Coupling device

Abstract

The invention relates to a coupling device, in particular a scraper arm coupling device, comprising at least one connecting element (12) and at least one first coupling unit (14), which is arranged in an assembled state to be connected to a scraper rod (16) of a scraper arm (18) and at least partially accommodates a scraper liquid channel (20), and the first coupling unit is connected to the at least one connecting element (12) in a first region (24) of the at least one connecting element (12). The invention proposes that the coupling device comprises at least one second coupling unit (22), which is arranged in an assembled state to be connected to a scraper rod (16) of the scraper arm (18) and at least partially accommodates the scraper liquid channel (20), and the second coupling unit is connected to the at least one connecting element (12) in a second region (32) of the at least one connecting element (12) which is arranged differently from the first region (24) along a main extension direction (66).

Description

Background Art

[0001] A coupling device, in particular a wiper arm coupling device, has been disclosed, which has at least one connecting element and has at least one first coupling unit, which is arranged in the assembled state to be connected to the wiper rod of the wiper arm and at least partially accommodates a wiper liquid channel, and the first coupling unit is connected to the at least one connecting element. Summary of the invention

[0002] The present invention relates to a coupling device, in particular a scraper arm coupling device, which has at least one connecting element and at least one first coupling unit, wherein the first coupling unit is arranged in an assembled state to be connected to a scraper rod of a scraper arm and to at least partially accommodate a scraping liquid channel, and the first coupling unit is connected to the at least one connecting element in a first area of ​​the at least one connecting element.

[0003] The present invention proposes that the coupling device has at least one second coupling unit, which is arranged in an assembled state to be connected to a scraping rod of a scraping arm and at least partially accommodates a scraping liquid channel, and the second coupling unit is connected to at least one connecting element in a second region of at least one connecting element that is arranged differently from the first region along the main extension direction. Preferably, the two coupling units are arranged to make the scraping rod contact in different, especially mutually spaced regions. Preferably, the first coupling unit is bent relative to the second coupling unit in an assembled state. The two coupling units are especially connected only by the connecting element.

[0004] "Coupling device" should especially refer to at least a part, especially a sub-component group, of a wiper, especially a glass wiper, advantageously a vehicle glass wiper and particularly advantageously a motor vehicle glass wiper. In particular, the coupling device is configured to couple with a wiper arm. "Configuration" should especially be understood as being specially programmed, designed and / or equipped. "Objects configured for specific functions" should especially mean that the objects meet and / or implement such specific functions in at least one use state and / or operating state. The wiper arm is especially connected to a wiper motor at one end. The wiper arm is especially formed by an elongated element of a glass wiper, which transmits the wiping motion from the wiper motor to a wiper blade arranged on the opposite end of the end connected to the wiper motor. "Wipe blade" should especially refer to a component that is composed of a plurality of elements, such as especially at least one wiper lip and is configured to completely abut against the glass to be wiped with the wiper lip, wherein the wiper lip wipes the glass in at least one operating state.

[0005] In addition, "scraper rod" should be understood as an elongated component of the scraper arm, which extends at least substantially parallel to the main extension direction of the scraper arm in sections. "At least substantially parallel in sections" should especially mean that the main extension direction of a partial area of ​​the element deviates by a maximum of 45°, preferably a maximum of 30° relative to the reference direction, especially relative to the main extension direction of the scraper arm in this partial area. Preferably, the scraper rod should be understood as a component that is configured to connect the drive shaft of the scraper arm indirectly to a receiving area for the scraper blade in order to transmit movement, especially rotational movement. Preferably, this should be understood as a rigid component that is configured to transmit the drive movement and / or pressing force of the scraper arm at least indirectly to the receiving area for the scraper blade. The scraper rod is preferably made of metal. For example, it is conceivable that the scraper arm has at least one bend that divides the scraper arm into at least two sections, and the two sections have different main extension directions, especially "section-type main extension directions". In this case, the scraper bar is arranged at least substantially parallel to the main extension direction of the scraper arm in each of the two sections. The scraper bar preferably extends substantially over the entire main extension length of the scraper arm. "Main extension direction" should be understood in particular as a direction that extends parallel to the longest edge of the smallest geometric cuboid that just fully surrounds the object. "Main extension length" should be understood as the maximum length that the object has along its main extension direction.

[0006] Furthermore, a "wiping liquid channel" is to be understood in particular as a channel which is provided for guiding, in particular at least in a section, during operation a wiping liquid, in particular from a reservoir, to a wiping nozzle element for discharging the wiping liquid. Preferably, this is to be understood as a channel which is provided in at least one section for receiving the wiping liquid for guidance and / or delivery. Particularly preferably, this is to be understood as a channel which is provided in at least one operating state for directly receiving the wiping liquid. Preferably, a "wiping nozzle element" is to be understood as an element having a connection to a wiping liquid channel, which element comprises at least one opening for discharging the wiping liquid, in particular onto the windshield.

