EP4072909A1 - System zur reinigung eines sensors/senders eines kraftfahrzeugs - Google Patents

System zur reinigung eines sensors/senders eines kraftfahrzeugs

Info

Publication number
EP4072909A1
EP4072909A1 EP20815807.1A EP20815807A EP4072909A1 EP 4072909 A1 EP4072909 A1 EP 4072909A1 EP 20815807 A EP20815807 A EP 20815807A EP 4072909 A1 EP4072909 A1 EP 4072909A1
Authority
EP
European Patent Office
Prior art keywords
fluid
cleaning system
projection
cleaning
guide body
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.)
Pending
Application number
EP20815807.1A
Other languages
English (en)
French (fr)
Inventor
Marcel Trebouet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes dEssuyage SAS
Original Assignee
Valeo Systemes dEssuyage SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Systemes dEssuyage SAS filed Critical Valeo Systemes dEssuyage SAS
Publication of EP4072909A1 publication Critical patent/EP4072909A1/de
Pending legal-status Critical Current

Links

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
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • 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
    • 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
    • B60S1/54—Cleaning windscreens, windows or optical devices using gas, e.g. hot air

Definitions

  • the present invention relates to the field of driving assistance devices and, more particularly, to the field of detection assemblies used for this purpose. .
  • the invention relates more particularly to devices for cleaning a sensor / transmitter of such detection assemblies.
  • Such sensors / transmitters are fitted to an increasing number of motor vehicles in order to help the driver of the vehicle in certain driving situations, for example to provide the driver with a parking aid or a lane departure warning.
  • the data supplied and / or transmitted by the sensor / transmitter must be of the best possible quality, and it is therefore essential to have clean transmission and reception surfaces to carry out the acquisitions. and corresponding data transmissions. This requirement is all the more important in the case of an autonomous vehicle, in which the vehicle is controlled by means of the information collected by such sensors / transmitters.
  • a device for cleaning an emitting and receiving surface of the sensor / emitter for example the lens of a picture-taking camera, or a protective glass of such a lens, in the case of of an optical sensor
  • a cleaning fluid onto said emitting and receiving surface.
  • a stream of air, or of another drying fluid can be projected onto the surface after the cleaning fluid, in order to rid this surface of the cleaning fluid and the dirt that the latter carries with it.
  • cleaning devices therefore include means for transporting and distributing the cleaning fluid and the drying fluid. These cleaning devices must not, however, interfere with the operation of the sensor / transmitter, and they must be as compact as possible to meet the constraints. footprint of the vehicle.
  • a distributor capable of controlling in particular the alternate admission, within an admission and distribution head for cleaning and drying fluids, of one or the other of the cleaning and drying fluids. fluids mentioned above.
  • Such assemblies can also implement telescopic devices configured to pass from a retracted rest position to a deployed cleaning / drying position.
  • telescopic devices configured to pass from a retracted rest position to a deployed cleaning / drying position.
  • the object of the present invention is to provide a device for cleaning a sensor / transmitter for a motor vehicle, the manufacturing and operating costs of which are reduced, which is easy to install at any point of a vehicle, in configurations of complex dimensions, while preserving the efficiency of cleaning and drying of the considered sensor / transmitter.
  • the invention relates to a system for cleaning a sensor / transmitter of a motor vehicle, comprising on the one hand orifices for spraying a first fluid onto the sensor / transmitter and on the other hand projection openings of a second fluid on the sensor / emitter, the second fluid being separate from the first fluid, the cleaning system also comprising a body for guiding the first fluid and the second fluid respectively towards the projection orifices of the first fluid and the projection openings of the second fluid, characterized in that the guide body comprises a first supply part, configured to be connected to a source of the second fluid, and a second distribution part comprising, on the one hand, channels for conveying the second fluid opening onto the projection openings thereof, and, on the other hand, a channel for distributing the first fluid arranged substantially perpendicular to the channels for removal of the second fluid.
  • the projection of fluid on a sensor / emitter consists in particular of the projection of this fluid on a transparent surface arranged opposite the sensor / emitter, and for example an optical surface of a picture-taking camera or else a surface of a transparent material protecting such an optical surface.
  • the first fluid is advantageously a fluid for cleaning a transparent surface, for example a liquid product such as water or a windshield washer fluid.
  • the cleaning fluid can also be gaseous or be in the form of a mixture of gas and liquid.
  • the second fluid is a drying fluid, the role of which is to evacuate from the surface the cleaning fluid in which the dust and dirt present on this surface have been trapped.
  • the drying fluid is advantageously a gas, for example air, the circulation of which is generated by a fan.
