WO2022175417A1

WO2022175417A1 - Device for connecting a wiper blade to an arm of a wiping system

Info

Publication number: WO2022175417A1
Application number: PCT/EP2022/054015
Authority: WO
Inventors: Gérald CAILLOT; Philippe BILLOT; Vincent Izabel
Original assignee: Valeo Systèmes d'Essuyage
Priority date: 2021-02-18
Filing date: 2022-02-17
Publication date: 2022-08-25
Also published as: FR3119815B1; FR3119815A1

Abstract

The present invention relates to a system for connecting (5) a wiper blade (3) onto an arm (2) of a system for wiping (1) a glazed surface, the connection system comprising a clevis (5) extending longitudinally between a first end (13) configured to be connected to the arm (2) of the wiping system (1) and a second end (14) opposite the first end (13), the clevis (5) comprising at least one coupling portion (51) which is configured to form a receiving cavity for a connection (100) associated with the wiper blade (3), characterized in that the connection system (4) comprises an end piece (7) arranged against the coupling portion (51), at the second end (14) of the clevis (5), the end piece (7) comprising means for damping (17) an impact of the coupling portion (51) on the glazed surface.

Description

System for connecting a wiper blade to an arm of a wiper system

The present invention relates to the field of wiper systems on a vehicle and relates more particularly to a system for connecting a wiper blade to an arm of such a wiper system.

In general, a wiping system for a motor vehicle comprises an arm, driven in rotation by a motorized system and intended to perform an angular to-and-fro movement along a glazed surface to be wiped, and a wiper blade mounted at a free end of the arm and comprising a wiper blade. This wiping blade is intended to be in contact with the glazed surface of the vehicle and, driven by the angular to-and-fro movement of the arm, will wipe and/or clean the glazed surface in the event of bad weather or washing of said glazed surface, in order to ensure a clear and unobstructed view for the driver of the vehicle.

Wiper blades have a limited lifespan due to their friction against the glass surface. A worn wiper blade being likely to perform poor wiping of the glass surface, it is advisable to replace the worn blade with a new blade to avoid causing a loss of visibility for the user of the vehicle and causing a serious accident. .

As such, it is known to use systems for connecting the blade to the arm which allow the wiper blade to be changed without requiring tools or special knowledge.

More particularly, the wiper blade is attached to the arm of the wiper system by a connection which generally comprises at least one adapter and one connector, and which allows the blade to be disassembled and reassembled, in particular to allow the replacement of a worn blade. The connector is secured to the wiper blade, and the adapter is a part configured, on the one hand, to cooperate with the connector by allowing the adapter to pivot relative to the connector, and, on the other hand, to be engaged with an end part of the arm, if necessary via a yoke mounted at the end of this arm. The adapter and the connector then cooperate to secure the wiper blade to the drive arm and allow an articulated connection between the latter two.

During a wiper blade change operation, the user must raise the drive arm and move it away from the glass surface in order to be able to remove the wiper blade, and with it at least the connector. The user can then attach a new broom and its associated connectors to the arm that remains in the raised position. A problem with these wiper blade change operations is that, temporarily, one end of the yoke of the arm is left free in the absence of a wiper blade connected to it. A false movement of the user, an uncertain raised position of the arm or any other cause can then cause the arm to fall and potentially a violent impact of the free end of the clevis against the glass surface, which risks cracking even to break.

The present invention makes it possible to limit such a risk by proposing a system for connecting a wiper blade to an arm of a system for wiping a glazed surface, said connection system comprising a clevis extending longitudinally between a first end configured to be connected to the arm of the wiper system and a second end opposite the first end, said yoke comprising at least one coupling portion which is configured to form a cavity for receiving a connector associated with the blade wiper, characterized in that the connection system comprises an end piece placed against the coupling portion, at the second end of the yoke, the end piece comprising means for damping an impact of the coupling portion on the glass surface.

The yoke is configured at its first end to be secured to the arm of the wiper system via a crimping operation for example. Thus, when the arm is moved when the wiper system is put into operation, the yoke is intended to follow this to-and-fro movement.

The end cap is arranged on the second end of the yoke, which corresponds to the end opposite the first end connected to the arm. The second end also corresponds to the free end if there is no wiper blade.

This configuration of the connection system within the wiper system is such that in the event of an uncontrolled fall of the arm of the wiper system and therefore of the yoke, it is the end piece and its damping means which enter in contact with the glass surface and not the second end of the screed, which could break the glass. The means for damping an impact of the coupling portion on the glazed surface therefore make it possible to preserve the condition of the glazed surface, even if the arm falls on the glazed surface while the new wiper blade is not yet installed on the arm.

