WO2016096453A1

WO2016096453A1 - Windscreen wiper device

Info

Publication number: WO2016096453A1
Application number: PCT/EP2015/078479
Authority: WO
Inventors: Martin Steinmetz; Michael Weiler
Original assignee: Robert Bosch Gmbh
Priority date: 2014-12-18
Filing date: 2015-12-03
Publication date: 2016-06-23
Also published as: CN107000694A; FR3030413A1; CN107000694B; FR3030413B1; DE102014226401A1

Abstract

The present disclosure relates to a windscreen wiper device (100, 200, 300, 400) for a vehicle, in particular a motor vehicle, comprising a wiper blade (2) having an elongate upper part (10), which is at least partially flexible, an elongate lower part (12), which is at least partially flexible, wherein the elongate lower part (12) comprises a first material, a plurality of connecting elements (18) for connecting the upper part (10) and the lower part (12), wherein the connecting elements (18) are spaced apart from one other along a longitudinal extent (8) of the wiper blade (2) and are attached to the upper part (10) and/or to the lower part (12) by means of a rotary joint (20), in particular wherein the connecting elements (18) are designed to enable a movement of the upper part (10) and of the lower part (12) relative to each other with a movement component along the longitudinal extent (8) of the wiper blade (2), and at least one stabilizing means (110, 210) composed of a second material.

Description

Description windscreen wiper device

The disclosure relates to a windscreen wiper device for a vehicle, in particular a motor vehicle, and to a method for producing a windscreen wiper device.

State of the art

Windscreen wiper devices typically have a wiper arm or wiper lever, wherein a wiper blade, to which a wiper lip is attached, is moved on the window of a motor vehicle. The wiper arm is moved alternately between a first turning position and a second turning position. For this purpose, the wiper arm is connected via the drive shaft with a wiper motor. The windshield wiper device should impair as little as possible a field of vision of a driver, in particular when wiping, but without losing functionality. In addition, the wiper blade should exert a uniform and sufficient contact pressure (bearing force) on the windscreen of the vehicle over its length in order to allow a good wiping effect and to reduce or avoid a ringing.

In the improvement of windscreen wiper devices, there are also a number of boundary conditions that should be taken into account. These include the cost of manufacturing and the cost of production, the cost of materials, but also the properties of the windshield wiper device, in particular the function under a variety of conditions and longevity under a variety of conditions. When wiping devices for vehicles, it must be taken into consideration that the cost pressure constantly increases and that the vehicles can be used in a large number of climatic conditions, so that, for example, extreme temperature values occur permanently and / or with large fluctuations. Therefore, there is a need to further improve windshield wiper devices, particularly as little as possible to impair a driver's field of vision.

Disclosure of the invention

It is the object of the present disclosure to provide a windshield wiper device with which at least one or more of the abovementioned disadvantages are reduced or essentially do not occur.

This object is solved by the subject matter of the independent claims.

According to embodiments of the present disclosure, a windshield wiper device for a vehicle, in particular a motor vehicle, comprising a wiper blade, is specified. The wiper blade comprises an elongated upper part, which is designed to be at least partially bendable, an elongated lower part, which is configured at least partially bendable, wherein the elongate lower part comprises a first material, a plurality of connecting elements for connecting the upper part and the lower part, wherein the connecting elements along a Längserstre the wiper blade are spaced apart from one another and attached to the upper part and / or the lower part by means of a rotary joint, in particular wherein the connecting elements are designed to allow movement of the upper part and the lower part relative to each other with a movement component along the longitudinal extent of the wiper blade, and at least one stabilizing agent of a second material.

The windshield wiper device according to the present disclosure may be provided with small dimensions, whereby a driver's field of vision is little or not impaired. However, functionality and stability of the windshield wiper device are ensured in particular by the provision of the at least one stabilizing agent.

Preferred, optional embodiments, and particular aspects of the disclosure will be apparent from the dependent claims, the drawings, and the present description. Advantages of the disclosure

According to the embodiments described here, windscreen wiper devices, in particular fin-ray windscreen wipers for vehicle windows, can be produced in a particularly favorable manner and / or for a multiplicity of different fields of use. The present embodiments of the Fin-Ray windscreen wiping device allow in particular by the reinforcing means a compact dimensioning of the Scheibenwischvornchtung so that the field of view of the driver is little if not impaired. Functionality and stability can be guaranteed.

In some embodiments, the second material comprises a metal and / or carbon. Metal and carbon are characterized by a high degree of hardness and / or rigidity, whereby the at least one stabilizing agent gives the wiper blade high stability. The second material may be an organic sheet according to embodiments. Organic sheets are fiber-matrix semi-finished products. In particular, organic sheets can consist of a fiber fabric or a fiber fabric, which can be embedded in a thermoplastic matrix.

Typically, the at least one stabilizing agent comprises a flat strip, in particular a metal strip, a metal insert or an organic sheet. Thus, the wiper blade can be easily and inexpensively manufactured. According to some embodiments described herein, the at least one stabilizer comprises reinforcing fibers. For example, the reinforcing fibers may include or be carbon fibers or glass fibers. In other examples, the reinforcing fibers may comprise a mixture of carbon fibers and glass fibers. Thus, the wiper blade can be equipped with a high stability.