  • projection orifice is to be understood here in the broad sense: according to various examples, means for projecting the cleaning fluid can comprise several distinct projection orifices, for example circular, or they can comprise one or more elongated projection orifices. . In all cases, the invention provides that the dimensions of the projection orifices of the first fluid, or cleaning fluid, are reduced to increase the projection pressure of the latter and thus obtain a jet effect adding a mechanical component to the chemical cleaning. achieved through the composition of the cleaning fluid.
  • the orifices for spraying the cleaning fluid are arranged along a distribution channel for this fluid, in a direction which will be designated in the following as the longitudinal direction of the cleaning system according to invention.
  • projection opening should be understood in the broad sense, that is to say that the projection region of the drying fluid may have several distinct projection openings, for example circular, or it may include one or more elongated projection openings.
  • the end of the delivery channels forming the projection openings is located near the projection orifices of the cleaning fluid: this region will be, in what follows, designated as the projection region of the cleaning system according to the invention. .
  • the cleaning fluid and the cleaning fluid drying are guided to the projection region by a guide body which comprises in particular a first part configured to be connected to a source of the second fluid, that is to say, here, to the fan which generates the flow of air drying.
  • the guide body also comprises a second distribution part, attached to the first supply part of the guide body.
  • this second distribution part comprises, on the one hand, channels for conveying the drying fluid to the spray openings of this drying fluid and, on the other hand, the fluid distribution channel. cleaning fluid in which the orifices for spraying the cleaning fluid are formed, said distribution channel being arranged substantially perpendicular to the channels for conveying the drying fluid.
  • the projection region extends at one end of the second distribution part of the opposite guide body, according to the direction of circulation of the drying fluid in the second distribution part, at the end through which the latter is attached to the first feed portion of the guide body.
  • the second distribution part of the guide body extends between the projection region and one end of the first supply part of the opposite guide body, according to the direction of circulation of the drying fluid, at the end. by which this first supply portion of the guide body is connected to the source of drying fluid.
  • the main direction of circulation of the drying fluid in the second distribution part of the guide body substantially perpendicular to this longitudinal direction, will be designated in the following as direction vertical cleaning system according to the invention.
  • This direction is also the main direction of elongation of the channels for conveying the drying fluid in the second distribution part of the guide body of the cleaning system according to the invention.
  • a wall of the distribution of the first fluid participates in delimiting the channels for conveying the second fluid, that is to say of the drying fluid, in the projection region.
  • the cleaning fluid projection orifices and the drying fluid projection openings comprise, in the projection region, a common wall.
  • this common wall is arranged between the orifices for spraying the cleaning fluid and the spraying openings for the drying fluid, that is to say it is located in the vicinity, respectively, of the distribution channel. cleaning fluid and the ends of the drying fluid delivery channels.
  • the drying fluid projection openings are located on the side of the cleaning system according to the invention towards which the cleaning fluid projection orifices are oriented.
  • the drying fluid projection openings are located between the cleaning fluid projection orifices and the surface to be cleaned, the cleaning fluid projection orifices being logically directed towards the latter.
  • the projection of drying fluid therefore takes place between the surface to be cleaned and the projection of cleaning fluid, which makes it possible to increase the compactness of the cleaning system while preserving the efficiency of the assembly, the projection of the cleaning fluid. drying thus being carried out as close as possible to the surface to be cleaned and allowing complete evacuation of the cleaning fluid laden with dirt and dust.
  • the invention may also exhibit one or more of the following characteristics, taken separately or in combination:
  • the second distribution part of the guide body has a dimension, measured along the longitudinal direction of the cleaning system, different between a junction edge with the first part of supply of the guide body and an edge comprising the projection openings of the second fluid, that is to say of the drying fluid.
  • the second part of distribution is such that, on the one hand, it can prolong without sudden increase of the passage section the first supply part, which has small dimensions to facilitate its installation in a small footprint, and such that, on the other hand, it allows to achieve a projection region whose longitudinal dimension, along of which are arranged the projection orifices of the first fluid and the projection openings of the second fluid, is important, and therefore allows the cleaning / drying of a large surface or the cleaning / drying of a plurality of surfaces of different sensors / transmitters located in the vicinity of each other.
  • the projection openings of the second fluid are regularly distributed along a direction of elongation of the second distribution part, substantially parallel to a longitudinal direction of the cleaning system. This makes it possible to increase the homogeneity of the distribution of the second fluid in the projection region of the cleaning system according to the invention.
  • the cleaning system according to the invention comprises a base configured to be integral with a structure of the vehicle, and a shell configured to cover the base. It is appropriate here to clearly distinguish the base and the shell of the first supply part and of the second distribution part of the guide body.
  • the base and the shell together form the entire guide body.
