WO2008052957A1

WO2008052957A1 - Wiper system for a window of a motor vehicle

Info

Publication number: WO2008052957A1
Application number: PCT/EP2007/061594
Authority: WO
Inventors: Jean-Pierre Eustache; Denis Grandjean
Original assignee: Valeo Systemes D'essuyage
Priority date: 2006-10-30
Filing date: 2007-10-29
Publication date: 2008-05-08
Also published as: FR2907736B1; FR2907736A1

Abstract

The invention relates to a wiper system for a window of a vehicle, comprising a drive shaft (1) rotationally driven in an alternating manner, in a bearing body (3), by a drive device, for rotationally driving a wiper blade-holding arm. According to the invention, the drive shaft (1) constitutes a main shaft whose direction is fixed with respect to the bearing body (3), and the system comprises a secondary shaft (4) extending above the bearing body (3) in the general direction of the main drive shaft (1) and intended to receive, on its upper end (40), said wiper blade-holding arm; and a mechanism (5-10, 50) for varying the inclination of the axis (A2) of the secondary shaft (4) as a function of the angular position of the main shaft (1) about its axis of rotation (A1).

Description

WIPER SYSTEM FOR VEHICLE GLASS

AUTOMOBILE

The present invention relates to a wiper system for a motor vehicle, particularly suitable for wiping windshield complex surface, such as a panoramic windshield.

A windshield is said to be panoramic when it includes portions of lateral ends which return to the sides of the vehicle, and therefore has on each side a very strong bending area.

For this type of windshield, the problem is to be able to effectively wipe not only the front face of the glazing, generally low curvature, but also these portions of lateral extremities very strong curvature.

One of the criteria for obtaining quality wiping lies in the angle of attack of the blade, namely the inclination of the blade at its point of connection with the arm-swing compared to normal to the surface of the windshield. When a complete scan in a direction from the rest position of the wiper to the extreme position, an improvement of the wiping quality is obtained if it is possible to vary this angle of attack of the wiper. broom based on the windshield area in which one is located.

Many wiper blade drive systems for varying the angle of attack of the broom have already been proposed.

Document FR 2 753 942 discloses a system for wiping a window of a motor vehicle, of the type in which a wiper blade is mounted at the upper end of a drive shaft. which is rotated alternately in a bearing body about its axis by a motor device via a control crank attached to the drive shaft and extending substantially perpendicular to that axis of rotation. training. In this known system, the bearing body contains a mechanism which, on the one hand, guards the drive shaft in rotation about its drive axis, and on the other hand, causes a variation of the drive shaft. inclination of the drive shaft relative to a fixed reference axis relative to the bearing body and substantially perpendicular to the plane of the window, depending on the angular position of the drive shaft about its axis. More specifically, the drive shaft is pivotally mounted about at least one axis which is perpendicular to the axis of the drive shaft, and there is provided a cam device which controls the pivoting of the drive shaft to vary the inclination of the shaft axis relative to the reference axis as a function of the position of the shaft about its axis of rotation.

In such a system, the control crank is necessarily above the bearing body, in a visible area from outside the vehicle, and it is necessary to provide caches. In addition, the number of parts required is relatively high, which increases the cost of the overall system. Finally, the permanent oscillation of the drive shaft requires an expensive slide to compensate for play and wear.

The present invention aims to provide a simple and compact wiper system, easily adaptable to configurations in which the control crank may be either above the bearing body, or below this body .

To do this, the present invention relates to a wiper system for motor vehicle window, of the type comprising a drive shaft intended to be rotated alternately in a bearing body, about its axis rotation device by a motor device for rotating a brush arm, characterized in that said drive shaft constitutes a main drive shaft mounted in the system so that its axis of rotation maintains a fixed direction relative to the bearing body, and in that the system further comprises:

- A secondary drive shaft extending above the bearing body in the general direction of the main drive shaft and for receiving, on its upper end, said brush holder arm; and

a mechanism for varying the inclination of the axis of the secondary drive shaft as a function of the angular position of the main drive shaft about its axis of rotation.

