Wiper device, in particular for a motor vehicle, with a retractable wiper lip

Abstract

Wiper device (1), in particular for a motor vehicle, with a holding device (2) and a wiper lip (6). It is proposed that the holding device (2) has at least one elongate holding body (8) extending along a longitudinal extent (7) and having a hollow profile (10) open at one end (9) into which the wiper lip (6) can be inserted from the open end (9) along the longitudinal extent (7). That a fastening slot (15) running along the longitudinal extent (7) is provided on the hollow profile (10), and that a web (17) of the wiper lip (6) extends through the fastening slot (15) in the inserted state.

Description

Prior ArtThe invention relates to a wiper device which is used in particular for a motor vehicle. The invention relates in particular to the field of passenger cars (cars) and trucks (trucks).DE 198 54 307 A1 discloses a wiper blade for cleaning motor vehicle windows. The known wiper blade comprises a wiper strip held by a support bracket system.Disclosure of the InventionThe wiping device according to the invention having the features of the main claim has the advantage that an improved configuration and mode of operation are made possible. In this case, a simpler construction of a wiper device and / or a simpler replacement of a wiper blade can be made possible.The measures listed in the dependent claims also result in advantageous refinements and improvements of the features specified in the main claim.It is advantageous that the wiper lip has a wiper lip edge which is guided over a pane during operation for wiping, and that the fastening slot is formed on a side of the hollow profile facing the wiper lip edge of the wiper lip. This allows an advantageous fastening in which forces occurring during wiping can be absorbed in an optimized manner.It is advantageous that the wiper lip has a retaining strip connected to the web and that the retaining strip of the wiper lip engages behind one side of the hollow profile at the fastening slot from the inside in the inserted state. This makes it possible to achieve a positive fit that ensures reliable fastening over the service life.It is advantageous that an end piece is provided which can be detachably connected at least indirectly to the holding body, and that the end piece connected to the holding body secures the wiper lip in the inserted state in the hollow profile against moving out along the longitudinal extension. The end piece can allow reliable fastening even with a simple configuration of the wiper lip. Simple replacement by a user can be made possible.It is advantageous that the end piece can be connected at least indirectly to the retaining body by means of a latching connection. As a result, a connection mechanism that can be operated easily and intuitively can be realized.It is advantageous that the holding device is designed as a wiper arm, that the holding body of the wiper arm is formed at least substantially by the hollow profile, and that the end piece can be detachably connected to the end of the hollow profile. Thus, in the case of a wiper arm, a wiper lip can be mounted in a simple manner, which wiper lip can be exchanged in a simple manner by a user.However, another configuration of the wiping device is also possible. In particular, a configuration can be realized which corresponds to a flat-bow wiper.It is advantageous that the at least one holding body has an at least substantially closed receiving profile, that the holding device has at least one spring leaf which extends at least substantially over the longitudinal extent through the receiving profile, and that a connecting piece which is preferably fixedly connected to the spring leaf is provided at the end of the hollow profile and to which the end piece can be detachably connected. By means of one or more holding bodies, a configuration corresponding to a flat-bow wiper can be realized. In this case, simple replacement of the wiper lip can be made possible.It is advantageous that the wiper lip has a retaining strip connected to the web, that at least one recess is provided on the retaining strip, and that the end piece engages in the recess of the retaining strip of the wiper lip. A positive fit can thereby be realized. In this way, in particular a connection which is in principle releasable between the wiper lip and the end piece can be realized, so that a user can separate the end piece from the wiper lip, for example in the disassembled