  • the first supply portion of the guide body consists of a first portion of the shell
  • the second distribution portion of the guide body consists of the covered base and a second portion of the shell.
  • the base and the shell can together form the first supply part and the second distribution part of the guide body of the cleaning system according to the invention.
  • the base comprises means for fixing to a structure of the vehicle, for example a bodywork element or for protecting the latter, such as a bumper.
  • the base is advantageously in the general form of a thin plate, the shape of which is complementary to that of the structural element of the vehicle, the base of which is intended to be made integral. This notably allows the base to be put in place without modifying the general appearance of the vehicle.
  • the base is made from material with a structural element of the vehicle as mentioned above.
  • the shell advantageously comprises several walls which together delimit a cavity, the base of which constitutes a closing wall when the base and the shell are assembled to form the guide body of the cleaning system according to the invention.
  • the shell comprises a first portion configured to be connected to the source of the second fluid and a second portion configured to form, with the base, the second distribution portion of the guide body, the first portion and the second portion forming between them a non-zero angle.
  • the first portion of the shell forms a non-zero angle with the plane defined by the longitudinal direction and the vertical direction of the cleaning system according to the invention.
  • the first portion of the shell extends in a general direction substantially perpendicular to the second portion of the shell and to the second distribution portion of the guide body: this direction will be, in what follows, designated as direction transverse of the cleaning system according to the invention.
  • Such a configuration allows, in particular, the implantation of the source of drying fluid, to which the first portion of the shell is connected, in a region close to the sensor / transmitter equipped with the cleaning system according to the invention, but not visible. by a user looking at such a sensor / transmitter.
  • Such a configuration therefore facilitates the installation of the cleaning system according to the invention in an environment such as, for example, that of a side of the vehicle.
  • the channels for conveying the second fluid are delimited by ribs protruding from an outer surface of the base and an inner surface of the shell intended to be in contact with the free end of the ribs.
  • the interior designates a region located, in the transverse direction, on the side of the surface to be cleaned
  • the exterior designates a region located, in the transverse direction, opposite the surface to be cleaned.
  • the ribs protruding, in the transverse direction of the cleaning system, from the outer surface of the base form a plurality of transverse partitions which extend within the cavity defined by the walls of the shell.
  • the dimensions, in the transverse direction, of these partitions are defined in such a way that, when the shell is placed over the base to form the second distribution part of the guide body, an interior surface of the cavity defined by the walls of the shell is placed in support of the thickness of each of these partitions, thus forming the delivery channels in which the drying fluid circulates.
  • the interior surface of the cavity delimited by the walls of the shell is smooth. More precisely, this surface can be polished for better sealing of each channel for conveying the drying fluid.
  • the ribs define, in the second distribution part of the guide body, conveyor channels inclined with respect to the longitudinal direction and the vertical direction of the cleaning system. More precisely, a rib participates in delimiting two adjacent drying fluid delivery channels, that is to say that it is common to these two delivery channels. In addition, all the delivery channels are gathered in the first supply part of the guide body, connected to the source of drying fluid.
  • the complex and inclined shape of these ribs results from the configuration of the second distribution part of the guide body of the cleaning system, and, more particularly, from the increase in the longitudinal dimension of this second distribution part from the first part. up to the projection openings.
  • each projection opening of the second fluid is delimited, in the longitudinal direction of the cleaning system according to the invention, by the free ends of two ribs participating in delimiting the corresponding delivery channel.
  • each projection opening of the drying fluid is formed at the end of the corresponding delivery channel opposite the end through which this delivery channel originates in the first supply part of the body. guidance.
  • each drying fluid projection opening are smaller than the average dimensions of the delivery channel of which this projection opening forms a end, measured in section along a plane perpendicular to the main direction of elongation of the conveyance channel considered. This makes it possible to increase the projection pressure of the drying fluid and to obtain a jet effect which reinforces the efficiency of the drying carried out.
  • the shell has a groove for receiving a distribution pipe for the first fluid in which a plurality of orifices for spraying the first fluid are arranged.
  • This groove forms, with the distribution pipe, the distribution channel for the first fluid.
  • the distribution pipe is forcibly inserted into the groove, and it is locked there in rotation so that the orientation of the cleaning fluid projection orifices with respect to the surface to be cleaned remains constant.
  • the rotation locking of the distribution pipe can be achieved by engaging a lug arranged in the groove in a hollow formed on the surface of the distribution pipe.
  • the shell comprises a distribution channel for the first fluid, of closed section and in which is arranged a plurality of projection orifices of the first fluid.
