Wiper blade device

Abstract

Wiper blade device with at least one holding unit (10a; 10b; 10c), which has a receiving area (12a; 12b; 12c) for a wiper blade adapter (14a; 14b; 14c), which has at least one spring rail channel (16a; 16b; 16c) for at least one spring rail (18a; 18b; 18c) and which has at least one fixing recess (20a, 22a, 24a, 26a, 28a, 30a; 20b, 22b, 24b, 26b, 28b, 30b; 20c, 22c, 24c, 26c, 28c, 30c), which is provided for fastening the wiper blade adapter (14a; 14b; 14c) and which is arranged along the Spring rail channel (16a; 16b; 16c) has an extension which is smaller than an extension of the receiving area (12a; 12b; 12c) along the spring rail channel (16a; 16b; 16c), characterized by the spring rail (18a; 18b; 18c) which has at least one locking recess (32a, 34a; 32b, 34b; 32c, 34c) which, in an assembled state of the spring rail (18a; 18b; 18c), is at least partially congruent with the fixing recess (20a, 22a; 20b, 22b;20c, 22c), wherein the wiper blade adapter (14a; 14b; 14c) has at least one locking means (48a, 50a; 48b, 50b; 48c, 50c) which is provided to engage at least partially in the locking recess (32a, 34a; 32b, 34b; 32c, 34c) and in the fixing recess (20a, 22a; 20b, 22b; 20c, 22c).

Description

State of the art

[0001] A wiper blade device with at least one holding unit has already been proposed, wherein the holding unit has a receiving area for a wiper blade adapter and at least one spring rail channel for at least one spring rail. Further prior art includes WO 2012 / 139 824 A1, DE 10 2015 215 704 A1, WO 2009 / 077 565 A1, DE 10 036 115 A1, and DE 10 2011 079 535 A1. Disclosure of the invention

[0002] A wiper blade device is proposed with at least one holding unit, which has a receiving area for a wiper blade adapter, which has at least one spring rail channel for at least one spring rail, and which has at least one fixing recess provided for fastening the wiper blade adapter and which has an extension along the spring rail channel that is smaller than an extension of the receiving area along the spring rail channel. The design according to the invention makes it possible to provide a wiper blade device with a particularly secure fastening of the spring rail and the wiper blade adapter by means of the holding unit.

[0003] In this context, a “holding unit” is to be understood in particular as a unit which is intended to connect at least one wind deflector element, at least one spring rail, at least one wiper strip and / or at least one wiper blade adapter to one another and in particular to hold them together. The holding unit is in particular intended to receive the spring rail at least partially, in particular at least to a large extent and particularly preferably completely in the circumferential direction. In this context, “at least to a large extent” is to be understood in particular as more than 50%, preferably more than 80% and particularly preferably more than 95%. In particular for receiving the wiper blade adapter, the holding unit forms at least partially, preferably at least to a large extent and particularly preferably completely, a receiving area for the wiper blade adapter.A "receiving area for the wiper blade adapter" is understood to mean, in particular, an area and / or section of the holding unit that is intended, in particular, to at least partially accommodate the wiper blade adapter. Preferably, the receiving area is at least free of a wind deflector element. "Provided" is understood to mean, in particular, specially designed and / or equipped. The fact that an object is intended for a specific function is understood to mean, in particular, that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0004] In this context, a "wiper blade adapter" is understood to mean, in particular, an adapter that has a contact area with a wiper blade component, in particular the spring rail, and is captively connected to the wiper blade component in an assembled state, and is intended to provide a coupling area of ​​the wiper blade component for coupling and / or contacting with a wiper arm adapter. In this context, a "wiper arm adapter" is understood to mean, in particular, an adapter that has a contact area with a wiper arm component, is captively connected to the wiper arm component, and is intended to provide a coupling area of ​​the wiper arm component for coupling and / or contacting with a wiper blade adapter.

[0005] To accommodate the spring rail, the holding unit forms at least partially, preferably at least for the most part, a spring rail channel. In this context, a “spring rail channel” should be understood in particular to mean a channel that is intended to accommodate the spring rail. An “extension” of an object should be understood in particular to mean a maximum distance between two points of a perpendicular projection of the object onto a plane. A “longitudinal direction” should be understood in particular to mean the main extension direction of the spring rail channel. A “main extension direction” of an object should be understood in particular to mean a direction that runs parallel to a longest edge of a smallest imaginary geometric cuboid that just encloses the object. The spring rail channel advantageously has a closed contour in at least one plane.

