FR3024967A1 - ICE WIPER DEVICE COMPRISING A CLAMPING DEVICE - Google Patents

Abstract

Vehicle windscreen wiper device comprising a windscreen wiper arm (1) with a wiper blade having an elongate upper portion (10) at least partially flexible, an elongated lower portion (12) at least partially flexible, and a plurality of connecting elements (18) connecting the parts (10), (12); It comprises a fastening part (70, 76) on the wiper blade side provided with a clamping device (74, 75) for forming with a flexible elastic element, on a part of the drive shaft ( 130), a connection by force and / or form.

Description

FIELD OF THE INVENTION The present invention relates to a vehicle windscreen wiper device comprising a wiper arm with a windscreen wiper blade having: an elongated upper part that is at least partially flexible; an elongated at least partially flexible bottom part, and - a plurality of connecting elements connecting the upper part to the lower part, distributed, spaced apart in the direction of longitudinal extension of the wiper blade and allowing a relative movement of the upper part and the lower part with a movement component in the direction of longitudinal extension of the wiper blade. State of the art Typically, the wiper devices have a wiper arm or wiper lever for driving the wiper blade on the window to be cleaned. The wiper blade then moves between a first movement reversing position and a second reversing position. For this, the arm carrying the wiper blade is connected by a drive shaft to a wiper motor. In particular, in the case of windshields with large variations in curvature, the wiper blade may easily lose contact with the window and leave areas of the window curved, not wiped or with development of the sail . As the wiping must be optimized taking into account a large number of parameters such as for example the amount of rain arriving on the glass, the possible snow load on the glass, the speed of circulation of the vehicle and thus the thrust the wind exerted on the windshield wiper arm makes it possible to avoid in a simple manner the formation of a sail on the window by the only adaptation of the thrust or pressure of the wiper arm on the windshield. This is why it is necessary to improve the wiper devices. In order to improve a wiper device, a large number of marginal conditions must also be taken into account, in particular its operation in multiple conditions as well as its reliability in such a variety of conditions.

An object of the present invention is to develop a windshield wiper device for reliable wiping, virtually without leaving sails or streaks on the vehicle window and / or being easier. In this regard, the subject of the present invention is a wiper device of the type defined above, characterized in that a single piece of equipment fastening device, wiper blade side provided with a clamping device for forming with a flexible elastic element, at least a portion of the drive shaft, a connection by force and / or shape. In other words, the invention relates to a vehicle wiper device comprising a drive shaft. The windscreen wiper device is comprised of a wiper blade having an at least partially elongated elongated upper portion, an at least partially flexible elongate bottom portion, and a plurality of connecting members connecting the upper portion to the lower part. The connecting elements are equidistantly distributed in the direction of longitudinal extension of the wiper blade and these connecting elements allow the relative movement of the upper part and the lower part, relative to one another. to the other with a movement component in the direction of longitudinal extension of the wiper blade. The windscreen wiper device comprises a fastening part, on the wiper blade side with a clamping device, provided with a flexible elastic element making it possible to bond by force and / or by the form with part of the drive shaft. According to another development, the subject of the invention is a method of mounting a wiper device. The method is to use a windshield wiper device as described above and to clamp the fastener on the wiper blade side to a portion of the drive shaft by deforming the wiper blade. elastic member, flexible then after return of shape, make a connection by force and / or by the form between the fastening piece, wiper blade side and the drive shaft.

According to another development, the subject of the invention is a vehicle windscreen wiper device comprising a drive shaft. The wiper device comprises a wiper blade and a fastener, wiper blade side. The fastener part, wiper blade side has a clamping device provided with a radial attachment to be axially locked by a locking member, movable in translation. According to developments of the invention, the vehicle wiper device is used in a particularly advantageous manner and in a large number of fields of application, a simpler mounting and taking into account the marginal conditions. Embodiments of the invention provide reliable wiping, virtually free of streaks and sails of the vehicle window. According to a development, the subject of the invention is a vehicle wiper device, in particular a motor vehicle comprising a drive shaft. The wiper device comprises a wiper blade formed of an elongated at least partially flexible upper portion and an at least partially flexible elongate bottom portion; these two parts are connected by connecting elements, distributed in the direction of longitudinal extension of the wiper blade and the connecting elements allow the movement of the upper part and the lower part, one relative to the other, with a movement component in the direction of longitudinal extension of the wiper blade, a wiper blade side attachment part comprising a clamping device which forms a connection by force and / or by the shape with a flexible elastic element and at least a part of the drive shaft. Thus, the wiper device can be mounted on the vehicle without the need for tools. The wiper device can also be slid on the drive shaft 30 without seizing. According to another development, the flexible elastic element comprises a spring element or a flexible elastic wall for a connection by force and / or by the shape. According to another preferred embodiment, the clamping device is designed so that the wiper blade achieves a clamping lever effect, thereby increasing the clamping force without the need for an additional tool. . According to another preferred embodiment, the fastening element, the wiper blade side comprises a centering unit, which facilitates the centering with respect to the drive shaft. According to another preferred development, the fastener part, wiper blade side is in part or is made with the component at the head end of the wiper blade, which allows to mount the device of wiper without requiring separate mounting elements, possibly without using the hands. In particular, according to another preferred development, the attachment part, wiper side, is performed by an injection process, including a one-step injection process, which reduces the manufacturing cost accordingly. .