[0007] A "connecting element" should in particular be understood to mean an element which is provided for connecting an object to at least one other object. Preferably, at least one, in particular exactly one, connecting element connects at least one first coupling unit to at least one second coupling unit. Preferably, the connecting element has a main extension length which corresponds at least to the main extension length of the first coupling unit plus at least the main extension length of the second coupling unit. The main extension length of the connecting element is preferably longer than the main extension length of the first coupling unit plus the main extension length of the second coupling unit, in particular at least 0.25 cm longer, preferably at least 0.5 cm longer, and particularly preferably at least 1 cm longer. However, in principle, it is also conceivable that the connecting element is arranged only between the first coupling unit and the second coupling unit. The connecting element preferably comprises at least three regions along its main extension direction, in particular at least two end regions, each of which comprises the ends of the connecting element in one main extension direction and comprises an intermediate region located therebetween. Preferably, the connecting element is connected to the first coupling unit in a first region of the connecting element, in particular in the first end region. Preferably, the connecting element is connected to the second coupling unit in a second region of the connecting element which is different from the first region along the main extension direction, in particular in the second end region. The connecting element is preferably configured as a wind deflector element. A "wind deflector element" should particularly be understood to mean an element that is configured to divert the wind acting on the wiper arm device and / or to press the coupling device against the wiper arm. Preferably, the connecting element has at least one concave outer surface. Preferably, the concave outer surface is defined on one side by a splitter edge. This allows for advantageous aerodynamics, which are particularly useful for pressing the coupling device at high speeds.

[0008] In addition, "coupling unit" should be understood as a unit that is configured to establish a connection, especially a connection that can be detached without destruction. Preferably, it should be understood as a unit that is configured to at least connect the coupling device to the scraper rod and the scraper liquid channel of the scraper arm in a form-locked, force-locked and / or material-locked manner. Particularly preferably, it should be understood as a unit that is configured to establish a connection that can be detached without destruction, wherein the connection can be established without tools at this point. At least one first coupling unit and at least one second coupling unit define a receiving area, respectively. "Accommodating area" should be understood as an area that is configured to accommodate components to be coupled. Preferably, the accommodating area has a cross-sectional shape that is cut perpendicular to the main extension direction of the coupling unit, and the cross-sectional shape at least approximately corresponds to the cross-sectional shape of at least two components to be accommodated, especially the scraper rod and the scraper liquid channel.

[0009] Particularly preferably, the accommodating area is surrounded by corresponding coupling units in an angular range of at least 90°, preferably at least 120° and particularly preferably at least 180° in at least one plane (starting from the center of the accommodating area and observing in the plane). Particularly preferably, the accommodating area is surrounded by corresponding coupling units and connecting elements in an angular range of at least 120°, preferably at least 180° and particularly preferably at least 270° in at least one plane (starting from the center of the accommodating area and observing in the plane). Preferably, the first coupling unit and / or the second coupling unit have a constant cross-section along the main extension direction. The accommodating areas of the at least one first coupling unit and the at least one second coupling unit preferably have an opening area respectively. "Opening area" should especially refer to a region, preferably a non-substantial region, which is preferably adjacent to the at least one accommodating area and is directly connected to the surroundings of the guide plate unit through at least one adjacent accommodating area of ​​the region. Preferably, this should be understood as such a region, through which at least one adjacent accommodating area is directly connected to the surroundings of the coupling device in a plane perpendicular to the main extension direction of the accommodating area and / or the guide plate unit. Particularly preferably, this should in particular be understood as a region in which, viewed in a plane perpendicular to the main extension direction of the receiving area and / or of the coupling device, at least one adjacent receiving area is not physically limited by at least one first coupling unit and / or at least one second coupling unit.

[0010] Preferably, at least one connecting element is integrally constructed with at least one first coupling unit and at least one second coupling unit. Preferably, at least one connecting element and at least one first coupling unit and at least one second coupling unit are formed by one component. "Integrally" should be understood in particular as being connected at least in a materially locked manner, for example, by a welding process, an adhesive process, an injection molding process and / or other processes that are considered meaningful by a person skilled in the art, and / or advantageously formed into a component, such as, for example, by being manufactured by a casting and / or by being manufactured by a single-component or multi-component injection molding process or an extrusion process, preferably a co-extrusion process, and advantageously manufactured by a single blank. Preferably, this should be understood in particular as being one-piece, particularly preferably manufactured by a deformation process. Thus, an advantageous coupling device can be provided. Preferably, the number of components can be kept small, thereby particularly enabling advantageously simple and rapid assembly.