[0006] A “spring rail” is to be understood in particular as a macroscopic element which has at least one extension which, in a normal operating state, is elastically variable by at least 10%, in particular by at least 20%, preferably by at least 30% and particularly advantageously by at least 50%, and which in particular generates a counterforce which is dependent on a change in extension and preferably proportional to the change and which counteracts the change. Preferably, the spring rail is formed at least partially from spring steel. In an unloaded state, the spring rail preferably has essentially the shape of a bent rod and particularly advantageously of a flattened bent rod. Furthermore, the spring rail is advantageously formed in one piece. Alternatively, the spring rail can also be formed in several parts.Particularly advantageously, a curvature of the spring rail along the spring rail in an unloaded state is greater than a curvature of a vehicle surface of a motor vehicle, in particular a vehicle window, over which the spring rail is guided in at least one operating state. An "elastic object" is understood in particular to mean an object that can be repeatedly deformed without causing mechanical damage or destruction, and that, in particular, independently returns to its basic shape after deformation.

[0007] The fixing recess is in particular provided to accommodate at least one fixing means, in particular of the wiper blade adapter. The fixing recess, in particular a wall of an object which delimits the fixing recess and which has the fixing recess, is advantageously provided to prevent displacement of an object arranged at least partially in the fixing recess. The fixing recess is in particular provided to at least partially accommodate the wiper blade adapter. In particular, the holding unit at least partially encompasses the wiper blade adapter, in particular when viewed along the spring rail channel. The term “an object at least partially encompasses another object” should be understood in particular to mean that at least one straight line exists which first runs through the first object, then through the further object, and finally again through the first object. In particular, the fixing recess is a vertical recess.In this context, a “vertical recess” should be understood in particular to mean a recess that penetrates at least one object at least to a large extent and preferably completely in at least one vertical direction. In this context, a “vertical direction” should be understood in particular to mean a direction that runs at least substantially perpendicular to a surface to be wiped by the wiper strip. The vertical direction preferably runs perpendicular to a wiping direction. In this context, a “wiping direction” should be understood in particular to mean a direction that runs parallel to a surface to be wiped and in particular at least substantially perpendicular to the longitudinal direction and the vertical direction. Furthermore, the vertical direction advantageously runs perpendicular to a longitudinal direction of the wiper strip. The fixing recess preferably has a rectangular cross-section.The expression “at least substantially perpendicular” is intended here to define in particular an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular viewed in a plane, enclose an angle of 90° and the angle in particular has a maximum deviation of in particular less than 20°, advantageously less than 10° and particularly advantageously less than 5°.

[0008] In this context, a “wind deflector element” is to be understood in particular as an element that is intended to deflect an air flow or a headwind acting on the wiper blade device and / or to use it to press the wiper strip onto a surface to be wiped. The wind deflector element is preferably made at least partially of rubber and / or of an at least partially elastic plastic. The wind deflector element preferably has at least one concave inflow surface. The wind deflector element differs in particular from an end cap, a wiper strip and / or a wiper blade adapter. In an operating state, the wind deflector element advantageously extends over at least part, preferably over at least a large part, of an extension of the wiper blade device in the longitudinal direction. The wind deflector element is preferably formed as a single piece.In this context, a "wiper strip" is understood to mean, in particular, a strip intended for wiping a vehicle windshield. The wiper strip is preferably made of a rubber material.

[0009] In particular, the wind deflector element and / or at least the wiper strip is arranged at least partially, preferably at least to a large extent, on the holding unit and is in particular at least partially formed integrally with the holding unit. Furthermore, the wind deflector element, the wiper strip and / or the holding unit are preferably manufactured integrally using a co-extrusion process. In this context, "at least partially integral" is to be understood in particular to mean that at least one component of at least one object and / or at least one first object is formed integrally with at least one component of at least one further object and / or is formed integrally with at least one further object.In this context, "one-piece" should be understood in particular to mean at least materially connected, for example by a welding process, an adhesive process, an injection molding process, and / or another process deemed appropriate by a person skilled in the art. Advantageously, "one-piece" should also be understood to mean "one-piece." "One-piece" should be understood in particular to mean molded in one piece. This one piece is preferably produced from a single blank, a mass, and / or a cast, particularly preferably using an injection molding process, in particular a single-component and / or multi-component injection molding process.

[0010] Advantageously, the extension of the fixing recess along the spring rail channel corresponds to at most 90%, preferably at most 70%, and particularly preferably at most 50% and / or in particular at least 10%, preferably at least 20%, and particularly preferably at least 30% of the extension of the receiving area along the spring rail channel. This allows for precise positioning of the wiper blade adapter on the holding unit, particularly during assembly.

[0011] It is further proposed that the holding unit have at least one further fixing recess, which is in particular designed to be at least partially, preferably completely congruent with the fixing recess and arranged offset therefrom along the spring rail channel. This advantageously makes it possible to achieve a uniform distribution of force on the holding unit. The term “two objects are at least partially congruent” should be understood in particular to mean that the two objects have at least one opening and in particular a main extension surface of the same size, which in particular have the same outline and / or the same shape. Two objects are in particular completely congruent if their main extension surfaces are congruent. A “main extension surface” of an object should be understood in particular to mean a largest side surface of a smallest imaginary geometric cuboid which just completely encloses the object.The fixing recess and the further fixing recess are in particular arranged offset from one another such that their projections at least partially overlap when viewed in the wiping direction. The fixing recess and the further fixing recess are arranged, in particular, on different, in particular opposite, sides of the holding unit when viewed along the spring rail channel. Preferably, the fixing recess and the further fixing recess are arranged rotationally symmetrically about a central axis of rotation of the holding unit. In this context, a "central axis of rotation" is to be understood in particular as an imaginary axis of rotation which runs at least largely through a center of gravity of an object. In the present case, the central axis of rotation runs at least substantially perpendicular to the longitudinal direction and in particular perpendicular to a surface to be wiped. In particular, the holding unit has additional fixing recesses.