The connectors associated with the wiper blade are configured to be received at least partially in the coupling portion of the yoke, and to allow tilting mounting of the blade at the end of the arm. This connection may in particular comprise an adapter and a connector pivotally mounted relative to each other, with the connector made integral and inseparable from the brush and the adapter pivotally mounted on the connector and reversibly coupled on the portion of yoke coupling.

The adapter can thus be fixed to the yoke, in this coupling portion, and is configured to be linked to the connector of the wiper blade. The adapter can also be linked to the wiper blade connector, then the assembly is coupled to the clevis. The adapter carries coupling means on the yoke which allow the wiper blade to be mounted or removed in an accessible and quick way.

According to a characteristic of the invention, the end piece is further configured to block the wiper blade longitudinally with respect to the yoke.

In other words, the wiper blade connector once coupled to the yoke comes into abutment against the end piece. The end piece thus allows a double securing of the fixing of the broom on the screed. This is particularly advantageous in the event that the coupling means should break.

According to one characteristic of the invention, the damping means comprise a protruding portion configured to come into contact with the glazed surface during an impact of the coupling portion on the glazed surface, so that it is the first in contact with the glass surface in the event of the arm falling during a worn blade replacement operation.

According to one characteristic of the invention, the end piece comprises a body which extends in a longitudinal direction, the damping means comprising an extension of the body in at least one direction transverse to the longitudinal direction.

According to one characteristic of the invention, the end piece comprises a body which is arranged in the extension of the coupling portion, in a longitudinal direction, to longitudinally close the reception cavity, the damping means forming an extension of the body in at least one direction perpendicular to the longitudinal direction. In other words, the end piece comprises a body which forms a longitudinal extension of the yoke and the damping means extend perpendicular to the longitudinal extension of the body.

More particularly, the damping means extend towards the glazed surface when the yoke is parallel or substantially parallel to the glazed surface. The extension of the damping means has an extension such that when the screed falls, the damping means make it possible to avoid contact between the screed and the glazed surface and damage to the latter.

According to one characteristic of the invention, the damping means can form an extension of the body in two directions perpendicular to the longitudinal direction, that is to say in a vertical direction to be the first part of the connection system and of the associated arm capable of coming into contact with the glazed surface when the arm falls in the direction of the glazed surface when changing a used brush, and in a transverse direction in order to be able to form said vertical projection without interfering with the mounting of the brush on the yoke . In this way, it can be considered that the damping means form a local, punctual extension of the end piece.

According to one characteristic of the invention, the coupling portion is formed of two side walls interconnected by an upper wall so as to form the cavity for receiving the connectors, the coupling portion having a lower plane passing through a free end of the side walls, and wherein the damping means form a vertical extension of the body extending to the other side of the lower plane relative to the body.

According to a characteristic of the invention, and with respect to an extension of the damping means in the transverse direction, with a coupling portion formed of two side walls connected to each other by an upper wall so as to form the cavity for receiving the connection, the damping means extend on the other side of an elongation plane of one of the side walls with respect to the body.

According to one characteristic of the invention, at least the damping means of the end piece are made of a material different from the material of the yoke, the material of the damping means being more flexible than the material of the yoke. By way of example, the damping means, and if necessary the entire end piece, can be made of polycarbonate in order to avoid damaging the glass surface in the event of an impact, and the yoke can be made of steel. . The damping means can be made of the same material and in one piece with the body of the end piece, or else consist of a piece of flexible rubber molded locally on the body of the end piece which can be made of a plastic. more rigid.

According to a characteristic of the invention, the damping means of the end piece comprise a longitudinal extension opposite the coupling portion forming a deflector means. Such a tip makes it possible to avoid damaging the glazed surface, by the configuration of the damping means forming a projection from the body of the tip and forming a prominence in particular vertical with respect to the yoke, and to improve the aerodynamics of the wiping system. The deflector means is thus arranged opposite at least a portion of the yoke, which happens to be a potential significant vector of aerodynamic disturbances.

According to a characteristic of the invention, the deflector means comprises at least one oblique portion extending longitudinally along the yoke, and having an oblique orientation with respect to the side wall of the yoke. This is a first embodiment of the deflector means. The oblique portion makes it possible, when the vehicle is in motion, to circulate the air along said oblique portion, by deflecting the air in particular above the tread.

According to one characteristic of the invention, the deflector means comprises at least one air inlet, at least one air outlet and at least one channel configured to ensure air circulation between the air inlet and the outlet. of air. This is a second embodiment of the deflector means. The air circulates here within the deflector means and the endpiece which carries it, via a channel which can in particular be formed to allow the air to bypass the yoke. The air inlet is arranged facing a direction of air flow when the vehicle is in motion and the air outlet is arranged so as to be offset longitudinally relative to the tread.