state of the wiper lip, and then optionally reuse the end piece. In addition, dismantling or pulling out of the wiper lip can be facilitated.In a modified embodiment, additionally or alternatively, a different connection between the end piece and the wiper lip is also possible. For example, the wiper lip can also be chemically connected to the end piece, in particular by adhesive bonding.It is advantageous that at least one recess of the retaining strip is provided on a longitudinal side of the wiper lip and that a projection is formed on the end piece, which projection engages in the recess of the retaining strip provided on the longitudinal side. This allows reliable positive locking to be achieved, with the space requirement being low.It is advantageous that at least one recess of the retaining strip extends from a first longitudinal side of the wiper lip to a second longitudinal side of the wiper lip, and that a rib is formed on a side of the end piece facing the wiper lip, which rib engages in the recess extending from the first longitudinal side to the second longitudinal side. This allows reliable positive locking to be achieved, with the space requirement being low.It is advantageous that the wiper lip and the end piece are not connected to one another. In this embodiment, the assembled end piece can only block the wiper lip. The wiper lip can be mounted with play, so that a certain amount of movement to and fro between end stops is possible, or can be mounted without substantial play.Depending on the configuration, one or more of the following features and advantages can be realized.In one possible embodiment, a wiper arm can be realized with a wiper lip that can be easily replaced. In this case, at least three and optionally also exactly three components can be provided: a wiper arm which realizes the basic structure and which can be connected to a shaft of an electric motor. A wiper lip, which can be realized in the form of a rubber part or soft plastic part or the like. And an end piece which can assume the function of an end cap and which realizes a fixing of the wiper lip on the wiper arm. The end cap can be released by means of an actuating button.The wiper arm can thus hold the wiper lip, wherein simple removal of the wiper lip and simple replacement of the wiper lip can be possible. The end piece can be arranged as an outer end piece on an outer circular arc of the wiping movement.The wiper arm can preset the movement of the wiper lip via the pane when the latter is driven. The wiper arm can be formed in the region of the wiper lip by a hollow profile. The wiper lip can be fastened to the hollow profile and held over its entire longitudinal extent. In a modified embodiment, the wiper lip can also be fastened or held only in one or more sections.In an advantageous embodiment, the end piece is provided with a release mechanism which enables simple release of the end piece from the wiper arm. For example, an actuating button may be provided on the end piece. In a modified embodiment, such a release mechanism or an actuating button can also be provided on the wiper arm. The end piece and the wiper arm can be pushed into one another in a detachable manner when the end piece is mounted.The wiper lip can be fixed to the end piece in the mounted or inserted state. For this purpose, the end piece can have a projection which engages in a cutout on the wiper lip. This allows fixing of the wiper lip along the longitudinal extent. Here, the wiper lip can be replaced easily by a user.In a modified embodiment, the wiper lip cannot be connected to the end piece in the inserted state. In this case, a clearance along the longitudinal extent may or may not be predetermined when the wiper lip is mounted. The end piece can support or fix the wiper lip transversely to the longitudinal extent in addition to the wiper arm when a wiping movement takes place. Furthermore, the end piece ensures captive retention.A further embodiment can be effected in accordance with a flat bow wiper, wherein an exchangeable wiper lip is provided. In this case, instead of an end cap, a combination of an end piece and a connecting piece can be provided, which can simplify an exchange of the wiper lip. The connecting piece can be mounted in a fixed position on the holding body and ensure the connection to the end piece. The end piece can be firmly connected to the wiper lip. A releasable connection can be realized between the connecting piece and the end piece.Means for