According to another preferred development, the fastening device, the wiper blade side comprises a segment of cylindrical shape which, by elastic deformation of the flexible elastic element, will be widened to an inner diameter larger than the corresponding outer diameter the portion of the drive shaft, which ensures the attachment of the wiper device. According to another preferred development, the clamping device comprises one or more jaws, connected to the flexible elastic element and the wiper blade, thus integrating the flexible elastic element, in a very economical manner.

According to another preferred embodiment, the connecting elements are connected to the upper link positions at the upper part and the corresponding lower link positions, to the lower part, the movement of the lower part and the upper part, one relative to each other, not changing the distance between the high link positions and the corresponding low link positions, which remain substantially constant. In particular, this constancy is at the price of a difference of +/- 1 mm. This makes it possible to transmit the forces between the upper part and the lower part, and corresponds to a wiper device of Fin-Ray type.

The invention also relates to a method for mounting a windscreen wiper device with a wiper device, according to one or other of the embodiments described above, consisting in insert the fastening piece, wiper blade side 5 on the drive shaft and use the gap between the fastening piece and the drive shaft to tighten the fastener on the drive shaft, the flexible elastic member then being deformed to reshape and making a connection by the bonding force by the form between the fastener, wiper blade side and the shaft drive. According to another development, the subject of the invention is a vehicle wiper device comprising a drive shaft. The wiper device comprises a wiper blade and a fastener, wiper blade side. The fixing part, on the wiper blade side, is provided with a clamping device with a radial attachment to ensure the axial locking by the locking element, movable in translation. This allows a tool-less mounting with radial and axial attachment. In another development, the radial attachment comprises at least one lateral opening allowing the locking element to be guided in a groove of the shaft. training. This produces a mounting movement with a translation in the direction of longitudinal extension of the wiper blade. According to another development, the radial attachment comprises knurling which improves the transmission of the torque. Drawings The present invention will be described, below, in more detail with the help of the accompanying figures which show more explicitly, the details of embodiment.

Thus: - Figure 1 is a schematic representation partially cut away of a part of a windscreen wiper blade in longitudinal section with a clamping device, according to an embodiment of the invention, 3024967 6 - the figure 2 is a schematic sectional view of the drive shaft for mounting the wiper device, according to the embodiments of the invention; FIG. 3 is a diagrammatic representation of a portion of a Wiper blade without longitudinal sectional view with a clamping device, according to the invention; FIG. 4 shows a window of a motor vehicle equipped with a wiper device and its drive, FIG. 5 is a diagrammatic representation of a windscreen wiper blade portion 10 shown in longitudinal section with a clamping device, according to the embodiments of the invention; FIGS. 6A-6C are schematic representations and / or modes of operation of the FIG. 7A is a schematic representation of another exemplary embodiment of a windscreen wiper device according to the invention in the form of a windscreen wiper arm. incorporating a wiper blade, the assembly being shown in the base position; - Figure 7B is a schematic representation of the wiper arm with the integrated wiper blade of Figure 7A in its position; FIG. 8 is a diagrammatic representation of an embodiment of a wiper blade according to the invention in its basic position; FIG. 9 is a diagrammatic representation; of the wiper blade according to the invention (FIG. 8) in its position against the window, and FIG. 10 is a very simplified flow diagram of the method of mounting a windscreen wiper device according to the invention. the invention. DESCRIPTION OF EMBODIMENTS OF THE INVENTION FIG. 1 is a schematic representation of a detail of a wiper blade of a vehicle wiper device, particularly a motor vehicle. The wiper blade is composed of an elongated upper portion 10 and an elongated lower portion 12; these two parts are at least partially flexible. Several connecting elements 18 connect the upper part 10 and the lower part 12. The connecting elements 18 are distributed in the direction of longitudinal extension 8 of the wiper blade 2 while being separated from each other. other. Figure 1 shows as a detail of the wiper blade, only a connecting element 18. The connecting elements 18 allow the relative movement of the upper part 10 and the lower part 12, one relative to the other, with a motion component oriented in the direction of longitudinal extension of the wiper blade. The cooperation of the upper part, the lower part and the connecting elements 18 can be realized in addition to or following variants by rotation joints at the respective end of each connecting element, connected to the lower part. and / or at the top. The connecting members of the upper part 10 are connected to respective upper link positions and to the lower part 12 to respective lower link positions.