[0011] The design of the coupling device according to the invention can in particular provide an advantageously variable coupling device. In particular, the coupling device can be matched to the scraper rod. In particular, the bending direction of the coupling device on the scraper rod can be realized. In particular, a twisting and bending adjustable (schränkungs- und biegeanpassungsfähige) coupling device can be provided. In particular, the coupling can be realized only via an opening area by the coupling unit. In particular, the advantageous and simple assembly of the coupling device, for example, on a curved scraper rod can be realized thereby. Particularly advantageously, a hose guide of the scraper liquid channel that is largely invisible can be realized. In addition, a hose guide to the scraper liquid channel can be advantageously realized, which is close to the scraper arm direction. In this way, an advantageous transport handling of the coupling device can also be realized, wherein the risk of the hose of the scraper liquid channel being hooked anywhere is reduced.

[0012] It is further proposed that the at least one connecting element has at least one other region along its main extension, which is configured without the first coupling unit and without the second coupling unit. Preferably, the other region is arranged in the center between the first end region and the second end region. Preferably, the connecting element has an intermediate region between the first coupling unit and the second coupling unit. Preferably, the intermediate region is configured without the first coupling unit and without the second coupling unit. Particularly preferably, the intermediate region of the connecting element is arranged between the first region of the main extension, in particular the end region of the main extension configured to be connected to the first coupling unit, and the second region of the main extension, in particular the end region of the main extension configured to be connected to the second coupling unit. As a result, an advantageous bending of the connecting element can be achieved in another, in particular intermediate region, independently of the coupling unit.

[0013] It is further proposed that the connecting element is made of a material different from the first coupling unit and the second coupling unit. Preferably, at least one connecting element is made of at least one material, which is different from at least one material used to form the coupling unit. Preferably, at least one connecting element is made of a material with bendable and / or stretchable and / or flexible properties. Preferably, the at least one connecting element is made of plastic, especially a rubber-like plastic material such as rubber. Preferably, the material used to form the connecting element is softer, especially more flexible and / or more stretchable and / or more bendable than at least one material used to form the coupling unit. This can advantageously provide a coupling device for a curved scraper arm path.

[0014] It is further proposed that at least one first coupling unit and at least one second coupling unit are manufactured with the connecting element in a coextrusion process. Preferably, at least one first coupling unit and at least one second coupling unit are manufactured from the same material. Preferably, the coupling unit is made of a rigid material. This can create an advantageous combination of a rigidly supported coupling unit and a flexible connecting element. In particular, this can form a stable coupling device that is largely flexible along its main extension axis.

[0015] In addition, it is proposed that the at least one first coupling unit and the at least one second coupling unit extend on the main part of the main extension range of the connecting element, respectively. "The main part of the main extension range of the element" should be understood as at least 10%, preferably at least 20%, and particularly preferably at least 40% of the extension range of the element along the main extension range of the element. The at least one first coupling unit extends along the main extension axis of the connecting element from the first end of the connecting element along at least 10%, preferably at least 20%, and particularly preferably at least 30% of the main extension range of the connecting element in the first region, especially in the end region. The at least one second coupling unit extends along the main extension axis of the connecting element from the second end of the connecting element along at least 10%, preferably at least 20%, and particularly preferably at least 30% of the main extension range of the connecting element in the second region, especially in the end region. Thus, an advantageous bearing effect of the coupling unit for scraping the liquid channel can be achieved. In addition, an advantageous bearing effect of the connecting unit for the coupling unit can be achieved.

[0016] It is further proposed that the connecting element abuts against the scraper rod in the assembled state and defines at least one cavity with the scraper rod in the circumferential direction. At least one, in particular exactly one, connecting element preferably abuts against the scraper rod in a form-locking manner in the assembled state. Preferably, the at least one connecting element abuts against at least one scraper rod in at least two, in particular exactly two contact areas in the assembled state. Preferably, the contact area extends over the entire main extension length of the connecting unit. Preferably, the contact area is configured as a contact surface. Preferably, the contact surface is at least substantially rectangular at least in the first and second areas of the connecting element. Preferably, a cavity is configured between the contact surfaces. Preferably, the cavity has a substantially trapezoidal cross section perpendicular to its main extension axis. The longest side of the trapezoidal cross section is preferably adjacent to the scraper rod. Preferably, the other sides of the trapezoidal cross section of the cavity are adjacent to the connecting element. Preferably, the cavity is formed by a recess in the connecting element. Preferably, the cavity extends over the entire main extension length of the connecting element. The bendability of the connecting element can thus be advantageously achieved. This advantageously makes it possible to simplify assembly, in particular for the angled region of the scraper bar.