[0012] Furthermore, it is proposed that the wiper blade device comprise the spring rail, which is provided in particular for accommodation in the spring rail channel and which has at least one locking recess which, in an assembled state of the spring rail, is at least partially congruent with the fixing recess. This makes it possible to create a particularly stable connection between the spring rail, the holding unit, and the wiper blade adapter. Advantageously, at least the locking recess and at least the fixing recess lie at least partially above one another. "At least partially congruent" is to be understood in particular as meaning that the main extension surfaces of two objects at least partially overlap.In particular, the locking recess, in particular its main extension surface, is at least 10%, preferably at least 20% and particularly preferably at least 30% and / or at most 70%, preferably at most 60% and particularly preferably at most 50% congruent with the fixing recess, in particular its main extension surface.

[0013] It is also proposed that the spring rail have at least one further locking recess, which is congruent with the locking recess and arranged offset therefrom along the spring rail. This allows a uniform distribution of force on the spring rail. The locking recess and the further locking recess are arranged, in particular viewed along the spring rail channel, on different, in particular opposite, sides of the spring rail. Preferably, the locking recess and the further locking recess are arranged rotationally symmetrically about a central rotation axis of the spring rail. In particular, it is conceivable for the holding unit to have additional locking recesses.

[0014] It is further proposed that the wiper blade device comprises the wiper blade adapter, which has at least one fixing means which, in an assembled state, is arranged at least partially in the fixing recess.

[0015] This allows the wiper blade adapter to be secured to the holding unit. In particular, the fixing means has an extension along the spring rail channel that is at least 60%, preferably at least 80%, and particularly preferably at least 100% smaller than the fixing recess. In particular, a main extension surface of the fixing means is at least 10%, preferably at least 20%, and particularly preferably at least 30% and / or at most 70%, preferably at most 60%, and particularly preferably at most 50% congruent with the fixing recess.

[0016] It is also proposed that the wiper blade adapter have at least one further fixing means, which is designed equivalently to the fixing means and is arranged along the spring rail channel without being offset relative to the latter. This advantageously allows a uniform distribution of force on the wiper blade adapter to be achieved. The fixing means and the further fixing means are arranged, in particular viewed along the spring rail channel, on different, in particular opposite, sides of the wiper blade adapter. Preferably, the fixing means and the further fixing means are arranged rotationally symmetrically about a central rotation axis of the wiper blade adapter. In particular, it is conceivable for the wiper blade adapter to have additional holding means.

[0017] It is further proposed that the fixing means be designed to at least partially encompass the spring rail. This allows the wiper blade adapter to be fastened to the spring rail in the vertical direction. In particular, the fixing means has guide grooves designed to guide the spring rail.

[0018] It is further proposed that the wiper blade adapter have at least one locking means, which is designed to engage at least partially in the locking recess and the fixing recess when mounted. This allows the spring rail to be secured along the spring rail channel relative to the retaining unit and the wiper blade adapter.

[0019] In an advantageous embodiment of the invention, it is proposed that the locking means be designed as a bolt-like element. This allows for simple assembly. Preferably, the locking means is designed as a separate component. In particular, the wiper blade adapter has at least one receiving recess, which is intended to at least partially accommodate the locking means. The locking means can, in particular, be designed as a screw.

[0020] In a preferred embodiment of the invention, it is proposed that the locking means be designed as a latching hook. This advantageously enables tool-free assembly. In particular, the locking means is connected at least substantially in one piece to the wiper blade adapter. In this context, a "latching hook" is understood to mean, in particular, a spring-elastic means for establishing a latching connection, which is intended to be elastically deflected during assembly.

[0021] In a preferred embodiment, it is proposed that the wiper blade adapter be designed in at least two parts, preferably in several parts. This can simplify production because a complex component, such as the wiper blade adapter, in particular due to its shape, may not be extrudable, but can easily be assembled from two or more extruded components. Advantageously, the wiper blade adapter has a first component and a second component, which can be connected to one another in a form-fitting and / or force-fitting manner. Preferably, the first and / or the second component has form-fitting elements, which are designed to correspond to one another, in particular. Preferably, the first component has at least the fixing means and in particular the second component has at least the locking means. In an alternative embodiment, only the first or only the second component can have the fixing means and locking means.

