Abstract:
The invention relates to wiper device, comprising an adapter ( 10   a;    10   b;    10   c;    10   d;    10   e;    10   f;    10   g;    10   h ), which forms a point of articulation to a wiper arm or a wiper blade ( 12   a;    12   e;    12   h ) and has at least one form-closure element ( 16   a,    18   a;    16   b,    18   b;    16   c,    18   c;    16   d,    18   d;    16   e,    18   e;    16   f,    18   f;    16   g,    18   g;    16   h,    18   h ) for translational assembly with an additional adapter ( 14   a;    14   b;    14   c;    14   d;    14   e;    14   f;    14   g;    14   h ) in an axial direction, the at least one form-closure element being provided for the form-closed connection to at least one form-closure element ( 20   a,    22   a;    20   b,    22   b;    20   c,    22   c;    20   d,    22   d;    20   e,    22   e;    20   f,    22   f;    20   g,    22   g;    20   h,    22   h ) of the one additional adapter ( 14   a;    14   b;    14   c;    14   d;    14   e;    14   f;    14   g;    14   h ) in the axial direction. According to the invention, the wiper device has at least one actuating element ( 24   a,    26   a;    24   b,    26   b;    24   c,    26   c;    24   d,    26   d;    24   e,    26   e;    24   f,    26   f;    24   g,    26   g;    24   h,    26   h ), which is designed to be deflected in order to deflect the at least one form-closure element ( 20   a,    22   a;    20   b,    22   b;    20   c,    22   c;    20   d,    22   d;    20   e,    22   e;    20   f,    22   f;    20   g,    22   g;    20   h,    22   h ) during disassembly.

Description:
BACKGROUND OF THE INVENTION 
     A wiper device has already been proposed with an adapter which forms a hinge point to a wiper arm and has at least one form-fit element which is provided for translational mounting in an axial direction with a further adapter and for form-fit connection in the axial direction with at least one form-fit element of the one further adapter. 
     SUMMARY OF THE INVENTION 
     The invention is based on a wiper device with an adapter which has a pivot point to a wiper arm or a wiper blade and has at least one form-fit element which is provided for translational mounting in an axial direction with a further adapter and for form-fit connection in the axial direction with at least one form-fit element of the one further adapter. 
     It is proposed that the wiper device has at least one actuating element which is provided to be deflected manually in order to deflect the at least one form-fit element on dismantling. Thus mounting, and in particular dismantling, is made particularly simple and intuitive for a user. The term “adapter” means in particular a wiper arm adapter or a wiper blade adapter. A “wiper arm adapter” in this context means in particular an adapter which has a contact area to a wiper arm component and is provided to create a coupling region of the wiper arm component for coupling and/or contacting with a wiper blade adapter. Preferably the wiper arm component can be attached to a wiper arm. A “wiper blade adapter” in this context means in particular an adapter which has a contact area to a wiper blade component and is captively connected, at least in an operating state, with a wiper blade component when a wiper blade is in a state dismantled from a wiper arm, and is provided to create a coupling area of the wiper blade component for coupling and/or contacting with a wiper arm adapter. “Translational mounting” here means in particular mounting in which two components, in particular the two adapters, are moved towards each other in a rectilinear motion and are joined together, whereby particularly advantageously the motion is exclusively rectilinear. A “form-fit connection in the axial direction” means in particular that the connection only has a form fit in the axial direction, and the form-fit connection can transmit a force mainly—particularly advantageously, exclusively—in the axial direction. The term “provided” means in particular specially designed and/or equipped. An “actuating element” is in particular an element which is provided for actuation, in particular for pressure actuation, by the user and for this in particular has a special marking and/or shaping. The term “deflect” here means in particular that the form-fit element is bent out of an original state which it assumes without the effect of external forces. 
     Furthermore it is proposed that the at least one actuating element is formed as a manual actuating element and is provided to be deflected manually. Thus the user can deflect the form-fit element particularly easily and intuitively by means of the at least one actuating element. The term “deflect manually” means in particular deflection by the user by hand, without tools. 
     Furthermore it is proposed that the adapter is formed as a wiper arm adapter. Thus the form-fit connection between the adapter formed as the wiper arm adapter and the further adapter can be structured particularly advantageously. 