[0017] In addition, it is proposed that the at least one first coupling unit and the at least one second coupling unit respectively have two fixed tabs, which are spaced apart from each other and connected to each other by the at least one connecting element. The first coupling unit and the second coupling unit respectively include at least two fixed tabs, which respectively have two accommodating elements. The fixed tabs are respectively at least partially composed of accommodating elements. The fixed tabs respectively have a region with a cross-sectional shape of at least substantially C in a plane perpendicular to the main extension direction of the connecting element. The fixed tabs respectively have a region with a cross-sectional shape of at least substantially J in a plane perpendicular to the main extension direction of the connecting element. The region that is C-shaped in the cross section constitutes a accommodating element for partially coupling with the scraping rod. The region that is C-shaped in the cross section abuts against the scraping rod laterally along the scraping direction in the assembled state. The region that is J-shaped in the cross section constitutes a accommodating element for partially coupling with the scraping liquid channel. The region that is J-shaped in the cross section abuts against the scraping liquid channel laterally along the scraping direction in the assembled state. The accommodating elements of the fixed tabs are respectively constructed in one piece. The fixed tabs are arranged in a mirror image to each other. The inner camber of the C-shaped region of the fixed strap in the cross section is arranged facing each other. The suspended (freestehend) ends of the J-shaped region of the fixed strap in the cross section face each other respectively. The fixed straps of each of the two mirror images constitute the first and second coupling units. The fixed straps of the first and second coupling units are connected to each other by a connecting element. The two C-shaped regions of the fixed strap in the cross section are directly adjacent to the connecting element. The two C-shaped regions of the fixed strap in the cross section are directly adjacent to the two J-shaped regions of the fixed strap in the cross section at the side away from the connecting element. The two C-shaped regions of the fixed strap in the cross section are connected to the two J-shaped regions of the fixed strap in the cross section on the side away from the connecting element, especially force-locked, preferably material-locked. The two C-shaped regions of the fixed strap in the cross section are preferably constructed in one piece with the two J-shaped regions of the fixed strap in the cross section. Advantageously, the stable accommodation of the scraping rod and / or the scraping liquid channel can be realized thereby. Thus, a coupling device that saves materials and can be intuitively assembled can be advantageously constructed.

[0018] Furthermore, the invention relates to a scraper arm arrangement having a coupling device.

[0019] In addition, a wiper arm device with at least one wiper rod is proposed, the wiper rod having at least one first rod area with a first main extension direction and / or a main extension plane and at least one adjacent second rod area with a second main extension direction and / or a main extension plane, wherein the main extension directions and / or main extension planes of at least two rod areas form an angle different from 180° with respect to each other, and in the assembled state, the at least one first coupling unit is arranged in the at least one first rod area and the at least one second coupling unit is arranged in the at least one second rod area. Advantageously, the coupling unit can prevent bending and / or twisting of the two partial areas of the wiper arm by means of free elastic areas.

[0020] In addition, the present invention proposes a method for manufacturing a coupling device. Preferably, in at least one method step, the connecting element is made of different materials from at least one first coupling unit and at least one second coupling unit in a co-extrusion process. In at least one method step, the connecting element is extruded from a material different from the at least one coupling unit and the at least one second coupling unit. In at least one method step, the at least one first coupling unit is extruded from the same material as at least another coupling unit. In at least one method step, at least one first coupling unit is manufactured and extruded separately from at least one second coupling unit by a material supply stop, wherein the material of the connecting element is further extruded. Alternatively, it is conceivable that in at least one method step, the connecting element is made of different materials from at least one first coupling unit and at least one second coupling unit in a two-component injection molding process. In at least one method step, at least one first coupling unit is manufactured and injection molded separately from at least one second coupling unit by a material supply stop. Thus, the twisting change of the scraper rod of the scraper arm is advantageously prevented by the coupling unit.

[0021] The coupling device according to the invention should not be limited to the above-described applications and embodiments. In particular, the coupling device according to the invention can have a number of individual elements, components and units different from the number mentioned here in order to meet the mode of action described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Further advantages are given by the following description of the drawings. An embodiment of the present invention is shown in the drawings. The drawings, the description and the claims contain a large number of combined features. A person skilled in the art can also appropriately consider these features individually and summarize other meaningful combinations. It is shown therein:

[0023] Figure 1 A schematic diagram shows a wiper arm arrangement with a coupling device according to the invention, with a wiper nozzle element, with a wiper arm and a wiper blade,

[0024] Figure 2 The coupling device according to the invention with the connecting element and the first coupling unit is shown in a schematic sectional view along the section line II in the assembled state.