In a preferred embodiment, the main drive shaft extends through a shaft of the bearing body, and the mechanism comprises:

a cam fixed with respect to the bearing body and extending in a plane perpendicular to the axis of the main drive shaft, the cam having a non-concentric cam profile with respect to the axis of the shaft; main training;

- A sliding member movable in translation parallel to the axis of the secondary drive shaft, and carrying at its lower end a sliding element adapted to slide on the cam profile; - A clevis member linked to rotation, above the shaft, to the main drive shaft;

a movable element carrying the secondary drive shaft, and held by the yoke element so as to be rotatably connected to the main drive shaft and able to rotate about an axis orthogonal to the axis of the main drive shaft and the axis of the secondary drive shaft; and

means for keeping the sliding element in contact with the cam profile.

In a first possible embodiment, the sliding element is mounted on a lower end of the secondary drive shaft opposite to that for carrying the wiper arm wiper.

In a second embodiment, the sliding element is carried by the movable member, remotely relative to the secondary drive shaft.

Advantageously, the means for keeping the sliding element in contact with the cam profile comprise a spring.

The bearing body preferably forms the lower part of a housing enclosing said mechanism, and the system comprises a sealing means closing the housing.

In another embodiment according to the principles of the invention, the bearing body is an integral part of a monoblo support plate forming a support for the motor device.

The support plate preferably comprises a longitudinal structure on an end portion of which is located the bearing body.

This longitudinal structure preferably has a tubular shape.

The monoblue support plate can be made of a metallic material.

In a variant, the one-piece support plate will be made of plastic material.

In embodiments where the variation mechanism of the inclination of the secondary axis comprises a cam, said cam may be an insert attached to the inside of the bearing body. For the variant in which the material used for the support plate is a plastic material, the cam profile may nevertheless be integrated into the bearing body, thus also forming part of the monoblue support plate.

The invention and the advantages it provides will be better understood from the following description of an exemplary non-limiting embodiment of a wiper system according to the invention, with reference to the accompanying figures, in which: - Figures 1 and 2 schematically illustrate a partial perspective view of a system according to a first possible embodiment according to the invention, respectively in two extreme positions of the system;

- Figure 3 illustrates the system of Figures 1 and 2, equipped with a sealing means;

- Figure 4 illustrates an alternative embodiment of the étanditéité means;

- Figures 5 and 6 schematically illustrate a partial perspective view of a system according to a second possible embodiment according to the invention, respectively in two extreme positions of the system.

- Figure 7 illustrates a system according to a third possible embodiment, incorporating a support plate;

FIG. 8 represents the support plate of the system of FIG. 7;

- Figures 9 and 10 schematically illustrate a partial perspective view of a system according to a fourth possible embodiment according to the invention, respectively in two extreme positions of the system;

- Figure 11 illustrates the system of Figures 9 and 10, equipped with a sealing means.

For ease of understanding, the elements common to all of the figures bear the same references. It should be noted that the various representations are only partial, in that all the constituent elements of the wiper device are not systematically represented for obvious reasons of clarity. This is particularly the case of the wiper arm and the wiper blade.

Referring to the figures, a wiper system for motor vehicle window conventionally comprises a drive shaft 1 for driving in alternating axial rotation about its axis of rotation Al between two extreme positions. For this, the shaft 1 is also coupled to a motor device (not shown), conventionally constituted by an electric gear motor, via a control crank 2 fixed to the drive shaft 1 and extending substantially perpendicular to the axis A1. The drive shaft 1 conventionally extends through a shank 30 of a bearing body 3, intended to be itself rigidly attached to the motor vehicle, by For example, in this preferred embodiment, drive shaft 1 is mounted in the system so that its axis of rotation Al maintains a fixed direction relative to to the bearing housing 3.

According to the invention, the shaft 1 constitutes a main drive shaft, and the system wiper further comprises a secondary drive shaft 4 for receiving, on its upper end 40, a brush holder arm (not shown). As can be seen in the various figures, the secondary drive shaft 4 extends above the bearing body 3, in the general direction of the axis A1 of the main drive shaft 1.

