WO2024061850A1 - Spray nozzle of a spraying device - Google Patents

Spray nozzle of a spraying device Download PDF

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Publication number
WO2024061850A1
WO2024061850A1 PCT/EP2023/075693 EP2023075693W WO2024061850A1 WO 2024061850 A1 WO2024061850 A1 WO 2024061850A1 EP 2023075693 W EP2023075693 W EP 2023075693W WO 2024061850 A1 WO2024061850 A1 WO 2024061850A1
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WO
WIPO (PCT)
Prior art keywords
projection
nozzle
cleaning fluid
main body
projection nozzle
Prior art date
Application number
PCT/EP2023/075693
Other languages
French (fr)
Inventor
Benjamin Chabannes
Cyrille GIRODOT
Loic Roussel
Philippe Picot
Sebastien Rollet
Yoann DOLLE
Original Assignee
Valeo Systèmes d'Essuyage
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 Systèmes d'Essuyage filed Critical Valeo Systèmes d'Essuyage
Publication of WO2024061850A1 publication Critical patent/WO2024061850A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
    • 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
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens

Definitions

  • the present invention relates to the field of cleaning systems for vehicle detection devices, and more particularly relates to a cleaning device projecting cleaning liquid onto a detection surface of a detection device.
  • detection devices such as autonomous driving systems.
  • the latter include a plurality of detection devices such as cameras, radars, LIDARs (English acronym for “ light detection and ranging ”) or even infrared wave sensors, for example.
  • detection devices generally comprise a detection surface through which the waves emitted by said detection device are emitted towards the external environment of the vehicle on which the autonomous driving system is installed and through which waves pass back from the vehicle. external environment.
  • This detection surface is generally optically neutral and must be clean so as not to disturb the signals emitted or received by the detection device.
  • Systems for cleaning detection devices generally comprise at least one device for projecting a cleaning fluid installed on the detection device and capable of projecting cleaning fluid against the detection surface thereof.
  • the cleaning system may comprise, alternatively or in a complementary manner, a circuit capable of guiding a flow of air towards the detection surface.
  • the cleaning fluid projection device is placed near the detection surface of one of the detection devices in order to optimize the cleaning of said detection surface.
  • projection devices comprise at least two elements: a main body and a projection nozzle.
  • the projection nozzle and the main body generally help to delimit a channel through which the cleaning fluid circulates towards an outlet orifice.
  • the main body further includes a baffle guiding the cleaning fluid against the detection surface. More particularly, the cleaning fluid is projected from the outlet orifice of the channel against the deflector so as to generate a flat jet of cleaning fluid towards the detection surface.
  • the projection of the cleaning fluid at high pressure against the deflector can cause said deflector to move relative to its initial position and cause a separation between the main body and the projection nozzle, such that cleaning fluid can infiltrate into this spacing as the projection device is used, in particular by capillarity.
  • the cleaning fluid thus infiltrated may cause degradation of the main body and/or the projection nozzle, and more particularly, degradation of the attachment between the main body and the projection nozzle.
  • the present invention proposes an alternative solution to what currently exists by proposing a projection nozzle, forming part of a cleaning fluid projection device, which makes it possible to repeatedly and reliably project a jet onto the surface to be cleaned in accordance with this which is theoretically calculated, while also avoiding infiltration of cleaning fluid at a welding zone between the main body and said projection nozzle.
  • the main object of the present invention is a projection nozzle of a device for projecting a cleaning fluid, the projection nozzle being intended to be fixed to a main body of the projection device delimiting at least in part a conduit for conveying the cleaning fluid, characterized in that the projection nozzle comprises at least one channel configured to guide the circulation of the cleaning fluid towards a projection outlet of the cleaning fluid, the projection nozzle further comprising a wall forming a deflector arranged opposite the projection outlet of the channel, the projection nozzle being formed in one piece.
  • the deflector and the channel thus constitute the same part, the projection nozzle.
  • the projection nozzle is formed by a one-piece element, that is to say that the separation of one of the constituent elements of the projection nozzle from the other elements would result in the destruction of one or the other of the constituent elements of said projection nozzle.
  • the projection nozzle further comprises a fixing system configured to secure the projection nozzle to the main body of the projection device.
  • the channel extends along a main direction of extension by presenting an inlet orifice and an outlet orifice, the deflector comprising a wall having a projection face facing the outlet orifice of the channel, the projection face extending mainly in a plane secant to the direction of main extension of the channel.
  • the face from which the channel opens extends in a plane intersecting the plane in which a face of the deflector is located onto which the cleaning fluid is projected. This inclination of the face from which the channel opens opens the projection angle of the cleaning fluid projected from the deflector.
  • the projection nozzle comprises at least one synthetic material, the projection nozzle being produced by injection of material.
  • the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC, or ABS.
  • the projection nozzle comprises several channels arranged next to each other along a direction secant to their main extension direction, the channels each comprising an outlet orifice, the deflector extending opposite each of the outlet orifices of the channels.
  • the deflector comprises a single wall extending opposite each of the outlet orifices of the channels.
