WINDSCREEN WIPER

Description

State of the art

[0001] A windshield wiper with at least one wiper arm, with at least one fluid channel arranged on the wiper arm, and with at least one connecting unit has already been proposed, wherein the connecting unit has at least one connecting element for fluidically connecting the fluid channel to a wiper blade. DE-A-102010025688 discloses a generic windshield wiper. Disclosure of the invention

[0002] The invention is based on a windscreen wiper with at least one wiper arm, which has at least one fluid connection unit, with a wiper blade, which has at least one wiper blade adapter for coupling to the wiper arm and which is designed to be removable, and with at least one connection unit, which has at least one fluid channel for a fluid flow.

[0003] It is proposed that the connecting unit has at least one connecting block which is provided for a fluidic connection of the fluid connection unit and the wiper blade adapter.

[0004] The windscreen wiper is preferably designed for use on a vehicle,

[0005] in particular a motor vehicle. The windscreen wiper is provided in particular for cleaning a window, in particular a front and / or rear window, of a vehicle. Preferably, the windscreen wiper has at least one fluid system, in particular for cleaning the window. In particular, the fluid system has at least one fluid unit,

[0006] which is preferably provided for fluid transport. Preferably, the fluid system has at least one fluid receptacle which is provided for fluid provision. In particular, the fluid system is provided to transport a fluid from the fluid receptacle via the fluid unit to a front and / or rear window of the vehicle. In particular, the wiper blade has at least one fluid dispensing unit which is preferably provided to dispense, in particular to spray, a fluid onto the window for cleaning the window. Preferably, a fluid is designed as wiping water. The wiper blade, in particular a wiper lip of the wiper blade, is preferably provided to wipe across the window for cleaning the window. In particular, the wiper blade is provided to wipe away dirt on the window and / or a fluid dispensed onto the window by the fluid dispensing unit.Preferably, the wiper arm is provided to move the wiper blade, which is attached to the wiper arm in particular by the wiper blade adapter, across the windscreen in order to clean the windscreen.

[0007] Preferably, the fluid connection unit and / or the fluid dispensing unit at least partially form the fluid unit. In particular, the fluid dispensing unit and / or the fluid connection unit is a channel-like recess in the wiper arm and / or wiper blade. Alternatively, the fluid dispensing unit and / or the fluid connection unit is / are at least partially designed as a tube and / or hose, particularly preferably as an elastic hose. It is conceivable that the fluid dispensing unit and / or the fluid connection unit is / are held by a bracket on the wiper arm and / or wiper blade. Preferably, the wiper arm is arranged on at least one drive shaft of a wiper drive of the windshield wiper of the vehicle. In particular, the wiper arm can be driven by the wiper drive to move relative to the windshield. Preferably, the wiper arm is at least partially made of metal.Alternatively or additionally, it is conceivable that the wiper arm is at least partially made of a plastic, a composite material, or another material deemed appropriate by a person skilled in the art. "Intended" is understood to mean, in particular, specially configured, specially designed, and / or specially equipped. The fact that an object is intended for a specific function is understood to mean, in particular, that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0008] A "fluid channel" is preferably understood to mean a channel-like element and / or recess for guiding a fluid. The fluid channel preferably has an at least substantially circular cross-section. Alternatively, it is conceivable for the fluid channel to have a polygonal, in particular at least substantially square, cross-section, an elliptical cross-section, or another cross-section deemed appropriate by a person skilled in the art. In particular, the fluid channel forms only one flow line, at least within the connecting unit, with the connecting unit preferably having only two channel openings. In particular, the fluid channel is unbranched, at least within the connecting unit.

[0009] In this context, a "wiper blade adapter" is understood to mean, in particular, an adapter that has a contact area with a wiper blade element of the wiper blade and is, in particular, permanently connected to the wiper blade element and, in particular, has at least one coupling element intended to provide a coupling and / or contact with the wiper arm, in particular a corresponding coupling element of the wiper arm. In particular, the coupling between the wiper blade adapter and the wiper arm, in particular between the coupling element of the wiper blade adapter and the corresponding coupling element of the wiper arm, is detachable.

