ADAPTER UNIT

Description

[0001] The invention relates to an adapter unit which is provided for coupling, in particular detachably coupling, a wiper blade to a wiper arm, comprising a wind deflector surface which is designed to deflect incoming air and to press the wiper blade against a vehicle window. State of the art

[0002] Wiper devices comprising a wiper arm and a wiper blade, as well as an adapter unit for detachably coupling a wiper arm to a wiper blade, have already been proposed. Such wiper devices have the disadvantage that the wiper arm must always exert a high contact force to press the wiper blade against a vehicle windshield in order to ensure sufficient wiping performance. US 2015 / 096142 A1 discloses an adapter unit similar to the preamble of claim 1. Disclosure of the invention Advantages

[0003] The present invention describes an adapter unit which is provided for coupling, in particular detachably coupling, a wiper blade to a wiper arm, comprising a wind deflector surface which is designed to deflect incoming air and press the wiper blade against a vehicle window, and comprising a pivot bearing which is designed to pivotally mount the wiper arm relative to the wiper blade, wherein the pivot bearing has at least two columns arranged substantially vertically on an adapter base surface, wherein each of the columns has a respective hinge pin which is aligned parallel or substantially parallel to a bearing axis and is provided for mounting the wiper arm and / or a wiper arm adapter unit, characterized in that a windward column of the at least two columns has a lower height than a windward column of the at least two columns, in particular,that a height of at least two columns corresponds to a height profile of the wind deflector surface.,

[0004] This has the advantage that, due to the heights of the upwind pillar and the downwind pillar, the wind deflector surface can be positioned such that, when driving at high speed, it presses the wiper blade against the vehicle window due to the wind flowing against it. This increases the overall contact force of the wiper blade against the vehicle window and improves wiping performance. The contact force required by the wiper arm to press the wiper blade against the vehicle window is reduced in this way. A cheaper and / or simpler and / or more reliable and / or more compact wiper arm with a lower contact force can be used, in particular with a smaller spring for applying the contact force. Furthermore, the use of a wind deflector surface according to the present invention prevents the adapter unit orA wiper device—comprising the adapter unit, the wiper blade, and the wiper arm—generates a force due to unfavorable aerodynamics during high-speed driving that opposes the required contact pressure, thus impairing wiping performance or even making wiping impossible. The adapter unit according to the present invention ensures that aerodynamic effects, in particular wind, particularly headwind, result in a force pressing the wiper blade against the vehicle windshield. Because the first partial surface and the second partial surface each have a different geometry and / or a different orientation, precise adjustment of contact pressures, in particular an orientation of the contact pressures, is possible.

[0005] Advantageously, the adapter unit is formed integrally with the wind deflector surface. In this context, "integral" refers in particular to a materially bonded connection, such as through a welding process and / or an adhesive process, etc., and particularly advantageously to a molded connection, such as through production from a single casting and / or through production using a single- or multi-component injection molding process. Advantageously, the adapter unit is formed integrally with the pivot bearing.

[0006] When the adapter unit is mounted on the vehicle, the adapter base surface is preferably aligned parallel or largely parallel to the vehicle windshield. Largely parallel means that a first axis forms an angle with a second axis that deviates from 0° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°. Largely perpendicular means that a first axis forms an angle with a second axis that deviates from 90° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°.

[0007] Advantageously, the adapter unit is formed integrally with the adapter base. Advantageously, the adapter base is formed integrally with the at least two columns. Advantageously, at least one of the at least two columns is formed integrally with its pivot pin.

[0008] The vertical arrangement of a column on the adapter base surface should be understood in particular to mean that the column is arranged perpendicular to the adapter base surface along its length or its greatest longitudinal extent. The height of a column is preferably measured perpendicular to the adapter base surface.

