Small Surface Wipers

Abstract

A wiper blade (20) for a wiping system, in particular for wiping a camera of a motor vehicle, the wiper blade having a connection device (22) suitable for releasably connecting the wiper blade (20) to a drive shaft (1), the connection device (22) having a first orientation that allows attachment / detachment to / from the drive shaft (1) and a second orientation that prevents such attachment / detachment.

Description

[Technical field]

[0001] The present invention relates to the field of wiping, and more particularly to the field of wiping systems for motor vehicles. The present invention relates to a wiping system comprising a shaft and a blade, as well as to the shaft and blade of such a wiping system itself. [Background technology]

[0002] Automotive vehicles are generally equipped with a wiping system that comprises at least one blade for wiping shiny surfaces such as windshields. The wiper blade is driven between two end positions by a drive motor via an arm. The wiper blade is connected to the arm by a ball-and-socket joint that requires a complex connector design. These wiping solutions are well suited for large glass surfaces, but less suitable for small surfaces due to their size, cost and complexity. However, there are other wiping needs, especially for small surfaces. For example, in the context of autonomous vehicles, ensuring the surface condition of several cameras, and possibly lighting systems, is important since the safety of these autonomous vehicles depends heavily on these devices. Summary of the Invention [Problem to be solved by the invention]

[0003] A general object of the present invention is to provide a reliable and simple wiping solution that is particularly suitable for wiping small surfaces such as cameras for autonomous vehicles. [Means for solving the problem]

[0004] For this purpose, a wiper blade for a wiping system, in particular for wiping the camera of a motor vehicle, is proposed.

[0005] According to one aspect of the invention, the blade is provided with a connection device suitable for releasable connection of the wiper blade to a drive shaft, said connection device having a first orientation that allows attachment and detachment to the drive shaft and a second orientation that precludes such attachment and detachment.

[0006] The use of such a blade allows the wiper blade to be quickly and easily installed and removed without tools while ensuring a secure and reliable attachment of the wiper blade to the drive shaft.

[0007] According to one embodiment, the connecting device further comprises an opening at one end of the wiper blade with at least two enlarged portions for mounting and dismounting the wiper blade.

[0008] According to another embodiment, the blade further comprises anti-rotation means, in particular by at least one protrusion in the opening of the connecting device of the blade or by a collar with at least one housing for cooperating with at least one stop of the drive shaft.

[0009] According to another embodiment, the blade further comprises a mount forming a guide for releasably translatably mounting a wiping element intended to come into contact with the surface to be wiped.

[0010] According to another aspect of the invention, there is also proposed a wiping system comprising a drive shaft and a wiper blade as described above, said blade being releasably mounted on said drive shaft.

[0011] According to one embodiment, the system further comprises an operating configuration, and in order to lock the wiper blade in this operating configuration, elastic means exert a force on the wiper blade tending to hold it against at least one stop, in particular a pin, of the drive shaft.

[0012] According to one embodiment, the wiper blade and the drive shaft are provided with respective connection devices configured to enable assembly and / or disassembly of the wiper blade and the drive shaft by sequential actuation of the wiper blade and the drive shaft by a first translational relative movement parallel to the axis of the drive shaft.

[0013] According to one embodiment, the wiper blade and the drive shaft are provided with respective anti-rotation means configured to form an anti-rotation device for the wiper blade relative to the drive shaft in said operative configuration.

[0014] Advantageously, the drive shaft comprises a first portion having a groove forming the anti-rotation means, and the wiper blade comprises an opening having a protrusion of a size corresponding to the groove, configured to fit into the groove in said operative configuration of the wiping system and form an anti-rotation device.

[0015] Advantageously, the drive shaft is provided with a pin forming the anti-rotation means and a locking stop, and the wiper blade is provided with an anti-rotation collar having a recess configured to cooperate with the pin in said operative configuration of the wiping system, thereby forming the anti-rotation means and a means for locking the wiper blade to the drive shaft.

[0016] According to another embodiment, the elastic means comprises a resilient washer, in particular arranged between two flat washers.

[0017] As mentioned above, a drive shaft for the wiping system is also proposed.

