular a vehicle glass, in at least one operating state and/or in an installed state. The wiping direction extends in particular perpendicularly to the longitudinal extension of the wiping strip and parallel to the vehicle glazing to be wiped. A wiping direction upward/downward orientation is to be understood in particular to mean that the wiping direction has at least one movement component which is oriented upward/downward with respect to the vehicle.

By a "wiping liquid channel" is to be understood, in particular, a channel-like recess in at least one windshield unit, wherein the channel-like recess is provided for guiding a fluid, in particular a wiping liquid. A "channel-like recess" is to be understood to mean, in particular, a material-limited recess which, in at least one operating state and/or installed state, is provided for the purpose of passing through a fluid, in particular for scraping off a liquid. The expression "through the fluid" in at least one operating state and/or in the installed state of the wiping liquid channel is to be understood in particular to mean that the wiping liquid channel is provided in the operating state and/or in the installed state for transporting the fluid which has reached the end of the wiping liquid channel, in particular through the wiping liquid channel, from one end of the wiping liquid channel to the end of the wiping liquid channel opposite the one end of the channel. Preferably, the wiping liquid channel has an at least substantially circular cross-section. Alternatively, it is conceivable for the wiping liquid channel to have a polygonal, in particular at least substantially rectangular, cross section, an oval cross section or other cross sections which appear to be expedient to the person skilled in the art. Preferably, the wiping liquid channel is bounded by a windscreen unit. Alternatively, it is conceivable for the wiping liquid channel to be constructed, for example, from a one-piece or multi-piece elastic hose and/or a one-piece or multi-piece tube in a recess in the windshield unit. Other configurations of the wiping liquid channel, such as a coupled arrangement of hollow spaces of different types of components of the windshield unit, which are obvious to the person skilled in the art, are also conceivable. It is conceivable for the windshield unit to have at least two, in particular exactly two, wiping liquid channels. At least one wiping liquid channel has at least one outlet element. An "outlet element" is to be understood as an element provided for the outlet of a fluid. The output element may be configured in the form of a nozzle and/or an opening. By means of the outlet element, the wiper blade device can fulfill at least one advantageous wiping liquid rinsing function.

A "wiping liquid supply line" is to be understood to mean, in particular, an element, such as a hose or a pipe, having a channel-like recess, wherein the channel-like recess is provided for guiding a fluid, in particular a wiping liquid. The wiping liquid supply line preferably extends from the vehicle to the wiping arm adapter over at least a substantial part of the main extension of the wiping arm. A wiping liquid supply line is provided for coupling with the wiping liquid channel. A wiping liquid supply line is provided for guiding wiping liquid at least partly from the wiping liquid reservoir to/into the wiping blade device. The wiping liquid supply line preferably has an at least substantially circular cross-section. Alternatively, it is conceivable for the wiping liquid supply line to have a polygonal, in particular at least substantially rectangular, oval or other cross-section which is relevant to the person skilled in the art. Preferably, the at least one wiping liquid supply line is arranged at least substantially parallel to the wiping arm. "at least substantially parallel" is to be understood here to mean, in particular, an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has, in particular, a deviation of less than 8 °, advantageously less than 5 °, and particularly advantageously less than 2 ° relative to the reference direction.

A "heating element" is preferably to be understood as an element which converts the supplied energy, in particular electrical energy, into heat and is provided for outputting 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, a heating element is provided for the tempering windshield unit and/or the spring rail and/or the wiping strip. Preferably, the at least one heating element extends over a majority, in particular over the entire main extension, of the at least one windshield unit. Preferably, the at least one heating element is arranged on a side of the windscreen unit facing the wiping strip. Preferably, the at least one heating element is arranged with its main extension at least substantially in parallel with the main extension plane of the at least one spring rail. By "main extension plane" should be understood a plane extending parallel to the largest outer surface of the smallest cuboid, which completely surrounds the object. Preferably, the at least one heating element extends along the main extension of the windscreen unit in a serpentine, saw tooth shape, meander shape or the like. Preferably, at least one heating element is configured with an at least substantially rectangular outer contour in a cross section perpendicular to its main extension. Preferably, the at least one heating element is designed 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.

