DE102007062304B4 - Adapter for a wiper blade for cleaning vehicle windows - Google Patents

Abstract

. Adapter (6, 6a) for a wiper blade (5) for cleaning vehicle windows, the wiper blade (5) having at least one wiper blade body (34) extending in the longitudinal direction of the wiper blade, at least one wiper rubber (9) forming at least one wiper lip (10) on the wiper blade body ( 34) and at least one nozzle or nozzle opening (14) which can be connected via a wiper blade-side fluid connection (28) of a wiper-blade-side fluid connection to a supply system for supplying the cleaning and washing liquid or to a line of this supply system, wherein the The adapter (6, 6a) forms a hinge pin (24) and a first adapter part (19) which can be connected to the wiper blade body (34) and comprises a second adapter part (20) which is connected to the first adapter part (via the hinge pin (24)). 19) can be connected to a wiper arm (1), characterized in that the second adapter part (20) is designed as a fluid connection (28), and that the wen At least one nozzle opening (14) can be flow-connected via a first connecting piece (32, 32a) bridging the hinge pin (24) as a flow channel of the fluid connection on the wiper blade side with the fluid connection (28) formed by the second adapter part (20).

Description

State of the art

The invention relates to an adapter for a wiper blade for cleaning vehicle windows according to the preamble of claim 1.

An adapter for a wiper blade for cleaning vehicle windows according to the preamble of claim 1 is from DE 10 2004 056 835 A1 known. The known adapter is characterized in that it has a first adapter part connected to the wiper blade. On the first adapter part, connecting pieces are arranged laterally on both sides of the wiper blade, which serve for the hydraulic connection with hoses for supplying the wiper blade with washing liquid. The use of two connecting pieces on the first adapter part results in the known wiper blade in that channels for guiding the washer fluid are provided on both sides of the wiper blade and are supplied with the washer fluid as a function of the direction of movement of the wiper blade. The disadvantage here is that the fluid connection with the hoses is arranged on the adapter element carrying the wiper rubber or the wiper blade, which can result in at least a visually disturbing, but also trouble-prone hose routing to the connection piece on the first adapter part.

From the DE 100 00 372 A1 it is also known to provide a fluid connection at an end region of a wiper blade on a terminating piece arranged thereon. The washing liquid is therefore not supplied via the adapter but rather via the end piece. Due to the mobility of the wiper blade about its pivot axis and the relatively large distance of the terminating piece or the fluid connection from the pivot axis, the wiper blade is also relatively complicated or movable
A disadvantageous design with regard to its pivoting option on the wiper arm.

From the DE 10 2005 060 617 A1 it is also known to supply a spray nozzle on the wiper blade via a supply bore,
which is formed in the area of an axis of rotation of the wiper arm about which the wiper blade is pivotably mounted. The wiper blade in turn points to one
Adapter element on the possibility of communicating with an opening in the channel on the axis of rotation of the wiper arm. A relatively complex, machining production of the wiper arm or the wiper blade is required here.

Finally it is from the DE 17 55 188 A known to implement the fluid supply of two nozzles arranged in the area of the wiper blade via a hose line which branches off at the end of a wiper arm. Details regarding the exact design of the branch or whether the hose line in the end area of the wiper arm is designed to be separable at the transition to the wiper blade cannot be found in the application mentioned.

Disclosure of the invention

Based on the prior art shown, the invention is based on the object of developing an adapter for a wiper blade for cleaning vehicle windows according to the preamble of claim 1 in such a way that a hydraulic connection optimized in terms of operational safety is formed in the transition area from the wiper arm to the wiper blade.

According to the invention, this object is achieved with an adapter having the features of claim 1.

Advantageous further developments of the adapter according to the invention are listed in the subclaims.

