EP2244916A1 - Device for dispensing and spraying a washing liquid onto the window of an automobile and wiper system including such spraying device - Google Patents
Device for dispensing and spraying a washing liquid onto the window of an automobile and wiper system including such spraying deviceInfo
- Publication number
- EP2244916A1 EP2244916A1 EP09704803A EP09704803A EP2244916A1 EP 2244916 A1 EP2244916 A1 EP 2244916A1 EP 09704803 A EP09704803 A EP 09704803A EP 09704803 A EP09704803 A EP 09704803A EP 2244916 A1 EP2244916 A1 EP 2244916A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- pressure
- projection
- window
- dispensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 73
- 238000005406 washing Methods 0.000 title claims abstract description 32
- 238000005507 spraying Methods 0.000 title claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims description 19
- 239000011521 glass Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B60S1/46—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
-
- 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
- B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
- B60S1/485—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
-
- 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
- B60S1/3806—Means, or measures taken, for influencing the aerodynamic quality of the wiper blades
- B60S1/381—Spoilers mounted on the squeegee or on the vertebra
-
- 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
- B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
- B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
- B60S1/3881—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section in additional element, e.g. spoiler
Definitions
- the present invention relates to a device for dispensing and spraying a washing liquid on a motor vehicle window. It also relates to a wiper system comprising said projection device.
- the invention finds a particularly advantageous application in the field of wiper systems for motor vehicles, and more particularly in that of wiper systems comprising flat wiper blades, also known by the generic term of "Fiat Blade”.
- washing liquid spray devices consist of one or more nozzles placed on the hood of the vehicle.
- a pump performs under a pressure of 2 to 4 bar the transfer of a certain amount of washing liquid from a tank up to to the nozzles, the liquid arriving on the glass to be cleaned, the windshield of the vehicle for example, in the form of jet or tablecloth.
- an object of the invention is to provide a device for dispensing and spraying a washing liquid on a window of a motor vehicle, said device comprising at least one liquid transport ramp pierced with at least one a washing liquid projection hole on said window, which would project a larger quantity of liquid when the temperature outside the vehicle becomes, for example low (below 5 ° C) or negative, while maintaining a liquid flow rate reduced to the minimum necessary when the outside temperature is positive.
- said transport ramp further comprises at least one additional projection means adapted to project the washing liquid on said window under a liquid pressure greater than a threshold given pressure.
- the projection device allows to project the washing liquid through the (s) only (s) hole (s) projection under a nominal pressure ensuring a minimum flow, and this as long as the outside temperature remains above a given threshold, for example the freezing temperature of water, ie 0 ° C.
- the washing liquid can be also projected, in addition to the projection holes, through the complementary projection means, it suffices for this purpose. bring the pressure of the liquid to a value greater than the pressure threshold beyond which the complementary projection means is adapted to project liquid.
- This pressure threshold is a characteristic quantity of the complementary projection means.
- the respective values of the nominal liquid pressure for the positive temperatures and the pressure threshold are chosen such that the pressure threshold is greater than the nominal pressure. This produces an increase in liquid flow only for negative temperatures, in accordance with the purpose of the invention.
- said complementary projection means comprises a perforation made through said transport ramp, said liquid pressure threshold being PatXML 4/10 WFR1194 PCT
- Perforation means an opening made without removal of material, for example by means of a needle passing through an elastomeric transport ramp.
- the notion of "hole” on the contrary implies a removal of material.
- the perforation is "closed” in the sense that its edges remain contiguous, a pressure force greater than a given threshold is necessary to separate them and "open” and the perforation.
- said complementary projection means comprises a complementary hole pierced through said transport ramp, and a closure means adapted to close said complementary hole under the action of a elastic return force, said pressure threshold being defined by the pressure to be applied to said closure means to exert a force equal to said elastic return force.
- the invention also relates to a wiper system of a motor vehicle window, comprising a projection device according to the invention.
- the wiper system comprises a temperature sensor for determining the washing liquid pressure to be supplied by at least one pump. supply according to the temperature outside the vehicle measured by said sensor.
- said transport ramp extends along a wiper blade of the wiper system.
- said wiper blade is a flat broom.
- the invention furthermore relates to a windscreen wiper blade comprising a PatXML 5/10 WFR1194 PCT
- Figure 1 is a sectional view of a flat wiper blade comprising a liquid projection device according to the invention.
- Figure 2 is a side view of a transport ramp of the projection device of Figurei.
- Figure 3a is an operating diagram of a wiper system according to the invention to a feed pump.
- Figure 3b is an operating diagram of a wiper system according to the invention with two feed pumps.
- Figure 4 is a graph giving the number of effective projection orifices depending on the outside temperature of the vehicle.
- Figure 5 is a sectional view of a transport ramp comprising a variant of the complementary projection means according to the invention.
- Figure 1 is shown in section a wiper blade belonging to a wiper system of a motor vehicle window, windshield or rear window in particular.
- the wiper blade of Figure 1 is made in accordance with the technology "flat blade” or “Fiat Blade” and has as such a longitudinal support 10 extruded semi-rigid plastic material in which is housed a metal stiffening rod, or “vertebra", of curved shape, extending substantially over the entire length of the blade so as to create a distribution of pressure on the window as uniform as possible.
