Abstract:
The invention is based on a wiper device for a motor vehicle window, with a wiper arm adapter unit ( 10   a - 10   o ) and a wiper blade adapter unit ( 12   a - 12   o ) which, in a fitted state, form a form-fitting connection. It is proposed that the wiper device has at least one blocking means ( 14   a - 14   o ) which is mounted movably on the wiper blade adapter unit ( 12   a - 12   o ) for restricting the wiper arm adapter unit ( 10   a,    10   o ) in the freedom of movement thereof, in the fitted state, in a direction deviating from a longitudinal direction ( 16   a - 16   o ).

Description:
BACKGROUND OF THE INVENTION 
       [0001]    The invention relates to a wiper device. 
         [0002]    A wiper device for a motor vehicle window, having a wiper arm adapter unit and having a wiper blade adapter unit which form a positive fit in an assembled state, is already known. 
       SUMMARY OF THE INVENTION 
       [0003]    The invention is based on a wiper device for a motor vehicle window, having a wiper arm adapter unit and having a wiper blade adapter unit which form a positive fit in an assembled state. 
         [0004]    It is proposed that the wiper device has at least one locking means which is mounted in a movable manner on the wiper blade adapter unit, said locking means being provided for restricting the wiper arm adapter unit in terms of its freedom of movement in a direction differing from a longitudinal direction in the assembled state. By means of a corresponding design, a coupling of the wiper blade adapter unit to the wiper arm adapter unit can be attained in a particularly reliable and comfortable manner. In this context, a “wiper blade adapter unit” should be understood to mean in particular an adapter unit which has a contact region to a wiper blade component and which is captively connected to the wiper blade component and which is intended for providing a coupling region of the wiper blade component for coupling to and/or contact with the wiper arm adapter unit. The wiper blade adapter unit preferably has a main body which provides a coupling surface for coupling to and/or contact with the wiper arm adapter unit. In this context, a “wiper arm adapter unit” should be understood to mean in particular an adapter unit which has a contact region to a wiper arm component and which is captively connected to the wiper arm component and which is intended for providing a coupling region of the wiper arm component for coupling to and/or contact with the wiper blade adapter unit. In this context, “intended” should be understood to mean in particular specially equipped and/or configured. In this context, an “assembled state” should be understood to mean in particular a state in which the wiper blade adapter unit and the wiper arm adapter unit are coupled to one another. In this context, a “longitudinal direction” should be understood to mean in particular a direction which extends at least substantially parallel to a main direction of extent of the wiper blade adapter unit. In this context, “substantially” should be understood to mean in particular a deviation of less than 10°. 
         [0005]    If the locking means is mounted so as to be pivotable relative to a main body of the wiper blade adapter unit about a pivot axis, a coupling of the wiper blade adapter unit to the wiper arm adapter unit can be attained in a particularly simple manner. 
         [0006]    If the pivot axis is arranged at least substantially parallel to a longitudinal direction of the wiper arm adapter unit, a coupling of the wiper blade adapter unit to the wiper arm adapter unit can be attained in a particularly reliable manner. 
         [0007]    In a further embodiment, it is proposed that the pivot axis is arranged at least substantially parallel to a transverse direction of the wiper arm adapter unit, whereby a particularly simple construction of the wiper arm adapter unit can be attained. In this context, a “transverse direction” should be understood to mean in particular a direction which is perpendicular to the longitudinal direction and perpendicular to a vertical direction and which runs parallel to a wiper plane. In this context, a “wiper plane” should be understood to mean in particular an idealized plane which, during operation, is wiped by a wiper blade fastened to the wiper blade adapter unit. Here, in this context, a “vertical direction” should be understood to mean in particular a direction which is perpendicular to the wiper plane. 
         [0008]    If the locking means is mounted so as to be linearly displaceable relative to a main body of the wiper blade adapter unit, the wiper arm adapter unit can be of particularly stable design. In this context, “linearly displaceable” should be understood in particular to mean a translatory movement. 
