Wiper device

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.

DETAILED DESCRIPTION

FIG. 1andFIG. 2show a system according to the invention with a wiper device of a motor vehicle in a first exemplary embodiment. The wiper device has an adapter10awhich has a pivot point (not shown in more detail) to a wiper arm. The adapter10awhich has the pivot point to the wiper arm is formed as a wiper arm adapter. The adapter10aformed as the wiper arm adapter must be changed depending on the design of the wiper arm. Embodiments of said pivot point of adapter10aare generally known to the person skilled in the art and are not shown for reasons of clarity.

Furthermore the system comprises a further adapter14aand a wiper arm blade12a. The further adapter14ahas a pivot point34afor the wiper blade12a. The further adapter14awhich has the pivot point for the wiper blade12ais formed as a wiper blade adapter. The adapter10a, formed as the wiper arm adapter, is formed detachably from the further adapter14a, formed as the wiper blade arm adapter, and therefore exchangeably.

The further adapter14aformed as a wiper blade adapter has a base body36a. Furthermore the base body36ais formed from a plastic injection molding. In this context it is also conceivable to form the base body36afrom 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 body36ahas a flat support surface38a. During a mounting process, the support surface38aserves as a support for the adapter10aformed as the wiper arm adapter. The adapter10ais placed on the support surface38aduring the mounting process. A vertical axis28ais arranged perpendicular to the support surface38aof the adapter14aformed as the wiper blade adapter. The vertical axis28ais also arranged parallel to a main contact force40aof the adapter10aformed as the wiper arm adapter. The main contact force40ais generated by a torque acting on the wiper arm, and presses the further adapter14aformed as a wiper blade adapter, and the wiper blade12awhich is connected hingelessly to the further adapter14a, 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 blade12a.

The adapter10ais provided for translational mounting in an axial direction with the further adapter14a. The axial direction runs parallel to the vertical axis28a. The adapter10ahas base body42awhich comprises a form-fit element16a,18aon each of two opposing sides. The two form-fit elements16a,18aare provided for form-fit connection of the adapter10ain the axial direction. The form-fit elements16a,18aare arranged on an outside44a,46aof the adapter10aand delimit the adapter10aat an end of the adapter10aoriented orthogonal to the horizontal axis. The form-fit elements16a,18aare formed integrally with the base body42aof the adapter10. The form-fit elements16a,18aare connected to the base body42ain an outer region of the adapter10afacing away from the further adapter14ain mounted state. The form-fit elements16a,18aof the adapter10aare formed as catch elements. They are deflected in a deflection direction on assembly with the further adapter14a. The deflection direction is here oriented at least substantially parallel to the horizontal axis. The form-fit elements16a,18aformed as catch elements are oblong and have a hook form48a,50aon their side facing the further adapter14ain mounted state. The hook forms48a,50aare here directed outward i.e. away from the centre plane of the adapter10a. On their underside, the hook forms48a,50aeach form a deflection chamfer52a,54awhich is provided to deflect the corresponding form-fit element16a,18aby contact with the further adapter14aduring the mounting process. The deflection chamfers52a,54aare also directed away from the centre plane of the adapter so that the form-fit elements16a,18acan be deflected inwards by means of the deflection chamfers52a,54aduring mounting, in the direction of the centre plane of the adapter10a.

