FR3014798A1 - WIPER BLADE - Google Patents

Abstract

A wiper blade (100) having a support segment (322) attached to a wiper arm and a wiper and cleaning segment (323) connected to the support segment (322) and comprising a wiping and cleaning member (160). The wiper and cleaning member (160) includes a fiber device (200) with at least one fiber unit (330), including a microfiber device.

Description

Field of the Invention The present invention relates to a wiper blade having a support segment attached to a wiper arm and a wiper and cleaning segment connected to the support segment and which comprises at least one wiping and cleaning element for performing a wiping and / or cleaning operation. State of the art Such a wiper blade is known according to the state of the art; it comprises a wiper and cleaning element for cleaning and / or cleaning a surface, for example a vehicle window. For this, the wiper and cleaning element is applied with a predefined pressure against the window of the vehicle and is driven in a wiping and / or cleaning movement in an inclined position on the window of the vehicle, that is, that is, it performs an alternating movement between two end positions to remove water and dirt from the glass. The disadvantage of this wiper according to the state of the art is that for the wiping operation and / or cleaning, to ensure wiper quality and constant cleaning, it is necessary to drive the element of wiping and cleaning in its wiping and cleaning movement at an angle at least substantially constant with respect to the glass surface and with a predefined application pressure. If the application pressure is too great, it leaves a veil on the glass and if the pressure is too low, the glass is wiped and / or only partially cleaned. In addition, to remove the dust must first wet the glass, which makes the wiping operation and / or cleaning complex. OBJECT OF THE INVENTION The object of the present invention is to develop a windscreen wiper blade with a wiping and cleaning element making it possible to simplify the wiping and / or cleaning operation with a better wiping effect. and / or cleaning. For this purpose, the subject of the invention is a windscreen wiper blade of the type defined above, characterized in that the wiping and cleaning element comprises a fiber device with at least one unit of fibers, in particular a microfiber device having at least one microfiber unit.

The invention makes it possible to develop a wiper blade having a wiping and cleaning element making it possible to improve wiping and / or cleaning by a wiping and / or simplified cleaning operation. Thus, the static behavior of the fiber device, in particular the microfiber device, makes it possible to perform a simpler and more reliable wiping and / or cleaning operation of a surface to be wiped or cleaned, for example a window surface of a vehicle. , without having to humidify it. Preferably, the wiping and cleaning element comprises a wiper lip provided with a fiber device, which allows the fibers to be mounted more stably and more securely on the wiper element. and cleaning the wiper blade. The wiper and cleaning member preferably has a housing for receiving at least one segment, a unit of fibers, which allows the fiber unit to be installed in a simple manner on the wiper and cleaning element. . Preferably, the housing has at least in segment a groove shape, ensuring the safety and robustness of the installation.

