Wiping device for a motor vehicle

Abstract

Wiping device (1) for a motor vehicle (2) with at least one wiper blade (3) and at least one drive (5), wherein the wiper blade (3) is movable over a disc (4) of the motor vehicle by means of the drive (5) during operation, wherein the wiper blade (3) is movable from a first lower edge position (21), in which a longitudinal extent (11) of the wiper blade (3) is oriented at least approximately parallel to a lower edge (10) of the disc (4), to a first inner position (22) on the disc (4), in which the longitudinal extent (11) of the wiper blade (3) is oriented at least substantially perpendicular to the lower edge (10) of the disc (4), and wherein the wiper blade (3) is movable from a second inner position (23) on the disc (4), in which the longitudinal extent (11) of the wiper blade (3) is oriented at least substantially perpendicular to the lower edge (10) of the disc (4), to a second lower edge position (24) is movable,in which the longitudinal extent (11) of the wiper blade (3) is oriented at least approximately parallel to the lower edge (10) of the disc (4).

Description

State of the art

[0001] The invention relates to a wiper device for a motor vehicle. Specifically, the invention relates to the field of passenger cars and trucks.

[0002] From DE 10 2016 208 574 A1 a drive unit of a wiper system for a motor vehicle is known.

[0003] With a conventional wiper system, the wiper blade can fold over on the windshield. This can cause unwanted noise.

[0004] DE 37 24 856 A1 discloses a windshield cleaning system with a wiper that can be moved linearly back and forth across the windshield. This system is particularly suitable for cleaning large areas. This system has the disadvantage that a guide at both ends and a corresponding drive for the wiper are required. Disclosure of the invention

[0005] The wiping device according to the invention, with the features of the main claim, has the advantage that an improved design and function are possible. This also prevents unwanted noise generation during operation.

[0006] The measures listed in the subclaims also result in advantageous developments and improvements of the features specified in the main claim.

[0007] It is advantageous that the wiper blade can be moved from the first inner position on the windscreen over a certain parallel wiping path at least substantially parallel across the windscreen into the second inner position on the windscreen such that the longitudinal extent of the wiper blade remains oriented at least substantially perpendicular to the lower edge. At least a substantial portion of the height of the windscreen can preferably be wiped over the parallel wiping path. Particularly even wiping can be achieved over the parallel wiping path. Depending on the design and application, the parallel wiping path can enable the use of just one wiper blade to wipe the windscreen. The wiping device can then, if necessary, have exactly one wiper blade.

[0008] It is advantageous that the first inner position on the windshield and the second inner position on the windshield at least substantially coincide. In this embodiment, at least no significant parallel wiping path is provided. Particularly in combination with a further development in which the wiper blade can be moved from the second edge position at least approximately along the longitudinal extension of the wiper blade into the first edge position, the wiper blade can always move on the windshield in the same direction of rotation.

[0009] It is advantageous that the wiper blade can be moved from the first lower edge position in an arcuate motion to the first inner position on the windshield. This allows the wiper blade to be advantageously guided from the bottom edge into the interior of the windshield.

[0010] It is advantageous that the wiper blade can be moved from the second inner position on the windshield in an arcuate motion to the second lower edge position. This allows the wiper blade to be advantageously guided from the interior of the windshield downwards to the edge.

[0011] It is advantageous that the longitudinal extension of the wiper blade in the first inner position forms an angle with the lower edge of more than 60°, in particular more than 70°, more particularly more than 80°, and less than 120°, in particular less than 110°, more particularly less than 100°, and / or preferably approximately 90°. This allows for an advantageous wiping effect to be achieved.

[0012] It is advantageous that the longitudinal extension of the wiper blade in the second inner position forms an angle with the lower edge of more than 60°, in particular more than 70°, more particularly more than 80°, and less than 120°, in particular less than 110°, more particularly less than 100°, and / or preferably approximately 90°. This allows for an advantageous wiping effect to be achieved.

[0013] It is advantageous that the wiper blade can be moved from the second lower edge position, at least approximately, along its longitudinal axis to the first lower edge position. This allows for a rotational movement of the wiper blade that always occurs in the same direction.

[0014] It is advantageous that the wiper blade can be moved across the windshield in such a way that a turning movement of the wiper blade, which enables a wiper lip to turn over, only occurs in an edge region at the lower edge of the windshield, wherein the edge region comprises the first lower edge position and the second lower edge position. This can minimize the noise that can occur when a wiper lip turns over. In particular, when the wiper lip turns over inside the windshield, the noise can be significantly more noticeable than when the wiper lip turns over at the edge of the windshield. This way, such noise can be avoided or at least reduced.

