Abstract:
The invention is based on a wiper device for a motor vehicle window, with a wiper arm adapter unit ( 10   a - 10   d ) and a wiper blade adapter unit ( 12   a - 12   d ), which, in a fitted state, form a form-fitting connection, and with a fastening recess ( 20   a - 20   d ). It is proposed that the wiper device has a positionally fixed fastening means ( 18   a - 18   d ) for engaging in the fastening recess ( 20   a - 20   d ) in order to restrict the wiper arm adapter unit ( 10   a - 10   d ) in the freedom of movement thereof in the fitted state.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    A wiper device for a motor vehicle window having a wiper arm adapter unit and a wiper blade adapter unit which form a positively locking connection in an assembled state, and having a fastening recess is already known. 
       SUMMARY OF THE INVENTION 
       [0002]    The invention proceeds from a wiper device for a motor vehicle window having a wiper arm adapter unit and a wiper blade adapter unit which form a positively locking connection in an assembled state, and having a fastening recess. 
         [0003]    It is proposed that the wiper device has a stationary fastening means which is provided for engaging into the fastening recess, in order to limit the freedom of movement of the wiper arm adapter unit in the assembled state. As a result, particularly simple assembly of the wiper arm adapter unit with the wiper blade adapter unit can take place. In this context, a “wiper blade adapter unit” is to be understood to mean, in particular, an adapter unit which has a contact region with respect to a wiper blade component and is connected captively to the wiper blade component and is provided for producing a coupling region of the wiper blade component for coupling 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 and/or contact of the wiper arm adapter unit. In this context, a “wiper arm adapter unit” is to be understood to mean, in particular, an adapter unit which has a contact region with respect to a wiper arm component and is connected captively to the wiper arm component and is provided for producing a coupling region of the wiper arm component for coupling and/or contact with the wiper blade adapter unit. In this context, “provided” is to be understood to mean, in particular, specifically equipped and/or designed. In this context, a “mounted state” is to 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. 
         [0004]    If the fastening means limits the freedom of movement of the wiper arm adapter unit in the assembled state in a longitudinal direction of the wiper blade adapter unit, assembly of the wiper device can take place in a particularly simple manner. In this context, a “longitudinal direction” is to 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” is to be understood to mean, in particular, a deviation of less than 10°. 
         [0005]    It is proposed in a further refinement that the fastening means is arranged in a stationary manner on the wiper arm adapter unit, as a result of which the wiper device can be of particularly robust configuration. In this context, “stationary” is to be understood to mean, in particular, immovable. 
         [0006]    Furthermore, it is proposed that the fastening means is configured as a fastening pin. As a result, the fastening means can be produced in a particularly simple manner. 
         [0007]    If a main direction of extent of the fastening pin extends at least substantially parallel to a transverse direction of the wiper arm adapter unit, a movement of the wiper arm adapter unit relative to the wiper blade adapter unit can be avoided particularly simply in at least one operating state in the longitudinal direction. In this context, a “transverse direction” is to be understood to mean, in particular, a direction which lies perpendicularly with respect to the longitudinal direction and perpendicularly with respect to a vertical direction and runs parallel to a wiping plane. In this context, a “wiping plane” is to be understood to mean, in particular, an idealized plane which is wiped in an operating state by a wiper blade which is fastened to the wiper blade adapter unit. Here, in this context, a “vertical direction” is to be understood to mean, in particular, a direction which lies perpendicularly with respect to the wiping plane. 
         [0008]    If the fastening recess extends in a main extent at least substantially in a vertical direction of the wiper arm adapter unit, the wiper arm adapter unit can be coupled to the wiper blade adapter unit in a particularly simple manner. In this context, a “main extent” is to be understood to mean, in particular, as great an extent as possible. 
         [0009]    If the fastening recess extends in a main extent at least substantially in a longitudinal direction of the wiper blade adapter unit, a movement of the wiper arm adapter unit relative to the wiper blade adapter unit in a vertical direction can be avoided in a particularly simple manner. 