According to one characteristic of the invention, the second end of the yoke and the end piece interact with each other by form complementarity and by fixing by elastic deformation.

According to one characteristic of the invention, the connection system comprises a fixing clip ensuring the locking of the connection between the end piece and the second end of the yoke. It is understood that in this case, it is the fixing clip which comprises the elastically deformable means allowing the fixing of the end piece by clipping.

According to one characteristic of the invention, the endpiece comprises a cleaning fluid projection element, the endpiece being configured to at least partially house a cleaning fluid pipe, said pipe being connected to the projection element . The projection element is arranged on the nozzle and constitutes one end of the cleaning fluid line. The line can then extend along the screed and be connected to a reservoir of cleaning fluid.

Other characteristics and advantages of the invention will become apparent through the description which follows on the one hand, and several embodiments given by way of indication and not limiting with reference to the appended diagrammatic drawings on the other hand, on which :

is a general view of a wiper system provided with a system for connecting a wiper blade to an arm according to a first embodiment of the invention,

is a view of the wiper system of the , with an exploded representation of the connection system according to the first embodiment,

is a side view of an end piece, a locking clip and a clevis of the connection system according to the first embodiment, making particularly visible means for damping the end piece projecting vertically with respect to the screed,

is a perspective view of the end piece, of the locking clip and of the yoke of the connection system according to the first embodiment, making particularly visible the means for damping the end piece projecting vertically and transversely with respect to the yoke ,

is a perspective representation of the tip of the clip and the clevis of the , seen in exploded view,

is a representation in perspective of a connection system according to a second embodiment of the invention,

is a partial top view of the connection system of the ,

is a representation, from another angle of perspective, of the connection system of the , making it possible to illustrate a particular method of attachment between the end piece and the yoke,

is a representation in perspective of a connection system according to a third embodiment of the invention,

is a schematic representation, seen from below, of the connection system of the ,

is a representation in perspective of a connection system according to a fourth embodiment of the invention.

In these figures, the trihedron LVT as well as the marks LV and LT will represent the orientation of the connection systems according to the different embodiments. The longitudinal direction L corresponds to an axis parallel to the main axis of the arm and of the wiper blade, and the vertical and transverse directions V and T correspond to axes perpendicular to the longitudinal direction L, the vertical direction V being more particularly the direction corresponding to a direction perpendicular to the glazed surface to be wiped when the wiping blade is in the cleaning position against this glazed surface.

The is an overview of a wiper system 1 of a motor vehicle. The wiping system 1 mainly comprises an arm 2 and a wiper blade 3, fixed to a free end of the arm via a connection system 4 interposed between the blade and the arm.

The arm 2 of the wiper system comprises a driver 8 and a rod 9 extending mainly in the longitudinal direction, the rod being able to be inserted and crimped into a casing as illustrated in the figure or alternatively be configured so as to form stem and housing in one piece. The coach 8 comprises means of cooperation with a drive shaft of a motor allowing the rotational movement of the arm. The coach 8 and the rod 9 extend substantially perpendicular to the axis of rotation of the arm 2, here substantially vertical, and the arm is configured so that all or part of the rod 9, at least the proximal part whose free end carries the wiper blade, extend in the longitudinal direction as mentioned above. The rod 9 is mounted on the driver 8 so as to be able to pivot around a transverse axis, perpendicular to the axis of rotation of the arm and to the axis of elongation of the rod 9, and take a raised position allowing replacement of a worn wiper blade. The connection zone between the rod 9 and the driver 8 is vertically at a distance from the glazed surface, so that if the rod is caused to fall, it is its free end opposite the driver which would be brought to come into contact with the glass surface.

When the wiper blade 3 is mounted on the arm, the wiper system is such that the blade also extends mainly in the longitudinal direction L. The wiper blade 3 comprises a wiper blade 10 which is in direct contact with a glazed surface of the vehicle, the displacement of the wiping system causing the removal by sweeping of the dirt and/or water present on the glazed surface. Wiper blade 10 is held within wiper blade 3 by means of an assembly not detailed here. Terminations 11 are arranged at each end of the wiper blade 3 in order to ensure the maintenance of said assembly. The wiper blade 3 also comprises air deflectors 12, in particular arranged at the top of the blade, that is to say opposite the wiper blade 10, the function of which is to deflect the flow of air caused by the movement of the motor vehicle and improve the aerodynamics of the vehicle, and also to increase the bearing force of the wiper blade 3 on the glazed surface.