[0025] Figure 3 The coupling device according to the invention with the connecting element and the first coupling unit is shown in a schematic sectional view along the section line III in the assembled state.

[0026] Figure 4 A schematic side view shows a coupling device according to the invention with a connecting element and a first and a second coupling unit in an unassembled state,

[0027] Figure 5 The coupling device according to the invention with the connecting element and the first coupling unit is shown in a schematic sectional view along the section line II in a partially assembled state, and

[0028] Figure 6 A method for producing a coupling device is shown schematically. DETAILED DESCRIPTION

[0029] Figure 1 A wiper arm arrangement 40 is shown with a coupling device 10 according to the invention, a wiper arm 18 and a wiper blade 42. In addition, Figure 1 A detail of a surface 44 to be cleaned, in particular a window pane, of a motor vehicle is shown (not shown in detail).

[0030] The wiper arm 18 has a wiper rod 16. The wiper arm 18 has two wiper arm segments 48, 48' and a hinge 46. The wiper arm segments 48, 48' are connected via a hinge 46. The second wiper arm segment 48' includes the wiper rod 16. In addition, a spring element that cannot be seen further is arranged in the surroundings of the hinge 46. The spring element that cannot be seen further is provided for pressing the second wiper arm segment 48' in the pressing area of ​​the second wiper arm segment 48' toward the direction of the surface 44 to be cleaned. The surface 44 to be cleaned is formed by a motor vehicle glass. The first wiper arm segment 48 is connected to the motor vehicle that cannot be seen further. The first wiper arm segment 48 is connected to the wiper rod 16 on the outer end of the wiper arm 18 along the main extension direction 66 of the wiper arm 18. The first wiper arm segment 48 is driven by a drive motor that cannot be seen further. A wiper arm adapter 54 is arranged on the end of the second wiper arm segment 48' that faces away from the hinge 46. The wiper arm adapter 54 is fixedly connected, in particular is formed integrally with the second wiper arm segment 48 ′. The wiper arm adapter 54 is provided for accommodating a wiper blade adapter 56 of the wiper blade 42 .

[0031] The scraper blade 42 has a scraper blade adapter 56. The scraper blade 42 has a scraper blade adapter 56 for coupling with the scraper arm 18. In addition, the scraper blade 42 has a scraper blade guide plate unit 50, at least one spring bar that cannot be seen further, at least one scraper lip that cannot be seen further, and two end caps 58, of which only one end cap is visible. The scraper blade 42 scrapes on the surface 44 to be cleaned in the operating state. The scraper lip of the scraper blade 42 that cannot be seen further is provided during the scraping operating state to rest on the surface 44 to be cleaned and scrape thereon.

[0032] The wiper lip, which cannot be seen further, is held in the wiper blade and deflector unit 50 by means of spring strips, which cannot be seen further.

[0033] The scraping arm device 40 has a scraping liquid channel 20 (see Figure 2 ). The scraping liquid channel 20 is provided for guiding the scraping liquid along the scraping arm 18. The scraping liquid channel 20 is formed by a hose. In addition, the scraping liquid channel 20 is constructed to be substantially hollow cylindrical. In addition, the scraping arm device 40 has a scraping nozzle element 60. The scraping nozzle element 60 is arranged in the surrounding environment of the scraping blade in a plug-in or integrated manner on the scraping arm. The scraping nozzle element 60 is composed of a nozzle. In addition, the scraping nozzle element 60 is provided for applying the scraping liquid to the surface 44 to be cleaned. The scraping nozzle element 60 is provided for applying the scraping liquid to the glass. The scraping nozzle element 60 is integrated into the base 62. The scraping nozzle element 60 is connected to the joint for the scraping liquid channel 20 which cannot be further seen. In addition, the scraping nozzle element 60 has a coupling element which cannot be further seen. The coupling element which cannot be further seen of the scraping nozzle element 60 is provided for connecting to the scraping arm adapter 54 of the scraping arm 18 in the assembled state. The coupling element (not further visible) of the scraper nozzle element 60 is coupled to the scraper arm adapter 54. The scraper liquid channel 20 is connected to the scraper nozzle element 60 via a joint (not further visible). At the end of the scraper liquid channel 20 facing away from the scraper nozzle element 60, the scraper liquid channel 20 is connected to a scraper liquid supply (not further visible) at a point (not further visible).

[0034] The scraper bar 16 of the scraper arm 18 has two bar regions 38, 38'. The scraper bar 16 has at least one first bar region 38 with a first main extension direction 52 and / or a main extension plane and at least one adjacent second bar region 38' with a second main extension direction 64 and / or a main extension plane, wherein the main extension directions 52, 64 and / or the main extension planes of at least two bar regions 38, 38' form an angle 30 different from 180° with respect to each other.

