Abstract:
The invention is based on a wiper arm arrangement comprising at least one wiper fluid channelling unit ( 12 ) that has at least one wiper fluid duct ( 14 ) and at least one coupling unit ( 16 ) which is designed to be connected to a wiper stem ( 18 ) of a wiper arm ( 20 ). ( 14 ) chalt is proposed that the at least one wiper fluid duct ( 14 ) be made integral with the at least one coupling unit ( 16 ).

Description:
BACKGROUND OF THE INVENTION 
       [0001]    A wiper arm arrangement comprising at least one wiper fluid channeling unit that has at least one wiper fluid duct and at least one coupling unit which is designed to be connected to a wiper stem of a wiper arm has already been proposed. 
       SUMMARY OF THE INVENTION 
       [0002]    The invention is based on a wiper arm arrangement comprising at least one wiper fluid channeling unit that has at least one wiper fluid duct and at least one coupling unit which is designed to be connected to a wiper stem of a wiper arm. 
         [0003]    According to the invention, the at least one wiper fluid duct is made integral with the at least one coupling unit. The wiper fluid duct is preferably designed to channel wiper fluid at least substantially along a main extension direction of the wiper arm. A “wiper fluid channeling unit” is to be understood in this context particularly as a unit which is designed in at least one operating state to channel wiper fluid at least in a partial section of a distance, in particular, from a reservoir to a surface to be washed, such as, in particular, a window pane. A unit is thereby particularly to be understood which is designed in one operating state to channel wiper fluid for cleaning a window pane at least in a partial section of a distance, in particular, from a reservoir to the window pane to be cleaned. In addition, a “wiper fluid duct” is particularly to be understood as a duct which is designed to guide a wiper fluid particularly in at least one partial section, in particular, from a reservoir to the at least two wiper nozzle units during an operation of the wiper fluid distribution unit. A duct is thereby particularly to be understood which is designed at least in a partial section to accommodate wiper fluid to a line and/or a delivery system. In a particularly preferred manner, a duct is particularly to be understood which is designed to directly receive wiper fluid in at least one operating state. In addition, a “coupling unit” is to be understood in this context particularly as a unit which is designed to produce a connection, in particular a connection which can be released in a nondestructive manner. A unit is thereby particularly to be understood which is designed to connect at least the wiper fluid channeling unit to a wiper stem of a wiper arm in a positive locking, form-fit and/or materially bonded manner. In a particularly preferred manner, a unit is thereby to be understood which is designed to produce a connection that can be released in a nondestructive manner, wherein said connection can especially be produced without the use of tools. “Designed” is to be particularly understood in this context as being specially configured and/or equipped. By virtue of the fact that an object is designed for a certain function, it is particularly to be understood that the object fulfills or carries out this particular function in at least one state of application and/or operation. Furthermore, a “wiper stem” is particularly to be understood in this context as an elongated component of the wiper arm which extends at least substantially parallel to a main extension direction of the wiper arm. In particular, a component is preferably thereby understood which is designed to connect a drive axis of the wiper arm indirectly to a receiving region for a wiper blade in order to transmit a motion, in particular a rotational motion. In addition, “integral” is particularly to be understood in this context as being at least connected in a materially bonded manner, for example by means of a welding process, an adhesive bonding process, an injection molding process and/or by means of another process that appears to be useful to the person skilled in the art and/or to be understood as being advantageously formed in one piece, such as, for example, by a production from a cast and/or by a production in a single or multicomponent injection molding process and advantageously from a single blank. A “main extension direction” of a structural unit is particularly to be understood in this context as a direction which extends parallel to the longest lateral edge of the smallest geometric cuboid which the structural unit can just barely completely enclose. 
         [0004]    By designing the wiper arm arrangement according to the invention, a number of parts can advantageously be kept small. As a result, a wiper arm arrangement that is particularly easy to install can furthermore, in particular, be provided. In addition, an easy and quick retrofitting of a wiper arm arrangement on a wiper arm can thereby be achieved. 
         [0005]    It is furthermore proposed that the at least one coupling unit has at least one clip fastening element. A clip fastening element is particularly to be understood in this context as a fastening element that has at least one detent means. The at least one detent means can be designed to lock with the fastening element itself and/or to a component to be coupled. A “detent means” is to be particularly understood as a resilient means for producing a detent connection which is designed to be resiliently deflected during installation. In so doing, a wiper arm arrangement that is particularly easy to install can thereby be provided. In particular, an especially advantageously simple coupling can be achieved. In a preferable manner, the wiper fluid channeling unit of the wiper arm arrangement can easily be clipped by an operator onto the wiper arm. In particular, an easy and quick retrofitting of a wiper arm arrangement on a wiper arm can thereby be achieved. 