The link positions each have a rotational hinge. When the upper part 10 and the lower part 12 move relative to each other, the distance between the upper link position and the lower link position of the same connecting element 18 does not change substantially; that distance remains constant with a gap which is, for example, +/- 1 mm and in particular +/- 0.3 mm. The wiper blade also has a head end 70. The head end has a fastener, wiper blade side. In the direction of longitudinal extension of the wiper blade 2, the distance between the upper part 10 and the lower part 12 decreases from the leading end, at least in the areas of the longitudinal extension of the wiper blade 2. wiper blade or a main part of the wiper blade extension. Starting from the leading end, the height of the wiper blade moves in certain areas, according to a wedge shape or decreases in these areas, following the direction of longitudinal extension. For example, according to the embodiments that can be used in a large number of connecting elements, the length of the connecting elements is such that at the leading end, the connecting elements are longer than the side of the connecting elements. 8 opposite of the wiper blade in the direction of longitudinal extension. Thanks to the properties of the wiper blade, it can work according to the Fin-Ray principle. These wiper devices typically have no articulation between the wiper blade or the wiper lip and the window, for example, the window of a vehicle. By way of example, the wiper blade 2 is fixed to the drive shaft by means of the clamping devices described above.

Since there is no articulation for lifting the wiper blade or the wiping lip with respect to the window, for example, that of a motor vehicle, when engaging the wiper blade. windscreen wiper on the drive shaft, the attachment piece on the wiper blade side can seize the drive shaft. The described embodiments make it possible to avoid this disadvantage. Figure 1 shows the fastener, side wiper blade. This fastener has a clamping device, provided with a flexible elastic element. In FIG. 1, the flexible elastic element is constituted for example by the non-deformable elastic edge 76 of the head end. This allows a cavity of the head end of the wiper blade to be sufficiently open to surround the enlarged end end 132 of the drive shaft 130. The wiper device can, thus, tighten or clip on the drive shaft. To install or release the wiper blade 2, the head end 70 of the wiper blade is disengaged from the enlarged head end 132 of the drive shaft. At this time, the edge 76 or the wall of the head piece is deformed. The edge or the wall constitutes a flexible elastic element for the fastening part, side wiper blade. For example, a first projecting portion 76 can be hung under the enlarged head end 132 and the wiper blade pushed onto the drive shaft using the wiper blade as a lever. On assembly, the resilient flexible member reversibly deforms, thereby guiding the projecting portion 75 around the enlarged head end 132 and hooking thereto. For ease of mounting, the projection 75 has a lower side 75 'at an angle.

Thus, by actuating the clamping device 140, a connection is made by force and / or by the form between the fastening piece, the wiper blade side 30 and the drive shaft 130. Embodiments, the enlarged head end 132 includes a knurled surface 133 or teeth to enable a large torque to be transmitted. Figure 2 shows the drive shaft with the enlarged head end 132. This head end has a knurling 133 or teeth. Alternatively or additionally, the knurling may also be provided on the side surfaces of the enlarged head end of the drive shaft or on the attachment part, wiper blade side. The drive shaft has a first centering element 134, for example, a pin which enters a second centering element 72. The second centering element 72 is a corresponding cavity, for example a conical cavity. Alternatively, the drive shaft or the enlarged head end of the drive shaft has a cavity constituting the centering element and the leading end of the wiper device has a pin. It is also possible to have several first and second central elements. It is interesting to use a conical realization to ensure self-centering. Figure 3 shows another development in which the head end 70 of the wiper blade 2 comprises a flexible elastic member 376 in the form of spring elements. These spring elements are, for example, plastic springs, which makes it possible to produce the windscreen wiper blade 2 in one piece. Figure 3 shows the wiper blade during the assembly operation, the wiper blade is not yet installed. By moving the wiper blade to the right as shown in FIG. 3, the plastic springs, i.e. the resilient elastic members 376, first deviate, which allows these elastic elements to apply around the drive shaft. By their elastic deformation, at the end of assembly, the elements surround the drive shaft. Figure 3 shows the drive shaft 130 with knurls 133. Alternatively, the knurls may also be on the attachment piece, wiper blade side, i.e., flexible elastic elements. The knurls make it possible to transmit a greater torque between the drive shaft and the wiper blade 2.