In some embodiments, which may be combined with other embodiments described herein, the at least one stabilizing agent is at least partially enclosed by the first material, and in particular encapsulated. Typically, the at least one stabilizing agent may be at least partially, and in particular completely, embedded in the first material. This can do that Wiper blade are made with the stabilizing agent in a simple manner, for example by injection molding.

According to some embodiments that may be combined with other embodiments described herein, the first material is selected from the group consisting of: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polylactate (PLA), polymethylmethacrylate (PMMA) ), Polycarbonate (PC), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS), polyetheretherketone (PEEK), and polyvinylchloride (PVC). Thus, the lower part can be easily and inexpensively manufactured.

In accordance with some embodiments that may be combined with other embodiments described herein, the windshield wiper device includes a wiper blade side fastener configured to be connected to a fastener on the vehicle. Typically, the at least one stabilizing agent may be arranged in a region of the wiper blade-side fastening part. Thus, a high stability can be provided in the region of attachment of the windshield wiper device to the fastening element, which, for example, can increase a service life of the windshield wiper device.

In some implementations, the at least one stabilizing means in the region of the wiper blade-side fastening part may have a recess or recess, for example a hole. The recess may be arranged for a passage of the fastener on the vehicle. Thus, a high stability can be provided in the region of attachment of the windshield wiper device to the fastening element, which can increase, for example, a service life of the windshield wiper device.

According to some embodiments that may be combined with other embodiments described herein, the windshield wiper device includes at least one spoiler disposed on the elongated top. The spoiler can ensure contact of the wiper blade, and in particular a wiper lip mounted on the wiper blade, with the windshield of the vehicle even when the wind blows. In particular, the spoiler can ensure a sufficient contact pressure of the wiper blade on the disk. Thus, a wiping effect can be improved and streaking prevented. According to embodiments of the disclosure, the spoiler has a cross section substantially perpendicular to the longitudinal extent of the wiper blade, wherein the cross section is symmetrical or asymmetrical. Typically, the cross section has a tapered or concave portion. By virtue of the symmetrical or asymmetrical cross-section and / or the bevelled or concave section, the spoiler can provide optimum support behavior on the pane, taking into account, for example, a wind direction of the airstream, the curvature of the pane, and / or a wiping direction of the windscreen wiper device.

According to some embodiments, which may be combined with other embodiments described herein, the at least one stabilizing means comprises at least one cover element attachable to at least one connecting element of the plurality of connecting elements. Typically, the at least one cover element at least partially covers a region between the elongated upper part and the elongate lower part. The at least one cover element can improve a stability of the wiper blade. According to another aspect of the present disclosure, a method for producing a windshield wiper device described above is disclosed, comprising injecting the at least one stabilizer with the first material, for example by means of injection molding. As a result, the wiper blade can be produced easily and stably. In particular, the lower part and the at least one stabilizing agent can be produced in a simple manner with reduced workload.

Brief description of the drawings

Embodiments of the disclosure are illustrated in the figures and will be described in more detail below. Show it:

FIG. 1 is a schematic representation of a windshield wiper device according to embodiments of the present disclosure; FIG. 2 shows a schematic representation of a windshield wiper device according to further embodiments of the present disclosure,

FIGS. 3A and 3B show a schematic illustration of a windshield wiper device with a spoiler according to embodiments of the present disclosure,

FIGS. 4A and 4B show a schematic illustration of a windshield wiper device with a plurality of cover elements according to embodiments of the present disclosure,

FIG. 5A shows a schematic illustration of a windshield wiper device with a wiper blade according to embodiments of the disclosure in a basic position,

5B is a schematic representation of the windshield wiper device according to embodiments of the disclosure of Figure 5A in a position applied to a disc,

6A is a schematic representation of a windshield wiper device with a wiper blade according to further embodiments of the disclosure in a basic position,

6B is a schematic representation of the windshield wiper device according to embodiments of the disclosure of Figure 6A in a position applied to a disc,

FIG. 7 shows a schematic representation of a windshield wiper device with a wiper blade according to other embodiments of the disclosure in a basic position, and

FIG. 8 shows a schematic illustration of the windshield wiper device according to embodiments of the disclosure according to FIG. 7 in a position applied to a windshield.

Embodiments of the disclosure In the following, unless otherwise stated, the same reference numerals are used for the same and equivalent elements.

FIG. 1 shows a schematic illustration of a windshield wiper device 100 according to embodiments of the present disclosure.

According to embodiments, the wiper blade 2 has an elongated upper part 10 and an elongated lower part 12, which are designed to be at least partially bendable, the lower part 12 facing a pane 4 during operation of the windscreen wiper device. Further, a plurality of connecting elements 18 are provided for connecting the upper part 10 and the lower part 12, wherein the connecting elements 18 along a longitudinal extent 8 of the wiper blade spaced from each other and attached to the upper part 10 and / or the lower part 12 by means of a rotary joint. The connecting elements 18 are designed to allow movement of the upper part 10 and the lower part 12 relative to each other with a movement component along the longitudinal extent 8 of the wiper blade 2. Here, the connecting elements are connected to the upper part 10 at a respective upper connecting position and to the lower part 12 at a respective lower connecting position. For example, a rotary joint is provided at the connection positions. In a movement of the upper part 10 and the lower part 12 relative to each other, the distance of an upper connection position to a lower connection position on the same connection element does not substantially change, i. the distance is constant with deviations of, for example ± 1 mm, in particular ± 0.3 mm.