         [0006]    It is furthermore proposed that the at least one coupling unit has at least one wiper arm receiving region for receiving the wiper stem, said receiving region having at least approximately a cross-sectional shape of the wiper stem. That means particularly that the wiper arm receiving region has a cross-sectional shape which corresponds at least approximately to a cross-sectional shape of the wiper stem. A “wiper arm receiving region” is particularly to be understood in this context as a region which is provided for receiving the wiper arm. The receiving region preferably comprises a recess which has a cross-sectional shape that corresponds at least approximately to a cross-sectional shape of the wiper arm in an accommodated region. In a particularly preferred manner, the recess is surrounded by walls of the coupling unit in an angular range of at least 90°, preferably of at least 180° and in an especially preferred manner of at least 270° in an at least one plane, as viewed from a central point of the recess in the plane. By “corresponds at least approximately”, it is to be understood in this context that at least 40%, preferably at least 60% and in an especially preferred manner maximally 80% of a surface of a cross-sectional shape is congruent with respect to a surface of the at least approximately corresponding cross-sectional shape. As a result, a particularly advantageous and reliable coupling at least of the wiper fluid channeling unit of the wiper arm arrangement to the wiper arm can be achieved. In particular, an especially simple and intuitive installation can thereby be implemented. 
         [0007]    It is furthermore proposed that the at least one coupling unit has at least one blocking device which is provided to secure the wiper fluid channeling unit on the wiper stem of the wiper arm. The at least one blocking device is preferably provided to block the at least one clip fastening element, in particular, from opening. In a particularly preferable manner, the at least one blocking device is designed to block the at least one detent means of the at least one clip fastening element. A “blocking device” is to be particularly understood in this context as a device which is provided for blocking or, respectively, securing a connection. A device is particularly to be understood which is designed to prevent an undesired release of a connection, in particular a connection between the wiper fluid channeling unit and the wiper stem of the wiper arm. In a particularly preferred manner, the blocking device comprises a blocking means which is intended to be actively removed, manipulated, turned, displaced and/or activated or deactivated by other active procedures which are considered useful by the person skilled in the art in order to release the blocking device. As a result, the wiper fluid channeling unit can particularly be prevented from inadvertently releasing from the wiper stem of the wiper arm. Hence, the wiper fluid channeling unit can thereby be prevented from being pushed away from the wiper stem by an airstream and/or by a simple act of theft. 
         [0008]    It is furthermore proposed that the wiper arm arrangement comprises at least one wind deflector element. A “wind deflector element” is particularly to be understood in this context as a unit which is designed to be used to deflect an airstream acting on the wiper arm arrangement and/or to press said wiper arm arrangement against a wiper arm. In a preferable manner, the wind deflector element has at least one concave outer surface. In so doing, a particularly advantageous wiper arm arrangement can be provided. Furthermore, an inadvertent release of the wiper arm arrangement, for example by means of an airstream, can thus be prevented respectively avoided. 
         [0009]    It is furthermore proposed that the at least one wiper fluid channeling unit comprises the at least one wind deflector element. The at least one wind deflector element is preferably integrally formed with the at least one wiper fluid duct and the at least one coupling unit of the at least one wiper fluid channeling unit. As a result, an inadvertent release of the wiper fluid channeling unit of the wiper arm arrangement from the wiper stem of the wiper arm, for example by means of an airstream, can particularly be prevented respectively avoided. In addition, a number of parts can thereby be kept small. As a result, a simple installation can in turn be achieved. 
         [0010]    It is furthermore proposed that the wiper arm arrangement comprises at least one wiper nozzle unit that includes at least one wiper nozzle element for applying wiper fluid to a surface to be washed. A “wiper nozzle unit” is particularly to be understood in this context as a unit which is designed to apply fluid, in particular a wiper fluid, for cleaning a surface, in particular a window pane. The unit is preferably designed to apply the fluid via a wiper nozzle element for cleaning a window pane. A “wiper nozzle element” is to be understood in this case as an element which is designed to spray a fluid, in particular wiper fluid for cleaning a window pane, in particular a window pane of a motor vehicle, in a particular discharge direction. In this connection, the nozzle element preferably has a connecting element for connecting a wiper fluid tube and/or a wiper fluid pump, in particular of the wiper nozzle unit. As a result, a reliable distribution and/or application of wiper fluid can especially be achieved. 