[0035] The wiper arm device 40 comprises a coupling device 10, in particular a wiper arm coupling device, which has at least one connecting element 12 and at least one first coupling unit 14. The coupling device 10 is provided in an assembled state for connecting to a wiper rod 16 of a wiper arm 18. The coupling device 10 is provided for at least partially accommodating a wiper liquid channel 20 in an assembled state. The first coupling unit 14 is connected to the at least one connecting element 12 in a first region 24 of the at least one connecting element 12. The coupling device 10 comprises at least one second coupling unit 22, which is provided in an assembled state for connecting to the wiper rod 16 of the wiper arm 18 and for at least partially accommodating the wiper liquid channel 20. The second coupling unit 22 is connected to the at least one connecting element 12 in a second region 32 of the at least one connecting element 12, which is arranged differently from the first region 24 along the main extension direction 66 of the wiper arm 18. The first coupling unit 14 and the second coupling unit 22 are provided for connecting to a second wiper arm segment 48' of the wiper rod 16. At least one connecting element 12 has at least one further region 26 along its main extension direction 66, which is designed without the first coupling unit 14 and without the second coupling unit 22. The connecting element 12 is made of a different material than the first coupling unit 14 and the second coupling unit 22. The at least one first coupling unit 14 and the at least one second coupling unit 22 each extend over a major part of the main extension range of the connecting element 12. The at least one first coupling unit 14 and the at least one second coupling unit 22 are manufactured with the connecting element 12 in a co-extrusion process. The coupling device 10 follows the path of the scraper arm 18 between the end regions of the scraper arm 18 in the assembled state. The coupling device 10 guides the scraper liquid channel 20 along the curved portion of the scraper arm 18. In the assembled state, the at least one first coupling unit 14 is arranged in the at least one first shaft region 38, and the at least one second coupling unit 22 is arranged in the at least one second shaft region 38'.

[0036] Figure 2 The first coupling unit 14 of the coupling device 10 with the connecting element 12 is shown in a mounted state in cross section II. The first coupling unit 14 has a main extension direction 52 which, in the mounted state, differs from a main extension direction 66 of the wiper arm 18 .

[0037] The coupling device 10 has a connecting element 12. The connecting element 12 extends over the entire length of the coupling device 10 when viewed along the main extension direction 66 of the coupling device 10. The coupling device 10 is partially formed as a wiper arm deflector element. The connecting element 12 of the coupling device 10 is configured as a deflector element, in particular a wiper arm deflector element. The connecting element 12 is configured approximately triangularly when viewed in a plane II perpendicular to the main extension direction 52 of the coupling device 10. The largest outer side of the connecting element 12 is concavely curved in this plane. The second outer side 70 of the connecting element 12 is convexly curved in the middle area 68 in this plane.

[0038] The connecting element 12 bears against the scraper rod 16 in the assembled state and delimits at least one cavity 28 with the scraper rod 16 in the circumferential direction. The cavity 28 extends over the entire length of the connecting element 12, in particular, as viewed along the main extension direction 66 of the coupling device 10. The cavity 28 has a substantially trapezoidal outer contour, as viewed in a plane perpendicular to the main extension direction 66 of the coupling device 10. The longest side of the trapezoidal outer contour adjoins the scraper rod 16 in the assembled state.

[0039] At least one first coupling unit 14 and at least one second coupling unit 22 respectively have two fixing lugs 34, 34', 36, 36'. Each two fixing lugs 34, 34', 36, 36' are spaced apart from each other. Each two fixing lugs 34, 34', 36, 36' are connected to each other by at least one connecting element 12. The first coupling unit 14 and the second coupling unit 22 include at least two fixing lugs 34, 34', 36, 36', which respectively have two accommodating elements 74, 74', 76, 76', 78, 78', 80, 80'. The fixing lugs 34, 36 are respectively arranged at the connecting element 12. The fixing lugs 34, 36 are respectively connected to the connecting element 12 on the second outer side 70 of the connecting element 12 along the main extension range. The fixing lugs 34, 36 are respectively connected to the connecting element 12 at the second outer side 70 of the connecting element 12 in the lateral end areas 72, 72' in the cross section II.

[0040] The fixing lugs 34, 36 of the first coupling unit 14 are each at least partially, in particular completely, formed by a receiving element 74, 76, 78, 80. The fixing lugs 34, 36 each have a receiving element 74, 76 with an at least substantially C-shaped cross-sectional shape in a plane II perpendicular to the segmented main extension direction 52 of the connecting element 12. The receiving elements 74, 76, which are C-shaped in cross section II, are configured for partial coupling with the scraper rod 16. The receiving elements 74, 76 are laterally abutted against the scraper rod 16 in the assembled state in the scraping direction.