According to a development, the first longitudinal side of the wiping and cleaning element comprises a first fiber unit for performing a cleaning operation. The second large side of the wiper and cleaning member has a second fiber unit for performing the wiping operation. Thus, the wiping and cleaning element makes it possible to carry out both a wiping operation and a cleaning operation in a particularly suitable manner. The wiper and cleaning segment is preferably a hollow body with an interior cavity and the fiber device is provided at least in segments on the side of the outer periphery of the hollow body not facing the support segment. Thus, the hollow body can elastically and flexibly compensate for variations in the application pressure of the wiper blade against the surface to be wiped or cleaned, for example a window of a vehicle to prevent the formation of a troublesome sail or streaks due to excessive application pressure or to prevent the surface from being wiped and cleaned only partially because of a too low application pressure. Preferably, the fiber unit arrives at least in zones in the inner cavity, thereby providing a simple fluidic communication for the transport of liquid between the fiber unit and the hollow body. The interior of the hollow body preferably comprises a fiber reservoir communicating with the fiber unit, which enables the wiper and / or cleaning liquid to be conveyed by the fiber unit into the fiber reservoir and / or supplying cleaning liquid from the fiber reservoir through the fiber unit. Preferably, the fiber reservoir discharges the wiper liquid through the fiber unit and / or provides cleaning liquid supply to the fiber unit. The fiber reservoir can thus be used in a simple manner to evacuate a liquid and / or to supply a liquid to the fiber unit used for wiping and / or cleaning without the need for additional elements such as, for example, nozzles. The unit of fibers is preferably made in the form of a microfiber rope which makes it possible to have a linear contact with the surface to be wiped or cleaned, for example a vehicle window, thanks to the relatively large surface pressure improving the effect of wiping and / or cleaning. Preferably, the fiber device is a nonwoven of microfibers (or nonwoven web of microfibres). This corresponds to a fiber device, robust and stable. The invention also relates to a wiper device comprising a wiper blade provided with a support segment for attachment to the wiper arm and a wiper and cleaning segment. connected to the support segment and having at least one wiper and cleaning element for a wiping and / or cleaning operation. The wiper and cleaning member has a fiber device with at least one fiber unit, including a microfiber device with at least one microfiber unit. Drawings The present invention will be described in more detail below. using exemplary embodiments of wiper blades shown in the accompanying drawings, in which: FIG. 1 is a side view of a wiper blade comprising a unit of fibers according to the invention, FIG. 2 is a sectional view of the microfiber fiber unit according to FIG. 1, FIG. 3 is a sectional side view along line III-III of FIG. 1 of a first embodiment. embodiment of the windscreen wiper blade of FIG. 1, FIG. 4 is a sectional view along the section line III-III of FIG. 1 of a second embodiment of the windscreen wiper blade of FIG. FIG. 5 is a sectional view along section line III-III of FIG. Ie embodiment of the wiper blade of Figure 1, Figure 6 is a sectional view along the section line III-III of Figure 1 of a fourth embodiment of the wiper blade FIG. 7 is a sectional view along section line III-III of FIG. 1 of a fifth embodiment of the windscreen wiper blade of FIG. 1, FIG. in section of the windscreen wiper blade of FIG. 7 in the stressed state, FIG. 9 is a sectional view along line III-III of FIG. 1 of a sixth embodiment of the wiper blade. FIG. 10 is a sectional view along section line III-III of FIG. 1 of a seventh embodiment of the windscreen wiper blade of FIG. 1, FIG. is a sectional view along line III-III of Figure 1 of an eighth embodiment of the wiper blade of Figure 1, Figure 12 is a sectional view along the line of neck III-III of FIG. 1 of a ninth embodiment of the windscreen wiper blade of FIG. 1, FIG. 13 is a sectional view along section line III-III of FIG. tenth embodiment of the windscreen wiper blade of FIG. 1, FIG. 14 is a sectional view along the section line III-III of FIG. 1 of an eleventh embodiment of the windscreen wiper blade. FIG. 15 is a top view of a microfiber rope according to FIG. 14 of a first embodiment; FIG. 16 is a top view of a microfiber rope according to FIG. FIG. 17 is a top view of a microfiber rope according to FIG. 14 of a third embodiment. FIG. 18 is a sectional view along section line III-III of FIG. Figure 1 of a twelfth embodiment of the wiper blade of Figure 1. Description of embodiments Figure 1 shows a wiper blade 100 preferentially for a wiper 170 of a motor vehicle; this wiper blade wipes and / or cleans a vehicle window 120 shown schematically as flat pane in Figure 1. The wiper blade 100 comprises a fastening means 130 connected to a wiper arm -glace 110 simply schematized by a line in broken lines. The wiper blade 100 preferably comprises a deflector 140 with at each axial end 101, 102 of the wiper blade 100, the end caps 150, 151 and a wiper blade 160. According to one embodiment, the wiper blade 160 comprises a fiber device 200 (Figure 2). It should be noted, however, that the invention is not limited to wiper blades for windscreen wipers, in particular for a motor vehicle window, but can be applied to all applications concerning wiping and / or surface cleaning with wipers. It should also be noted that the deflector 140 and the end caps 150, 151 are only one option for carrying out the invention and are not essential. FIG. 2 shows a fiber device 200 for wiping and / or cleaning vehicle windows 120 according to FIG. 1 corresponding to an embodiment for explaining the functions in the case of the example of a cleaning operation. and wiping. The fiber device 200 is preferably made in the manner of a microfiber device and comprises by way of example, for example eight microfibers 220, 221, 222, 223, 224, 225, 226, 227. But it is necessary to note that the number of eight microfibers 220, 221, 222, 223, 224, 225, 226, 227 is only a non-limiting example of the invention that applies to any number of microfibers. For the wiping and cleaning operation the fiber device 200 is moved with a predefined application pressure in the wiping direction 202 on the window 120 of the vehicle, for example by moving the wiper blade FIG. 1. Microfibers 220, 221, 222, 223, 224, 225, 226, 227 preferably having a triangular section take the elements of dirt and moisture 214 from the window 120 of the vehicle. This makes it possible to dry and clean and / or smooth the region 211 of the vehicle window 120 using the fiber device 200. FIG. 3 shows the wiper blade 100 of FIG. carrier 322 constructed to attach the wiper arm 110 of FIG. 1 and a wiper and cleaning segment 323 connected to the support segment 322. To simplify the presentation and not to complicate the drawing, the cap of FIG. end 151 of Figure 1 is not shown in Figures 3-14 and Figure 18. According to one embodiment, the support segment 322 comprises a support member 300 for receiving at least one preferably elastic support rail using at least one cavity. By way of example, the support member 300 has two groove-like or recess-shaped cavities 312, 313 each receiving a support rail (or spring rail) 310, 311. The support member 300 provided with spring rails 310, 311 are fixed to the attachment 130 of FIG. 1. Preferably, the spring rails 310, 311 are connected to the deflector 140 so that the deflector 140 blocks at least one segment, spring 310, 311 to the support member 300. Preferably, the lower side 324 of the support member 300 opposite the deflector 140 carries the wiper and cleaning segment 323. The wiper segment and cleaning 323 comprises at least one wiper and cleaning member 160 for performing a wiping and / or cleaning operation. This element comprises the fiber device 200 of FIG. 2 which, according to one embodiment, is provided with at least one unit of fibers 330 and preferably made in the form of a microfiber device with at least one unit of fibers. micro-fibers. The fiber device 200 is preferably installed on the lower side 325 of the wiper and cleaning member 160 away from the support member 300. According to one development, the wiper member and cleaning member 160 includes a wiper lip 320 provided with the fiber device 200 or its fiber unit 330. The wiper lip 320 is made at least in segments to receive a fiber unit 330 preferably in the form of a housing 321 made at least in segment in the form of a groove. The wiping lip 320 or the wiping and cleaning member 160 is preferably made in one piece with the support member 300. Fig. 4 shows a wiper blade 100 of Fig. 1 with the support segment 322 and the wiper and cleaning segment 323 of Fig. 3 and an intermediate segment 420. The intermediate segment is exemplary between the support segment 322 and the wiper segment and The intermediate segment 420 preferably comprises a stabilization segment 410 on the lower side 324 of the support segment 322; this is provided by way of example of two lateral recesses 412, 413 and a tilting spacer 430. The tilting spacer 430 corresponds to a relatively small section and preferably allows the tilting of the wiping lip 320 during a reversal of movement or direction of movement of the wiper blade 100 during a wiping and / or cleaning operation. It should be noted that in Figure 4 the housing 321 made at least in segments in the form of a groove in the wiping lip 320 has a relatively smaller section than in Figure 3. This reduces the corresponding section of the fiber unit 330 and thereby have a resource-efficient fiber unit 330. Fig. 5 shows the wiper blade 100 of Fig. 1 with the support segment 322 and the wiper and cleaning segment 323 of Fig. 3 as well as the intermediate segment 420 of Fig. 4. However, in in this case, contrary to FIG. 4, the first large vertical side 552 (according to FIG. 5) of the wiping and cleaning element 160 comprises a first fiber unit 330 and the second longitudinal side 551 (vertical according to FIG. 5) of the wiper and cleaning member 160 includes a second fiber unit 530. Preferably, the first fiber unit 330 provides the cleaning phase preferably performed when the wiper blade 100 moves. in the direction of the arrow 501. The second fiber unit 530 preferably performs a wiping operation when the wiper blade 100 moves in the opposite direction as indicated by the arrow 502. So preferably, the first fiber unit 330 has a relatively high coefficient of friction and the second fiber unit 530 has a relatively low coefficient of friction. Figure 6 shows the wiper blade 100 of Figure 1 with the support segment 322 and the wiper and cleaning unit 323 of Figure 3. In contrast to Figure 3, the wiping segment and However, the cleaning member 323 here has a hollow body 615 of substantially rectangular cross-section, having an outer periphery 616 around the hollow interior volume 614. Preferably, the outer periphery 616 has a first and second vertical side 552, 551, according to Figure 6 for the wiper and cleaning element 160 of Figure 3 with a shape at least in segments, concave or convex. This allows the hollow body 615 to spring-move in the direction of the cavity 614, i.e. compression of the hollow body 615 in the direction of the support segment 322 so as to compensate for variations in the application pressure of the wiper blade 100.