According to embodiments, the fastener part, wiper blade side, i.e. fastening components and deformations are made in one piece with the head end of the component attached to the wiper blade. The windscreen wiper device can thus be mounted without tools, that is to say that the windscreen wiper device 10 constitutes a single assembly with its own tool in the form of the clamping device. The attachment part, wiper blade side can be manufactured by injection, including a one-step injection process. FIG. 4 is a diagram of the realization of wiper drive, in particular a direct drive. According to the embodiments described, this concept can be applied to the windscreen wiper or the rear window wiper. The motor 11 drives the wiper lever 32 in rotation in the bearing 28. FIG. 4 shows the wiper lever 32 in any position 20 with respect to the window 30. The dashed lines schematize the position of the wiper lever 32. high movement reversal 102 and the low position of reverse movement 104 and the storage position 106, exceeding. The reversible rotation of the motor 10 causes, in normal operating mode, the wiper lever 32 between the high inverting position 102 and the low inverting position 104, reciprocating. When the wiper is no longer needed during vehicle operation, i.e. when the user cuts the wiper drive, the wiper lever 132 exceeds its wiper position. low reversal 104 and arrives at its storage position 106. As shown in FIG. 4, the motor is controlled by a control device 35 and recognizes its position, for example, its rotation about the axis 128 by a sensor, for example, a magnetic sensor. According to the embodiments described, this windscreen wiper device is used as windscreen wiper or rear window wiper, as shown by way of example in FIGS. 5 or 6A-6C. At the head end 70 or a corresponding connection in connection with the use of a windshield wiper, there is one or more clamping members, for example flexible elastic members 376. The flexible elastic member 376 may be in the form of spring elements. These elements may be, for example, made in the form of plastic springs. This allows the windscreen wiper blade 2 to be manufactured in one piece. The locking elements 474 axially lock onto the drive shaft. For this, as shown in Figure 5, engages the drive shaft 130 in a radial attachment 470. The drive shaft and / or the radial attachment 470 may comprise here knurled portions.

The dashed lines shown in FIG. 6A show the lateral openings or the opening slots in the radial attachment 470. By sliding the radial attachment 470 and its drive shaft 130, the locking elements 474 are allowed to penetrate. in the groove of the drive shaft. The groove is released through the lateral openings in the radial attachment 470. This sliding direction may be substantially oriented in the radial direction with respect to the drive shaft or the radial attachment. Figure 6A shows the wiper blade during the mounting operation, the wiper blade not yet installed. By sliding the windscreen wiper (FIG. 6A) to the right, the plastic springs, that is, the resilient elastic members 376, first escape for the elements lock 474 can move in the groove of the drive shaft. This results in an axial locking.

Figure 6B shows the drive shaft 130 with the knurled portions 133 on the drive shaft. Alternatively or additionally, the knurled portions may also be on the fastener, wiper blade side, i.e., for example, in the radial attachment 470. The knurled portions allow the drive shaft to transmit greater torque to the wiper blade 2.

According to embodiments, the fastener part, wiper blade side, i.e. the fastening components and the shapes are in one piece, for example, at the head end. the component attached to the wiper blade. This makes it possible to mount the windscreen wiper device without using a tool or to make the wiper device in the form of a single module comprising its own tooling in the form of a clamping device. For example, the attachment part, wiper blade side, may be plastic. In particular, the attachment part, wiper blade side will be adapted to be performed by an injection method, including a one-step injection process. In the remainder of the description, the aspects of an exemplary windscreen wiper device applying the embodiments described above of the wiper device, in particular the assembly or disassembly described with a piece of wiper, will be examined. attachment, wiper blade side and a clamping device constituting advantageous solutions. The wiper arm or the wiper blade can thus be mounted simply, avoiding any risk of jamming during assembly. Seizure results from the fact that a wiper blade operating on the Fin-Ray principle, in contact with the glass, already establishes a contact pressure for the wiping operation thus exerting a force which the mounting by the translational movement is oriented substantially in the direction of the axis of the drive shaft, which can produce seizure. The fastener shown here or the fasteners may also be generally applicable to windscreen wiper devices, particularly in connection with a direct windshield wiper drive. For the realization using Fin-Ray wipers, the following figures show other characteristics, developments and aspects.