As mentioned previously, the wiping system 1 comprises a connection system 4 ensuring the connection between the arm 2 and the wiper blade 3. According to the invention, this connection system 4 is particularly advantageous in that it makes it possible to prevent the glass surface from breaking in the event of an impact of the arm on the glass surface when the user replaces a used wiper blade with a new one. To do this, the connection system 4 comprises a yoke 5 and an end piece 7 provided with damping means. The yoke 5 is intended to be fixed to the arm and extends along the longitudinal dimension L between a first end 13 facing the arm and a second free end 14 opposite the arm, and the end piece 7 is fixed to the yoke 5 at the level of the second end 14. It is understood that during a wiper blade replacement operation, at least the rod 9 of the arm is positioned in a raised position, substantially vertical, and that if the rod of the arm is caused to fall without the brush being fixed on the arm, it is the second end 14 of the yoke 5 left free which could hit the glazed surface and damage it if this second end were not equipped according to the invention an end piece carrying damping means as will be detailed below.

The clevis 5 is secured to the arm 2, irreversibly, for example by force fitting, by crimping or by welding. The first end 13 of the yoke 5 is in particular configured to have a shape complementary to that of the rod 9 of the arm 2 so that the rod can be fitted into the yoke. The connection system 4 is thus connected to the arm 2 and follows its angular displacement movement.

The yoke 5 more particularly comprises a coupling portion 51, intended to cooperate with a connector 100, allowing the pivoting and removable mounting of the brush, and a fixing portion 52 to the arm, the fixing portion extending the coupling portion 51 longitudinally. In this context, the coupling portion 51 carries the second end 14 and the fixing portion 52 carries the first end 13. As can be seen in Figures 1 and 2 in particular, the fixing portion extends the coupling portion 51 being offset transversely, so that a rear longitudinal end 53 of the coupling portion is free, the front longitudinal end of the coupling portion corresponding to the second end 14 of the yoke.

As will be described below in detail, in particular with reference to the , the coupling portion 51 is configured, in particular by an appropriate U-shape, to receive the connectors 100 associated with the wiper blade 3. The wiper blade 3 and this connector 100 are fixed to the yoke 5 in particular thanks to coupling means 15, for example by clipping in order to ensure quick assembly and disassembly of the wiper blade 3 and accessible to the general public.

As mentioned, the end piece 7 is fixed to the second end 14 of the yoke 5. The end piece 7 thus blocks the wiper blade 3 longitudinally with respect to the yoke 5, the connectors 100 of the wiper blade coming in abutment against the endpiece 7 once coupled to the yoke 5. The endpiece 7 thus plays the role of a double securing of the attachment of the broom to the yoke in the event that the coupling means 15 should break.

The end piece 7 comprises a body 16 which extends the second end 14 of the yoke 5 in the longitudinal direction L and which tends to close an open profile of the yoke at the level of this second end 14, as well as damping means 17 an impact of the coupling portion on the glazed surface, hereinafter called damping means. These damping means 17 form a projection from the body 16, and in particular along the vertical direction V, in the direction of the glazed surface when the brush is in position against the glazed surface. Thus, in the event of the arm falling from a raised position in the direction of the glazed surface, it is the damping means 17 which first come into contact with the glazed surface and which collect or transmit to the glazed surface the forces generated by high speed impact. These damping means advantageously have, according to the invention, a configuration, of shape and/or of material, making it possible to reduce the transmission of these forces as much as possible.

As will be detailed below, the damping means also form a transverse extension of the end piece, moving away from the yoke, in order to be able to form a vertical projection from the body of the end piece, beyond the screed, without being bothered by the presence of the broom.

Regarding the material configuration, at least the damping means 17 of the end piece 7 are formed of a material different from the material constituting the yoke 5. More particularly the material of the damping means 17 of the end piece 7 consists in a more flexible material than the material of the yoke 5, which may in particular be of the same material as the rod 9 of the arm 2 of the wiper system to allow these parts to be welded together. The flexibility of the material of the damping means makes it possible to cushion the fall of the yoke 5 and therefore to preserve the condition of the glazed surface.

By way of example, the yoke can be made of steel while the damping means 17, and if necessary, the entire end piece, are for example made of polycarbonate.

Regarding the shape configuration, the damping means 17 form as mentioned a vertical projection relative to the body 16 of the end piece 7. As is particularly visible on the , it follows from this arrangement that the damping means extend vertically closer to the glazed surface than the yoke 5 and its coupling portion 51 on which the end piece is mounted.

The is an exploded view of a part of the wiping system, allowing to detail what has been described in . It is in particular possible to observe that the coupling portion of the yoke 5 consists of two side walls 18 interconnected by an upper wall 19, thus presenting a U-shape seen in a plane perpendicular to the longitudinal direction L.

The U-shape generated by this arrangement of the walls of the coupling portion 51 makes it possible to form a cavity for receiving the connectors 100, here formed of an adapter 6 configured to be fully inserted within the yoke 5 and of a connector 24 secured to the brush.