FIG. 7 shows the wiper blade 100 of FIG. 1 with the support segment 322 and the wiper and cleaning segment 323 of FIG. 3 as well as the hollow body 615 of FIG. 6. in Figure 6, it has a section at least substantially of annular shape. FIG. 8 shows the wiper blade 100 of FIG. 7 urged here by way of example to generate an appropriate application pressure with a force F directed in the direction of the window 120 of the vehicle according to FIG. The hollow body 615 whose section is at least substantially of annular shape is then compressed, that is to say that it compresses elastically between the support member 300 of Figure 3 and the window 120 of the vehicle, radially outward, which generates a deformation, for example elliptical. Figure 9 shows the wiper blade 100 of Figure 1 with the deflector 140 of Figure 1 and the support segment 322 and the wiper and cleaning segment 323 of Figure 3 and the hollow body 616 of Figure 6. This is preferably made here with a section of elliptical shape already in the unsolicited state. Unlike FIG. 3, the deflector 140, the support segment 322 and the wiper and cleaning segment 323 are made here by way of example in one piece. In addition, the support segment 322 is provided here only with a spring rail 310. And for example, in the support member 300 there is a cavity 912. FIG. 10 shows the broom wiper 100 of FIG. 9 with the hollow body 615 and the fiber unit 330 of FIG. 3 installed on the hollow body 615 acts at least in a zone through a through-orifice 1021 in the inner hollow space 614 of the hollow body 615. According to one development, the inner hollow body 614 constitutes a fiber reservoir 1014 which remains in fluid connection with at least one fiber unit 330. The fiber reservoir 1014 is preferably designed to evacuate the washing liquid, for example the wiping or rain water or the cleaning liquid of the fiber unit 330 during a corresponding wiping operation and / or for supplying cleaning liquid with at least one unit of fibers 330 during a cleaning operation.