The windshield wiper device 100 further comprises at least one stabilizing agent 110 made of a second material.

Along the longitudinal extension 8 of the wiper blade 2, the distance between the upper part 10 and the lower part 12 starting from the wiper blade head is smaller, at least in areas of the longitudinal extension 8 of the wiper blade 2 or in a major part of the longitudinal extent 8 of the wiper blade 2, see Figures 6A, 6B , 7 and 8. Starting from the head end, the height of the wiper blade 2 runs in wedge-shaped areas or becomes smaller in regions of the longitudinal extent 8. For example, according to embodiments, for a plurality of the connecting elements 18, the length of the connecting elements 18 can be made available in such a way that the in the Near the wiper blade head provided connecting elements 18 are longer than those on the opposite side, ie at a connecting position of the wiper blade 2 along the longitudinal extent 8. According to embodiments, the wiper blade 2 comprises a wiper lip (not shown), which is arranged on the lower part 12 of the wiper blade 2 is. The wiper lip is typically located on the underside of the lower part 12 facing away from the upper part 10. The wiper lip can be set up to sit on the window of the vehicle for wiping. For reasons of clarity, the wiper lip is not shown in the figures.

The windshield wiper 100 according to the present disclosure may be provided with small dimensions, whereby a driver's field of vision is little or not impaired. However, a functionality and a stability of the wiper device 100 is ensured in particular by the provision of the at least one stabilizing means 110.

To minimize the driver's field of vision, the following relationship applies: B ^* X <L. B indicates the width of the windscreen wiper blade, L indicates the length of the windscreen wiper blade and the wiper blade, and X may be greater than 20, and in particular may be greater than or equal to 20, 25 or 30. Thus, a Scheibenwischvornchtung or a wiper blade with a length of greater than or equal to 35 cm should have a maximum width of about 1 .5 cm in order to affect the field of view as little as possible. In particular, the width may be equal to or less than one twentieth of the length. By means of the at least one stabilizing means, even with such dimensions, a stability of the windscreen wiping device or of the wiper blade can be ensured.

According to some embodiments that may be combined with other embodiments described herein, the first material is selected from the group consisting of: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polylactate (PLA), polymethylmethacrylate (PMMA) ), Polycarbonate (PC), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS), polyetheretherketone (PEEK), and polyvinylchloride (PVC). In particular, the lower part 12 may consist of one of the above materials. Thus, the lower part 12 can be easily and inexpensively manufactured. In some embodiments, the second material comprises a metal and / or carbon. Metal and carbon are characterized by a high degree of hardness or high rigidity, whereby the at least one stabilizing agent 110 gives the wiper blade 2 high stability and / or strength. The metal may be, for example, stainless steel, copper, aluminum or an alloy. The second material may be an organic sheet according to embodiments. Organic sheets are fiber-matrix semi-finished products. In particular, organic sheets may consist of a fiber fabric or a fiber fabric, which may be embedded in a thermoplastic matrix.

Typically, the at least one stabilizing agent 110 comprises a flat strip, in particular a metal strip, a metal insert or an organic sheet. The metal strip or insert may have a substantially rectangular shape and / or may be a plate. Thus, the wiper blade 2 can be easily and inexpensively manufactured.

In some embodiments, which may be combined with other embodiments described herein, the at least one stabilizing means 110 is at least partially enclosed by the first material, and in particular encapsulated. Typically, the at least one stabilizing agent 110 may be at least partially, and in particular completely, embedded in the first material. For example, the metal strip or the metal insert is at least partially embedded in the lower part 12 and / or is at least partially surrounded or encapsulated by the first material. Thus, the stabilizing agent 1 10 can be easily connected to the lower part 12.

In accordance with some embodiments that may be combined with other embodiments described herein, the windshield wiper device 100 includes a wiper blade side fastener configured to be connected to a fastener on the vehicle. The fastening element may for example be a drive shaft, which is driven by a motor.

Typically, the at least one stabilizing means 110 may be arranged in a region of the wiper blade-side fastening part. Thus, in the region of attachment of the windshield wiper device 100 on Befestigungsele- a high stability can be provided, which can for example increase a service life of the windshield wiper device 100.

In some implementations, the at least one stabilizing means 110 may have a recess or recess in the region of the wiper blade-side fastening part, for example a hole 12. The recess may be designed for a passage of the fastening element on the vehicle (eg a flat strap with "eye") In the region of attachment of the windshield wiper device 100 to the fastening element, a high stability can be provided, which can increase, for example, a service life of the windshield wiper device 100.

In some embodiments, the at least one stabilizing means 110 may provide reinforcement, such as a metal reinforcement, at a connection (fastener, shaft) for improved torque transfer.

According to some embodiments that may be combined with other embodiments, the at least one stabilizing means extends over at least part of a length of the base 12 in the longitudinal extent, in particular over at least 50%, over at least 80% or over 100%, ie in the Substantially over the entire length of the lower part 12. The extension over at least a substantial part of the longitudinal extent of the lower part 12, a high stability and strength can be provided. In accordance with another aspect of the present disclosure, a method of making the windshield wiper according to the embodiments described herein is provided. The method comprises overmolding the at least one stabilizing agent with the first material, for example by means of injection molding. As a result, the wiper blade can be produced in a simple and stable manner. In particular, the lower part and the at least one stabilizing agent can be produced in a simple manner with reduced workload.