The connector 24 can in particular be fixed irreversibly to the wiper blade 3, by crimping for example, or else by means of a fitting in force in the connector, if necessary associated with a welding or deformation operation. of matter.

The connector 24 is configured to be linked to the adapter 6, by means of a pivoting connection allowing the pivoting of the connector relative to the adapter, the pivoting connection being defined by complementarity of shapes of studs 101 and of associated orifices respectively carried here by the adapter 6 and the connector 24. Without departing from the context of the invention, the broom can then be mounted on the arm by first connecting the connector 24 to the adapter 6, then by fixing the assembly and the associated broom to the yoke 5 and therefore to the arm 3, or else mount the broom on the arm by first mounting the adapter in the yoke then by matching the shapes of the adapter and the connector.

The connection system 4 is such that the adapter 6, with or without the connector and the associated brush, is slid into the yoke by the rear end 53 of the coupling portion 51, opposite the end carrying the tip. As seen on the , each of the side walls 18 of the yoke 5 has at its free end, opposite the upper wall 19, a vertical end edge 21 folded inwardly of the yoke to form an abutment edge partially closing transversely the U-shaped opening of the coupling portion, so as to ensure the maintenance of the adapter 6 when the latter slides from the rear end of the coupling portion 51.

Once in position, the adapter 6, and therefore the connectors 100 as a whole, is held in position in the yoke by the action of coupling means 15. The adapter 6 comprises in particular a removable stud 22 which can be moved elastically according to the vertical direction V. The upper wall 19 of the yoke 5 comprises an opening 23 having a shape and dimensions equivalent to those of the removable stud 22 of the adapter 6. When the adapter 6 is slid within the shape of U of the coupling portion 51 of the yoke 5, the removable stud 22 is able to retract, then to return to its initial position once facing the opening 23 of the upper wall 19. The removable stud 22 is thus blocked within the opening 23, and the adapter 6 is therefore locked in the yoke 5. The removable stud 22 of the adapter 6 and the opening 23 of the upper wall 19 of the yoke 5 therefore constitute the coupling means 15 making it possible to ensure the connection e between the yoke 5 and the wiper blade 3, via the connector 100. To remove the adapter 6, pressing the removable stud 22 through the opening 23 releases the adapter 6. The latter can then be slid in the opposite direction to its direction of insertion in order to remove it from the yoke 5.

In the example illustrated, the end piece 7 is mounted on the yoke 5 via a vertical translation of the end piece 7 with respect to the coupling portion, facing the second end 14 and it is fixed on the yoke via a fixing clip 25, which makes it possible to lock the end piece 7 on the second end 14 of the yoke 5, the fixing clip 25 here having elastically deformable tabs 26 respectively allowing the attachment of the clip relative to the end piece and by relative to the coupling portion 51 of the yoke.

On the , it is possible to observe that the damping means 17 of the end piece 7 do not extend over the entire transverse dimension of the end piece, but that they form a partial extension of the end piece extending only locally in the longitudinal extension of one of the side walls 18 of the coupling portion of the yoke. This partial extension of the end piece aims in particular not to create mechanical interference with the wiper blade 3 when the latter is in place. Despite the local nature of the damping means 17 extending only over a part of the transverse dimension of the end piece, these damping means nevertheless remain configured to come into contact with the glazed surface by preventing any contact between them. here and screed 5.

One can define among the side walls 18 a first side wall facing the passenger compartment of the vehicle and a second opposite side wall. The local extension formed by the damping means may extend in the longitudinal extension of the first side wall or in the longitudinal extension of the second side wall. Advantageously, the damping means extend in the longitudinal extension of the side wall which is closest to the windshield when the wiper blade is in the cleaning position against the glass surface.

The represents a part of the yoke 5, and more particularly the coupling portion 51, and the end piece 7, seen from the side. The shows that the damping means 17 form an extension of the body 16 of the end piece in the vertical direction V, this extension being dimensioned so that the damping means 17 extend beyond the end edge vertical 21 of the side walls 18. As mentioned previously, this vertical end edge 21 delimits the vertical dimension of the side walls 18, which extend between the upper wall 19 and this vertical end edge 21. A longitudinal and transverse plane P passing through the two vertical end edges of the side walls can thus be defined as a lower plane of the coupling portion 51 of the yoke 5, and the damping means form an extension of the tip beyond this plane P. As shown in the , a free end 170 of the extension means, namely the end of the extension means 17 facing the glazed surface and opposite the yoke, extends with a vertical offset Dv relative to the lower plane P of the portion of coupling. This extension ensures that, when the yoke 5 falls, it is necessarily the damping means 17 which come into contact first against the glazed surface, and not any portion of the yoke 5 which does not have damping means and which in particular can be made of a less flexible material than that chosen to make the damping means 17.