[0018] According to another aspect of the invention, there is also proposed a camera or lighting device for an autonomous vehicle, comprising at least one wiping system as described above.

[0019] According to another aspect of the invention, there is also proposed a vehicle, preferably an autonomous vehicle, equipped with a wiping system, a camera or a lighting device as described above.

[0020] These objects, features and advantages of the present invention will be explained in detail in the following description of specific non-limiting embodiments with reference to the accompanying drawings. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 illustrates a wiping system according to a first embodiment of the present invention. [Diagram 2] 2A and 2B are diagrams showing a mount of a wiper blade of a wiping system according to a first embodiment of the present invention; [Diagram 3] FIG. 2 illustrates a wiper blade of the wiping system according to the first embodiment of the present invention. [Figure 4] FIG. 2 is a side view of a drive shaft of the wiping system according to the first embodiment of the present invention. [Diagram 5] FIG. 2 is a perspective view of a drive shaft of the wiping system according to the first embodiment of the present invention. [Figure 6] FIG. 2 is a plan view of a drive shaft of the wiping system according to the first embodiment of the present invention. [Figure 7] FIG. 2 is an exploded view of a resilient means of a wiping system according to a first embodiment of the present invention; [Figure 8] FIG. 2 is a diagram of a resilient means mounted on a drive shaft of a wiping system according to a first embodiment of the present invention. [Figure 9] FIG. 2 is another view of the resilient means mounted on the drive shaft of the wiping system according to the first embodiment of the present invention. [Figure 10] FIG. 2 is a diagram of a mount of a wiper blade mounted on a drive shaft of a wiping system according to a first embodiment of the present invention. [Figure 11] FIG. 2 is another view of the mount of the wiper blade mounted on the drive shaft of the wiping system according to the first embodiment of the present invention. [Figure 12] FIG. 2 is a side view of a mount for a wiper blade according to a variant of the first embodiment of the present invention. [Figure 13]FIG. 2 is another view of the mount of the wiper blade according to a variant of the first embodiment of the invention. [Figure 14] FIG. 2 shows a wiper blade of a wiping system according to a variant of the first embodiment of the invention. [Figure 15] FIG. 4 illustrates a wiping system according to a second embodiment of the present invention. [Figure 16] FIG. 13 shows an anti-rotation collar of a wiping system according to a second embodiment of the present invention. [Figure 17] FIG. 4 shows a portion of a wiper blade of a wiping system according to a second embodiment of the present invention. [Figure 18] FIG. 6 is a perspective view from above of a wiper blade of a wiping system according to a second embodiment of the present invention. [Figure 19] FIG. 6 is a perspective view from below of a wiper blade of a wiping system according to a second embodiment of the present invention. [Figure 20] FIG. 4 is a diagram of a drive shaft of a wiping system according to a second embodiment of the present invention. [Figure 21] FIG. 5 is a view of a drive shaft of a wiping system with elastic means and an anti-rotation collar according to a second embodiment of the invention. [Figure 22] FIG. 11 is another view of the drive shaft of the wiping system with resilient means and an anti-rotation collar according to a second embodiment of the present invention. [Figure 23] FIG. 11 is a diagram of a wiping system according to a third embodiment of the present invention. [Figure 24] FIG. 11 is a view of a lower shaft portion of a shaft of a wiping system according to a third embodiment of the present invention. [Diagram 25] FIG. 11 is a view of an upper shaft portion of a wiping system according to a third embodiment of the present invention. [Figure 26] FIG. 11 is a diagram of a shaft of a wiping system according to a third embodiment of the present invention. [Figure 27] FIG. 11 is a diagram of a wiping system according to a variant of the third embodiment of the present invention. [Figure 28] FIG. 11 is a view of an end piece of a mount for a wiper blade according to a variant of the third embodiment of the invention. [Figure 29] FIG. 11 is a view of a mount for a wiper blade according to a variant of the third embodiment of the invention. [Diagram 30] FIG. 11 is a view of a blade of a mount for a wiper blade according to a variant of the third embodiment of the invention. [Diagram 31] FIG. 11 is another view of the mount of the wiper blade according to a variant of the third embodiment of the invention. [Diagram 32] FIG. 11 is a diagram of a wiper blade according to a variant of the third embodiment of the present invention. [Diagram 33] FIG. 11 is a diagram of a wiper blade with a supply hose connected thereto according to a variant of the third embodiment of the invention. [Diagram 34] FIG. 11 is another view of a wiping system according to a variant of the third embodiment of the present invention. [Diagram 35] FIG. 11 is another view of a wiping system according to a variant of the third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] For ease of description, the same reference numbers are used to denote identical or similar elements in various embodiments of the invention.