[0022] A method for assembling a wiper blade device is proposed, wherein the wiper blade adapter is at least partially arranged in the receiving area, the spring rail is inserted into the spring rail channel, the locking recess is at least partially aligned with the fixing recess, and the spring rail is secured by means of the locking means, the fixing recess, and the locking recess. This allows for particularly secure fastening of the spring rail and the wiper blade adapter by means of the holding unit.

[0023] The wiper blade device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the wiper blade device according to the invention may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a function described herein. drawing

[0024] Further advantages will become apparent from the following description of the drawings. The drawings illustrate three exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

[0025] They show: Fig. 1 a wiper with a wiper arm and a wiper blade, which has a wiper blade device, in a side view, Fig. 2 a part of the wiper blade device with a holding unit, a spring rail and a wiper blade adapter in an exploded view, Fig. 3a,b a part of the holding unit and the spring rail in a plan view, Fig. 4 a part of the wiper blade adapter in a perspective view from below, Fig. 5a, b a part of the wiper blade device in half-section during assembly, Fig. 6 a part of another wiper blade device with a holding unit, a spring rail and a wiper blade adapter in an exploded view, Fig. 7 a part of the wiper blade adapter from Fig. 6 in a disassembled state in a perspective view, Fig. 8 a part of the further wiper blade device Fig. 6 in half-section during an assembly, Fig. 9 shows part of a further alternative wiper blade device with a holding unit, a spring rail and a wiper blade adapter in an exploded view and Fig. 10 the wiper blade adapter from Fig. 9 in a disassembled state in a perspective view. Description of the embodiments

[0026] In the Fig. 1 shows a side view of a wiper with a wiper arm 52a and a wiper blade 53a, which has a wiper blade device. The wiper blade 53a is designed as a flat wiper blade. The wiper blade 53a is intended for cleaning a vehicle window 54a. The wiper arm 52a has a wiper arm adapter 56a. The wiper arm adapter 56a is designed in a manner known to those skilled in the art, such as, for example, as a toplock adapter or a sidelock adapter. The wiper arm 52a is intended for attachment to a drive shaft 58a of the wiper. The drive shaft 58a is designed to be rotatable in an oscillating manner by a drive motor (not shown in detail). The wiper blade 53a has a wiper blade device. The wiper blade device has a wiper blade adapter 14a. The wiper blade adapter 14a is provided for coupling to the wiper arm adapter 56a, in particular by means of further components not shown.The wiper blade adapter 14a is detachably connected to the wiper arm adapter 56a in a manner known to those skilled in the art.

[0027] The wiper blade device has a first wind deflector element 62a. The first wind deflector element 62a is provided for deflecting airflow and for generating a contact pressure of the wiper blade device in the direction of the vehicle window 54a. The first wind deflector element 62a extends almost over one half of a total longitudinal extent of the wiper blade device. The wiper blade device has a second wind deflector element 64a. The wiper blade device can alternatively or additionally have a number of wind deflector elements other than two. The second wind deflector element 64a is formed separately from the first wind deflector element 62a. The first wind deflector element 62a and the second wind deflector element 64a are mirror-symmetrical to one another. The second wind deflector element 64a is provided for deflecting airflow and for generating a contact pressure of the wiper blade device in the direction of the vehicle window 54a.The second wind deflector element 64a extends almost over one half of the total longitudinal extent of the wiper blade device. Furthermore, the wiper blade device comprises a holding unit 10a. The holding unit 10a has end sections 66a, 68a at opposite free ends. The wiper blade device has two end caps 70a, 72a. The end sections 66a, 68a of the holding unit 10a accommodate the end caps 70a, 72a. The end caps 70a, 72a close off the wiper blade device in the longitudinal direction 74. The longitudinal direction 74a runs parallel to a main extension direction of the wiper blade device.

[0028] Fig. 2 shows a portion of the wiper blade device with the holding unit 10a, a spring rail 18a, and the wiper blade adapter 14a in an exploded view. In an assembled state, the holding unit 10a connects at least one spring rail 18a of the wiper blade device and the wiper blade adapter 14a to one another. Alternatively and / or additionally, the holding unit 10a connects the spring rail 18a, the wiper blade adapter 14a, the wind deflector elements 62a, 64a, and / or a wiper strip 60a of the wiper blade device to one another. The two wind deflector elements 62a, 64a are arranged on a large portion of the holding unit 10a. The wind deflector elements 62a, 64a are formed integrally with the holding unit 10a. The wind deflector elements 62a, 64a have a concave inflow surface. The wind deflector elements 62a, 64a consist at least partially of rubber and / or of an at least partially elastic plastic.The holding unit 10a has a receiving area 12a for the wiper blade adapter 14a. The receiving area 12a has an at least substantially flat support surface 78a. The support surface 78a serves to position the wiper blade adapter 14a. The holding unit 10a has an at least substantially closed spring rail channel 16a. The spring rail channel 16a is largely formed by the holding unit 10a. The spring rail channel 16a is provided to receive a spring rail 18a of the wiper blade device. The spring rail channel 16a has an at least substantially rectangular cross-section. The spring rail 18a has an elongated, flattened shape. The spring rail 18a has an at least substantially rectangular cross-section. The spring rail 18a is chamfered at its free ends. The chamfered end is intended to serve as an insertion aid 76a for insertion into the spring rail channel 16a.The spring rail 18a is formed from spring steel. The spring rail 18a is formed in one piece. Alternatively or additionally, it is also conceivable for the spring rail 18a to be formed in multiple parts, in particular from two or more spring rail parts running side by side. The wiper strip 60a is arranged largely on the holding unit 10a. Furthermore, the wiper strip 60a is formed in one piece with the holding unit 10a. The wiper strip 60a is made of rubber.