The offers another angle of view to more precisely illustrate the characteristics specific to the damping means. Thus, as mentioned above, it is visible that the damping means 17 form a vertical extension of the body of the end fitting extending on the other side of the lower plane P with respect to the coupling portion 51 of the yoke 5 and therefore relative to the body of the end piece. The free end 170 of the damping means 17 extend at a distance Dv from this lower plane P of the coupling portion 51.

Furthermore, the makes particularly visible the transverse offset Dt of the damping means relative to the body 16 of the end piece, the damping means 17 extending on the other side of an elongation plane of one of the side walls 18 relative to the body 16.

The also makes visible that the damping means 17 extend locally, that is to say partially over the transverse dimension of the body 16 of the end piece. In this it can be observed on the that the body 16 has a vertical end edge 160, which is intended to extend in the previously defined plane P, namely the lower plane of the coupling portion 51 comprising the vertical end edges 21 of the side walls 18, and that the damping means vertically form a prominent part with respect to this vertical end edge 160.

Moreover, it is notable on the that the free end 170 of the damping means 17, facing the glazed surface, has a domed shape. This particular shape makes it possible to accentuate the damping function and to prevent any impact on the glazed surface when replacing a worn wiper blade from damaging the glazed surface.

The allows an enlargement of the representation of the end piece, of the fixing clip and of the yoke, so as to make particularly visible the characteristics allowing the fixing of the end piece on the yoke, in particular via the fixing clip 25. The end piece 7 comprises a base 70 forming a longitudinal projection of the body 16 and which is configured to allow attachment to the yoke. More particularly, the base has a T-shape capable of cooperating with fixing lugs 54 forming a longitudinal projection from the second end 14 of the yoke. These curved lugs 54 are configured to be housed in a clearance provided between the base and the body and are thus capable of blocking the end piece in the longitudinal position and in the transverse position once it is in place against the yoke. The base has at least one shoulder 72 forming a stop for the vertical positioning of the endpiece against an underside of a curved tab 54 . The fixing clip 25 then has the function of blocking the second direction of vertical movement, by cooperation of the tabs 26 in a through hole 74 provided on the end piece and by the support of fins 250 against an upper face of the curved legs 54 In this context, the end piece is translated from the lower end of the coupling portion 51 of the yoke 5 and it is fixed to the yoke via the fixing clip 25 which is attached to it from the upper end of the yoke. screed. This assembly must thus be carried out before the connector 100 and the associated brush is fixed on the yoke, so that the presence of the brush does not interfere with the fixing of the end piece on the yoke.

The represents a second embodiment of the connection system 4 according to the invention. The second embodiment differs from the first embodiment in particular by the shape of the end piece 7 and the damping means 17. It may be considered that the shape of the yoke, and in particular of the cooperation between the adapter and the coupling portion of the clevis remains identical.

The tip here comprises a deflector means 27, in addition to the body 16 and the damping means 17, which makes it possible to improve the aerodynamics of the wiper system, in addition to the air deflectors of the visible wiper blade in Figures 1 and 2. This deflector means 27 has the particular effect of deflecting the air flow so that it is least disturbed in the vicinity of the connection system 4. More particularly, the deflector means 27 is made by a shape particular damping means 17 which, in addition to vertically extending the body 16 of the end piece, form a longitudinal extension of this body 16 so as to come into at least partial overlap of the yoke, and here in total overlap of the coupling portion 51 of the yoke. As before, it is possible to define among the two side walls 18 a first side wall of the yoke facing the passenger compartment and a second opposite side wall, and it should be noted that the longitudinal extension of the body 16 of the end piece 7 by the damping means 17 allows recovery of the second side wall.

In this second embodiment, the deflector means 27 comprises a first oblique portion 28 and a second oblique portion 29 interconnected and extending mainly in the longitudinal direction L, along the yoke 5. The first oblique portion 28 is substantially opposite the corresponding side wall of the yoke, and the second oblique portion 29 extends between the first oblique portion and the glazed surface.

The orientation of the

oblique portions

28, 29 is such that when the wiper system and the vehicle are in operation, the two

oblique portions

28, 29 guide the air so that it circulates along them and so not come to mechanically constrain the connection system 4 by circulating over the yoke 5. The deflector means 27 makes it possible to generate an overpressure on its surface and thus to press the connection system in the direction of the windshield, by phenomenon of downforce .