  • FIG 1 is a general schematic perspective view of a headlight of a motor vehicle equipped with an exemplary embodiment of a cleaning system according to the invention
  • FIG 2 is a schematic perspective view of a cleaning system such as that illustrated in Figure 1,
  • FIG 3 is a schematic perspective view of an embodiment of the base of a cleaning system such as that illustrated in figure 2,
  • FIG 4 is a schematic perspective view of an exemplary embodiment of a shell configured to cover a base such as that illustrated in Figure 3 in order to form a cleaning system such as that illustrated in Figure 2,
  • FIG 5 is a schematic perspective view of a detail of a projection region of a cleaning system such as that illustrated in Figure 2, and
  • FIG. 5 is a top view of the detail shown in Figure 5.
  • FIG. 1 schematically illustrates an exemplary embodiment of a cleaning system 100 according to the invention in its application to the cleaning of a surface 250 of a sensor / emitter 200 intended to equip a headlight 300 of a motor vehicle.
  • the sensor / emitter 200 will be described in more detail as being an optical detection device such as those known by the English acronym LIDAR (Laser / Light Detection and Ranging) configured to emit a light or laser beam. and to analyze the light or laser beam returned by an obstacle located in the vicinity of the sensor / emitter 200.
  • LIDAR Laser / Light Detection and Ranging
  • Such a sensor / emitter 200 comprises an optical surface 250 whose state of cleanliness conditions the quality of the detection carried out.
  • the surface 250 can be an emitting / detecting surface of the sensor / emitter 200, or a transparent pane for protecting such an emitting / detecting surface. It should be noted that what follows can be applied regardless of the type of sensor / transmitter chosen and the type of associated detection system.
  • the cleaning system 100 is attached to a structural element 400 of the vehicle, in the vicinity of the projector 300 and the sensor / transmitter 200. More specifically, as shown in Figure 1, the cleaning system 100 substantially conforms to the shape of the structural element 400 in the region in which it is installed, such that it does not significantly alter the aesthetics of the projector 300 and of the structural member 400 in the region in which it is installed.
  • a cover can be attached to the structural element 400 and to the cleaning system 100 in order to hide the latter from a user looking at the projector 300.
  • the particular shape of the cleaning system 100 also allows the installation of a fan 500 forming part of the cleaning system as will be described in more detail below, in a region of the projector 300 which is hardly visible to a user. looking at the projector 300, while being close to the projection region 110.
  • the cleaning system 100 is configured to project, on the surface to be cleaned 250, on the one hand, a first fluid, or cleaning fluid, intended to remove from the surface to be cleaned 250 the dust and dirt which may be there. deposited, and, on the other hand, a second fluid, or drying fluid, chosen to allow rapid evacuation of the cleaning fluid, loaded with impurities and dirt, from the surface to be cleaned 250, without leaving traces on the latter .
  • the cleaning fluid is, for example, a liquid such as water or windshield washer fluid.
  • the drying fluid is air circulated by the fan 500 schematically mentioned in FIG. 1.
  • the cleaning fluid and the drying fluid are projected onto the surface to be cleaned 250 from a projection region 110 of the cleaning system 100 which will be detailed later, with reference to the following figures.
  • FIG. 2 is a schematic perspective view of a cleaning system 100 according to the invention such as that illustrated in FIG. 1.
  • the surface to be cleaned 250 is schematically indicated in dotted lines in this figure.
  • the cleaning system 100 comprises a first supply part 10, configured to be connected to the ventilator 500, and a second distribution part 11, which comprises, at its end opposite to the first supply part 10, the projection region. 110.
  • the first part 10 and the second part 11 extend continuously to form together a guide body 1 of the cleaning system 100.
  • the first part supply io of the guide body 1 is connected to the fan 500 at one end according to its main direction of elongation and it is connected, at its opposite end in this main direction of elongation, to the second distribution part 11 of the body guide 1.
  • the direction of elongation of the second distribution part 11 in which it extends mainly between its junction with the first feed part 10 and the projection region 110 will be designated in the following.
  • the term “lower” will refer, in what follows, to the end of the second distribution part 11, in the vertical direction V, by which the latter is attached to the first supply part 10 and the term “upper” will refer, in what follows, to the end of the second distribution part 11, in the vertical direction V, in which is located the projection region 110.
  • the second part 11 of the guide body 1 comprises, on the one hand, projection openings 12 for the drying fluid and, on the other hand, a pipe 13 for distributing the cleaning fluid.
  • the pipe 13 for distributing the cleaning fluid is advantageously pierced with a plurality of spraying orifices 130 for the cleaning fluid, not shown in FIG. 2. According to one example, the spraying orifices 130 for the cleaning fluid are regularly distributed. along the distribution pipe 13.