FIG. 2 shows a schematic representation of a windshield wiper device 200 according to further embodiments of the present disclosure. According to some embodiments described herein, the at least one stabilizer 210 comprises reinforcing fibers. For example, the reinforcing fibers may comprise carbon fibers or glass fibers. In other examples, the reinforcing fibers may comprise a mixture of carbon fibers and glass fibers. Thus, the wiper blade 2 can be equipped with a high stability. The reinforcing fibers may for example be embedded or inserted in the lower part 12 or in the first material.

FIGS. 3A and 3B show a schematic representation of a windshield wiper device 300 with a spoiler 310 according to embodiments of the present disclosure. FIG. 3A shows a side view of the windshield wiper device 300, and FIG. 3B shows a sectional view of the windshield wiper device 300 along the line A-A in FIG. 3A. According to some embodiments that may be combined with other embodiments described herein, the windshield wiper device 300 includes at least one spoiler 310 disposed on the elongate top 10. The spoiler 310 can ensure contact of the wiper blade 2, and in particular a wiper lip mounted on the wiper blade 2, with the windshield of the vehicle even when the wind is moving. In particular, the spoiler 310 can ensure a sufficient contact pressure of the wiper blade 2 on the disk. Thus, a wiping effect can be improved and streaking prevented.

According to embodiments of the disclosure, the spoiler 310 has a cross section substantially perpendicular to the longitudinal extent 8 of the wiper blade 2, the cross section being symmetrical or asymmetrical. Typically, the cross-section is substantially a tapered or concave portion. The spoiler 310 may be symmetric or asymmetrical with respect to an axis 315. The axis 315 may be substantially perpendicular to the longitudinal extent 8 of the wiper blade 2. By virtue of the symmetrical or asymmetrical cross-section, the spoiler 310 can provide an optimum contact pressure to the disk, taking into account, for example, a wind direction of the wind, the curvature of the disk, and / or a wiping direction of the windshield wiper device 300. The spoiler 310 typically has the tapered or concave portion. The chamfered or concave portion may be an inflow surface. The inflow surface may be designed such that during operation of the wiper blade 2 it faces the main flow direction of the wind passing through the windshield. The spoiler 310 can thus improve a contact behavior of the wiper blade 2, in particular at high driving speeds.

Typically, the spoiler 310 is formed of hard plastic, in particular of thermoplastic or thermosetting plastic. Also, the spoiler 310 and the top 10 may be the same material. The spoiler 310 and / or the upper part 10 can be formed for example by extrusion. Thereby, the spoiler 310 can be easily and stably manufactured. According to embodiments, at least the upper part 10 and the spoiler 310 are formed integrally or integrally. As a result, the spoiler 310 and the upper part 10 can be produced in a simple manner with reduced workload.

FIG. 4A shows a schematic representation of a windshield wiper device 400 with a cover element 410 according to embodiments of the present disclosure. FIG. 4B shows the cover element 410 of FIG. 4A.

According to some embodiments that may be combined with other embodiments described herein, the at least one stabilization means comprises at least one cover element 410 attachable to at least one connection element 18 of the plurality of connection elements 18. Typically, the at least one cover element 410 at least partially covers a region between the elongated upper part 10 and the elongated lower part 12. The region between the elongated upper part 10 and the elongated lower part 12 may be a lateral region of the windshield wiper device 400 and / or may comprise an elongated side surface of the windshield wiper device 400. The elongated side surface may extend substantially along the longitudinal extension 8. The at least one cover element 410 ensures stability of the wiper blade 2.

In typical embodiments, a plurality of cover elements 410 may be provided which blind-cover the connecting elements 18 (also referred to as "connecting webs") (eg, over-slipping) Cover element 410 may be formed as overlapping scales. The at least one cover element 410 may have a substantially circular or oval shape. In some implementations, the cover member 410 includes a cover plate 412. The top panel 412 may be configured to at least partially cover the area between the elongated top 10 and the elongated bottom 12. Typically, the cover member 410 may include a mounting device 414, such as a clip or clip closure, on one side of the cover plate 412. Thus, the cover element 410 can be mounted in a simple manner on the wiper blade 2.

In some embodiments, the first material and the second material may be the same, particularly if the at least one stabilizing means comprises the cover member 410 adhered to the connection member 18. For example, the lower part 12 and the cover element 410 can be made of the same material, in particular of the first material.

In the following, aspects of an exemplary windshield wiper device will be described, for which the embodiments of the windshield wiper device described herein are particularly advantageous. In order to provide the "fin ray" effect explained in more detail below with reference to FIGS. 5A, 5B, 6A, 6B, 7 and 8, the connecting elements 18 are designed, in particular, to move around an associated connecting point 20, in order to move the upper part 10 and of the lower part 12 relative to one another with a movement component along the longitudinal extension 8 of the wiper blade 2. The embodiments of the disclosure, and in particular the stabilizing means, can be used for windshield wipers (eg FIGS. 5A and 5B) and rear wipers (FIGS. 6A, 6B, 7 and 8). be used.