[0029] Fig. 3a shows a part of the holding unit 10a and the spring rail 18a in a plan view. In Fig. 3a, the holding unit 10a and the spring rail 18a are shown side by side. The holding unit 10a has a fixing recess 20a. The fixing recess 20a is arranged in a central section of the holding unit 10a. The fixing recess 20a is arranged within the receiving area 12a. The fixing recess 20a is designed as a vertical recess. The fixing recess 20a has an at least substantially rectangular cross-section. Alternatively, the cross-section can have any shape, as long as it matches the shape of a component corresponding to the fixing recess 20a. The fixing recess 20a has an extension along the spring rail channel 16a that is smaller than an extension of the receiving area 12a along the spring rail channel 16a. In addition, the extension of the fixing recess along the spring rail channel 16a corresponds to less than 50% of the extension of the receiving area 12a along the spring rail channel 16a.The holding unit 10a has a further fixing recess 22a.

[0030] The further fixing recess 22a is at least substantially congruent with the fixing recess 20a. The further fixing recess 22a is arranged offset from the fixing recess 20a along the spring rail channel 16a. When the fixing recess 20a is imaged onto the further fixing recess 22a in the wiping direction 80a, these partially overlap. The fixing recess 20a and the further fixing recess 22a are arranged on different, opposite sides of the holding unit 10a, viewed along the spring rail channel 16a. The fixing recess 20a and the further fixing recess 22a are arranged rotationally symmetrically about a central rotation axis 82a of the holding unit 10a. The central rotation axis 82a is at least substantially perpendicular to a plane spanned by the wiping direction 80a and the longitudinal direction 74a.

[0031] Furthermore, the holding unit 10a has four additional fixing recesses 24a, 26a, 28a, 30a. However, it is also conceivable for the holding unit 10a to have a number of additional fixing recesses 24a, 26a, 28a, 30a that differs from four. In the following, objects with the same designation are to be distinguished in particular by: "an object," "another object," and an "additional object." The object, the further object, and the additional object are summarized under the term "the objects." The four additional fixing recesses 24a, 26a, 28a, 30a are arranged on the holding unit 10 within the receiving area 12a. The additional fixing recesses 24a, 26a, 28a, 30a are formed at least substantially congruent with the fixing recess 20a and the further fixing recess 22a. The additional fixing recesses 24a, 26a, 28a, 30a are arranged offset from one another on the holding unit 10a.The additional fixing recesses 24a, 26a, 28a, 30a are arranged on different, opposite sides of the holding unit 10a, viewed along the spring rail channel 16a. The two additional fixing recesses 24a, 26a are located on the side of the fixing recess 20a. The two additional fixing recesses 28a, 30a are located on the side of the further fixing recess 22a. The arrangement of the fixing recess 20a, the further fixing recess 22a, and the additional fixing recesses 24a, 26a, 28a, 30a is rotationally symmetrical about the central rotation axis 82a. The arrangement of the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a exhibits twofold rotational symmetry.

[0032] The holding unit 10a can be manufactured using a co-extrusion process. The holding unit 10a can be manufactured in one piece with the wiper strip 60a and the wind deflector element 62a, 64a. The receiving area 12a and the fixing recess 20a, the further fixing recess 22a, and the additional fixing recesses 24a, 26a, 28a, 30a can be cut out of the holding unit 10a, the wiper strip 60a, and / or the wind deflector element 62a, 64a.

[0033] The spring rail 18a has a locking recess 32a. The locking recess 32a is arranged in a central section of the spring rail 18a. The locking recess 32a is a vertical recess. In the present case, the locking recess 32a has an at least substantially rectangular cross-section. Alternatively, the cross-section can have any shape, as long as it fits a component corresponding to the locking recess 32a. The locking recess 32a has an extension along the spring rail channel 16a that is smaller than an extension of the fixing recess 20a along the spring rail channel 16a. In addition, the extension of the locking recess 32a along the spring rail channel 16a 74a corresponds to a maximum of 50% of the extension of the fixing recess 20a along the spring rail channel 16a.In an assembled state of the spring rail 18a, the locking recess 32a is at least 30% and / or at most 50% congruent with the fixing recess 20a. Furthermore, the spring rail 18a has a further locking recess 34a. Additionally and / or alternatively, however, the spring rail can also have additional locking recesses. The further locking recess 34a is formed at least substantially congruent with the locking recess 32a. The locking recess 32a and the further locking recess 34a are arranged offset from one another along the spring rail channel 16a. The projections of the locking recess 32a and the further locking recess 34a in the wiping direction 80a do not overlap. The locking recess 32a and the further locking recess 34a are arranged on different opposite sides of the spring rail 18a, viewed along the spring rail channel 16a.The locking recess 32a and the further locking recess 34a are arranged rotationally symmetrically around a central rotation axis 84a of the spring rail 18a. In an assembled state, the central rotation axis 84a is at least substantially identical to the central rotation axis 82a of the holding unit 10a. Alternatively and / or additionally, the spring rail can have additional locking recesses.