Advantageously, the heating element is provided for carrying out a tempering of the at least one wiping lip at least to a temperature at which the wiping process can be carried out, in particular at which a flexibility of the wiping lip rubber for the wiping process is ensured, in particular optimized. In particular, cleaning of the vehicle panes can thereby be accelerated and/or improved, in particular at outside temperatures below 0 ℃ and/or below the freezing point of water. Due to the heating element, the wiper blade device may fulfill at least one advantageous heating function.

The electrical supply line preferably extends from the vehicle to the wiper arm adapter at least over a substantial part of the main extension of the wiper arm. An electrical supply line is provided for coupling with the at least one heating element. The electrical supply line is provided for conducting electrical current at least partially from/into the current generator, in particular a battery, a generator, for example a light generator (Lichtmaschine) and/or a direct current generator (Dynamo), to/into the wiper blade device. Preferably, the 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.

A "functional joint" is preferably to be understood as an element which is to establish an electrically conductive connection between two electrical conductors and/or a water-conducting connection between two water-conducting elements. Preferably, the at least one functional joint is configured for a plug connection with at least one adapter joint of the wiper arm adapter. Preferably, the at least one functional connector and the at least one adapter connector, in the installed state, form a passage within the plug connection, which establishes an electrically conductive connection between the heating element and the electrical supply line and/or a water-conducting connection between the wiping liquid supply line and the at least one wiping liquid channel.

By means of the configuration according to the invention of the wiper blade device, it is possible in particular to provide a wiper blade device which can be advantageously coupled. In particular, a wiper blade device can be realized which can be connected directly to the wiper arm adapter without a wiper blade adapter. In particular, it can be achieved by the configuration according to the invention of the wiper blade device that the wiper blade adapter is obsolete. In particular, this makes it possible to achieve an advantageously easy installation of the wiper blade device by eliminating an additional wiper blade adapter. The number of components can thus advantageously be kept small. Thereby, an advantageously compact and light wiper blade device may be provided in particular. Thereby, an advantageous coupling geometry can be achieved. This makes it possible to achieve an advantageously space-saving mounting of the wiper blade device and/or an advantageously space-saving transport. In addition, this makes it possible to achieve an advantageous transport handling of the wiper blade device. It is furthermore advantageously possible to automatically establish a mechanical connection of the wiper blade device to the wiper arm or simultaneously also to establish a fluidic and/or electrical connection between the wiper arm and the wiper blade device.

It is further proposed that the at least one connecting element is formed integrally with the at least one spoiler. This advantageously makes it possible to form a stable connecting element. A long service life of the connecting element can thereby advantageously be achieved. In particular, it is thereby possible to fasten the connecting element to the wiper arm adapter in the vicinity of the wiper arm.

It is further proposed that the at least one windshield unit comprises at least two windshield subunits, each of which has at least one spoiler subunit, at least one functional joint and at least one connecting element of a spoiler. The at least two windshield subunits are preferably configured in a similar manner to one another in their functional manner. At least two windshield subunits are preferably of the same size. The at least two windshield subunits preferably have a primary extension that is substantially the same size and a secondary extension that is substantially the same size. The at least two windshield subunits are preferably designed as mirror images of one another, in particular on mirror surfaces, which extend parallel 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 is formed, in particular in the installed state, by at least two mirror-image spoiler subelements of the windshield subunit, in particular on mirror surfaces, which extend parallel or perpendicular to the main extension plane of the windshield unit.

Preferably, the at least two connecting elements of the windshield unit are arranged in particular in the mounted state in mirror image of one another, in particular on a mirror surface, which extends parallel to a secondary extension plane extending perpendicularly to the main extension of the windshield unit. Preferably, at least two connecting elements are of similar, in particular equally large, design to one another. Preferably, the at least two functional joints of the windshield unit are arranged in particular in the installed state in mirror image of one another, in particular on a mirror surface, which extends parallel to a secondary extension plane extending perpendicularly to the main extension of the windshield unit. Preferably, at least two functional joints are configured similarly, in particular equally large, to one another and/or identically in their functional manner. An advantageous, in particular continuous, coupling process with the wiper arm adapter can be realized by the windshield unit by means of a two-part construction. In particular, the two-part design makes it possible to advantageously reach the connecting element on each windshield subunit.