  • the deflector comprises several walls, each of the walls being arranged opposite one of the outlet orifices of the channels. This particular configuration makes it possible to generate different projection jets according to at least two different projection angles.
  • the projection nozzle has an internal face configured to face the main body and an opposite external face onto which opens a projection zone of the cleaning fluid, the fixing system being arranged on the internal side.
  • the projection zone is delimited by the deflector and by an inclined plane into which the outlet orifice of the channel opens facing the deflector.
  • the projection nozzle extends along a direction of main elongation by presenting a projection end where at least the deflector and the outlet orifice of the channel are arranged and a opposite connecting end, the projection nozzle comprising a snap-fastening element constituting the fixing system and disposed at the connecting end.
  • the present invention also relates to a device for projecting a system for distributing a cleaning fluid, the projection device comprising a main body participating in delimiting a conduit for conveying the cleaning fluid and a projection nozzle characterized according to any of the preceding characteristics, the channel communicating fluidly with the conveying conduit.
  • the projection device comprises a reservoir of the cleaning fluid disposed between the conveying conduit and the channel of the projection nozzle, the projection nozzle participating at least in part in delimiting the reservoir.
  • the reservoir is delimited both by the main body and by the projection nozzle.
  • the main body comprises a housing for the projection nozzle, the deflector having an internal surface facing the outlet orifice of the channel and an external surface facing a wall of the body main participant in demarcating the accommodation.
  • the projection of the cleaning fluid from the channel against the deflector can cause the deflector to move relative to its initial position, but by pushing it towards a wall of the main body participating in delimiting the housing.
  • the projection of the cleaning fluid then has the effect of reducing a possible gap between the projection nozzle and the main body, which has the effect of preventing cleaning fluid from infiltrating between the projection nozzle and the main body, avoiding their premature deterioration.
  • the fixing system is a weld between the internal face of the projection nozzle and the main body.
  • the welding is an ultrasonic welding.
  • the weld is part of the same plane.
  • the weld extends over the periphery of the internal face of the projection nozzle.
  • the projection device comprises means for positioning the projection nozzle on the main body, these positioning means comprising at least one rib and a groove cooperating with the rib, the rib and the groove being arranged one on the projection nozzle, the other on the main body.
  • the welding between the projection nozzle and main body is carried out in the vicinity of the positioning means.
  • the vicinity of the positioning means it can for example be understood that the welding is carried out on the same surface as that on which the rib is produced or that on which the groove is produced.
  • the subject of the present invention is a system for dispensing a cleaning fluid comprising at least one reservoir of cleaning fluid, a device for projecting the cleaning fluid characterized according to any of the preceding characteristics and a tube for conveying the cleaning fluid. fluidly connecting the cleaning fluid reservoir to the projection nozzle.
  • FIG. 1 is a perspective representation of a projection device comprising a projection nozzle according to the invention.
  • FIG. 1 is a longitudinal section of a projection nozzle according to a second embodiment of the invention.
  • 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 state of the prior art.
  • upstream and downstream used in the remainder of the description refer to the direction of circulation of a cleaning fluid through the projection device.
  • FIG. 1 There illustrates a projection device 1 of a system for distributing a cleaning fluid, the projection device 1 being configured to project a jet 4 of cleaning fluid against a detection surface 2 of a detection device, as visible on Figures 2 or 3.
  • the detection device comprises on the one hand a main body comprising for example a sensor, and on the other hand the detection surface 2 arranged between the sensor housed in the main body and the external environment of the detection device .
  • the sensor of the detection device can be for example a camera, a radar or even a LIDAR, this list is not exhaustive.
  • This type of detection device emits and/or receives electromagnetic waves towards the external environment of the detection device to detect one or more objects present in this environment.
  • the detection surface 2 is designed so that the electromagnetic waves emitted and/or received by the sensor can pass through said detection surface 2 without being deflected or modified.
  • the projection device 1 intended to be connected to a cleaning fluid distribution network not shown here, is configured to project the cleaning fluid in the form of a jet 4 against the detection surface 2 of the detection device, with a angle of attack on the determined detection surface, the jet possibly being a flat jet extending mainly in one plane.
  • the projection of the cleaning fluid by the projection device 1 thus makes it possible to clean the detection surface 2 of all the elements placed on the latter, whether dirt or drops, which are likely to hinder the acquisition of images.
  • the projection device 1 more particularly comprises a main body 6 participating in delimiting a conveying conduit 8 of the cleaning fluid and a projection nozzle 10 according to the invention.
  • the main body 6 is configured to guide the cleaning fluid from the cleaning fluid distribution network to the projection nozzle 10, the latter being configured to project the cleaning fluid towards the detection surface 2 of the detection device.
  • the projection nozzle 10 comprises a fixing system 12 to the main body 6 so as to secure the projection nozzle 10 to the main body 6.
  • the projection nozzle 10 comprises at least one channel 14 configured to guide the circulation of the cleaning fluid towards an outlet 20 of the cleaning fluid, the projection nozzle 10 further comprising a wall forming a deflector 16 arranged in view of the projection outlet of channel 14, the projection nozzle 10 being formed in one piece.
  • the deflector 16 and the channel 14 constitute the projection nozzle 10.