         [0009]    If the wiper device has at least one securing means which is provided for preventing a movement of the locking means relative to a main body of the wiper blade adapter unit in at least one operating state, operational reliability of the wiper device can be advantageously increased. 
         [0010]    In this context, a “securing means” should be understood to mean in particular a means which forms a non-positive and/or positive fit with a component of the wiper device. 
         [0011]    It is also proposed that, in at least one operating state, the locking means forms at least a major part of a visible outer surface of the wiper blade adapter unit, whereby the wiper device can be advantageously protected against external influences such as, for example, water. In this context, a “major part” should be understood to mean in particular more than 50%, preferably 70%. 
         [0012]    In a further embodiment of the invention, it is proposed that the locking means is in the form of a detent means. In this way, rapid coupling of the wiper blade adapter unit to the wiper arm adapter unit can be achieved. In this context, a “detent means” should be understood to mean in particular a means which undergoes an elastic deformation during an assembly sequence. 
         [0013]    If the detent means is formed in one piece with a main body of the wiper arm adapter unit, the wiper blade adapter unit can be produced particularly inexpensively. “In one piece” should be understood to mean in particular cohesively connected, such as for example by means of a welding process and/or adhesive bonding process etc., and particularly advantageously integrally formed, such as by means of production by casting and/or by means of production in a single-component or multi-component injection molding process. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]    Further advantages will emerge from the following description of the drawing. The drawing illustrates exemplary embodiments of the invention. The drawings, the description and claims contain numerous features in combination. A person skilled in the art will expediently also consider the features individually and combine them to form further meaningful combinations. In the drawing: 
           [0015]      FIGS. 1   a  to  1   c  show a perspective view of a wiper device in an assembly sequence, 
           [0016]      FIGS. 2   a  to  2   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0017]      FIGS. 3   a  to  3   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0018]      FIGS. 4   a  to  4   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0019]      FIGS. 5   a  and  5   b  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0020]      FIGS. 6   a  to  6   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0021]      FIGS. 7   a  to  7   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0022]      FIGS. 8   a  to  8   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0023]      FIGS. 9   a  to  9   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0024]      FIGS. 10   a  to  10   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0025]      FIGS. 11   a  to  11   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0026]      FIGS. 12   a  to  12   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0027]      FIGS. 13   a  to  13   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0028]      FIGS. 14   a  and  14   b  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, and 
           [0029]      FIGS. 15   a  and  15   b  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence. 
       
    
    
     DETAILED DESCRIPTION 
       [0030]      FIG. 1   a  shows a wiper device for a motor vehicle window, having a wiper arm adapter unit  10   a  and a wiper blade adapter unit  12   a  in an open state. On the wiper blade adapter unit  12   a  there is arranged a movably mounted locking means  14   a  which is formed by a hood element  18   a.    
         [0031]    The hood element  18   a  is pivotably mounted on a main body  22   a  of the wiper blade adapter unit  12   a  at a rotary joint  20   a.  The main body  22   a  connects the wiper blade adapter unit  12   a  to a separately formed wiper blade  24   a.  It is however also conceivable in this context for the wiper blade adapter unit  12   a  to be formed in one piece with the wiper blade  24   a.    
         [0032]    The wiper arm adapter unit  10   a  is formed in one piece with a wiper arm  26   a.  It is however also conceivable in this context for the wiper arm adapter unit  10   a  to be formed separately from the wiper arm  26   a  and for these to be connected to one another by means of a suitable connecting element. 
         [0033]    The wiper arm adapter unit  10   a  has two back stops  28   a  and a fastening lug  30   a.  The back stops  28   a  terminate flush with side walls  32   a  of the wiper arm adapter unit  10   a.  The fastening lug  30   a  is formed as a projection on one end of the wiper arm adapter unit  10   a  and has a fastening recess  34   a.    
         [0034]    The main body  22   a  of the wiper blade adapter unit  12   a  has two integrally connected counterpart stops  36   a  which are arranged on side walls  38   a  of the main body  22   a.    
         [0035]    On two lateral inner surfaces  40   a  of the hood element  18   a  there are arranged two projections, formed in one piece with the inner surfaces  40   a,  as securing means  42   a.  The securing means  42   a  can be deflected out of an initial position and move back into the initial position automatically. 
