WO2012031839A1

WO2012031839A1 - Hydraulic connector forming a rotation shaft of a wiper system

Info

Publication number: WO2012031839A1
Application number: PCT/EP2011/063399
Authority: WO
Inventors: Giuseppe Grasso; Jürgen BRAUN; Julien Sauvant
Original assignee: Valeo Systèmes d'Essuyage
Priority date: 2010-09-09
Filing date: 2011-08-03
Publication date: 2012-03-15
Also published as: FR2964620B1; DE112011102653T5; FR2964620A1

Abstract

The invention relates to a hydraulic connector (5) of a wiper system comprising an arm (1), a blade (3) and a mechanical connector (27) solidly connected to the blade. The hydraulic connector (5) comprises at least one liquid circulation passage (17, 19), and the blade (3) has at least one degree of freedom in rotation in relation to the arm (1) about an axis of rotation (23). The invention is characterised in that the axis of rotation (23) is formed by the hydraulic connector (5).

Description

HYDRAULIC CONNECTOR SUPPORTING AN AXIS OF ROTATION

A WIPING SYSTEM

The field of the present invention is that of equipment for vehicles, and more particularly that of equipment for wiping windows of automobiles.

Automobiles are commonly equipped with wiper systems to wash the windshield and prevent the driver's vision from being disturbed. These windscreen wipers are conventionally driven by an angularly reciprocating arm and comprise elongate brushes, themselves carrying scraper blades made of an elastic material. These blades rub against the windshield and evacuate the water by bringing it out of the driver's field of vision. The brooms are made in the form, or, in a classic version, stirrups

15 in a more recent version called "flat blade" (for "flat blade"), a semi-rigid assembly that keeps the scraper blade over its entire length. In both solutions, the blade is attached to the rotating arm of the wiper by a set consisting of a connector and an adapter. The connector is a

20 piece that is set directly on the scraper blade or directly on the flat blade, while the adapter is an intermediate piece that allows the attachment of the connector on the arm of the wiper. These two parts are connected to each other by a transverse axis which allows their relative rotation in a plane perpendicular to the windshield passing through the arm.

The wipers are also equipped with devices for supplying a windscreen washer fluid which is conveyed from a tank located on the vehicle and which is sprayed towards the windscreen by nozzles located around the windscreen. either on the windshield wiper itself for a better distribution of the liquid. In the case of nozzles placed on the brushes, the windshield washer fluid is conveyed,

30 before being distributed between them, by pipes which are fixed on the arm of the wiper and which are connected to the distribution system of the brush at the connector. The connector thus has orifices capable of receiving, by a sealed connection, the ends of said pipes.

On models for high-end vehicles, there are also heating devices of the wiper to thaw the broom in case of extreme cold and avoid it sticks to the windshield under the action of frost. These devices, which are more especially adapted to flat brushes, generally comprise a heating device integrated in the carrier assembly of the scraper blade and on which electrical resistances are deposited. They also require an electrical connection device, placed at the connector, to transmit to the heating device the electric current from the vehicle. It is therefore important to provide the electrical connection between the power wire of the ice-soot and the heating device of the corresponding brush, as well as the hydraulic connection between the pipes carried by the arm and the same. broom.

The document WO2010 / 034447 shows a solidary mechanical connector

15 through an arm and through which a power supply and a liquid pass.

An additional connector supplies the mechanical connector with electricity and liquid.

The disadvantage of such a structure lies in the difficulty of aligning the two connectors in the assembly phase of the blade on the arm. Indeed, it is then

It is necessary to carry out the mechanical assembly of the blade on the arm while ensuring that the additional connector is correctly installed in the mechanical connector. This complicates the assembly and therefore is not ergonomic. This assembly also increases the risk of absence or poor electrical contact and the risk of leakage by lack of sealing between the

25 two connectors.

It is therefore necessary to find a more ergonomic solution that guarantees electrical continuity as well as hydraulic sealing at the connection between an arm and a wiper blade.

The present invention aims to overcome these disadvantages by

30 proposing a new way of connecting the broom to the arm. Unlike the prior art where the axis of rotation between the blade and the arm is made at the mechanical connector integral with the blade, the invention proposes a m ir hydraulic connector of an additional function that is to ensure the degree of freedom in rotation between the arm and the brush necessary for the proper operation of a wiper system.