FIGS. 7A and 7B are diagrammatic representations of a wiper blade 2 in its basic position and in its position against the window, in accordance with the embodiments of the wiper device of FIG. 'invention. The description here relates to Fin-Ray wiper blades for which a compensating layer 13 according to the embodiments described above may be particularly useful. Figures 7A, 7B, 8 and 9 do not show again the compensation layer 13 which, nevertheless, can be applied as indicated above. The wiper blade 12 serves to wipe a window 4 of a vehicle, for example a motor vehicle, including a passenger vehicle. The wiper blade 2 has a longitudinal extension 8 and has an elongate upper portion 10 and an equally elongated lower portion 12. The longitudinal extension of the upper portion 10 and the lower portion 12 substantially corresponds to the direction of longitudinal extension 8 of the wiper blade 2.

Both the upper portion 10 and the lower portion 12 are flexible beams or can be made in the form of a flexible beam. It is also possible to make as flexible only a fraction of the upper part 10 and / or the lower part 12.

According to some embodiments which can be combined with other embodiments, for the upper portion 10 and / or the lower portion 12, a material having a modulus of elasticity in the range of 0.005 kN / mm 2 to 0 is used. , 5 kN / mm 2 and in particular 0.01 kN / mm 2 and 0.1 Kn / mm 2. This provides the flexibility required for the upper portion 10 and the lower portion 12, in combination with the appropriate sectional area of the upper portion 10 and the lower portion 12 to thereby have optimum flexural rigidity. The upper portion 10 and the lower portion 12 are attached to a fastener 30. The wiper device may be connected by the fastener 30 such as for example a quick fastener to the vehicle. On the side facing the fastener 30 in the longitudinal extension direction of the wiper device, the upper part 10 and the lower part 12 are connected to a connecting position 34. The connecting elements are designed so that the distance from the connecting position to the upper part and to the lower part varies at most by +/- 1 mm and in particular by not more than +/- 0,3 mm (this is linked, for example thermal expansion and / or tensile and compressive forces). The connecting elements may be essentially inelastic, that is, the effect of the connecting elements is based on the transmission of forces between the upper and the lower part and not on the some elasticity. The upper part 10 and the lower part 12 are connected to each other the connecting elements 18. These connecting elements 18 are connected to the long inner sides of the upper part 10 and the part lower 12 by rotation joints 20. Typically, the rotational joints 20 are hinges and in particular hinge films. This is especially advantageous if the upper part 10, the lower part 12 and / or the connecting elements 18 are made of a plastic material or are coated with a suitable plastic material. According to certain characteristic embodiments that may be combined with other typical embodiments, the rotation joint is selected from the group consisting of: hinge, film-hinge, narrowing of the thickness of the material to generate a low rigidity along the torsion axis and articulation with a torsion axis, means for connecting the upper part to the connecting element or for connecting the lower part to the connecting element and the sliding of the lower part attached to the upper part, in the direction of longitudinal extension, etc. Embodiments using the joints as hinge films thus constitute a simple solution for the joints of the Fin-Ray wiper. The wiper blade 2 can be made in one piece and in particular in a manner that can be used directly at the machine outlet. According to the typical embodiments, the hinge films have a very large extensibility. This results for example from the choice of material in the following group: PP, PE, POM and PA. Alternatively, the hinge films may also be one or more of the following group: TPE (thermoplastic elastomer) TPE-S, TPE-O, TPE-U, TPE-A, TPE-V and TPE-E. The connecting elements 18 are spaced apart from one another in the direction of longitudinal extension of the wiper blade 2. The gaps are advantageously less than 50 mm and in particular less than 30 mm, which results in a device The wiper blade 30 is particularly flexible, particularly in its lower part, which makes it easy to adapt to the curvature and curvature variations of the window to be wiped. FIG. 7B is a diagrammatic representation of the wiper blade 2 of FIG. 7A in position against the window 4. As the window pane 4 has a curvature, when the wiper blade 2 is applied against the pane there are pushing forces in contact with the lower part 12. As the upper part 10 and the lower part 12 are flexible beams and the connecting elements 18 are rotatably connected to the upper part 10 and the part lower 12, these two upper 10 and lower 12 parts can slide relative to each other. Thanks to the thrusts acting on the lower part 12, the wiper blade 2 flexes in the direction from which the thrust comes and thus applies precisely against the curvature of the window pane 4. Thanks to the structure of the modes described, under the effect of a force exerted on the lower part (by the window 4) there will be a bending of the lower part in the direction from which the force comes. This is due to the connection between the upper part 10 and the lower part at the connecting position 34, the shape and articulation of rotation of the connecting elements and the upper and lower parts. The wiper device according to the embodiments described above uses the effect of the caudal fins of certain fish which, under lateral thrust, do not escape in the direction of the thrust, but take a curved shape in the opposite direction, that is to say in the direction from which the thrust comes. This principle is also called the principle of radiated fins or Fin-Ray principle. Thus, the wiper device according to the embodiments described above has the advantage of better adapting to the window 30 of the vehicle whereas a conventional windscreen wiper blade whose upper part is usually rigid, that is, non-flexible, does not have this advantage. FIGS. 8 and 9 are diagrammatic representations of a windscreen wiper blade 2 of a vehicle windscreen wiper device, in particular of a motor vehicle represented in the base position 3024967 16 (FIG. 8) that is to say in the unsolicited state and in a position applied against the pane 4 (FIG. 9) according to the embodiments described here. The wiper blade 2 has an elongate upper portion 10 and an elongate lower portion 12 that are at least partially flexible.