[0023] Figures 1 and 11 show a wiping system according to a first embodiment of the invention. This wiping system comprises, on the one hand, a drive shaft 1, also more simply called shaft 1 or arm, intended to be driven in rotation by a motor (not shown) on its own about its longitudinal axis, and, on the other hand, a wiper blade 20 with a wiping element 21 intended to remain in contact with a surface to be wiped (not shown). The wiper blade 20 is driven in rotation by the shaft 1, enabling the wiping element 21 of the wiper blade to wipe the surface. To facilitate the maintenance of the wiping system, the wiper blade 20 is releasably mounted on the shaft 1 in a user-friendly, simple and reliable manner, as will be described in more detail below.

[0024] FIG. 2 shows a mount 27 for the wiper blade 20, which comprises a first end forming a connection device 22 suitable for cooperating with the shaft 1, from which two flat, straight, parallel blades 28 separated by a slot 29 extend to a second end of the wiper blade 20 opposite the connection device 22. This connection device 22 has a substantially circular external shape in the form of a disk and more specifically comprises a central opening which performs the connection function. This opening has a substantially circular shape which is enlarged, i.e. increases the size of the opening, by a rectangular portion which forms two enlargements 23 relative to the circular opening. Between the two enlargements 23, the opening comprises a substantially circular portion interrupted by two segments or projections 24 which narrow the opening and extend towards the centre of the connection device 22. The mount 27 forms a rigid frame, preferably made of metal, for the wiper blade 20.

[0025] 3 shows a wiper blade 20, with a wiping element 21 mounted on a frame 27. For this purpose, the wiping element 21 is provided with a side groove that allows cooperation with the blade 28 of the mount 27. The wiping element 21 can thus slide along the blade 28 of the frame. The wiping element 21 is also provided, on the opposite side of the mount 27, with an extension that forms in a known manner a wiper blade for contacting the surface to be wiped. As a note, an end piece (not shown) can be optionally added to lock the wiping element 21 after it has been mounted on the mount 27.

[0026] Figures 4 to 6 show in more detail the shaft 1 of the wiping system. The shaft comprises a first end forming a connection device 2 intended to cooperate with a wiper blade 20. This first end comprises a first part having, on the periphery of the first end, a groove 4 extending parallel to the axis of the shaft 1. This end also comprises a cylindrical through opening 3 perpendicular to the axis of the shaft 1, intended to receive a pin 13, visible for example in Figure 9.

[0027] The shaft 1 then comprises a second portion 5 of circular cross section of smaller diameter, substantially corresponding to the diameter measured from one groove 4 of the first portion to the other groove. The shaft then comprises a third portion 6 of larger diameter than the second portion, substantially corresponding to the diameter of the first portion outside the grooves 4. Finally, the shaft comprises a fourth portion 7 of even larger diameter, which extends to a second end 9 intended for connection to a drive motor (not shown).

[0028] The wiping system further comprises elastic means shown in Figure 7 for mounting on the shaft 1 to cooperate with the wiper blades, as will be described below. According to this embodiment, the elastic means comprise two flat washers 14 arranged on either side of an elastic washer 15, for example of the onduflex® type.

[0029] Figures 8 and 9 show the shaft 1 fitted with the resilient means. It can be seen that a first flat washer 14 rests on the end of the larger diameter fourth portion 7 of the shaft, and two other washers 14, 15 rest on this first flat washer 14. Figure 9 further shows a pin 13 inserted in the above-mentioned cylindrical opening 3 of the shaft 1.