The wiper device comprises two actuating elements24a,26awhich are provided to deflect the form-fit elements16a,18aof the adapter10aon dismantling. Here the actuating elements24a,26aare formed as manual actuating elements and are provided to be deflected manually by a user. The actuating elements24a,26aare formed as protrusions on an outside of the form-fit elements16a,18afacing away from the base body42aof the adapter10a. The actuating elements24a,26aare here formed integrally with the form-fit elements16a,18a. The actuating elements24a,26aare made of the same material as the form-fit elements16a,18a. In principle however it is also conceivable that the actuating elements24a,26aare 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 elements24a,26aare attached to the form-fit elements16a,18afor example by an adhesive joint or another connecting method appearing suitable to the person skilled in the art. To identify the actuating elements24a,26aas 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 elements24a,26acan 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 elements16a,18aare deflected by means of the actuating elements24a,26a. A user, for example by his hand, exerts a deflection force on the form-fit elements16a,18aof the adapter10via the actuating elements24a,26a. The deflection direction of the form-fit elements16,18ais here oriented at least substantially in an actuation direction of the corresponding actuating elements24a,26a. Both the actuating elements24a,26aand the form-fit elements16a,18aof the adapter10aformed as the wiper arm adapter are deflected in the direction of a centre plane of the adapter10a. In principle however it is also conceivable that the actuating elements24a,26aare 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 adapters10a,14ain relation to each other, the adapter10ahas two further form-fit elements30a,32a. The further form-fit elements30a,32aare provided to transmit a substantial part of a wiping force. For this the further form-fit elements30a,32aare formed as protrusions. The form-fit elements30a,32ahave an oval base form, whereby a wiping force of the wiper arm can be transmitted particularly well by the adapters10a,14a. The form-fit elements formed as protrusions30a,32aare arranged on a lower contact face56aof the adapter10a. One of the form-fit elements30a,32ais arranged along the horizontal axis in an outer region of the adapter10a. The form-fit elements30a,32aeach have the same distance from the centre plane of the adapter10a. A form fit which can be created via the form-fit elements30a,32ais open in one direction along the vertical axis28a. In this direction the adapters10a,14aare also separated from each other. The form-fit elements16a,18aconnect the adapters10a,14acaptively together and thus also hold in form fit and fix the form-fit elements30a,32awhich are provided for substantial transmission of the wiper force.

To link the form-fit elements16a,18aformed as catch elements, the adapter14aformed as a wiper blade adapter has two form-fit elements20a,22acorresponding to the form-fit elements16a,18a. The form-fit elements20a,22aof the further adapter14aare formed corresponding to the form-fit elements16a,18aof the adapter10aand provided for form fit therewith. The form-fit elements20a,22aare formed as recesses let into the base body36aof the adapter14a. Each of the form-fit elements20a,22aof the adapter14ahas an undercut62a,64a. In mounted state, the form-fit element16a,18aof the adapter10aformed correspondingly as a catch element engages in the respective undercut62a,64a. In mounted state, the form-fit elements20a,22a, formed as recesses, with their undercuts62a,64aeach create a form-fit connection acting in the axial direction with the corresponding form-fit element16a,18a, formed as a catch element, of the adapter10a.

The further adapter14ahas two further form-fit elements66a,68afor coupling with the further form-fit elements30a,32aof the adapter10a. The form-fit elements66a,68aare formed corresponding to the further form-fit elements30a,32aof the adapter10a. The form-fit elements66a,68aare formed as recesses which have an oval base shape. The form-fit elements66a,68aformed as recesses are let into the support surface56aof the base body42a. In mounted state, the form-fit elements30a,32a, formed as protrusions, of the adapter10aformed as a wiper arm adapter are arranged in the form-fit elements66a,68a, formed as recesses, of the adapter14aformed as the wiper blade adapter.

In principle here it is also conceivable that the further form-fit elements30a,32aof the adapter10aformed as the wiper arm adapter are formed as recesses, and the form-fit elements66a,68aof the adapter14aformed as the wiper blade adapter are formed as protrusions. In principle it is also conceivable that form-fit elements30a,32a,66a,68aof an adapter10a,14aare formed both as protrusions and recesses.

