Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/38—Wiper blades
  • B60S1/3848—Flat-type wiper blade, i.e. without harness
  • B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
  • B60S1/3862—Transport of liquid there through
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
  • B60S1/48—Liquid supply therefor
  • B60S1/52—Arrangement of nozzles; Liquid spreading means
  • B60S1/522—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms
  • B60S1/524—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms arranged in wiper blades

Definitions

• the invention relates to the wiping of glass panel and, in particular, the wiper blades.
• a conventional windscreen wiper blade generally comprises a rod which is alternately rotated by a reversible drive motor, which rod supports a flexible squeegee (also called a blade) of rubber or similar material, which is applied against the surface of the windscreen wiper. breeze thanks to the assembly between it and the rod of a system of spring bar, deformable according to the angular position of the rod and the curvature of the windshield in the area on which rests the squeegee.
• the cleaning of a windshield or a rear window is conventionally carried out by spraying a washing fluid on the glass surface using nozzles arranged on the hood of the vehicle or on the awning of the vehicle. These jets located at a distance from the glass surface to be cleaned are very delicate to adjust to obtain an effective spray.
• a wiper blade having an elongate flexible squeegee and a conduit outlet arranged so as to spread a laminar jet of liquid according to the invention.
• the duct outlet is shifted to the side of the flexible squeegee and is positioned relative to the lip of the squeegee to indirectly diffuse the wash liquid evenly into the longitudinal concavity of the lip, the liquid exiting the spray orifice reaching the glass surface after spreading in the concave part of the squeegee, from the point of impact towards the end of the squeegee.
• the washing liquid is only trapped on the lip of the wiper blade and the total visibility is provided to the driver.
• the operation of washing and wiping a glass panel has two main stages.
• a first step during which the wiper is in a rest position, the nozzle spreads a laminar jet of washing liquid into the concavity of the squeegee lip over a major portion of the length separating the nozzle from the end. of the raclette.
• the sweeping is performed after the lip of the squeegee is turned over.
• the washing fluid is interposed in the angle formed between the end of the lip of the squeegee and the glass surface over the entire length of the squeegee, so that the washing fluid is distributed regularly along the lip of the squeegee.
• One of the disadvantages of these brushes is that it imposes a delay between the first step and the second step so that the fluid can be distributed uniformly along the lip.
• One of the aims of the invention is to reduce the delay between, on the one hand, the activation of the pump to put the washing liquid on the concave portion 5 of the squeegee and, on the other hand, the departure of the broom for wiping, that is to say the start of the passage between the rest position to the extreme position.
• a wiper blade of a glazed panel comprising a flexible squeegee and a washing liquid projection system, said wiper blade being suitable when mounted movably
• the projection system comprises a washing liquid spray orifice, and a separator comprising a first and second guide means, said projection orifice being oriented
• said guide means being arranged so that the spray wash liquid spills over the concave portion formed by the squeegee when the brush is in the rest position, the first means and the second washing liquid guiding means being respectively directed towards a first end and a
• the first and second guide means each comprise a ramp, each of the ramps comprising a first end oriented to collect the washing liquid sprayed by the spray orifice and a second end oriented to project the collected wash liquid to the concave portion formed by the squeegee.
• the separator further comprises a diffusion orifice arranged to diffuse a part of the liquid, projected by the projection orifice, onto a portion of scraper disposed between the first and the second guide means.
• the first and the second ramp are joined at their first end.
• the diffusion orifice is located at the first ends of the ramps.
• the ramps are curved shapes.
• the wiper blade according to the invention comprises a tube comprising a first straight part, one end of which is connected to a washing liquid supply pipe, a second curved part and a third straight part of which one end is projection orifice.
• the wiper blade according to the invention comprises fixing lugs intended to maintain the third straight part of the tube.
• the invention also relates to a wiper and washing system comprising at least one blade according to one of the preceding claims.
• the invention also relates to a vehicle comprising a wiper and washing system or a wiper blade according to the invention.
• the broom according to the invention has the advantage of reducing the delay between the activation of the pump and the departure of the blade for wiping.
• the use of two holes in the middle of the broom allows to pour more quickly the washing liquid on the squeegee.
• the liquid spreads faster on the squeegee because the distance to travel is shorter than when the nozzle is installed at one end of the squeegee.
• the broom according to the invention also has the advantage of allowing the use of a low pressure pump.
• the washing liquid can be thrown with a lower force than when the nozzle is installed at one end of a squeegee because the distance to travel for the liquid to spread to one end of the squeegee is lower.
• the blade according to the invention has the advantage of providing better operation at low temperatures. Indeed, at low temperature, particularly for temperatures below 0 ° C, the viscosity of the washing liquid increases. When the one is projected on the
• the squeegee it does not spread more evenly from one end to the other of the squeegee and washing is no longer effective.
• the distance to be traveled by the washing liquid is less.
• the liquid spreads evenly over the entire squeegee and the washing remains effective.
• the invention also has the advantage of obtaining two jets of liquid for washing while implementing a limited number of parts for the projection system.
• the projection system works with a single nozzle and a separator, the separator can take the form of a single molded part.
• FIG. 1 illustrates a rod and a wiper blade according to the invention
• FIG. 2 illustrates a perspective view of the system of a projection system according to the invention covered with a connecting cap;