     It is furthermore proposed that the axial direction runs parallel to a vertical axis. Thus the at least one form-fit element formed as a catch element can be designed particularly advantageously, since extremely low forces have to be transmitted along the vertical axis. The term “vertical axis” in this context means in particular an axis which is arranged perpendicular to a support surface of the wiper blade adapter. The “support surface” in this context is in particular a flat surface on which the wiper arm adapter is placed during a mounting process and/or which is provided to transmit a main contact force of the wiper arm adapter to the wiper blade adapter. A “main contact force” in this connection means in particular a force which presses the wiper blade adapter and/or a wiper blade in the direction of a surface to be wiped, such as in particular a motor vehicle pane. 
     Furthermore it is proposed that the at least one form-fit element is arranged on an outside of the adapter. Thus the at least one form-fit element can be deflected by the user particularly advantageously and easily. 
     The term “outside of the adapter” means in particular an outside which terminates the base body of the adapter towards the outside. 
     Furthermore it is proposed that the form-fit element of the adapter is formed as a catch element which is provided to be deflected during mounting. Thus the adapters can be joined together particularly easily in the axial direction. The term “catch element” in this context means in particular an element which is provided to create an engagement connection and to be deflected elastically on mounting and engage in a form-fit connection under a spring effect, wherein the spring effect can in principle be achieved by a separate spring but the element is preferably formed as a spring-elastic element in order to generate the spring effect. 
     Furthermore it is proposed that the at least one form-fit element formed as a catch element has a deflection direction which is oriented at least substantially in an actuation direction of the at least one actuating element. 
     Thus the form-fit element can be deflected particularly easily by means of the actuating element. The term “deflection direction of the form-fit element” means in particular a direction in which the form-fit element must be deflected in order to release a form-fit connection with the corresponding form-fit element. An “actuation direction” means in particular a direction in which the at least one actuating element is deflected by the user in order to deflect the at least one form-fit element. The term “at least substantially in the actuation direction” in this context means in particular that between the actuation direction and the deflection direction, there is a deviation of less than 22°, preferably less than 30° and particularly preferably less than 10°. 
     It is also proposed that the at least one form-fit element formed as a catch element has a deflection direction which is oriented at least substantially opposite the actuation direction of the at least one actuating element. Thus a force which the user must exert on the actuating element in order to deflect the form-fit element can be set particularly advantageously. The term “oriented at least substantially opposite the actuation direction” means in particular that between the deflection direction and an anti-coaxial of the actuation direction, there is a deviation of less than 22°, preferably less than 30° and particular preferably less than 10°. The term “anti-coaxial of the actuation direction” means in particular a direction which stands at an angle of precisely 180° to the actuation direction. 
     Furthermore it is proposed that the adapter has at least one further form-fit element which is provided for form-fit connection with the further adapter in order to prevent a rotation of the adapters in relation to each other. Thus a force transmission between the adapters can be structured particularly advantageously. 
     Also a system with the wiper device and the further adapter is proposed, wherein the further adapter is formed as a wiper blade adapter. Thus a particularly advantageous and stable connection to a wiper blade can be achieved. 
     Furthermore a system with a wiper device is proposed wherein the further adapter is formed as a spring rail. Thus a particularly compact connection to the wiper blade can be achieved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further advantages arise from the description of the drawings below. The drawings show eight exemplary embodiments of the invention. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will suitably also consider the features individually and combine these into suitable further combinations. 
       The drawings show: 
         FIG. 1  an exploded view of a system according to the invention with a wiper device in a first exemplary embodiment; 
         FIG. 2  a perspective view of the system with the wiper device according to  FIG. 1 ; 
         FIG. 3  a perspective view of the system with the wiper device in a second exemplary embodiment; 
         FIG. 4  a perspective view of the system with the wiper device in a third exemplary embodiment; 
         FIG. 5  a perspective view of the system with the wiper device in a fourth exemplary embodiment; 
         FIG. 6  a perspective view of the system with the wiper device in a fifth exemplary embodiment; 
         FIG. 7  a perspective view of the system with the wiper device in a sixth exemplary embodiment; 
         FIG. 8  a perspective view of the system with the wiper device in a seventh exemplary embodiment; 
         FIG. 9  a perspective view of the system with the wiper device in an eighth exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  and  FIG. 2  show a system according to the invention with a wiper device of a motor vehicle in a first exemplary embodiment. The wiper device has an adapter  10   a  which has a pivot point (not shown in more detail) to a wiper arm. The adapter  10   a  which has the pivot point to the wiper arm is formed as a wiper arm adapter. The adapter  10   a  formed as the wiper arm adapter must be changed depending on the design of the wiper arm. Embodiments of said pivot point of adapter  10   a  are generally known to the person skilled in the art and are not shown for reasons of clarity. 