The invention therefore relates to a hydraulic connector of a wiping system 5 comprising an arm, a blade and a mechanical connector integral with the blade, the hydraulic connector comprises at least one liquid circulation duct, the broom present at least one degree of freedom in rotation relative to the arm along an axis of rotation, characterized in that the axis of rotation is formed by the hydraulic connector.

The rotation necessary for the proper operation of the wiper system is thus no longer ensured between the mechanical connector and the arm, as is the case in the prior art, but between the hydraulic connector and said arm.

Of course, the hydraulic connector and the mechanical connector form two separate parts.

This hydraulic connector is also mechanically and removably connected to the mechanical connector. I l thus comprises an isostatic connection vis-à-vis the mechanical connector, but removable during the phases of assembly and disassembly of the blade relative to the arm.

According to a first characteristic of the invention, the axis of rotation crosses or

20 passes through a constituent body of the hydraulic connector.

According to a second characteristic of the invention, the hydraulic connector comprises a means of rotation which extends along an axis coincident with the axis of rotation. In other words, the rotation means is centered on the axis of rotation between the blade and the arm.

According to a first variant, the rotation means takes the form of at least one hole. This hole can be blind or through and houses a shaft connected directly or indirectly, for example via an adapter, to the arm.

According to a second variant, the rotation means takes the form of at least one shaft which opens out of the hydraulic connector. In such a variant,

It is the hydraulic connector, and more specifically the connector body, which carries a shaft which opens laterally from this connector and around which turns the arm or the adapter fitted to the arm. The mechanical connector constituting the wiper system comprises a liquid circulation channel, the liquid flow conduit of the hydraulic connector being adapted to be connected to said channel. The hydraulic connector thus comprises a sealing means which can take for example the form of a seal.

According to another characteristic of the invention, the connector of the invention comprises an electrically conductive device adapted to be connected to a heating element integrated in the brush. The mechanical connector further comprises at least one track installed between the electrically conductive device and the heating element.

According to another characteristic of the invention, the connector also comprises a removable attachment device adapted to mechanically connect the hydraulic connector to the mechanical connector. This device makes it possible to make the hydraulic connector integral and isostatic with respect to the mechanical connector to guarantee electrical contact and hydraulic sealing, while making it removable for the assembly and disassembly phases of the blade on the arm.

In an exemplary embodiment, the fixing device is removable according to a translational displacement of the mechanical connector relative to the hydraulic connector.

In this example, the removable fastening device comprises a groove or a slide. The hydraulic connector translate vis-à-vis the mechanical connector to an isostatic fastening position relative to each other.

According to another alternative, the fixing device is removable by means of a rotational displacement of the mechanical connector relative to the hydraulic connector.

In such a situation, the removable fastening device comprises at least one hook and at least one tenon. The hook is installed at a first end of the connector while the post is part of an end opposite the first end relative to the body of the hydraulic connector. The rotation takes place around a pivot axis that passes through the hook. It will be particularly noted that the axis of rotation of the degree of freedom between the arm and the blade is median between the hook and the post.

The connector according to the invention is adapted to receive an adapter inserted between the arm and the hydraulic connector, the adapter being mounted in rotation about the axis of rotation between the blade and the arm.

The invention also covers a wiper system comprising an arm, a blade, a mechanical connector and an adapter inserted between the arm and the innovative mechanical connector in that it comprises a hydraulic connector incorporating at least one of the characteristics mentioned above. above.

A first advantage of the invention lies in the fact that the hydraulic connector is permanently mounted on the arm which allows to connect it to the hydraulic and electrical network more reliably. It is therefore understood that for a replacement of the blade, for example in after-sales network, only the blade and its mechanical connector are replaced.

Another advantage is the ease of assembly and disassembly of the blade vis-à-vis the arm. As the hydraulic connector is mounted so as to be integral and isostatic with respect to the mechanical connector, it is possible to implement simple and reliable assembly means to ensure the mechanical assembly, the hydraulic seal and the electrical contact.

Other features, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which:

FIG 1 is a perspective view of a wiper system comprising a connector according to the invention,

2 is an exploded first embodiment of the invention,

FIG. 3 is a perspective view of this first variant on approach for an assembly,

FIG. 4 is a partial perspective view of the assembly phase of the first variant of the invention,

FIG. 5 is a partial perspective view during the assembly phase of the first variant of the invention, FIG. 6 is a partial perspective view at the end of the assembly phase, according to the first variant of the invention,

FIGS. 7 and 8 are side views illustrating certain details of the first variant of the invention,

FIG. 9 is a side view of a second variant embodiment of the connector according to the invention,

FIGS. 10 to 13 illustrate the disassembly phase of the connector, according to the second variant of the invention.