Nevertheless, the system further comprises a mechanism that makes it possible to vary the inclination of the axis A2 of the secondary shaft 4 as a function of the angular position of the main drive shaft 1 around its axis. rotation Al.

This mechanism, in the non-limiting embodiment shown in the figures, comprises in the first place a cam 5, fixed relative to the bearing body 3, and which extends in a plane perpendicular to the axis Al of the main drive shaft 1. The cam 5 is here advantageously fixed directly in the bearing body 3. The cam 5 has a cam profile 50 that is non-concentric with respect to the axis A1 of the main drive shaft 1, and function of the effective curvature of the windshield surface to be wiped.

The mechanism further comprises a sliding element 6 (see Figure 2) mounted on a lower end of the secondary drive shaft 4 opposite to that intended to carry the wiper blade arm, movable in translation on along the axis A2 of the secondary drive shaft 4. The sliding element 6 carries, at its lower end, a sliding element 7 adapted to slide on the cam profile 50.

A clevis member 8 of the mechanism is connected above the shaft 30, to the main drive shaft 1, preferably at its upper end, so as to be integral in rotation with the drive shaft. main 1 about its axis of rotation Al.

This clevis member 8 maintains a movable member 9 carrying the secondary drive shaft 4. The movable member 9 is rotatably connected to the main drive shaft 1 and movable in rotation about a axis A3 of the clevis element 8, this axis A3 being orthogonal to the axis A1 of the main drive shaft 1 and to the axis A2 of the secondary drive shaft 4.

Finally, the mechanism comprises means 10, for example a spring, for holding the sliding element 7 always in contact with the cam profile 50.

With such a mechanism, when the main drive shaft 1 is rotated about its axis A1 between the first extreme angular position shown in Figure 1 and the second extreme angular position shown in Figure 2, the sliding element 7 will be caused to slide along the profile 50 of the cam fixed 5, which will cause a variation of the inclination of the secondary drive shaft 4 carried by the movable member 9.

Indeed, the distance between the attachment point of the movable member 9 on the main drive shaft 1 on the one hand, and the contact point of the sliding element 7 on the cam profile 50 is not constant, since the cam profile 50 does not extend concentrically to the axis A1. Thus, sliding of the sliding element 7 on the cam profile 50 can only take place in the as the length of the secondary axis 4 is variable, and this secondary axis is free to rotate. It is the sliding mobility of the sliding element 6 that automatically adjusts the length of the secondary drive shaft so that the element 7 is always in contact with the cam profile. Furthermore, the pivot of the carrier element 9 about the axis A3 effectively allows the inclination of the axis 4.

Advantageously, the sliding element 7 has a shape of sphere or half-sphere, and the cam profile is obtained by a groove of the cam having substantially concave walls of complementary shape to the sliding element.

As has been said previously, the cam profile 50 must be adapted for each windshield surface to be wiped. In the exemplary embodiment shown, it can be seen that when the main shaft 1 has turned from the value of the scanning angle between its first extreme position (FIG. 1) and its second extreme position (FIG. 2), the inclination the A2 axis of the secondary shaft 4 has varied over a range of variation of about 30 °.

Compared to known systems, it is easy to see that the number of parts required is low, and that the arrangement between these parts is very simple and provides a very compact system. In such a system according to the invention, the control crank 2, through which the main drive shaft 1 is rotated alternately, is located very advantageously below the bearing body 2, that is to say say in an area not visible from the outside when the wiper device is mounted on the motor vehicle.

This results in particular a simplification at the level of the sealing of the system, as will be explained now, with reference to Figures 3 and 4, which illustrate two possible variants to achieve a sealed cover on the device of Figures 1 and 2:

In the embodiment of Figure 3, the bearing body 3 is covered with a cover 11 fixed on the bearing body 3 so as to envelop the entire tilting mechanism. The upper part of the cover 11 is open so as to pass the upper portion of the secondary drive shaft 4. A cover 12 is also attached to the secondary drive shaft 4, and caps the top of the cover 11. The inner shape of the cover 12 is complementary the outer shape of the cover 11 in the contact zone so as to perform on the one hand, the sealing function, and on the other hand, to allow the cover 12 to move on the cover 11 during variations of inclination of the secondary shaft 4.