FIG. 5A shows a schematic illustration of a windshield wiper device with the wiper blade 2 according to embodiments of the disclosure in a basic position. FIG. 5B shows a schematic illustration of the windshield wiper device according to embodiments of the disclosure according to FIG. 5A in a position applied to a windshield 4. FIGS. 5A and 5B show the wiper blade 2 with the longitudinal extension 8, which extends substantially between connection positions 14 and 16. Such an arrangement is often used for windshield wipers. According to embodiments, the windshield wiper device may be a windshield wiper device or a windshield wiper.

5A and 5B show schematic representations of a wiper blade 2 in a basic position (FIG. 5A) and in a position applied to the window 4 (FIG. 5B) according to embodiments of the windscreen wiper device of the disclosure. The wiper blade 2 serves to wipe the window 4 of the vehicle, which is for example a motor vehicle, in particular a car. Usually, this is the wiper blade 2 attached to a wiper arm, which is driven for wiping by means of a motor. For this purpose, the wiper blade 2 on a holder 6, to which it can be attached to the windshield wiper arm. The wiper blade 2 is located in the figure 4A in a basic position in which it is at least partially lifted from the disc 4. The wiper blade 2 has the longitudinal extension 8 and has the elongated upper part 10 and the likewise elongated lower part 12. The longitudinal extent of the upper part 10 and the lower part 12 essentially correspond to the longitudinal extent 8 of the wiper blade 2.

The at least one stabilizing means may be provided on or in the lower part 12, and / or may be attached or mounted on the connecting elements 18. In particular, the at least one stabilizing agent may be designed according to the embodiments described here.

Both the upper part 10 and the lower part 12 are bendable beams or can be designed as bendable beams, which are each embodied in one piece in FIGS. 5A and 5B. This allows a particularly stable construction. It is also possible to design only one part of the upper part 10 and / or of the lower part 12 in a bendable manner. Furthermore, it is alternatively possible, the upper part 10 designed in two parts, in which case one end of the two parts of the two-part upper part 10 are then attached to the holder 6.

According to some embodiments, which may be combined with the other embodiments described herein, a material is used for the upper part 10 and / or the lower part 12, which has a modulus of elasticity, which in a Range between 0.005 kN / mm ² and 0.5 kN / mm ² , in particular 0.01 kN / mm ² and 0.1 kN / mm ² , is. This allows a suitable bending ability of the upper part 10 and the lower part 12. Together with a suitably designed cross-sectional area of the upper part 10 and of the lower part 12, this results in an optimal flexural rigidity. The top 10 and the bottom 12 are arranged to face each other. Both ends of the upper part 10 are fixedly connected to outer connecting positions 14 and 16, each having one end of the lower part 12. Otherwise, the upper part 10 and the lower part 12 are spaced apart from each other. The upper part 10 and the lower part 12 are connected to each other by the connecting elements 18. In particular in the basic position of the wiper blade 2, these run approximately transversely to the longitudinal extension 8 of the wiper blade 2. The connecting elements 18 are fastened to mutually facing inner longitudinal sides of the upper part 10 and of the lower part 12 by means of rotary joints 20. The hinges 20 are here, for example, hinges. In particular, the hinges 20 may be formed as film hinges. This is particularly advantageous when upper part 10, lower part 12 and / or connecting elements 18 are made of a plastic material or coated with a suitable plastic material. According to typical embodiments described herein that may be combined with other embodiments described herein, a hinge is selected from the group consisting of: a hinge, a living hinge, a taper of the material to provide lower stiffness along a torsion axis, a hinge a rotation axis, a means for connecting the upper part 10 with the connecting element 18 or for connecting the lower part 12 with the connecting element 18, which allows the displacement of the lower part 12 with respect to the upper part 10 along the longitudinal extension 8, etc.

Embodiments in which the hinge is provided by a living hinge thus provide a very simple way to provide the hinges for a fin-ray wiper. According to typical embodiments, the film hinges have a high extensibility. This can be provided, for example, by a material selected from the group PP, PE, POM, and PA. Alternatively, the film hinges may be made of one or more materials selected from a group consisting of: TPE (Thermoplastic Elastomer), for example TPE-S, TPE-O, TPE-U, TPE-A, TPE-V and TPE-E.

The connecting elements 18 are spaced apart along the longitudinal extent of the wiper blade 2. The distances between each two adjacent connecting elements 18 are the same. But you can also be chosen differently. The distances are advantageously less than 50 mm, in particular less than 30 mm. As a result, a particularly high degree of flexibility of the windshield wiper device, in particular of its lower part 12, and good adaptation to the curvature and changes in curvature of the windshield 4 to be wiped can be ensured. In Figure 5A, a distance 22 is representative of the distances between each two connecting elements 18 shown. The connecting elements 18, in particular in the basic position of the wiper blade 2, are fastened to the lower part 12 such that their longitudinal axes extend at angles 26 to the lower part 12.

In FIG. 5A, a longitudinal axis 24 is shown by way of example for the longitudinal axes of the connecting elements 18 and an angle 26 is shown by way of example for the angle between the connecting elements 18 and the lower part 12. The distances between the upper part 10 and the lower part 12 are determined primarily by the lengths of the connecting elements 18. The lengths of the connecting elements 18 increase, starting from the two outer connecting positions 14, 16, to approximately those points at which the holder 6 attached to the upper part 10 begins. As a result, upper part 10 and lower part 12 form a double wedge in side view of the wiper blade 2 according to FIG. 5A, the tips of the two edges facing in opposite directions. The connecting elements 18 are designed kink-resistant.