securing, releasing and replacing the end piece may be provided on the connector. This can simplify the configuration of the end piece, which is optionally changed together with the wiper lip.A spring blade can ensure the stability of the wiper device. The term "spring blade" is to be understood here in general and also includes configurations in which the spring blade substantially ensures structural stability during wiping in order to guide, in particular pull, the wiper lip over a pane in accordance with a wiping movement. The spring blade does not necessarily have to be under a prestress when the wiper device 1 is mounted.The connector may be connected to the spring leaf. The connecting piece can be provided on the inner arc or on the outer arc of the wiping movement. The connector may include means for connecting to the end piece and a release mechanism that enables the connection to the end piece to be released. A latching connection can be provided here.The fixing of the wiper lip can take place via the end piece when the latter is connected to the connecting piece. In this case, the end piece can be connected to the wiper lip.The end piece can also not be connected to the wiper lip. Then, the end piece, when connected to the connecting piece, can block a displacement of the wiper lip along its extension.The end piece may have a protrusion that engages a cutout on the wiper lip. As a result, the wiper lip can be changed independently of the end piece. However, the end piece can also be firmly connected to the wiper lip, so that it is changed with the wiper lip.The end piece can have a receiving profile which serves to receive the wiper lip and supports it during a wiping movement in the region of the end piece.The holding device can have a wind spoiler. The holding device can have one or more holding bodies which can be formed by extrusion. Depending on the configuration, the spring leaf can be guided through the one or more retaining bodies, so that the required stability is ensured. The holding body can then hold both the spring blade and the wiper lip. This applies accordingly to a plurality of holding bodies.Brief Description of the DrawingsPreferred exemplary embodiments of the invention are explained in more detail in the following description with reference to the attached drawings, in which corresponding elements are provided with corresponding reference numerals. The following are shown: FIG. 1 shows a wiper device, in particular for a motor vehicle, having a holding device and a wiper lip in a schematic, three-dimensional illustration corresponding to a first exemplary embodiment; FIG. 2 shows a wiper lip of the wiper device shown in FIG. 1 in a schematic, three-dimensional illustration corresponding to the first exemplary embodiment; FIG. 3 is the same as in FIG. FIG. 1 shows a schematic, three-dimensional representation corresponding to the first exemplary embodiment, wherein an assembly or disassembly of the wiper lip is illustrated; FIG. 4 shows the holding device and the wiper lip of the wiper device shown in FIG. 1 in a pull-out schematic spatial illustration corresponding to the first exemplary embodiment, wherein the wiper lip is disassembled and a possible fastening of the wiper lip to the holding device is illustrated; FIG. 5 shows an end piece and the wiper lip of the wiper device shown in FIG. 1 in a pull-out schematic spatial sectional illustration corresponding to the first exemplary embodiment, wherein a possible connection between the end piece and the wiper lip is illustrated; FIG. 6 shows the end piece shown in FIG. 5 of the wiping device shown in FIG. 1 in a schematic, spatial sectional illustration; FIG. 7 shows a wiping device according to a second exemplary embodiment in a pull-out schematic spatial illustration, a view obliquely onto a wiping lip of the wiping device being shown; FIG. 8 shows an end piece for the wiper device shown in FIG. 6 in a schematic, spatial illustration corresponding to the second exemplary embodiment from the viewing direction denoted by VIII; FIG. 9 shows the wiper device shown in FIG. 6 in a schematic, three-dimensional illustration corresponding to the second exemplary embodiment, wherein an assembled or inserted state of the wiper lip is shown with the end piece fastened; FIG. 10 shows a wiping device in a partial schematic spatial illustration corresponding to a third exemplary embodiment; FIG. 11 shows the wiper device of the third exemplary embodiment shown in FIG. 10 in an exploded