Wiper device and wiper arm for windscreen wiper

Abstract

The invention relates to a wiper device (10) for a windscreen wiper (11), comprising at least one wiper arm adapter (12), the wiper arm adapter (12) comprising at least one cover (14) with a line guide unit (16) for receiving at least one line element (18) of the windscreen wiper (11). According to the invention, the cover (14) is designed as a curved part.

Description

Technical Field

[0001] The invention relates to a wiper device and a wiper arm for a windshield wiper. Background Art

[0002] A windshield wiper device for a windshield wiper has been proposed, which has at least one wiper arm adapter, wherein the wiper arm adapter comprises at least one cover having a line guiding unit for accommodating at least one line element of the windshield wiper. Summary of the invention

[0003] The invention relates to a windshield wiper device for a windshield wiper having at least one wiper arm adapter, wherein the wiper arm adapter comprises at least one cover having a line guide unit for accommodating at least one line element of the windshield wiper.

[0004] It is proposed that the cover is constructed as a bent part. The windshield wiper is preferably a windshield wiper of a vehicle, in particular a passenger car, for cleaning a windshield, a rear window, an observation window of a sensor of the vehicle, etc. The wiper arm adapter is preferably configured to couple the wiper blade of the windshield wiper to the wiper arm of the windshield wiper mechanically and in particular in terms of fluid technology and / or electrically. At least one pipeline element is preferably a fluid pipeline element for guiding the wiping fluid from the wiper arm to a spray unit of the wiper arm adapter and / or the wiper blade. The spray unit is preferably configured to apply the wiping fluid to the surface to be cleaned. As an additional or alternative, the pipeline guiding unit is configured to receive at least one electrical line, in particular at least one cable, for example, the electrical line is used to electrically connect a heating element and / or a sensor element of the wiper device arranged in the wiper blade and / or the wiper arm adapter.

[0005] The wiper arm adapter, in particular the cover, can be constructed in one piece with the wiper arm or can be constructed to be detachable from the wiper arm without destruction. The cover is preferably made of, in particular, a single plate. The cover preferably comprises a plurality of sections, which are separated from each other by at least one bend of the plate and / or at least one cutout in the plate. The cover preferably comprises a front section. The outer surface of the front section preferably has the largest area of ​​all sections of the cover. The front section is preferably constructed in a full-face shape and in particular has no cutouts, holes or other recesses. The cover preferably comprises at least one side wall, which is arranged at an angle at the front section. Preferably, the main extension direction of the side wall extends transversely to, in particular at least substantially perpendicularly to, the main extension direction of the front section. The cover preferably comprises another side wall, which is arranged at an angle at the front section. Preferably, the main extension direction of the other side wall extends transversely to, in particular at least substantially perpendicularly to, the main extension direction of the front section. The side wall and the further side wall are particularly preferably arranged at the front section at opposite ends of the front section. Preferably, the front section, the side wall and the further side wall form a U-shaped profile in a cross section perpendicular to the longitudinal axis of the cover. The spacing between the side walls extending perpendicular to the longitudinal axis of the cover can vary along the longitudinal axis, in particular increase or be constant in a direction along the longitudinal axis. The maximum longitudinal extension of the cover parallel to the longitudinal axis is preferably greater than the maximum spacing between the side walls.

[0006] The front section, the side wall and the further side wall preferably define a receiving space. The line guiding unit is preferably arranged in the receiving space formed by the front section, the side wall and the further side wall. The front section, the side wall and the further side wall preferably form a guide rail with a U-shaped profile, which is provided for being received by the coupling section of the wiper arm or for receiving the coupling section of the wiper arm.

[0007] The expression “substantially perpendicular” should here particularly specify an orientation of the direction relative to a reference direction, wherein the direction and the reference direction particularly when viewed in the projection plane enclose an angle of 90° and the angle has a maximum deviation of particularly less than 8°, advantageously less than 5° and particularly advantageously less than 2°.

[0008] A “main extension plane” of a structural unit is to be understood in particular as a plane which is parallel to the largest side surface of a smallest imaginary cuboid which still completely surrounds the structural unit and which extends in particular through the center point of the cuboid.

[0009] Advantageously, "integrally" should also be understood as one-piece. "One-piece" should be understood in particular as molding in one piece. Preferably, the one piece is made from a single blank, material and / or casting, particularly preferably by an injection molding process, in particular a single-component injection molding process and / or a multi-component injection molding process.

[0010] “Provided” is to be understood in particular to mean specially programmed, designed and / or equipped. “An object is provided for a specific function” is to be understood in particular to mean that the object fulfills and / or performs this specific function in at least one application state and / or operating state.