         [0036]    For assembly with the wiper blade adapter unit  12   a,  the wiper arm adapter unit  10   a  is lowered on to the main body  22   a  counter to a vertical direction  44   a.  Here, the back stops  28   a  terminate flush with the counterpart stops  36   a  and thus prevent a longitudinal movement, parallel to a longitudinal direction  16   a,  of the wiper arm adapter unit  10   a  relative to the wiper blade adapter unit  12   a  ( FIG. 1   b ). 
         [0037]    As is also shown in figure lb, the wiper arm adapter unit  10   a  rests in a positively engaging manner on the main body  22   a.  A movement relative to the main body  22   a  is possible only in a vertical direction  44   a.  To prevent said movement, the hood element  14   a  pivots by means of the rotary joint  20   a  about a pivot axis  46   a  arranged substantially in a transverse direction  54   a,  and surrounds the wiper arm adapter unit  10   a  in a positively engaging fashion. 
         [0038]    The securing means  42   a  engage under the counterpart stops  36   a  and prevent a pivoting movement of the hood element  18   a  back into the open state. The wiper arm adapter unit  10   a  and the wiper blade adapter unit  12   a  are thus also secured in their vertical direction  44   a  and are situated in an assembled state ( FIG. 1   c ). The hood element  14   a  forms a major part of a visible outer surface of the wiper blade adapter unit  12   a.    
         [0039]      FIGS. 2 to 15  show fourteen further exemplary embodiments of the invention. The descriptions given below are restricted substantially to the differences between the exemplary embodiments, wherein with regard to consistent components, features and functions, reference may be made to the description of the first exemplary embodiment. For distinguishing between the exemplary embodiments, the letters a in the reference signs of the exemplary embodiment in  FIG. 1  are replaced by the letters b to o in the reference signs of the exemplary embodiments of  FIGS. 2 to 15 . With regard to identically designated components, in particular with regard to components with the same reference signs, reference may basically also be made to the drawings and/or the description of the first exemplary embodiment. 
         [0040]      FIG. 2   a  shows a second exemplary embodiment of a wiper device having a wiper arm adapter unit  10   b  and a wiper blade adapter unit  12   b  in an open state. The wiper arm adapter unit  10   b  corresponds to the wiper arm adapter unit  10   a  from the first exemplary embodiment. 
         [0041]    The wiper blade adapter unit  12   b  has a main body  22   b  and a locking means  14   b  which is formed by a hood element  18   b  and which is mounted on the main body  22   b  so as to be displaceable along a longitudinal direction  16   b.    
         [0042]    The main body  22   b  has two counterpart stops  36   b  which prevent a movement of the wiper blade adapter unit  12   b  relative to the wiper arm adapter unit  10   b  along the longitudinal direction  16   b  in an assembled state. Furthermore, the main body  22   b  has a rest surface  48   b  for supporting the wiper arm adapter unit  10   b.    
         [0043]      FIG. 2   b  shows the wiper device in a second assembly step in which the wiper arm adapter unit  10   b  rests on the rest surface  48   b  of the wiper blade adapter unit  12   b.  Two back stops  28   b  of the wiper arm adapter unit  10   b  form a positive fit with the counterpart stops  36   b  of the wiper blade adapter unit  12   b.    
         [0044]      FIG. 2   c  shows the wiper device in an assembled state in which the hood element  18   b  is arranged over a fastening lug  30   b  of the wiper arm adapter unit  10   b  and thus a movement of the wiper arm adapter unit  10   b  relative to the wiper blade adapter unit  12   b  is prevented both in a longitudinal direction  16   b  and also in a vertical direction  44   b.    
         [0045]    To prevent a movement back into the open state, a securing means  42   b  is provided on the hood element  18   b,  said securing means being in the form of a detent means  56   b  and latching onto the fastening lug  30   b.  In this context, however, other securing means which would appear expedient to a person skilled in the art and which prevent an undesired movement of the hood element  18   b  back into the open state are also conceivable. 