[0034] In Fig. 3b shows a part of the holding unit 10a and the spring rail 18a in a top view. Fig. Figure 3 schematically shows an assembled state of the spring rail 18a and the holding unit 10a. The spring rail 18a is inserted into the spring rail channel 16a. The spring rail 18a is positioned such that the fixing recess 20a and the locking recess 32a, as well as the further fixing recess 22a and the further locking recess 34a, at least partially overlap, coincide, and / or are at least partially congruent.

[0035] Fig. 4 shows a portion of the wiper blade adapter in a perspective view from below. The wiper blade adapter 14a has a fixing means 36a. During assembly, the fixing means 36a is arranged at least partially in the fixing recess 20a. In an assembled state, the fixing means 36a at least partially encompasses the spring rail 18a. Furthermore, the fixing means 36 has at least one guide groove provided for guiding the spring rail 18a. The wiper blade adapter 14a has a further fixing means 38a, which is designed equivalently to the fixing means 36a. The fixing means 38a and / or the further fixing means 40a have an extension along the spring rail channel 16a which corresponds to at most 50% of an extension of the fixing recess 20a and / or the further fixing recess 22a along the spring rail channel 16a.The fixing means 36a and the further fixing means 38a are arranged on different, opposite sides of the wiper blade adapter 14a. Furthermore, the wiper blade adapter 14a has four additional fixing means 40a, 42a, 44a, 46a. Alternatively or additionally, the wiper blade adapter can also have a number of additional fixing means 40a, 42a, 44a, 46a other than four. The extension of the fixing means 36a and the further fixing means 38a along the spring rail channel 16a corresponds to a maximum of 50% of the extension of the additional fixing means 40a, 42a, 44a, 46a along the spring rail channel 16a. The extension of the additional fixing means 40a, 42a, 44a, 46a along the spring rail channel 16a corresponds at least substantially to the extension of the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a along the spring rail channel 16a.Furthermore, two of the additional fixing means 40a, 42a, 44a, 46a are arranged on different, opposite sides of the wiper blade adapter 14a. The fixing means 36a, 38a, 40a, 42a, 44a, 46a are arranged at least partially in the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a in an assembled state.

[0036] The wiper blade adapter 14a has a locking means 48a. In an assembled state, the locking means 48a engages in the locking recess 32a and the fixing recess 20a. Advantageously, the locking means 48a has an at least substantially round cross-section. Alternatively, the cross-section can have any shape, as long as it fits a component corresponding to the locking means. The locking means 48a has an extension along the spring rail channel 16a that is smaller than an extension of the fixing recess 20a along the spring rail channel 16a. Furthermore, the extension of the locking means 48a along the spring rail channel 16a corresponds to at most 50% of the extension of the fixing recess 20a along the spring rail channel 16a. In an assembled state, the locking means 48a is at least 30% and / or at most 50% congruent with the fixing recess 20a.Furthermore, the wiper blade adapter 14a has a further locking means 50a. Additionally and / or alternatively, however, the wiper blade adapter can also have additional locking means. The further locking means 50a is designed equivalently to the locking means 48a. The locking means 48a and the further locking means 50a are arranged offset from one another along the spring rail channel 16a. The projections of the locking means 48a and the further locking means 50a in the wiping direction 80a do not overlap. The locking means 48a and the further locking means 50a are arranged on different, opposite sides of the wiper blade adapter 14a, viewed along the spring rail channel 16a. The locking means 48a and the further locking means 50a are arranged rotationally symmetrically about a central rotation axis 86a of the holding unit 10a.In an assembled state, the central rotation axis 86a of the wiper blade adapter 14a is at least substantially identical to the central rotation axis 82a of the holding element. In the present case, the locking means 48a and the further locking means 50a are designed as separate components. The wiper blade adapter 14a has a receiving recess 88a, which is intended to receive the locking means 48a. Furthermore, the wiper blade adapter 14a has a further receiving recess 88a, which is intended to receive the further locking means 50a. Alternatively and / or additionally, the wiper blade adapter 14a can have additional receiving recesses 88a, 90a. In the present case, the locking means 48a, 50a are at least substantially bolt-like. Furthermore, it is conceivable for the locking means 48a, 50a to have a conical shape. Advantageously, the locking means 48a, 50a are designed as screws.Further advantageously, the receiving recesses 88a, 90a have a thread. Furthermore, the positive and / or non-positive connection of the locking means 48a, 50a and the receiving recesses 88a, 90aa can be designed in a stable, known manner that is particularly advantageous for a person skilled in the art.

