Windshield wiper blade, especially for vehicles

Abstract

Title: Windshield wiper blade, particularly for a vehicle. Windshield wiper blade, particularly for a motor vehicle, comprising at least one distributor element (34) having at least one windshield washer fluid supply channel (37) and a first rinsing bar (16) for distributing windshield washer fluid, wiper blade characterized in that the supply channel (37) has a first supply segment (38) for the first rinsing bar (16) and a second supply segment (42) for a second rinsing bar (18) and at least one reduction in the second supply segment (42). Figure 3

Description

Title of the invention: Windshield wiper blade, particularly for vehicles. FIELD OF THE INVENTION

[0001] The present invention relates to a windshield wiper blade for a motor vehicle comprising a distributor element with a windshield washer fluid supply channel and a first rinsing wand for distributing windshield washer fluid. PRIOR TECHNOLOGY

[0002] Multiple forms of vehicle wiper blades are already known, for example, according to document DE 10 2018 200316 Al which corresponds to the above description.

[0003] PURPOSE OF THE INVENTION

[0004] The present invention aims to improve such wiper blades from the point of view of wiping result and efficiency.

[0005] DESCRIPTION AND ADVANTAGES OF THE INVENTION

[0006] For this purpose, the invention relates to a windshield wiper blade, in particular for a motor vehicle, comprising at least one distribution element having at least one windshield washer fluid supply channel and a first rinsing wand for distributing windshield washer fluid, windshield wiper blade characterized in that the supply channel has a first supply segment for the first rinsing wand and a second supply segment for a second rinsing wand and at least one reduction in the second supply segment.

[0007] The windshield wiper blade according to the invention has the advantage of improving the cleaning result without increasing the consumption of windshield washer fluid.

[0008] According to another feature, the second feed segment includes at least one nozzle for connection with the second rinsing wand, and this nozzle has a reduction. This results in a simple and advantageous embodiment of this feed segment.

[0009] Furthermore, in a simple and therefore advantageous embodiment, the second supply segment includes at least one nozzle for connection with the second rinsing wand and the reduction is in the nozzle.

[0010] Advantageously, the second feed segment has at least per segment a smaller passage than the first feed segment, which is particularly efficient.

[0011] An advantageous cleaning result will be obtained if the first rinsing wand and / or the second rinsing wand extend according to the longitudinal extension of the wiper blade and each has at least one spray orifice.

[0012] In a particularly advantageous manner, the first rinsing wand extends from the distributing element towards the first end of the longitudinal extension and the second rinsing wand extends from the distributing element towards the other end of the longitudinal extension.

[0013] In a particularly advantageous way, the side of the inner circle along the longitudinal extension includes the second rinsing rod.

[0014] Advantageously, the rinsing wand has a channel with several spray orifices, which allows for a regular distribution of the windshield washer fluid on the window to be cleaned.

[0015] In a simple, economical and advantageous way, the rinsing wand is made in one piece with the deflector blade.

[0016] The distribution element is made in at least two parts and at least one part is made of plastic, in particular in the form of an injected part, which results in a simple and thus advantageous distribution element. Brief description of the drawings

[0017] The present invention will be described in more detail below with reference to an embodiment of a windshield wiper blade according to the invention shown in the accompanying drawings in which:

[0018] [Fig-1] Schematic side view of a windshield wiper blade according to the invention,

[0019] [Fig.2] view in the installed state of the windshield wiper blade according to the invention,

[0020] [Fig.3] view of the area of ​​the wiper blade's distributing element according to the invention, and

[0021] [Fig.4] Detail of the distributor element and the wiper blade rinsing strips according to the invention.

[0022] DESCRIPTION OF EMBODIMENT METHODS OF THE INVENTION

[0023] Fig. 1 shows a windshield wiper blade 10 according to the invention in a schematic side view.

[0024] The wiper blade 10 according to the invention comprises a wiping blade 12 having a length L. The wiping blade 12 is held by a support 14 which, like the wiping blade 12, extends practically over the entire longitudinal extension L of the wiper blade 10.

[0025] The support 14 is further provided with a first rinsing wand 16 and a second rinsing wand 18 for applying windshield washer fluid to the windshield to be wiped during operation.