In the embodiment of Figure 4, a fixed cover 13 is mounted on the bearing body 3 so as to wrap the assembly of the connecting mechanism, with an upper part open for the passage of the shaft d secondary training. A flexible seal 14 maintained on the one hand, on the upper part of the cover 13, and on the other hand on the secondary drive shaft 4 provides the seal while allowing variations of inclination of the shaft 4.

In both embodiments, the combination of the cover 11 or 13 covered cover 12, or the seal 14, and the bearing body 3, to form a housing containing the mechanism. The attachment lug 31 of the bearing body 3 also serves to fix the wiper system on the motor vehicle.

Different variants of the wiper system according to the invention described with reference to Figures 1 to 4 can be envisaged without departing from the scope of the invention. In particular, the cam 5 has been described with a groove 50 forming a cam profile of complementary shape to the sliding element 7, but not allowing the retention of this sliding element against the cam profile, hence the need to provide a elastic member of the spring type 10. Alternatively, it could be envisaged that the cam profile traps the sliding element 7.

A second possible embodiment of a system according to the invention will now be described with reference to FIGS. 5 and 6, partially representing the system respectively in two extreme positions:

As in the first embodiment, there is the main drive shaft axis of rotation Al (Figure 6) which extends through a shaft 30 of the bearing body 3, and retaining a direction fixed relative to the bearing body 3, and the control crank 2 for the alternating rotation drive of the main shaft. There is also the secondary drive shaft 4 of A2 axis, intended to receive the brush holder arm shown schematically under the reference 4. In the case of Figure 6, the axes Al and A2 are close to the alignment . Finally, there is a mechanism for varying the inclination of the axis A2 according to the angular position of the main drive shaft about its axis of rotation. This mechanism comprises a fixed cam relative to the bearing body, not visible in Figures 5 and 6, but similar to the cam 5 of the first embodiment, and a sliding element 6 ', movable in translation no more on the axis A2 but parallel to the axis A2 of the secondary shaft, this element 6 'still carrying at its lower end a sliding element 7 adapted to slide on the cam profile. Thus, the sliding element 6 'is no longer mounted on the lower end of the secondary shaft 4, but offset relative thereto. The secondary shaft 4 is placed above the shaft 30. A clevis element 8 ', similar in function to the clevis element 8 of the first embodiment, is rotatably connected to the shaft. main drive, above the drum 30. Finally, a movable member 9 ', similar in function to the movable member 9 of the first embodiment, is held by the clevis member 8' so as to be rotationally connected. to the main drive shaft, and movable in rotation about an axis A3 orthogonal to the two axes A1 and A2. The movable element 9 'is not only carrying the secondary drive shaft 4, but also the sliding element 9'. Unlike the first embodiment, the secondary shaft 4 is carried by the movable element 9 substantially in the extension of the main shaft, and it is the sliding element 6 'which is offset relative to the Al axis. The mechanism according to this second mode also preferably has means (not shown) for holding the sliding member 7 in contact with the cam profile. The system may also be equipped with the same type of sealing means as those presented with reference to FIGS. 3 and 4.

In the various embodiments of the system described in connection with Figures 1 to 6, the system is intended to be rigidly secured on the one hand to the motor vehicle, through the fixing lug 31 described above , and secondly to a support device or platinum (not visible in the previous figures), via another protrusion of the bearing body 3, located opposite the attachment lug 31 as the show the various figures 1 to 6. This support device, itself secured to the motor vehicle, usually also serves to support the motor device for driving in alternating rotation, and the associated linkage for mechanically connecting the motor device shaft to the control crank 2 of the system.