The fiber unit 330 can thus take washing liquid during a cleaning operation, for example from the window 120 of the vehicle according to FIG. 1, and then transfer this liquid by capillary effect into the fiber reservoir 1014. The wash liquid will then be taken under a relatively light vacuum or vacuum into the cavity 614 of the hollow body 615 from the fiber tank 1014 to evacuate it. Thus the fiber reservoir 1014 remains relatively dry and has a suction capacity or a capillary force capacity of the fiber reservoir 1014. In contrast, during a cleaning operation, the cleaning liquid is conducted through the body 616 in the fiber tank 1014. In addition, when the wiper blade 100 is at rest, a self-cleaning of the fiber tank 1014 or the fiber unit 330 can be carried out. FIG. 11 shows a wiper blade 100 of Fig. 1 with the support segment 322 of Fig. 9 and the wiper and cleaning segment 323 of Fig. 3; the wiper and cleaning segment 323 has on the first and the second longitudinal side 1152, 1151 (left and right according to FIG. 11) a widening 1110, 1111 respectively. The enlargements 1110, 1111 each have a housing 1122, 1121 respectively provided with the fiber unit 330 of Figure 3 with the fiber device 200 of Figure 2. According to another development, the fiber device equipping the first The long side 552 includes the fiber unit 330 and the fiber device 200 fitted to the second long side 551 comprises the fiber unit 530 of FIG. 5 or vice versa.

