WO2023208830A1

WO2023208830A1 - Component for a motor vehicle wiper system and associated wiper system

Info

Publication number: WO2023208830A1
Application number: PCT/EP2023/060625
Authority: WO
Inventors: Stéphane HOUSSAT; Vincent Gaucher
Original assignee: Valeo Systèmes d'Essuyage
Priority date: 2022-04-28
Filing date: 2023-04-24
Publication date: 2023-11-02
Also published as: FR3135041A1

Abstract

The invention relates to a component for a wiper system, in particular of a motor vehicle, configured to be rigidly connected to an arm of the wiper system, for example an arm for driving a blade of the wiper system, the component (1) comprising at least one air flow channel (2) provided with an air inlet and an air outlet, the air inlet comprising an air inlet opening into the at least one air flow channel (2) and a part for guiding air into the opening, the guiding part having a ramp (7) for feeding air into the opening.

Description

PART FOR MOTOR VEHICLE WIPING SYSTEM AND ASSOCIATED WIPING SYSTEM

Technical area

[0001] The invention relates to a wiping system, in particular for a motor vehicle.

Prior art

[0002] Nowadays, it is known to equip at least one glazed surface of the motor vehicle, such as for example the windshield of the vehicle, with a wiping system, in particular to evacuate rainwater of the glazed surface or to clean said glazed surface.

[0003] The wiper blade is rotated on the glazed surface via a drive arm set in motion by a drive motor along a sweeping pattern. The sweeping outline is defined in particular by two limit positions of the wiper blade on the glass surface.

[0004] A first position, or initial position, generally called “fixed stop”, corresponds to a rest position of the wiper blade. Depending on the vehicle, this can be along the hood, that is to say in a substantially horizontal position relative to the glass surface, or along a side pillar, that is to say in a substantially vertical position relative to the glass surface.

[0005] A second position, or final position, generally called "opposite fixed stop", corresponds to an active position in which the wiper blade changes direction of rotation to return to the initial position. Depending on the vehicle, this can be along a side pillar, that is to say in a substantially vertical position relative to the glass surface, or along the hood, that is to say in a substantially horizontal position relative to the glass surface.

[0006] Along its sweeping outline, the wiping blade follows a rotational movement at the end of the drive arm between the fixed stop position and the opposite fixed stop position in order to evacuate the water and/or dirt present on the glass surface and which may hinder the visibility of the driver of the vehicle. [0007] However, in the event of heavy rain or when cleaning the glass surface, the quantity of water to be evacuated may exceed the evacuation capacity of the wiping system, which then inevitably hinders the vision of the front passengers of the vehicle. vehicle, and specifically the driver, and can then produce driving difficulties.

[0008] In particular, it happens that a layer of water forms at the rear of the broom during the movement of the broom in operation. This defect is recurring, particularly at speeds below 130 km/h, and can affect a regulatory zone of the windshield corresponding to the driver's so-called head-up vision zone.

[0009] The water blade is due to an aerodynamic depression forming at the rear of the blade near the windshield pillar, in the opposite fixed stop position. This depression creates a physical effect under the English term “Water Pull Back”, which corresponds to a suction of water on the surface of the window created by the broom. The wiped water returns in a "tongue of water" on the driver's visibility zone of the windshield, mainly following the rear of the blade, which of course can represent a danger for the occupants of the vehicle.

[0010] The aim of the present invention is to at least partially remedy these drawbacks.

Presentation of the invention

[0011] To this end, the subject of the invention is a part for a wiping system, in particular of a motor vehicle, shaped to be integral with an arm of said wiping system, for example a drive arm of a blade of said wiping system, the part comprising at least one air circulation channel provided with an air inlet and an air outlet, the air inlet comprising an orifice air inlet in said at least one air circulation channel and an air guide part in said orifice, the guide part comprising an air supply ramp in said orifice.