It is furthermore proposed that the at least two windshield subunits each have a coupling region in the end region of their main extension, in which coupling region at least one functional joint of each windshield subunit is arranged, the coupling regions being provided for direct, releasable coupling with the coupling regions of the wiper arm adapter. The coupling region is preferably a region of the windshield subunit which, in the installed state, has a contact with the at least one wiper arm adapter. The coupling region of each of the at least two windshield subunits is preferably configured without a respective spoiler subunit of each windshield subunit, in particular without a concave outer surface of the respective spoiler subunit. Preferably, the at least two coupling regions are configured similarly to one another, in particular equally large, and/or in their functional manner and/or in the same number of functional connections located in the coupling regions. Preferably, the at least two coupling regions are constructed and/or arranged, in particular in the mounted state, mirror-like to one another, 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, the common mounting region (which comprises at least two coupling regions) can be achieved in particular by pushing the windshield subunits together along the spring rails in opposite directions parallel to the main direction of extension of the windshield subunits.

Furthermore, it is proposed that the connecting elements of the at least two windshield subunits each extend partially from the respective spoiler subunit in the main extension direction of the spoiler subunit into the respective coupling region of the at least two windshield subunits. Preferably, the connecting element is provided for establishing a load-bearing connection between the wiper arm adapter and the wiper blade device. A "load-bearing connection" is preferably understood to mean a connection which produces at least 50%, preferably at least 70%, of the holding force between two connected objects. Preferably, the connecting element extends in the main extension direction of the spoiler by a maximum of 3cm, preferably a maximum of 1cm, particularly preferably a maximum of 0.5cm, into the coupling region of the respective windshield subunit. Preferably, the at least two connecting elements each extend equally far into the respective coupling region of each windshield subunit. An advantageous stability of the connection between the windscreen unit and the wiper arm adapter can thereby be achieved.

It is also 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 the side opposite the at least one spoiler subunit of the at least one windshield subunit. It is thereby advantageously possible to achieve that the wiping lip of the wiping blade device can be heated in particular to a temperature which is favorable for the wiping process.

It is furthermore proposed that the at least one windshield unit has at least one groove extending in the main direction of extension of the windshield unit on the side facing away from the at least one spoiler element, in which groove a heating element is arranged. The at least two windshield subunits each have at least one groove, wherein the at least one groove is arranged on a side of the windshield subunit opposite the at least one spoiler subunit of each of the at least two windshield subunits. Preferably, the at least one groove is provided for accommodating the at least one spring rail and/or the wiper strip. Preferably, the channel has a portion arranged to at least partially receive at least one of the wiping strips. The portion of the channel configured to receive the heating element is configured to partially receive the at least one scraping strip. Preferably, the respective groove is materially bounded at least in part by the respective windshield subunit in the main direction of extension. Preferably, each groove has at least one side face which is not delimited by the windscreen sub-unit. Preferably, in the installed state, the windshield subunit part wraps around the spring rail along the main extension of the at least one spring rail.

An advantageous arrangement of the spring rail, the wiper strip and the wind deflector unit can thereby be achieved. This ensures an advantageously safe functionality of the wiper blade device.

It is furthermore proposed that the at least two windshield subunits each have at least one wiping liquid channel which is arranged at least partially, in particular completely, in each case in the spoiler subunit 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 primary extension of the spoiler of each windshield subunit. This makes it possible to achieve an advantageous distribution of the wiping liquid over the glass to be wiped. In particular, a more targeted distribution of the wiping liquid can be achieved. In particular, a wiping blade device can be constructed which saves wiping liquid.

It is furthermore proposed that the at least two windshield subunits have in each case 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 the wiping liquid channel to the wiping liquid supply line. Preferably, each windshield subunit comprises 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 comprises at least one, in particular exactly one, second functional connection which is provided for connecting the wiping liquid channel with the wiping liquid supply line. Preferably, each of the at least two windshield subunits comprises at least three, in particular exactly three, functional connections. Preferably, at least three functional connections are each arranged in the coupling region of the respective windshield subunit. This advantageously makes it possible to carry out a wiping process that is temperature-controlled and supported by the wiping liquid. Advantageously, the coupling of the wiper blade device to the wiper arm may be achieved without a wiper blade adapter, the coupling allowing for temperature regulation and supporting of the wiping process by the wiping liquid.