[0026] According to the longitudinal extension L of the wiper blade 10, between a first end 20 and a second end 22 which terminate the longitudinal extension L of the wiper blade 10, approximately in the middle there is an adapter 24 by which the wiper blade 10 is attached to the wiper arm 28 ([Fig.2]).

[0027] The support 14 further comprises a deflector blade 26. The wiping blade 12, the adapter 24, and the deflector blade 26 are thus fixed to an elastic rail which is made practically of a curved steel strip in its relaxed state and which is coated with a layer of plastic or varnish. The curvature of the steel strip is such that, in the installed state, the wiping blade 12 applies itself to a curved window by being pressed along practically its entire longitudinal extension L against the window to be wiped.

[0028] Figure 2 schematically shows the wiper blade 10 in its installed state. The wiper blade 10 is attached to the wiper arm 28 by the adapter 24. During operation, the wiper arm 28 swings like a pendulum, causing the wiper blade 10 to travel along a portion of a circular ring that forms the wiping area 30. This results in an outer circle AK and an inner circle IK defining the wiping area 30; the area swept by the first end 20 of the wiper blade 10 corresponds to the outer circle AK, and the area swept by the second end 22 of the wiper blade 10 corresponds to the inner circle IK. The pendulum motion during operation means that the radius of the inner circle IK is naturally much smaller than the radius of the outer circle AK.It follows that the path traveled by the first endpoint 20 corresponding to the outer circle AK is greater than the path of the inner circle IK traveled by the second endpoint 22.

[0029] The first rinsing wand 16 is tubular in shape and extends from the adapter 24 towards the first end 20 of the wiper blade 10. The second rinsing wand 18 is also tubular in shape and extends from the adapter 24 towards the second end 22 of the wiper blade 10.

[0030] Thus, according to the longitudinal extension L of the wiper blade 10, the first rinsing wand 16 is located on the side of the outer circle AK and the second rinsing wand 18 is located on the side of the inner circle IK.

[0031] Both the first rinsing wand 16 and the second rinsing wand 18 each have at least one and here several spray orifices 32 ([Fig.3]) through which the windshield washer fluid supplied by valve elements 34 of the adapter 24 ([Fig.3]) to the first rinsing wand 16 and to the second rinsing wand 18 is thus distributed in the wiping area 30.

[0032] The second rinsing wand 18 or the spray orifices 32 of the second rinsing wand 18 thus supply the area facing the inner circle IK according to the longitudinal extension L of the wiper blade 10 with windshield washer fluid.

[0033] The first rinsing wand 16 or the spray orifices 32 of the first rinsing wand 16 are thus provided to supply windshield washer fluid to the area according to the longitudinal extension L of the wiper blade 10 and which is turned towards the outer circle AK.

[0034] According to a variant of the invention, there may be only two spray orifices 32 here. One of the spray orifices 32 will in this case be in the area of ​​the first end 20 and the other spray orifice 32 will be in the area of ​​the second end 22 of the wiper blade 10.

[0035] If the two spray orifices 32 are located in the area of ​​the first end 20 and in the area of ​​the second end 22 of the wiper blade 10, these orifices will be able to spray at least partially in the direction of the adapter 24, so that during operation, the wiping area 30 will be wetted primarily along the entire longitudinal extension L with windshield washer fluid. The expression "at least partially" means in this context that at least one component of the average spray direction will be in the corresponding direction in the direction of the adapter 24.

[0036] According to another embodiment, the first rinsing wand 16 and / or the second rinsing wand 18 are provided with spray orifices 32 also at the adapter 24. The spray orifices 32 of the first rinsing wand 16 thus distribute rinsing fluid, in this case at least partly, towards the first end 20 of the wiper blade 10; the spray orifices 32 of the second rinsing wand 18 thus spray windshield washer fluid at least partly towards the second end 22 of the wiper blade 10. The expression "at least partly" means in this context that at least one directional component of the average spray direction in the corresponding direction is oriented towards the first end 20 or the second end 22.

[0037] Fig. 3 is a longitudinal section of a distributing element 34 provided in the adapter 24 and of the first rinsing wand 16 and the second rinsing wand 18 adjacent.

[0038] The first rinsing wand 16 and the second rinsing wand 18 are thus integrated into the deflector blade 26. The first rinsing wand 16 and the second rinsing wand 18 are, under these conditions, made in one piece with the deflector blade 26 which is in two parts.