     Furthermore the system comprises a further adapter  14   a  and a wiper arm blade  12   a . The further adapter  14   a  has a pivot point  34   a  for the wiper blade  12   a . The further adapter  14   a  which has the pivot point for the wiper blade  12   a  is formed as a wiper blade adapter. The adapter  10   a , formed as the wiper arm adapter, is formed detachably from the further adapter  14   a , formed as the wiper blade arm adapter, and therefore exchangeably. 
     The further adapter  14   a  formed as a wiper blade adapter has a base body  36   a . Furthermore the base body  36   a  is formed from a plastic injection molding. In this context it is also conceivable to form the base body  36   a  from a metal part, such as in particular a metal sheet, or another material which appears suitable to the person skilled in the art. The base body  36   a  has a flat support surface  38   a . During a mounting process, the support surface  38   a  serves as a support for the adapter  10   a  formed as the wiper arm adapter. The adapter  10   a  is placed on the support surface  38   a  during the mounting process. A vertical axis  28   a  is arranged perpendicular to the support surface  38   a  of the adapter  14   a  formed as the wiper blade adapter. The vertical axis  28   a  is also arranged parallel to a main contact force  40   a  of the adapter  10   a  formed as the wiper arm adapter. The main contact force  40   a  is generated by a torque acting on the wiper arm, and presses the further adapter  14   a  formed as a wiper blade adapter, and the wiper blade  12   a  which is connected hingelessly to the further adapter  14   a , in the direction of a motor vehicle pane to be wiped (not shown in more detail). A horizontal axis is arranged parallel to the main extension direction of the wiper blade  12   a.    
     The adapter  10   a  is provided for translational mounting in an axial direction with the further adapter  14   a . The axial direction runs parallel to the vertical axis  28   a . The adapter  10   a  has base body  42   a  which comprises a form-fit element  16   a ,  18   a  on each of two opposing sides. The two form-fit elements  16   a ,  18   a  are provided for form-fit connection of the adapter  10   a  in the axial direction. The form-fit elements  16   a ,  18   a  are arranged on an outside  44   a ,  46   a  of the adapter  10   a  and delimit the adapter  10   a  at an end of the adapter  10   a  oriented orthogonal to the horizontal axis. The form-fit elements  16   a ,  18   a  are formed integrally with the base body  42   a  of the adapter  10 . The form-fit elements  16   a ,  18   a  are connected to the base body  42   a  in an outer region of the adapter  10   a  facing away from the further adapter  14   a  in mounted state. The form-fit elements  16   a ,  18   a  of the adapter  10   a  are formed as catch elements. They are deflected in a deflection direction on assembly with the further adapter  14   a . The deflection direction is here oriented at least substantially parallel to the horizontal axis. The form-fit elements  16   a ,  18   a  formed as catch elements are oblong and have a hook form  48   a ,  50   a  on their side facing the further adapter  14   a  in mounted state. The hook forms  48   a ,  50   a  are here directed outward i.e. away from the centre plane of the adapter  10   a . On their underside, the hook forms  48   a ,  50   a  each form a deflection chamfer  52   a ,  54   a  which is provided to deflect the corresponding form-fit element  16   a ,  18   a  by contact with the further adapter  14   a  during the mounting process. The deflection chamfers  52   a ,  54   a  are also directed away from the centre plane of the adapter so that the form-fit elements  16   a ,  18   a  can be deflected inwards by means of the deflection chamfers  52   a ,  54   a  during mounting, in the direction of the centre plane of the adapter  10   a.    