[0010] The connecting unit is preferably provided for connecting the fluid connection unit to the fluid output unit, in particular fluidically. Preferably, in at least one assembled state, the connecting unit is non-positively and / or positively connected to the wiper blade adapter and / or the wiper arm, in particular to the fluid connection unit of the wiper blade adapter. In particular, the connecting unit is designed differently from the coupling element of the wiper blade adapter. Preferably, only the connecting unit is provided for fluidically connecting the wiper arm to the wiper blade.

[0011] A "connecting block" is understood, in particular, to be an element of the connecting unit whose cross-section perpendicular to a main extension direction of the connecting block is significantly larger than a cross-section of the fluid channel, in particular in the connecting block, perpendicular to a main extension direction of the fluid channel, wherein the surface area of ​​the cross-section of the connecting block is preferably at least 1.5 times, advantageously at least 2 times, preferably at least 3 times, and particularly advantageously at least 4 times larger than the surface area of ​​the cross-section of the fluid channel. A "main extension direction" of an object is understood, in particular, to be a direction that runs parallel to a longest edge of a smallest geometric cuboid that just completely encloses the object.

[0012] The inventive design of the wiper arm device advantageously allows a simple connection to be established between the fluid connection unit and the wiper blade, in particular the wiper blade adapter. Furthermore, a connection unit can advantageously be provided which can be easily removed when the wiper arm is changed and connected to the new wiper arm. In addition, a connection unit can advantageously be provided which is designed to be detachable and / or connectable by hand. Furthermore, a connection area, in particular between the fluid connection unit and the connection unit and / or between the connection unit and the wiper blade adapter, can advantageously be protected from external influences. The risk of injury to an operator when connecting and / or disconnecting the connection unit can advantageously be reduced.Furthermore, errors in connecting the connecting unit and / or the fluid channel of the connecting unit to the fluid connection unit and / or the wiper arm can be advantageously avoided, thereby preventing, in particular, fluid leakage and resulting damage. Furthermore, the aesthetics of the windshield wiper can be advantageously improved, since the wiper blade adapter is provided for both a mechanical coupling and a fluidic coupling to the wiper arm.

[0013] According to the invention, it is proposed that the fluid channel within the connecting block exhibit a directional deviation. A "directional deviation" is to be understood, in particular, as a flow direction in the connecting element changing along the directional deviation, in particular with respect to a main extension plane of the connecting element. A "main extension plane" of an object is to be understood, in particular, as a plane that is parallel to a largest side surface of a smallest imaginary cuboid that just completely encloses the object, and in particular, runs through the center of the cuboid.In particular, the directional deviation comprises at least one angular change, preferably relative to the main extension plane of the connecting block, in particular between 10° and 170°, advantageously between 30° and 150°, preferably between 50° and 130°, particularly advantageously between 70° and 110°, and particularly preferably between 80° and 100°. Particularly preferably, the directional deviation comprises at least one angular change of at least substantially 90°. Preferably, the fluid channel, particularly along the directional deviation, has a curvature and / or corner within the connecting block. A "corner" is to be understood in particular as a curvature with a radius of at least approximately 0 mm. This advantageously provides a simple change of direction within the connecting unit.Furthermore, operating comfort can advantageously be increased, in particular when changing the wiper blade, since bending of the connecting block is advantageously at least substantially eliminated when connecting the connecting block to the wiper blade adapter and / or the fluid dispensing unit.