• 1 in perspektivischer Darstellung den Wischarm einer Wischanlage für Fahrzeugscheiben, beispielsweise Frontscheiben, zusammen mit einem Wischblatt (Nasswischblatt);
• 2 einen Schnitt durch den Wischarm der 1;
• 3 einen Schnitt durch das Wischblatt der 1;
• 4 und 5 in vergrößerter Teildarstellung das Wischblatt zusammen mit einem zur Befestigung am Wischarm dienenden Adapter in Seitenansicht sowie im Schnitt;
• 6 einen Schnitt entsprechend der Linie I - I der 1;
• 7 in perspektivischer Einzeldarstellung den Adapter des Wischblattes;
• 8 in perspektivischer Teildarstellung das Wischblatt im Bereich des Adapters, zusammen mit einer die flexiblen Kanalabschnitte der im Adapter ausgebildeten Flüssigkeitsverbindungen abdeckenden Kappe;
• 9 und 10 Darstellung ähnlich den 5 und 7 bei einer weiteren Ausführungsform des erfindungsgemäßen Wischblattes.

The invention is explained in more detail below with reference to the figures using exemplary embodiments. Show it:

• 1 a perspective view of the wiper arm of a wiper system for vehicle windows, for example front windows, together with a wiper blade (wet wiper blade);
• 2 a section through the wiper arm of 1 ;
• 3 a section through the wiper blade of the 1 ;
• 4th and 5 in an enlarged partial illustration of the wiper blade together with an adapter serving for attachment to the wiper arm in side view and in section;
• 6th a section along the line I - I of 1 ;
• 7th the adapter of the wiper blade in a perspective individual representation;
• 8th in a perspective partial representation, the wiper blade in the area of the adapter, together with a cap covering the flexible channel sections of the fluid connections formed in the adapter;
• 9 and 10 Representation similar to 5 and 7th in a further embodiment of the wiper blade according to the invention.

In the figures, 1 is the wiper arm of a windshield wiper system, for example for the windshield of a road vehicle. The wiper arm consists in a known manner of a bearing element which can be fastened to a wiper shaft of a windshield wiper drive 2 as well as one via a wiper arm joint 3 articulated with the bearing element 2 connected wiper rod 4th on whose the bearing element 2 remote end with an adapter 6th a wiper blade 5 is attached interchangeably. The adapter 6th is for example approximately in the middle of the wiper blade 5 intended.

Like in particular the 3 shows is the wiper blade 5 designed as a flat wiper blade and consists essentially of a profile rail, made for example of plastic, extending over the entire length of the wiper blade 7th with a profile section that extends over the entire length of the wiper blade 5 extending flat strip-like spring rail 8th made of spring steel and on its underside in a C-shaped profile section there, the wiper rubber made of a rubber-elastic material 9 with the wiper lip resting against the vehicle window at least during the wiping operation 10 is held positively. On the profile rail 7th are two strip-like profiles shaped as a spoiler 11 provided, each starting from the adapter 6th Extend to a wiper blade end. In the profiles 11 are two distribution or spray channels 12 and 13th formed, each of which extends on a wiper blade longitudinal side and with a plurality of outlet or nozzle openings 14th is provided for applying the cleaning and washing liquid (for example water, if necessary with cleaning and / or antifreeze additives) to the vehicle window. With M. is in the figures the longitudinal extent of the wiper blade 5 enclosing central plane denotes, for the illustrated embodiment at least the profile rail 7th with the spring rail 8th as well as the squeegee 9 with wiper lip 10 if the wiper blade is not in contact with the vehicle window 5 Is designed mirror-symmetrically.

The supply of the distribution or spray channels 12 and 13th takes place via the adapter 6th , which is designed as a connection piece to which the distribution and spray channels 12 and 13th are connected and which in turn with one on the wiper arm 1 guided hose line 15th a non-illustrated vehicle-side supply system for the cleaning and washing liquid is connected. Like in particular the 2 shows is the hose assembly 15th with two separate channels 16 and 17th formed and for example by means of brackets 18th on the with the wiper arm installed 1 the wiper arm rear facing the vehicle window held.

The adapter 6th consists of two adapter parts 19th and 20th , of which the adapter part 19th roughly in the middle of the wiper blade in one of the profiles 11 unoccupied area on the profile rail 7th is attached, namely this profile rail, for example from the top, rider-like and positively overlapping. The adapter part is on the two long sides of the wiper blade 19th each with a distributor or T-piece 21st and 22nd provided, which in the illustrated embodiment with the adapter part 19th is for example connected by locking or in some other suitable manner molded part. Basically, the connectors 21st and 22nd also in one piece with the adapter part 19th be made. Every connector 21st and 22nd forms a flow channel 23 for the washing and cleaning liquid with a channel section extending in the longitudinal direction of the wiper blade, each of which has a section designed as a connecting piece at both ends 21.1 or. 22.1 of the manifold 21st or. 22nd is open, as well as a duct section which runs perpendicular to this and which is formed on a section designed as a connecting piece 21.2 or. 22.2 of the manifold 21st or. 22nd is open.