         [0011]    It is furthermore proposed that the wiper arm arrangement has at least one connecting element which connects the at least one wiper nozzle unit to the at least one wiper fluid duct of the at least one wiper fluid channeling unit. A “connecting element” is particularly to be understood in this context as an element which is designed to connect the wiper nozzle unit to the wiper fluid duct. An element is preferably thereby understood which is designed to feed or lead wiper fluid from the wiper fluid duct to the wiper nozzle unit. In a particularly preferred manner, the element is at least partially formed from a duct, such as especially a tube. In so doing, a connection can advantageously be implemented between the at least one wiper nozzle unit and the at least one wiper fluid duct. As a result, a transmission of wiper fluid from the at least one wiper fluid duct to the at least one wiper nozzle unit can be implemented in a preferable manner. 
         [0012]    It is furthermore proposed that the wiper nozzle unit has at least one coupling unit, which, in an installed state, is designed to be connected to a wiper arm. In an installed state, the coupling unit is preferably designed to be connected to a wiper arm adapter of the wiper arm. A “wiper arm adapter” is particularly to be understood in this context as an adapter which has a contact area with a wiper arm component and is captively connected to the wiper arm component and which is designed to provide a coupling region of the wiper arm component for a coupling and/or contacting to a wiper blade adapter. In this case, a “wiper blade adapter” is particularly to be understood as an adapter which has a contact region with a wiper blade component and is captively connected to the wiper blade component and which is designed to provide a coupling region of the wiper blade component for a coupling and/or contacting to the wiper arm adapter. As a result, a wiper arm arrangement that is especially easy to install can particularly be provided. In particular, the wiper nozzle unit can thereby be likewise connected to the wiper arm. In a particularly preferred manner, the wiper nozzle unit can be connected to the wiper arm separately from the wiper fluid channeling unit, whereby a high degree of flexibility can be achieved. 
         [0013]    The wiper arm arrangement according to the invention is hereby not limited to the application and embodiment described above. The inventive wiper arm arrangement can particularly have a number of individual elements, components and units which deviates from the number stated here in the application in order to fulfill a functionality described herein. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]    Further advantages ensue from the following description of the drawings. An exemplary embodiment is depicted in the drawings. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently consider the features in isolation and put them together to form further useful combinations. 
           [0015]    In the drawings: 
           [0016]      FIG. 1  shows an inventive wiper arm arrangement comprising a wiper fluid channeling unit and comprising a wiper nozzle unit, a wiper arm and a partial cutout of a wiper blade in a schematic depiction; 
           [0017]      FIG. 2  shows the inventive wiper arm arrangement comprising the wiper fluid channeling unit in a schematic cross-sectional depiction along the cutting line II; and 
           [0018]      FIG. 3  shows an inventive wiper arm arrangement comprising the wiper fluid channeling unit in a further schematic cross-sectional depiction along the cutting line III. 
       
    
    
     DETAILED DESCRIPTION 
       [0019]      FIG. 1  shows a wiper arm arrangement  10  according to the invention, a wiper arm  20  and a wiper blade  40 .  FIG. 1  furthermore shows a surface  34  to be washed of a motor vehicle which is not further visible. The surface  34  to be washed is in the form of a window pane. 
         [0020]    The wiper arm  20  has a wiper stem  18 . The wiper stem  18  has two wiper arm segments  42 ,  44  and a hinge  46 . The wiper arm segments  42 ,  44  are connected by means of the hinge  46 . In addition, a spring element which is not visible is disposed in the region of the hinge  46 . The spring element which is not visible is provided to press the second wiper arm segment  44  in the direction of the surface  34  to be washed in a pressing region of said second wiper arm segment  44 . The surface  34  to be washed is formed by a window pane of a motor vehicle. The first wiper arm segment  42  is connected via a pivot pin  48  to a motor vehicle that is not further visible. The pivot pin  48  is, when viewed along a main extension direction  50  of the wiper arm  20 , connected to the wiper stem  18  at an outer end of the wiper arm  20 . Said pivot pin  48  is driven by a drive motor which is not visible in the drawing. A wiper arm adapter  52  is arranged at an end of the second wiper arm segment  44  that faces away from the hinge  44 . The wiper arm adapter  52  is formed integrally with the second wiper arm segment  44 . The wiper arm adapter  52  is provided for receiving a wiper blade adapter  54  of the wiper blade  40 . The wiper arm adapter  52  receives the wiper blade adapter  54 . 