- the support 10 also comprises a longitudinal claw 12 in which is introduced an elastomeric wiper blade 30.
- a device 40 for projecting a washing liquid of the vehicle window comprising one or two ramps 41 of liquid transport which also extend the along the wiper blade. These ramps 41 are pierced with orifices for spraying washing liquid on the window, referenced PatXML 6/10 WFR1194 PCT
- the projection device 40 is associated with an aerodynamic deflector 50 in the same molded elastomer part, reinforced by a longitudinal rib 13 of the support 10.
- FIG. 2 shows that the projection orifices 42 of the transport ramps 41 are of two types, namely permanently open projection holes 42a and complementary projection means constituted in this exemplary embodiment by perforations 42b capable of to spray the washing liquid on the vehicle window provided that the liquid pressure is sufficient, that is to say at least equal to a given pressure threshold.
- said perforations 42b are made without removal of material, by laser in the example of the notches cross of Figure 2 or by means of a cold needle. It is understood that, if the liquid pressure inside the ramp 41 is small, only the holes 42a open at all times are operational and let the liquid pass, while the perforations 42b remain closed, the pressure being below the threshold of pressure necessary to overcome the stiffness of the elastomer and spread the edges of the perforations so as to allow the passage of the washing liquid. Note that the holes 42a are made by removal of material, by machining or by means of a laser or a heated needle.
- This configuration is suitable when the amount necessary for satisfactory cleaning of the window is limited, especially to remove traces of mud or insect residues, in positive outdoor temperature conditions. It is then expected from the ramp supply system 41 in washing liquid that it supplies the liquid under a pressure lower than the opening threshold of the perforations 42b.
- the pressure of the liquid in the ramp 41 is brought by the system PatXML 7/10 WFR1194 PCT
- FIG. 3a illustrates a wiper system incorporating at least one ramp 41 provided with projection orifices 42a, 42b as they have just been described with reference to FIG. 2.
- the ramp 41 is fed from a reservoir 62 of washing liquid via a pump 61 adapted to deliver the liquid under a first pressure P 0 , lower than the opening threshold P 8 of the perforations 42b, and under a second pressure P 1 to less than the P 8 threshold.
- the outside temperature T supplied, directly or indirectly, by a temperature sensor 70 installed on the vehicle is compared with a threshold temperature T 8 , the temperature 0 ° C of freezing water in the embodiment example treated here.
- the pump 61 is set to provide the washing liquid to the ramp 41 under a pressure equal to the first pressure P 0 . In this case, the liquid consumption is reduced.
- Figure 3b shows a wiper system with two pumps 61a, 61b supply.
- the graph of FIG. 4 gives, as a function of the outside temperature T, the number of holes 42a that are efficient in dotted lines, the number of PatXML 8/10 WFR1194 PCT
- perforations 42b effective in phantom, and the total number of effective orifices in solid line The reduction in the number of orifices effective at low temperatures is due to the increase in the viscosity of the washing liquid, which is particularly noticeable at the level of the furthest orifices.
- Figure 5 is an alternative embodiment of the complementary closure means of the invention.
- the complementary closure means 42c comprises, on the one hand, a complementary hole 421c, similar to the holes 42a of Figure 2, pierced through the transport ramp 41 and, on the other hand, a means 422c for closing the hole 421c constituted, in the example of FIG. 5, by a tongue-shaped element of the wall of the ramp 41 able to be applied against the hole 421c under the action of a force of return related to the elastic nature of the material in which the ramp 41 is made.
- the pressure threshold is in this case defined by the pressure to be applied to the shutter means to exert a force equal to said restoring force.
- the closing element 422c closes on the hole 421c by elastic hinge effect.