[0030] Figure 1 shows the wiping system fully assembled. Figures 10 and 11 show this wiping system assembled, but with some elements removed to better visualize some details, particularly the relative positioning of the various elements at their connection points. In particular, Figure 11 shows the positioning of the mount 27 on the shaft 1 as viewed from below.

[0031] The operation of the wiping system, and in particular the installation and removal of the wiper blade 20 onto the shaft 1, will now be described in detail.

[0032] The assembly of the wiping system involves first mounting the elastic means on the shaft 1, then mounting the pin 13 that fixes everything. At this stage, the wiping system is in the state shown in FIG. 9. Now the mount 27 of the wiper blade is mounted on the shaft 1. The connection device 22 of the mount is brought close to the corresponding connection device 2 of the shaft 1. For this purpose, the mount 27 is oriented so that the widened part 23 of the mount is located opposite the pin 13. The dimensions of the widened part are designed to allow the pin 13 to pass through an opening formed in the connection device 22 of the mount, which represents the female connector of the coupling. Moreover, in this orientation, the projections 24 become located opposite the groove 4, i.e. their shape is designed to allow the projections 24 to penetrate the groove 4. Thus, in this orientation of the elements, the mount 27 can be translated along the shaft 1. This translation is continued until the mount 27 comes into contact with the flat washer 14 of the elastic means. This movement is then continued until the connection device 22 of the mount 27 reaches the second part 5 of the shaft 1, by compressing the elastic means, more precisely the elastic washer 15, in this position the mount 27 is then rotated by a quarter turn and then released. The mount automatically moves upwards until it comes to rest against the pin 13 under the action of the elastic means. Thus, in the final position or operating configuration, which is particularly visible in Figs. 10 and 11, the mount 27 is at the height of the first part of the shaft 1 and no longer at the height of the second part 5 of smaller diameter. As a result of this quarter turn, the enlarged portion 23 of the opening of the connection device 22 is no longer aligned with the pin 13, but instead is located at a right angle. The area of ​​the smaller diameter opening of the connection device 22 is now located in line with the pin 13, so that the mount 27 can no longer be removed. On the other hand, the connection device 2 of the shaft 1 comprises four grooves 4 evenly distributed along the circumference of the shaft 1. Thus, when the mount 27 is rotated a quarter turn, the projections 24 of the connection device 22 of the mount 27 move from one groove 4 to the adjacent groove. Thus, as the mount moves upward, these projections 24 return to their position within the grooves 4.This geometry fulfills an anti-rotation function of the mount 27 relative to the shaft 1 and ensures that the mount 27 can be driven reliably by the shaft 1. Finally, the mount 27 remains constantly in abutment against the pin 13 under the elastic pressure of the elastic means, thus forming a locking means. This arrangement ensures correct positioning of the wiper blade, so that the wiping element 21 of the wiper blade remains in effective contact with the surface to be wiped.

[0033] Disassembly of the wiper blade is performed by the reverse operation: the wiper blade is first pressed against the elastic means to reach the second part 5 of the shaft 1, which allows it to rotate by a quarter turn and repositions the widened part 23 in alignment with the pin 13, thus allowing translational movement of the wiper blade and its removal from the shaft 1.

[0034] Naturally, the invention is not limited to the embodiment shown. In particular, the complementary shapes of the connection device 2 of the shaft 1 and the connection device 22 of the wiper blade 20 can differ from those shown, since these complementary shapes allow a first assembly / disassembly position and a second operating position. On the other hand, the transition from the first position to the second position can be performed with a rotation other than a quarter turn. Finally, the geometry of the elements can be different, as long as this geometry allows the anti-rotation function of the wiper blade to be fulfilled relative to the shaft in the second operating position. Any grooves, notches, etc. can therefore be used.

[0035] 12 to 14 show a variant of the first embodiment, where the wiper blade 20 is different and the shaft 1 remains the same; as can be seen in Figs. 12 and 13, the mount 27 of the wiper blade 20 has the same connection device 22 as in the previous embodiment, but with a different blade 28 for receiving the wiper element 21. The single blade 28 has a trough-like contour that is open on the side facing the surface to be wiped. Due to this shape, the blade 28 can have two lower retaining claws. This contour allows the insertion and translational movement of the wiper element 21, the base of which has a corresponding capital I-shaped cross section (with two vertical bars at both ends of the I). It should be noted that such a wiper blade has a smaller width than the wiper blades described above, which reduces the interference with the operation of the element to be wiped, for example the camera of the motor vehicle.