     The wiper device comprises two actuating elements  24   a ,  26   a  which are provided to deflect the form-fit elements  16   a ,  18   a  of the adapter  10   a  on dismantling. Here the actuating elements  24   a ,  26   a  are formed as manual actuating elements and are provided to be deflected manually by a user. The actuating elements  24   a ,  26   a  are formed as protrusions on an outside of the form-fit elements  16   a ,  18   a  facing away from the base body  42   a  of the adapter  10   a . The actuating elements  24   a ,  26   a  are here formed integrally with the form-fit elements  16   a ,  18   a . The actuating elements  24   a ,  26   a  are made of the same material as the form-fit elements  16   a ,  18   a . In principle however it is also conceivable that the actuating elements  24   a ,  26   a  are made from another material, such as for example a rubber-like material or another material appearing suitable to the person skilled in the art. Here it is conceivable that the actuating elements  24   a ,  26   a  are attached to the form-fit elements  16   a ,  18   a  for example by an adhesive joint or another connecting method appearing suitable to the person skilled in the art. To identify the actuating elements  24   a ,  26   a  as actuating elements which can be actuated by the user, the actuating elements can have a specific shape or color which identifies these as such. For this the actuating elements  24   a ,  26   a  can for example have a marking which is formed by a signal color, or another feature appearing suitable to the person skilled in the art. 
     On dismantling, the form-fit elements  16   a ,  18   a  are deflected by means of the actuating elements  24   a ,  26   a . A user, for example by his hand, exerts a deflection force on the form-fit elements  16   a ,  18   a  of the adapter  10  via the actuating elements  24   a ,  26   a . The deflection direction of the form-fit elements  16 ,  18   a  is here oriented at least substantially in an actuation direction of the corresponding actuating elements  24   a ,  26   a . Both the actuating elements  24   a ,  26   a  and the form-fit elements  16   a ,  18   a  of the adapter  10   a  formed as the wiper arm adapter are deflected in the direction of a centre plane of the adapter  10   a . In principle however it is also conceivable that the actuating elements  24   a ,  26   a  are deflected by a tool provided for this, for example pliers or another tool appearing suitable to the person skilled in the art. 
     To prevent a rotation of the adapters  10   a ,  14   a  in relation to each other, the adapter  10   a  has two further form-fit elements  30   a ,  32   a . The further form-fit elements  30   a ,  32   a  are provided to transmit a substantial part of a wiping force. For this the further form-fit elements  30   a ,  32   a  are formed as protrusions. The form-fit elements  30   a ,  32   a  have an oval base form, whereby a wiping force of the wiper arm can be transmitted particularly well by the adapters  10   a ,  14   a . The form-fit elements formed as protrusions  30   a ,  32   a  are arranged on a lower contact face  56   a  of the adapter  10   a . One of the form-fit elements  30   a ,  32   a  is arranged along the horizontal axis in an outer region of the adapter  10   a . The form-fit elements  30   a ,  32   a  each have the same distance from the centre plane of the adapter  10   a . A form fit which can be created via the form-fit elements  30   a ,  32   a  is open in one direction along the vertical axis  28   a . In this direction the adapters  10   a ,  14   a  are also separated from each other. The form-fit elements  16   a ,  18   a  connect the adapters  10   a ,  14   a  captively together and thus also hold in form fit and fix the form-fit elements  30   a ,  32   a  which are provided for substantial transmission of the wiper force. 
     To link the form-fit elements  16   a ,  18   a  formed as catch elements, the adapter  14   a  formed as a wiper blade adapter has two form-fit elements  20   a ,  22   a  corresponding to the form-fit elements  16   a ,  18   a . The form-fit elements  20   a ,  22   a  of the further adapter  14   a  are formed corresponding to the form-fit elements  16   a ,  18   a  of the adapter  10   a  and provided for form fit therewith. The form-fit elements  20   a ,  22   a  are formed as recesses let into the base body  36   a  of the adapter  14   a . Each of the form-fit elements  20   a ,  22   a  of the adapter  14   a  has an undercut  62   a ,  64   a . In mounted state, the form-fit element  16   a ,  18   a  of the adapter  10   a  formed correspondingly as a catch element engages in the respective undercut  62   a ,  64   a . In mounted state, the form-fit elements  20   a ,  22   a , formed as recesses, with their undercuts  62   a ,  64   a  each create a form-fit connection acting in the axial direction with the corresponding form-fit element  16   a ,  18   a , formed as a catch element, of the adapter  10   a.    