The connecting elements 18 are connected to the upper part 10 at a respective upper connecting position and to the lower part 12 at a respective lower connecting position. For example, a rotary joint is provided at the connection positions. During a movement of the upper part 10 of the lower part 12 relative to one another, the distance between an upper connecting position and a lower connecting position on the same connecting element 18 does not change substantially, ie the distance is constant with deviations of, for example, ± 1 mm, in particular ± 0.3 mm , FIG. 5B shows a schematic representation of the wiper blade 2 according to FIG. 5A in a position applied to the pane 4. Since the disc 4 has a curvature, 4 contact pressure forces act on the lower part 12 when the wiper blade 2 is applied to the disc. Since the upper part 10 with the spoiler 310 and the lower part 12 are mounted on the upper part 10 and lower part 12 bendable beams and the connecting elements 18 rotatably are, the upper part 10 and the lower part 12 are mutually displaceable. As a result of the pressure forces acting from below on the lower part 12, the wiper blade 2 bends in the direction from which the compressive forces come, and applies itself precisely to the curvature of the disk 4.

In the illustration according to FIG. 5B, there is a small gap between the wiper blade 2 and the disk 4, which here only serves to clarify the disk 4 and the wiper blade 2 and which in reality largely does not exist when the wiper blade 2 is applied to the disk 4 is. Furthermore, typically located on the underside of the lower part 12 facing away from the upper part 10 is a wiper lip, which sits on the window 4 for wiping. For reasons of clarity, the wiper lip is not shown in FIGS. 5A and 5B.

A windshield wiper device according to embodiments described herein utilizes the effect of tail fins of certain fish, which do not dodge in the pressure direction at lateral pressure, but buckle in the opposite direction, d. H. in the direction from which the pressure comes. This principle is also referred to as a fin-beam principle or "fin-ray" principle, whereby a windshield wiper device according to the embodiments described herein has the advantage of improved adaptation to a windshield of a motor vehicle not formed bendable.

In Figure 5A, the wiper blade 2 is shown in its not applied to the disc 4 position such that the lower part 12 is formed substantially straight. According to still further embodiments, which can be combined with other embodiments, the lower part 12 is convex in the unloaded state, ie with a curvature which projects away from the upper part 10 in a middle region. The windshield wiper device according to the embodiments described here can typically be in contact with a disk 4 starting from the convex Shape of the lower part 12, then the corresponding concave shape of the lower part 12, which adapts to the disc 4, assume.

According to a further preferred embodiment, the plurality of connecting elements 18 may be connected to the upper part 10 at a plurality of upper connecting positions and to the lower part 12 at a plurality of lower corresponding connecting positions, wherein the distance between a first and second upper parts 10 and 12 is relatively small upper connection positions and a corresponding lower connection position, is substantially constant, in particular constant with a deviation of ± 1 mm. In this way, a power transmission between the upper part 10 and the lower part 12 can be provided, which allows a windshield wiper device which operates according to the finray principle. FIGS. 6A and 6B show schematic representations of a wiper blade 2 in a basic position (FIG. 6A) and in a position applied to the window 4 (FIG. 6B) according to other embodiments of the windscreen wiper device of the disclosure. The upper part 10 and the lower part 12 are fastened to a wiper blade-side fastening part 30. The windshield wiper device can be connected to the vehicle or to the drive shaft of a windshield wiper drive unit 32 (wiper motor) of the vehicle by means of the wiper blade-side fastening part 30, for example with a Quickfix attachment. Such a Quickfix attachment can connect the drive shaft of the windshield wiper device with the wiper arm 1 quickly releasably.

On the side opposite to the fastening part 30 along the longitudinal extent 8 of the windshield wiper device, the upper part 10 and the lower part 12 are connected at the connecting position 34. The upper part 10 and the lower part 12 are interconnected by connecting elements 18. The connecting elements 18 are configured such that the distance between the connecting position with the upper part 10 and the distance between the connecting position and the lower part 12 changes by a maximum of +/- 1 mm, in particular by a maximum of +/- 0.3 mm changes (for example Thermal expansion and / or tensile and compressive stress). The connecting elements 18 can thus be substantially non-elastic or the effect of the connecting elements 18 is based on their power transmission between the upper part 10 and lower part 12 and not on the elasticity thereof.

FIG. 6B shows a schematic representation of the wiper blade 2 according to FIG. 6A in a position applied to the pane 4. Since the disc 4 has a curvature, 4 contact pressure forces act on the lower part 12 when the wiper blade 2 is applied to the disc. Since the upper part 10 and the lower part 12 bendable beams and the connecting elements 12 are rotatably mounted on the upper part 10 and lower part 12, that is Upper part 10 and the lower part 12 against each other. As a result of the pressure forces acting from below on the lower part 12, the wiper blade 2 bends in the direction from which the compressive forces come, and applies itself precisely to the curvature of the disk 4.

By the construction of the embodiments described here takes place with a force on the lower part 12 (through the disc 4), a bending of the lower part 12 in the direction from which the force acts. This is provided by the connection of the upper part 10 and the lower part 12 at the connecting position 34, the shape, and by hinges 20 at the connection between the connecting elements 18 and the upper and lower part.