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0800390A FR2926765B1 (en) | 2008-01-25 | 2008-01-25 | DEVICE FOR PROJECTING A WASHING FLUID OF A GLASS OF A MOTOR VEHICLE AND WIPING SYSTEM COMPRISING SAID DEVICE FOR PROJECTION |
PCT/EP2009/050487 WO2009092669A1 (en) | 2008-01-25 | 2009-01-16 | Device for dispensing and spraying a washing liquid onto the window of an automobile and wiper system including such spraying device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2244916A1 true EP2244916A1 (en) | 2010-11-03 |
Family
ID=39718529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09704803A Withdrawn EP2244916A1 (en) | 2008-01-25 | 2009-01-16 | Device for dispensing and spraying a washing liquid onto the window of an automobile and wiper system including such spraying device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2244916A1 (en) |
FR (1) | FR2926765B1 (en) |
WO (1) | WO2009092669A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2957575B1 (en) * | 2010-03-16 | 2013-04-12 | Peugeot Citroen Automobiles Sa | METHOD FOR MANUFACTURING A WASH FLUID SPRAY FOR A GLASS OF A MOTOR VEHICLE |
DE102011078178A1 (en) * | 2011-06-28 | 2013-01-03 | Robert Bosch Gmbh | Wiper device, in particular motor vehicle windshield wiper device |
FR3040948B1 (en) * | 2015-09-15 | 2017-09-08 | Valeo Systemes Dessuyage | METHOD AND DEVICE FOR DEFROSTING A VEHICLE GLASS |
EP3144191A1 (en) * | 2015-09-15 | 2017-03-22 | Valeo Systèmes d'Essuyage | Method for de-icing a vehicle window |
DE102018251711A1 (en) * | 2018-12-27 | 2020-07-02 | Robert Bosch Gmbh | Wiper blade device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2704817A1 (en) * | 1993-05-03 | 1994-11-10 | Eropol Finance Dev | Windscreen wiper blade with built-in sprinkling booms |
FR2748437B1 (en) * | 1996-05-10 | 1998-06-26 | Journee Paul Sa | MOTOR VEHICLE WINDSCREEN WIPER HAVING IMPROVED WINDOW CLEANING MEANS |
US5957384A (en) * | 1997-08-26 | 1999-09-28 | Lansinger; Jere Rask | Windshield heated wiping system |
DE19909939A1 (en) * | 1999-03-06 | 2000-09-07 | Bayerische Motoren Werke Ag | Automobile windscreen cleaning method has cleaning medium deposited on windscreen and removed after timed interval during cleaning cycle activated when vehicle is not in use |
DE10058454A1 (en) * | 2000-11-24 | 2002-06-06 | Bosch Gmbh Robert | Wiper arrangement and method for producing a wiper arrangement |
DE102005030201A1 (en) | 2005-06-29 | 2007-01-11 | Valeo Systèmes d`Essuyage | wiper device |
-
2008
- 2008-01-25 FR FR0800390A patent/FR2926765B1/en active Active
-
2009
- 2009-01-16 WO PCT/EP2009/050487 patent/WO2009092669A1/en active Application Filing
- 2009-01-16 EP EP09704803A patent/EP2244916A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009092669A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009092669A1 (en) | 2009-07-30 |
FR2926765A1 (en) | 2009-07-31 |
FR2926765B1 (en) | 2010-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3300970B1 (en) | Device for cleaning an optical sensor, and associated driver assistance system and cleaning method | |
EP2861471B1 (en) | Wiper blade including a device and a means for spraying a washing liquid | |
EP3002169B1 (en) | Windscreen-wiper blade, system and method for wiping a glass surface of a motor vehicle | |
EP2504206B1 (en) | Windscreen-wiper blade and device for wiping and washing a glazed surface of a motor vehicle and corresponding wiping and washing method | |
EP3409544B1 (en) | Cleaning system for motor vehicle | |
EP2244916A1 (en) | Device for dispensing and spraying a washing liquid onto the window of an automobile and wiper system including such spraying device | |
FR2929904A1 (en) | Cleaning liquid spraying device for e.g. flat wiper blade, of motor vehicle, has transporting ramps equipped with outlet orifices, where orifices spray cleaning liquid under liquid pressure higher than pressure applied for opening orifices | |
FR3141417A1 (en) | Vehicle wiper system | |
WO2009127583A1 (en) | Device for spraying washing liquid onto a car window | |
EP2900525B1 (en) | Device for actuating a driving arm of a wiper, in particular for the rear window of a vehicle, and wiping system equipped with such a device | |
FR2907081A1 (en) | Washing device for cleaning external surface of e.g. front windscreen, has vapor producing unit mounted on duct and feed pipe such that vapor is directly projected in contact of external surface of glass by spraying nozzle | |
FR3058115A1 (en) | DEVICE AND METHOD FOR WIPING AND / OR CLEANING A GLASS SURFACE OF A VEHICLE USING AN ACTIVE LIQUID | |
EP2841314A1 (en) | Wiper, washing and wiping system, and related vehicle | |
WO2008006982A1 (en) | Windshield wiper for wiping a panoramic windshield having lateral surfaces, corresponding wiping system and its utilization | |
FR2960797A1 (en) | Jet for use in washing liquid projecting device to project washing liquid on glass pane of front windscreen of motor vehicle, has non-return valve provided with hole to collect ambient air and to mix ambient air with washing liquid | |
FR3025473A1 (en) | ICE WIPER COMPRISING A AXIS WITH A SPRAY | |
EP3083345A1 (en) | System for wiping a vehicle windshield | |
WO2004106127A1 (en) | System for cleaning a window panel | |
WO2012080676A1 (en) | Windscreen wiper blade including a washer-liquid nozzle and a gutter for guiding the cleaning liquid | |
WO2022269085A1 (en) | Wiper of a wiper system | |
FR2677939A1 (en) | Nozzle device for cleaning motor vehicle screens (windows) | |
WO2022175417A1 (en) | Device for connecting a wiper blade to an arm of a wiping system | |
WO2018108556A1 (en) | System for spraying liquid onto a glazed surface of a vehicle | |
FR3079485A1 (en) | CLEANING AND / OR DEFROSTING PROCESS, CORRESPONDING DEVICE AND SEAL | |
FR3005916A1 (en) | ICE WASH MULTI JETS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20100722 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CAILLOT, GERALD |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CAILLOT, GERALD |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20120529 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20121009 |