Furthermore, a scraper system is proposed, comprising a scraper arm, a scraper blade device and a scraper arm adapter, wherein the scraper arm adapter is fixedly, in particular in a loss-proof manner, connected to the scraper arm and is provided for releasable connection to the scraper blade device, and the scraper arm adapter comprises at least one adapter function connection for coupling with at least one function connection of at least one windshield unit. Preferably, the scraping arm guides at least one scraping liquid supply line over at least a major 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 provided for accommodating at least one connecting element of a respective windshield subunit. Preferably, the wiper arm adapter has at least two, preferably at least four, in particular exactly four first adapter function connections for connecting the electrical supply line to at least one, preferably at least two, first function connections of the windshield subunit, which are in particular connected to at least one heating element. Preferably, the wiper arm adapter has at least two, in particular exactly two, second adapter function connections for connecting the wiping liquid supply line with at least one second function connection of the windshield subunit, which second function connection is in particular fluidically connected with at least one wiping liquid channel of the respective windshield subunit. An uncomplicated electrical and fluidic coupling of the wiper arm adapter to the wiper blade device can advantageously be achieved.

Furthermore, a method for mounting a scraper system is proposed. In at least one method step, the at least one spring rail is connected to the at least one wiper strip by 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 plugged with its functional joint onto a functional joint in the coupling region of the windshield subunit until the connecting element of the respective windshield subunit latches into the recess of the wiper arm adapter and/or into the recess. Preferably, in at least one method step, the functional connectors are fluidically and/or conductively connected. This makes it possible to achieve an advantageously simple and short installation process with a small number of components.

The wiper blade device according to the invention should not be limited to the above-described applications and embodiments. In particular, the wiper blade device according to the invention can have a number which is different from the number mentioned therein of the individual elements, components and units in order to satisfy the functional manner described here.

Drawings

Further advantages are obtained from the following description of the figures. Embodiments of the invention are shown in the drawings. The figures, description and claims contain a number of combinations of features. Suitably, the skilled person will also consider these features individually and generalise them to meaningful further combinations.

Wherein:

fig. 1 shows a scraper system with a scraper blade device, a scraper arm and a scraper arm adapter according to the invention in a schematic view;

fig. 2 shows in a schematic exploded view a wiper blade apparatus, a wiper arm and a wiper arm adapter according to the present invention;

fig. 3 shows a wiper arm and a wiper arm adapter of the wiper system in a schematic view;

fig. 4 shows a windscreen unit of the wiper blade device according to the invention in a schematic view;

fig. 5 shows a wiper arm and a wiper arm adapter of the wiper system in a schematic view;

fig. 6 shows a windscreen subunit of a windscreen unit of the wiper blade device according to the invention in a schematic view;

fig. 7 shows a schematic transparent illustration of a windshield subunit and a heating element of a wiper blade device according to the invention;

fig. 8 shows a method for mounting a scraper system in a schematic view.

Detailed Description

Fig. 1 shows a wiper blade apparatus 10. The wiping blade device 10 is formed by a wiping blade. The wiper blade apparatus 10 is configured for coupling with a wiper arm. The wiping blade device 10 comprises at least one wiping strip 14. The wiping strip 14 comprises at least one wiping base and a wiping lip. The wiping base body and the wiping lip are designed in a continuous, in particular one-piece, manner. The wiper blade apparatus 10 includes at least one spring rail 46, 46'. The wiper blade apparatus 10 includes two spring rails 46, 46'. The wiping base of the wiping strip 14 forms two spring rail receptacles. The spring rail receptacles are each formed by an externally disposed groove 44. The spring rail receptacle is designed to receive two spring rails 46, 46'. The wiping blade device 10 has a windscreen unit 12 at least partly accommodating a wiping strip 14. A windshield unit 12 is arranged on the side of the wiping basic body facing away from the wiping lip. The windshield unit 12 has at least one spoiler 16. The windshield unit 12 furthermore 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 windscreen unit 12 has two connecting elements 30, 30'. The two connecting elements 30, 30' are formed integrally with the spoiler 16. The connecting element 30, 30' is provided for direct, releasable coupling with at least one wiper arm adapter 34 which is fixedly, in particular loss-proof, coupled with the wiper arm 32.

The windscreen unit 12 comprises at least two windscreen subunits 26, 26'. The windshield subunits 26, 26 'each have at least one spoiler subunit 28, 28' of the spoiler 16. The spoiler subunit 28, 28 ' of the respective windshield subunit 26, 26 ' is arranged on the side facing away from the spring rail 46, 46 '. The spoiler sub-element 28, 28' has a concave outer surface.