[0012] Thus, the wiping system comprising the part according to the present invention tends to repel the water present on the windshield towards one of its uprights, thus reducing the phenomenon of water suction . Which guarantees optimal driver vision, even in heavy rain or when cleaning the windshield.

[0013] According to another aspect, the air supply ramp forming the air guiding part of the air inlet is arranged at the level of the exterior surface of an upper wall of the room. Thus the air intake ramp is directly in contact with the aerodynamic air flows when the vehicle is in operation.

[0014] According to another aspect, the air supply ramp extends from a first end, called the free end, to a second end secured to a wall delimiting the air inlet orifice , called the inlet end, a slope of the air supply ramp preferably being downward from said free end towards the inlet end, in the service position of the part in the wiping system.

[0015] By service position we mean the position of the part installed in the wiping system, itself preferably fitted to a motor vehicle.

[0016] According to another aspect, the air supply ramp is configured in such a way that it allows the air flow passing over it to enter the air circulation channel via the orifice air inlet.

According to another aspect, the air supply ramp has a divergent shape from the free end towards the inlet end.

[0018] According to another aspect, the guide part comprises two opposite walls extending between the free and inlet ends on either side of the air supply ramp, each of the opposite walls forming an angle not zero with said ramp.

[0019] According to another aspect, the angle between each of said walls and the ramp is of the order of 90°.

According to another aspect, the slope of the air supply ramp (measured relative to the horizontal) is between 2° and 10°, preferably between 5° and 7°.

According to another aspect, the air supply ramp is configured to form an air intake having low drag. Thus the air flow passing over the air supply ramp is sucked into the air circulation channel via the air inlet port. [0022] According to another aspect, the air circulation channel extends in the longitudinal extension of the air supply ramp, from the air inlet orifice to the outlet of air, inside the room. The air flow channel is configured to face at least partially the drive arm.

[0023] According to another aspect, the air circulation channel is delimited by at least the interior surface of the upper wall making up the part.

According to another aspect, the air circulation channel is delimited by at least two upper walls making up the part. The upper walls are substantially parallel to each other.

[0025] According to another aspect, the air circulation channel is delimited by said at least two upper walls and at least one side wall making up the part.

[0026] According to another aspect, the air outlet is arranged laterally so that, in the service position of the part in the wiping system, the air coming from the part is directed against the windshield of the vehicle .

[0027] According to another aspect, the air outlet is configured to allow the air flow having passed through the air circulation channel to escape from the latter to the windshield in order to reduce the phenomenon water suction by the broom at the level of the side upright of the broom and at the rear of the broom.

According to another aspect, the part includes a housing for receiving the arm of the wiping system, a wall of which also delimits the air outlet.

According to another aspect, the air outlet is arranged laterally to the arm receiving housing and is configured to face the windshield.

According to another aspect, the air outlet is delimited by at least two side walls making up the part, one of them is the wall of the arm receiving housing. The two side walls are substantially parallel to each other.

[0031] According to another aspect, the arm receiving housing comprises the wall which delimits the air outlet and a portion of the side wall which delimits the air circulation channel, these wall and wall portion are connected between them by one of the two upper walls which delimit the air circulation channel so as to form an inverted U-shaped profile configured to receive and fix the drive arm. In other words, said portion of side wall and wall are substantially of the same dimension and substantially parallel.

[0033] According to another aspect, the part comprises at least two air circulation channels, each of the channels being provided with an air inlet and an air outlet, the air inlet comprising a orifice and an air guiding part in said orifice, the guiding part comprising an air supply ramp in said orifice.

[0034] According to another aspect, the part comprises at least three air circulation channels, each of the channels being provided with an air inlet and an air outlet, the air inlet comprising a orifice and an air guiding part in said orifice, the guiding part comprising an air supply ramp in said orifice.

[0035] According to another aspect, the part comprises a compartment for passing a liquid fluid.

According to another aspect, the compartment for passing a liquid fluid takes the form of a gutter configured to receive a liquid fluid supply pipe.