[0014] According to the invention, it is proposed that the connecting block be provided for a fixed and / or fluid-tight plug-in connection with a plug-in valve of the wiper blade adapter. The connecting block preferably has at least one recess provided for the plug-in connection with the plug-in valve of the wiper blade adapter. Preferably, a straight line of extension of the recess of the connecting block is at least substantially parallel, in particular congruent, to a flow direction within the plug-in valve. "Substantially parallel" is to be understood in particular as an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation from the reference direction of in particular less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. In particular, the plug-in valve of the wiper blade adapter at least partially forms the fluid dispensing unit.A "line of extension" of an object is understood to mean, in particular, a straight line that runs parallel to the longest edge of a smallest geometric cuboid that just completely encloses the object. In particular, the recess is integrally connected to the fluid channel of the connecting unit. Preferably, the plug-in valve of the wiper blade adapter is at least substantially cylindrical. However, alternative valves are also conceivable, which in particular provide a screw connection, a snap-in connection, a magnetic connection, and / or the like. This can advantageously increase flexibility, since the plug-in valve provides a quick and easy connection when changing the wiper blade.Furthermore, operating convenience can be advantageously increased, particularly when changing the wiper blade, especially since the often inaccessible connecting unit can be easily removed and reconnected. Furthermore, a design that is as simple as possible for a fluid-tight connection between the connecting unit and the wiper blade adapter can be advantageously provided.

[0015] Furthermore, it is proposed that the connecting block be at least substantially polyhedral in shape. A "polyhedral" object is understood, in particular, to be an object that is bounded at least substantially exclusively by straight surfaces, wherein the object has at least a number of surfaces of, in particular, between 12 and 4, advantageously between 5 and 10, and particularly advantageously between 6 and 8. Preferably, the connecting block is at least substantially cuboid-shaped. This can advantageously increase ease of use, since the grip of the connecting block is optimized. Furthermore, a polyhedral connecting block can advantageously reduce manufacturing costs and effort.

[0016] It is further proposed that an angle between the main extension line of the connecting block and a main extension plane of the wiper blade adapter remains at least substantially constant, at least during a movement of the wiper blade. Preferably, the angle between the main extension plane of the connecting block and the main extension plane of the wiper arm is at least substantially parallel. In particular, the connecting block moves at least substantially synchronously with a movement of the wiper arm, in particular of the wiper blade adapter. Preferably, at least one surface of the connecting block is at least substantially completely in contact with a surface of the wiper blade adapter. This advantageously ensures a fluid-tight connection between the connecting unit, in particular the connecting block, and the wiper blade adapter. Furthermore, a constant fluid flow can advantageously be provided.

[0017] Furthermore, it is proposed that the connecting block be formed at least substantially in one piece. "One-piece" is understood to mean, in particular, molded in one piece. This one piece is preferably produced from a single blank, a mass, and / or a cast, particularly preferably using an injection molding process, in particular a single- and / or multi-component injection molding process. This advantageously increases the dimensional stability of the connecting block. Furthermore, production of the connecting unit, in particular of the connecting block, can advantageously be further simplified.

[0018] It is further proposed that the connecting unit be at least partially rotationally limp and / or flexurally limp. Preferably, the connecting unit is provided solely for a fluidic connection between the fluid connection unit and the wiper blade adapter. According to the invention, the connecting unit is at least partially, preferably entirely, made of an elastic material. Preferably, a force-based coupling, in particular between the coupling element of the wiper blade adapter and the coupling element of the wiper arm, is formed at least substantially separately from the fluidic connection. This advantageously increases the flexibility of the connecting unit, since it is independent of a mechanical coupling. Furthermore, a fluid-tight connection can advantageously be further improved.

[0019] According to the invention, it is proposed that the connecting unit comprise at least one tubular conduit element, which at least partially comprises the fluid channel and which is provided for a fluidic connection to the fluid connection unit. "Tubular" is to be understood in particular as meaning that an element has a main extension that is substantially greater, in particular at least twice, advantageously at least three times, preferably at least four times, and particularly advantageously at least five times, than an extension perpendicular to the main extension. A "main extension" is to be understood in particular as an extension along the main extension direction, which is delimited by the outer edges of the object. In particular, the shape of the conduit element corresponds at least substantially to the shape of the fluid channel. In particular, the conduit element is at least substantially cylindrical.Preferably, the conduit element merely forms a wall for the fluid channel. In particular, the fluid connection unit has at least one plug-in valve for a plug-in connection with the conduit element. This advantageously ensures a fluid-tight connection during movement of the wiper arm and / or wiper blade.