         [0046]      FIG. 3   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   c  and a wiper blade adapter unit  12   c  in an open state. The wiper arm adapter unit  10   c  corresponds to the wiper arm adapter unit  10   a  from the first exemplary embodiment. 
         [0047]    The wiper blade adapter unit  12   c  has a locking means  14   c  which is mounted so as to be pivotable about a pivot axis  46   c  and which is in the form of a cover flap  50   c.  The pivot axis  46   c  is arranged substantially parallel to a longitudinal direction  16   c.    
         [0048]    The wiper blade adapter unit  12   c  also has a main body  22   c  with an outer surface  52   c . The outer surface  52   c  closes off the wiper blade adapter unit  12   c  to the outside, that is to say in the direction of a space surrounding the wiper device. A counterpart stop  36   c  is also arranged on the main body  22   c.    
         [0049]    The cover flap  50   c  is arranged laterally on the wiper blade adapter unit  12   c  and thus allows the wiper arm adapter unit  10   c  to be received in a linear movement running substantially parallel to a transverse direction  54   c.    
         [0050]      FIG. 3   b  shows a second assembly step in which the wiper arm adapter unit  10   c  has been pushed into the main body  22   c.  The outer surface  52   c  restricts the freedom of movement of the wiper arm adapter unit  10   c  relative to the wiper blade adapter unit  12   c  in a vertical direction  44   c.    
         [0051]    The counterpart stop  36   c  forms a positive fit with a back stop  28   c  of the wiper arm adapter unit  10   c.  A freedom of movement of the wiper arm adapter unit  10   c  is thus restricted in a longitudinal direction  16   c.  A movement of the wiper arm adapter unit  10   c  is possible only in a transverse direction  54   c.    
         [0052]      FIG. 3   c  shows the wiper device in an assembled state. The cover flap  50   c  is closed and terminates flush with an outer surface  52   c  of the wiper blade adapter unit  12   c.  In this way, the wiper arm adapter unit  10   c  is restricted in terms of its freedom of movement in the transverse direction  54   c.    
         [0053]      FIG. 4   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   d  and a wiper blade adapter unit  12   d  in an open state. The wiper arm adapter unit  10   d  corresponds to the wiper arm adapter unit  10   a  from the first exemplary embodiment. 
         [0054]    The wiper blade adapter unit  12   d  has a main body  22   d  with a locking means  14   d  which is in the form of a cover flap  50   d.  The cover flap  50   d  is mounted so as to be pivotable about a pivot axis  46   d.  The pivot axis  46   d  is arranged substantially parallel to a transverse direction  54   d  of the wiper arm adapter unit  10   d.    
         [0055]    The main body  22   d  has an outer surface  52   d  which substantially forms a termination of the wiper arm adapter unit  10   d  in an outward direction. Furthermore, a counterpart stop  36   d  is arranged on the main body  22   d.    
         [0056]    The cover flap  50   d  is arranged laterally on the wiper blade adapter unit  12   d  and thus allows the wiper arm adapter unit  10   d  to be received in a linear movement running substantially parallel to a transverse direction  54   d.    
         [0057]      FIG. 4   b  shows the wiper device in a second assembly step in which the wiper arm adapter unit  10   d  has been pushed into the main body  22   d.  The outer surface  52   d  restricts freedom of movement of the wiper arm adapter unit  10   d  in a vertical direction  44   d.    
         [0058]    The counterpart stop  36   d  forms a positive fit with a back stop  28   d  of the wiper arm adapter unit  10   d.  A freedom of movement of the wiper arm adapter unit  10   d  is thereby restricted in a longitudinal direction  16   d.  A movement of the wiper arm adapter unit  10   d  relative to the wiper blade adapter unit  12   d  is possible only in the transverse direction  54   d.    
         [0059]      FIG. 4   c  shows the wiper device in an assembled state. The cover flap  50   d  has been pivoted about the pivot axis  46   d  and terminates flush with an outer surface  52   d  of the wiper blade adapter unit  12   d.  The wiper arm adapter unit  10   d  is restricted in terms of its freedom of movement in the transverse direction  54   d  by the cover flap  50   d.    