         [0021]    The wiper blade  40  comprises the wiper blade adapter  54 . The wiper blade  40  has the wiper blade adapter  54  for coupling to the wiper arm  20 . In addition, the wiper blade  40  has a wind deflector unit  56 , two spring rails which are not visible, a wiper lip which is not visible and two end caps  58 , of which only one is visible. In an operating state, the wiper blade  40  wipes across a surface  34  to be washed. The wiper lip of the wiper blade  40 , which lip is not visible, is designed to rest against the surface  34  to be washed and to wipe across the same during an operating state of the wipers. The wiper lip, which is not visible, is held by means of spring rails, which are not visible, in the wind deflector unit  56 . 
         [0022]    The wiper arm arrangement  10  comprises a wiper fluid channeling unit  12 . The wiper fluid channeling unit  12  has a main extension direction  60  which corresponds to a main extension direction  50  of the wiper arm  20  in an installed state. The wiper fluid channeling unit  12  has a wiper fluid duct  14 . The wiper fluid duct  14  is designed to channel wiper fluid along the main extension direction  50  of the wiper arm  20 . The wiper fluid duct  14  comprises a cylindrical recess  62 . The cylindrical recess  62  of the wiper fluid duct  14  extends along the main extension direction  60  of the wiper fluid channeling unit  12  across the entire length of said wiper fluid channeling unit  12 . The cylindrical recess  62  extends parallel to the main extension direction  60  of the wiper fluid channeling unit  12 . The cylindrical recess  62  is delimited by a base body  64  of the wiper fluid duct  14  ( FIG. 3 ). 
         [0023]    The wiper fluid channeling unit  12  furthermore has a coupling unit  16 . The coupling unit  16  is designed to be connected to the wiper stem  18  of the wiper arm  20 . The coupling unit  16  is designed to connect the wiper fluid channeling unit  12  to the wiper stem  18  of the wiper arm  20 . The coupling unit  16  is designed to be connected to the second wiper arm segment  44  of the wiper stem  18 . In addition, the coupling unit  16  has a clip fastening element  22 . The coupling element  16  has a base body  66  which comprises the clip fastening element  22 . The clip fastening element  22  consists of two attachment webs  68 ,  68 ′. The attachment webs  68 ,  68 ′ are each formed by detent elements. The attachment webs  68 ,  68 ′ have, when viewed in a plane perpendicular to the main extension direction  60  of the wiper fluid channeling unit  12 , in each case an L-shaped cross-sectional shape, wherein the two attachment webs  68 ,  68 ′ are mirrored to one another. A short side  70 ,  70 ′ of the L-shaped attachment webs  68 ,  68 ′ is in each case partially detached and protrudes in each case perpendicularly to an associated long side  72 ,  72 ′. The short sides  70 ,  70 ′ of the attachment webs  68 ,  68 ′ protrude respectively from the long sides  72 ,  72 ′ so as to face each other. The long sides  72 ,  72 ′ of the attachment webs  68 ,  68 ′ extend parallel to one another. The two attachment webs  68 ,  68 ′ are connected to one another via a base side  74  of the base body  66  of the coupling unit  16  at the ends of the long sides  72 ,  72 ′ that face away from the short sides  70 ,  70 ′( FIGS. 2, 3 ). 