Fig. 12 shows the wiper blade 100 of Fig. 1 with the support segment 322 of Fig. 3 and the wiper and cleaning segment 323 of Fig. 7 as well as the hollow body 615 of Fig. 6 In contrast to FIG. 6, the latter comprises at its periphery 616, a recess assembly 1230 1231, 1232, 1233 and the housing 321 for each receiving the fiber device produced as the fiber device 200 of FIG. equipped with at least one fiber unit 330 of Fig. 3. Fig. 12 further shows, by way of example, first, second and third positions 1210, 1211, 1212 of the vehicle window 120 of the figure 1.

The distribution of the fiber devices 200 may be, for example, a circular distribution at the periphery 616 of the hollow body 615 so that the wiper blade 100 is independent of the respective application angle of the fiber unit. 330. For this, the fiber device 200 has a first point of contact 1220 for its first position 1210, a second point of contact 1221 for the second position 1211 and a third point of contact 1222 for the third position 1212 on the window 120 of the vehicle ; thus the quality of wiping and / or cleaning by the sweeping and / or cleaning operation is constant.

FIG. 13 shows the wiper blade 100 of FIG. 1 with the support segment 322 of FIG. 9 and the wiper and cleaning segment 323 of FIG. 12. As in the stressed state, the segment 322 has in cross section the hollow body 615 of the wiping and cleaning segment 323 of elliptical shape, its air attack surface and its lifting surface are relatively reduced; contrary to FIGS. 9 and 12, the wiper blade 100 does not have the deflector 140 of FIG. 1. FIG. 14 shows the wiper blade 100 of FIG. 13, the hollow body 615 of FIG. 14 a, for example, an outer periphery 1416 smaller than that of Figure 13. According to one development, the outer periphery 1416 of the hollow body 615 has a fiber device 1500 with at least one fiber unit 1430 preferably As the microfiber rope 1450. The microfiber rope according to the present invention is a microfiber unit having a rope structure with at least one relief 1461-1462 and a hollow 1471-1472, i.e. a wider periphery. big and smaller. Preferably, the chord structure comprises a set 1460 of reliefs 1461-1462 which define a larger, discontinuous outer surface as well as a set 1470 of troughs 1471-1472 which define a smaller, discontinuous, interrupted outer periphery. by the reliefs 1461-1462. According to a development, the cord of the microfibers 1450 is preferably fastened by a claw tape fastener 1410 to the outer periphery 1416 of the hollow body 615. The microfiber string 1450 could also be bonded to the hollow body 615 or fix it to this one by another type of connection. FIGS. 15 to 17 each show the micro-fiber rope 1450 of FIG. 14 comprising an assembly 1460 of reliefs 1461- 1462 and recesses 1471-1472. The structure of the microfibre rope 1450 of Figure 16 is rotated at an angle of inclination (a) and in Figure 17 at an angle of inclination ((). In case of torsion, these angles also provide torsion, wipe quality and cleaning without leaving space by the wiping and / or cleaning operation.