[0009] The pivot bearing is advantageously designed such that the bearing axis is arranged perpendicular or largely perpendicular to a wiper arm direction. A wiper arm direction is to be understood as a direction which is arranged in the direction of the greatest longitudinal extent of the wiper arm mounted on the adapter unit, in particular in a basic position. In the unassembled state, the wiper arm direction is the direction on the adapter unit in which an assembled wiper arm would point, in particular in a basic position. The bearing axis is advantageously arranged parallel or largely parallel to an intended wiping direction. The bearing axis is advantageously arranged such that in a non-wiping rest state of the wiper device attached to the vehicle windshield - comprising the wiper arm adapter unit, the wiper blade and the wiper arm - it is arranged parallel or largely parallel to a wind flow direction or to a vehicle travel direction.In the following, the wind flow direction is understood to be the direction in which the airflow would flow towards the wiper device mounted on the vehicle windshield in a non-wiping, idle state. Particularly advantageously, the bearing axis is parallel to the vehicle windshield when mounted on the vehicle, preferably at any position across a wiping motion.

[0010] The features listed in the subclaims enable advantageous further developments of the adapter unit.

[0011] If the wind deflector surface encloses a main angle between 25° and 65°, preferably between 40° and 50° with the bearing axis, good aerodynamic properties of the adapter unit are enabled with a sufficiently large tree space of the adapter unit, in particular for accommodating the pivot bearing.

[0012] A principal angle is the angle that the wind deflector surface makes to the bearing axis. The principal angle is advantageously measured around the wiper arm direction. A positive principal angle between 0° and 90° describes a wind deflector surface that is at least partially facing the direction of wind flow. The closer the principal angle is to 90°, the more the wind deflector surface is facing the direction of wind flow. The principal angle is advantageously spanned between the bearing axis and a projection of the bearing axis onto the wind deflector surface, with the projection advantageously being carried out along a projection plane in which the bearing axis lies and which is arranged perpendicular or largely perpendicular to the wiper arm direction. It is also possible for the projection plane to be spanned by the bearing axis and a normal vector or a mean normal vector of the wind deflector surface. In the case of a curved orFor a non-planar wind deflector surface, it is conceivable that the principal angle is spanned between the bearing axis and a tangential plane, where the tangential plane lies at a specific point—for example, the center point—of the wind deflector surface or is the tangential plane of a mean normal vector of the wind deflector surface. A mean normal vector is a vector that represents the average of all or almost all normal vectors of the wind deflector surface.

[0013] If the joint pins have a larger pin radius on the underside of the pin facing the adapter base than on the top side of the pin facing away from the adapter base, this has the advantage that the wiper arm can be attached particularly easily and, at the same time, a particularly reliable coupling of the wiper arm to the pivot bearing is possible, especially under high forces. A pin is to be understood as a cylindrical element in the first approximation. A pin radius is the radius of a circular base area of ​​the cylindrical element. A pin, in particular a pin according to the present invention, can also be largely composed of several cylinder segments, in particular assembled in one piece. In this case, the different pin radii of one pin are the radii of the different cylinder segments from which the pin is composed.For example, it is conceivable for a bolt to be composed of two half-cylinder segments, each having a semicircle as its base and arranged such that the respective centers of the semicircles or center axes of the half-cylinder segments are adjacent to one another. The underside of the bolt can have a first half-cylinder segment, and the upper side of the bolt can have a second half-cylinder segment.It is also conceivable for the bolt to be formed by a cylindrical segment and a hollow cylinder segment placed on the cylindrical segment - in particular a half hollow cylinder segment which is formed by a hollow cylinder halved along an axis of symmetry, in particular with an inner radius which largely corresponds to a radius of the cylindrical segment - and / or a hollow truncated cone segment - in particular a half hollow truncated cone segment which is formed by a hollow truncated cone halved along an axis of symmetry, in particular with an inner radius which largely corresponds to a radius of the cylindrical segment. A hollow truncated cone is to be understood as a truncated cone which has a cylindrical bore along its axis of symmetry. The hollow cylinder segment and / or the hollow truncated cone segment preferably have a shorter length along their axis of symmetry than the cylindrical element.Preferably, the hollow cylinder segment and / or the hollow truncated cone segment are each arranged on the column.