[0020] It is also proposed that the connecting unit have at least one further fluid channel for a fluid flow. The fluid guide in the further fluid channel is at least substantially in line with a fluid guide in the fluid channel. This advantageously allows for further optimization of fluid supply during a wiping operation of the windshield wiper. Furthermore, fluid supply during a back-and-forth movement can advantageously be ensured.

[0021] It is further proposed that the connecting unit comprise at least one further conduit element, which at least partially comprises the further fluid channel and which is provided for a fluid connection to the fluid connection unit. In particular, the conduit element is at least substantially identical in construction to the further conduit element. Preferably, the further conduit element is integrally connected to the connecting block. This advantageously further simplifies fluid supply. Furthermore, fluid supply during a back-and-forth movement can advantageously be further optimized.

[0022] It is further proposed that the connecting block at least partially comprise the further fluid channel. Preferably, the connecting block comprises at least the fluid channel and the further fluid channel. In particular, the connecting block comprises at least one further recess, which is provided for a plug-in connection with a further plug-in valve of the fluid connection unit. This advantageously allows manufacturing costs to be further reduced. Furthermore, operator comfort can be further increased, since only one connecting block is provided for two plug-in connections with the wiper blade adapter.

[0023] Furthermore, a connecting unit for a windshield wiper is proposed. The connecting unit has, preferably for fluid transport, at least one connecting block and / or one line element, wherein the connecting block and / or the line element preferably has at least one interface for coupling to a wiper arm and / or a wiper blade, in particular a wiper blade adapter of a wiper blade. In particular, the connecting unit is designed as a single piece. This advantageously makes it possible to provide a connecting unit for fluid transport that is designed and / or usable at least substantially independently of a wiper arm and / or wiper blade. Advantageously, a connecting unit can be provided that can be reused when the wiper blade or a windshield wiper is changed.

[0024] Furthermore, a wiper blade for a windshield wiper is proposed. Preferably, the wiper blade, in particular a wiper blade adapter of the wiper blade, has at least one interface for coupling to a connecting block, preferably to a fluid connection. The interface is provided to provide a fluid connection for a fluid dispensing unit of the wiper blade. In particular, the interface for coupling to the connecting block is designed as a plug-in valve. This advantageously makes it possible to provide a wiper blade, in particular with a fluid dispensing unit, which can be quickly and easily connected to a wiper arm and / or a fluid connection unit.

[0025] In addition, a method for assembling at least one windshield wiper is proposed. Preferably, the method is provided for replacing the wiper blade of the windshield wiper. In particular, a fluid connection is released in at least one first method step. Preferably, in the first method step, at least one plug-in connection between the plug-in valve of the wiper blade adapter and the recess in the connecting block is released. Preferably, in the first method step, at least one plug-in connection between the line element and the plug-in valve of the fluid connection unit is released. Preferably, in at least one second method step, at least one force-related connection between the wiper blade adapter and the wiper arm is released. This advantageously provides a method which enables simple and rapid assembly and / or disassembly of the wiper blade.Furthermore, a high level of operating comfort can be advantageously enabled when assembling and / or disassembling the wiper blade.