FIGS. 7 and 8 show schematic illustrations of a wiper blade 2 of a windshield wiper device for a vehicle, in particular for a motor vehicle, in a basic position (FIG. 7), ie in an unloaded state, and in a position (FIG. 8) applied to a window 4 according to FIGS Herein are described embodiments. The wiper blade 2 comprises the elongated upper part 10 and the elongated lower part 12, which are configured at least partially bendable. Furthermore, a plurality of connecting elements 18 are provided for connecting the upper part 10 and the lower part 12, wherein the connecting elements 18 are spaced apart along the longitudinal extension 8 of the wiper blade 2. The connecting elements 18 are designed to allow movement of the upper part 10 and the lower part 12 relative to one another with a movement component along the longitudinal extension 8 of the wiper blade 2. Furthermore, the connecting elements 18 are arranged relative to the lower part 12 so that in an unloaded state of the wiper blade 2, an angle at the respective longitudinal axes 24 of the connecting elements 18 relative to the lower part 12 at least partially along the longitudinal extent 8 of the wiper blade 2 changes, in particular continuously changed or monotonically or strictly monotonously changed.

In the wiper blade 2 shown in FIG. 7 in the unloaded state, the angles on the respective longitudinal axes 24 of the connecting elements 18 relative to the lower part 12, which change along the longitudinal extent 8 of the wiper blade 2, are indicated by a1, α2, a3, ... cm-1, marked on. In a loaded state of the wiper blade 2, i. in an applied to the disc 4 position, as shown by way of example in Figure 8, the angle to the respective longitudinal axes 24 of the connecting elements 18 relative to the lower part 12 change in comparison to the unloaded state. To express this, the angles at the respective longitudinal axes 24 of the connecting elements 18 relative to the lower part 12, which change along the longitudinal extension 8 of the wiper blade 2, in the wiper blade shown in Figure 8, which in a manner applied to the disc Position, denoted by α'1, a'2, a'3, ... a'n-1, a'n.

According to embodiments of the windscreen wiping device, which can be combined with other embodiments, the wiper blade 2 has at least one first region, in which the angle on the longitudinal axes 24 of the connecting elements 18 relative to the lower part 12 along the longitudinal extent 8 of the wiper blade 2 to a wiper blade end decreases, in particular monotonically, in particular strictly monotone, decreases. Furthermore, the wiper blade 2 can have at least a second region in which the angle on the longitudinal axes 24 of the connecting elements 18 increases relative to the lower part 12 along the longitudinal extent 8 of the wiper blade 2 to a wiper blade end, in particular monotonically, in particular strictly monotonously increases. According to embodiments, as illustrated by way of example in FIGS. 7 and 8, the second area of the wiper blade 2 in which the angle on the longitudinal axes 24 of the connecting elements 18 increases relative to the lower part 12 along the longitudinal extent 8 of the wiper blade 2 to a wiper blade end an inner position of the wiper blade, which is located in the vicinity of the fastening part 30 of the wiper blade 2. As a result, a windscreen wiping device can be provided, which allows a particularly good adaptation to the curvature of a disk 4. Furthermore, a largely uniform contact pressure of the windscreen wiping device on the windscreen 4 as well as a homogeneous force distribution of the windscreen wiping device can be provided, so that a high wiping quality is provided. According to embodiments of the wiper blade 2, which can be combined with other embodiments, the connecting elements 18, in particular in an unloaded state of the wiper blade 2, are fastened to the lower part 12 such that the longitudinal axes 24 of the connecting elements 18 extend at angles to the lower part 12, which are between a lower angular limit cmu and an upper limit cmo. According to embodiments, the lower angular limit cmu = 10 °, in particular cmu = 15 °, in particular anu = 20 ° and the upper angular limit ano = 80 °, in particular ano = 90 °, in particular ano = 100 °. This advantageously ensures a particularly good transfer of a force acting on the lower part 12 to the upper part 10.

According to embodiments of the windscreen wiper device, which can be combined with other embodiments, the connecting elements 18 are configured such that the distance between the upper part 10 and the lower part 12 changes at least partially along the longitudinal extent 8 of the wiper blade 2, in particular in a first area continuously reduced and continuously enlarged in a second area. The distance between the upper part 10 and the lower part 12 along the longitudinal extension 8 of the wiper blade 2 may also include a region in which the distance between the upper part 10 and the lower part 12 along the longitudinal extent 8 of the wiper blade 2 is substantially constant. The distance between the upper part 10 and the lower part 12 is greater on the fastening part 30 than on the opposite end, on which the connecting position 34 is located.