[0036] 15 to 22 show a second embodiment of the invention, which differs from the first embodiment mainly in that it comprises an anti-rotation collar 16 which is arranged between the wiper blade 20 and the pin 13 and thus performs an anti-rotation function. This solution makes it possible to simplify the geometry of the shaft 1, as will be explained below.

[0037] In this second embodiment, the wiper blade 20 first comprises a mount 27 and a wiping element 21 identical to those in the variant of the first embodiment. The anti-rotation collar 16, more particularly visible in Figure 16, is intended for mounting on the wiper blade 20, as shown in Figures 18 and 19. The anti-rotation collar comprises two aligned recesses 17 of V-shaped cross section, shaped to cooperate with the two ends of the pin 13, as seen in Figures 15, 21 and 22. The anti-rotation collar further comprises two extensions 19 forming connecting elements for mounting it on the wiper blade 20.

[0038] As shown in figures 17 to 19, the anti-rotation collar 16 is fixed to a connecting device 22 of a mount 27 of the wiper blade. For this purpose, the connecting device 22 is provided with two lateral openings 25 which come to be arranged opposite the extensions 19 of the anti-rotation collar 16, so that the anti-rotation collar can be fixed either by clipping or screwing or by other mechanical solutions or by gluing. The anti-rotation collar 16 is provided with a central opening which is exactly the same shape as the shape of the opening of the connecting device 22 of the mount, or which has a larger surface area which is superimposed on this opening of the connecting device 22.

[0039] By using this additional element, the anti-rotation collar 16, the shaft 1 of the wiping system, which is particularly visible in Fig. 20, has a simplified shape compared to that of the shaft 1 of the first embodiment. In particular, the first three sections of this shaft 1 are replaced by a single cylindrical section 6 provided with a cylindrical opening 3 for receiving a pin 13. The same elastic means, in particular the three washers 14, 15, 14 mentioned above, can be arranged around the shaft 1 as in the first embodiment.

[0040] The connecting device 22 of the wiper blade 20 is simplified as well. The connecting device no longer comprises a protrusion 24, since the shaft 1 no longer comprises the groove 4. The connecting device comprises a substantially circular central part, with a diameter slightly larger than that of the cylindrical part 6 of the shaft 1, and two enlarged parts 23, with a shape corresponding to that of the pin 13. The wiper blade is thus mounted on the shaft and then turned up to a quarter turn so as to position the housing 17 of the anti-rotation collar 16 under the end of the pin 13. When the wiper blade 20 is released, these recesses 17 cooperate with the pin 13, and this arrangement is firmly held in place under the action of the elastic means 15. In this way, the wiper blade cannot escape from the shaft 1 or rotate around it. Figures 21 and 22 show more precisely the relative positioning of the anti-rotation collar 16 and the shaft 1, in particular the pin 13. It is therefore clear that the anti-rotation collar is not only involved in the anti-rotation function described above, but also in the locking function of the wiper blade 20 in the operating configuration.

[0041] In one variation of the second embodiment (not shown), the anti-rotation collar 16 need not be a separate element, but may be formed integrally with all or part of the wiper blade, as in the embodiment shown in FIG.

[0042] 23 to 35 show a third embodiment of the present invention.

[0043] As shown in figures 24 to 26, this third embodiment differs from the previous two in that the shaft 1 takes the form of two separate main components attached to each other. The lower shaft part 7 is simplified with a perforated design, as shown in figure 24. The upper shaft part 6, shown in figure 25, comprises a connector for cooperating with the lower shaft part 7 to form a resulting shaft 1, shown in figure 26, of similar overall shape to the shaft of the second embodiment, when attached, for example by welding. In this embodiment, the pin 13 is no longer a separate element, but can be formed integrally with the upper shaft part. In fact, it is possible to mount the elastic means, in particular the three washers 14, 15, 14 mentioned above, on the lower shaft part 7 before the upper shaft part 6 is fixed, thus grouping the elastic means and completing the shaft 1.