[0014] If the at least two columns have a plurality of ribs which are provided for strengthening the columns, wherein the ribs are preferably each arranged on a side of a column opposite the hinge pin, the stability of the columns is increased. In this way, the reliability of the pivot bearing is further increased. The ribs can be arranged along the height of the column or perpendicular or largely perpendicular to the adapter base surface. In this way, the column can be stabilized against tilting, in particular in the direction of its pin. The ribs can also be aligned parallel or largely parallel to the adapter base surface. In this way, the column can be stabilized against torsion or twisting in a column longitudinal axis or about its height. A plurality of ribs should be understood to mean at least two ribs.The ribs of the plurality of ribs can each be configured differently, in particular having a different geometry and / or orientation. Preferably, the column is formed integrally with the plurality of ribs.

[0015] The wiper arm can be attached particularly securely if the hinge pins of the at least two columns are aligned with one another. In particular, the fact that the hinge pins of the at least two columns are aligned with one another should be understood to mean that a first hinge pin of a first column extends from the first column towards a second column and a second hinge pin of the second column extends from the second column towards the first column. The hinge pins are preferably aligned parallel or largely parallel to the bearing axis. For example, the first column can be the upwind column. For example, the second column can be the downwind column.

[0016] In one variant, it is conceivable for the hinge pins to be directed away from one another. In particular, the first hinge pin of the first column can extend out of the first column in the opposite direction to the second column, and the second hinge pin of the second column can extend out of the second column in the opposite direction to the first column. In further variants, it is possible for the hinge pins to be aligned in the same direction, in particular parallel or largely parallel to the bearing axis. For example, it is possible for the first hinge pin and the second hinge pin to each extend in a direction pointing from the first column to the second column. It is also possible for the first hinge pin and the second hinge pin to each extend in a direction pointing from the second column to the first column.In particular, the hinge pins can extend in a wind flow direction or extend against a wind flow direction.

[0017] The pivot bearing is furthermore particularly stable against undesired movements, in particular elastic deformations, if a hinge pin distance from a first hinge pin to a second hinge pin is greater than a sum of a first hinge pin length of the first hinge pin and a second hinge pin length of the second hinge pin. A hinge pin distance is to be understood in particular as a distance between the first hinge pin and the second hinge pin along the bearing axis. A hinge pin length of a hinge pin is to be understood in particular as a length of a hinge pin along the bearing axis. Advantageously, a main extension direction of a hinge pin and / or a main longitudinal extension direction of a hinge pin is aligned parallel or largely parallel to the bearing axis.If the first pivot pin and the second pivot pin are aligned with each other, the sum of the pivot pin spacing, the first pivot pin length, and the second pivot pin length corresponds to the distance from the first column to the second column. The pivot bearing is further stabilized against undesired movements, in particular elastic deformations, if a column width of one of the at least two columns is greater than a pivot pin length of the pivot pin of this column. A column width is to be understood in particular as an extension of the column in the direction of a main extension direction of the column's pivot pin. Particularly advantageously, the column width is a diameter of the column in the direction of the bearing axis.

[0018] According to the invention, the adapter base has a pin opening located below the pivot pin, which has an opening length that is greater than the pivot pin length, which has the advantage that a wiper arm can be mounted particularly easily on the pivot bearing. The pin opening increases the elastic outward deformability of the column in a direction counter to the orientation of the pivot pin, allowing a wiper arm to be easily clamped.

[0019] Particularly advantageous is an adapter unit comprising a base element and a cover element, wherein the base element is configured to receive the wiper blade and has the pivot bearing and the adapter base surface, wherein the cover element has the wind deflector surface and is designed to be connectable to the base element, and wherein, in particular, the cover element is designed to be firmly connected to the base element, so that the cover element connected to the base element is largely immobile relative to the base element. In this way, particularly favorable aerodynamics of a connection area between the adapter unit and the wiper blade can be ensured at any time during a wiping movement.