     The further adapter  14   a  has two further form-fit elements  66   a ,  68   a  for coupling with the further form-fit elements  30   a ,  32   a  of the adapter  10   a . The form-fit elements  66   a ,  68   a  are formed corresponding to the further form-fit elements  30   a ,  32   a  of the adapter  10   a . The form-fit elements  66   a ,  68   a  are formed as recesses which have an oval base shape. The form-fit elements  66   a ,  68   a  formed as recesses are let into the support surface  56   a  of the base body  42   a . In mounted state, the form-fit elements  30   a ,  32   a , formed as protrusions, of the adapter  10   a  formed as a wiper arm adapter are arranged in the form-fit elements  66   a ,  68   a , formed as recesses, of the adapter  14   a  formed as the wiper blade adapter. 
     In principle here it is also conceivable that the further form-fit elements  30   a ,  32   a  of the adapter  10   a  formed as the wiper arm adapter are formed as recesses, and the form-fit elements  66   a ,  68   a  of the adapter  14   a  formed as the wiper blade adapter are formed as protrusions. In principle it is also conceivable that form-fit elements  30   a ,  32   a ,  66   a ,  68   a  of an adapter  10   a ,  14   a  are formed both as protrusions and recesses. 
     The system furthermore comprises a spoiler element  70   a  and a carrier element  72   a . The spoiler element  70   a , carrier element  72   a  and wiper blade  12   a  are arranged on the wiper device. The spoiler element  70   a  has two symmetrically formed, concave spoiler surfaces  74   a  which deflect travel wind occurring in the operating state and hence increase the main contact force  40   a . Also the spoiler element  70   a  is formed of two pieces, i.e. from two separate components. The carrier element  72   a  also comprises two spring rails  76   a . In this context however it is also conceivable to use a one-piece spring rail as a carrier element  72   a . During mounting, the carrier element  72   a  is pushed into a longitudinal guide rail of the spoiler element  70   a . The wiper blade  12   a  is thus held on both sides by the spring rail  76   a . For this the wiper blade  12   a  on each side has a receiver groove  78   a  for the carrier element  72   a . Two end caps  80   a ,  82   a  terminate the carrier element  72   a  at each end in the longitudinal direction of the wiper blade  12   a  and prevent detachment of the spring rail  76   a  from the receiver groove  78   a . The wiper blade  12   a  in mounted state is thus connected to the spoiler element  70   a  by the carrier element  72   a.    
     The carrier element  72   a  has four fixing lugs  84   a ,  86   a . In each case two fixing lugs  84   a  point in a direction which runs opposite a direction of the other two fixing lugs  86   a . The base body  36   a  of the further adapter  14   a  formed as the wiper blade adapter has four fixing recesses  88   a  which correspond in shape to the fixing lugs  84   a ,  86   a . To assemble the further adapter  14   a  formed as a wiper blade adapter with the carrier element, the fixing lugs  84   a ,  86   a  are introduced in the fixing recesses  88   a . Furthermore many other fixing methods which appear suitable to the person skilled in the art are conceivable for fixing the carrier element  72   a  to the further adapter  14   a  formed as the wiper blade adapter, such as in particular suspending a carrier element in a guide rail of the further adapter  14   a  formed as the wiper blade adapter. Furthermore the base body  36   a  could be surrounded by a carrier element. Furthermore it is also conceivable to glue, screw and/or rivet the carrier element  72   a  to the base body  36   a . If the base body  36   a  of the adapter  14   a  formed as the wiper blade adapter is made from a metal part, a carrier element can also be attached by welding or soldering. 
     In principle it is also conceivable that the form-fit elements  16   a ,  18   a  formed as catch elements are formed by the further adapter  14   a  formed as the wiper blade adapter, and that the form-fit elements  20   a ,  22   a  formed as recesses are formed by the adapter  10   a  formed as the wiper arm adapter. 
       FIGS. 3 to 9  show further exemplary embodiments of the invention. The descriptions and drawings below are substantially restricted to the differences between the exemplary embodiments, wherein in relation to components with the same designation, in particular in relation to components with the same reference numerals, in principle reference can be made to the drawings and/or the description of the other exemplary embodiments, in particular of  FIGS. 1 and 2 . To distinguish the exemplary embodiments, the letter a is added after the reference numeral of the exemplary embodiment in  FIGS. 1 and 2 . In the exemplary embodiments of  FIGS. 3 to 9 , the letter a is replaced by the letters b to h. 