On a block-like or web-like bearing section 19.1 of the adapter part 19th is the adapter part 20th the storage section 19.1 Rider-like, articulated across the board. The adapter part has for this purpose 20th a substantially U-shaped cross section consisting of the two on both sides of the bearing section 19.1 arranged and guided on this legs 20.1 and from the one connecting these legs and above the bearing section 19.1 arranged yoke section 20.2 . One the thighs 20.1 as well as the storage section 19.1 penetrating hinge pin 24 connects the two adapter parts 19th and 20th to form an adapter joint in such a way that the adapter part 19th with the part of the wiper blade attached to it 5 by a limited angular range relative to the adapter part 20th is pivotable, about one of the axis of the hinge pin 24 defined pivot axis perpendicular to the central plane M. .

On the adapter part 20th are suitable locking means 25th provided to the adapter part 20th by sliding it onto the free end of the wiper rod 4th to lock on this. Furthermore, the adapter part 20th with two flow channels 26th and 27 formed, each at the transition between a leg 20.1 and the yoke section 20.2 extend along this transition or along a wiper blade longitudinal side. Every flow channel 26th or. 27 opens at one opposite the hinge pin 24 radially offset narrow side of the adapter part 20th into a fluid connection there 28 for connecting the hose line 15th and is in the area of the other opposite the hinge pin 24 radially offset narrow side or in the area of a there, for example by a ball 29 closed channel end at a radially protruding connection piece 30th (Flow channel 26th ) or 31 (flow channel 27 ) open.

The two connecting pieces 30th and 31 are each on one over the relevant narrow side of the adapter part 20th protruding tubular extension 20.3 provided, in such a way that the connecting piece 30th with its opening the opening of the section below 21.1 and the connecting piece 31 with its opening the opening of the section below 22.2 opposite is. The associated sections 21.2 , 22.2 or connecting piece 30th and 31 are each via a flexible connector inside the wiper blade 32 connected to one another, which is designed as a hose with its ends 32.1 and 32.2 on the section 21.2 , 22.2 or the connecting piece 30th and 31 attached by sliding and is bellows-like in its central area, so that over the two connecting pieces 32 not just one that is sealed off from the outside
Fluid connection from the flow channel 26th to the flow channel 23 of the manifold 21st or from the flow channel 27 to the flow channel 23 of the manifold 22nd exists, but also a pivoting of the adapter part 20th relative to the adapter part 19th is possible, without a disruptive, the pivoting movement counteracting, of the connecting pieces 32 exercised moment.

As the figures show, there are those with the connectors 32 realized flexible connections or channel sections on one opposite the hinge pin 24 radially offset narrow side of the adapter 6th to the side of this but within the contour of the thighs 20.1 and the yoke section 20.2 formed adapter outer surface, so that the connecting pieces 32 appear neither optically nor otherwise disruptive.

As the figures also show, the adapter is 6th also mirror-symmetrical to the central plane M. formed, in particular with regard to its adapter parts 19th and 20th on the adapter part 19th provided T-pieces or distributor pieces 21st and 22nd and the connectors 32 .

Every section 21.1 is with a distribution or spray channel 12 and every section 22.1 with a distribution or spray channel 13th connected. Via the fluid connections 28 are the channel 16 the hose line 15th with the flow channel 26th and the channel 17th the hose line 15th with the flow channel 27 connected so that the cleaning and washing liquid through the channels 16 and 17th and about those in the adapter parts 19 and 20 and in the connecting pieces 32 formed separate flow channels and / or - paths the distribution or spray channels 12 and 13th and the nozzle openings there 14th can be supplied individually controlled in each case, for example also in the form that for optimal use of the cleaning and washing liquid during the wiping operation, it is only or preferably from those nozzle openings 14th is applied, which is based on the pivoting movement of the wiper blade 5 leading wiper blade longitudinal side.