[0026] The windshield wiper according to the invention and / or the method according to the invention should not be limited to the application and embodiment described above. In particular, the windshield wiper according to the invention and / or the method according to the invention can have a number of individual elements, components, units, and method steps that differs from the number stated herein to fulfill a function described herein. Furthermore, in the value ranges specified in this disclosure, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily. drawing

[0027] Further advantages will become apparent from the following description of the drawings. The drawing illustrates an exemplary embodiment of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

[0028] They show: Fig. 1A part of a windscreen wiper according to the invention, with a wiper blade and with a connecting unit which fluidically connects at least the wiper arm to the wiper blade, Fig. 2A part of the windscreen wiper in a plan view, Fig. 3A wiper blade adapter of the wiper blade and the connecting unit which is connected to the wiper blade adapter, Fig. 4The wiper blade adapter and at least partially the connecting unit, wherein the connecting unit is shown in a sectional view, Fig. 5The connecting unit with a connecting block and with a line element, Fig. 6The connecting unit with the connecting block and the line element in a plan view, Fig. 7A part of the windscreen wiper with the wiper arm and the wiper blade in a disassembled state. Description of the embodiment

[0029] The Figure 1 shows a part of a windscreen wiper 10 in an assembled state. The Figure 2shows part of the windshield wiper 10 in a plan view. The windshield wiper 10 is intended for use on a motor vehicle. The windshield wiper 10 is intended for cleaning a front and / or rear window of the vehicle. The windshield wiper 10 has at least one fluid system 12. The fluid system 12 is intended for fluid transport. The fluid system 12 has at least one fluid unit 14. The fluid system 12 has at least one fluid receptacle. The fluid system 12 is intended to transport a fluid from the fluid receptacle via the fluid unit 14 to a front and / or rear window of the vehicle. The fluid is designed as washer fluid.

[0030] The windshield wiper 10 has at least one wiper arm 20. The wiper arm 20 is arranged on at least one drive shaft of a wiper drive of the windshield wiper 10 of the vehicle. The wiper arm 20 can be driven by the wiper drive to move relative to the windshield. The wiper arm 20 is formed at least partially from a metal. Alternatively or additionally, the wiper arm 20 is formed at least partially from a plastic, a composite material, or the like. The wiper arm 20 has at least one fluid connection unit 22. The fluid connection unit 22 at least partially forms the fluid unit 14 for transporting the fluid. The fluid connection unit 22 has at least one channel-like recess 74 for a fluid flow. The fluid connection unit 22 is attached to the wiper arm 20 by a holder.

[0031] The windshield wiper 10 has at least one wiper blade 40. The fluid connection unit 22 is provided for connecting the vehicle's fluid receptacle to the wiper blade 40. The wiper blade 40 has at least one fluid dispensing unit 46. The fluid dispensing unit 46 at least partially forms the fluid unit 14 for transporting the fluid. The fluid dispensing unit 46 is provided for dispensing and / or spraying the fluid onto the windshield for cleaning the windshield. The fluid dispensing unit 46 has at least one channel-like recess 74 for a fluid flow. The wiper blade 40 is provided for wiping across the windshield for cleaning the windshield. The wiper blade 40 is provided for wiping away the fluid dispensed onto the windshield by the fluid dispensing unit 46 from the windshield. The wiper blade 40 has at least one wiper blade adapter 42. The wiper blade adapter 42 is intended to be coupled to the wiper arm 20.The wiper blade adapter 42 has at least one contact area with a wiper blade element of the wiper blade 40. The wiper blade adapter 42 is permanently connected to the wiper blade element. The wiper blade adapter 42 has at least one coupling element 48, which is provided for coupling and / or contacting the wiper blade 40 with the wiper arm 20. The wiper arm 20 has at least one corresponding coupling element 26, which is provided for coupling with the coupling element 48 of the wiper blade adapter 42. The coupling element 48 of the wiper blade adapter 42 and the coupling element 26 of the wiper arm 20 are provided for transmitting force between the wiper arm 20 and the wiper blade 40. The coupling element 48 of the wiper blade adapter 42 and the corresponding coupling element 26 of the wiper arm 20 are arranged to be at least partially pivotable relative to one another.The coupling element 48 of the wiper blade adapter 42 and the corresponding coupling element 26 of the wiper arm 20 are provided for transmitting force between the wiper arm 20 and the wiper blade 40. The wiper arm 20 is provided for moving the wiper blade 40, which is attached to the wiper arm 20 by the wiper blade adapter 42, across the windshield to clean the windshield. The wiper blade 40 is designed to be removable. The coupling between the coupling element 48 of the wiper blade adapter 42 and the corresponding coupling element 26 of the wiper arm 20 is detachable.