[0011] Advantageously, the configuration according to the invention allows the windshield wiper device to be produced quickly and cost-effectively.

[0012] It is further proposed that the cover is at least substantially completely made of steel, in particular stainless steel. Preferably, the cover is made of sheet steel. "Substantially completely made of material" should preferably be understood as being made of the material in terms of volume and / or mass to be at least 50%, preferably at least 75%, particularly preferably more than 90%, in particular more than 95%. The cover can, for example, additionally include a coating, in particular a corrosion protection, an insert or other elements that are not made of steel. Particularly preferably, the cover is made of sheet steel as a stamped and bent part. The design according to the invention allows the wiper device to be manufactured particularly quickly and cost-effectively.

[0013] It is further proposed that the pipeline guiding unit comprises at least one form-locking element, which is constructed integrally with the cover. Preferably, the form-locking element is formed by at least one subsection of the cover, which is separated from the side wall by a cutout in the side wall. The form-locking element preferably comprises a stop surface. The form-locking element preferably comprises a bearing surface. The form-locking element preferably comprises at least one side wall bend, which separates the bearing surface from the side wall. The form-locking element preferably comprises another bend, which separates the bearing surface from the stop surface. The main extension plane of the bearing surface preferably extends transversely to, preferably at an angle greater than 45°, in particular at least substantially perpendicular to the side wall. The main extension plane of the stop surface preferably extends at least substantially parallel to the side wall. "Substantially parallel" here should be understood in particular as an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation of less than 8°, advantageously less than 5° and particularly advantageously less than 2° relative to the reference direction. The side wall bend tilts the support surface from the main extension plane of the side wall, preferably in the direction of the other side wall. The support surface is preferably arranged in the receiving space. The other bend tilts the stop surface preferably relative to the support surface in the direction away from the front section. The stop surface is preferably arranged in the receiving space. The stop surface is preferably arranged offset relative to the side wall, preferably in the direction of the other side wall. The subsection and the side wall preferably form a channel for accommodating at least one pipeline element. The channel preferably forms a form-locking portion for the pipeline element in a direction perpendicular to the longitudinal axis and parallel to the main extension plane of the front section. The cover can have exactly one form-locking element or a plurality of form-locking elements, especially similar to the form-locking elements described above, which are arranged at the side wall in particular along the longitudinal axis. The pipeline guide unit can only include at least one form-locking element formed by the cover or include at least one retaining element configured independently of the cover for fastening, supporting or guiding at least one pipeline element. The design according to the present invention can advantageously design the wiper device with few components.

[0014] It is further proposed that the cover comprises at least one particularly already mentioned front section and the particularly already mentioned side wall arranged at the front section and at least one particularly already mentioned further side wall arranged at the front section, wherein the form-fitting element is formed by the particularly already mentioned subsection of the cover which is bent from the side wall in the direction of the further side wall. The design according to the invention advantageously enables the windshield wiper device to be designed with few components.

[0015] It is further proposed that the wiper device comprises a holding unit for fastening the cover part to the wiper arm, which holding unit is arranged eccentrically on the cover part. The holding unit is preferably arranged at the end of the cover part along the longitudinal axis of the cover part. Preferably, the holding unit comprises at least one holding element, which is arranged together with the form-locking element in at least one cross-sectional plane perpendicular to the longitudinal axis of the cover part. The cover part preferably has an imaginary center plane, which is perpendicular to the main extension plane of the front section. The center plane preferably has a spacing from the side wall in each direction perpendicular to the longitudinal axis, which spacing is equal to the spacing of the center plane from the other side wall in this direction. The geometric center point of the holding unit is preferably arranged spaced apart from the center plane. Preferably, the holding unit is constructed asymmetrically with respect to the center plane. Preferably, at least the main part of the holding element and the main part of the form-locking element are arranged on different sides of the center plane in a cross-sectional plane perpendicular to the longitudinal axis. The "main part" of an object should be understood in particular as at least 25%, preferably at least 50%, preferably more than 75% of the object in terms of volume or mass. By means of the design according to the invention, the pipeline guide unit can be advantageously arranged close to the end of the cover. In particular, a high degree of control of the range of motion of the pipeline element can be advantageously achieved. In particular, the risk of damage or locking of the pipeline element during operation of the wiper device can be advantageously kept low.