Several connecting elements 18 connect the upper part 10 and the lower part 12; the connecting elements 18 are spaced from each other in the direction of longitudinal extension 8 of the windscreen wiper blade 2. The connecting elements 18 are designed to allow relative movement of the upper portion 10 and the lower portion 12 relative to each other with a component of movements in the direction of longitudinal extension 8 of the wiper blade 2. The connecting elements 18 are arranged with respect to the lower part 12 so that in the unsolicited state of the wiper blade 2 there is an angle between the longitudinal axis 24 of each connecting element 18 15 and the lower part 12, at least partially following the longitudinally extending direction 8 of the wiper blade 2 which varies in particular, continuously or monotonically or strictly monotonically. In the case of the wiper blade in the unsolicited state shown in FIG. 8, the angles α of the axes of the connecting elements 18 with respect to the lower part 12 which vary along the longitudinal extension 8 of the wiper blade 2 have the references a'1, CC2, a'3, .... a '._ 1, a'n a. year. In the unsolicited state of the wiper blade, that is to say when it is pressed against the window as shown for example in FIG. 10, the angles a of the axes 24 of the connecting elements 18 vary from angles in the unsolicited state. To explain this, the angles α of the longitudinal axes of the connecting elements 18 with respect to the lower part 12 which varies in the direction of longitudinal extension 8 of the wiper blade 2 as is shown for the broom 2 in the position applied against the window bears the references a'1, a'2, a'3, .... a '.- 1, a' .. According to the embodiments of the invention, FIG. Wiper device which can be combined with other embodiments, the wiper blade 2 has at least a first zone in which the angle α of the longitudinal axes 24 of the connecting elements 18 by 3024967 17 ratio to the lower portion 12 in the direction of longitudinal extension 8 of the wiper blade 2 decreases towards one end of the windscreen wiper following a decrease particularly monotonous and in particular strictly monotonous. In addition, the wiper blade 2 may have at least a second zone in which the angle α of the longitudinal axes 24 of the connecting members 18 with respect to the lower portion 12 increases in the extension direction longitudinally 8 of the wiper blade 2 to one end of the wiper blade by an increase, particularly monotonous and in particular strictly monone. According to embodiments such as those shown in FIGS. 8 and 9, the second zone of the wiper blade in which the angle α of the longitudinal axes 24 of the connecting elements 18 with respect to the lower part 12 increases. in the direction of longitudinal extension 8 of the wiper blade 2 towards one end of the wiper blade is in an inner position of the wiper blade close to the attachment device 30 of the wiper blade. wiper. Thus, there will be a wiper device that has a particularly good adaptation to the curvature of the window. In addition, there will be a very regular application pressure of the wiper device against the window and also a homogeneous distribution of the forces of the wiper device, which ultimately results in a quality of very high wiping. According to the embodiments of the wiper blade which can be combined with other embodiments, the connecting elements 18, especially when the wiper blade 2 is in the unsolicited state, are attached to the lower part 12 so that the longitudinal axes 24 of the connecting elements 18 make angles an with respect to the lower part 12 and which are between a lower limit value a.0 and an upper limit value a ... According to the embodiments, the lower angular limit anu is equal to 10 °, in particular anu is equal to 15 ° and in particular a. = 20 °; the upper limit value of the angle is an. = 80 °, in particular an. = 90 ° and in particular an. = 100 °. This has the advantage of a particularly good transmission of the force exerted on the lower part towards the upper part.