  • the pipe 13 for distributing the cleaning fluid is inserted into a substantially cylindrical groove 14 arranged at the upper vertical end of the second distribution part 11 of the guide body 1. More precisely, according to this example, the groove 14 is arranged in a substantially cylindrical shape 140 which comprises a slot 141 of axial extension, that is to say parallel to the axis of elongation of the substantially cylindrical shape, which releases a portion of the pipe 13 for distributing the cleaning fluid.
  • the distribution pipe 13, the groove 14 and the substantially cylindrical shape 140, coaxial, together form a distribution channel for the cleaning fluid.
  • the pipe 13 for distributing the cleaning fluid is inserted into the groove 14 such that the part of this distribution pipe in which the projection orifices 130 of the cleaning fluid, not shown in FIG. 2, are arranged. found next to the slit 141, in order to allow the projection of the cleaning fluid on the surface to be cleaned 250.
  • the main direction of extension of the groove 14, of the substantially cylindrical shape 140 and of the cleaning fluid distribution pipe 13 will be designated in the following as the longitudinal direction L of the cleaning system 100 according to the invention. It should be noted that this direction can have any orientation with respect to the longitudinal direction of a vehicle equipped with the cleaning system 100 according to the invention, and that it is substantially perpendicular to the vertical direction V.
  • the second distribution part 11 of the guide body 1 therefore extends mainly in the longitudinal direction L and the vertical direction V.
  • the notions of plane or direction are here, as well. as in what precedes and in what follows, to be understood in the broad sense.
  • the shapes of the elements that constitute the cleaning system 100 are defined to match as closely as possible the shapes of the vehicle in the region in which the cleaning system 100 is installed, in order to allow implantation of the latter which does not adversely affect the aesthetics of the vehicle in this region.
  • the notion of "plane” in which all or part of an element of the cleaning system 100 extends is therefore here, as well as in what precedes and in what follows, to be understood as that of the plane closest to the surface of the element considered.
  • the notion of "direction" in which all or part of an element of the cleaning system 100 extends is therefore here, as well as in the foregoing and in what follows, to be understood as that of the direction linear closest to the direction of extension of the element considered.
  • the first supply part 10 of the guide body 1 forms, with the second distribution part 11, a non-zero angle 160.
  • the first supply part 10 of the guide body forms, with the second distribution part 11 thereof, an angle 160 close to 90 degrees.
  • the main direction of elongation of the first feed portion 10 of the guide body 1 substantially perpendicular to the longitudinal direction L and to the direction vertical V, will be designated in the following as the transverse direction T of the cleaning system 100. It should be noted that such a configuration allows a remote location of the fan 500 forming the source of drying fluid with respect to the projection region 110. of this drying fluid. This makes it possible to facilitate the installation of the cleaning system 100 on the vehicle.
  • the term “interior” will denote, in what follows, the side of the cleaning system 100 closest, in the transverse direction T, to the end of the first supply part 10 by which the latter is connected to the fan 500.
  • the term “external” will denote, in what follows, the side of the cleaning system located opposite, in the transverse direction T, from the end of the first supply part 10 by which the latter is connected to the fan 500.
  • the term “interior” will refer to an element of the cleaning system 100 located, in the transverse direction T, on the side of the surface to be cleaned 250
  • the term “ exterior” will refer to an element of the cleaning system 100 located opposite the surface to be cleaned 250 in the transverse direction T of the cleaning system 100.
  • the first supply portion 10 of the guide body 1 substantially forms a hollow duct configured to convey the drying fluid circulated by the fan 500 to the second distribution portion 11 of the guide body 1, the two parts of the guide body communicating to allow passage of the drying fluid from the first part to the second part.
  • the drying fluid is conveyed, in the second distribution part 11 of the guide body 1, in a plurality of delivery channels 15, not visible in FIG. 2, each of which forms, at its end located in the projection region 110, one of the projection apertures 12.
  • Each routing channel 15 therefore follows, between the projection opening 12 located at one of its ends and the end of the second distribution part 11 via which the latter is attached to the first supply part 10, a path complex by which they extend, from the upper end to the lower end of the second distribution part 11 of the guide body 1, being on the one hand substantially perpendicular to the pipe 13 for distributing the cleaning fluid and to the distribution channel that the latter forms with the groove 14 and the substantially cylindrical shape 140 and on the other hand inclined with respect to the vertical direction V of the cleaning system 100, as is more clearly visible in FIG. 3 illustrating a basis of the second part participating in delimiting these routing channels 15.
  • the complex paths of the channels 15 for conveying the drying fluid are defined such that the projection openings 12 for this fluid, which form, in the projection region 110, the ends of the conveying channels 15, are substantially regularly distributed along the dimension, in the longitudinal direction L of the cleaning system 100, of the projection region 110.
  • the guide body 1 comprises a base 2 and a shell 3 which, placed to cover the base 2 in the transverse direction T of the cleaning system 100, forms with said base 2, the second distribution part 11 of the guide body 1.