[0037] Alternatively, the compartment for passing a liquid fluid takes the form of a fluidically sealed channel configured to store and transport the liquid fluid to a liquid fluid spraying device.

[0038] According to another aspect, the part comprises a free end shaped to be connected to said drive arm of the wiping system.

[0039] According to another aspect, the part is attached to the arm. It covers at least one free terminal end of the arm. The free terminal end of the arm can be for example a rod or a cap crimped on a rod or any other free end of an arm known in the field of wiping systems.

[0040] This is particularly advantageous because it is in this zone that the suction phenomenon is the greatest.

[0041] According to another aspect, the part covers the entire arm. Thus, the suction phenomenon is limited or even canceled over a greater length.

[0042] Alternatively, the part is in one piece with the arm. [0043] The invention also relates to an arm for a wiping system, preferably of a motor vehicle, said arm being shaped to drive a wiping blade of the wiping system and comprising a part as described previously.

[0044] The invention also relates to a wiper system, in particular for a motor vehicle, comprising a wiper blade and a blade drive arm, and a part as described above, integral with said wiper arm. training.

The wiper blade is connected to the drive arm in a pivoting manner relative to each other by means of a connection device.

[0046] According to another aspect, the part is oriented in the wiping system so that each air outlet is arranged at the rear of the wiping system, the air coming from each air outlet heading towards backwards against the windshield of the motor vehicle.

[0047] According to another aspect, the part is secured to the drive arm of the wiper blade, preferably by vertical or lateral clipping to the drive arm.

[0048] According to another aspect, the wiping system comprises a yoke secured to the drive arm and the part is fixed to said yoke of the drive arm.

Brief description of the drawings

Other characteristics, details and advantages of the invention will appear on reading the detailed description below, and on analyzing the appended drawings, in which:

[0050] [Fig. 1] schematically illustrates a wiping system that can be equipped with a part according to the present invention;

[0051] [Fig. 2] schematically illustrates the wiping system of Figure 1 when it is installed on a motor vehicle windshield; [0052] [Fig. 3] schematically illustrates a top view of an arm of a wiping system carrying the part according to the present invention equipped with three air intakes according to the present invention;

[0053] [Fig. 4] and [Fig. 5] schematically illustrate a perspective view of an air intake according to another embodiment of the present invention;

[0054] [Fig. 6] schematically illustrates a cross-sectional view of the system of Figure 3; And

[0055] [Fig. 7] schematically illustrates a cross-sectional view of an alternative embodiment.

Description of embodiments

As illustrated in the figures, the present invention relates to a part, referenced 1, for a wiping system of a motor vehicle, as well as the associated wiping system 100. Part 1 is also called cowling.

[0057] The wiping system 100 is designed to equip a glazed surface of the motor vehicle, such as a windshield, referenced PB in FIG. 2. The wiping system 100 comprises a pivotally mounted wiping blade 101 at the end of a drive arm 102, by means of a connection device (not shown), the arm being configured to perform a back and forth rotational movement along and above the glazed surface .

[0058] In Figures 1 and 2, an orthonormal reference mark (x, y, z) is shown in order to simplify the description in space of the wiping system 100. However, this reference mark is given for illustrative purposes only and is of course not limiting to the invention.

[0059] In Figures 1 and 2, the x direction corresponds to a transverse direction of the motor vehicle, the y direction to a longitudinal direction and the z direction to a vertical direction.

[0060] Note that the rear or front designations are assessed in relation to the point of attachment of the broom to the arm, the rear designation corresponding to the part where the arm and a half-broom extend. [0061] We also note that the directions referenced as upper or lower correspond to orientations parallel to the vertical direction of the blade, the lower denomination containing the plane of the glazed surface.