Figure 18 shows the wiper blade 100 of Figure 1 with the spring rail 310 of Figure 1 and the hollow body 615 of Figure 6; the outer periphery 616 comprises, for example, a fiber device 1500 preferably made in the manner of a micro-fiber nonwoven 1810. This is similar to a fiber reservoir 1014 of FIG. 10 to evacuate the wiper fluid and / or for dispensing cleaning liquid. The hollow body 615 is preferably in the form of a pipe, made of a permeable elastic material, such as rubber, a thermoplastic elastomer TPE or a flexible plastic material and in particular permeable to a liquid.20 NOMENCLATURE OF THE MAIN ELEMENTS 100 Wiper blade -glace 101, 102 Axial ends of the wiper blade 110 Wiper arm 120 Vehicle window 130 Attachment 140 Deflector 150, 151 End cap 160 Wiper blade 170 Wiper 200 Fiber device 202 Wiper Direction 211 Window Area 214 Dirt or Wet Trace 220-227 Microfibers 300 Support Element 312, 313 Groove Side Cavity 310, 311 Spring Support Rail 322 Support Segment 323 Wiper and Seal Segment cleaning 324 Bottom side of support element 325 Bottom side of wiper element 330 Fiber unit 410 Stabilization segment 412, 413 Lateral recess 422 Intermediate segment 430 Ent tilt bar 501 Arrow 502 Arrow 530 Second fiber unit 551, 552 Longitudinal side of the wiper element 614 Inner cavity 615 Hollow body of substantially rectangular section 616 Outer periphery 912 1210 1211 1212 14 Hole First position Second position Third position 1014 Fiber tank 1021, 1122 Housing 1130 Set of recesses 1131, 1132, 1133 Recesses 1151-1152 Longitudinal side 1220 First point of contact 1221 Second point of contact 1222 Third point of contact 1416 External periphery 1430 Fiber unit 1450 Microfibre rope 1461 , 1462 Relief 1471, 1472 Hollow 1500 Fiber device 1810 Non-woven microfiber 25

Claims (12)

CLAIMS 1 °) Wiper blade (100) having a support segment (322) for attachment to a wiper arm (110) and a wiper and cleaning segment (323) connected to the wiper arm support segment (322) and which comprises at least one wiper and cleaning element (160) for wiping and / or cleaning operation, wiper blade characterized in that the element wiper and cleaner (160) comprises a fiber device (200) with at least one fiber unit (330, 530), in particular a microfiber device having at least one microfiber unit. Wiper blade (100) according to claim 1, characterized in that the wiper and cleaning element (160) comprises a wiping lip (320) provided with the fiber device (200). . Windscreen wiper blade according to Claim 1, characterized in that the wiper and cleaning element (160) has a housing (321) for receiving at least one segment of fiber unit (330, 530). 4) Wiper blade according to claim 3, characterized in that the housing (321) has at least in segment, a groove shape. Windscreen wiper blade according to Claim 1, characterized in that a first longitudinal side (552) of the wiper and cleaning element (160) has a first fiber unit (330) for the wiper blade. the cleaning operation and the second longitudinal side (551) of the wiping and cleaning element (160) has a second fiber unit (530) for the wiping operation. Windscreen wiper blade according to Claim 1, characterized in that the wiper and cleaning segment (323) is in the form of a hollow body (615) with an internal cavity (614), the fiber device ( 200) being provided at least in segments on the side (325) not facing the support segment (322) of the outer periphery (616) of the hollow body (615). Windscreen wiper blade according to Claim 6, characterized in that the fiber unit (330, 530) penetrates at least one zone into the inner cavity (614). The wiper blade according to claim 7, characterized in that the inner cavity (614) comprises a fiber reservoir (1014) communicating by a fluid connection with at least one fiber unit (330, 530). ). Windscreen wiper blade according to Claim 8, characterized in that the fiber container (1014) serves to discharge the wiper fluid from the fiber unit (330-530) and / or to provide the cleaning liquid at the fiber unit (330, 530). 10 °) Wiper blade according to claim 1, characterized in that the fiber unit (330, 530) is constituted by a microfiber rope (1450). 11 °) Wiper blade according to claim 1, characterized in that the fiber device (1500) is in the form of a microfiber nonwoven (1810). 12) Wiper comprising a wiper blade (100) provided with a support segment (322) for attachment to the wiper arm (110) and a wiper and cleaning segment (323) connected to the support segment (322) and which comprises at least one wiper and cleaning element (160) for performing a wiping and / or cleaning operation, wiper characterized in that the element wiper and cleaner (160) comprises a fiber device (200) having at least one fiber unit (330, 530), especially a microfiber device with at least one microfiber unit.