According to embodiments of the wiper blade 2, which can be combined with other embodiments, the inner (the fastening part facing) distance value is at least 15 mm, in particular at least 25 mm, in particular at least 35 mm. According to embodiments that can be combined with other embodiments, the outer distance value is at least 10 mm, in particular at least 12.5 mm, in particular at least 15 mm. According to embodiments which can be combined with other embodiments, the mean distance value is at least 7.5 mm, in particular at least 9 mm, in particular at least 12.5 mm. As exemplified in FIGS. 7 and 8, the connecting elements 18 are connected to the lower part 12 and / or the upper part 10 in an articulated manner in accordance with embodiments which can be combined with other embodiments. In particular, the connecting elements 18 are connected to the lower part 12 and / or the upper part 10 by means of a first film hinge 20. The first film hinge 20 may be integrally formed with the connecting element 18 and the upper part 10 and / or the lower part 12. The one-piece design of the film hinges allows a simple and inexpensive production. According to embodiments of the wiper blade, which may be combined with other embodiments described herein, the wiper blade comprises a first region having a first curvature ω <0 and a second region having a second curvature ω> 0. Furthermore, according to embodiments, the wiper blade may have a third region with a third curvature ω <0, the second region of the wiper blade having the second curvature ω> 0 between the first region having the first curvature ω <0 and the third region having the third curvature ω <0 is arranged, as shown by way of example in Figure 7. Thus, a windshield wiper device can be provided with which a substantially uniform contact pressure on the disk 4 can be realized. Furthermore, a windshield wiper device can be provided which has an improved adaptation to the windshield 4 and a high wiping quality.

According to further embodiments, in addition to a quick-fix attachment fastener which can be used for fin-ray wipers, in which the entire windshield wiper device is removed from the drive shaft on the vehicle, a mechanism can be provided to move the wiper blade 2 of a windshield wiper device from the windshield 4 withdraw or set up on this. This further simplifies the use, for example, for a manual cleaning of the disc 4. The windshield wiper device according to the present disclosure can be provided with small dimensions, whereby a field of vision of a driver is little if not impaired. A functionality and stability of the windshield wiper device is ensured in particular by the provision of the at least one stabilizing means of the lower part.

Claims

claims

1 . Scheibenwischvornchtung (100, 200, 300, 400) for a vehicle, in particular a motor vehicle, comprising a wiper blade (2) with

an elongated upper part (10) which is at least partially bendable,

an elongated lower part (12), which is designed to be at least partially bendable, wherein the elongated lower part (12) comprises a first material,

- A plurality of connecting elements (18) for connecting the upper part (10) and the lower part (12), wherein the connecting elements (18) along a longitudinal extent (8) of the wiper blade (2) spaced from each other and on the upper part (10) and / or at the lower part (12) by means of a rotary joint (20) are mounted, in particular wherein the connecting elements (18) are adapted to a movement of the upper part (10) and the lower part

(12) relative to each other with a movement component along the longitudinal extent (8) of the wiper blade (2) to allow, and

- At least one stabilizing means (1 10, 210) made of a second material.

2. Windscreen wiping device (100, 200, 300, 400) according to claim 1, wherein the second material comprises a metal and / or carbon.

3. Scheibenwischvornchtung (100, 300, 400) according to claim 1 or 2, wherein the at least one stabilizing agent (1 10) a flat belt, in particular a

Metal strip or an organo sheet, includes.

A windscreen wiper (200, 300, 400) according to claim 1, wherein said at least one stabilizing means (210) comprises reinforcing fibers.

A windscreen wiper (200, 300, 400) according to claim 4, wherein the reinforcing fibers comprise carbon fibers and / or glass fibers.

6. Scheibenwischvornchtung (100, 200, 300, 400) according to one of claims 1 to 5, wherein the at least one stabilizing means (1 10, 210) is at least partially enclosed by the first material, and in particular encapsulated.

7. Windscreen wiper device (100, 200, 300, 400) according to one of claims 1 to 6, wherein the at least one stabilizing means (1 10, 210) is at least partially embedded in the first material.

A windshield wiper device (100, 200, 300, 400) according to any one of claims 1 to 7, wherein the first material is selected from the group comprising: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polylactate (PLA) , Polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS), polyetheretherketone (PEEK), and polyvinylchloride (PVC).

9. Windscreen wiper device (100, 200, 300, 400) according to one of claims 1 to 8, further comprising a wiper blade-side fastening part (30) which is adapted to be connected to a fastening element on the vehicle.

10. Windscreen wiper device (100, 200, 300, 400) according to claim 9, wherein the at least one stabilizing means (110, 210) is arranged in a region of the wiper blade-side fastening part.

1 1. Windscreen wiper device (100, 300, 400) according to claim 10, wherein the at least one stabilizing means (1 10) in the region of the wiper blade side fixing part has a recess (1 12), in particular wherein the recess (1 12) set for a passage of the fastener on the vehicle is.

12. Windscreen wiper device (300) according to one of claims 1 to 1 1, comprising at least one spoiler (310) which is arranged on the elongated upper part (10).

13. The windshield wiper device (300) of claim 12, wherein the least one spoiler (310) has a cross section substantially perpendicular to the longitudinal extent (8), and wherein the cross section is symmetrical or asymmetrical.

14. A windshield wiper device (300) according to claim 13, wherein the cross section has a substantially chamfered or concave portion.

15. Windscreen wiper device (400) according to any one of claims 1 to 14, wherein the at least one stabilizing means at least one cover element (410) umfasst, which is attachable to at least one connecting element of the plurality of connecting elements (18).

16. Windscreen wiper device (400) according to claim 15, wherein the at least one cover element (410) at least partially covers a region between the elongated upper part (10) and the elongate lower part (12).

17. A method for producing a windshield wiper device (100, 200, 300, 400) according to one of claims 1 to 16, comprising overmoulding the at least one stabilizing agent (110, 210) with the first material.