[0020] The cover element is advantageously formed integrally with the wind deflector surface. The cover element advantageously has a coupling element which is provided for connection to the base element. The cover element is advantageously formed integrally with the coupling element. A base element should be understood in particular to be an adapter which has a contact area to the wiper blade or to a wiper blade component and which can be connected to the wiper blade or the wiper blade component, advantageously can be firmly connected, in particular can be connected in such a way that the wiper blade is largely immovable relative to the base element when connected to the base element. The base element advantageously has a receiving element which is provided for coupling to the cover element or to the coupling element of the cover element. The wiper blade adapter unit is advantageously formed integrally with the contact area and / or with the receiving element.It is also conceivable for the base element to be formed integrally with the wiper blade or with a wiper blade component. Advantageously, the base element is formed integrally with the pivot bearing. Advantageously, the pivot bearing is designed such that the bearing axis is arranged perpendicular or largely perpendicular to a wiper arm direction.

[0021] Particularly advantageous is an adapter unit comprising a wiper arm adapter unit and a wiper blade adapter unit. The wiper blade adapter unit is configured to receive the wiper blade and has the pivot bearing and the adapter base surface. The wiper arm adapter unit is configured to receive the wiper arm and has the wind deflector surface. The pivot bearing is configured to support the wiper arm adapter unit. In this way, particularly favorable aerodynamics of a connecting area between the adapter unit and the wiper arm can be ensured at any time during a wiping movement.

[0022] Advantageously, the wiper arm adapter unit is formed integrally with the wind deflector surface and / or the pivot bearing. Advantageously, the wiper arm adapter unit can be firmly connected to the wiper arm, in particular such that the wiper arm, when connected to the wiper arm adapter unit, is largely immobile relative to the wiper arm adapter unit.

[0023] A wiper blade adapter unit is to be understood in particular as an adapter which has a contact area to the wiper blade or to a wiper blade component and which can be connected to the wiper blade or the wiper blade component, advantageously can be connected firmly, in particular can be connected in such a way that the wiper blade, when connected to the wiper blade adapter unit, is largely immobile relative to the wiper blade adapter unit. Advantageously, the wiper blade adapter unit is formed in one piece with the contact area and / or with the pivot bearing. It is also conceivable that the wiper blade adapter unit is formed in one piece with the wiper blade or with a wiper blade component. Advantageously, the Drawings

[0024] The drawings illustrate embodiments of the adapter unit according to the present invention and explain them in more detail in the following description. Figure 1a wiping device with an adapter unit, Figure 2 a section through the adapter unit, Figures 3 to 7 as well as 9 details and variants of a swivel bearing of the adapter unit and Figure 8 a cross-section through a variant of the adapter unit. Description

[0025] In the different versions, identical parts have the same reference numbers.

[0026] In the Figure 11 shows a schematic side view of a wiper device 10 having an adapter unit 12, a wiper arm 14, and a wiper blade 16. The wiper blade 16 is designed as a flat wiper blade. The wiper blade 16 is provided for cleaning a vehicle window 18. The adapter unit 12 has a cover element 20. The adapter unit has a base element 22. The wiper arm 16 has a wiper rod 24. In the exemplary embodiment, a main longitudinal extension direction of the wiper arm adapter unit is arranged parallel to a wiper arm direction 26. A main longitudinal extension direction of the wiper blade is arranged parallel to the wiper arm direction. In advantageous variants, the main longitudinal extension direction of the wiper arm adapter unit is arranged at least largely parallel to a wiper arm direction 26. In advantageous variants, the main longitudinal extension direction of the wiper blade is arranged at least largely parallel to the wiper arm direction.The cover element has a wind deflector surface 28.

[0027] Figure 2 shows a side view of the cover element and the base element in wiper arm direction 26. Figure 2 is a section along the line II-II in Figure 1 only without the wiper arm. The image plane of Figure 2 is arranged perpendicular to the wiper arm direction 26. The wind deflector surface 28 forms a main angle 32 of 35° with a wind flow direction 30. The main angle is spanned between the wind flow direction and a tangential plane of a mean normal vector 34 of the wind deflector surface. The tangential plane is perpendicular to the image plane of the Figure 2 or parallel to the wiper arm direction 26 and is in Figure 2 represented by an intersection angle of 35 between the tangential plane and the image plane. The wind deflector surface is convex along the wind flow direction.

