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

• a vehicle includes different glass surfaces, and in particular arranged at the front or at the rear of the vehicle, allowing a driver to observe the external environment and more particularly the road scene.
• the glass surface must be transparent and optically neutral so that the driver can correctly observe the environment around the vehicle.
• Each glass surface of the vehicle arranged between the passenger compartment and the external environment is exposed to weather conditions, such as rain for example, but also to certain particles or dirt which can obstruct or hinder at least part of the driver's vision. the external environment.
• the vehicle includes a wiping system capable of wiping and thus evacuating the water or the various elements likely to be present on the glass surface of the vehicle outside said glass surface.
• Such wiping systems include at least one drive arm and a wiping blade.
• the drive arm is secured to the vehicle by one of its ends and carries the wiper blade by its opposite end, and it is in particular capable of performing a back and forth movement allowing the wiper blade to move sweep a large portion of the glass surface.
• the wiping blade comprises a wiping blade intended to be pressed against the glass surface, a rigid blade support and a connector intended to connect the blade support to the drive arm of the wiping system.
• the wiper blade also includes aerodynamic deflection elements mounted on the rigid blade support and arranged on either side of the connector.
• This projection system may include projection nozzles installed on the hood of the vehicle and/or a projection system mounted directly on the drive arm and/or on the wiper blade.
• a routing circuit within the connector which comprises a routing conduit connected to the fluid inlet and a distribution conduit connected to the fluid outlet, with the routing conduit which opens into the distribution conduit by forming a distribution node.
• the production of the distribution conduit which extends substantially longitudinally within the connector, from one fluid outlet to the other, is simple to produce by drilling.
• the production of the routing conduit, at the heart of the connector and which can extend in several successive directions, is more complicated and may involve drilling which leads to the exterior of the connector at the distribution node.
• Such an on-board system is particularly effective in that it makes it possible to target the projection of fluid on the glass surface just before the wiper blade of the broom scrapes the glass surface.
• the holes are made at regular intervals in each aerodynamic deflection element so that the glass surface is watered evenly.
• the distribution of the orifices on the deflection elements as it is known in the prior art does not make it possible to project the fluid homogeneously onto the glazed surface since at least the connector is not equipped with means of projections.
• zones of the glazed surface do not receive fluid, or at the very least that a zone of the glazed surface facing an zone of the blade comprising the connector receives a smaller quantity of projected fluid that the neighboring zones opposite zones of the brush comprising deflection elements. In these areas of the glass surface receiving little or no fluid, the wiping system is unable to effectively remove particles and/or dirt.
• the wiping blade comprises in particular a rigid blade support, made integral with the connector and on which are mounted on the one hand a wiping blade intended to be placed on the glass surface to be cleaned and on the other hand a deflection element aerodynamically configured to deflect an air flow and to participate in pressing the wiper blade onto the glass surface.
• the connector has within it a cleaning fluid delivery circuit which comprises at least one delivery conduit and a distribution conduit.
• the routing circuit can include a greater number of routing conduits as long as the connector includes a distribution node according to the invention with a routing conduit which opens into the distribution conduit.
• This distribution conduit extends longitudinally along the connector and is bordered at each of its longitudinal ends by a connection element configured to cooperate with a broom deflection element and having the shape of a cannula.
• the delivery conduit allows the cleaning fluid to circulate to the distribution conduit so that the cleaning fluid entering the connector reaches the distribution conduit by first circulating through the routing conduit.
• the production of this routing conduit by a drilling operation involves an opening on the outside of the connector in the distribution node at the junction of the routing conduit and the distribution conduit, this opening being formed in a wall of the connector in the extension of the delivery conduit. This opening is closed by the cover so that the cleaning fluid which passes through the distribution node can mainly be directed into the distribution conduit and then into the projection ramps formed within the aerodynamic deflection elements of the broom and connected to the connector at the end of the distribution conduit.
• the cover is advantageously pierced with at least one projection orifice.
• this at least one projection orifice is through, that is to say that it opens from the cover through one end into the distribution conduit and through an opposite end outside the connector.
