Wiper blade, in particular for a motor vehicle

Abstract

A wiper blade (10) is proposed, in particular for a motor vehicle. The wiper blade comprises a wiper strip (12) and a coupling element (14) for the connection of a fluid line (22), comprising a coupling socket (26). According to the invention, the coupling socket (26) is at least partially flexible.

Description

TECHNICAL FIELD

[0001] The invention relates to a wiper blade according to the preamble of the independent claim. BACKGROUND

[0002] Many wiper blades are known which have a wiper blade and a coupling element for docking a fluid line comprising a coupling socket. Fluid is guided here from the wiper arm first into the coupling element to an outlet nozzle. A coupling socket is arranged at the coupling element, to which a fluid line is connected, which guides fluid into or out of the coupling element. SUMMARY

[0003] Advantages of the invention

[0004] The wiper blade according to the invention with the features of the independent claim has the advantage that the coupling socket is at least partially flexibly or resiliently configured. A reliable connection between the coupling element and the fluid line is thereby provided.

[0005] By means of the measures mentioned in the dependent claims, advantageous further developments and improvements of the features explained in the independent claim are furthermore derived.

[0006] In a simplified and thus advantageous configuration, a coupling element is provided for docking the fluid line at the wiper blade.

[0007] It is particularly advantageous when the coupling socket of the coupling element is connected to the wiper blade, since a reliable fluid delivery is thereby ensured.

[0008] It can furthermore be considered advantageous when the coupling element is provided for fastening at the wiper arm, since the coupling element, in addition to the fluid delivery, also assumes a fastening function for the wiper blade.

[0009] In an inexpensive and thus advantageous configuration, the wiper blade has a wind deflector which carries the fluid line or is configured in one piece with the fluid line.

[0010] It can furthermore be considered advantageous when a plurality of coupling sockets are provided, since in this way an optimal water or cleaning agent guidance is made possible.

[0011] Here, it is particularly advantageous when at least one of the coupling sockets is provided for guiding fluid into the fluid line, since in this way an optimal water or cleaning agent guidance is made possible.

[0012] In a simplified and therefore advantageous embodiment, the coupling sleeve is constructed as a spherical seat sleeve. This enables high flexibility and adaptability. Here, it is advantageous when the coupling sleeve is guided laterally, thereby achieving two-dimensional flexibility.

[0013] It is particularly advantageous when the coupling sleeve has a rib or a side recess, because in this way the fluid line can be stably secured at the coupling sleeve.

[0014] In a simplified, inexpensive, and therefore advantageous construction scheme, at least one coupling socket is constructed as a double socket or a quadruple socket. Attached Figure Description

[0015] Embodiments of the present invention are shown in the accompanying drawings and are further explained in the following description.

[0016] in:

[0017] Figure 1 A wiper blade according to the invention is shown in a schematic side view;

[0018] Figure 2 The region of the coupling element of the wiper blade according to the invention is shown in a schematic side view; and

[0019] Figure 3 The coupling sleeve of the coupling element is shown in detail. Detailed Implementation

[0020] exist Figure 1 The wiper blade 10 according to the invention is shown in a schematic side view. The wiper blade includes a wiper beam 12 and a coupling element 14 for fastening to a wiper arm that is not shown here due to visibility. The wiper blade 10 according to the invention is configured as a wet blade (Nassblatt), in which the cleaning fluid can be guided in the wiper beam 12 and applied directly from the wiper beam 12 to the glass plate during the wiping process.

[0021] exist Figure 2 The schematic side view shows the scene in Figure 1 The wiper blade 10 shown is Figure 1 The area of ​​the coupling element 14. The wiper beam 12 ( Figure 1 The wiper blade 16 is formed by a wiper strip 16 and a spring strip 18. The wiper strip 16 is positioned on the windshield of the vehicle during operation, and the pre-tensioned spring strip 18 provides continuous support for the wiper strip 16 on the windshield. For this purpose, the wiper strip 16 is fastened to the spring strip 18.

[0022] Furthermore, a wind guide strip 20 is fastened at the spring strip 18, which wind guide strip 20 has a support force with which the wiper strip 16 is pressed against the glass pane in operation. Inside the wind guide strip 20, a fluid duct 22 is provided, by means of which a cleaning liquid, for example water, can be conveyed along the wiper strip 12. The fluid duct 22 can have, for example, holes in order to apply the cleaning liquid to the glass pane in the region of the wiper strip 16. The fluid duct 22 can also lead to a nozzle at the end of the longitudinal extension of the wiper strip 10 Figure 3 or to a nozzle along the longitudinal extension of the wiper strip, by means of which fluid can be applied to the glass pane.

[0023] The coupling element 14 is also fastened at the spring strip 18. The coupling element 14 has fastening means 24 with which the coupling element 14 can be mechanically fastened at the wiper arm. The fastening means 24 are here configured as a hole through which a pin provided at the wiper arm can be guided.

[0024] Furthermore, the fluid duct 22 of the wiper strip 12 continues in the coupling element 14. For the connection, the coupling element 14 has a coupling socket 26 which is configured as a spherical seat socket. The coupling socket 26 thus has a spherical portion 28 and a tubular portion 30 and is hollow- configured in the interior of the coupling socket in order to continue the fluid duct 22. In order to fasten the coupling socket 26, the base portion 32 of the coupling element 14 has a hollow spherical region 34 in the region of the fluid duct 22, into which the spherical portion 28 of the coupling socket 26 is inserted, thus forming a ball joint. The hollow spherical region 34 is here arranged in such a way that the spherical portion 28 is rotatably movably supported in the hollow spherical region 34, i.e. in such a way that the fluid duct 22 of the coupling element 14 continues via the spherical portion 28 and the tubular portion 30 of the coupling socket 26 into the wiper strip 12. The coupling socket 26 is thus movably, i.e. flexibly or flexibly configured.