To achieve a visually appealing appearance as well as to protect the connecting pieces 32 is a cover cap made of plastic, for example 33 provided, for example, by clipping or locking onto the extensions 20.3 having narrow side of the adapter part 20th can be fastened in such a way that this cover cap 33 the extensions 20.3 as well as the connectors 32 and the one below the connecting piece 30th and 31 provided sections 21.2 and 22.2 at least largely covers, but only to the extent that the desired pivoting movement of the adapter part 20th relative to the adapter part 19th is not disabled.

The profile rail 7th , the spring rail 8th and the profiles 11 together form the wiper blade body (wiper strip), generally designated 34 in the figures, on which the wiper rubber 9 is preferably provided interchangeably. The wiper blade body is at both ends 34 provided with an end cap 35, which in a known manner also includes the elements of the wiper blade body 34 and the squeegee 9 connects with each other and the distribution or spray channels 12 and 13th locks.

The adapter parts 19th and 20th and / or the manifolds 21st and 22nd are for example molded parts made of plastic or another material. The connectors 32 and 32a consist of a soft or highly flexible material, for example EPDM or TPE.

The 9 and 10 show an adapter as a further embodiment 6a that is different from the adapter 6th essentially only differs in that instead of the flexible hose-like connecting pieces 32 with the bellows-like sections 32.3 Connectors 32a are used in the form of flexible hose pieces, which are curved about at least one axis parallel or essentially parallel to the pivot axis of the adapter joint (joint bolt 24 ) are curved in such a way that each connecting piece 32a with the concave side of its curvature the adapter part 20th or the pivot axis of the adapter joint (joint bolt 24 ) is facing. The adapter part 20th points in this embodiment to the extensions 20.3 the connecting pieces 30th and 31 not on, ie the extensions 20.3 serve themselves as connecting pieces of the flow channels open on these extensions 26th and 27 on which the connecting pieces are attached 32a with their upper end pushed open. The lower ends of the connectors 32a are in turn by sliding on the sections 21.2 or. 22.2 attached. Even with the adapter 6a is on the adapter part 20th prefers the cover cap 33 to cover the connecting pieces 32a attached.

The invention was described above using exemplary embodiments. It goes without saying that changes and modifications are possible without departing from the inventive concept on which the invention is based.

For example, it is possible to use the distribution or spray channels 12 and 13th in or on the profile rail 7th to be provided, with this rail then, for example, divided and a part of each narrow side of the adapter 6th or. 6a starting at a wiper blade end, while the spring rail 8th is formed continuously.

It is also possible to use the adapter part 19th or elements of this adapter part 19th integral with the wiper blade body 34 or an element of this wiper blade body 34 to manufacture.

List of reference symbols

1

Wiper arm

2

Bearing element

3

Wiper arm joint

4th

Wiper rod

5

Wiper blade

6, 6a

adapter

7th

Profile rail

8th

Spring rail

9

Squeegee

10

Wiper lip

11

profile

12, 13

Distribution or spray channel

14th

Nozzle opening

15th

Hose line

16, 17

channel

18th

Bracket

19, 20

Adapter part

19.1

Warehouse section

20.1

leg

20.2

Yoke section

20.3

renewal

21, 22

T or distributor piece

21.1,21.2

section

22.1, 22.2

section

23

Flow channel

24

Hinge pin

25th

Locking means

26, 27

Flow channel

28

Fluid connection

29

Bullet

30.31

Connection piece

32, 32a

Connector

32.1, 32.2

The End

32.3

section

33

Cover cap

34

Wiper blade body

M.