       FIG. 3  shows a system according to the invention with a wiper device and a further adapter  14   b  in the second exemplary embodiment. The wiper device comprises an adapter  10   b  which has a pivot point (not shown in more detail) to a wiper arm. The design of form-fit elements  16   b ,  18   b ,  20   b ,  22   b  of the adapter  10   b  and the further adapter  14   b  which are provided for form-fit connection in an axial direction, and of actuating elements  24   b ,  26   b , is identical to those of the previous exemplary embodiment in  FIGS. 1 and 2 . 
     Only the design of the further form-fit elements of adapters  10   b ,  14   b , which are provided to prevent a rotation of the adapters  10   b ,  14   b  in relation to each other, differs from the previous exemplary embodiment. The adapter  10   b  formed as the wiper arm adapter has only one form-fit element  30   b  formed as a protrusion. The form-fit element  30   b  formed as a protrusion has an oval base shape. The form-fit element  30   b  extends over a large part of the lower contact surface  56   b  of the one base body  42   b  of the adapter  10   b . A form-fit element  32   b  is here arranged symmetrically to a centre plane of the adapter. The further adapter  14   b  has a further form-fit element  66   b  corresponding to the further form-fit element  32   b . The further form-fit element  66   b  of the adapter  14   b  is formed as a recess and has an oval base shape like that of the form-fit element  32   b  of the adapter  10   b.    
       FIG. 4  shows a system according to the invention with a wiper device and a further adapter  14   c  in the third exemplary embodiment. The wiper device comprises an adapter  10   c  which has a pivot point (not shown in more detail) to a wiper arm. The design of form-fit elements  16   c ,  18   c ,  20   c ,  22   c  of the adapter  10   c  and the further adapter  14   c  which are provided for form-fit connection in an axial direction, and of actuating elements  24   c ,  26   c , is identical to those of the first exemplary embodiment in  FIGS. 1 and 2 . In the same way as the second exemplary embodiment from  FIG. 3 , the adapter  10   c  has only one further form-fit element  32   c . In contrast to the previous exemplary embodiment, this form-fit element  32   c  has a rectangular base shape. Furthermore here the form-fit element  32   c  of the adapter  10   c  formed as the wiper arm adapter is formed as a recess. A corresponding form-fit element  66   c  of the adapter  14   c  formed as a wiper blade adapter is formed as a protrusion. 
       FIG. 5  shows a system according to the invention with a wiper device and a further adapter  14   d  in a fourth exemplary embodiment. The wiper device comprises an adapter  10   d  which has a pivot point (not shown in more detail) to a wiper arm. The adapter  10   d  formed as a wiper arm adapter has a base body  42   d  which comprises a form-fit element  16   d ,  18   d  on two opposing sides. The two form-fit elements  16   d ,  18   d  are provided for form-fit connection of the adapter  10   d  in an axial direction. The form-fit elements  16   d ,  18   d  are formed integrally with the base body  42   d  of the adapter  10   d . The form-fit elements  16   d ,  18   d  each have a hinge point  90   d ,  92   d  via which they are connected to the base body  42   d  of the adapter  10   d . The hinge points  90   d ,  92   d  each form a connection between the corresponding form-fit elements  16   d ,  18   d  and the base body  42   d  of the adapter  10   d . The hinge point  90   d ,  92   d  fixes the form-fit elements  16   d ,  18   d  spaced from the outer wall  94   d ,  96   d  of the base body  42   d  of the adapter  10   d . Thus the form-fit elements  16   d ,  18   d  can be moved and deflected relative to the base body  42   d  of the adapter  10   d  via the hinge point  90   d ,  92   d . The hinge points  90   d ,  92   d  are arranged approximately in the middle of the adapter  10   d  in the axial direction. The form-fit elements  16   d ,  18   d  protrude in the axial direction on both sides beyond the corresponding hinge point  90   d ,  92   d . Via the hinge point  90   d ,  92   d , a region of the corresponding form-fit element  16   d ,  18   d  arranged axially above the hinge point  90   d ,  92   d  is deflected in an opposite direction to a region of the corresponding form-fit element  16   d ,  18   d  arranged axially below the hinge point  90   d ,  92   d.    