         [0060]      FIG. 5   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   e  and a wiper blade adapter unit  12   e  in an open state. The wiper arm adapter unit  10   e  corresponds to the wiper arm adapter unit  10   a  from the first exemplary embodiment. 
         [0061]    The wiper blade adapter unit  12   e  has a main body  22   e  with a locking means  14   e.  The locking means  14   e  has a first and a second flexible detent means  56   e.  The first and second detent means  56   e  is formed in each case in one piece with the main body  22   e.    
         [0062]    The first and second detent means  56   e  has in each case one detent lug  58   e  over which the wiper blade adapter unit  12   e  can be pushed. Here, the first and second detent means  56   e  is deflected counter to a deflection force in a vertical direction  44   e.  The main body  22   e  has a counterpart stop  36   e  which is arranged on a rear end of the wiper blade adapter unit  12   e.    
         [0063]      FIG. 5   b  shows the wiper device in an assembled state. The wiper arm adapter unit  10   e  has been pushed onto the main body  22   e  and forms a positive fit therewith. Back stops  28   e  of the wiper arm adapter unit  10   e  bear flush against the counterpart stop  36   e  of the wiper blade adapter unit  12   e.  In this way, the wiper arm adapter unit  10   e  is restricted in terms of its freedom of movement in a longitudinal direction  16   e.    
         [0064]    The first and second detent means  56   e  is situated, driven in each case by the deflection force, in its initial position and thus restricts the wiper arm adapter unit  10   e  in terms of its freedom of movement in a transverse direction  54   e.    
         [0065]      FIG. 6   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   f  and a wiper blade adapter unit  12   f  in an open state. 
         [0066]    The wiper blade adapter unit  12   f  has a main body  22   f,  with outer surfaces  52   f  and with a locking means  14   f  which is formed by a cover flap  50   f  which is mounted so as to be pivotable about a pivot axis  46   f.  The pivot axis  46   f  extends parallel to a longitudinal direction  16   f.    
         [0067]      FIG. 6   b  shows the wiper device in a second assembly step. The wiper arm adapter unit  10   f  has been pushed into the main body  22   f  of the wiper blade adapter unit  12   f.  The wiper arm adapter unit  10   f  is restricted in terms of its freedom of movement in a vertical direction  44   f  and in the longitudinal direction  16   f  by the outer surfaces  52   f.  A movement of the wiper arm adapter unit  10   f  is possible only in a transverse direction  54   f.    
         [0068]      FIG. 6   c  shows the wiper device in an assembled state. The cover flap  50   f  has been pivoted onto the main body  22   f  and terminates flush with the outer surfaces  52   f.  Securing means  42   f  arranged on the cover flap  50   f  latch onto the main body  22   f  and prevent the cover flap  50   f  from pivoting back into the open state. 
         [0069]      FIG. 7   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   g  and a wiper blade adapter unit  12   g  in an open state. The wiper arm adapter unit  10   g  has a wiper arm  26   g  with a fastening recess  34   g.    
         [0070]    The wiper blade adapter unit  12   g  has a main body  22   g  with a locking means  14   g.  The locking means  14   g  is formed by a detent means  56   g  which is formed in one piece with the main body  22   g.  The main body  22   g  also has a cover flap  50   g  and a fastening pin  60   g.  The wiper arm adapter unit  10   g  bears with an outer end against an inner surface  40   g  of the main body  22   g  of the wiper blade adapter unit  12   g.    
         [0071]      FIG. 7   b  shows the wiper device in a second assembly step. The wiper arm adapter unit  10   g  has been rotated about a vertical axis  62   g  which is arranged parallel to a vertical direction  44   g.  The outer end of the wiper arm adapter unit  10   g  is thus restricted in terms of its freedom of movement in the vertical direction  44   g  and also in a transverse direction  54   g.    