Figures 7 and 8 illustrate a particularly advantageous embodiment of the present invention to provide a very complete and compact system, incorporating this support device:

Referring firstly to Figure 7, we find on the right side of the figure the constituent elements similar to the two embodiments of the system already described above, namely:

a main drive shaft having a rotation axis A1, extending through a shank 30 of a bearing body 3;

a secondary drive shaft 4 of axis A2, extending above the bearing body 3;

a mechanism for varying the inclination of the axis A2 of the secondary drive shaft comprising in particular the cam profile 50, the sliding element movable in translation along the axis A2 and carrying at its lower end the sliding element 7 adapted to slide on the cam profile, and the clevis member 8 "and the movable member 9" in rotation about the axis A3 orthogonal to the axes A1 and A2.

Note some differences in the structures of the clevis member 8 "and the movable member 9" relative to the elements 8, 9 and 8 ', 9' described with reference to the previous figures. Nevertheless, these two elements have exactly the same function, namely to allow the inclination of the secondary shaft 4 when the sliding element 7 slides on the cam profile 50.

As in the embodiments described above, the main drive shaft is adapted to be rotated by a motor device 100, via an associated linkage mechanism comprising in particular the crank 110 the motor device 100, and a rod 120 whose ends are respectively rotatably connected to the crank 110 and the control crank 2. As a result, when the shaft (not visible) of the motor 100 rotates in alternating rotation, the main shaft is rotated alternately about its axis Al. According to a very advantageous characteristic of this embodiment of a system according to the invention, the bearing body 3 with its shaft 30 and its fixing means 31 'equivalent to the fastening atrium 31 seen above, is an integral part of a monoblade plate 130 forming a support device for the motor 100 and the associated linkage mechanism 110, 120.

The monoblade plate 130 preferably has the shape of an elongate structure, for example tabular, on an extremal portion of which is the bearing body 3 carrying the cam profile and the barrel 30.

In the embodiment shown in FIGS. 7 and 8, this monobloc plate 130 is preferably obtained by molding in plastic material, which advantageously makes it possible to also integrate the shape of the cam profile 50 inside the 3. The molding may be carried out either by conventional methods, either by injection assisted by a fluid (gas or water).

Other variants of embodiments are however conceivable:

In particular, it is possible to provide an attached cam, of the type of those shown under reference numeral 5 in FIGS. 1 and 2, to be fixed inside the bearing body, the latter nevertheless still forming an integral part of the plate. monoblœ 130. The platen can thus be made of plastic material or a metal material, for example aluminum or Zamak.

The support plate thus constitutes a monoblo component advantageously integrating the bearing of the main axis, the points of attachment to the motor vehicle (fixing means 31 'already described, and the fixing means 32 located at the opposite end). of the rod of the plate 130), or the cam profile 50 when the platen is molded plastic, and which simultaneously performs the functions of attachment to the body, support of the motor device, the linkage mechanism and the various elements to vary the inclination of the secondary axis A2. It is thus possible to consider standardizing the system by providing support plates common to several vehicles, the diversity being provided in particular by the shape given to the cam profile 50.

As seen in Figure 7, the motor device 100 is preferably oriented so that its output shaft is substantially parallel to the longitudinal axis of the support plate, thereby reducing the total size of the system . This motor device is fixed on the plate by a fastening mechanism preferably at two points Fl and F2, the fastening being effected by clamping an enveloping cradle having two open rings enclosing the longitudinal structure of the plate 130, and a plate 111 able to be secured to said cradle, for example via clamping screws. The tubular shape of the plate 130 gives an additional degree of freedom for adjusting the center-to-center of the system and the installation of the complete system on the vehicle.

The various embodiments described above can be combined with each other without departing from the scope of the present invention. In particular, it is possible to replace the elements 8 "and 9" of FIG. 7 allowing the inclination of the secondary axis by any combination of elements 8, 9 or 8 ', 9' described in the other two modes. of realization. In addition, the system shown in Figure 7 may also be provided with a sealing means as described with reference to Figures 3 and 4. Finally, the fact that the bearing body 3 is an integral part of a support plate monobloc is independent, although particularly well adapted, from choice of constituent elements of the mechanism of variation of the orientation of the secondary axis. Thus, even if this embodiment has been described in relation to a mechanism using a cam, a person skilled in the art can easily generalize the principle to any type of mechanism, the essential point being that the support plate integrates at least the body of bearing of the main axis.