[0037] In the Fig. 5a and Fig. Figure 5b shows a part of the wiper blade device in a half-sectional view during assembly. In an assembly step, to fasten the wiper blade adapter 14a to the holding unit 10a, the wiper blade adapter 14a is arranged in the vertical direction 102a on the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a of the holding unit 10a (see Figure 5b). Fig. 2). The spring rail channel 16a is open in the area of ​​the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a in the wiping direction 80a. The fixing means 36a, 38a, 40a, 42a, 44a, 46a engage at least partially in the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a. Furthermore, the spring rail 18a is inserted into the spring rail channel 16a. The guide grooves of the fixing means 36a, 38a, 40a, 42a, 44a, 46a serve to guide the spring rail 18a. In the assembled state, the spring rail 18a is positioned in the spring rail channel 16 such that the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a of the holding unit 10 and the locking recesses 32a, 34a of the spring rail 18a at least partially overlap. In an assembly step, as shown in Fig. 5b, the locking means 48a, 50a are fastened to the receiving recesses 88a, 90a of the wiper blade adapter 14a.

[0038] Furthermore, the locking means 48a, 50a are arranged at least partially in the fixing recesses 20a, 22a, 24a, 26a, 28a, 30a and the locking recesses 32a, 34a.

[0039] In the Fig. 6 to 10 show further embodiments of the invention. The following descriptions and the drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference is also made to the drawings and / or the description of the other embodiments, in particular to the Fig. 1 to 5. To distinguish the embodiments, the letter a is added to the reference numerals of the embodiment in the Fig. 1 to 5. In the examples of the Fig. In paragraphs 6 to 10, the letter a is replaced by the letters b and c.

[0040] In Fig. Figure 6 shows a part of another wiper blade device with a holding unit 10b, a spring rail 18b, and a wiper blade adapter 14b in an exploded view. In the present case, the wiper blade adapter 14b is formed in two parts (see Figure 6). Fig. 6). Alternatively and / or additionally, the wiper blade adapter could also be designed in three, four, and / or multiple parts.

[0041] In Fig. 7 is a part of the wiper blade adapter 14b from Fig. 6 in a disassembled state in a perspective view. The wiper blade adapter 14b has a first component. The first component is designed as a casing unit 92b. The casing unit 92b has four interconnected side walls. The casing unit 92b is at least substantially rectangular in a plan view. Furthermore, the wiper blade adapter 14b has a second component. The further component is a cover unit 94b. The cover unit 94b is at least substantially plate-shaped. In the present case, the cover unit 94b has fixing means 36b, 38b, 40b, 42b, 44b, 46b. Furthermore, the cover unit 94b has locking means 48b, 50b. The locking means 48b, 50b are arranged at least partially on the fixing means 36b, 38b, 40b, 42b, 44b, 46b by means of deflection arms 98b, 100b. The locking means 48b, 50b are designed as latching hooks.During assembly, the casing unit 92b and the cover unit 94b of the wiper blade adapter 14b are connected to one another by means of a positive and / or non-positive connection. To connect the components, the wiper blade adapter 14b has a coupling unit 96b. The casing unit 92b can have clamping hooks. The cover unit 94b can have clamping edges corresponding to the clamping elements. In the present case, the clamping hooks and the clamping edges can form the coupling unit 96b of the wiper blade adapter 14b. Alternatively, the casing unit 92b could have the clamping edges and the cover unit 94b could have the clamping hooks. Alternatively, the cover unit 94b can rest at least partially on the side walls of the casing unit, whereby the casing unit is positively connected to a holding unit 10b and the cover unit 94b in an assembled state of the wiper blade device.The coupling unit 96b can be designed in a particularly advantageous manner known to a person skilled in the art to form a positive and / or non-positive connection between the cover unit 94b and the formwork unit 92b.

[0042] In Fig. 8 is a part of the further wiper blade device from Fig. 6 is shown in a half-sectional view during assembly. In the present case, the wiper blade adapter 14b is formed in two parts. To attach the wiper blade adapter 14b to the holding unit 10b, the casing unit 92b is arranged in the vertical direction 102b on fixing recesses 20b, 22b, 24b, 26b, 28b, 30b of the holding unit 10b (cf. Fig. 6). Furthermore, the cover unit 94b is arranged on the formwork unit 92b. The cover unit 94b and the formwork unit 92b are connected to each other in a form-fitting and / or force-fitting manner by means of the coupling unit 96b. If a spring rail 18b is inserted into a spring rail channel 16b, an insertion aid 76b of the spring rail 18b deflects the locking means 48b, 50b. The locking means 48b, 50b are designed to deflect the spring rail 18b by means of the deflection arms 98b, 100b. In the assembled state, the spring rail 18b is positioned in the spring rail channel 16b such that the fixing recesses 20b, 22b, 24b, 26b, 28b, 30b of the holding unit 10 and the locking recesses 32b, 34b of the spring rail 18b at least partially overlap. The deflection arms 98b, 100b are elastically retracted. The locking means 48b, 50b are at least partially arranged in the fixing recesses 20b, 22b, 24b, 26b, 28b, 30b and the locking recesses 32b, 34b.