The system furthermore comprises a spoiler element70aand a carrier element72a. The spoiler element70a, carrier element72aand wiper blade12aare arranged on the wiper device. The spoiler element70ahas two symmetrically formed, concave spoiler surfaces74awhich deflect travel wind occurring in the operating state and hence increase the main contact force40a. Also the spoiler element70ais formed of two pieces, i.e. from two separate components. The carrier element72aalso comprises two spring rails76a. In this context however it is also conceivable to use a one-piece spring rail as a carrier element72a. During mounting, the carrier element72ais pushed into a longitudinal guide rail of the spoiler element70a. The wiper blade12ais thus held on both sides by the spring rail76a. For this the wiper blade12aon each side has a receiver groove78afor the carrier element72a. Two end caps80a,82aterminate the carrier element72aat each end in the longitudinal direction of the wiper blade12aand prevent detachment of the spring rail76afrom the receiver groove78a. The wiper blade12ain mounted state is thus connected to the spoiler element70aby the carrier element72a.

The carrier element72ahas four fixing lugs84a,86a. In each case two fixing lugs84apoint in a direction which runs opposite a direction of the other two fixing lugs86a. The base body36aof the further adapter14aformed as the wiper blade adapter has four fixing recesses88awhich correspond in shape to the fixing lugs84a,86a. To assemble the further adapter14aformed as a wiper blade adapter with the carrier element, the fixing lugs84a,86aare introduced in the fixing recesses88a. Furthermore many other fixing methods which appear suitable to the person skilled in the art are conceivable for fixing the carrier element72ato the further adapter14aformed as the wiper blade adapter, such as in particular suspending a carrier element in a guide rail of the further adapter14aformed as the wiper blade adapter. Furthermore the base body36acould be surrounded by a carrier element. Furthermore it is also conceivable to glue, screw and/or rivet the carrier element72ato the base body36a. If the base body36aof the adapter14aformed 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 elements16a,18aformed as catch elements are formed by the further adapter14aformed as the wiper blade adapter, and that the form-fit elements20a,22aformed as recesses are formed by the adapter10aformed as the wiper arm adapter.

FIGS. 3 to 9show 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 ofFIGS. 1 and 2. To distinguish the exemplary embodiments, the letter a is added after the reference numeral of the exemplary embodiment inFIGS. 1 and 2. In the exemplary embodiments ofFIGS. 3 to 9, the letter a is replaced by the letters b to h.

FIG. 3shows a system according to the invention with a wiper device and a further adapter14bin the second exemplary embodiment. The wiper device comprises an adapter10bwhich has a pivot point (not shown in more detail) to a wiper arm. The design of form-fit elements16b,18b,20b,22bof the adapter10band the further adapter14bwhich are provided for form-fit connection in an axial direction, and of actuating elements24b,26b, is identical to those of the previous exemplary embodiment inFIGS. 1 and 2.

Only the design of the further form-fit elements of adapters10b,14b, which are provided to prevent a rotation of the adapters10b,14bin relation to each other, differs from the previous exemplary embodiment. The adapter10bformed as the wiper arm adapter has only one form-fit element30bformed as a protrusion. The form-fit element30bformed as a protrusion has an oval base shape. The form-fit element30bextends over a large part of the lower contact surface56bof the one base body42bof the adapter10b. A form-fit element32bis here arranged symmetrically to a centre plane of the adapter. The further adapter14bhas a further form-fit element66bcorresponding to the further form-fit element32b. The further form-fit element66bof the adapter14bis formed as a recess and has an oval base shape like that of the form-fit element32bof the adapter10b.

FIG. 4shows a system according to the invention with a wiper device and a further adapter14cin the third exemplary embodiment. The wiper device comprises an adapter10cwhich has a pivot point (not shown in more detail) to a wiper arm. The design of form-fit elements16c,18c,20c,22cof the adapter10cand the further adapter14cwhich are provided for form-fit connection in an axial direction, and of actuating elements24c,26c, is identical to those of the first exemplary embodiment inFIGS. 1 and 2. In the same way as the second exemplary embodiment fromFIG. 3, the adapter10chas only one further form-fit element32c. In contrast to the previous exemplary embodiment, this form-fit element32chas a rectangular base shape. Furthermore here the form-fit element32cof the adapter10cformed as the wiper arm adapter is formed as a recess. A corresponding form-fit element66cof the adapter14cformed as a wiper blade adapter is formed as a protrusion.