illustration; FIG. 12 shows the wiper device of the third exemplary embodiment shown in FIG. 10 in the mounted state, wherein retaining bodies are not illustrated; FIG. 13 shows a detail of the wiper device of the third exemplary embodiment shown in FIG. 10 at one end during mounting, the holding body not being shown; FIG. 14 shows the detail of the wiper device of the third exemplary embodiment shown in FIG. 13, wherein a connecting piece is mounted and wherein the retaining body is not illustrated; FIG. 15 shows the detail of the wiper device of the third exemplary embodiment shown in FIG. 14, wherein an assembly of an end piece is shown and wherein the retaining body is not shown; FIG. 16 shows the detail of the wiper device of the third exemplary embodiment shown in FIG. 15, the end piece being shown in the mounted state and the holding body being shown; FIG. 17 shows the end piece of the wiper device of the third exemplary embodiment shown in FIGS. 15 and 16 in a schematic, spatial illustration; FIG. 18 shows the wiper device of the third exemplary embodiment during the mounting of a wiper lip, wherein the end piece is not mounted; FIG. 19 shows a detail of the wiping device shown in FIG. 18 in a pull-out schematic spatial illustration corresponding to the third exemplary embodiment in the assembled state from the viewing direction denoted by XIX, wherein one end is shown at the end piece; FIG. 20 shows a detail of the wiping device shown in FIG. 18 in a separate, schematic, spatial representation corresponding to the third exemplary embodiment in the mounted state from the viewing direction denoted by XIX, wherein a further end is shown; FIG. 21 shows an end piece for the wiping device according to a fourth exemplary embodiment in a schematic, spatial illustration; FIG. 22 shows a wiper lip for the wiper device of the fourth exemplary embodiment in a schematic, three-dimensional illustration, wherein the wiper lip can be connected to the end piece shown in FIG. 21 ; and FIG. 23 shows a holding body for the wiper device of the third or fourth exemplary embodiment in a separate schematic illustration.Embodiments of the InventionFIGS. 1 to 6 show in several representations a wiping device 1 according to a first exemplary embodiment. The wiping device 1 can serve in particular for a motor vehicle, FIG. 1 here shows the wiping device 1 in the mounted state.The wiping device 1 has a holding device 2, which is designed as a wiper arm 3 in this exemplary embodiment. The wiper arm 3 comprises a fastening body 4 with a fastening eye 5, on which a fastening to an output shaft of an electric motor is possible.FIG. 2 shows a wiper lip 6 of the wiper device 1 in a schematic, three-dimensional illustration corresponding to a possible configuration. The wiper lip 6 can be mounted and removed in an advantageous manner and can thus be easily replaced, as is also illustrated in FIG. 3.The holding device 2 comprises an elongate holding body 8 extending along a longitudinal extent 7, which body adjoins the fastening body 4. The holding body 8 has a hollow profile 10 open at one end 9. The wiper lip 6 can be inserted into the hollow profile 10 from the open end 9 along the longitudinal extent 7, as is shown in FIG. 3. Accordingly, the wiper lip 6 can be pulled out of the hollow profile 10. This is illustrated by the double arrow 11.The insertion and extraction is made possible by a fastening slot 15 provided on the hollow profile 10. The fastening slot 15 extends along the longitudinal extension 7 through the hollow profile 10. The web 17 of the wiper lip 6 extends through the fastening slot 15 in the inserted state.FIG. 4 shows the holding device 2 and the wiper lip 6, wherein the wiper lip is disassembled. The wiper lip 6 has a wiper lip edge 20. During operation, the wiper lip 6 is guided at its wiper lip edge over a windshield of the motor vehicle for wiping. The pane is not a component of the wiping device 1 here. the fastening slot 15 is formed on a side 21 of the hollow profile 10 facing the wiper lip edge 20 of the wiper lip 6.In the inserted state shown in FIG. 1, the retaining strip 16 of the wiper lip 6 then engages from the inside behind the side 21 of the hollow profile 10 at the fastening slot 15.Furthermore, the wiping device 1 has an end piece 24 which is detachably connected to the holding body 8 or to the open end 9 of the hollow profile 10. The mounted end piece 24 secures the wiper lip 6, so that it remains in the inserted state in the hollow