[0032] The windshield wiper 10 has at least one connecting unit 60. The connecting unit 60 is provided for fluidically connecting the wiper arm 20 to the wiper blade adapter 42. The connecting unit 60 connects at least the fluid connection unit 22 to the fluid output unit 46. The connecting unit 60 is connected to the wiper blade adapter 42 to allow fluid flow. The connecting unit 60 is provided solely for a fluidic connection between the fluid connection unit 22 and the wiper blade adapter 42. The connecting unit 60 is at least partially rotationally limp and / or flexurally limp. The connecting unit 60 is at least partially made of an elastic material. The connecting unit 60 is formed at least substantially separately from the coupling element 48 of the wiper blade adapter 42 and the corresponding coupling element 26 of the wiper arm 20.

[0033] The Figure 3shows the wiper blade adapter 42 and at least partially the connecting unit 60. The Figure 4 shows the wiper blade adapter 42 and at least partially the connecting unit 60, wherein the connecting unit 60 is shown in a sectional view.

[0034] The connecting unit 60 has at least one fluid channel 68 for a fluid flow. The fluid channel 68 at least partially forms the fluid unit 14 for transporting the fluid. The fluid channel 68 has an at least substantially circular cross-section. The fluid channel 68 forms only one flow line, at least within the connecting unit 60. The connecting unit 60 has only two channel openings. The fluid channel 68 is unbranched, at least within the connecting unit 60. The fluid channel 68 is provided to conduct the fluid from the fluid connection unit 22 to the fluid output unit 46. The connecting unit 60 has at least one further fluid channel 70 for a fluid flow. The fluid guidance in the further fluid channel 70 is at least substantially in accordance with a fluid guidance in the fluid channel 68.

[0035] The connecting unit 60 has at least one connecting block 62. The connecting block 62 is provided for a fluidic connection of the fluid connection unit 22 and the wiper blade adapter 42. The connecting block 62 at least partially has the fluid channel 68. The connecting block 62 at least partially has the further fluid channel 70. The connecting block 62 is at least substantially formed in one piece. The connecting block 62 is at least substantially polyhedral. A body of the connecting block 62 is essentially delimited only by surfaces. The connecting block 62 is at least substantially cuboidal. An angle between the main extension line of the connecting block 62 and a main extension plane of the wiper blade adapter 42 remains at least substantially constant, at least during a movement of the wiper blade 40.The angle between the main extension plane of the connecting block 62 and the main extension plane of the wiper arm 20 is at least substantially parallel during a movement of the wiper blade 40. The connecting block 62 moves at least substantially synchronously with a movement of the wiper arm 20. At least one surface of the connecting block 62 is at least substantially completely in contact with a surface of the wiper blade adapter 42 during a movement of the wiper blade 40.

[0036] The connecting block 62 is provided for a fixed plug-in connection with a plug-in valve 44 of the wiper blade adapter 42. The connecting block 62 is provided for a fluid-tight plug-in connection with the plug-in valve 44 of the wiper blade adapter 42. The connecting block 62 has at least one recess 74. The recess 74 is provided for the plug-in connection with the plug-in valve 44 of the wiper blade adapter 42. A straight line of extension of the recess 74 of the connecting block 62 is at least substantially parallel to a flow direction within the plug-in valve 44. The plug-in valve 44 of the wiper blade adapter 42 at least partially forms the fluid dispensing unit 46. The recess 74 is integrally connected to the fluid channel 68 of the connecting unit 60. The recess 74 forms a cross-sectional widening of the fluid channel 68. The plug-in valve 44 of the wiper blade adapter 42 is at least substantially cylindrical.The recess 74 is at least substantially cylindrical. In a plug-in connection, the recess 74 fluid-tightly encloses the plug-in valve 44 of the wiper blade adapter 42. The connecting block 62 has at least one further recess 74, which is provided for a plug-in connection with a further plug-in valve 44 of the wiper blade adapter 42. The further recess 74 is integrally connected to the further fluid channel 70 of the connecting unit 60. The further recess 74 forms a cross-sectional widening of the further fluid channel 70.