[0043] In Fig. 8 shows a part of another alternative wiper blade device with a holding unit 10c, a spring rail 18c and a wiper blade adapter 14c in an exploded view. In Fig. 10 is the wiper blade adapter 14a from Fig.9 in a disassembled state in a perspective view. In the present case, a cover unit 94c of a wiper blade adapter 14c has fixing means 36c, 38c, 40c, 42c, 44c, 46c. A casing unit 92c in the present case has locking means 48c, 50c. The locking means 48c, 50c are arranged on side walls of the casing unit 92c by means of deflection arms 98c, 100c. The locking means 48c, 50c are integrally connected to the deflection arms 98c, 100c. In the present case, a coupling unit 96c of the wiper blade adapter 14c is formed by the cover unit 94c being arranged in a form-fitting manner on the locking means 48c, 50c during assembly. The fixing means 36c, 38c, 40c, 42c, 44c, 46c engage in fixing recesses 20c, 22c, 24c, 26c, 28c, 30c of a holding unit 10c and at least partially in locking recesses 32c, 34c of a spring rail 18c.In an assembled state, the formwork unit 92c is positively secured between the holding unit 10c and the cover unit 94c.

Claims

[1] Wiper blade device with at least one holding unit (10a; 10b; 10c), which has a receiving area (12a; 12b; 12c) for a wiper blade adapter (14a; 14b; 14c), which has at least one spring rail channel (16a; 16b; 16c) for at least one spring rail (18a; 18b; 18c) and which has at least one fixing recess (20a, 22a, 24a, 26a, 28a, 30a; 20b, 22b, 24b, 26b, 28b, 30b; 20c, 22c, 24c, 26c, 28c, 30c), which is provided for fastening the wiper blade adapter (14a; 14b; 14c) and which has an extension along the spring rail channel (16a; 16b; 16c) which is smaller than an extension of the receiving area (12a; 12b; 12c) along the spring rail channel (16a; 16b; 16c), characterized bythe spring rail (18a; 18b; 18c), which has at least one locking recess (32a, 34a; 32b, 34b; 32c, 34c) which, in an assembled state of the spring rail (18a; 18b; 18c), is at least partially congruent with the fixing recess (20a, 22a; 20b, 22b; 20c, 22c), wherein the wiper blade adapter (14a; 14b; 14c) has at least one locking means (48a, 50a; 48b, 50b; 48c, 50c) which is provided to be inserted at least partially into the locking recess (32a, 34a; 32b, 34b; 32c, 34c) and into the fixing recess (20a, 22a; 20b, 22b; 20c, 22c) to intervene. [2] Wiper blade device according to claim 1, characterized by that the extension of the fixing recess (20a, 22a, 24a, 26a, 28a, 30a; 20b, 22b, 24b, 26b, 28b, 30b; 20c, 22c, 24c, 26c, 28c, 30c) along the spring rail channel (16a; 16b; 16c) corresponds to at most 90% of the extension of the receiving area (12a; 12b; 12c) along the spring rail channel (16a; 16b; 16c). [3] Wiper blade device according to one of the preceding claims, characterized by the wiper blade adapter (14a; 14b; 14c), which has at least one fixing means (36a, 38a, 40a, 42a, 44a, 46a; 36b, 38b, 40b, 42b, 44b, 46b; 36c, 38c, 40c, 42c, 44c, 46c) which, in an assembled state, is arranged at least partially in the fixing recess (20a, 22a, 24a, 26a, 28a, 30a; 20b, 22b, 24b, 26b, 28b, 30b; 20c, 22c, 24c, 26c, 28c, 30c). [4] Wiper blade device according to claim 3, characterized by that the fixing means (36a, 38a, 40a, 42a, 44a, 46a; 36b, 38b, 40b, 42b, 44b, 46b; 36c, 38c, 40c, 42c, 44c, 46c) is provided to at least partially encompass the spring rail (18a; 18b; 18c). [5] Wiper blade device according to claim 1, characterized by that the locking means (48a, 50a) is designed as a bolt-like element. [6] Wiper blade device according to claim 1, characterized bythat the locking means (48b, 50b; 48c, 50c) is designed as a latching hook. [7] Wiper blade device according to one of the preceding claims, characterized by that the wiper blade adapter (14a; 14b; 14c) is formed in at least two parts. [8] Holding unit (10a; 10b; 10c) for a wiper blade device according to one of the preceding claims. [9] Wiper blade adapter (14a; 14b; 14c) for a wiper blade device according to one of claims 1 to 7. [10] Wiper blade (53a) with at least one wiper blade device according to one of claims 1 to 7.

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