• FIG. 3 and 4 illustrate a detail of the system of a projection system according to the invention.
• Figure 1 illustrates a rod 10 and a wiper 15 according to the invention.
• the rod 10 comprises at one of these two ends a housing 1 1 and at its other end a connecting cap 12.
• the housing 1 1 is connected to a
• the driver 13 is intended to be connected to a motor (not shown) to provide reciprocating rotation of the brush.
• the connecting cap 12 connects the rod 10 to the wiper blade 15 so that the wiper blade 15 is rotatable relative to the rod 10 at the connecting cap 12 in a manner that orthogonal axis to the stem 10.
• the brush 15 comprises a spray orifice whose jet is divided into several jets by a separator. Each of the jets is oriented) by the separator to a portion of squeegee 17 (or wiper blade).
• the wiper blade 15 comprises a deflector 16, a wiper blade 17 and an adapter 18.
• the deflector 16 allows to press the wiper blade 15 to the windshield when the vehicle moves, especially at a high speed.
• the wiper blade 17, 5 intended to be in contact with a vehicle windshield, is generally made of a flexible material of the rubber type.
• the adapter 18 provides the interface between the wiper blade 15 and the rod 10.
• the wiper blade 15 when mounted movable about an axis substantially orthogonal to a glazed panel, is adapted to assume a rest position in which the squeegee 17 forms a concave portion.
• the wiper blade 15 according to the invention comprises a projection system 20 at the level of the adapter 18.
• the projection system 20 comprises a spray orifice 23 of washing liquid, and a separator comprising a first 21 and a second
• the projection orifice 23 is oriented to project the washing liquid to the separator.
• the guide means 21, 22 are arranged so that the spray wash liquid spills over the concave portion formed by the blade 17 when the blade 15 is in the rest position.
• the first washing liquid guiding means 21 being oriented
• the projection orifice 23 is a end of a tube (or diffuser) bent.
• the tube is connected to one end of a washing liquid supply pipe 24.
• the other end of the pipe 24 is connected to a washing system (not shown) comprising for example a washing liquid reservoir and a pump.
• the tube comprises a first rectilinear part (whose end is connected to the pipe), a second curved part and a third rectilinear part whose end is the projection orifice 23.
• the ratio between the length of the third portion) rectilinear and the inside diameter of the tube is equal to at least six times the inner diameter of the tube and preferably equal to a value substantially between eight and ten to obtain a laminar jet .
• the inside diameter of the tubes is substantially between 0.6 millimeters and 1.5 millimeters.
• the connecting cap 12 is provided with an opening 28 allowing the passage of the pipe 24.
• the first and the second means each comprise a ramp.
• Each of the two ramps 21, 22 comprise a first end oriented to collect the liquid
• the second end of the first ramp 21 is oriented to project the washing liquid to the first end of the brush 15.
• the second end of the second ramp 22 is
• the first 21 and the second 22 ramp are joined at their first end.
• the separator further comprises a diffusion orifice 25 arranged so as to project liquid onto a scraper portion disposed between the first 21 and the second guide means.
• the diffusion orifice 25 is located at the first ends of the ramps 21, 22.
• the washing liquid is led to the elbow tube which projects it over two ramps 21, 22 for guiding the washing liquid.
• the junction of these two ramps 21, 22 is formed in line with the orifice 23 of the bent tube.
• the main jet is separated and guided by the two guide ramps 21, 22.
• These guide ramps 21, 22 are designed so that the washing liquid jet is correctly directed towards the blade 17 of the blade 15.
• the ramps 21, 22 are of curved shapes.
• the adapter 18 is mounted movably relative to the cap 12.
• the cap 12 has a through hole 26.
• the adapter has an axis 27 of diameter equivalent to the hole 5 opening 26. The axis and the hole cooperating to rotate the adapter 18 relative to the cap 12.
• the adapter 18 is an elongated piece whose longitudinal axis is parallel to the longitudinal axis of the wiper blade 15.
• the adapter 18 has a lower part located near the squeegee 17 and an upper part resting on the deflector 16.
• the separator is arranged on a lateral face of the adapter 18.
• the separator and the adapter 18 may constitute a single piece of material obtained by molding a plastic material.
• Integrating the projection system with the adapter 18 allows the system to diffuse the jet as close as possible to the blade 17 and to overcome the rotation of the adapter 18 with respect to the connecting cap 12. Indeed, depending on windshields and during scanning, the kinematics of the assembly generates angular variations between the adapter 18 and the connecting cap 12 along the axis of rotation.
• the adapter 18 and therefore the projection system 20 are located substantially equidistant from the ends of the wiper blade 15.
• the adapter 18 is provided with a groove 30 allowing the passage of the pipe 24.
• the groove 30 comprises a rectilinear portion and a curved portion.
• the radius of curvature of the curved portion is large enough not to significantly increase the load factor.
• the bent tube is held in position by fixing lugs 31 integral with the adapter 18.
• the orifice 23 of the tube, when it is fixed, is oriented towards the separator.
• the fastening tabs 31 operate for example by clipping.
• the orifice 23 of the tube does not require any adjustment when it is mounted on the blade as its orientation is imposed by the lugs 31.
• the invention also relates to a wiper and washing system comprising at least one blade according to the invention and a pump connected to the projection system.
• the pump has a pressure substantially lower than five bars.
• the invention also relates to a vehicle comprising a wiper and washing system or a wiper blade according to the invention.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Water Supply & Treatment (AREA)
• Cleaning By Liquid Or Steam (AREA)
• Cleaning In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47902191

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (4)

• 2012
  • 2012-12-20 FR FR1262438A patent/FR3000001B1/fr not_active Expired - Fee Related
• 2013
  • 2013-12-06 CN CN201380067390.8A patent/CN104955686A/zh active Pending
  • 2013-12-06 WO PCT/FR2013/052979 patent/WO2014096616A1/fr active Application Filing
  • 2013-12-06 EP EP13821860.7A patent/EP2934958A1/de not_active Withdrawn

Non-Patent Citations (1)

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