FIG. 5shows a system according to the invention with a wiper device and a further adapter14din a fourth exemplary embodiment. The wiper device comprises an adapter10dwhich has a pivot point (not shown in more detail) to a wiper arm. The adapter10dformed as a wiper arm adapter has a base body42dwhich comprises a form-fit element16d,18don two opposing sides. The two form-fit elements16d,18dare provided for form-fit connection of the adapter10din an axial direction. The form-fit elements16d,18dare formed integrally with the base body42dof the adapter10d. The form-fit elements16d,18deach have a hinge point90d,92dvia which they are connected to the base body42dof the adapter10d. The hinge points90d,92deach form a connection between the corresponding form-fit elements16d,18dand the base body42dof the adapter10d. The hinge point90d,92dfixes the form-fit elements16d,18dspaced from the outer wall94d,96dof the base body42dof the adapter10d. Thus the form-fit elements16d,18dcan be moved and deflected relative to the base body42dof the adapter10dvia the hinge point90d,92d. The hinge points90d,92dare arranged approximately in the middle of the adapter10din the axial direction. The form-fit elements16d,18dprotrude in the axial direction on both sides beyond the corresponding hinge point90d,92d. Via the hinge point90d,92d, a region of the corresponding form-fit element16d,18darranged axially above the hinge point90d,92dis deflected in an opposite direction to a region of the corresponding form-fit element16d,18darranged axially below the hinge point90d,92d.

The form-fit elements16d,18dformed as catch elements have a hook form48d,50don their side facing the further adapter14din mounted state. The hook form48d,50dis here directed inward i.e. in the direction of a centre plane of the adapter10d. On their underside, each hook form48d,50dforms a deflection chamfer52d,54dwhich is provided to deflect the corresponding form-fit element16d,18dby contact with the further adapter14dduring the mounting process. The deflection chamfers52d,54dare also oriented in the direction of the centre plane of the adapter10d, so that during mounting, the form-fit elements16d,18dare deflected outward by means of the deflection chamfers52d,54d, away from the centre plane of the adapter10d. A deflection direction of the form-fit elements16d,18dformed as catch elements is oriented outward, away from the centre plane of the adapter10d.

The wiper device comprises two actuating elements24d,26dwhich are provided to be deflected manually in order to deflect the form-fit elements16d,18dof the adapter10don dismantling. The actuating elements24d,26dare formed as protrusions on an outside of the form-fit elements16d,18d. The actuating elements24d,26dare formed integrally with the form-fit elements16d,18d. The actuating elements24d,26dare each arranged in a region of the corresponding form-fit elements16d,18dfacing away from the further adapter14din mounted state, above the corresponding hinge point90d,92d. An actuation direction in which the user actuates the actuating elements24d,26dmanually is oriented in the direction of the centre plane of the adapter10d.

On dismantling, the form-fit elements16d,18dare deflected by means of the actuating elements24d,26d. A user here, for example by his hand, exerts a deflection force on the form-fit elements of the adapter10dvia the actuating elements24d,26d. The deflection direction of the form-fit elements16d,18dis oriented at least substantially opposite the actuation direction of the corresponding actuating element24d,26d.

The further adapter14dis formed substantially the same as in the former exemplary embodiments. Only the form-fit elements20d,22dwhich are provided for form-fit connection with the form-fit elements16d,18d, formed as catch elements, are adapted to the reversed shape of the hook forms48d,50dof the form-fit elements16d,18dof the adapter10d, and have their undercut62d,64don a side of the corresponding form-fit element20d,22dfacing the centre plane of the adapter10d.