At least two windshield subunits 26, 26' each have at least one wiping liquid channel 22. The wiping liquid channel 22 is arranged at least partially, in particular completely, inside a spoiler subelement 28, 28 'of each of the at least two windshield subunits 26, 26' (see fig. 7).

The at least two windshield subunits 26, 26 'each have at least one groove 44 on the side facing away from the at least one spoiler subunit 28, 28' and extending in the main direction of extension of the windshield unit 12. The wiper blade apparatus 10 comprises at least one heating element 18, 18' arranged on the windscreen unit 12. The heating elements 18, 18' are disposed in the slots 44. The heating element 18, 18 ' extends along at least one of the windshield subunits 26, 26 ' on the side opposite the spoiler subunit 28, 28 '. The at least one heating element 18, 18 'extends along a serpentine line at least over a major extension of the windshield subunit 26, 26'.

The windshield subunits 26, 26 'each have at least one of the connecting elements 30, 30'. The connecting element 30, 30 'of each windshield subunit 26, 26' is formed as a projection on each spoiler subunit 28, 28 'in the main direction of extension of the spoiler subunit 28, 28'. The connecting element 30, 30 ' of the windshield subunit 26, 26 ' projects partly from the respective windshield subunit 26, 26 ' and is arranged partly in the wiper arm adapter 34 in the mounted state (see fig. 5 and 6).

Furthermore, the windshield unit 12 has at least one functional connection 40, 40 ', 42' ''. The windshield unit 12 has a plurality of functional connections 40, 40 ', 42' ''. The windshield unit 12 has, for example, exactly six

functional connections

40, 40 ', 42 ', 42 ″ '. The

functional connections

40, 40 ', 42', 42 "'of the windshield unit 12 are provided for connecting the heating elements 18, 18' with the electrical supply line 20 and/or for connecting the wiping liquid channel 22 of the windshield unit 12 with the wiping liquid supply line 24 (see fig. 7). A plurality of first

functional connections

42, 42 ', 42 "' of the

functional connections

40, 40 ', 42', 42" 'are provided for connecting the heating elements 18, 18' with the electrical supply line 20. A plurality of second functional connections 40, 40 ' of the

functional connections

40, 40 ', 42 ', 42 "' are provided for connecting the wiping liquid channel 22, 22 ' of the windscreen unit 12 with the wiping liquid supply line 24.

The windshield subunits 26, 26 ' each have at least one

functional connection

40, 40 ', 42 ', 42 "' and each have at least one connection element 30, 30 '.

The at least two windshield subunits 26, 26 ' each have at least one first

functional connection

42, 42 ', 42 "' and at least one second functional connection 40, 40 ' which connect the heating element 18, 18 ' with the electrical supply line 20 and/or the wiping liquid channel 22 with the wiping liquid supply line 24. The windshield subunits 26, 26 ' each have two first

functional connections

42, 42 ', 42 "'. The windshield subunits 26, 26 'each have two first

functional connections

42, 42', 42 "'which connect the heating elements 18, 18' to the electrical supply line 20. The first functional connections 42, 42 ' ' ' are substantially cuboid. The first functional connections 42, 42 '' 'are arranged side by side, in particular in a row, parallel to the wiping direction 48, 48'. The first

functional connections

42, 42 ', 42 "' are each formed by an electrical plug connector. The first functional joint 42, 42 ', 42 "' of the windshield subunit 26, 26 'partially protrudes from the respective windshield subunit 26, 26' and is partially arranged in the wiper arm adapter 34 in the mounted state (see fig. 5 and 6).

The windshield subunits 26, 26 'have a second functional connection 40, 40', respectively, which connects one of the wiping liquid channels 22 with the wiping liquid supply line 24. The second functional connection 40, 40 ' is basically designed as a combination of a cylinder 58, 58 ' and a rectangular parallelepiped base 56, 56 '. The second functional joint 40, 40 ' of the windshield subunit 26, 26 ' partially protrudes from the respective windshield subunit 26, 26 ', in particular further than the first functional joint 42, 42 ', 42 "', and is arranged partially in the wiper arm adapter 34 in the mounted state (see fig. 5 and 6). The feet 56, 56 'project further from the respective windshield subunit 26, 26' than the first functional joint 42, 42 ', 42 "'. The second functional connections 40, 40' are each formed by hose couplings, in particular plug couplings. The

functional joints

40, 40 ', 42', 42 "'project from the respective windshield subunit 26, 26' in the same direction.