[0062] In Figure 1, the wiper blade 101 extends along a longitudinal axis L parallel to the direction x. The broom 101 comprises a wiping blade 105, a bending member 106, also called a vertebra, and two end tips 107 respectively arranged at each of the longitudinal ends of the wiping blade 101. The bending member 106 takes the form of a single strip, or several strips, of longitudinal extension along the axis L.

[0063] The wiping blade 105 is in direct contact with the glass surface. The wiping blade 105 and the bending member 106 collectively form a semi-rigid assembly 109 which is carried by the connection device (not shown) interposed between the drive arm 102 and said semi-rigid assembly 109. The connection device ensures a mechanical connection between the end part of the drive arm 102 and the wiper blade 101. The connection device makes it possible to securely and detachably fix the wiper blade 101 of the drive arm 2, with a view to possible replacement of the wiper blade 101.

[0064] In a non-limiting example of the invention, the end part of the drive arm comprises a yoke 104, the yoke being either an attached part or in one piece with the arm. In the example illustrated, the yoke is a part attached to the arm, for example crimped onto the arm.

[0065] The drive arm 102 of the wiper blade 101 is motorized and makes it possible to generate a back-and-forth rotational movement of said wiper blade 1. In other words, the drive arm is intended to be driven by a motor so that the broom associated with the drive arm follows an angular back-and-forth movement, which makes it possible to evacuate water and possibly other unwanted elements covering the glass surface to be wiped . The wiper blade 1 then moves between a first position, called the fixed stop position, and a second position, called the opposite fixed stop position.

The fixed stopping position, referenced AF in Figure 2, also called initial position, corresponds to a rest position of the wiper blade. According to vehicle, this can be along the hood, that is to say in a substantially horizontal position relative to the glass surface (the blade extending along the direction x), or else along a lateral upright, that is to say in a substantially vertical position relative to the glazed surface (the blade extending along the z direction). In Figure 2, the fixed stop position AF is horizontal.

[0067] The opposite fixed stop position, referenced OAF in Figure 2, corresponds to an active position in which the wiper blade changes direction of rotation to return to the initial position. Depending on the vehicle, this can be along a side pillar, that is to say in a substantially vertical position relative to the glass surface, or along the hood, that is to say in a substantially horizontal position relative to the glass surface. In Figure 2, the opposite fixed stop position OAF is chosen vertical, the wiper blades 101 being close to the uprights M of the vehicle.

[0068] Note that the invention makes it possible to reduce an aerodynamic depression effect forming at the rear of the blade - arm/broom near the windshield pillar, in the opposite position fixed stop OAF, in the systems of wiping of the prior art. This depression creates a physical effect known by the English term “Water Pull Back”, which corresponds to a suction of water onto the surface of the window. The wiped water returns in a "tongue of water" on the driver's visibility zone of the windshield, mainly following the rear of the blade, which of course can represent a danger that the invention makes it possible to eliminate.

[0069] In the embodiment of Figure 3, the drive arm 102 comprises a rod 111 which extends between a first end 112 and a second end 113. In a particular embodiment, a pipe 114, arranged near the first end 112, will be detailed later. The end 113 is the end on which the yoke 104 of the drive arm 102 is fixed and is shaped to be connected with the brush 101 by means of a connection device, not illustrated, via the yoke 104. The connection device comprises, in a known manner, a mechanical connector carried by the brush and an adapter secured to the yoke of the arm (not illustrated).

[0070] The end 112 is the end of the drive arm 102 configured to be connected to the motor. [0071] As is also apparent from Figure 3, a single part 1 is mounted on the rod 111 of the drive arm 102. Of course, the invention is not limited to this arrangement, and several parts 1 can be mounted on the rod 111 and/or on the yoke 104.

[0072] The part 1 comprises a part body which covers at least partly an upper part of the drive arm 102 and the yoke 104. In Figure 3, the part 1 has a length substantially equal to half the length of the rod 111, and extends between the middle of the rod 111 and the end 113 of the rod 111. According to an alternative, part 1 covers the entire drive arm, including the yoke.