         [0072]      FIG. 7   c  shows the wiper device in a third assembly step. The wiper arm adapter unit  10   g  has been rotated about a transverse axis  64   g  which runs parallel to the transverse direction  54   g.  The fastening recess  34   g  of the wiper arm  26   g  terminates flush with the fastening pin  60   g . The fastening pin  60   g  thereby prevents a movement of the wiper arm adapter unit  10   g  in a longitudinal direction  16   g.    
         [0073]    During assembly, the detent means  56   g  is deflected by the wiper arm adapter unit  10   g  out of an initial position counter to a deflection force. In the third assembly step, the detent means  56   g  is situated in the initial position again after a deflection. In an assembled state, the cover flap  50   g  terminates flush with an outer surface  52   g  of the main body  22   g.    
         [0074]      FIG. 8   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   h  and a wiper blade adapter unit  12   h  in an open state. The wiper arm adapter unit  10   h  has a fastening recess  34   h  in a wiper arm  26   h.    
         [0075]    The wiper blade adapter unit  12   h  has a locking means  14   h  which is mounted so as to be linearly displaceable. The locking means  14   h  is formed by a hood element  18   h.  The hood element  18   h  can be displaced along a guide rail  66   h  of a main body  22   h  of the wiper blade adapter unit  12   h  parallel to a longitudinal direction  16   h.    
         [0076]      FIG. 8   b  shows the wiper device in a second assembly step. The wiper arm adapter unit  10   h  is arranged in the guide rail  66   h.  The fastening recess  34   h  terminates flush with a fastening pin  60   h  and thereby restricts the wiper arm adapter unit  10   h  in terms of its freedom of movement in the longitudinal direction  16   h.    
         [0077]    The guide rail  66   h  prevents a movement of the wiper arm adapter unit  10   h  in a transverse direction  54   h.  A movement of the wiper arm adapter unit  10   h  is possible only in a vertical direction  44   h.  To prevent the movement of the wiper arm adapter unit  10   h  in a vertical direction  44   h,  the hood element  18   h  is pushed along the guide rail  66   h.    
         [0078]      FIG. 8   c  shows the wiper device in an assembled state. The hood element  18   h  forms a major part of a visible outer surface of the wiper blade adapter unit  12   h.  To prevent the hood element  18   h  from sliding back in an undesired manner, the hood element  18   h  has detent elements (not illustrated) on an inner surface. 
         [0079]      FIG. 9   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   i  and a wiper blade adapter unit  12   i  in an open state. The wiper arm adapter unit  10   i  has a fastening recess  34   i  arranged in a wiper arm  26   i.    
         [0080]    The wiper blade adapter unit  12   i  has a main body  22   i  with a guide rail  66   i  and with a locking means  14   i.  The locking means  14   i  is in the form of a detent means  56   i  which is integrally connected to the main body  22   i.  A projection  68   i  is arranged on one end of the guide rail  66   i.    
         [0081]      FIG. 9   b  shows the wiper device in a second assembly step. One end of the wiper arm adapter unit  10   i  has been inserted under the projection  68   i.  A rotation of the wiper arm adapter unit  10   i  about a transverse axis  64   i  brings the wiper device into an assembled state ( FIG. 9   c ). Here, the detent means  56   i  is initially deflected by the wiper arm adapter unit  10   i  and subsequently latches into the fastening recess  34   i.    
         [0082]    In the assembled state, the wiper arm adapter unit  10   i  is restricted in terms of its freedom of movement in a transverse direction  54   i.  The detent means  56   i  restricts the wiper arm adapter unit  10   i  in a longitudinal direction  16   i  and in a vertical direction  44   i.    
         [0083]      FIG. 10   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   j  and a wiper blade adapter unit  12   j  in an open state. The wiper arm adapter unit  10   j  has a fastening recess  34   j  arranged in a wiper arm  26   j.    
         [0084]    The wiper blade adapter unit  12   j  has a main body  22   j  with a guide rail  66   j  and with a locking means  14   j.  The locking means  14   j  is in the form of a detent means  56   j  which is integrally connected to the guide rails  66   j.  A projection  68   j  is arranged on one end of the guide rail  66   j.    