         [0024]    The coupling unit  16  further comprises a wiper arm receiving region  24 . The wiper arm receiving region  24  is designed to receive the wiper stem  18  of the wiper arm  20 . The wiper arm receiving region  24  is designed to receive the second wiper arm segment  44  of the wiper stem  18 . In addition, the wiper arm receiving region  24  has approximately the cross-sectional shape of the wiper stem  18 . The wiper arm receiving region  24  has, when viewed in a plane perpendicular to the main extension direction  60  of the wiper fluid channeling unit  12 , a cross-sectional shape which approximately corresponds to a cross-sectional shape of the wiper stem  18 . The wiper arm receiving region  24  extends along the main extension direction  60  of the wiper fluid channeling unit  12  across the entire length of said wiper fluid channeling unit  12 . The wiper arm receiving region  24  extends parallel to the main extension direction  60  of the wiper fluid channeling unit  12 . The wiper arm receiving region  24  is, when viewed in a plane perpendicular to the main extension direction  60  of the wiper fluid channeling unit  12 , delimited on four sides by the base body  66  of the coupling unit  16 . The wiper arm receiving region  24  is delimited in one direction by the base side  74  of the base body  66 . Said wiper arm receiving region  24  is delimited in two further directions by the two long sides  72 ,  72 ′ of the two attachment webs  68 ,  68 ′. Said wiper arm receiving region  24  is delimited in a fourth direction by the two short sides  70 ,  70 ′ of the two attachment webs  68 ,  68 ′. A gap  76  is arranged between the two short sides  70 ,  70 ′ of the two attachment webs  68 ,  68 ′, via which gap the wiper stem  18  of the wiper arm  20  can be brought into said wiper arm receiving region  24 . As a result, the two attachment webs  68 ,  68 ′ are resiliently deflected outwards by pressure; thus enabling the gap  76  to become larger and the wiper stem  18  to be pushed through said gap  76  ( FIGS. 2, 3 ). 
         [0025]    The coupling unit  16  has furthermore two blocking devices  26 ,  26 ′. The blocking devices  26  are designed to secure the wiper fluid channeling unit  12  on the wiper stem  18  of the wiper arm  20 . The blocking device  26  is intended to prevent an inadvertent release of the wiper fluid channeling unit  12  from the wiper stem  18 , for example as a result of an airstream. The blocking devices  26 ,  26 ′ each comprise two retaining plates  78 ,  80  and a threaded pin  82 . The blocking elements  26 ,  26 ′ are of identical design. The retaining plates  78 ,  80  are each semicircular and are integrally connected to the two attachment webs  68 ,  68 ′. The first retaining plates  78  of the blocking devices  26 ,  26 ′ each have a through bore and are disposed at one end of the short side  70  of the first attachment web  68  of the coupling unit  16 . The second retaining plates  80  of the blocking devices  26 ,  26 ′ each have a threaded bore and are disposed at one end of the short side  70 ′ of the second attachment web  68 ′ of the coupling unit  16 . By means of the threaded pins  82 , the first retaining plates  78  can each be screwed via the through holes to the associated second retaining plate  80  via the threaded bores. The second blocking devices  26 ,  26 ′ prevent the attachment webs  68 ,  68 ′ from being resiliently deflected outwards in a closed state of the blocking devices  26 ,  26 ′. In principle, another design of the at least one blocking device  26 ,  26 ′ that appears useful to the person skilled in the art would, however, also be conceivable. The at least one blocking device  26 ,  26 ′ can thereby have a completely differing function. The function is particularly critical for the at least one blocking device  26 ,  26 ′ ( FIGS. 1, 3 ). 
         [0026]    The wiper fluid duct  14  of the wiper fluid channeling unit  12  is formed integrally with the coupling unit  16  of said wiper fluid channeling unit  12 . The base body  64  of the wiper fluid duct  14  and the base body  66  of the coupling unit  16  are produced from a single cast. The base body  64  of the wiper fluid duct  14  and the base body  66  of the coupling unit  16  consist of the same material. The base body  64  of the wiper fluid duct  14  and the base body  66  of the coupling unit  16  consist of plastic. The wiper fluid duct  14  is disposed on a side of the coupling unit  16  facing away from the gap  76  ( FIGS. 2, 3 ). 
         [0027]    The wiper arm arrangement  10  further comprises a wind deflector element  28 . The wiper fluid channeling unit  12  comprises the wind deflector element  28 . The wind deflector element  28  is formed integrally with the wiper fluid duct  14  and the coupling unit  16  of the wiper fluid channeling unit  12 . The wind deflector element  28  extends along the main extension direction  60  of the wiper fluid channeling unit  12  over the entire length of said wiper fluid channeling unit  12 . The wind deflector element  28  directly adjoins the first attachment web  68  of the coupling unit  16  in a direction oriented away from the second attachment web  68 ′. Said wind deflector element  28  extends in width, perpendicularly to the main extension direction  60  of the wiper fluid channeling unit  12 , substantially across the entire wiper fluid duct  14  and the entire coupling unit  16 . In principle, it would, however, also be conceivable for the wiper arm arrangement  10  respectively the wiper fluid channeling unit  12  not to have a wind deflector element  28 , as depicted by the dashed line in  FIGS. 2 and 3 . 