[0016] It is further proposed that the holding unit includes at least one pivot element, the pivot axis of which is arranged at the pipeline guide unit of the cover and at the side wall, especially at the other side wall mentioned above. The pivot axis is preferably formed by a rivet. The pivot axis is preferably arranged at the other side wall, especially in the recess of the other side wall. The pivot axis is preferably arranged at the stop surface of the shape locking element, especially in the recess of the stop surface. The pivot axis is preferably at least substantially perpendicular to the longitudinal axis and / or the center plane and / or at least substantially parallel to the main extension plane of the front section. Preferably, the pivot axis is arranged in a rearward offset or flush with the side facing the side wall of the stop surface toward the other side wall. The pivot axis is preferably a holding element of the holding unit, especially the eccentrically arranged element mentioned above. The pivot axis can be constructed in one piece with the pivot element, wherein the pivot axis can be pivotally supported at the stop surface and the other side wall. Alternatively, the pivot axis is connected to the stop surface and the other side wall in a rotationally fixed manner, and the pivot element is pivotably supported on the pivot axis. The pivot element is preferably designed as an, in particular, bow-shaped locking element, which is provided for surrounding and preferably for positively locking a counterpart of the wiper arm between it and the front section. The pivot element is particularly preferably provided for engaging in a retaining arch or an assembly opening of a spring element, in particular a helical tension spring, of the wiper arm. The design according to the invention advantageously enables the line guide unit and the retaining unit to be realized in a space-saving manner.

[0017] It is further proposed that the wiper device comprises at least one holding unit, in particular the one already mentioned, for fastening the cover to the wiper arm, wherein the cover forms at least one spacer of the line guide unit in order to hold the line element at a distance from the device pivot axis of the cover. The device pivot axis is preferably provided for tilting the cover relative to the wiper arm during the installation of the wiper device on the wiper arm and / or during the operation of the windshield wiper with the wiper device. The side wall and the further side wall preferably comprise two mutually opposite mounting recesses, which define the device pivot axis. The spacer is preferably formed by a bearing surface. The mounting recess is preferably completely located between the side of the front section facing the bearing surface and the side of the bearing surface facing away from the front section. The spacer, that is to say the bearing surface, preferably guides at least one line element through the mounting recess in the direction of the longitudinal axis on the side of the mounting recess facing away from the front section. By means of the embodiment according to the invention, the windshield wiper device can advantageously accommodate the line element safely and securely.

[0018] It is further proposed that the cover forms at least one, in particular already mentioned, form-fitting element of the line guide unit, which is provided for movably arranging the line element in the line guide unit. Preferably, the form-fitting element is a bearing or a guide element for moving, in particular sliding, the at least one line element in the longitudinal direction of the cover. Preferably, the distance between the stop surface and the side wall is greater than the maximum transverse extension provided for the at least one line element. By means of the design according to the invention, the wiper device is compatible with an advantageously large number of wiper arms and / or wiper blades.

[0019] It is further proposed that the cover part constructs at least one form-locking element of the pipeline guiding unit, which is provided for fixedly arranging the pipeline element in the pipeline guiding unit. The distance between the stop surface and the side wall is, for example, smaller than the maximum transverse extension of the at least one pipeline element. In particular, the distance between the stop surface and the side wall has a press fit with respect to the maximum transverse extension of the at least one pipeline element. As an alternative or in addition, the pipeline guiding unit includes at least one fixing element constructed independently of the cover part, which is arranged at the cover part, in particular at the form-locking element, in order to fix at least one pipeline element. The fixing element is preferably configured as a clip in order to press the pipeline element against the side wall and / or the front section. By means of the design according to the present invention, the risk of the pipeline element detaching from the cover part can be advantageously kept low.

[0020] In addition, a wiper arm for a windshield wiper is proposed, which has at least one wiper device according to the invention and at least one conduit element, which is arranged in the wiper device. The conduit element is preferably arranged in the receiving space. The conduit element preferably extends along the longitudinal axis between the center surface and the side wall. The conduit element is preferably arranged between the stop surface and the side wall, in particular movably or clamped. By means of the design according to the invention, a wiper arm can be constructed which is advantageously low-cost and has few components.

[0021] The wiper device according to the invention and / or the wiper arm according to the invention are not to be limited to the applications and embodiments described above. In particular, the wiper device according to the invention and / or the wiper arm according to the invention can have a number of individual elements, components and units that differs from the number mentioned here in order to fulfill the functional mode described here. Furthermore, with regard to the range of values ​​specified in the present disclosure, the values ​​within the mentioned boundaries are also to be regarded as public and can be used arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Further advantages are obtained from the following description of the drawings. Embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain a large number of combined features. A person skilled in the art will also consider these features individually in an appropriate manner and combine them into meaningful further combinations.