     The form-fit elements  16   d ,  18   d  formed as catch elements have a hook form  48   d ,  50   d  on their side facing the further adapter  14   d  in mounted state. The hook form  48   d ,  50   d  is here directed inward i.e. in the direction of a centre plane of the adapter  10   d . On their underside, each hook form  48   d ,  50   d  forms a deflection chamfer  52   d ,  54   d  which is provided to deflect the corresponding form-fit element  16   d ,  18   d  by contact with the further adapter  14   d  during the mounting process. The deflection chamfers  52   d ,  54   d  are also oriented in the direction of the centre plane of the adapter  10   d , so that during mounting, the form-fit elements  16   d ,  18   d  are deflected outward by means of the deflection chamfers  52   d ,  54   d , away from the centre plane of the adapter  10   d . A deflection direction of the form-fit elements  16   d ,  18   d  formed as catch elements is oriented outward, away from the centre plane of the adapter  10   d.    
     The wiper device comprises two actuating elements  24   d ,  26   d  which are provided to be deflected manually in order to deflect the form-fit elements  16   d ,  18   d  of the adapter  10   d  on dismantling. The actuating elements  24   d ,  26   d  are formed as protrusions on an outside of the form-fit elements  16   d ,  18   d . The actuating elements  24   d ,  26   d  are formed integrally with the form-fit elements  16   d ,  18   d . The actuating elements  24   d ,  26   d  are each arranged in a region of the corresponding form-fit elements  16   d ,  18   d  facing away from the further adapter  14   d  in mounted state, above the corresponding hinge point  90   d ,  92   d . An actuation direction in which the user actuates the actuating elements  24   d ,  26   d  manually is oriented in the direction of the centre plane of the adapter  10   d.    
     On dismantling, the form-fit elements  16   d ,  18   d  are deflected by means of the actuating elements  24   d ,  26   d . A user here, for example by his hand, exerts a deflection force on the form-fit elements of the adapter  10   d  via the actuating elements  24   d ,  26   d . The deflection direction of the form-fit elements  16   d ,  18   d  is oriented at least substantially opposite the actuation direction of the corresponding actuating element  24   d ,  26   d.    
     The further adapter  14   d  is formed substantially the same as in the former exemplary embodiments. Only the form-fit elements  20   d ,  22   d  which are provided for form-fit connection with the form-fit elements  16   d ,  18   d , formed as catch elements, are adapted to the reversed shape of the hook forms  48   d ,  50   d  of the form-fit elements  16   d ,  18   d  of the adapter  10   d , and have their undercut  62   d ,  64   d  on a side of the corresponding form-fit element  20   d ,  22   d  facing the centre plane of the adapter  10   d.    
       FIG. 6  shows a system according to the invention with a wiper device and a further adapter  14   e  in a fifth exemplary embodiment. The wiper device comprises an adapter  10   e  which has a pivot point (not shown in more detail) to a wiper arm. The design of the form-fit elements  16   e ,  18   e  of the adapter  10   e  and the actuating elements  24   e ,  26   e  is identical to that of the previous exemplary embodiment from  FIG. 5 . In contrast to the previous exemplary embodiment, the further adapter  14   e  is made from a curved metal sheet. The further adapter  14   e  is here permanently connected to a spring rail  76   e  of the system, for example by means of a welding process or in another manner appearing suitable to the person skilled in the art. Here the spring rail  76   e  formed as a carrier element  72   e  is formed as an unslotted spring rail. Two form-fit elements  20   e ,  22   e  of the further adapter  14   e  formed corresponding to the form-fit elements  16   e ,  18   e  of adapter  10   e , formed as catch elements, are formed such that the adapter  14   e  made from the curved metal sheet has a shoulder, which is bent in the direction of the adapter  10   e , on its ends standing orthogonal to the horizontal axis. The form-fit elements  16   e ,  18   e  formed as catch elements can engage under these shoulders for form fit with the corresponding form-fit elements  22   e ,  24   e  of the further adapter  14   e.    