At least two windshield subunits 26, 26 'each have a coupling region 36, 36' in the end region of their main extension. In the coupling region 36, 36 'of each windshield subunit 26, 26' there is arranged at least one

functional connection

40, 40 ', 42', 42 "'of each windshield subunit 26, 26'. The coupling areas 36, 36' are provided for direct, releasable coupling with the coupling areas 38 of the wiper arm adapter 34. The connecting elements 30, 30 'of the at least two windshield subunits 26, 26' each extend partially from the respective spoiler element 28, 28 'in the main extension direction of the spoiler element 28, 28' into the respective coupling region 36, 36 'of the at least two windshield subunits 26, 26'. As shown in fig. 4, in the mounted state, the coupling regions 36, 36' form a common mounting region for coupling with the wiper arm adapter 34.

A squeegee system 50 having a squeegee arm 32 and a squeegee blade apparatus 10 is schematically illustrated in fig. 1 and 2. The scraper system 50 has a scraping liquid supply line 24 and two electrical supply lines 20. The wiper arm 32 guides the wiping liquid supply line 24 over a large part of its main extension. The wiper arm 32 guides at least two electrical supply lines 20 over at least a large part of its main extension.

The scraper system 50 comprises a scraper arm adapter 34, which is fixedly, in particular loss-proof, connected to the scraper arm 32. The wiper arm adapter 34 is provided for releasable connection with the wiper blade apparatus 10. The wiper arm adapter 34 has recesses 64, 64 ', which in the mounted state of the wiper blade device 10 on the wiper arm 32 are provided for receiving the connecting elements 30, 30 ' (fig. 3 and 5) of the windshield subunits 26, 26 '. The recesses 64, 64 'are each formed by a latching recess into which the connecting elements 30, 30' can be latched in order to establish a form-locking connection. The connecting elements 30, 30' are used to secure the wiper blade apparatus 10 to the wiper arm adapter 34.

The wiper arm adapter 34 has at least one adapter function joint 52, 52 ', 54', 54 "'for coupling with at least one function joint 40, 40', 42 ', 42"' of at least one windshield unit 12. The wiper arm adapter 34 has a number of adapter function joints 52, 52 ', 54', 54 "'corresponding to the function joints 40, 40', 42 ', 42"' of the windshield unit 12. The wiper arm adapter 34 has four first

adapter function connections

54, 54 ', 54 "' for connecting the electrical supply line 20 with the two

first function connections

42, 42 ', 42"' of the windshield subunit 26, 26 ', which are in particular connected with the at least one heating element 18, 18'. The first adapter function connectors 54, 54 ' ' ' are identically constructed. The first

adapter function connection

54, 54 ', 54 ″' is designed as a recess in the wiper arm adapter 34 with an input end having a rectangular outer contour. The input end of the first adapter function connection 54, 54 '' 'is designed to receive the first function connection 42, 42' '' in a form-fitting manner.

The wiper arm adapter 34 has two second adapter function connections 52, 52 ' for connecting the wiping liquid supply line 24 to in each case one second function connection 40, 40 ' of a windshield subunit 26, 26 ', which in particular fluidically connects to at least one wiping liquid channel 22, 22 ' of the respective windshield subunit 26, 26 '. The second adapter function connectors 52, 52' are identically constructed. The second adapter function connection 52, 52' is formed in part as a recess in the wiper arm adapter 34 with an input end having a circular outer contour. The input of the second

adapter function connection

52, 52 ″ is designed to receive the second function connection 40, 40' in a form-fitting manner. In addition, the wiper arm adapter 34 has a rectangular parallelepiped base recess 66, 66 'for receiving the base 56, 56' of the second functional connection 40, 40 'of the windshield subunit 26, 26' in a partially form-fitting manner. The base cutouts 66, 66' are arranged in two corners on opposite sides along the main extension of the wiper arm adapter 34 on the sides in the coupling region 38 of the wiper arm adapter 34.