It should be noted that the figures show the invention in detail, where said figures can of course be used to define the invention where appropriate.

Figure 1 illustrates a wiper system comprising an arm 1 having an end 2, otherwise called screed. This end supports a broom 3 which can be of the type with rudder or flat type, known as "flat blade". This broom comprises a heating element which takes the form of a resistive track which travels on a support of the broom. A windshield washer fluid supply 4 takes the form of a pipe which runs along the arm 1 to the end 2 of the latter, where a hydraulic connector according to the invention is installed.

To allow the broom to follow the curvature of the windshield to be wiped, the

Brush 3 has at least one degree of freedom in rotation relative to the arm 1, and more specifically with respect to the end 2, along an axis of rotation symbolized by the reference 23. The brush 3 must thus be able to turn around this rotation axis 23.

Figure 2 illustrates the environment of the hydraulic connector 5 according to the invention. The end 2 of the arm is terminated by a "U" shape comprising a base 6 and two lateral branches 7a and 7b. The free edge of each lateral branch 7a and 7b comprises an edge 8 bent at 90 ° in the direction of the internal volume defined by the base 6 and the branches 7a and 7b.

An adapter 9 has a shape complementary to the internal volume,

30 so as to come and stay in the latter. Side walls 10a and 10b are joined by a bridge January 1 and each comprise at their free ends a flange 12 bent towards the outside of the adapter 9. These flanges 12 form a translational stop when they come to bear against the edges 8 of the end 2 of the arm. This adapter 9 also comprises two holes 24a and 24b each made through the side walls 10a and 10b. These two holes 24a and 24b have a coincident axis, this axis being also coincident with the axis of rotation 23 between the brush and the arm when the wiper system incorporating the hydraulic connector is assembled.

The hydraulic connector 5 is formed by a pierced body 13 at its center. This body has a generally rectangular section with an upper plate 14 at the ends of which a first blank 15 and a second blank 16 extend in a plane perpendicular to the plane in which the upper plate 14 extends.

The connector is qualified hydraulic in that it conducts a liquid. To do this, two fluid circulation ducts 17 and 18 are formed in a base 19 which closes the rectangle formed by the body 13. This base 19 thus extends in a plane parallel to the plane in which the top plate 14 of

15 to define, with the blanks 1 5 and 16, a receiving zone of an electrically conductive device 22, the latter being formed for example by an electrical outlet.

The two condu ces 1 7 and 1 8 are each complemented by a connecting tube 20 and 21 which forms a docking zone of the pipes 4.

The hydraulic connector is crossed by the axis of rotation 23. In practice, it is the connector 5 which serves as a base and around which the arm and possibly the adapter can be turned. To do this, the hydraulic connector comprises a rotation means which can take any form as long as it allows rotation.

In the example of the first variant, this rotation means takes the form of a shaft 25 of axis coinciding with the axis of rotation 23. This shaft 25 forms a cylindrical section pin which opens out from an outer face of the second blank 16. A similar shaft is also formed on the first blank 15.

When the adapter 9 is mounted on the hydraulic connector 5, the shafts

25 are housed in the holes 24a and 24b formed in each side wall 10a and 10b.

The invention also covers the case where the hydraulic connector 5 comprises a means of rotation which takes the form of at least one hole made in the first blank 15 and the second blank 16, these holes being intended to receive trees made in the adapter.

The hydraulic connector also comprises a removable attachment device 26 adapted to mechanically connect the hydraulic connector to a mechanical connector 27. This removable attachment device has the function of connecting the hydraulic connector 5 to the mechanical connector 27 isostatically. It is therefore a connecting means between these two parts qualified removable to allow them to be mounted and removed at will but also qualified isostatic iso because, when these two parts are assembled, no movement n ' is possible between them unless performing a voluntary action for disassembly. In this first embodiment, the removable fixing device 26 takes the form of a groove 28 formed on the outer wall of the base 19, but it may also be a rib that protrudes from this wall

The fixing device 26 is thus detachably movable in translation by the groove 28 or the rib so that the mechanical connector 27 can be moved or translated relative to the hydraulic connector 5.

The hydraulic connector detailed above is made of a material

20 plastic, advantageously molded in one piece.

The mechanical connector 27 is thus qualified, in that it is secured in a manner releasable on the brush. It thus ensures the transmission of the mechanical force from the arm 1 to the broom 3.