  • the base 2 forms the inner side of the second distribution part 11 of the guide body 1.
  • the shell 3 forms on the one hand the first supply part 10 of the guide body, and on the other hand it covers the base 2 to form with it the second distribution part 11 of the guide body. More precisely, the base 2 and the shell 3 form, in the second distribution part 11 of the body of guide, a cavity in which the channels 15 for conveying the drying fluid are arranged, as will now be detailed with reference to the figures
  • FIG. 3 illustrates an exemplary embodiment of the base 2 of the cleaning system 100 represented by FIG. 2.
  • the base 2 comprises a plate 20 of complex shape, which here has the general shape of an L, a vertical base of which here participates in forming the lower part of the second distribution part 11 of the guide body 1 and of which an extension here longitudinal participates in forming the upper end of the second distribution part 11 of the guide body 1 and the projection region 110.
  • the base 2 comprises fixing means 21 on a structural element of the vehicle such as the structural element 400 previously mentioned, not shown in FIG. 3.
  • the fixing means 21 comprise two tabs 210 each of which extends, in the longitudinal direction L of the cleaning system 100, a longitudinal end of the plate 20 in the upper region of the latter.
  • each tab 210 comprises an orifice 211 for inserting, for example, a screw or a rivet not shown in FIG. 3, allowing the base 2 to be fixed on the structural element 400.
  • the base 2 comprises, extending substantially perpendicularly to the plate 20 from an outer surface 205 thereof, a plurality of ribs 22 of complex shape. More precisely, with reference to the directions and orientations defined above, the ribs 22 extend projecting from the outer surface 205 of the plate 20, that is to say projecting from the surface of the plate 20 situated, according to the transverse direction T of the cleaning system 100, away from the surface by which the plate 20 is made integral with the vehicle.
  • each rib 22 has, in the longitudinal direction L and in the vertical direction V of the cleaning system 100, a complex shape, inclined both with respect to the longitudinal direction L and with respect to the direction vertical V of the cleaning system 100, so as to follow the increase in the longitudinal dimension of the second distribution part of the guide body.
  • the invention provides in besides that the ribs 22 all have the same dimension in the transverse direction T of the cleaning system 100.
  • the ribs 22 participate in delimiting the channels 15 for conveying the drying fluid within the second distribution part 11 of the guide body 1. More precisely, in the base 2, two ribs 22a, 22b, consecutively arranged in the longitudinal direction L of the cleaning system 100 together delimit a circulation path 150 of the drying fluid in the base 2. According to the invention, the shell 3 is configured such that, when it covers the base 2 , it closes the traffic paths 150 by forming the delivery channels 15.
  • Figure 4 illustrates, in perspective, the shell 3 of the guide body 1 seen from the side through which it covers the base 2, that is to say, in other words and with reference to the directions and orientations previously defined, seen from the inside of the shell 3.
  • the shell 3 comprises a first portion 30 configured to form the first supply portion 10 of the guide body 1, not shown in Figure 4, and a second portion 31 configured to cover the base 2 illustrated by figure 3.
  • the first portion 30 forms the lower end of the shell 3 along the vertical direction V of the cleaning system 100
  • the second portion 31 forms the upper end of the shell 3.
  • the first portion 30 of the shell 3 forms a hollow channel, the main direction of elongation of which is parallel to the transverse direction T of the cleaning system 100, and one end of which, according to the transverse direction T, is configured to receive the fan 500, not shown in FIG. 4.
  • the first portion 30 of the shell 3 is attached to a lower end of the second portion 31 of the shell 3, intended to cover the base 2, the first portion 30 and the second portion 31 being able to communicate to allow passage of the drying fluid.
  • the first portion 30 has a closed section which makes it possible to ensure by itself the guiding of the flow of drying fluid in the direction of the second portion and the second portion 31 have an open section which is able to be pressed against the base 2 in order to form together guide channels for the drying fluid.
  • the shell 3 comprises a bottom wall 310 and side walls 311 which extend substantially perpendicular to the bottom wall 310, from the longitudinal end edges thereof.
  • the bottom wall 310 and the side walls 311 together define an open cavity 315.
  • the second portion 31 of the shell 3 comprises fixing lugs 32 configured to form, in combination with the fixing lugs 21 of the base 2 , means for fixing the cleaning system 100 on the vehicle.
  • the fixing lugs 32 extend, in the longitudinal direction L of the cleaning system 100, on either side of the side walls 311, and they each comprise an orifice 320 configured for receive a fixing element such as a screw or a rivet intended also to pass through an orifice 211 of the base 2 in order to allow the fixing of the cleaning system 100 on a structural element 400 of the vehicle.