[0073] We now describe part 1 in detail. The part 1 or cover 1 is shaped to be integral with the drive arm 102, so as to avoid any formation of a blade of water which would tend to form at the rear of the wiping blade 101, during the movement of the drive arm 102, between the two fixed stop and opposite fixed stop positions, and in particular in the opposite fixed stop position. As a result, the “water pull back” effect is drastically reduced or even canceled, as will be detailed later.

[0074] In Figures 3, 6 and 7, part 1 is mounted on the drive arm 102. Part 1 comprises a first side wall 12 and a second side wall 19 connected together by a first upper wall 18 of so that the first and second side walls and the first upper wall form a first inverted U-shaped profile and form a housing for receiving the arm. The arm receiving housing is configured to receive and fix the drive arm by means of retaining devices (not shown) cooperating with the drive arm 102. The profile of the drive arm 102 can have a rectilinear longitudinal shape possibly comprising evolving shapes in different directions, in particular vertical, lateral, and/or rotating, along the longitudinal axis. The evolving shapes can be of the apique, arching or even twisting type.

[0075] Part 1 and its housing for receiving arm 12 follow this particular geometry for each drive arm. [0076] As particularly visible in Figures 3 to 5, the part 1 comprises at least one air circulation channel 2, otherwise called internal channel, provided with an air inlet 3 and an air outlet 4, shown in Figures 6 and 7. The air inlet 3 is preferably a NACA type air intake, for “National Advisory Committee for Aeronautics”. Air flow F enters room 1 through air inlet 3 and circulates in internal channel 2 to air outlet 4.

[0077] As can be seen from Figures 3, 6 and 7, the part 1 comprises a third side wall 17 connected to the first side wall 16 by a second upper wall 15. The first side wall forms the front side wall, the second wall side wall forms the intermediate side wall and the third side wall forms the rear wall. The third side wall is substantially parallel to the first and second side walls, and the second upper wall 15 is substantially parallel to the first upper wall 18. The first and third side walls 16, 17 form with the second upper wall 15 a second profile in Inverted U. The second inverted U-shaped profile is arranged above the first inverted U-shaped profile and shares with the first inverted U-shaped profile a common side wall, namely the first side wall 16. All three side walls 16, 18, 17 and the two upper walls 18, 15 thus form an inverted double U profile with two stages of different widths with the first side wall 16 as the common side wall.

[0078] The second inverted U-shaped profile allows the management of the air flow F between the air inlet 3 disposed at the level of the exterior surface of the second upper wall 15 and the air outlet 4 disposed between the first and second inverted U-shaped profiles and more particularly between the second and third side walls 19, 17. The air circulation channel 2 is delimited between the first and second inverted U-shaped profiles, as will be detailed later. The air inlet 3 preferably forming a NACA air intake ensures good penetration of aerodynamic air flow F into the air circulation channel 2 with minimal disturbance of the flow.

The first inverted U-shaped profile forms the receiving housing of the arm and allows the attachment of part 1 to the drive arm 102, as explained previously. [0080] According to the embodiment of Figure 3, the part 1 comprises three air intakes P, P' and P” distributed along the rod 111. According to the embodiment of Figures 4 and 5, the part 1 includes a single air intake P. Of course, the invention is not limited to these configurations and the number of air intakes and their dimensions depend on the efficiency required against the formation of a layer of water.

[0081] As already indicated, the air inlet 3 allows aerodynamic air flows to penetrate within the internal channel 2. The air inlet 3 is arranged at the level of the exterior surface of the second upper wall 15 of part 1 so that it is in contact with the aerodynamic air flows when the vehicle is in operation. The air inlet 3 has a general scoop shape and comprises an air inlet orifice 5 in the air circulation channel 2 as well as an air guiding part 6 in the orifice 5 .