[0037] The connecting unit 60 has at least one tubular line element 64. The line element 64 at least partially has the fluid channel 68. The line element 64 is provided for a fluidic connection to the fluid connection unit 22. The shape of the line element 64 corresponds at least substantially to the shape of the fluid channel 68. The line element 64 is at least substantially cylindrical. The line element 64 merely forms a wall for the fluid channel 68. The fluid connection unit 22 has at least one plug-in valve 24 for a plug-in connection with the line element 64. The plug-in valve 24 of the fluid connection unit 22 has at least one barb for a secure and fluid-tight plug-in connection. The line element 64 is at least partially rotationally limp and / or flexurally limp. The line element 64 and the connection block 62 are connected to one another in one piece.The line element 64 and the connecting block 62 consist at least substantially of one part. The connecting unit 60 has at least one further line element 66. The line element 64 is at least substantially identical in construction to the further line element 66. The further line element 66 at least partially has the further fluid channel 70. The further line element 66 is provided for a fluidic connection to the fluid connection unit 22. The further line element 66 is connected in one piece to the connecting block 62. The fluid connection unit 22 has at least one further plug-in valve 24 for a plug-in connection with the further line element 66.

[0038] The Figure 5 and the Figure 6show the connecting unit 60 with the connecting block 62 and with the line element 64 and the further line element 66. The line element 64 and the further line element 66 are connected to the connecting block 62 at the same surface. A connecting line, which is formed at least by the center points of a connecting surface between the connecting block 62 with the line element 64 and the further line element 66, is at least substantially parallel to the main extension plane of the connecting block 62.

[0039] The recess 74 and the further recess 74 are arranged offset within the connecting block 62. The connecting block 62 has at least one connection surface 76, which has at least the connection surface of the connecting block 62 with the line element 64. The recess 74 and the further recess 74 are arranged offset relative to the connection surface 76 of the connecting block 62. A flow length of the fluid channel 68 is different from a flow length of the further fluid channel 70. A connecting line, which is formed by the center points of the recess 74, is arranged obliquely to a main extension line of the connecting block 62. The recess 74 has a different distance from the connection surface 76 of the connecting block 62 within the connecting block 62. The fluid channel 68 and the further fluid channel 70 are at least substantially parallel.The conduit element 64 and the further conduit element 66 are at least substantially parallel. The fluid channel 68 is inclined relative to the connecting surface 76 of the connecting block 62. The conduit element 64 is inclined relative to a connecting surface 76 of the connecting block 62. An angle between the conduit element 64 and the connecting surface 76 is at least between 10° and 45°. An angle between the fluid channel 68 and the connecting surface 76 is at least between 10° and 45°.

[0040] The connecting unit 60 has at least one directional deviation 72. The directional deviation 72 deflects the fluid. The fluid channel 68 has the directional deviation 72. The fluid channel 68 has the directional deviation 72 within the connecting block 62. The directional deviation 72 has at least one angular change relative to the main extension plane of the connecting block 62. The directional deviation has at least one angular change of at least substantially 90°. The fluid channel 68 is formed as a corner along the directional deviation 72 within the connecting block 62. Alternatively, the directional deviation 72 is formed as a bend within the connecting block 62. The fluid channel 68 has at least two flow lines, which are formed at least substantially by the center points of the fluid channel 68. The flow lines of the fluid channel 68 intersect at the directional deviation 72 in the connecting block 62.The flow lines of the fluid channel 68 are at least substantially perpendicular to one another. The fluid channel 68 is at least substantially L-shaped in the connecting unit 60. The further fluid channel 68 has a further directional deviation 72 at least substantially in accordance with the directional deviation 72 of the fluid channel 68.