         [0010]    If, furthermore, the wiper device has a locking means which is provided to avoid a movement of the fastening means relative to a main body of the wiper blade adapter unit in at least one operating state, operational security of the wiper device in an operating state can be increased in a particularly advantageous manner. 
         [0011]    If, moreover, the wiper device has a latching means which is provided to avoid a movement of the fastening means relative to a main body of the wiper blade adapter unit in at least one operating state, coupling of the wiper arm adapter unit to the wiper blade adapter unit can take place in a particularly rapid manner. 
         [0012]    If the latching means is configured in one piece with the main body of the wiper blade adapter unit, the wiper device can be produced in a particularly robust and inexpensive manner. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0013]    Further advantages result from the following description of the drawings. Exemplary embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain numerous features in combination. A person skilled in the art will also expediently consider the features individually and combine them to form appropriate further combinations. 
           [0014]    In the drawings: 
           [0015]      FIGS. 1   a  to  1   c  show a perspective view of a wiper device in an assembly sequence, 
           [0016]      FIGS. 2   a  and  2   b  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, 
           [0017]      FIGS. 3   a  and  3   b  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence, and 
           [0018]      FIGS. 4   a  to  4   c  show a perspective view of a further exemplary embodiment of a wiper device in an assembly sequence. 
       
    
    
     DETAILED DESCRIPTION 
       [0019]      FIG. 1   a  shows a wiper device having a wiper arm adapter unit  10   a  and a wiper blade adapter unit  12   a  in an open state. The wiper arm adapter unit  10   a  has a fastening means  18   a  and a bearing plate  30   a  and is connected in one piece to a wiper arm  26   a;  “in one piece” is to be understood to mean, in particular, with a material-to-material connection and/or cast in one piece and/or as a result of the production using a single-component or multiple-component injection molding method. However, it is also conceivable in this context to configure the wiper arm adapter unit  10   a  separately from the wiper arm  26   a  and to connect them to one another via a suitable connecting element. 
         [0020]    The fastening means  18   a  is arranged as a fastening pin  36   a  in a stationary manner on the wiper blade adapter unit  12   a  and extends cylindrically in a main direction of extent substantially parallel to a transverse direction  40   a  of the wiper arm adapter unit  10   a.  The bearing plate  30   a  extends first of all in the transverse direction  40   a  and then bends away counter to a vertical direction  32   a.    
         [0021]    The wiper blade adapter unit  12   a  has a freely movable locking means  14   a  with a substantially u-shaped profile and two substantially c-shaped latching recesses  38   a.    
         [0022]      FIG. 1   b  shows the wiper device in a second assembly step. The bearing plate  30   a  of the wiper arm adapter unit  10   a  lies on a bearing face  28   a  of a main body  22   a  of the wiper blade adapter unit  12   a.  The fastening means  18   a  engages into a fastening recess  20   a,  extending substantially in the vertical direction  32   a,  of the main body  22   a  and forms a positively locking connection with the latter. The main body  22   a  is configured in one piece with a wiper blade  24   a.  However, it is also conceivable in this context to configure the wiper blade adapter unit  12   a  in one piece with the wiper blade  24   a.    
         [0023]    A freedom of movement of the wiper arm adapter unit  10   a  is limited in a longitudinal direction  16   a.  In the transverse direction  40   a,  the freedom of movement of the wiper arm adapter unit  10   a  is limited by the bent-away bearing plate  30   a  and by the wiper arm  26   a  which is connected to the wiper arm adapter unit  10   a.    
         [0024]      FIG. 1  c shows the wiper device in an assembled state. The locking means  14   a  is pushed over the main body  22   a  and engages into the latter, with the result that a movement of the fastening means  18   a  relative to the main body  22   a  in the vertical direction  32   a  is avoided. The fastening recess  20   a  engages around the fastening means  18   a  and forms a latching connection with the latter. As a result, the locking means  14   a  limits the freedom of movement of the wiper arm adapter unit  10   a  in the vertical direction  32   a.    