[0015] It is advantageous that the wiper blade can be moved into a parking position near the lower edge of the windshield, with the parking position being at least partially below the first lower edge position and / or at least partially below the second lower edge position. This allows, for example, the protection of the wiper blade when the vehicle is parked. In particular, it provides protection in cold temperatures. For instance, it prevents the sealing lip from being damaged in cold temperatures. Additionally, the functionality of the wiping mechanism after the vehicle has been parked can be improved in situations where, with a conventional design, the wiper blade would be exposed to snow, ice, or dirt.

[0016] It is advantageous that, when installed, the wiper blade is arranged in the parked position at least substantially beneath at least one body part, in particular a hood. This allows for advantageous protection of the wiper blade from environmental influences. Furthermore, an improved appearance can be achieved.

[0017] The wiper blade's park position isn't necessarily limited to when the vehicle is parked. Depending on the design, the wiper blade can also be in the park position while the vehicle is moving.

[0018] It is advantageous to provide an additional wiper blade that can be moved in accordance with the wiper blade. This allows for a design with multiple, particularly two, wiper blades. For example, one wiper blade can serve to clear the driver's field of vision. Short description of the drawings

[0019] Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with matching reference numerals. The drawings show: Fig. 1 A wiping device for a motor vehicle in an abstract, schematic, spatial representation, wherein a wiper blade is shown in a position on a disc. Fig. 2 a schematic representation of the in Fig. 1. Wiping device and disc shown, wherein two possible positions of the wiper blade corresponding to a possible embodiment of the wiping device are shown; and Fig. 3 a schematic representation of the in Fig. 1 Wiping device and disc shown, wherein several possible positions of the wiper blade are shown according to a further possible embodiment. Embodiments of the invention

[0020] Fig. Figure 1 shows a wiper device 1 on a motor vehicle 2 in a partial, schematic, spatial representation, wherein a wiper blade 3 is shown in a position during a wiping process on a windshield 4 of the motor vehicle 2. The motor vehicle can be designed, in particular, as a passenger car or a truck.

[0021] In this exemplary embodiment, the wiper device 1 has exactly one wiper blade 3. Furthermore, the wiper device 1 has a drive 5 for the wiper blade 3. In a modified embodiment, however, several, in particular two, such wiper blades can also be provided, which can be driven via suitable drives.

[0022] In the following, the design and operation of the wiper device 1 of the embodiment will also be described with reference to Fig. 2 further described.

[0023] Fig. 2 shows a schematic representation of the Fig. 1 shown wiper device 1 and the window 4, wherein two possible positions of the wiper blade 3 are shown according to a possible embodiment of the wiper device 1.

[0024] In one possible embodiment, the wiper device 1 has a wiper arm 6 and a linear guide 7. Furthermore, in this possible embodiment, a rotary guide 8 is provided, which enables rotation of the wiper blade 3. In this case, rotation of the wiper blade 3 can be enabled in only one direction of rotation, for example, only clockwise in this exemplary embodiment. However, rotation of the wiper blade in both directions of rotation, i.e. clockwise and counterclockwise, can also be enabled. The rotary guide 8 can therefore enable rotation by more than 360° and, in particular, endless rotation in one direction of rotation. The rotary guide 8 can be adjusted linearly along the wiper arm 6. This can take place perpendicular to the adjustment by the linear guide 7.

[0025] In the following, the design and operation of the wiper device 1 of the embodiment will also be described with reference to Fig. 3 further described.

[0026] Fig. 3 shows a schematic representation of the Fig. 1 Wiping device 1 and disc 4 shown, wherein several possible positions of the wiper blade 3 are shown according to a further possible embodiment of the wiping device 1.

[0027] During operation, the wiper blade 3 is moved across the windshield 4 of the vehicle 2 by the drive 5. In this embodiment, the movement begins in a first lower edge position 21, in which a longitudinal dimension 11 of the wiper blade 3 is oriented at least approximately parallel to a lower edge 10 of the windshield 4. The wiper blade 3 is then moved by the drive 5 from this first lower edge position 21 to a first inner position 22 on the windshield 4. In this first inner position 22, the longitudinal dimension 11 of the wiper blade 3 is then oriented at least substantially perpendicular to the lower edge 10 of the windshield 4.