In the embodiments described above, the control crank 2 extends below the bearing body 3. Nevertheless, there are certain configurations in which the control crank will have to be positioned above this body of the invention. bearing. Figures 9 to 11 illustrate a fourth embodiment according to the present invention, providing such a possibility.

This fourth embodiment is very similar to the mode described with reference to Figure 7, at least with respect to the constitution of the mechanism for varying the inclination of the secondary drive shaft A2. Referring firstly to Figures 9 and 10, there are the constituent elements similar to the embodiments of the system already described above namely:

a main drive shaft 1 of axis of rotation A1, extending through a shaft 30 of a bearing body 3;

a secondary drive shaft 4 of axis A2, extending above the bearing body 3;

In a different way, however, the control crank 2 'extends here above the bearing body 3, and moreover is advantageously integrated in the same piece as the clevis element 8 ". "clevis element 8" has an opening 80 ", for example oblong, through which the secondary shaft A2 extends, to allow and guide the secondary axis A2.This element further comprises a lateral extension forming the crank 2 'Id, the piece simultaneously forming the element 8 "and the crank 2' is integral in rotation with the prindpal shaft 1, but remains in a plane substantially perpendicular to the axis Al.

The system also comprises a sealing means, horn illustrated in Figure 11. Given the positioning of the control crank 2 'at the clevis member, the sealing means comprises a fixed hood id 13 ', preferably forming a flexible seal mounted on the bearing body 3, below the connection between the clevis member 8 "and the movable member 9". Finally, note that although the system as shown in Figures 9 to 11 is intended to be rigidly secured on the one hand to the motor vehicle, through the attachment lug 31 previously, and secondly to a support device, it can also adapt this system so that it directly integrates the support device, in the same spirit of what has been described with reference to Figures 7 and 8.

Claims

[0001] Wiping system for a motor vehicle window, of the type comprising a drive shaft (1) intended to be driven in alternating rotation, in a bearing body (3), around its axis of rotation (Al) by a motor device (100), for rotating a brush-carrying arm, characterized in that said drive shaft (1) constitutes a main drive shaft mounted in the system so that its axis of rotation (Al) maintains a fixed direction with respect to the bearing weight (3), and in that the system further comprises:

- a secondary drive shaft (4) extending above the bearing body (3) in the general direction of the main drive shaft (1) and intended to receive, on its upper end (40) , said brush-carrying arm; And

- a mechanism (5-10, 50; 5,

6', 7, 8', 9', 10, 50; 5, 7, 8", 9", 10, 50) to vary the inclination of the axis (A2) of the secondary drive shaft (4) as a function of the angular position of the drive shaft main drive (1) around its axis of rotation (Al).

[0002] Wiping system according to claim 1, characterized in that the main drive shaft (1) extends through a barrel (30) of the bearing body (3), and in that the mechanism includes:

- a cam (5) fixed relative to the bearing body (3) and extending in a plane peipendicular to the axis (Al) of the main drive shaft (1), the cam (5) having a cam profile (50) not concentric with respect to the axis (Al) of the main drive shaft (1);

- a sliding element (6; 6') movable in translation parallel to the axis (A2) of the secondary drive shaft (4), and carrying at its lower end a sliding element (7) capable of sliding on the cam profile;

- a yoke element (8; 8'; 8") rotatably linked, above the barrel (30), to the main drive shaft (1);

- a movable element (9; 9'; 9") carrying the secondary drive shaft (4), and held by the yoke element (8; 8'; 8") so as to be linked to rotation to the main drive shaft (1) and movable in rotation around an axis (A3) orthogonal to the axis (Al) of the main drive shaft (1) and to the axis (A2) the secondary drive shaft (4); And

- means (10) intended to maintain the sliding element (7) in contact with the cam profile (50). [0003] Wiping system according to claim 2, characterized in that said sliding element (6) is mounted on a lower end of the secondary drive shaft (4) opposite that intended to carry the brush arm wiping.