A method for installing the scraper system 50 is shown in fig. 8. In at least one method step, in particular a displacement step 60, the spring rail 46 is connected to the wiper strip 14 via a spring rail receptacle, in particular via the groove 44. In at least one method configuration, in particular in a displacement step 60, the windshield subunit 26, 26' is completely displaced from different, in particular opposite, end regions of the main extension of the spring rail 46 and/or is inserted onto at least one spring rail 46. In at least one method step, in particular in a fastening step 62, the wiper arm adapter 34 is inserted with its adapter function joint 52, 52 ', 54 ', 54 "' onto the function joint 40, 40 ', 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 ' latches onto and/or into the recess 64, 64 ' of the wiper arm adapter 34. Preferably, in at least one method step, in particular in the fastening step 62, the functional joint 40, 40 ', 42 ', 42 ″ ' is fluidically and/or electrically conductively connected to the adapter functional joint 52, 52 ', 54 ', 54 ″.

Claims

1. Wiper blade device having at least one wiper strip (14) and at least one windshield unit (12) which at least partially accommodates the wiper strip (14) and which has at least one spoiler (16) and at least one functional connection (40, 40 ', 42 ', 42 "') which is provided for connecting a heating element (18, 18 ') to an electrical supply line (20) and/or a wiping liquid channel (22) of the windshield unit (12) to a wiping liquid supply line (24), characterized in that the at least one windshield unit (12) has at least one connecting element (30, 30 ') which is connected to the at least one spoiler (16) and which is provided for directly connecting to at least one wiper arm adapter (34) which is fixedly, in particular loss-proof, coupled to the wiper arm (32), Can be coupled releasably.

2. The wiper blade apparatus according to claim 1, characterized in that the at least one connecting element (30, 30') is constructed in one piece with the at least one spoiler (16).

3. The wiper blade device according to claim 1 or 2, characterized in that the at least one windshield unit (12) has at least two windshield subunits (26, 26 ') each having at least one spoiler subunit (28, 28') of a spoiler (16), at least one functional joint (40, 40 ', 42', 42 "') and at least one connecting element (30, 30').

4. A wiper blade device according to claim 3, characterized in that at least two windshield subunits (26, 26 ') each have a coupling region (36, 36') in the end region of their main extension, in which coupling region at least one functional joint (40, 40 ', 42', 42 "') of each windshield subunit (26, 26') is arranged, which coupling regions are provided for direct, releasable coupling with a coupling region (38) of the wiper arm adapter (34).

5. The wiper blade device according to claim 4, characterized in that the connecting elements (30, 30 ') of at least two windshield subunits (26, 26') each extend partially from the respective spoiler subunit (28, 28 ') into the respective coupling region (36, 36') of at least two windshield subunits (26, 26 ') in the main extension direction of the spoiler subunit (28, 28').

6. A wiper blade apparatus according to claim 3, characterized by at least one heating element (18, 18 ') arranged on the windshield unit (12) which extends along at least one of the at least two windshield subunits (26, 26') on the side opposite to the at least one spoiler subunit (28, 28 ') of the at least one of the windshield subunits (26, 26').

7. The wiper blade device according to claim 6, characterized in that at least two windshield subunits (26, 26 ') each have at least one groove (44) on the side facing away from at least one spoiler subunit (28, 28') extending in the main direction of extension of the windshield unit (12), in which groove a heating element (18) is arranged.

8. A wiper blade device according to claim 3, characterized in that at least two windshield subunits (26, 26 ') each have at least one wiping liquid channel (22, 22') which is arranged at least partially, in particular completely, in each case in the spoiler subunit (28, 28 ') of each of the at least two windshield subunits (26, 26').

9. A wiper blade apparatus according to any one of the preceding claims, characterized in that at least two windshield subunits (26, 26 ') each have at least one first functional joint (42, 42', 42 "') and at least one second functional joint (40, 40') connecting the heating element (18) with the electrical supply line (20) and/or the wiping liquid channel (22) with the wiping liquid supply line (24).

10. Scraper system with a scraper arm (32) and a scraper blade device (10) according to one of the preceding claims, characterized by a scraper arm adapter (34) which is fixedly, in particular loss-proof, connected with the scraper arm (32) and is provided for releasable connection with the scraper blade device (10), and which has at least one adapter function joint (52, 52 ', 54', 54 "') for coupling with at least one function joint (40, 40', 42 ', 42"') of at least one windshield unit (12).

11. Method for mounting a scraper system (50) according to claim 10.