       FIG. 7  shows a system according to the invention with a wiper device and a further adapter  14   f  in a sixth exemplary embodiment. The wiper device comprises an adapter  10   f  which has a pivot point (not shown in more detail) to a wiper arm. A design of form-fit elements  16   f ,  18   f ,  20   f ,  22   f  of the adapter  10   f  and further adapter  14   f , which are provided for form-fit connection in an axial direction, and of actuating elements  24   f ,  26   f , is identical to that of the first exemplary embodiment from  FIG. 1 . In contrast, the further adapter  14   d  for connection with an unslotted spring rail  76   f  has two protrusions  98   f ,  100   f  on its side facing away from the adapter  10   f  in mounted state, by means of which protrusions the further adapter  14   f  is inseparably connected to the spring rail  76   f  via a hot stamping process. For this the spring rail  76   f  has two receivers  102   f ,  104   f  in which the protrusions  98   f ,  100   f  of the further adapter  14   f  are introduced in order to connect the adapter  14   f  to the spring rail  76   f.    
       FIG. 8  shows a system according to the invention with a wiper device and a further adapter  14   g  in a seventh exemplary embodiment. The wiper device comprises an adapter  10   g  which has a pivot point (not shown in more detail) to a wiper arm. A design of form-fit elements  16   g ,  18   g  and further form-fit elements  30   g ,  32   g  of adapter  10   g , and of actuating elements  24   g ,  26   g , is identical to that of the first exemplary embodiment from  FIG. 1 . In contrast, the further adapter  14   g  is formed as a spring rail  76   g . The spring rail  76   g  formed as the further adapter  14   g  is formed as an unslotted spring rail. Form-fit elements  20   g ,  22   g  and further form-fit elements  66   g ,  68   g  corresponding to form-fit elements  16   f ,  18   g ,  30   g ,  32   g  of adapter  10   g  are produced as recesses in the unslotted spring rail  76   g . In contrast to the former exemplary embodiment however, here the form-fit elements  16   g ,  18   g  of the adapter  10   g  formed as catch elements are designed more massive, i.e. for example with thicker walls, since in this exemplary embodiment they must transmit greater forces because the further form-fit elements  30   g ,  32   g ,  66   g ,  68   g  of the adapters  10   g ,  14   g  can transmit smaller forces due to the low height provided by the rail  76   g  for force transmission. 
       FIG. 9  shows a system according to the invention with a wiper device and a further adapter  14   h  in an eighth exemplary embodiment. The wiper device comprises an adapter  10   h  which has a pivot point (not shown in more detail) to a wiper arm. The further adapter  14   h , as in the previous exemplary embodiment from  FIG. 8 , is formed as a spring rail  76   h . The adapter  10  has two form-fit elements  16   h ,  18   h  formed as catch elements. In contrast to the previous embodiment, the form-fit elements  16   h ,  18   h  of the adapter  10   h  are arranged on ends of the adapter  10   h  running parallel to the horizontal axis. The form-fit elements  16   h ,  18   h  are oriented parallel to the horizontal axis. A deflection direction of the form-fit elements  16   h ,  18   h  here stands perpendicular to the horizontal axis. A fundamental design of the form-fit elements  16   h ,  18   h  formed as catch elements is substantially identical to the design of the corresponding form-fit elements formed as catch elements from the fourth exemplary embodiment from  FIG. 5  or from the seventh exemplary embodiment from  FIG. 8 . 
     Further form-fit elements  30   h  of adapter  10   h  formed as protrusions are in principle designed in the same way as in the first exemplary embodiment from  FIG. 1 . In mounted state they engage in corresponding further form-fit elements  66   h  which are produced as recesses in the adapter  14   h  formed as a spring rail  76   h . For form-fit connection in an axial direction, the form-fit elements  16   h ,  18   h  formed as catch elements engage in the spring rail  76   h . The form-fit elements  16   h ,  18   h  with their hook forms  48   h ,  50   h  engage laterally below the spring rail  76   h , orthogonal to the horizontal axis, and thus form a form-fit connection in the axial direction. 
     In principle it is conceivable that the various designs, described in the exemplary embodiments, of the form-fit elements formed as catch elements, the form-fit elements formed as recesses, the further form-fit elements formed as protrusions and/or the connections of the further adapter on a carrier element or spring rail, can be combined in various ways appearing suitable to the person skilled in the art.