[0004] Wiping system according to claim 2, characterized in that said sliding element (6') is carried by the movable element (9'), offset relative to the secondary drive shaft (4 ).

[0005] Wiping system according to any one of claims 2 to 4, characterized in that the means intended to maintain the sliding element in contact with the cam profile (50) comprise a spring (10).

[0006] Wiping system according to any one of claims 2 to 5, characterized in that the sliding element (7) has the shape of a sphere or half-sphere, and in that the cam profile is obtained by a groove in the cam having substantially concave walls of complementary shape to the sliding element

(7).

[0007] Wiping system according to any one of the preceding claims, characterized in that the main drive shaft (1) is intended to be driven by a motor device via a control crank ( 2; T) fixed on the main drive shaft (1) and extending substantially peipendicular to the axis (Al) of the main drive shaft (1).

[0008] Wiping system according to claim 7, characterized in that the control crank (2) extends below the bearing body (3).

[0009] Wiping system according to any one of claims 3, 5 and 6 taken in combination with claim 2, characterized in that the control crank (2') extends above the bearing surface ( 3), and is an integral part of the screed element (8").

[0010] Wiping system according to any one of claims 1 to 8, characterized in that the bearing body (3) forms the lower part of a housing enclosing said mechanism, and the system comprises a sealing means closing the case.

[0011] Wiping system according to claim 10, characterized in that the sealing means comprises a fixed cover (13) mounted on the bearing body (3) so as to envelop the entire mechanism, with a part upper open for the passage of the secondary drive shaft (4), and a flexible seal (14) maintained on the one hand, on the upper part of the cover (13), and on the other leaves on the secondary drive shaft (4) to achieve sealing while allowing variations in inclination of the secondary drive shaft (4).

[0012] Wiping system according to claim 10, characterized in that the sealing means comprises a fixed cover (11) mounted on the bearing body (3) so as to envelop the entire mechanism, with a part upper open for the passage of the secondary drive shaft (4), and a cover (12) fixed on the secondary drive shaft (4), covering the upper part of the cover (11), the internal shape of the cover (12) being complementary to the external shape of the cover (11) in the contact zone.

[0013] Wiping system according to claim 9, characterized in that it comprises a sealing means in the form of a fixed cover forming a flexible seal positioned mounted on the bearing body (3), below the connection between the yoke element (8") and the movable element (9").

[0014] Wiping system according to any one of the preceding claims, characterized in that the bearing body (3) comprises a fixing lug (31; 31') for fixing the system to the motor vehicle.

[0015] Wiping system according to any one of the preceding claims, characterized in that the bearing body (3) is an integral part of a one-piece support plate (130) forming a support for the motor device (100).

[0016] Wiping system according to claim 13, characterized in that the support plate (130) comprises a longitudinal structure on an end portion of which the bearing body (3) is located.

[0017] Wiping system according to claim 14, characterized in that said longitudinal structure has a tubular shape.

[0018] Wiping system according to any one of claims 13 to 14, characterized in that the motor device is secured to said longitudinal structure by a two-point fixing mechanism (Fl, F2).

[0019] Wiping system according to claim 16, characterized in that the two-point fixing mechanism comprises an enveloping cradle comprising two open rings capable of enclosing said longitudinal structure, and a plate (111) capable of being secured to said cradle.

[0020] Wiping system according to any one of claims 13 to 17, taken in combination with claim 12, characterized in that the support plate comprises two fixing means (31', 32) at its two ends, 'one of the fixing means corresponding to said fixing ear (31') of the body of bearing (3). [0021] Wiping system according to any one of claims 13 to 18, characterized in that the one-piece support plate is made of metallic material. [0022] Wiping system according to any one of claims 13 to 18, characterized in that the one-piece support plate is made of plastic material. [0023] Wiping system according to any one of claims 13 to 20, taken in combination with claim 2, characterized in that said cam (5) is an insert fixed inside the bearing shell (3 ). [0024] Wiping system according to claim 20 taken in combination with claim 2, characterized in that said cam profile (50) is integrated into the bearing body (3), thus forming part of the one-piece support plate ( 130).