[0039] The deflector blade 26 is made of a one- or multi-component plastic material, in particular manufactured by extrusion. The spray holes 32 are made by laser drilling and thus all have the same diameter.

[0040] The diameter of the spray orifices 32 is here less than 1 mm, in particular less than 0.5 mm and preferably on the order of 0.3 mm.

[0041] The distributing element 34 has an inlet 36 which is located substantially in the middle of the longitudinal extension L of the distributing element 34. The windshield washer fluid arrives in a supply channel 37 through this inlet 36.

[0042] The supply channel 37 of the distributing element 34 has a first supply segment 38 which conducts the windshield washer fluid from the inlet 36 towards the first rinsing slat 16. For this connection, the first supply segment 38 has at its end a first nozzle 40 in the form of a tubular segment engaged in the first rinsing slat 16.

[0043] The distribution element 34 further comprises a second supply segment 42 which conducts the windshield washer fluid from the inlet 36 towards the second rinsing wand 18. For the connection, this second supply segment 42 has at its end a second nozzle 44 in the form of a tubular segment engaged in the second rinsing wand 18.

[0044] To improve the connection, the first nozzle 40 and the second nozzle 44 have radial reinforcement at their ends, depending on their longitudinal extension. If the first rinsing rod 16 and / or the second rinsing rod 18 are made of elastomer, for example, rubber, this will provide a firm grip on the first nozzle 40 or the second nozzle 44.

[0045] The first nozzle 40 of the distributing element 34 is hollow inside, which forms a channel through which the windshield washer fluid from the inlet 36 arrives in the first rinsing wand 16. The channel of the first nozzle 40 which is part of the first supply segment 38 has a first section Ql.

[0046] The second nozzle 40 of the distributing element 34 is also hollow so as to form a channel through which the windshield washer fluid arriving from the inlet 36 can supply the second rinsing wand 18. The channel of the second nozzle 44 which is part of the second supply segment 42 has a second section Q2.

[0047] The second section Q2 is slightly smaller than the first section Q1 so that the second rinsing wand receives less windshield washer fluid than the first rinsing wand 16. Because of this smaller second section Q2, there is thus a narrowing of the channel in the second supply segment 42.

[0048] Both the first rinsing wand 16 and the second rinsing wand 18 have spray orifices 32 through which the windshield washer fluid exits the first rinsing wand 16 or the second rinsing wand 18 into the wiping zone 30. The rinsing orifices 32 are substantially identical and have practically the same cross-section. In an alternative embodiment of the invention, the spray orifices 32 may also have a different cross-section.

[0049] Figure 4 is the same cross-sectional view as Figure 3 of a variant of the invention; however, for clarity of the drawing, adapter 24 has not been shown. so that only the distributing element 34 is shown with the first rinsing wand 16 and the second rinsing wand 18.

[0050] To avoid repetition, the description will only address the differences compared to [Fig. 3]. The explanations given for [Fig. 3] thus apply correspondingly to this embodiment.

[0051] The first feed segment 38 of the feed channel 37 has, in the vicinity of the inlet 36, the first section Q1, and correspondingly, the second feed segment 42 has the section Q2. The narrowing thus results from the fact that the cross-section of the feed channel 37 of the second feed segment 42, i.e., the second section Q2, is narrowed. In a feed channel 37 with a substantially rectangular cross-section, this is achieved by a substantially greater wall thickness. The second feed segment 42 is therefore substantially narrower than the first feed segment 38.

[0052] In addition, the internal section of the second nozzle 44 may, where appropriate, have a section smaller than that of the first nozzle 38.

[0053] In both embodiments, the reduction of the supply channel 37, which here is in the second supply segment 42, is located on the side according to the longitudinal extension L of the wiper blade 10, which, in the installed state, is turned towards the inner circle.

[0054] During operation, when the rinsing program is started, the windshield washer fluid passes through the inlet 36 into the supply channel 37 of the distributor element 34. The cleaning fluid arrives in the first supply segment 38 and in the second supply segment 42 of the supply channel 37. The narrowing in the second supply channel 42 means that less windshield washer fluid arrives in the second rinse wand 18 than in the first rinse wand 16. As the second rinse wand 18 is closer to the second end 22 of the wiper blade 10 and thus closer to the inner circle IK than the first rinse wand 16, less windshield washer fluid arrives on the side of the inner circle IK on the wiping area 30 of the windshield to be wiped than on the side of the outer circle AK.