profile 10. The wiping lip 6 can be finished by a user releasing and pulling off the end piece 24. The user can then remove the wiper lip 6 by pulling on the end piece 24.The end piece 24 is connected to the holding body 8 by a locking connection. In a modified embodiment, however, other connections are also conceivable.FIG. 5 illustrates a possible connection between the end piece and the wiper lip. A recess 35 is provided on the retaining strip 16 of the wiper lip 6. In the assembled state, i.e. when the end piece 24 and the wiper lip 6 are connected to one another, the end piece 24 engages in the recess 35 of the retaining strip 16 of the wiper lip 6.In this case, an actuating button 38 of the end piece 24 can latch into a recess 39 (FIG. 4 ) at the open end 9 of the hollow profile 10 when the end piece 24 is mounted. Furthermore, at least one projection 33 on at least one of the longitudinal sides 36, 37 of the wiper lip 6 can engage into grooves 34 of the wiper lip 6 extending along the longitudinal sides 36, 37.In this exemplary embodiment, the cutout 35 of the retaining strip 16 extends from a first longitudinal side 36 of the wiper lip 20 to a second longitudinal side 37 of the wiper lip 6. Furthermore, the end piece 24 has, on a side 42 facing the wiper lip 6, a rib 43 which, in the assembled state, engages in the cutout 35, as is illustrated with reference to FIGS. 5 and 6.FIGS. 7 to 9 show the wiping device 1 according to a second exemplary embodiment. In this case, FIG. 7 shows a view obliquely from below, as seen from the window, onto the wiper lip 6; FIG. 8 shows the end piece 24 from the viewing direction denoted by VIII in FIG. 6. FIG. 9 shows the mounted or inserted state of the wiper lip 6 with the end piece 24 fastened.In this exemplary embodiment, the wiper lip 6 and the end piece 24 are not connected to one another. The wiper lip 6 can be inserted into the fastening slot 15 independently of the end piece 24, as is shown by the arrow 45. End piece 24 may then be mounted as shown by arrow 46. In the mounted state, a certain clearance 47 can remain, so that the wiper blade 6 can be moved back and forth in the fastening slot 15, as is illustrated by the double arrow 48. In a modified embodiment, however, at least no substantial play can remain.FIGS. 10 to 20 show a wiping device 1 according to a third exemplary embodiment. In this case, FIG. 10 shows the wiping device 1 in the assembled state. Two holding bodies 8 can be connected to one another via an adapter 50. A wiper arm can engage on the adapter 50.FIG. 11 shows the wiping device 1 in an exploded illustration. The holding body 8 has a receiving profile 30. Furthermore, the holding device 2 has a spring leaf 31 which extends over the longitudinal extent 7 through the receiving profile 30. The wiping device 1 has a connecting piece 32.The connecting piece 32 is firmly connected to the spring leaf 31, as shown in FIG. 12. As shown in FIGS. 13 and 14, the connector 32 can be fixedly connected to the spring blade 31. The connecting piece 32 can thereby engage in a preferably lateral recess 44 of the spring leaf 31.As shown in FIGS. 15 and 16, the end piece 24 can be detachably connected to the connecting piece 32, for example, via a locking connection. The end piece 24 can thus be provided detachably at the end 9 of the hollow profile 10. The actuating button 38 can be provided on the connecting piece 32, while the recess 39, into which the actuating button 38 engages, is provided on the end piece 24.FIG. 17 shows the end piece 24, wherein the hollow profile 10 continuing into the end piece 24 is shown for receiving the wiper lip 6. FIG. 18 shows the mounting of the wiper lip 6, the end piece 24 not yet being mounted. One end 51 of the wiper lip 6 can then be inserted into the hollow profile 10 at the end piece 24, as is shown in FIG. 19. FIG. 19 shows a detail of the wiping device 1 shown in FIG. 18 in the mounted state from the viewing direction designated XIX.FIG. 20 correspondingly shows a detail of the wiper device 1 at a further end 52 in the mounted state from the viewing direction designated XIX. In this case, an end cap 53 can be provided at the further end 52, into which the hollow profile 10 continues.FIGS. 21 and 22 show a fourth exemplary embodiment of the wiping device 1. FIG. 21 shows an end piece 24. FIG. 22 shows a wiping lip 6.For this purpose, a recess 35 of the holding strip 16 is provided on a longitudinal side 36 of the wiper lip 20. On the end piece 24, a projection 40 is correspondingly formed, which in the assembled state engages in the recess 35 of the retaining strip 16 provided on the longitudinal side 36.FIG. 23 shows a possible embodiment of the holding body 8 for the wiping device 1 of the third or fourth exemplary embodiment in a separate schematic illustration. The spring leaf 31 extends through the receiving profile 30 of the holding body 8.The invention is not limited to the described embodiments.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 198 54 307 A1