[0028] Furthermore, the wiper blade 3 is moved from a second inner position 23 on the window 4, in which the longitudinal extension 11 of the wiper blade 3 is oriented at least substantially perpendicular to the lower edge 10 of the window 4, into a second lower edge position 24, in which the longitudinal extension 11 of the wiper blade 3 is oriented at least approximately parallel to the lower edge 10 of the window 4.

[0029] Especially in the Fig. 2, the first inner position 22 on the disc 4 and the second inner position 23 on the disc 4 can at least substantially coincide.

[0030] At the Fig. In the embodiment shown in Figure 3, the wiper blade 3 is moved from the first inner position 22 on the disc 4 over a certain parallel wiping path 30 parallel across the disc 4 to the second inner position 23 on the disc 4. During the sweeping of the disc 4 along the parallel wiping path 30, the longitudinal extent 11 of the wiper blade 3 remains oriented at least substantially perpendicular to the lower edge 10. Preferably, no rotational movement occurs at the rotary guide 8, so that the drive of the wiper blade 3 along the parallel wiping path 30 is effected at least substantially only via the linear guide 7.

[0031] As it is in Fig. 2 and Fig.3 is illustrated by an arrow 31, the wiper blade 3 is moved from the first lower edge position 21 in an arcuate movement 31 into the first inner position 22 on the window 4. Furthermore, the wiper blade 3 is moved from the second inner position 23 on the window 4 in an arcuate movement 32 into the second lower edge position 24, as illustrated by an arrow 32.

[0032] The longitudinal extent 11 of the wiper blade 3 is not necessarily oriented exactly perpendicular to the lower edge 10 of the disc 4 in the first inner position 22 or in the second inner position 23. However, the longitudinal extent 11 of the wiper blade 3 preferably forms an angle 35 with the lower edge 10 of more than 60°, particularly more than 70°, and more particularly more than 80°, and of less than 120°, particularly less than 110°, and more particularly less than 100°, in the first inner position 22. In one possible embodiment, the angle 35 is approximately 90°.

[0033] Accordingly, the longitudinal extension 11 of the wiper blade 3 in the second inner position 23 preferably encloses an angle 36 with the lower edge 10 of more than 60°, in particular more than 70°, furthermore in particular more than 80°, and less than 120°, in particular less than 110°, furthermore in particular less than 100°. In one possible embodiment, the angle 36 is approximately 90°. If the first inner position 22 and the second inner position 23 differ significantly from one another, the situation at the first inner position 22 is not necessarily the same as the situation at the second inner position 23. The angles 35, 36 can then differ from one another.

[0034] In one possible design or operating mode, the wiper blade 3 can be moved, at least approximately, from the second lower edge position 24 along its longitudinal extent 11 to the first lower edge position 21. This allows the wiper blade 3 to rotate. Additionally, only one direction of rotation of the wiper blade 3 can be achieved by means of the rotary guide 8.

[0035] Advantageously, the flipping or tilting of a wiper blade during a wiping action can be avoided. This prevents related noise generation. Additionally, operation can be enabled in which at least approximately the entire disc 4 can be wiped or cleaned in a single wiping action. Furthermore, the drive can be configured to allow different wiping actions or different wiping movements within a single wiping action.

[0036] The wiper blade 3 can be moved across the window 4 in such a way that any possible reversing movement of the wiper blade 3, which enables a wiper lip of the wiper blade 3 to turn over, only occurs in an edge region 40 at the lower edge 10 of the window 4. The edge region 40 comprises the first lower edge position 21 and the second lower edge position 24. The wiper blade 3 can be moved at least substantially horizontally from the second lower edge position 24 to the first lower edge position 22. Thus, a horizontal movement (return movement) 33 of the wiper blade 3 from the second lower edge position 24 to the first lower edge position 21 preferably occurs at the lower edge 10 of the window 4. The horizontal movement 33 preferably returns the wiper blade 3 from the second lower edge position 24 to the first lower edge position 22 as directly as possible, i.e. without a movement across the interior 34 of the window 4.

[0037] Additionally, in an advantageous embodiment, the wiper blade 3 can be moved into a parking position 45 near the lower edge 10 of the windscreen 4. The parking position 45 can be located, in particular, below the first lower edge position 21 or below the second lower edge position 21. This provides protection against dirt and freezing in winter. The parking position 45 can be located under a body panel 50. For example, the parking position can be located under a hood 50. These technical measures can also result in an improved overall aesthetic appearance, since, in a preferred embodiment, the wiper blade 3 is concealed by the body panel 50 in the parking position. In particular, an upper visible edge of the body panel 50 can be positioned higher than the wiper blade 3 in the parking position 45.