[0028] In variants of the adapter unit, the wind deflector surface is convex in at least some areas, in particular convex along the wind flow direction. The term "convex" for a surface of the adapter unit is to be understood in particular as meaning that the surface is curved outward from the adapter unit. In further variants of the adapter unit, the wind deflector surface is concave in at least some areas, in particular concave along the wind flow direction. The term "concave" for a surface of the adapter unit is to be understood in particular as meaning that the surface into which the adapter unit is curved.

[0029] The base element has a pivot bearing 36, which is configured to pivotally support the wiper arm about a bearing axis 38. The pivot bearing comprises a first column 40. The first column 40 is a windward column. The first column is oriented perpendicular to an adapter base surface 44. The pivot bearing comprises a second column 42. The second column 42 is a downwind column. The second column is oriented perpendicular to the adapter base surface 44.

[0030] The first column has a first height 46 of 6 mm. The second column has a second height 48 of 10 mm. The first height 46 is smaller than the second height. In variants, the first height is between 2 mm and 10 mm, preferably between 4 mm and 8 mm. In variants, the second height is between 6 mm and 14 mm, preferably between 8 mm and 12 mm. The first height is preferably smaller than the second height. The choice of the values ​​for the first height and the second height depends on the technical requirements of the adapter unit, in particular on a specified main angle 32.

[0031] The first column has a first pivot pin 50. The second column has a second pivot pin 52. The first pivot pin and the second pivot pin are aligned with each other. The first pivot pin is arranged parallel to the bearing axis 38. The second pivot pin is arranged parallel to the bearing axis 38.

[0032] Figure 3shows a detailed view of a first column 40 of an alternative variant of the adapter unit. Figure 4 shows a view of the first column 40 in the direction of arrow IV in Figure 3. Arrow IV is arranged parallel to the bearing axis. The first hinge pin 50 is composed in one piece of a first cylinder 54 and half a hollow truncated cone segment 56. The half a hollow truncated cone segment 56 is arranged on a pin underside facing the adapter base surface 44. The half a hollow truncated cone segment 56 is arranged with a wider end on the first column 40. The first hinge pin has a first pin radius 58 of 2 mm. The first pin radius is a radius of the first cylinder 54. The first hinge pin has the first pin radius on a pin upper side facing away from the adapter base surface. Due to the half a hollow truncated cone segment 56, the first pin has a second pin radius 60 of 3 mm on the pin underside on the first column. The first cylinder and the first hinge pin, respectively, have a first hinge pin length 62 of 4 mm. The half hollow truncated cone segment 56 has a hollow truncated cone segment length 64 of 1 mm.Other dimensions of the first joint pin are also conceivable; these depend on the technical requirements. In particular, the first joint pin length can be between 1 mm and 6 mm, preferably between 2 mm and 5 mm, particularly preferably between 3 mm and 4 mm. A first pin radius can be between 1 mm and 6 mm, preferably between 2 mm and 5 mm, particularly preferably between 3 mm and 4 mm. Figure 5 shows a top view of the first column in the direction of arrow V in Figure 3 . Arrow V is perpendicular to the adapter base. Figure 6 shows a view of the first column from the direction of arrow VI in Figure 3 Arrow VI is aligned parallel to the bearing axis. The first column has three ribs 66. The ribs are each arranged perpendicular to the adapter base. The ribs 66 are formed integrally with the first column.

[0033] Figure 7shows the pivot bearing 36 of an alternative variant of the adapter unit. The first pivot pin and the second pivot pin have a pivot pin spacing of 6 mm (68). The first pivot pin has a first pivot pin length of 2 mm (62). The second pivot pin has a second pivot pin length of 3 mm (70). The sum of the first pivot pin length and the second pivot pin length is less than the pivot pin spacing.