FIG. 6shows a system according to the invention with a wiper device and a further adapter14ein a fifth exemplary embodiment. The wiper device comprises an adapter10ewhich has a pivot point (not shown in more detail) to a wiper arm. The design of the form-fit elements16e,18eof the adapter10eand the actuating elements24e,26eis identical to that of the previous exemplary embodiment fromFIG. 5. In contrast to the previous exemplary embodiment, the further adapter14eis made from a curved metal sheet. The further adapter14eis here permanently connected to a spring rail76eof 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 rail76eformed as a carrier element72eis formed as an unslotted spring rail. Two form-fit elements20e,22eof the further adapter14eformed corresponding to the form-fit elements16e,18eof adapter10e, formed as catch elements, are formed such that the adapter14emade from the curved metal sheet has a shoulder, which is bent in the direction of the adapter10e, on its ends standing orthogonal to the horizontal axis. The form-fit elements16e,18eformed as catch elements can engage under these shoulders for form fit with the corresponding form-fit elements22e,24eof the further adapter14e.

FIG. 7shows a system according to the invention with a wiper device and a further adapter14fin a sixth exemplary embodiment. The wiper device comprises an adapter10fwhich has a pivot point (not shown in more detail) to a wiper arm. A design of form-fit elements16f,18f,20f,22fof the adapter10fand further adapter14f, which are provided for form-fit connection in an axial direction, and of actuating elements24f,26f, is identical to that of the first exemplary embodiment fromFIG. 1. In contrast, the further adapter14dfor connection with an unslotted spring rail76fhas two protrusions98f,100fon its side facing away from the adapter10fin mounted state, by means of which protrusions the further adapter14fis inseparably connected to the spring rail76fvia a hot stamping process. For this the spring rail76fhas two receivers102f,104fin which the protrusions98f,100fof the further adapter14fare introduced in order to connect the adapter14fto the spring rail76f.

FIG. 8shows a system according to the invention with a wiper device and a further adapter14gin a seventh exemplary embodiment. The wiper device comprises an adapter10gwhich has a pivot point (not shown in more detail) to a wiper arm. A design of form-fit elements16g,18gand further form-fit elements30g,32gof adapter10g, and of actuating elements24g,26g, is identical to that of the first exemplary embodiment fromFIG. 1. In contrast, the further adapter14gis formed as a spring rail76g. The spring rail76gformed as the further adapter14gis formed as an unslotted spring rail. Form-fit elements20g,22gand further form-fit elements66g,68gcorresponding to form-fit elements16f,18g,30g,32gof adapter10gare produced as recesses in the unslotted spring rail76g. In contrast to the former exemplary embodiment however, here the form-fit elements16g,18gof the adapter10gformed 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 elements30g,32g,66g,68gof the adapters10g,14gcan transmit smaller forces due to the low height provided by the rail76gfor force transmission.

FIG. 9shows a system according to the invention with a wiper device and a further adapter14hin an eighth exemplary embodiment. The wiper device comprises an adapter10hwhich has a pivot point (not shown in more detail) to a wiper arm. The further adapter14h, as in the previous exemplary embodiment fromFIG. 8, is formed as a spring rail76h. The adapter10has two form-fit elements16h,18hformed as catch elements. In contrast to the previous embodiment, the form-fit elements16h,18hof the adapter10hare arranged on ends of the adapter10hrunning parallel to the horizontal axis. The form-fit elements16h,18hare oriented parallel to the horizontal axis. A deflection direction of the form-fit elements16h,18hhere stands perpendicular to the horizontal axis. A fundamental design of the form-fit elements16h,18hformed as catch elements is substantially identical to the design of the corresponding form-fit elements formed as catch elements from the fourth exemplary embodiment fromFIG. 5or from the seventh exemplary embodiment fromFIG. 8.

Further form-fit elements30hof adapter10hformed as protrusions are in principle designed in the same way as in the first exemplary embodiment fromFIG. 1. In mounted state they engage in corresponding further form-fit elements66hwhich are produced as recesses in the adapter14hformed as a spring rail76h. For form-fit connection in an axial direction, the form-fit elements16h,18hformed as catch elements engage in the spring rail76h. The form-fit elements16h,18hwith their hook forms48h,50hengage laterally below the spring rail76h, 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.