In this second embodiment, the free end 170, facing the glazed surface, of the damping means 17 is carried by the second oblique portion 29 of the deflector means, and extends over the entire longitudinal dimension of the portion of coupling 51 of the yoke 5. It is notable that the free end extends here over a larger dimension than in the first embodiment, and that the fact of being carried by the second oblique portion 29, which is an extension of the first oblique portion facilitates the flexibility of this free end and the damping function. In accordance with what has been described previously, this free end is offset vertically with respect to the lower plane, longitudinal and transverse, of the coupling portion 51 of the yoke 5, so that it is the first in contact with the surface window in the event of the arm falling during a worn broom replacement operation.

The shows part of the second embodiment of the connection system 4, seen from above, which in particular makes it possible to see that a space 30 is formed between the deflector means 27 of the end piece 7 and the side wall 18 of the yoke 5 the along which extends the deflector means 27. This space 30 makes it possible to evacuate the air which can infiltrate under the free end of the second oblique portion 29 and thus prevent this air from being able to raise the yoke 5 and therefore drive the broom away from the glazed surface.

In order to maintain such a space 30 while preventing the oblique portions of the deflector means 27 from deforming under the effect of the air pressure, the deflector means comprises a projection 31 emerging from an internal face of the first oblique portion 28. The projection 31 is oriented towards the side wall 18 of the yoke 5 and it is intended to rest on the latter in order to maintain the position of the deflector means 27 at the desired distance from the yoke.

The still represents the second embodiment of the connection system 4, according to an angle of view opposite the damping means which makes it possible to illustrate the mode of attachment between the end piece 7 and the second end 14 of the yoke 5 , which differs from what could be described in the first embodiment. Indeed, the latter interact with each other by complementarity of shape and elastic deformation, and without requiring a fixing clip as described above. It should however be noted that the mode of attachment of the first embodiment and the mode of attachment of the second embodiment could be interchanged without departing from the context of the invention.

A prominence 32 is formed on a transverse edge of the base 70 of the end piece, with at least a cylindrical shape of circular section, and a notch 33 is formed vertically on the corresponding side wall 18 of the yoke, from the edge of vertical end 21, with a bottom of the notch which has a circular cross-sectional shape of dimension complementary to that of the prominence. The shape of the prominence 32 and the flexible material in which this prominence is made make the prominence capable of deforming in order to be able to take place in the bottom of the notch 33. Once the prominence has been fitted into the notch, the prominence returns to its original shape which tends to lock the prominence 32 in the bottom of the notch 33 and to lock the fixing between the end piece 7 and the second end 14 of the yoke 5 without the need for a fixing clip. Opposite the base 70, the rear shape of the end piece 7 is configured to cooperate by complementarity of shapes with a rear part of the yoke, whether before or after the prominence is snapped into the notch. .

It can be noted that here again, the end piece is fixed on the clevis by snap-fastening, after a translation of the end piece from below the clevis. Here again, the end piece must be mounted on the yoke before the connectors 100 and the associated brush are fixed on the yoke 5.

Figures 9 and 10 show a third embodiment of the connection system. Here again, the damping means 17 are arranged so as to form a deflector means, with the free end, facing the glazed surface, of the damping means 17 which extends over the entire longitudinal dimension of the yoke. In accordance with what has been described above, this free end is offset vertically with respect to the lower plane, longitudinal and transverse, of the coupling portion 51 of the yoke 5, so that it is the first in contact with the glazed surface in the event of the arm falling during a worn blade replacement operation. The deflector means 27 of the third embodiment here makes it possible to circulate the air within the end piece 7 in order to prevent it from infiltrating between the deflector means and the yoke and to improve the aerodynamics of the system of connection. In this context, the deflector means 27 differs from the above in that it does not consist of oblique walls, but of a parallelepiped of substantially the same vertical dimension as the yoke. The deflector means has an upper face inclined with respect to the plane of the upper wall of the yoke 5, so as to deflect part of the air flow. The deflector means 27 is especially special in that it comprises on a longitudinal attack face 270, substantially parallel to the side walls of the yoke and facing away from the yoke, a plurality of air inlets 34. These air inlets are in particular formed in a lower edge of this attack face 270. The air is thus likely to enter within the end piece 7 via the air inlets 34. The deflector means is also particular in that it comprises within it a channel 35 which extends within the endpiece 7 and which is schematically represented on the , which is a view from below of the end piece 7. The channel 35 is connected to all the air inlets 34, and the air that enters the end piece is caused to circulate along the channel. The channel is curved so as to extend longitudinally within the deflector means and so, in continuity, to extend within the body 16 of the end piece in a transverse direction which allows the air which engulfs the channel to bypass the screed 5.

The channel 35 extends to an air outlet 36 arranged on the wall of the end piece 7 opposite the air inlets 34, that is to say a transverse wall of the body of the end piece. The air therefore circulates from the air inlets 34 to the air outlet 36 so that the end piece 7 can promote the aerodynamics of the wiper system, avoiding the yoke of the connection system.