[0038] This prevents a wiper lip of a wiper blade 3 from tipping over or tipping over within the windshield 4 during a wiping operation. This can improve noise levels.

[0039] In addition, a wiper device 1 can advantageously be implemented in which the wiper arm 3 or wiper arms execute a wiping movement that is as continuous as possible. This is made possible in particular by a parallel wiping path 30.

[0040] In addition, a return of the wiper blade 3 can be achieved with a horizontal movement 33, which advantageously enables a rotation of the wiper blade 3 during the wiping movements in only one direction of rotation.

[0041] The invention is not limited to the described embodiments. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2016 208 574 A1

[0002] DE 37 24 856 A1

[0004]

Claims

[1] Wiper device (1) for a motor vehicle (2) with at least one wiper blade (3) and at least one drive (5), wherein the wiper blade (3) is movable during operation by means of the drive (5) over a window (4) of the motor vehicle, wherein the wiper blade (3) is movable from a first lower edge position (21), in which a longitudinal extent (11) of the wiper blade (3) is oriented at least approximately parallel to a lower edge (10) of the window (4), into a first inner position (22) on the window (4), in which the longitudinal extent (11) of the wiper blade (3) is oriented at least substantially perpendicular to the lower edge (10) of the window (4), and wherein the wiper blade (3) is movable from a second inner position (23) on the window (4), in which the longitudinal extent (11) of the wiper blade (3) is oriented at least substantially perpendicular to the lower edge (10) of the window (4) oriented, is movable into a second lower edge position (24),in which the longitudinal extension (11) of the wiper blade (3) is oriented at least approximately parallel to the lower edge (10) of the window (4). [2] Wiper device according to claim 1, characterized by that the wiper blade (3) can be moved from the first inner position (22) on the window (4) over a certain parallel wiping path (30) at least substantially parallel over the window (4) into the second inner position (23) on the window (4) such that the longitudinal extent (11) of the wiper blade (3) remains oriented at least substantially perpendicular to the lower edge (10). [3] Wiper device according to claim 1, characterized by that the first inner position (22) on the disc (4) and the second inner position (23) on the disc (4) at least substantially coincide. [4] Wiper device according to one of claims 1 to 3, characterized bythat the wiper blade (3) can be moved from the first lower edge position (21) in an arcuate movement (31) into the first inner position (22) on the window (4). [5] Wiper device according to one of claims 1 to 4, characterized by that the wiper blade (3) can be moved from the second inner position (23) on the window (4) in an arcuate movement (32) into the second lower edge position (24). [6] Wiper device according to one of claims 1 to 5, characterized by , a) that the longitudinal extension (11) of the wiper blade (3) in the first inner position (22) encloses an angle (35) of more than 60°, in particular more than 70°, further in particular more than 80°, and of less than 120°, in particular less than 110°, further in particular less than 100°, and / or preferably of approximately 90° with the lower edge (10) and / or b) that the longitudinal extension (11) of the wiper blade (3) in the second inner position (23) forms an angle (36) with the lower edge (10) of more than 60°, in particular more than 70°, further in particular more than 80°, and of less than 120°, in particular less than 110°, further in particular less than 100°, and / or preferably of approximately 90° [7] Wiper device according to one of claims 1 to 6, characterized by that the wiper blade (3) is movable from the second lower edge position (24) at least approximately along the longitudinal extent (11) of the wiper blade (3) into the first lower edge position (21). [8] Wiper device according to one of claims 1 to 7, characterized bythat the wiper blade (3) is movable over the window (4) in such a way that a turning movement of the wiper blade (3), in which a turning of a wiper lip of the wiper blade (3) is possible, occurs only in an edge region (40) at the lower edge (10) of the window (4), wherein the edge region (40) comprises the first lower edge position (21) and the second lower edge position (24). [9] Wiper device according to one of claims 1 to 8, characterized by in that the wiper blade (3) is movable into a parking position (45) near the lower edge (10) of the window (4), wherein the parking position (45) is provided at least partially below the first lower edge position (21) and / or at least partially below the second lower edge position (21). [10] Wiper device according to claim 9, characterized bythat in the mounted state the wiper blade (3) is arranged in the parking position (45) at least substantially under at least one body part (50), in particular a bonnet (50). [11] Wiper device according to one of claims 1 to 10, characterized by that a further wiper blade is provided which can be moved in accordance with the wiper blade (3).

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