  • the bottom wall 310 of the shell 3 is attached to the substantially cylindrical shape 140 previously described in which is inserted, according to the example more particularly illustrated by the figures, the cleaning fluid distribution pipe 13. More precisely, the substantially cylindrical shape 140, the main direction of elongation of which is substantially parallel to the longitudinal direction L of the cleaning system 100, is arranged such that a part 142 of its wall delimits the open cavity 315 with the bottom wall 310 and the side walls 311. Still more precisely, and as shown in FIG. 4, the part 142 of the substantially cylindrical shape 140 is attached, in the longitudinal direction L of the cleaning system 100, to the bottom wall 310, and it is delimited, at its upper end in the vertical direction V of the cleaning system 100, by the slot 141.
  • This part 142 of the substantially cylindrical shape 140 thus forms a longitudinal upper wall of the shell 3 and of the cavity 315.
  • the shapes and dimensions of the side walls 311 and of the upper curved wall 142 are defined complementary to the shapes and dimensions of the base 2, such that, when the shell 3 is placed to cover the base 2, the base 2 closes the cavity 315. More precisely, the invention provides that a dimension, in the transverse direction T of the cleaning system 100, of the side walls 311, is substantially equal to a dimension, in the transverse direction T, of the ribs 22 of the base 2.
  • the inner surface 3100 of the bottom wall 310 which is placed in abutment with the ends of the ribs 22 when the shell 3 is placed to cover the base 2, is smooth, in order to guarantee a tight closure of the delivery channels. 15 and to avoid any leakage of drying fluid between delivery channels 15.
  • the interior surface 3100 is polished.
  • the invention provides that, when the shell 3 is placed to cover the base 2 to form the second distribution part 11 of the guide body 1 of the cleaning system 100, the curved upper wall 142 is positioned opposite the upper free ends 220, in the vertical direction V of the cleaning system 100, of each of the ribs 22.
  • the inclination of this curved upper wall 142 then contributes to reducing the passage section for the drying fluid at each of the openings projection 12.
  • the upper free ends 220, in the vertical direction V, the ribs 22 extend so as to be flush with the upper end edge of the base 2 and to be positioned at the junction between the upper wall curved 142 and the bottom wall 310 of the shell.
  • each projection opening 12 is defined by the base and the ribs and by the bottom wall, where appropriate the side walls, of the shell, and the curved upper wall 142 extends opposite each of the projection openings to limit the passage section of the drying fluid.
  • the curved upper wall 142 which participates, on the one hand, in delimiting the groove 14, and which participates, on the other hand, in hindering the projection openings 12 to guide the drying fluid supplied. to exit through these openings, forms a common wall to the means for projecting the two fluids.
  • FIG. 5 shows, in close-up view, a detail of the projection region 110 of the cleaning system 100 placed in the vicinity of a sensor / emitter 200 in order to clean a surface 250 thereof.
  • FIG. 5 is the base 2 and the shell 3, as well as, according to the embodiment illustrated here, the cleaning fluid distribution pipe 13 inserted in the groove 14.
  • the curved top wall 142 hinders the exit of the drying fluid at the projection openings 12, in that the top wall 142 achieves a reduction in the section of passage of this fluid at the level of the projection openings 12. It should be noted that the reduction of the passage section at the level of the projection openings 12 with regard to the average passage section of the delivery channels 15 makes it possible to increase the flow rate. speed of the drying fluid at the outlet of the cleaning system and achieve a jet effect to improve the efficiency of drying.
  • the curved top wall 142 extends substantially perpendicular to the direction of main elongation of the delivery channels 15 so that the same curved top wall makes it possible to reduce the passage section of the assembly. projection openings 12.
  • FIG. 5 are also evoked schematically, on the one hand, a jet 135 for spraying cleaning fluid through a projection orifice 130, and, on the other hand hand, a jet 155 for spraying drying fluid through a projection opening 12. It results from the particular arrangement of the projection orifices 130 for the cleaning fluid and the projection openings 12 for the drying fluid that, when the drying system cleaning 100 is installed in the vicinity of a surface to be cleaned 250, the projection of drying fluid is carried out, thanks to the cleaning system according to the invention, between the surface to be cleaned 250 and the orifices 130 for spraying the cleaning fluid.
  • the drying fluid here air
  • the drying fluid is therefore projected as close as possible to the surface to be cleaned 250, which allows rapid and efficient drying of the latter, with reduced air loss between the projection openings 12 and the surface to be cleaned 250.
  • This last point allows, in particular, in the context of the example illustrated here in which the drying fluid is an air flow generated by the fan 500, a more accurate dimensioning of the fan 500 as a function of the only drying air flow needs.