This mechanical connector 27 comprises two liquid distribution channels 29 and 30 which cooperate with the liquid circulation conduits 17 and 18 of the hydraulic connector 5. These channels 29 and 30 extend on the sides of the mechanical connector 27, but continue in the center of the latter where they open to the right of the liquid circulation ducts 17 and 18. The seal between these circulation ducts 17 and 18 and these distribution channels 29 and 30

30 is provided by seals 33.

The mechanical connector 27 comprises a base 31 which delimits a rectangular receiving area 36. This reception area has a shape in "U" open on the side of the hydraulic connector 5 and serves to receive this hydraulic connector 5 and an electrical connector 32.

In the side walls bordering the base 31 is provided at least one rib whose purpose is to cooperate with the removable fastening device 26, in particular with the groove 28 so as to form a slide. Of course, such a complementarity of form is not limiting since, for example, the groove may be formed in the base 31 while the removable fastening device is in the form of a rib emerging from the base 19.

The base 31 and the distribution channels 29 and 30 form a unitary piece advantageously molded from a plastic.

The plug 22, when it is housed in the hydraulic connector 5, that is to say between the base 19, the first blank 15, the upper plate 14 and the second blank 16, cooperates with the electrical connector 32 to provide the electrical energy necessary for the operation of the heating element integrated in the brush. The mechanical connector comprises two electrically conductive strands 34 for conducting this electrical energy from the electrical connector 32 to the resistive tracks (not shown) on the brush.

Finally, a cap 35 closes a front portion of the assembly formed by the end 2 of the arm, the adapter 9, the hydraulic connector 5 and the mechanical connector 27. This cap 35 acts as a screen to protect these components while ensuring a good quality exterior finish.

FIG. 3 shows the first embodiment of the hydraulic connector 5 in the approach phase for mounting a blade 3. The latter is integrally connected to the mechanical connector 27. It will be noted that the blade 3 comprises a deflector of air 37 formed unitarily with at least one spraying tube 38. In this case, the brush comprises two spraying tubes each connected to a distribution channel 29 or 30 constituting the mechanical connector 27.

FIG. 3 shows the extremity 2 of the arm which encloses the adapter 9, the latter being mounted on the hydraulic connector 5. The adapter 9 is mechanically held in the extremity 2 by means of the edges 8, the translation between the adapter 9 and the extremity 2 being limited by a support between this edge 8 and the flange 12 which protrudes laterally from the adapter 9.

At this stage, the hydraulic connector 5 has a degree of freedom in rotation about the axis 23 by means of its rotation means.

In FIGS. 4 to 6, the end 2 of the arm and the adapter 9 have been deliberately removed to reveal the removable attachment of the hydraulic connector 5 in the mechanical connector 27.

FIG. 4 illustrates the hydraulic connector 5 close to the mechanical connector 27. The brush 3 and its mechanical connector 27 are approached from the hydraulic connector so as to align the base 19 opposite the receiving area 36. socket 22 is housed in the hydraulic connector and the pipes 4 are threaded on connecting tubes 20 and 21 corresponding.

In FIG. 5, it can be seen that the hydraulic connector 5 has entered the receiving area 36 of the mechanical connector 27. The peripheral walls which border the base 31 are interposed between the base 1 9 of the hydraulic connector 5 and the inner side of a side wall of the adapter.

The removable fastening device 26 automatically aligns the hydraulic connector 5 in the mechanical connector 27 as the groove 28 cooperates with a rib which projects beyond the receiving area 36. As the hydraulic connector is able to freely rotate around the axis 23 thanks to the rotation means with which it is equipped, it tends to align with the mechanical connector until the direction of extension of the groove 28 extends parallel to the direction of extension of the corresponding rib.

Figure 6 illustrates the end of the assembly phase of the blade 3 on the arm and in which the attachment of the hydraulic connector 5 in the mechanical connector 27 is operated. A mechanical interlock between the hydraulic connector 5 and the mechanical connector 27 is effected by means, for example, of a clipping formed in the receiving area 36. This locking is secured when the wiper system is in operation by an angular position of the broom in relation to the arm kept below a determined threshold.

At this stage, the connection between the hydraulic connector 5 and the mechanical connector 27 is isostatic so as, on the one hand, to guarantee the hydraulic seal between the liquid circulation ducts 17 and 18 and the fluid channels. distribution 29 and 30 and on the other hand, ensure an electrical contact without movement between the socket 22 and the electrical connector 32 to avoid abrasion of electrical contacts that can occur when two parts are not connected statically.