[0055] Due to the narrowing in the distributing element 34, the flow of rinsing fluid is reduced on the side of the longitudinal extension L of the wiper blade 10 which, in the installed state, is turned towards the inner circle IK.

[0056] The distribution element 34 is made by injection molding of plastic material and comprises at least two parts. For example, it may be a basic element with the feed channel 37 and which is closed with a cover by a connection based on shape, force or material.

[0057] According to one embodiment of the invention, the reduction in the direction of the windshield washer fluid flow is located just before the first orifice 32. The distributing element 34 comprises, in this case, compared to the embodiment examples in Figures 3 and 4, the portion of the second rinsing wand 18 up to the first orifice 32. In other words, the second rinsing wand 18 thus begins at the first orifice 32 and extends to the second end 22 of the windshield wiper blade 10.

[0058] NOMENCLATURE OF MAIN ELEMENTS

[0059] 10 Windshield wiper blade

[0060] 12 Wiping blade

[0061] 14 Support / adapter

[0062] 16 First rinsing wand

[0063] 18 Second rinsing wand

[0064] 20 First end of the wiper blade

[0065] 22 Second end of the wiper blade

[0066] 24 Adapter

[0067] 26 Deflector blade

[0068] 28 Windshield wiper arm

[0069] 30 Wiping area

[0070] 32 Spray nozzle

[0071] 34 Distribution element

[0072] 36 Entry

[0073] 37 Supply channel

[0074] 38 Power supply segment

[0075] 40 First tip

[0076] 42 Second power supply segment

[0077] 44 Second nozzle

[0078] AK Outer circle of the wiping area

[0079] IK Inner circle of the wiping area

[0080] Longitudinal extension of the windshield wiper blade

[0081] Q1 First section

[0082] S2 Second section

Claims

Demands

1. Windscreen wiper blade (10) particularly for a motor vehicle comprising at least one distributor element (34) having at least one windscreen washer fluid supply channel (37) and a first rinsing slat (16) for distributing windscreen washer fluid, windscreen wiper blade, the supply channel (37) having a first supply segment (38) for the first rinsing slat (16) and a second supply segment (42) for a second rinsing slat (18) and at least one reduction in the second supply segment (42), characterized in that the reduction in the second supply channel (42) causes less windscreen washer fluid to reach the second rinsing slat (18) than the first rinsing slat (16).

2. Wiper blade (10) according to claim 1, characterized in that the distributing element (34) is provided in the adapter (24) provided for connection with the wiper arm (28).

3. Wiper blade (10) according to any one of the preceding claims, characterized in that the second supply segment (42) has at least one nozzle (44) for connection with the second rinsing wand (18) and the reduction is in the nozzle (44).

4. Wiper blade (10) according to any one of the preceding claims, characterized in that the second supply segment (18) has at least by segments a smaller passage section than the first supply segment (16).

5. Wiper blade (10) according to any one of the preceding claims, characterized in that at least the first rinsing wand (16) and / or the second rinsing wand (18) pass along the longitudinal extension (L) of the wiper blade (10) and have at least one spray orifice (32).

6. Windscreen wiper blade (10) according to claim 5, characterized in that the first rinsing wand (16), starting from the distributing element (34) extends towards a first end of the longitudinal extension (L) and the second rinsing wand (18), starting from the distributing element (34) extends towards the other end of the longitudinal extension (L).

7. Wiper blade (10) according to any one of the preceding claims, characterized in that it has an inner circle side (IK) along the longitudinal extension (L) and the second rinsing wand (18) is on the inner circle side (IK).

8. Wiper blade (10) according to any one of the preceding claims, characterized in that the first and / or second rinsing wand (16, 18) have a channel with several spray orifices (32).

9. Wiper blade (10) according to any one of the preceding claims, characterized in that the first and / or second rinsing strips (16, 18) are made in one piece with a deflector blade (26).

10. Wiper blade (10) according to any one of the preceding claims, characterized in that the distribution element (34) is at least in two parts and at least one part is made of plastic material, in particular in the form of an injected part.

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