According to the embodiments of the wiper device which can be combined with other embodiments, the connecting elements 18 are configured so that the distance between the upper part 10 and the lower part 12 varies at least partially in the direction of longitudinal extension 8 of the windscreen wiper blade 2 and in particular that it decreases continuously in a first zone and increases continuously in a second zoned. The distance between the upper part 10 and the lower part 12 in the direction of longitudinal extension 8 of the ice-soap wiper 2 may comprise an area in which the distance between the upper part 10 and the lower part 12 is substantially constant in the direction of longitudinal extension 8 of the wiper blade 2. The distance between the upper portion 10 and the lower portion 12 at the attachment member is greater than that at the opposite end. According to the embodiments of the windscreen wiper blade which can be combined with other embodiments, the internal distance (turned towards the fastener) is at least 15 mm, in particular at least 25 mm and in particular of at least 35 mm. According to embodiments which can be combined with other embodiments, the outer distance is at least 10 mm, especially 12.5 mm and in particular at least 15 mm. According to the embodiments which can be combined with other embodiments, the average distance is at least 7.5 mm and in particular at least 9 mm and especially at least 12.5 mm. As shown by way of example in FIGS. 8 to 9, the connecting elements 18 according to the embodiments that can be combined with other embodiments, are hingedly connected to the lower part 12 and / or the upper part 10. In particular, the connecting elements 18 are connected to the lower part 12 and / or the upper part 10 by a first hinge film 20. The first hinge film 20 can be in one piece with the connecting element 18 and the upper part 10 and / or the lower part 12. The one-piece production of the hinge film allows a simple and economical manufacturing.

According to the embodiments of the wiper blade which can be combined with other embodiments described herein, the wiper blade has a first zone with a first curvature co <0 and a second zone. with a second curvature co> 0. In addition, the wiper blade according to the embodiments may have a third zone with a third curvature co <0; the second zone of the wiper blade with its second curvature co> 0 will be located between first zone having the first curvature co <0 and the third zone having the third curvature co <0 as shown by way of example FIG. 9. There is thus a wiper device which provides a very even application pressure against the window 4. In addition, the windscreen wiper device will have a better adaptation to the window 4 and will give a better quality. wiping thrust. In accordance with other embodiments which may be further combined with a quick fastening link for a windshield wiper Fin-Ray, in which the entire windshield wiper device is removed from the windshield wiper shaft. drive or attachment member of the drive shaft to the vehicle, there is a mechanism for lifting the wiper blade 2 of the wiper device relative to the window 4 or 20 apply on it. This simplifies the use, for example to manually clean the window 2. FIG. 10 shows a method of mounting a wiper device according to the embodiments described herein. According to step (802), a windscreen wiper is used with a fastener, on the side of the windscreen wiper blade. The fastening piece is clamped on the wiper blade side on at least a portion of the drive shaft or it is clipped onto it, the flexible elastic element deforming elastically for after returning, making a connection by force and / or shape between the fastener, wiper blade side and the drive shaft. It is in particular a wiper device operating according to the Rin-Ray principle.