         [0028]    The wiper fluid channeling unit  12  has, with the exception of the two blocking devices  26 ,  26 ′, a constant cross-sectional shape over the entire length thereof, when viewed along the main extension direction  60  of the wiper fluid channeling unit  12 . Said wiper fluid channeling unit  12  is produced in an extrusion process with the exception of the two blocking devices  26 ,  26 ′. The two blocking devices  26 ,  26 ′ are subsequently molded to said wiper fluid channeling unit  12 . In principle, other production methods that appear useful to the person skilled in the art are also conceivable. 
         [0029]    In addition, the wiper arm arrangement  10  comprises a wiper nozzle unit  30 . The wiper nozzle unit  30  has two wiper nozzle elements  32 ,  32 ′. The wiper nozzle elements  32 ,  32 ′ are formed in each by nozzles. The wiper nozzle elements  32 ,  32 ′ are furthermore designed to apply wiper fluid to a surface  34  to be washed. The wiper nozzle elements  32 ,  32 ′ are designed to apply wiper fluid to a window pane. The wiper nozzle elements  32 ,  32 ′ are integrated into a base body  84  of the wiper nozzle unit  30 . The wiper nozzle elements  32 ,  32 ′ are connected by means of a wiper fluid duct which is introduced into the base body  84  and is not visible her. The wiper fluid duct that is no longer visible in the drawings is led to an outer edge of the base body  84 . The wiper nozzle elements  32 ,  32 ′ further have in each case a discharge direction  86 ,  86 ′ which is directed towards the surface  34  to be washed. In addition, the wiper nozzle unit  30  comprises a coupling unit  38 . The coupling unit  38  of the wiper nozzle unit  30  is designed to be connected to the wiper arm  20  in an installed state. Said coupling unit  38  of the wiper nozzle unit  30  is designed in an installed state to be connected to the wiper arm adapter  52  of the wiper arm  20 . Said coupling unit  38  of the wiper nozzle unit  30  is no longer visible in the coupling thereof to the wiper arm adapter  52 . Said coupling unit  38  of the wiper nozzle unit  30  is furthermore designed to connect the wiper nozzle unit  30  to the wiper arm adapter  52 . Said coupling unit  38  of the wiper nozzle unit  30  is formed integrally with the base body  84  of the wiper nozzle unit  30  ( FIG. 1 ). In principle, it is, however, also conceivable for the wiper nozzle unit  30  to be integrated into the wiper blade  40 , in particular into the wiper blade adapter  54 . 
         [0030]    In addition, the wiper arm arrangement  10  comprises a first connecting element  36 . The first connecting element  36  connects the wiper nozzle unit  30  to the wiper fluid duct  14  of the wiper fluid channeling unit  12 . The first connecting element  36  connects the wiper fluid duct of the wiper nozzle unit  30 , said wiper fluid duct not being visible, to the wiper fluid duct  14  of the wiper fluid channeling unit  12 . Said first connecting element  36  is formed by a tube. Said first connecting element  36  is adhesively bonded with a first end thereof in an end region of the wiper fluid duct  14  of the wiper fluid channeling unit  12 . In addition, said first connecting element  36  is adhesively bonded with a second end thereof opposite to the first end in an end region of the wiper fluid duct of the wiper nozzle unit  30  ( FIG. 1 ), said wiper fluid duct not being visible. In principle, it would, however, also be conceivable for said first connecting element  36  to be connected in each case via connecting pieces to the wiper nozzle unit  30  and/or to the wiper fluid channeling unit  12 . 
         [0031]    The wiper arm arrangement further comprises a second connecting element  88 . The second connecting element  88  connects a wiper fluid feed  90  to the wiper fluid duct  14  of the wiper fluid channeling unit  12 . The wiper fluid feed  90  is formed by a wiper fluid supply tube. The second connecting element  12  is formed by a fixed pipe. Said second connecting element  12  is adhesively bonded with a first end thereof in an end region of the wiper fluid feed  90 . Said second connecting element  88  is further is adhesively bonded with a second end thereof opposite to the first end in an end region of the wiper fluid duct  14  of the wiper fluid channeling unit  12  ( FIGS. 1, 2 ). In principle, it would, however, also be conceivable for the connecting element  88  to be already produced as one piece with the wiper fluid duct  14 . In addition, it would also be conceivable in principle for the connecting element  88  to in each case be connected via a connecting piece to the wiper fluid channeling unit  12  and/or to the wiper fluid feed  90 . 
         [0032]    The wiper arm  20  and the wiper arm arrangement  10  form a wiper arm system.