The shows a fourth embodiment of the connection system. In this fourth embodiment, the shape of the end piece 7 is similar to the end piece described in the first embodiment, that is to say with damping means 17 which are not configured to form a medium deflector.

The fourth embodiment, however, differs from the first embodiment in that the endpiece is configured to allow the projection of a cleaning fluid onto the glazed surface on which the wiper blade performs its wiping function. To do this, the body 16 of the endpiece 7 comprises at least one projection element 37 connected to a pipe 38 of cleaning fluid. On the , the endpiece 7 comprises two projection elements 37, but the number of projection elements 37 can be various depending on the need. The cleaning fluid can thus, for example from a reservoir of cleaning fluid, be pumped within the pipe 38 when the cleaning of the glazed surface is necessary. The pipe 38 can for example extend within the yoke 5, or else along the latter in the longitudinal direction L, as illustrated in the .

Subsequently, the pipe 38 communicates with a fluid inlet 75 formed on a wall of the endpiece 7, and a channel 76, shown in dotted lines on the , is formed within the body of the tip to fluidly connect the fluid inlet to the projection elements 37 and allow the cleaning fluid to be projected onto the glazed surface.

Of course, the invention is not limited to the examples which have just been described and many adjustments can be made to these examples without departing from the scope of the invention.

The invention, as it has just been described, achieves the goal it had set itself, and makes it possible to propose a connection system between an arm and a wiper blade of a wiping system comprising an end piece comprising damping means making it possible to prevent damage to a glazed surface that the wiper blade is responsible for wiping. Variants not described here could be implemented without departing from the context of the invention, provided that, in accordance with the invention, they include a connection system in accordance with the invention.

Claims

Connection system (4) of a wiper blade (3) on an arm (2) of a wiping system (1) for a glazed surface, said connection system comprising a yoke (5) extending longitudinally between a first end (13) configured to be connected to the arm (2) of the wiper system (1) and a second end (14) opposite the first end (13), said yoke (5) comprising at least a coupling portion (51) which is configured to form a cavity for receiving a connector (100) associated with the wiper blade (3),
characterized in that the connection system (4) comprises an end piece (7) placed against the coupling portion (51), at the second end (14) of the yoke (5), the end piece (7) comprising damping means (17) of an impact of the coupling portion (51) on the glazed surface.
Connection system (4) according to claim 1, in which the end piece (7) is configured to block the wiper blade (3) longitudinally with respect to the yoke (5).
Connection system (4) according to claim 1 or 2, in which the damping means comprise a protruding portion configured to come into contact with the glazed surface during an impact of the coupling portion (51) on the glazed surface, so that it is the first in contact with the glazed surface in the event of the arm falling during a worn blade replacement operation.
Connection system (4) according to any one of the preceding claims, in which the end piece (7) comprises a body (16) which extends in a longitudinal direction, the damping means (17) comprising an extension of the body (16) in at least one direction transverse to the longitudinal direction.
Connection system (4) according to the preceding claim, in which the coupling portion (51) is formed by two side walls (18) connected to each other by an upper wall (19) so as to form the cavity for receiving the connection (100), the coupling portion (51) having a lower plane (P) passing through a free end of the side walls, and in which the damping means (17) form a vertical extension of the body (16) in extending on the other side of the lower plane (P) with respect to the body (16).
Connection system (4) according to the preceding claim, in which the damping means (17) extend on the other side of a plane of elongation of one of the side walls (18) with respect to the body ( 16).
Connection system (4) according to any one of the preceding claims, in which at least the damping means (17) of the endpiece (7) are made of a material different from the material of the yoke (5), the material of the damping means (17) being more flexible than the material of the yoke (5).
Connection system (4) according to any one of the preceding claims, in which the damping means (17) of the end piece (7) comprise a longitudinal extension facing the coupling portion (51) forming a means deflector (27).
Connection system (4) according to the preceding claim, in combination with claim 5, in which the deflector means (27) comprises at least one oblique portion (28, 29) extending longitudinally along the yoke (5), and having an oblique orientation relative to the side wall (18) of the yoke (5).
Connection system (4) according to claim 8, in which the deflector means (27) comprises at least one air inlet (34), at least one air outlet (36) and at least one channel (35) configured to provide air circulation between the air inlet (34) and the air outlet (36).
Connection system (4) according to any one of the preceding claims, comprising a fixing clip (25) ensuring the locking of the connection between the end piece (7) and the second end (14) of the yoke (5).
Connection system (4) according to any one of the preceding claims, in which the end piece (7) comprises a projection element (37) of a cleaning fluid, the end piece (7) being configured to house at least partially a pipe (38) of cleaning fluid, said pipe (38) being connected to the projection element (37).