[0041] The fixing tabs 34, 36 each have a receiving element 78, 80 with an at least substantially J-shaped cross-sectional shape in a plane II perpendicular to the segmented main extension direction 52 of the connecting element 12. The receiving elements 78, 80, which are J-shaped in cross section, are designed for partial coupling with the scraping liquid channel 20. In the assembled state, the receiving elements 78, 80 rest laterally on the scraping liquid channel 20 in the scraping direction.

[0042] The fixing lugs 34, 36 are arranged in a mirror image to each other. The inner curvatures of the C-shaped receiving elements 74, 76 of the fixing lugs 34, 36 in the cross section II are arranged facing each other. The suspended ends of the J-shaped receiving elements 78, 80 of the fixing lugs 34, 36 in the cross section II face each other. Each of the two mirror image fixing lugs 34, 34', 36, 36' forms the first and second coupling units 14, 22. The two C-shaped receiving elements 74, 76 of the fixing lugs 34, 36 in the cross section II are directly adjacent to the connecting element 12. The two C-shaped receiving elements 74, 76 of the fixing lugs 34, 36 in the cross section are connected to the connecting element 12. The fixing lugs 34, 34', 36, 36' of the first and second coupling units 14, 22 are connected to each other through the connecting element 12.

[0043] The two receiving elements 74, 76 of the fixing lugs 34, 36, which are C-shaped in cross section, directly adjoin the two receiving elements 74, 76 of the fixing lugs 34, 36, which are J-shaped in cross section, on the side facing away from the connecting element 12. The two receiving elements 74, 76 of the fixing lugs 34, 36, which are C-shaped in cross section, are connected to the two receiving elements 78, 80 of the fixing lugs 34, 36, which are J-shaped in cross section, on the side facing away from the connecting element 12.

[0044] The receiving elements 74, 76, which are C-shaped in cross section II, form a receiving space 82 for laterally positively receiving the scraper rod 16. The receiving elements 78, 80, which are J-shaped in cross section II, form a receiving space 84 for laterally positively receiving the scraper liquid channel 20. The receiving spaces 82, 84 extend over the entire segmented main extension range in the main extension direction 52 of the connecting element 12. The receiving spaces 82, 84 of the first coupling unit 14 are connected to each other.

[0045] Viewed in a plane perpendicular to the main extension direction 52 of the coupling device 10, the receiving space 82, 84 is at least 50% defined by the fixing webs 34, 36 and / or the connecting element 12. On the side opposite the connecting element 12 in the assembled state, the receiving space 84 is defined by the two fixing webs 34, 36, wherein a gap 86 is arranged between the ends of the two fixing webs 34, 36 that are suspended from the receiving elements 78, 80, which are J-shaped in cross section II. The scraper rod 16 of the scraper arm 18 is introduced into the receiving space 82 through the gap 86. In this case, the two fixing webs 34, 36 are elastically deflected outwards by pressure, thereby increasing the gap 86 and allowing the scraper rod 16 to be moved through the gap 86. In addition, the scraper liquid channel 20 is introduced into the receiving space 84 through the gap 86. In this case, the two fixing webs 34 , 36 are elastically deflected outwards by the pressure, so that the recess 86 is enlarged and the scraping fluid channel 20 can be moved through the recess 86 .

[0046] Figure 3 The second coupling unit 22 of the coupling device 10 with the connecting element 12 is shown in cross section III in the assembled state. The second coupling unit 22 has a main extension direction 64, which in the assembled state is different from the main extension direction 66 of the wiper arm 18. The second coupling unit 22 is designed similarly to the first coupling unit 14. The fixing tabs 34', 36' have receiving elements 74', 76', 78', 80', which are designed similarly to the receiving elements 74, 76, 78, 80.

[0047] Figure 4 A coupling device 10 is shown with three regions 24, 26, 32 of a connecting element 12. In the first region 24, the first coupling unit 14 is connected to the connecting element 12. In the second region 32, the second coupling unit 22 is connected to the connecting element 12. Another region 26 located in the middle is configured without coupling units 14, 22 and is located between the first and second regions 24, 32. Due to the region 26 without coupling units 14, 22 made of hard material, the elastic connecting element 12 can bend and follow the curved scraper arm. Depending on the shape of the curved portion of the scraper arm 18, the free region 26 can be configured with different lengths in order to ensure a corresponding curved portion of the coupling device 10.