[0034] A first column width 72 of the first column 40 is 5 mm. The first column width 72 is greater than the first pivot pin length 62. The first column width 72 is arranged parallel to the bearing axis. A second column width 74 of the second column 42 is 4 mm. The second column width 74 is greater than the first pivot pin length 70. The second column width 74 is arranged parallel to the bearing axis.

[0035] The adapter base 44 has a first pin opening 76 below the first pivot pin. The first pin opening has a first opening length 78 of 3.5 mm. The first opening length is greater than the first pivot pin length. The first opening length is aligned parallel to the bearing axis.

[0036] The adapter base 44 has a second pin opening 80 below the second pivot pin. The second pin opening has a second opening length 82 of 3.5 mm. The second opening length is greater than the second pivot pin length. The second opening length is aligned parallel to the bearing axis.

[0037] Preferably, one pin opening has an opening width arranged parallel to the adapter base surface and perpendicular to the bearing axis, which is greater than the largest pin radius of the hinge pin arranged above it. Preferably, the pin opening is dimensioned such that a vertical projection of the hinge pin onto the adapter base surface lies entirely within the pin opening.

[0038] In the exemplary embodiment, the cover element 20 can be firmly connected to the base element 22 via a snap-in connection (not shown). The cover element connected to the base element is largely immovable relative to the base element. The base element 22 has the pivot bearing 36. The cover element covers the pivot bearing. The pivot bearing is designed to couple to the wiper arm so that the wiper arm can rotate about the bearing axis 38 (see Figure 2) is pivotable or rotatable. In the exemplary embodiment, the bearing axis 38 is aligned parallel to the wind flow direction 30. The base element 22 is designed to receive the wiper blade 16 via a plug connection (not shown).

[0039] Figure 8shows a section through an alternative embodiment of the adapter unit perpendicular to the wiper arm direction 26. The adapter unit 12 has a wiper arm adapter unit 84. The wiper arm adapter unit has the wind deflector surface 28. The wiper arm adapter unit has a wiper arm opening 86 which is designed to receive the wiper arm. The wiper arm opening is an opening for a receiving channel into which the wiper arm can be inserted. The receiving channel runs largely parallel to the wiper arm direction. In the exemplary embodiment, the wiper arm adapter unit has a fixing means (not shown) which is provided for a detachable coupling of the wiper arm to the wiper arm adapter unit. In the coupled state, the wiper arm is firmly connected to the wiper arm adapter unit. When connected to the wiper arm adapter unit, the wiper arm is largely immobile relative to the wiper arm adapter unit.The wiper arm adapter unit 84 has a connecting element 88, which is intended to be pivotably coupled to a wiper blade adapter unit 90 about the bearing axis 38. The wiper blade adapter unit 90 is designed to receive the wiper blade 16. The wiper blade adapter unit 90 has the pivot bearing 36. The pivot bearing comprises the first column 40 and the second column 42. The connecting element has two plates 92 arranged parallel to one another. The plates 92 are spaced apart from one another by half the length of a pivot pin—the shorter of the two pivot pins—shorter than the distance from the first column to the second column. In this way, the plates fit between the two columns. The plates each have a largely round opening designed to receive the pivot pin. The plates 92 are elastic and can be elastically deflected relative to one another.This allows the connecting element to snap into the pivot bearing. When mounting the wiper arm adapter unit onto the wiper blade adapter unit, the plates are inserted into an inner space between the columns and elastically moved toward each other. Upon insertion, the openings in the plates each accommodate a pivot pin, and the plates are elastically aligned parallel to each other.

[0040] Figure 9shows an advantageous variant of the pivot bearing. The hinge pins each have a bevel 94 on their upper side. The bevels form a bevel angle of 20° with a normal to the adapter base surface. In variants, the bevel angle is between 5° and 45°, preferably between 15° and 35°, particularly preferably between 25° and 30°. In further variants, an outer surface 98 of the hinge pin has at least one bevel, at least in some regions. In preferred variants, the hinge pin length decreases, at least in some sections, with increasing distance from the adapter base surface.