         [0085]      FIG. 10   b  shows the wiper device in a second assembly step. One end of the wiper arm adapter unit  10   j  has been inserted under the projection  68   j.  A rotation of the wiper arm adapter unit  10   j  about a transverse axis  64   j  brings the wiper device into an assembled state ( FIG. 10   c ). Here, the detent means  56   j  is initially deflected by the wiper arm adapter unit  10   j  in a transverse direction  54   j  and subsequently latches over the wiper arm  26   j.  The fastening recess  34   j  terminates flush with a fastening pin  60   j  which is arranged on a rest surface  48   j  of the main body  22   j.    
         [0086]    In the assembled state, the wiper arm adapter unit  10   j  is restricted in terms of its freedom of movement in a transverse direction  54   j.  The detent means  56   j  restricts the wiper arm adapter unit  10   j  only in a vertical direction  44   j.  A movement of the wiper arm adapter unit  10   j  in the longitudinal direction  16   j  is prevented by a positive fit between the fastening recess  34   j  and the fastening pin  60   j.    
         [0087]      FIG. 11   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   k  and a wiper blade adapter unit  12   k  in an open state. 
         [0088]    The wiper arm adapter unit  10   k  has a fastening element  70   k  and a support plate  72   k . The fastening element  70   k  extends in the manner of a cylinder in a transverse direction  54   k  of the wiper arm adapter unit  10   k.  The support plate  72   k  extends initially in the transverse direction  54   k  and then bends away counter to a vertical direction  44   k.    
         [0089]    The wiper blade adapter unit  12   k  has a freely movable locking means  14   k  with a substantially U-shaped profile, and two substantially C-shaped detent recesses  74   k.    
         [0090]      FIG. 11   b  shows the wiper device in a second assembly step. The support plate  72   k  of the wiper arm adapter unit  10   k  rests on a main body  22   k  of the wiper blade adapter unit  12   k . The fastening element  70   k  is arranged in a positively engaging manner in a depression  76   k , which extends in the vertical direction  44   k,  of the main body  22   k.    
         [0091]    A freedom of movement of the wiper arm adapter unit  10   k  is restricted in a longitudinal direction  16   k.  In the transverse direction  54   k,  the freedom of movement of the wiper arm adapter unit  10   k  relative to the wiper blade adapter unit  12   k  is restricted by the bent support plate  72   k  and by a wiper arm  26   k  which is connected to the wiper arm adapter unit  10   k.    
         [0092]      FIG. 11   c  shows the wiper device in an assembled state. The locking means  14   k  has been pushed over the main body  22   k  and engages into the latter, such that a movement in the vertical direction  44   k  is prevented. The detent recesses  74   k  engage around the fastening element  70   k  and form a detent connection therewith. In this way, the locking means  14   k  restricts the wiper arm adapter unit  10   k  in terms of its freedom of movement in the vertical direction  44   k.    
         [0093]      FIG. 12   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  101  and a wiper blade adapter unit  121  in an open state. The wiper arm adapter unit  101  has a fastening recess  341  and a back stop  281 . 
         [0094]    The wiper blade adapter unit  121  has a locking means  141  which is mounted so as to be pivotable about a pivot axis  461  and which is formed by a hood element  181 . The pivot axis  461  is arranged parallel to a transverse direction  541 . 
         [0095]    The wiper blade adapter unit  121  furthermore has a main body  221  with a fastening pin  601  which has a substantially square cross section. A counterpart stop  361  is arranged on the main body  221  on a side wall  381 . 
         [0096]      FIG. 12   b  shows the wiper device in a second assembly step. The wiper arm adapter unit  101  rests on the main body  221  of the wiper blade adapter unit  121 . The fastening recess  341  forms a positive fit with the fastening pin  601  and thereby prevents the movement of the wiper arm adapter unit  101  in a longitudinal direction  161  and in the transverse direction  541 . Furthermore, the freedom of movement in the longitudinal direction  161  is prevented by a positive fit between the counterpart stop  361  and the back stop  281 . 