[0082] The guide part 6 comprises a ramp 7 for supplying air into the orifice 5. The ramp 7 for supplying air extends at the level of the second upper wall 15 from a first end, called free end, referenced 8 up to a second end secured to a wall delimiting the orifice 5, called the inlet end 9. In other words, the inlet end 9 of the air supply ramp 7 is arranged at the input of internal channel 2.

[0083] The slope of the air supply ramp 7 (measured relative to the horizontal) is between 2° and 10°, preferably between 5° and 7°.

[0084] Advantageously, the average slope of the air supply ramp 7 descends from the free end 8 to the inlet end 9, in the service position of the part 1 in the system. wiping 100, that is to say when part 1 is mounted on the drive arm 102 (see Figure 3).

As is also apparent from Figures 3 to 5, the air guide portion 6 comprises two opposite walls 10, 11 extending between the ends 8 and 9, each of the opposite walls 10, 11 forming a non-zero angle with the air supply ramp 7, of the order of 90°.

[0086] In Figures 3 to 5, the air supply ramp 7 diverges from the free end 8 to the inlet end 9, a width la of the free end 8 being less than a width LA of the inlet end 9. [0087] In Figures 4 and 5, the divergence of the air supply ramp 7 is symmetrical while in Figure 3, the divergence of the air supply ramp 7 is asymmetrical. The asymmetrical configuration is advantageous for allowing the pipe 114 to pass.

[0088] The air supply ramp 7 of low slope angle and the curvature profile of the opposite walls 10, 11 generate air vortices which divert the inlet boundary layer, thus contributing to the penetration of the flow of air F into the internal channel 2 via the air inlet port 5.

[0089] As more particularly visible in Figures 6 and 7, the air outlet 4, also called diffuser or air distribution or exhaust outlet, is arranged laterally relative to the longitudinal extension of part 1 so that, in the service position of the part in the wiping system, the air coming from the part 1 is directed against the windshield of the vehicle.

As described previously, the air outlet 4 is delimited between the intermediate side walls 19 and rear 17.

[0091] Thus, the air outlet 4 is an opening at the rear side wall 17 of the circulation channel 2 allowing the aerodynamic air flow F having passed through the circulation channel 2 to escape through the space formed between the intermediate side wall 19 and the rear side wall 17 of the part 1, up to the windshield PB in order to reduce the phenomenon of water suction by the blade at the level of the side upright of the blade and at the back of the broom.

As is already apparent from the preceding description, for each air intake P, P', P”, the air flow F circulates first in the air guiding part 6, from the free end 8 to port 5 where the air flow F passes through the air circulation channel 2 to the air outlet 4 where the air flow exits under the air circulation channel 2 via the two intermediate and rear side walls 19, 17, against the windshield PB, and then expels the water which could be there, due to rain or a liquid washing fluid during a cleaning of the windshield in progress, in particular at the level of the side pillar of the windshield when the blade returns from the opposite fixed stop position to go to the fixed stop position. [0093] To expel the water, the air flow F leaving the air outlet 4 reduces or cancels the effect of aerodynamic depression forming at the rear of the drive arm 102 and the arm assembly -broom in opposite position fixed stop, causing the “water pull back” effect. Thanks to the wiping system according to the invention, the water is no longer sucked up near the amount onto the surface of the window by the blade, the reduction in the “water pull back” effect being increasingly effective when moving in opposite direction fixed stop.

[0094] In the case where the fixed stop position is along a car pillar, the wiping system according to the invention operates in a similar manner but is effective as soon as the wiping system is activated due to the fact that the cowling 1 is already in the air flow capture position F, the latter being positioned facing the aerodynamic flows.

[0095] We note that, according to the variant of Figures 3 and 7, the part 1 comprises a compartment 14 for the passage of a liquid fluid, which ensures that the wiping system 100 can project the liquid fluid, such as a watery mixture, towards the windshield. The compartment 14 for passing a liquid fluid allows either the direct storage of the liquid (not illustrated), or the accommodation of the pipe 114 (figure 7).