[0023] in:

[0024] Figure 1 A schematic diagram of a windshield wiper having a wiper device according to the invention,

[0025] Figure 2 A schematic diagram of a windshield wiper device according to the invention is shown from a vertical perspective onto a front section of the windshield wiper device according to the invention,

[0026] Figure 3 shows a schematic perspective view of a windshield wiper device according to the invention, and

[0027] Figure 4 A further schematic perspective illustration of a windshield wiper device according to the invention is shown. DETAILED DESCRIPTION

[0028] Figure 1 A wiper arm 13 for a windshield wiper 11 is shown. The wiper arm 13 comprises at least one wiper device 10. The wiper device 10 comprises at least one line element 18, which is arranged in the wiper device 10. The line element 18 is designed, for example, as a fluid line, in particular a hose, for conveying a wiping fluid through the wiper device 10.

[0029] Figure 2 The wiper device 10 is shown. The wiper device 10 comprises at least one wiper arm adapter 12. The wiper arm adapter 12 comprises at least one cover 14. The cover 14 is designed as a bent part, in particular a stamped bent part. The cover 14 is at least substantially completely made of steel. The cover 14 comprises at least one front section 22. The cover 14 comprises a side wall 24 arranged at the front section 22. The cover 14 comprises at least one further side wall 26 arranged at the front section 22. The front section 22 is preferably arranged to be arranged facing away from the surface to be cleaned by the windshield wiper 11. The front section 22 is preferably arranged to conceal the line element 18 from the viewing direction, along which the surface to be cleaned is arranged behind the windshield wiper 11. The side walls 24, 26 are preferably oriented in a curved manner from the front surface. Preferably, the respective main extension planes of the side walls 24, 26 extend at least substantially perpendicularly to the main extension plane of the front section 22. The side walls 24, 26 are preferably arranged at opposite ends of the front section 22. The cover 14 preferably comprises a longitudinal axis 42, which extends at least substantially parallel to the main extension plane of the front section 22 and at least substantially perpendicular to the shortest distance between the side walls 24, 26. Preferably, the maximum longitudinal extension of the cover 14 in the direction of the longitudinal axis 42 is greater than the shortest distance between the side walls 24, 26, in particular more than twice. Preferably, the maximum height extension of the side walls 24, 26 perpendicular to the main extension direction of the front section 22 is less than the shortest distance between the side walls 24, 26 (see Figure 2 and Figure 3 ). Preferably, the cover 14 has the shortest distance between the side walls 24, 26 at the end of the cover 14 with respect to the longitudinal axis 42. Preferably, the side walls 24, 26 extend away from each other along the longitudinal axis 42 starting from the end of the cover 14.

[0030] The cover 14 comprises at least one line guide unit 16 which receives at least one line element 18. The line guide unit 16 comprises at least one form-fitting element 20 which is formed integrally with the cover 14. The form-fitting element 20 is formed by a subsection of the cover 14. Figure 2 and Figure 3, respectively, show a stereoscopic view of a wiper device 10. A subsection of the cover 14 is bent from the side wall 24 in the direction of the further side wall 26. The subsection is preferably separated from the side wall 24 by a cutout in the side wall 24. The subsection has a side wall bend, which tilts the subsection out of the main extension plane of the side wall 24 in the direction of the further side wall 26. The side wall bend preferably has a bending edge, which extends at least substantially parallel to the main extension plane and / or the longitudinal axis 42 of the front section 22. The subsection preferably has a contact surface 34 arranged at the side wall bend. The main extension surface of the contact surface 34 preferably extends at least substantially parallel to the front section 22. The subsection preferably includes a stop surface 36, which is oriented obliquely away from the contact surface 34 by further bending from the front section 22. The main extension plane of the stop surface 36 preferably extends at least substantially perpendicularly to the main extension plane of the front section 22 and preferably at least substantially parallel to the longitudinal axis 42. Preferably, the side wall 24, the further side wall 26 and the stop surface 36 have a common end plane, which preferably extends at least substantially parallel to the main extension plane of the front section 22. The line element 18 is preferably arranged in a form-fitting manner between the stop surface 36 and the side wall 24 (see Figure 1 In particular, depending on the distance between the stop surface 36 and the side wall 24 , the form-fitting element 20 of the line guiding unit 16 can be designed for movably or fixedly arranging the line element 18 in the line guiding unit 16 .

[0031] Alternatively, the main extension plane of the abutment surface 34 extends at least substantially perpendicularly to the front section 22, wherein the subsection is separated from the side wall 24, in particular by an L-shaped cutout, and the bent edge of the side wall bend preferably extends at least substantially perpendicularly to the main extension plane and / or the longitudinal axis 42 of the front section 22, wherein the abutment surface 34 is configured, for example, as a groove or a through-guide for receiving the pipeline element 18 in a form-fitting manner.