[0041] The Figure 7shows a part of the windshield wiper 10 with the wiper arm 20 and the wiper blade 40 in a disassembled state. A method is proposed for disassembling and / or assembling the windshield wiper 10. In particular, a method for changing the wiper blade 40 is proposed. In at least a first method step, a fluid connection is released. In the first method step, at least one plug-in connection between the plug-in valve 44 of the wiper blade adapter 42 and the recess 74 of the connecting block 62 is released. The plug-in connection between the plug-in valve 44 of the wiper blade adapter 42 and the recess 74 of the connecting block 62 is released by hand. In the first method step, at least one plug-in connection between the line element 64 and the plug-in valve 24 of the fluid connection unit 22 is released.In the first method step, at least one plug-in connection between the further line element 66 and the further plug-in valve 24 of the fluid connection unit 22 is released. In the first method step, the connecting unit 60 is removed. In the first method step, a fluid connection between the wiper arm 20 and the wiper blade 40 is interrupted. In at least a second method step, at least the force-mechanical connection between the wiper blade adapter 42 and the wiper arm 20 is released. In the second method step, at least the coupling element 48 of the wiper blade adapter 42 is removed from the corresponding coupling element 26 of the wiper arm 20. In a third method step, a further wiper blade is force-mechanically connected to the wiper arm 20. In a fourth method step, the connecting unit 60 is connected to the wiper arm 20 and to a further wiper blade adapter of the further wiper blade.

Claims

1. Windscreen wiper (10) having at least one wiper arm (20), which has at least one fluid connection unit (22), and having a wiper blade (40), which has at least one wiper blade adapter (42) for coupling to the wiper arm (20) and which is designed to be removable, and having at least one connecting unit (60), which has at least one fluid channel (68) for passage of a fluid, wherein the connecting unit (60) has at least one connecting block (62), which is provided for a fluidic connection of the fluid connection unit (22) and the wiper blade adapter (42), and at least one tubular conduit element (64), which at least partially has the fluid channel (68) and which is provided for a fluidic connection to the fluid connection unit (22), wherein the fluid channel has a direction deviation (72) within the connecting block (62), and wherein the connecting block (62) and the tubular conduit element are formed from an elastic material, wherein the connecting block (62) is provided for a fixed and / or fluid-tight plug-in connection to a plug-in valve (44) of the wiper blade adapter (42), characterized in that the connecting block (62) has at least one recess (74), which is provided for the plug-in connection to the plug-in valve (44) of the wiper blade adapter (42), and has a further recess (74), which is provided for a plug-in connection to a further plug-in valve (44) of the wiper blade adapter, and the recess (74) and the further recess (74) are offset within the connecting block (62).

2. Windscreen wiper (10) according to Claim 1, characterized in that the connecting block (62) is at least substantially in the shape of a polyhedron.

3. Windscreen wiper (10) according to either of the preceding claims, characterized in that an angle between the main straight line of extent of the connecting block (62) and a main plane of extent of the wiper blade adapter (42) remains at least substantially constant at least during a movement of the wiper blade (40).

4. Windscreen wiper (10) according to one of the preceding claims, characterized in that the connecting block (62) is at least substantially in one piece.

5. Windscreen wiper (10) according to any one of the preceding claims, characterized in that the connecting unit 60 (60) is at least partially rotatable and / or pliable.

6. Windscreen wiper (10) according to any one of the preceding claims, characterized in that the connecting unit (60) has at least one further fluid channel (70) for passage of a fluid.

7. Windscreen wiper (10) according to Claim 6, characterized in that the connecting unit (60) has at least one further line element (66), which at least partially has the further fluid channel (70) and which is provided for a fluidic connection to the fluid connection unit (22).

8. Windscreen wiper (10) according to Claim 7, characterized in that the connecting block (62) at least partially has the further fluid channel (70).