• a small part of the cleaning fluid passing through the distribution node can be projected outside the connector and directed onto the glass surface facing the connector. This helps to distribute the projection of cleaning fluid more regularly on the glass surface, since cleaning fluid is projected at the connector, between the holes provided elsewhere in the ramps integrated into the aerodynamic deflection elements on both sides. 'other of this connector.
• the connector according to the invention and more particularly the presence of this at least one projection orifice specifically provided in a cover dedicated to closing an opening which is made, by a drilling operation, in the extension of a routing conduit, makes it possible to implement a more homogeneous projection of cleaning fluid over the total longitudinal dimension of the wiper blade equipped with this connector, advantageously using the cover otherwise necessary to channel the circulation of the cleaning fluid within the connector.
• the arrangement of at least one projection orifice provided in the cover has the advantage of being able to be carried out before assembling the cover with the connector, that is to say before placing the cover in the opening. It is therefore possible to preform covers with a projection orifice, for example by an additive manufacturing operation, or by a laser welding operation which is simpler to implement when the cover is not mounted on the connector, to then assemble the covers having a projection orifice with connectors comprising a distribution node, and more precisely an opening opening towards the outside of the connector.
• the projection means are obtained by means of laser drilling.
• a drilling operation using a laser source can advantageously make it possible to form small diameter orifices with great precision.
• the implementation of such a drilling operation in a distribution zone having a flat surface and a constant thickness makes it possible to form projection means of small dimensions and in a repeatable manner from one projection means to another.
• the at least one distribution zone is of constant thickness. More particularly, the at least one distribution zone has a constant thickness over a longitudinal dimension going from a projection means to a neighboring projection means, the thickness of the distribution zone being measured in a direction parallel to the projection axis of a projection means.
• the at least one distribution zone of constant thickness extends from a longitudinal end of the connector to the cover.
• the wiper blade comprises holes formed on deflection elements or a blade support and through which cleaning fluid is able to be projected onto a glazed surface to be cleaned, the projection means being arranged on the connector so that a spacing distance between two neighboring projection means is substantially equal to an average value of the distances between two neighboring holes of the wiper blade.
• FIG. 1 illustrates a wiping system comprising a drive arm and a wiping blade according to the invention, connected to the arm in particular by a connector and extending mainly in a longitudinal direction;
• FIG. 1 illustrates schematically and in perspective a connector of a wiper blade conforming to that of the , the connector comprising a cover in accordance with the invention, as well as two distribution zones, with eight cleaning fluid projection holes, arranged on either side of a projection orifice formed in the cover;
• FIG. 1 schematically illustrates a sectional view of the connector according to the sectional plane AA illustrated on the , making visible the thickness of at least one distribution zone, of value equal to that of the thickness of the connector at the level of the cover visible on the ;
• FIG. 1 illustrates schematically, in a sectional view similar to that of the , a second alternative embodiment of the connector of the , the connector comprising at least one distribution zone of continuous thickness at the level of which the external face of the at least one distribution zone is not produced by a flat but has a rounded shape.
• the characteristics, variants and different embodiments of the invention can be associated with each other, in various combinations, to the extent that they are not incompatible or exclusive with respect to each other.
• variants of the invention comprising only a selection of characteristics described subsequently in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention. compared to the prior art.
• connection system is arranged between the connection end 3 of the drive arm and the wiper blade 5 to be able to drive the wiper blade in the angular back and forth movement, this connection system comprising an adapter 6 secured to the connection end 3 and a connector 7 secured to the wiper blade 5, the adapter 6 being pivotally mounted on the connector 7.
• the connector 7 of the connection system is fixed on a rigid support 19, which extends over the entire longitudinal dimension of the wiper blade 5 and which in particular carries a wiper blade 8 intended to be in contact with the glass surface.
• the wiper blade has an on-board cleaning fluid supply and projection system, which allows cleaning fluid to be projected onto the glass surface from the wiper blade and therefore in a targeted manner before the passage of the wiper blade on the glass surface.
• the system on board the wiper blade comprises fluid delivery and distribution conduits formed both within the connector 7 and within the deflection elements, as well as projection means, namely holes projection or a projection orifice distributed both on these deflection elements and on the connector.