[0002]

Claims

Wiper device (1), in particular for a motor vehicle, having a holding device (2) and a wiper lip (6), characterized in that the holding device (2) has at least one elongate holding body (8) which extends along a longitudinal extent (7) and has a hollow profile (10) which is open at one end (9) and into which the wiper lip (6) can be pushed from the open end (9) along the longitudinal extent (7), in that a fastening slot (15) which extends along the longitudinal extent (7) is provided on the hollow profile (10), and in that a web (17) of the wiper lip (6) extends through the fastening slot (15) in the pushed-in state.Wiper device according to Claim 1, characterized in that the wiper lip (6) has a wiper lip edge (20) which is guided over a pane during operation for wiping, and in that the fastening slot (15) is formed on a side (21) of the hollow profile (10) facing the wiper lip edge (20) of the wiper lip (6).Wiper device according to Claim 1 or 2, characterized in that the wiper lip (6) has a retaining strip (16) which is connected to the web (17), and in that the retaining strip (16) of the wiper lip (6) in the pushed-in state engages from the inside behind one side (21) of the hollow profile (10) at the fastening slot (15).Wiper device according to one of Claims 1 to 3, characterized in that an end piece (24) is provided which can be detachably connected at least indirectly to the retaining body (8), and in that the end piece (24) connected to the retaining body (8) secures the wiper lip (6) in the inserted state in the hollow profile (10) against moving out along the longitudinal extent (7).Wiper device according to Claim 4, characterized in that the end piece (24) can be connected at least indirectly to the retaining body (8) by means of a latching connection.Wiper device according to Claim 4 or 5, characterized in that the holding device (2) is designed as a wiper arm (2), in that the holding body (8) of the wiper arm (3) is formed at least substantially by the hollow profile (10), and in that the end piece (24) can be detachably connected to the end (9) of the hollow profile (10).Wiper device according to Claim 4 or 5, characterized in that the at least one retaining body (8) has an at least substantially closed receiving profile (30), in that the retaining device (2) has at least one spring leaf (31) which extends at least substantially over the longitudinal extent (7) through the receiving profile (30), and in that a connecting piece (32), which is preferably fixedly connected to the spring leaf (31), is provided at the end (9) of the hollow profile (10), to which connecting piece the end piece (24) can be detachably connected.Wiper device according to one of Claims 4 to 7, characterized in that the wiper lip (6) has a retaining strip (16) which is connected to the web (17), in that at least one cutout (35) is provided on the retaining strip (16), and in that the end piece (24) engages in the cutout (35) of the retaining strip (16) of the wiper lip (6).Wiper device according to Claim 8, characterized in that a) at least one cutout (35) of the retaining strip (16) is provided on a longitudinal side (36) of the wiper lip (20), and in that a projection (40) is formed on the end piece (24), said projection engaging into the cutout (35) of the retaining strip (16) provided on the longitudinal side (36), and / or b) in that at least one cutout (35) of the retaining strip (16) extends from a first longitudinal side (36) of the wiper lip (20) to a second longitudinal side (37) of the wiper lip (6), and in that a rib (43) is formed on a side (42) of the end piece (24) facing the wiper lip (6), said rib engaging into the cutout (35) extending from the first longitudinal side (36) to the second longitudinal side (37).Wiper device according to one of Claims 4 to 7, characterized in that the wiper lip (6) and the end piece (24) are not connected to one another.

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