Middle plane

Claims (20)

. Adapter (6, 6a) for a wiper blade (5) for cleaning vehicle windows, the wiper blade (5) at least one wiper blade body (34) extending in the longitudinal direction of the wiper blade, at least one wiper rubber (9) forming at least one wiper lip (10) on the wiper blade body ( 34) and at least one nozzle or nozzle opening (14) which can be connected via a wiper blade-side fluid connection (28) of a wiper-blade-side fluid connection to a supply system for supplying the cleaning and washing liquid or to a line of this supply system, wherein the The adapter (6, 6a) forms a hinge pin (24) and a first adapter part (19) which can be connected to the wiper blade body (34) and comprises a second adapter part (20) which is connected to the first adapter part (via the hinge pin (24)). 19) can be connected to a wiper arm (1), characterized in that the second adapter part (20) is designed as a fluid connection (28), and that the we At least one nozzle opening (14) can be connected to the fluid connection (28) formed by the second adapter part (20) via a first connecting piece (32, 32a) bridging the hinge pin (24) as a flow channel of the fluid connection on the wiper blade side. . Adapter Claim 1 , characterized in that the first connecting piece (32, 32a) is formed by a flexible hose-like connecting piece (32, 32a). Adapter Claim 2 , characterized in that the hose-like connecting piece (32, 32a) is designed like a bellows in at least one section (32.3). Adapter Claim 2 or 3 , characterized in that the hose-like connecting piece (32, 32a) is curved. Adapter Claim 4 , characterized in that the flexible connecting piece (32a) is curved about at least one axis parallel or substantially parallel to the axis of the hinge pin (24). Adapter according to one of the Claims 1 to 5 , characterized in that the hose-like connecting piece (32, 32a) is offset radially or approximately radially to the axis of the hinge pin (24). Adapter according to one of the Claims 1 to 6th , characterized in that in the second adapter part (20) at least one second flow channel (26, 27) with the fluid connection (28) is formed, and that the second flow channel (26, 27) via the first connecting piece (32, 32a) is in communication with the at least one nozzle opening (14). Adapter according to one of the Claims 1 to 7th , characterized in that the at least one second flow channel (26, 27) extends in the second adapter part (20) transversely to the axis of the hinge pin (24). Adapter according to one of the Claims 1 to 8th , characterized in that the second flow channel (26, 27) forms the fluid connection (28) at one end and is connected at its other end to the connecting piece (32, 32a) forming the first flow channel. Adapter Claim 9 , characterized in that the second flow channel (26, 27) is provided with a connecting piece (30, 31) or with an extension (20.3) on which the hose-like connecting piece (32, 32a) is attached by sliding it on. Adapter according to one of the Claims 1 to 10 , characterized in that a third flow channel (23) connected to the at least one nozzle opening (14) is formed on the first adapter part (19) which is connected to the fluid via the first flow channel or the flexible connecting piece (32, 32a) forming it. Connection (28) is connected to the second adapter part (20) Adapter according to one of the Claims 1 to 11 , characterized in that the third flow channel (23) is part of a distributor piece (21, 22) provided on the first adapter part (19) or formed in it, to which the first flow channel or the connecting piece (32, 32a) forming it and two distributors - Or spray channels (12, 13) are connected. Adapter according to one of the Claims 2 to 12 , characterized in that sections (21.1, 22.1) are provided on the first adapter part (19) or on the distributor piece (21, 22) there. Adapter according to one of the Claims 1 to 13th , characterized in that to supply at least two nozzle openings (14) or at least two distribution or spray channels (12, 13) provided with several nozzle openings, the wiper blade-side fluid connection is provided twice on two opposite longitudinal sides of the wiper blade. Adapter Claim 14 , characterized in that an independent fluid connection (28) is provided on the second adapter part (20) for each fluid connection on the wiper blade side. Adapter Claim 15 , characterized in that a common fluid connection (28) is provided on the second adapter part (20) for both fluid connections on the wiper blade side. Adapter according to one of the Claims 1 to 16 , characterized in that at least the adapter (6, 6a) is designed mirror-symmetrically, at least with respect to the fluid connections, to a central plane (M) running transversely to the axis of the hinge pin (24). Adapter according to one of the Claims 1 to 17th , characterized in that the at least one connecting piece (32, 32a) forming the first flow channel is arranged outside the adapter parts (19, 20). Adapter according to one of the preceding Claims 1 to 18th , characterized in that a cover is provided for covering the at least one connecting piece (32, 32a). Adapter according to one of the Claims 1 to 19th , characterized in that the at least one connecting piece (32, 32a) is made of an elastic plastic.

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