[0044] 27 to 35 show a variant of the third embodiment, in which the wiper blade incorporates a device for distributing the cleaning fluid. To this end, the wiping system comprises a hose 30 for supplying the cleaning fluid to the wiper blade 20.

[0045] Thus, Figures 28 to 31 show a mount 27 for a wiper blade 20. The mount comprises a first end piece 32 with a connection device 22 for the shaft 1, then a cleaning liquid inlet part with an inlet connector 33, then an outlet 35 allowing the cleaning liquid to be directed towards the wiping element 21 and then the surface to be wiped. In this first end piece 32 two parallel blades 28 can be fixed. A second end piece 34 is placed at the opposite ends of said two blades 28 to form the mount 27 visible in Figures 29 and 31. A wiping element 21 is then fixed to this mount 27 to form the wiper blade 20 shown in Figure 32. A hose 30 bent to fit the shape of the shaft 1, shown in Figure 33, has one end attached to the inlet connector 33 and a second end 31 for connection to a cleaning liquid supply device (not shown).

[0046] The shaft 1 is provided at its second end 9 with a lug 8 for clipping the pipe 30 at the second end 31 of the pipe, where the second end 31 assumes a straight shape parallel to the shaft 1 to minimize the overall footprint increased by the pipe 30.

[0047] Finally, the invention is not limited to the above-described embodiments, which may in particular be combined with one another.

[0048] In all embodiments, the mount 27 may be made of metal or possibly of hard plastic. The wiping element 21 is preferably made of rubber as known. The collar may be made of plastic or metal. The shaft 1 is preferably made of metal.

[0049] Moreover, the various elements of the wiping system can take other forms without departing from the concept of the invention. For example, other elastic means can be used, including for example at least one spring, in particular a coil spring or a leaf spring. Alternatively, the elastic means can be mounted on the wiper blade at the connecting device 22 of the wiper blade 20, and not on the shaft. The drive shaft 1 and the wiper blade 20 can take different forms. For example, the pin on the shaft 1 can take other forms to provide a stop for the wiper blade 20 in the operating configuration. In this embodiment, the pin forms two stops symmetrically opposed around the axis of the shaft to ensure stability in the operating configuration. Alternatively, the shaft can be provided with more than two stops, for example three or four stops, distributed around the axis of the shaft. Advantageously, the shaft is symmetric about the axis of the shaft, which axis also represents the axis of rotation of the shaft. The anti-rotation device can take any form other than the one shown, and comprises complementary anti-rotation means arranged on the drive shaft 1 and on the wiper blade 20. The anti-rotation device may be independent of the wiper blade locking means or may be combined with the wiper blade locking means. In a first embodiment, it uses grooves evenly distributed around the shaft. Alternatively, any notch machined into the shaft may be used.

[0050] The connection of the drive shaft 1 and the wiper blade 20 may be different, provided that this connection allows a releasable assembly of the drive shaft 1 and the wiper blade, including the anti-rotation and locking devices, with a simple relative rotation, involving elastic means. Thus, in the above-described embodiment, the wiper blade is provided with a female connection device and the shaft 1 with a complementary male connection device. These female / male parts can also be reversed. In any case, the wiper blade 20, or more simply an individual part such as the mount 27 or an individual part 32 of the mount 27, is provided with a connection device 22 suitable for a releasable connection of the wiper blade 20 to the drive shaft 1, with a first orientation allowing attachment / detachment to / from the drive shaft 1 and a second orientation making this attachment / detachment impossible.

[0051] The present invention is particularly suited to wiping small active surfaces, particularly cameras or lighting devices for motor vehicles, however, the present invention remains suitable for other applications requiring cleaning of a surface.