[0032] The windshield wiper device 10 comprises a holding unit 28 for fastening the cover 14 to the wiper arm 13. The holding unit 28 is preferably arranged along the longitudinal axis 42 at the end of the cover 14 which has the shortest distance between the side walls 24, 26. The holding unit 28 comprises at least one pivot element 30 which is pivotable at one end. Figure 4 The pivot element 30 is preferably embedded in the spring element of the wiper arm 11 (see Figure 1), in order to subject the wiper device 10 to a tensioning force in the direction of the wiper arm 11. The holding unit 28 comprises at least one pivot axis 32 for pivoting the pivot element 30. The pivot axis 32 is arranged on the pipeline guide unit 16, in particular on the stop surface 36 and on the other side wall 26 of the cover 14. The holding unit 28 is thus arranged eccentrically on the cover 14 in particular. The pivot axis 32 is preferably oriented at least substantially perpendicular to the longitudinal axis 42. The pivot element 30 is designed as a latching element, which is provided for latching at the front section 22 with an end of the pivot element 30 spaced apart from the pivot axis 32.

[0033] The holding unit 28 preferably comprises a mounting recess 38 arranged in the side wall 24 and a further mounting recess 40 arranged in the further side wall 24. The mounting recesses 38, 40 preferably define a device pivot axis 37 of the holding unit 28, by means of which the wiper device 10 can be pivoted relative to the wiper arm 13 in the mounted state and / or for mounting (see Figure 1 ). The mounting recesses 38, 40 are preferably arranged closer to the end of the cover 14 than the pipeline guide unit 16 with respect to the longitudinal axis 42. The cover 14 forms at least one spacer 35 of the pipeline guide unit 16 in order to hold the pipeline element 18 at a distance from the device pivot axis 37 of the cover 14. Preferably, the contact surface 34 forms the spacer 35. The contact surface 34 preferably has a side facing away from the front section 22, which is further away from the front section 22 than the point of the mounting recesses 38, 40 that is farthest away from the front section 22.

Claims

1. A windshield wiper device (10) for a windshield wiper (11), the windshield wiper device having at least one wiper arm adapter (12), wherein: The wiper arm adapter (12) comprises at least one cover (14) having a line guide unit (16) for receiving at least one line element (18) of the windshield wiper (11), characterized in that the cover (14) is designed as a bent part.

2. The windshield wiper device (10) according to claim 1, characterized in that The cover (14) is at least substantially completely made of steel.

3. The windshield wiper device (10) according to claim 1 or 2, characterized in that The line guiding unit (16) comprises at least one form-fitting element (20) which is formed integrally with the cover (14).

4. The windshield wiper device (10) according to claim 3, characterized in that The cover (14) comprises at least one front section (22) and a side wall (24) arranged on the front section (22) and at least one further side wall (26) arranged on the front section (22), wherein the form-fitting element (20) is formed by a subsection of the cover (14) which is bent from the side wall (24) in the direction of the further side wall (26).

5. The windshield wiper device (10) according to any one of the preceding claims, characterized in that A holding unit (28) for fastening the cover (14) to a wiper arm (13) of the windshield wiper (11) is arranged eccentrically on the cover (14).

6. The windshield wiper device (10) according to claim 5, characterized in that The holding unit (28) comprises at least one pivot element (30), the pivot axis (32) of which is arranged on the line guide unit (16) and on the side wall (26) of the cover (14).

7. A windshield wiper device (10) according to any one of the preceding claims, characterized in that At least one holding unit (28) for fastening the cover (14) to a wiper arm (13) of the windshield wiper (11), wherein the cover (14) forms at least one spacer (35) of the pipeline guide unit (16) in order to hold the pipeline element (18) spaced apart from a device pivot axis (37) of the cover (14).

8. The windshield wiper device (10) according to any one of the preceding claims, characterized in that The cover (14) forms at least one form-fitting element (20) of the line guiding unit (16), which is provided for movably arranging the line element (18) in the line guiding unit (16).

9. A windshield wiper device (10) according to any one of the preceding claims, characterized in that The cover (14) forms at least one form-fitting element (20) of the line guiding unit (16), which is provided for fixedly arranging the line element (18) in the line guiding unit (16).

10. A wiper arm (13) for a windshield wiper (11), comprising at least one windshield wiper device (10) according to claim 1 and at least one line element (18) which is arranged in the windshield wiper device (10).

Images