Figure 7 shows details of the assembly structure of the hydraulic connector in the mechanical connector 27. In this figure, the blade is in the mounting phase on the end 2 of the arm.

First of all, it is noted that the cap 35 is mechanically held on the electrical connector 32 by means of a pad 39 which is molded with the cap 35. This pad 39 cooperates with a fork 40 manufactured with the electrical connector 32. It is also noted that the cap 35 is supported by the mechanical connector 27 at one end thereof, that is to say, adjacent to the base 31. The electrical connector 32 comprises a pin 46 of circular section dedicated to cooperate with the adapter 9.

This adapter 9 is locked in translation relative to the end 2 by a finger 41 formed in a side wall 10a or 10b of the adapter 9. This finger 41 is housed in a recess 42 formed in the corresponding branch 7a or 7b which forms the end 2. This cooperation between the finger 41 and the recess 42 blocks the movement between the adapter 9 and the end 2.

The mechanical connector comprises at least one protrusion 43 formed on an outer wall of the base 31, on the opening side through which the hydraulic connector enters the mechanical connector 27. This protrusion 43 collaborates with a tooth 44 formed in the extension of one and / or the other branches 7a or 7b. This tooth 44 has a pan

Oblique 45 which extends in a direction angularly oriented with respect to the plane in which the base 6 extends at the end 2. This angle is determined by the height of the protrusion 43 as well as by the angle of the pan. oblique 42 so as to allow the assembly or disassembly of the brush only when the inclination between the arm and the brush exceeds 12.5 °.

As can be seen in FIG. 8 that shows the base 3 actually mounted on the extremity 2, when the angle between them is less than 12.5 °, the tooth 44 is capable of strike the protruding 43 forming and a means of locking the blade on the arm which prevents any inadvertent disassembly.

The axis of rotation 23 between the brush 2 and the end 2 of the arm has also been shown and it can be seen that the axis of the rotation means, in particular the axis of the shaft 25 which extends in the direction of rotation. hole 24a or 24b, coincides with the axis of rotation 23.

The pin 46 of the electrical connector 32 cooperates with an oblong hole 47 formed in a side wall 10a or 10b of the adapter. This structure provides a mechanical connection between the electrical connector 32 and the adapter 9 when the wiper system is in the operating position, that is to say when the angular position of the wiper relative to the arm is maintained. below a certain threshold.

Figures 9 to 13 illustrate a second exemplary embodiment of the hydraulic connector according to the invention.

In Figure 9, the extremity 2 of the arm is lustred in transparency.

The adapter 9 is housed in the "U" section formed by the end 2 and the hole 24a is engaged on the shaft 25 constituting means of rotation, the latter being centered on an axis coinciding with the axis of rotation 23 between the arm and the broom. A connecting tube 20 which opens into the interior of the "U" formed by the end 2 is

Also shown.

In this embodiment, the adapter 9 is locked in the end 2 of the arm by a tongue 48 coming from the upper plate 1 1 forming the adapter 9. This tongue 48 protrudes from the plane formed by the upper plate 1 1 so to enter a recess 42 formed in the base 6 of the end 2. On

25 and locks the translational movement between the adapter 9 and the end 2, so as to extract the hydraulic connector 5 to replace it when it is damaged.

The cap 35 is formed in one piece with the mechanical connector 27, these two components being made during a single operation of

Molding.

While Figures 3 to 6 illustrate a mounting phase of the blade on the arm, Figures 10 to 13 illustrate a disassembly phase of the same broom. Figure 10 shows the hydraulic connector 5 in the assembled position on the mechanical connector 27. This hydraulic connector is thus secured and isostatically maintained relative to the mechanical connector.

In this second variant, the fastening device 26 between the hydraulic connector 5 and the mechanical connector 27 is removable in that it allows the mechanical connector 27 to move in rotation relative to the hydraulic connector 5. This rotation is effected around an axis transverse to the hydraulic connector, that is to say parallel to the axis of rotation 23. This transverse axis is located at a first end 49 of the hydraulic connector opposite to a second end 50 of the latter from which opens the connecting tube 20.

The removable fastening device 26 comprises at least one hook 51 and at least one pin 52. Advantageously, the hydraulic connector 5 comprises two hooks 51 installed at the two corners of the first end 49 and two pins 52 installed at the two corners of the second end 50. The transverse axis around which the rotation is performed to extract the hydraulic connector 5 of the mechanical connector 27 passes through the two hooks 51.