         [0097]    To prevent a movement of the wiper arm adapter unit  101  in a vertical direction  441 , the locking means  141  is pivoted about the pivot axis  461 . Here, a part of the hood element  181  engages over the wiper blade adapter unit  121  and restricts the wiper arm adapter unit  101  in terms of its freedom of movement relative to the wiper blade adapter unit  121  in the vertical direction  441 . 
         [0098]      FIG. 12   c  shows the wiper device in an assembled state. The hood element  181  is prevented from pivoting back into the open state by a detent means  561  which is arranged in a recess  781  of the hood element  181 . The detent means  561  latches with the main body  221  in a manner familiar to a person skilled in the art. 
         [0099]      FIG. 13   a  shows a further exemplary embodiment of the wiper device from  FIGS. 12   a - c  having a locking means  14   m  which is in the form of a hood element  18   m  and which is arranged so as to be pivotably mounted on the wiper blade adapter unit  12   m.  The hood element  18   m  has a securing means  42   m  in the form of a pin. 
         [0100]      FIG. 13   b  shows the wiper device in a second assembly step. The hood element  18   m  forms a lateral guide for the wiper arm adapter unit  10   m.    
         [0101]      FIG. 13   c  shows the wiper device in an assembled state. The hood element  18   m  has been pivoted onto the wiper arm adapter unit  10   m  and forms a positive fit with the latter. The securing means  42   m  latches into a recess  78   m  of a main body  22   m  of the wiper blade adapter unit  12   m.  The recess  78   m  is arranged in a fastening pin  60   m  of the main body  22   m.  The hood element  18   m  is thus prevented from pivoting back into the open state. 
         [0102]      FIG. 14   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   n  and a wiper blade adapter unit  12   n  in an open state. The wiper arm adapter unit  10   n  has a fastening recess  34   n.    
         [0103]    The wiper blade adapter unit  12   n  has a locking means  14   n  which is mounted so as to be freely movable and which is formed by a hood element  18   n.  The wiper blade adapter unit  12   n  furthermore has a main body  22   n  with a fastening pin  60   n  which has a substantially square cross section. 
         [0104]    The fastening recess  34   n  forms a positive fit with the fastening pin  60   n  and thus prevents a movement of the wiper arm adapter unit  10   n  in a longitudinal direction  16   n  and in a transverse direction  54   n.  A movement of the wiper arm adapter unit  10   n  is possible only in a vertical direction  44   n.    
         [0105]      FIG. 14   b  shows the wiper device in an assembled state. The hood element  18   n  has been pushed over the wiper arm adapter unit  10   n  and latched into two depressions  76   n  arranged in the main body  22   n.  The hood element  18   n  is prevented from sliding back by a detent means  56   n  which is arranged on the main body  22   n.  The detent means  56   n  engages into a recess of the hood element  18   n.    
         [0106]      FIG. 15   a  shows a further exemplary embodiment of a wiper device having a wiper arm adapter unit  10   o  and having a wiper blade adapter unit  12   o  in an open state. The wiper arm adapter unit  10   o  has a fastening recess  34   o  and a back stop  280 . 
         [0107]    The wiper blade adapter unit  12   o  has a main body  22   o  with a locking means  14   o.  The locking means  14   o  is in the form of a detent means  56   o  which is integrally connected to the main body  22   o.  The main body  22   o  has a counterpart stop  36   o.    
         [0108]      FIG. 15   b  shows the wiper device in an assembled state. The wiper arm adapter unit  10   o  forms a positive fit with the main body  22   o.  A movement of the wiper arm adapter unit  10   o  in a transverse direction  54   o  is thereby prevented. The counterpart stop  36   o  of the main body  22   o  terminates flush with the back stop  28   o  of the wiper arm adapter unit  10   o  and thereby prevents a movement of the wiper arm adapter unit  10   o  relative to the wiper blade adapter unit  12   o  in a longitudinal direction  16   o.    
         [0109]    The detent means  56   o  latches into the fastening recess  34   o  of the wiper arm adapter unit  10   o.  A freedom of movement of the wiper arm adapter unit  10   o  in a vertical direction  44   o  is thereby restricted.