[0048] Figure 5The first coupling unit 14 is shown in a state in which it is partially mounted on the scraper rod 16. For mounting, the scraper rod 16 is introduced into the receiving space 82 through the recess 86 and through the receiving space 84 by a rotation-pivoting movement. By rotating the coupling unit 14 and / or the connecting element 12 when the fixing tabs 34, 36 are pivoted, the scraper rod 16 is laterally received in the receiving space 82 in a form-fitting manner. After the coupling device has been mounted on the scraper rod 16 of the scraper arm 18, a hose can be introduced into the receiving space 84 in a similar manner as a scraper liquid channel 20, for example.

[0049] In the method for producing the coupling device 10, in at least one method step, in particular in an extrusion step 88, the connecting element 12 is produced from different materials than the at least one first coupling unit 14 in a coextrusion process. In at least one method step, in particular in an extrusion step 88, the connecting element 12 is extruded from a different, in particular softer, material than the at least one first coupling unit 14 and the at least one second coupling unit 22. In at least one method step, in particular in an extrusion step 88, the connecting element 12 is produced with the same main extension direction as the at least one first coupling unit.

[0050] In at least one method step, in particular in the partial extrusion step 90, the connecting element 12 is produced further apart from the at least one first coupling unit 14 by stopping the material supply for the at least one first coupling unit 14. In at least one method step, in particular in the partial extrusion step 90, the connecting element 12 is produced further beyond the main extension of the at least one first coupling unit 14 along the main extension direction of the first coupling unit 14 and the previously produced part of the connecting element 12 by stopping the material supply for the at least one first coupling unit 14.

[0051] In at least one method step, in particular in a further extrusion step 92, by ending the material supply stop, at least one second coupling unit 22 is produced together with the connecting element 12 separately from the at least one first coupling unit 14. In at least one method step, in particular in a further extrusion step 92, the at least one second coupling unit 22 is extruded from the same material as the at least one first coupling unit 14. In at least one method step, in particular in a further extrusion step 92, the connecting element 12 is produced with the at least one second coupling unit 22 further beyond the main extension of the previously produced part of the connecting element 12 in the main extension direction of the previously produced part of the connecting element 12.

Claims

1. A coupling device, comprising at least one connecting element (12) and at least one first coupling unit (14), wherein the first coupling unit is arranged in an assembled state to be connected to a scraper rod (16) of a scraper arm (18) and to at least partially accommodate a scraper liquid channel (20), and wherein the first coupling unit is connected to the at least one connecting element (12) in a first region (24) of the at least one connecting element (12), characterized in that At least one second coupling unit (22), which is configured in an assembled state to be connected to a scraper rod (16) of the scraper arm (18) and to at least partially accommodate the scraper liquid channel (20), and the second coupling unit is connected to the at least one connecting element (12) in a second area (32) of the at least one connecting element (12) which is arranged differently from the first area (24) along the main extension direction (66), wherein the connecting element (12) is composed of a material different from that of the first coupling unit (14) and the second coupling unit (22).

2. The coupling device according to claim 1, characterized in that: The at least one connecting element (12) has, along its main extension, at least one further region (26), which is designed without the first coupling unit (14) and without the second coupling unit (22).

3. The coupling device according to claim 1 or 2, characterized in that: The coupling device is a scraper arm coupling device.

4. The coupling device according to claim 1 or 2, characterized in that: The at least one first coupling unit (14) and the at least one second coupling unit (22) are manufactured with the connecting element (12) by a co-extrusion process.

5. The coupling device according to claim 1 or 2, characterized in that: The at least one first coupling unit (14) and the at least one second coupling unit (22) each extend over a substantial part of a main extension of the connecting element (12).

6. The coupling device according to claim 1 or 2, characterized in that: The connecting element (12) bears against the scraper rod (16) in the assembled state and delimits at least one cavity (28) with the scraper rod (16) in the circumferential direction.

7. The coupling device according to claim 1 or 2, characterized in that: The at least one first coupling unit (14) and the at least one second coupling unit (22) each have two fixing webs (34, 34', 36, 36') which are spaced apart from one another and connected to one another via the at least one connecting element (12).

8. A scraper arm arrangement having a coupling device (10) according to any one of claims 1 to 7.

9. The scraper arm device according to claim 8, characterized in that At least one scraper rod (16), the scraper rod having at least one first rod area (38) with a first main extension direction (52) and / or a main extension plane and at least one adjacent second rod area (38') with a second main extension direction (64) and / or a main extension plane, wherein the main extension directions (52, 64) and / or the main extension planes of at least two rod areas (38, 38') form an angle (30) different from 180° with respect to each other, and in the assembled state, the at least one first coupling unit (14) is arranged in the at least one first rod area (38) and the at least one second coupling unit (22) is arranged in the at least one second rod area (38').

10. A method for producing a coupling device (10) according to any one of claims 1 to 7.

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