[0096] In Figure 7, the compartment 14 for passing a liquid fluid is delimited by a gutter 20 for holding the pipe 114 formed by a free end of the front side wall 16. Alternatively, the gutter for holding the pipe can be formed by a free end of the intermediate side wall 19. The liquid fluid stored in the compartment 14 for passing a liquid fluid is intended to supply a spraying device (not illustrated) arranged at the level of the connection device, or on the arm, or even on the broom. Depending on the variants, the pipe 114 is arranged in contact or without contact with the drive arm 102.

[0097] Part 1, also called cowling, allows, thanks to the air intake(s), to prevent the formation of a layer of water around the brushes. It also has the advantage of being simple to integrate, since it is possible to secure it directly to the drive arm 102. Part 1 can be fixed to the drive arm 102 with attached locks and/or locks arranged on flexible hinges and/or attached locks; alternatively, the part can be glued or riveted or fixed by force on rivets or metal “mushrooms” attached to the arm. Preferably, the connection is done by vertical or lateral snapping to the arm for easy, inexpensive and optimal assembly from an industrial point of view. [0098] It is possible to manufacture part 1 by plastic injection or 3-dimensional printing. Depending on the needs, part 1 may include one or more air intakes, distributed or not along the cowling and the upper surface.

[0099] Furthermore, the air supply ramp 7 being recessed relative to the air circulation channel 2, the part 1 is lighter, more aesthetic and has an aerodynamic profile which better captures the flow of air. air f.

[0100] The cowling 1 also has the advantages of providing an aerodynamic function and of being compatible with a liquid fluid projection wiping system.

Claims

[Claim 1] Part for a wiping system, in particular of a motor vehicle, shaped to be integral with an arm of said wiping system, for example a drive arm of a broom of said wiping system, the part (1) comprising at least one air circulation channel (2) provided with an air inlet (3) and an air outlet (4), the air inlet (3) comprising an air inlet orifice (5) in said at least one air circulation channel (2) and an air guiding part (6) in said orifice (5), the guide part (6 ) comprising a ramp (7) for supplying air into said orifice (5).

[Claim 2] Part according to claim 1, in which the air supply ramp (7) extends from a first end (8), called the free end, to a second end (9) integral with a wall delimiting the orifice (5) of the air inlet (3), called the inlet end (9), a slope of the air supply ramp preferably descending from said free end ( 8) towards the inlet end (9), in the service position of the part in the wiping system.

[Claim 3] Part according to the preceding claim, in which the air supply ramp (7) has a divergent shape from the free end (8) towards the inlet end (9).

[Claim 4] Part according to one of the preceding claims, in which the air outlet (4) is arranged laterally so that, in the service position of the part in the wiping system, the air coming from the part is directed against the windshield of the vehicle.

[Claim 5] Part according to one of the preceding claims 2 to 4, in which the guide part (6) comprises two opposite walls (10, 11) extending between the free and inlet ends (8, 9) on either side of the air supply ramp (7), each of the opposite walls (10, 11) forming a non-zero angle with said ramp (7).

[Claim 6] Part according to the preceding claim, in which the angle between each of said walls (10, 11) and the ramp (7) is of the order of 90°.

[Claim 7] Part according to one of the preceding claims, comprising a housing (12) for receiving the arm (102) of the wiping system (100) of which a wall (13) also delimits the air outlet (4) .

[Claim 8] Part according to one of the preceding claims, comprising a compartment (14) for the passage of a liquid fluid.

[Claim 9] Arm for a wiping system, in particular for a motor vehicle, shaped to drive a wiping blade of the wiping system and comprising a part according to one of claims 1 to 8.

[Claim 10] Wiping system, in particular for a motor vehicle, comprising a wiper blade (101) and an arm (102) for driving the blade (101), and a part (1) according to one of the preceding claims, integral with said drive arm.