Claims

1. A wiper blade (20) for a wiping system, said wiper blade having a connection device (22) suitable for releasably connecting said wiper blade (20) to a drive shaft (1), said connection device (22) having a first orientation that allows attachment / detachment to / from the drive shaft (1) and a second orientation that prevents said attachment / detachment; the connecting device (22) further comprises an opening at one end of the wiper blade (20) with at least two enlarged portions (23) for attaching and detaching the wiper blade; A wiper blade (20) for a wiping system, said wiper blade being provided with anti-rotation means by at least one protrusion (24) at said opening of said connecting device (22).

2. 2. A wiper blade (20) for a wiping system according to claim 1, characterized in that the wiper blade comprises a mount (27) forming a guide for releasably translating mounting of a wiping element (21) intended to come into contact with the surface to be wiped.

3. A wiping system, characterized in that the wiping system comprises a drive shaft (1) and a wiper blade (20) according to claim 1 or 2, said blade being releasably mounted on the drive shaft (1).

4. 4. The wiping system according to claim 3, characterized in that the wiping system has an operating configuration and, in order to lock the wiper blade (20) in the operating configuration, elastic means (15) exert a force on the wiper blade (20) tending to hold the wiper blade (20) against at least one stop of the drive shaft (1).

5. 5. The wiping system according to claim 4, characterized in that the wiper blade (20) and the drive shaft (1) are provided with respective connecting devices (22, 2) configured to enable assembly and / or disassembly of the wiper blade and the drive shaft by successive actuation of the wiper blade and the drive shaft by a first relative translational movement parallel to the axis of the drive shaft (1) and then a second rotational movement about a rotational axis corresponding to the axis of the drive shaft (1).

6. 6. The wiping system according to claim 4 or 5, characterized in that the wiper blade (20) and the drive shaft (1) are provided with respective anti-rotation means configured to form an anti-rotation device for the wiper blade (20) relative to the drive shaft (1) in the operating configuration.

7. 7. The wiping system according to claim 6, characterized in that the drive shaft (1) comprises a first portion having a groove (4) forming an anti-rotation means, and the wiper blade comprises an opening having a protrusion (24) of a size corresponding to the groove, configured to fit into the groove (4) in the operating configuration of the wiping system and form an anti-rotation device.

8. A wiping system comprising a drive shaft (1) and a wiper blade (20), the blade being releasably mounted on the drive shaft (1); said wiper blade comprising a connection device (22) suitable for releasable connection of said wiper blade (20) to a drive shaft (1), said connection device (22) having a first orientation allowing attachment / detachment to / from the drive shaft (1) and a second orientation not allowing said attachment / detachment, said wiping system having an operative configuration, and for locking said wiper blade (20) in said operative configuration, elastic means (15) exert a force on said wiper blade (20) tending to hold said wiper blade (20) against at least one stop of said drive shaft (1), said wiper blade (20) and said drive shaft (1) comprising respective anti-rotation means configured to form an anti-rotation device for said wiper blade (20) relative to said drive shaft (1) in said operative configuration; 1. A wiping system, characterized in that the drive shaft (1) comprises a pin (13) forming an anti-rotation means and a locking stop, and the wiper blade (20) comprises an anti-rotation collar (16) with a recess (17) configured to cooperate with the pin (13) in the operative configuration of the wiping system, thereby forming an anti-rotation means and a means for locking the wiper blade (20) to the drive shaft (1).

9. A wiping system comprising a drive shaft (1) and a wiper blade (20), the blade being releasably mounted on the drive shaft (1); said wiper blade comprising a connection device (22) suitable for releasable connection of said wiper blade (20) to a drive shaft (1), said connection device (22) having a first orientation allowing attachment / detachment to / from the drive shaft (1) and a second orientation not allowing said attachment / detachment, said wiping system having an operative configuration, and for locking said wiper blade (20) in said operative configuration, elastic means (15) exert a force on said wiper blade (20) tending to hold said wiper blade (20) against at least one stop of said drive shaft (1), A wiping system, characterized in that said elastic means comprises an elastic washer (15) arranged between two flat washers (14).

10. A camera or lighting device for a motor vehicle, characterized in that said camera or lighting device comprises at least one wiping system according to any one of claims 3 to 9.

11. A motor vehicle, characterized in that said motor vehicle is equipped with at least one wiping system according to any one of claims 3 to 9 or a camera or a lighting device according to claim 10.

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