3024967 20 NOMEMCLATURE OF MAIN ELEMENTS 2 Wiper blade 8 Longitudinal direction 5 10 Elongated upper part 12 Elongated lower part 18 Connecting element 20 Hinge film 24 Longitudinal axis of connecting element 10 28 Bearing 28 Axis 30 Part of fastening 32 Wiper lever 35 Control unit 15 70 Head end 72 Second centering element 74 Projecting surface 75 Projecting surface 75 'Bottom side inclined 20 76 Edge or wall of the head part 102 Inverting position high motion 104 Low motion reverse position 106 Storage position 130 Drive shaft 25 132 Extended head end 133 Knurl 134 First centering element 376 Flexible elastic element 470 Radial attachment 30 474 Locking element 702-704 Step of the flow chart of the process a .... a. Angle between the longitudinal axis of the connecting elements and the lower part of the curvature 35

Claims (5)

1) Vehicle wiper device comprising a wiper arm (1) with a wiper blade (2) having: - an elongated upper part (10) at least partially flexible, - a elongated lower part (12) at least partially flexible, and - a plurality of connecting elements (18) connecting the upper part (10) to the lower part (12), spread apart in the direction of longitudinal extension (8) of the broom of wiper (2) and allowing relative movement of the upper part (10) and the lower part (12) with a movement component in the direction of longitudinal extension (8) of the wiper blade -Wiper (2), wiper device characterized in that it comprises: - a fastener (70), wiper blade side provided with a clamping device (74-75) for forming a connection by force and / or shape with a flexible elastic element (76), and at least a portion (132) of the training (130). 2) Wiper device (100) according to claim 1, characterized in that the flexible elastic element comprises a spring element (374, 474) or a flexible elastic wall (76). 3) Wiper device (100) according to claim 1, characterized in that by the clamping device is formed for the wiper blade exerts a lever effect for the clamping device. 4) Wiper device (100) according to claim 1, characterized in that the fastening element (70), wiper blade side, comprises a centering unit (72). 5) Windscreen wiper device (100) according to claim 1, characterized in that the fixing piece, wiper blade side is made in one piece or is made on the component attached to the windscreen wiper blade. head end (70) of the wiper blade (2). 5 6 °) wiper device (100) according to claim 1, characterized in that the fastener part wiper blade side is performed by an injection method, including a method of injection to a step. Windscreen wiper device (100) according to Claim 1, characterized in that the fastening device (474), on the wiper blade side, comprises a cylindrical segment which, by an elastic deformation of the wiper blade, flexible elastic member, has an inside diameter larger than the corresponding outside diameter (470) of the portion of the drive shaft (130). 8. Wiper device (100) according to claim 1, characterized in that the clamping device comprises one or more jaws (474), connecting the flexible elastic element to the wiper blade. Wiper device (100) according to claim 1, characterized in that the connecting elements (18) are connected in several upper connection positions (20) to the upper part (10) and in several lower connection positions (20) corresponding to the lower part (12), and when the upper part (10) and the lower part (12) move relative to each other, the distance between the positions of The high link 30 (20) and the corresponding low link positions (20) are substantially constant, especially within +/- 1 mm. 10 °) A method (200) for mounting a windscreen wiper device comprising: - providing (201) a windscreen wiper device (100), in particular a windscreen wiper device according to claims 1 at 10, - tighten the fastening part (70) on the wiper blade side (2) on at least one part (132) of the drive shaft (130) or by deforming an element resilient elastic (374, 474) for after the return, forcibly and / or formally connecting the fastening part, the wiper blade side (2) and the drive shaft (130) . 10) Wiper device (100) of a vehicle comprising a drive shaft, in particular a motor vehicle, - a wiper blade (2), - and a fixing part, broom side windscreen wiper (30, 70) provided with a clamping device with a radial attachment (470) moved in translation to axially lock with a locking element (474). The wiper device according to claim 11, characterized in that the radial attachment comprises at least one lateral opening for guiding the locking element in a groove of the drive shaft (130). . 13 °) Wiper device (according to claim 11, characterized in that the radial attachment comprises a knurling (133).) Wiper device according to claim 11, characterized in that windscreen wiper blade comprises: - an elongate upper part (10) at least partially flexible, - an elongated lower part (12) at least partially flexible, - a plurality of connecting elements (18) connecting the upper part (10) of the lower part (12), the connecting elements being distributed, spaced in the direction of longitudinal extension (8) of the wiper blade (2) and the connecting elements (18) allowing the movement relative to the upper part (10) and the lower part (12) relative to one another with a movement component in the direction of longitudinal extension (8) of the wiper blade (2 ). Windscreen wiper device according to Claim 14, characterized in that the connecting elements (18) are connected in several upper connection positions to the upper part (10) and to a plurality of corresponding lower link positions. , at the lower part (12) and the movement of the upper part (10) and the lower part (12), relative to each other, does not change the distance between the upper link position and the corresponding low link position which remains substantially constant, especially with a difference of +/- 1 mm. 15