[0041] In advantageous embodiments, the wind deflector surface 28 has a modified or special surface structure. The surface can be roughened at least in some areas and / or have a sharkskin texture and / or a golf ball texture. Such a surface structure influences the airflow flowing over it. In this way, the aerodynamic properties of the wind deflector surface can be improved. In particular, it is possible to precisely adjust the contact forces acting on the wind deflector surface by selecting the type and arrangement of the modified surface structure.

Claims

1. Adapter unit (12) provided for coupling, in particular releasable coupling, of a wiper blade (16) to a wiper arm (14), having a wind deflector surface (28) which is configured to deflect an incident flow of air and to press the wiper blade (16) against a vehicle window, and having a pivot bearing (36) which is configured to mount the wiper arm (14) pivotably relative to the wiper blade (16), wherein the pivot bearing (36) has at least two columns (40, 42) arranged largely vertically on an adapter base surface (50, 52), wherein each of the columns (40, 42) has a respective hinge pin (50, 52) which is oriented parallel or largely parallel to a bearing axis (38) and is provided for mounting the wiper arm (14) and / or a wiper arm adapter unit (84), wherein a column (40) of the at least two columns (40, 42) that faces the wind has a lower height than a column (42) of the at least two columns (40, 42) that faces away from the wind, in particular wherein a height of the at least two columns (40, 42) corresponds to a height profile of the wind deflector surface (28), characterized in that the adapter base surface (44) has a pin opening (76) which is arranged under the hinge pin (50, 52) and which has an opening length (78) greater than the hinge pin length (62).

2. Adapter unit (12) according to Claim 1, characterized in that the wind deflector surface (28) encloses a main angle of between 25° and 65°, preferably of between 40° and 50°, with the bearing axis (38).

3. Adapter unit (12) according to one of the preceding claims, characterized in that the hinge pins (50, 52) have a larger pin radius (58, 60) on a pin underside facing the adapter base surface (44) than on a pin upper side facing away from the adapter base surface (44).

4. Adapter unit (12) according to one of the preceding claims, characterized in that the at least two columns (40, 42) have a plurality of ribs (66) which are provided for strengthening the columns (40, 42), the ribs (66) preferably being arranged on a side of a column (40, 42) opposite the hinge pin (50, 52).

5. Adapter unit (12) according to one of the preceding claims, characterized in that the hinge pins (50, 52) of the at least two columns (40, 42) are aligned with each other.

6. Adapter unit (12) according to one of the preceding claims, characterized in that a hinge pin distance (68) from a first hinge pin (50) to a second hinge pin (52) is greater than a sum of a first hinge pin length (62) of the first hinge pin (50) and a second hinge pin length (70) of the second hinge pin (52).

7. Adapter unit (12) according to one of the preceding claims, characterized in that a column width of one of the at least two columns (40, 42) is greater than a hinge pin length (62, 70) of the hinge pin (50, 52) of this column (40, 42).

8. Adapter unit (12) according to one of the preceding claims, characterized by a base element (22) and a cover element (20), wherein the base element (22) is configured to receive the wiper blade (16) and has the pivot bearing (36) and the adapter base surface (44), wherein the cover element (20) has the wind deflector surface (28) and is designed to be connectable to the base element (22), and wherein in particular the cover element (20) is designed to be firmly connectable to the base element (22), such that the cover element (20) connected to the base element (22) is largely immovable relative to the base element (22).

9. Adapter unit (12) according to one of the preceding claims, characterized by a wiper arm adapter unit (84) and a wiper blade adapter unit (90), wherein the wiper blade adapter unit (90) is configured to receive the wiper blade (16) and has the pivot bearing (36) and the adapter base surface (44), wherein the wiper arm adapter unit (84) is configured to receive the wiper arm (14) and has the wind deflector surface (28), and wherein the pivot bearing (36) is configured to mount the wiper arm adapter unit (84).