[0025] In order to continue the fluid duct 22 via the coupling socket 26, a flexible hose is tensioned onto the tubular portion 30 of the coupling socket 26, which hose can also be configured in one piece with the wind guide strip 20 in a variant of the application.

[0026] The fluid line 22 furthermore continues in the direction of the wiper arm. The supply of the fluid into the fluid line 22 is effected here at the coupling element 14, which is connected to a supply line arranged at the wiper arm. A hollow spherical region 34 can also be provided here, so that the coupling socket 26 is flexible or rather flexible.

[0027] In Figure 3 The coupling socket 26 is shown in a schematic side view in Fig. 1. The coupling socket is basically constructed in two parts and thus comprises the spherical portion 28 and the tubular portion 30. The spherical portion 28 and the tubular portion 30 are fixedly connected to one another or rather integrally constructed. The tubular portion 30 is hollow inside and thus forms a line 38, which continues into the spherical portion 28. At the end of the longitudinal extension of the line 38, the line has a conical flared mouth 40 on one side of the spherical portion 28, which flared mouth extends to the outside. On the other side of the left extension of the tubular portion 30, a ribbing 44 is provided, which ribbing consists of one or more encircling thickening of the tubular portion 30. The ribbing 44 is responsible for reliably supporting the elastic hose. The fluid line 22 is thus formed by the inside of the hose, by the line 38 and by the inside of the base portion 32 of the coupling element 14.

[0028] The flared mouth 40 serves to substantially not disturb or reduce the flow of fluid when the coupling socket 26 is rotated in the hollow spherical region 34. The coupling socket 26 is integrally manufactured from plastic. However, in a variant of the application, it can also be constructed from metal, in particular non-rusting metal, such as aluminum.

[0029] The base part 32 of the coupling element 14 is here configured as a plastic injection-molding part and is fastened at the spring strip 18. In a variant, the base part 32 can also be fastened in particular rotatably active at a separate fastening element which is fastened at the spring strip 18. In a variant of the application, the base part 32 can also be configured in one piece with the coupling socket 26. In order to produce the flexibility of the coupling socket 26, this can have a portion with a higher elasticity compared to the elasticity of the base part 32. This portion with a higher elasticity can thus replace the ball joint formed by the hollow spherical region 34 and the spherical portion 28. The portion can be produced for example by a multi-component injection-molding process in which for the portion a softer plastic is used compared to the rest of the coupling element 14. In a variant, the coupling element 14 can also be configured in one piece and in order to produce the flexibility of the coupling socket 26 a weakened region can be provided for example by a smaller wall thickness of a portion of the tubular portion 30, so that the ball joint can be dispensed with. By the flexibility of the coupling socket 26 a better durability, in particular under shock conditions, can be achieved in particular. Furthermore, manufacturing tolerances in the production of the wiper blade 10 can be better compensated or the installation of the wiper blade 10 can also be simplified.

[0030] In a further variant, in addition to or instead of the ribs 44, a recess can be provided at the tubular portion 30. Likewise, one of the coupling sockets 26 can also be configured as a double socket or a quadruple socket, so that a plurality of conduits 38 which are connected to a plurality of fluid conduits 22 are guided in a unique coupling socket 26. Furthermore, the mobility of the coupling socket 26 can be limited for example by guide means. By lateral guide means, for example by guide walls, the three-dimensional mobility of the coupling socket 26 can be reduced to a two-dimensional mobility.

Claims

1. A wiper blade (10), comprising a wiper beam (12) and a coupling element (14) including a coupling sleeve (26) for engaging a fluid conduit (22), characterized in that, The coupling sleeve (26) is at least partially constructed to be flexible. The coupling sleeve (26) includes a spherical portion (28) and a tubular portion (30), wherein the tubular portion (30) is hollow inside, thus forming a conduit (38) that continues into the spherical portion (28), wherein at the end of the longitudinal extension of the conduit (38), the conduit has a conical flare (40) on one side of the spherical portion (28) that extends outward. The base portion (32) of the coupling element (14) has a hollow spherical region (34) in the region of the fluid conduit (22), and the spherical portion (28) of the coupling sleeve (26) is embedded into the hollow spherical region to form a spherical joint.

2. The wiper blade (10) according to claim 1, characterized in that, The coupling element (14) for docking the fluid pipe (22) is disposed at the wiper beam (12).

3. The wiper blade (10) according to claim 1 or 2, characterized in that, The coupling sleeve (26) of the coupling element (14) is connected to the wiper beam (12).

4. The wiper blade (10) according to claim 1 or 2, characterized in that, The coupling element (14) is configured to be fastened to the wiper arm.

5. The wiper blade (10) according to claim 1 or 2, characterized in that, The wiper beam (12) has an air guide (20) that carries the fluid pipe (22).

6. The wiper blade (10) according to claim 1 or 2, characterized in that, Multiple coupling sockets (26) are provided.

7. The wiper blade (10) according to claim 6, characterized in that, At least one of the coupling sleeves (26) is configured to guide fluid into the fluid conduit (22).

8. The wiper blade (10) according to claim 1 or 2, characterized in that, The coupling sleeve (26) is configured as a spherical seat sleeve.

9. The wiper blade (10) according to claim 1 or 2, characterized in that, The coupling sleeve (26) has a rib (42) or a side recess.

10. The wiper blade (10) according to claim 1 or 2, characterized in that, At least one coupling socket (26) is configured as a double socket or a quadruple socket.

11. The wiper blade (10) according to claim 1 or 2, characterized in that, The wiper blade (10) is used in motor vehicles.

12. The wiper blade (10) according to claim 8, characterized in that, The spherical seat sleeve is guided laterally.

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