         [0025]      FIGS. 2 to 4  show three further exemplary embodiments of the invention. The following descriptions are restricted substantially to the differences between the exemplary embodiments, it being possible to make reference to the description of the first exemplary embodiment with regard to components, features and functions which remain the same. In order to distinguish the exemplary embodiments, the letter a in the designations of the exemplary embodiment in  FIG. 1  is replaced by the letters b to d in the designations of the exemplary embodiments of  FIGS. 2 to 4 . Reference can in principle also be made to the drawings and/or the description of the first exemplary embodiment with regard to identically denoted components, in particular in relation to components with the same designations. 
         [0026]      FIG. 2   a  shows a further 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. 
         [0027]    A main body  22   b  of the wiper blade adapter unit  12   b  is configured in one piece with a wiper blade  24   b  and has a locking means  14   b  which has a fastening recess  20   b.  The fastening recess  20   b  extends from the bearing face  28   b  approximately in the shape of a circular segment first of all in a vertical direction  32   b  and then in a longitudinal direction  16   b.  The fastening recess  20   b  has a latching means  34   b  which is configured in one piece with the main body  22   b  of the wiper blade adapter unit  12   b.    
         [0028]      FIG. 2   b  shows the wiper device in an assembled state. A fastening means  18   b  of the wiper arm adapter unit  10   b  is configured as a fastening pin  36   b  and engages into the fastening recess  20   b.  A movement of the fastening means  18   b  relative to the main body  22   b  of the wiper blade adapter unit  12   b  is avoided by way of the latching means  34   b.  A bearing plate  30   b  of the wiper arm adapter unit  10   b  rests on the bearing face  28   b  of the wiper blade adapter unit  12   b.    
         [0029]      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. 
         [0030]    The wiper blade adapter unit  12   c  has a main body  22   c  with a locking means  14   c.  The locking means  14   c  has a fastening recess  20   c  which extends in its main direction of extent in the main body  22   c  substantially parallel to a longitudinal direction  16   c.  During assembly, the wiper arm adapter unit  10   c  is pushed in the longitudinal direction  16   c,  a fastening means  18   c  which is configured as a fastening pin  36   c  engaging into the fastening recess  20   c.    
         [0031]      FIG. 3   b  shows the wiper device in an assembled state. The fastening means  18   c  forms a positively locking connection with the main body  22   c  in the fastening recess  20   c.  A latching means  34   c  which is situated within the fastening recess  20   c  avoids the wiper arm adapter unit  10   c  being pushed back into the open state. 
         [0032]      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  is connected in one piece to a wiper arm  26   d  and has a fastening recess  20   d.    
         [0033]    The wiper blade adapter unit  12   d  has a main body  22   d  with a locking means  14   d.  The locking means  14   d  is formed by a latching means  34   d  which is configured in one piece with the main body  22   d.  The main body  22   d  has, furthermore, a covering flap  42   d  and a fastening means  18   d  which is configured as a fastening pin  36   d.  The wiper arm adapter unit  10   d  bears with an outer end on an inner face of the main body  22   d  of the wiper blade adapter unit  12   d.    
         [0034]      FIG. 4   b  shows the wiper device in a second assembly step. The wiper arm adapter unit  10   d  is rotated about a vertical axis  44   d  which is arranged parallel to a vertical direction  32   d.  The freedom of movement of the outer end of the wiper arm adapter unit  10   d  is therefore limited in the vertical direction  32   d  and in a transverse direction  40   d.    
         [0035]      FIG. 4   c  shows the wiper device in a third assembly step. The wiper arm adapter unit  10   d  is rotated about a transverse axis  46   d  which runs parallel to the transverse direction  40   d.  The fastening recess  20   d  of the wiper arm  26   d  ends flush with the fastening pin  36   d.  As a result, the fastening pin  36   d  avoids a movement of the wiper arm adapter unit  10   d  in a longitudinal direction  16   d.