• the connector comprises within it a distribution node formed by the junction of a routing conduit in a distribution conduit, the distribution node comprising an opening formed in the extension of the routing conduit and opening towards the outside of the connector, the opening being obstructed by a cover pierced with a projection orifice.
• the base 15 extends all along the connector 7, parallel to the axis L, and includes a housing 16 for receiving the wiper blade 5 and more particularly, as illustrated in more detail in , a housing for receiving the rigid blade support 19 intended to support the wiping blade 8.
• the rigid blade support 19 also forms a support for a flexible element 20, known in particular under the term of stiffening vertebra, participating in particular in allow the rigid blade support 19 and the associated wiping blade 8 to be placed on the glass surface.
• the combination of the rigid blade support 19 and the flexible element 20 allows the wiping blade 8 to match the shape of the glazed surface, for example a slightly curved shape, while ensuring the plating of the wiping blade 8 on the glazed surface to allow, during the back and forth movements of the wiping system 1, to remove particles, water and/or dirt from the glazed surface.
• the connector 7 comprises a circuit for conveying a cleaning fluid delimited within the connector 7.
• the routing circuit extends between a fluid inlet and at least one fluid outlet and comprises at least one routing conduit and a distribution conduit.
• the fluid inlet is formed by a supply member 17 intended to be housed in a supply hose of the vehicle. More particularly, the supply hose is a flexible element connected at one end to a reservoir of cleaning fluid of the vehicle, and at one end opposite the supply member 17 of the connector 7, and which can in particular extend the along the drive arm 2, being stapled to it.
• the fluid conveyance circuit within the connector 7 is formed of a first conveyance conduit 21, a second conveyance conduit 22 and a distribution conduit 23.
• the first conveyance conduit 21 extends substantially parallel to the axis L from the supply member 17 to a longitudinally central portion 18 of the connector 7.
• the cleaning fluid is pumped from the vehicle tank and circulates through the supply hose to reach the supply member 17 then the first routing conduit 21.
• the second conveyance conduit 22 extends substantially perpendicular to the first conveyance conduit 21, mainly along a vertical and transverse elongation plane, so as to connect the first conveyance conduit 21 disposed in the low wall 13 to the distribution conduit 23 disposed in the base 15. It is understood that the cleaning fluid coming from the fluid reservoir of the vehicle enters the connector 7 via the supply member 17 and circulates in the first conveying conduit 21 then in the second routing conduit 22 to reach the distribution conduit 23.
• the routing circuit extends between a fluid inlet and at least one fluid outlet.
• the connector 7 comprises two fluid outlets, each of these outlets being formed by a cannula 24 intended to be housed in a projection channel of a deflection element 10.
• the projection channel extends along the element associated deflection 10 and is pierced with a plurality of holes through which the cleaning fluid is able to be projected towards the glass surface of the vehicle.
• the cannulas 24 each form a means of connection between the connector 7 and a deflection element 10 of the wiper blade 5 allowing the circulation of the cleaning fluid from the connector 7 towards the projection channel of a deflection element 10 partner.
• the distribution conduit 23 extends longitudinally from one longitudinal end of the connector 7 to the other. It should be noted that the distribution conduit 23 is delimited longitudinally strictly between the cannulas 24 forming the fluid outlets. In other words, the cannulas 24 forming the fluid outlets of the connector 7 are not part of the distribution conduit 23 and each cannula 24 delimits within it a circulation conduit distinct from the distribution conduit.
• the routing circuit comprises two routing conduits 21, 22, but that without departing from the context of the invention, the routing circuit can comprise a single routing conduit. routing or a greater number of routing conduits since at least one routing conduit, here the second routing conduit 22, opens into the distribution conduit 23 to form a distribution node 40 visible in particular on there .
• an opening 28 is formed on the exterior of the connector 7, in particular by an operation drilling allowing the production of said conveying conduit.
• the opening 28 thus has a dimension, and here a diameter, substantially equal to the corresponding dimension of the conveying conduit which it extends axially, as is visible in Figures 3 and 4.
• the distribution conduit 23 extends more particularly within at least one distribution zone 25 which contributes to forming a lateral part of the base 15 intended to face the glazed surface of the vehicle. More particularly, the at least one distribution zone 25 has an external face 250 intended to face the glazed surface.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Water Supply & Treatment (AREA)
• Nozzles (AREA)
• Cleaning In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=83690360

Family Applications (1)

Country Status (4)

Family Cites Families (4)

• 2022
  • 2022-08-31 FR FR2208731A patent/FR3139086B1/fr active Active
• 2023
  • 2023-08-25 WO PCT/EP2023/073426 patent/WO2024046925A1/fr not_active Ceased
  • 2023-08-25 CN CN202380061112.5A patent/CN119744235A/zh active Pending
  • 2023-08-25 EP EP23761908.5A patent/EP4580916A1/de active Pending

Also Published As

Similar Documents

Legal Events