To allow sufficient angular clearance between the arm and the blade, it is found that the axis on which the means of rotation is centered, coinciding with the axis of rotation 23 between the arm and the blade, is located equidistant from the hook. 51 and the post 52.

The hook 51 has a curved shape which facilitates the insertion of the hook into a groove 53 made in the mechanical connector 27, immediately adjacent to the cap 35.

The pin 52 protrudes laterally from the body 13 of the hydraulic connector 5 and has a circular section. This post 52 is trapped in a clip 54 made in the mechanical connector 27. This clip 54 takes the form of two legs which form a fork and in which the tenon is held in place since the legs of the fork grip the post 52.

In this position, the hydraulic sealing of the window cleaning fluid between the hydraulic connector 5 and the mechanical connector 27 is perfectly ensured as well as a vibration-free electrical contact between the device constituent electrical conductor of the hydraulic connector and the electrical conductor embedded on the mechanical connector.

In this variant embodiment, the electrically conductive device is formed by at least one track embedded in the hydraulic connector 5.

FIG. 11 illustrates an unlocking phase of the removable fastening means

26. By rotating the hydraulic connector 5 relative to the mechanical connector 27 about the transverse axis passing through the hooks 51, the post 52 is extracted from the clip 54.

Figure 12 shows the disassembly phase in which pin 52 is completely out of clip 54 and hook 51 is still engaged in groove 53. At this point, hydraulic and electrical continuity between hydraulic connector 5 and the mechanical connector 27 are interrupted.

Finally, FIG. 13 shows the hydraulic connector 5 completely disassociated from the mechanical connector 27, the hook 51 being disengaged from the groove 53. The first variant and the second variant detailed above have been illustrated in the presence of an adapter 9 but the invention is not limited to the presence of this adapter since the hydraulic connector 5 can be held directly in the end 2 so that it comprises a means allowing a rotation of the hydraulic connector.

Claims

1. Hydraulic connector (5) of a wiper system comprising an arm (1), a brush (3) and a mechanical connector (27) integral with the wiper, the hydraulic connector (5) comprises at least one circulation duct a

Liquid (17, 18), the blade (3) has at least one degree of freedom in rotation with respect to the arm (1) along an axis of rotation (23), characterized in that the axis of rotation (23) is realized by the hydraulic connector (5).

2. The connector of claim 1, wherein the axis of rotation (25) intersects a body (13) constituting the hydraulic connector (5).

3. Connector according to one of claims 1 or 2, wherein the hydraulic connector (5) comprises a means of rotation centered on the axis of rotation (23).

4. The connector of claim 3, wherein the rotating means takes the form of at least one hole in the hydraulic connector (5). 15

5. The connector of claim 3, wherein the rotating means takes the form of at least one shaft (25) which opens out of the hydraulic connector (5).

Connector according to any one of the preceding claims, wherein the mechanical connector (27) comprises at least one circulation channel of a

Liquid (29, 30), the liquid flow conduit (17, 18) of the hydraulic connector (5) being adapted to be connected to said channel.

7. Connector according to any one of the preceding claims, comprising an electrically conductive device (22) adapted to be reli ied to a heating element integrated in the brush (3).

Connector according to any one of the preceding claims, comprising a removable fastening device (26) capable of mechanically connecting the hydraulic connector (5) to the mechanical connector (27).

9. The connector of claim 8, wherein the fixing device (26) is removable in a translational movement of the mechanical connector.

30 (27) with respect to the hydraulic connector (5).

The connector of claim 9, wherein the removable attachment device (26) comprises a groove (28) or a rib.

11. The connector of claim 8, wherein the fixing device (28) is removable in a rotational movement of the mechanical connector (27) relative to the hydraulic connector (5).

Connector according to claim 11, wherein the removable attachment device (26) comprises at least one hook (51) and at least one tenon

(52).

13. Connector according to any one of the preceding claims, adapted to receive an adapter (9) interposed between the arm (1) and the hydraulic connector (5), the adapter (9) being rotatably mounted about the axis rotation (23).

14. Wiper system comprising an arm (1), a blade (3), a mechanical connector (27) and an adapter (9) interposed between the arm (1) and the mechanical connector (27), characterized in that it comprises a hydraulic connector (5) according to any one of the preceding claims.

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