  • Figure 6 is a top view of the detail shown in Figure 5.
  • Figure 6 shows the sensor / transmitter 200 and its surface to be cleaned 250, as well as the cleaning system 100, its base 2 and its shell 3.
  • the fan 500 is also mentioned schematically in this figure.
  • FIG. 6 are also shown the orifices 130 for spraying the cleaning fluid, as well as the spraying openings 12 for the drying fluid delimited by the ribs 22 of the base 2 and by the curved upper wall 142 of the shell 3.
  • FIG. 6 also shows the path 156 of the drying fluid coming from all of the conveying channels 15 of the latter.
  • FIG. 6 it results from the particular configuration of the conveying channels 15, and, in particular, from the inclined shape of the ribs 22 in the longitudinal direction L of the cleaning system 100, that the flow of drying fluid, here, air, indeed reaches the entire surface to be cleaned 250, and this, although the source of drying fluid, here the fan 500, is offset, in the longitudinal direction L, relative to the projection openings 12 of said drying fluid.
  • the invention therefore achieves the aims which it had set itself, by proposing a simple system for cleaning and drying a surface of a sensor / emitter of. a motor vehicle.
  • the invention allows, in furthermore, easy installation of such a cleaning system in a reduced environment, and respecting the aesthetics of the vehicle in the vicinity of the sensor / transmitter and of the cleaning system.
  • the invention as it has just been described cannot, however, be limited to the means and configurations exclusively described and illustrated, and also applies to any means or configurations, equivalents and to any combination of such means or configurations.
  • the invention applies in an alternative case in which the projection orifices 130 of the fluid cleaning are arranged in the substantially cylindrical shape 140, the latter then not comprising the slot 141.
  • the distribution channel for the cleaning fluid is a substantially cylindrical distribution duct 135 pierced with projection orifices 130, arranged at the upper end, in the vertical direction V of the cleaning system 100, of the shell 3
  • the invention also applies to the case, not shown by the figures, in which the base 2 of the cleaning system 100 is made from one material with the structural element 400 of the vehicle on which the cleaning system 100 is. fixed.
  • the ribs 22, which participate in delimiting the conveying channels 15 of the drying fluid, are arranged projecting from the structural element 400, and the shell 3 is attached to the latter, for example by means fixing 32, 320 such as those previously described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Nozzles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP20815807.1A 2019-12-10 2020-11-30 System zur reinigung eines sensors/senders eines kraftfahrzeugs Pending EP4072909A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1914098A FR3104039B1 (fr) 2019-12-10 2019-12-10 système de nettoyage d'un capteur/émetteur d'un véhicule automobile
PCT/EP2020/083986 WO2021115830A1 (fr) 2019-12-10 2020-11-30 Système de nettoyage d'un capteur/émetteur d'un véhicule automobile

Publications (1)

Publication Number Publication Date
EP4072909A1 true EP4072909A1 (de) 2022-10-19

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US (1) US20230126082A1 (de)
EP (1) EP4072909A1 (de)
JP (1) JP7536870B2 (de)
KR (1) KR20220108119A (de)
CN (1) CN115003569A (de)
FR (1) FR3104039B1 (de)
WO (1) WO2021115830A1 (de)

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DE102021210085A1 (de) * 2021-09-13 2023-03-16 Continental Automotive Technologies GmbH Kombinierte Reinigungsvorrichtung für eine Sensorvorrichtung eines Fahrzeugs
EP4286226A1 (de) * 2022-06-01 2023-12-06 ZKW Group GmbH Luftreinigungsvorrichtung
FR3137349B1 (fr) * 2022-06-30 2024-07-12 Valeo Systemes Dessuyage Dispositif de nettoyage d’une surface optique
FR3146856A1 (fr) * 2023-03-20 2024-09-27 Valeo Systèmes D’Essuyage Buse d’éjection d’air pour dispositif de nettoyage d’un dispositif de détection pour véhicule
FR3147763A1 (fr) * 2023-04-17 2024-10-18 Valeo Systèmes D’Essuyage Dispositif de nettoyage pour surface d’un dispositif de détection, procédé de fabrication d’un tel dispositif de nettoyage

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JP6035200B2 (ja) 2012-05-21 2016-11-30 アスモ株式会社 車載カメラ用ウォッシャノズル
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Publication number Publication date
FR3104039A1 (fr) 2021-06-11
JP2023505837A (ja) 2023-02-13
CN115003569A (zh) 2022-09-02
JP7536870B2 (ja) 2024-08-20
US20230126082A1 (en) 2023-04-27
WO2021115830A1 (fr) 2021-06-17
FR3104039B1 (fr) 2022-04-15
KR20220108119A (ko) 2022-08-02

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