  • the projection nozzle 10 is formed by a one-piece element, that is to say that the separation of one of the constituent elements of the projection nozzle 10 of the other elements would lead to the destruction of one or the other of the constituent elements of said projection nozzle 10, and this one-piece element is produced so as to accommodate within it a deflector and a channel with a outlet orifice placed opposite the deflector.
  • the channel 14 extends along a main direction of extension, presenting an inlet orifice 18 and the outlet orifice 20, the deflector 16 comprising a wall having a face projection 22 facing the outlet orifice 20 of the channel 14, the projection face 22 extending mainly in a plane secant to the main extension direction of the channel 14.
  • the channel 14 and the deflector 16 are made in a single piece makes it possible to limit the impact of the manufacturing clearances and not to take into account the assembly clearances to ensure the correct position of the deflector 16 relative to the channel and its outlet orifice 20.
  • the channel 14 communicates fluidly with the conveying conduit 8, so that the cleaning fluid circulating in the conveying conduit 8 also circulates through the channel 14 to be projected towards the deflector 16.
  • the projection nozzle 10 comprises at least one synthetic material, the projection nozzle 10 being produced by injection of material.
  • a projection nozzle 10 produced by additive manufacturing would be possible and would not depart from the scope of the invention.
  • the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC, or ABS.
  • the main body 6 has an upper edge 24 and an opposite lower edge 26, the projection nozzle 10 being arranged on the lower edge 26 of said main body 6.
  • the terms “upper” and “lower” are given here arbitrarily, and are not described to give a sense of positioning of the projection device 1 in space.
  • the main body 6 comprises a housing 28 for the projection nozzle 10 so as to retract the projection nozzle 10 and so that the latter does not project from the lower edge 26.
  • the housing 28 takes a generally rectangular shape, delimited by three walls of the lower edge 26 and open to the opposite from the upper edge.
  • the projection nozzle 10 has a shape complementary to that of the housing 28: a section of the projection nozzle 10 seen in a plane parallel to that mentioned previously has in this case a rectangular shape intended to cooperate with the housing 28 of rectangular shape open opposite the upper edge 24.
  • the wall of the projection nozzle forming the deflector 16 has an external face 46 facing this end wall 30, the external face 46 being the face opposite the projection face 22 previously mentioned. It is understood that the external face 46 of the deflector 16, when the deflector 16 is moved under the force exerted by the projection of the cleaning fluid, bears against the end wall 30.
  • the projection device 1 comprises a reservoir 32 of the cleaning fluid disposed between the conveying conduit 8 and the channel 14 of the projection nozzle 10, so that the reservoir forms a buffer zone between the conveying conduit of the main body and the projection nozzle channel.
  • the reservoir 32 thus has the function of storing at least partially a portion of the cleaning fluid arriving from the conveying conduit 8 before said cleaning fluid circulates through the channel 14.
  • the reservoir 32 is delimited both by the main body 6 and by the projection nozzle 10.
  • the reservoir 32 is more particularly produced by a cavity formed in the lower edge 26 of the main body, at the level of the housing and by a bowl formed in the projection nozzle, arranged in the extension of the cavity when the projection nozzle 10 is fixed on the main body, as illustrated in the .
  • the projection nozzle 10 has an internal face 34, intended to face the main body 6 and in which the bowl participating in forming the reservoir is dug, and an opposite external face 36, intended to be turned towards the surface to be cleaned and in which a projection zone 38 of the cleaning fluid is dug.
  • the projection zone 38 consists of a clearance within the projection nozzle in which the cleaning fluid circulates from the outlet orifice 20 of the channel 14 towards the projection face 22 of the deflector then from the projection face towards the outside the projection nozzle with the appropriate angle to be directed, where appropriate in the form of a flat jet 4, towards the surface to be cleaned. It is understood that the fluid emerges from the projection nozzle 10 through the projection zone 38.
  • the channel 14 of the projection nozzle 10 which according to the invention is entirely defined within the projection nozzle 10, is arranged in the thickness of a wall of the projection nozzle by opening on the side of its inlet orifice 18 in the bowl participating in forming the reservoir 32 and on the side of its outlet orifice 20 in the projection zone 38.
  • the projection zone 38 is delimited on the one hand by the deflector 16 and its projection face 22, and on the other hand by an inclined plane 40 into which the outlet orifice 20 of the channel 14 opens.
  • the inclined plane 40 extends in a plane intersecting the plane in which the projection face 22 of the deflector 16 fits. This inclination of the face 40 from which the channel 14 opens opens the projection angle of the cleaning fluid projected from the deflector 16.
  • the inclined plane 40 is oriented so that the longitudinal dimension of the projection zone increases as one approaches the external face 36 of the projection nozzle.
  • An angle is formed between the plane in which the inclined plane 40 fits and the plane in which the projection face 22 of the deflector 16 fits, as illustrated in Figures 2 and 3. This angle is necessary in order to be able to direct the flat jet 4 of cleaning fluid against the detection surface 2 of the detection device without the flat jet being disturbed by the inclined plane 40.
  • the projection nozzle has on its internal face 34 a peripheral flank 42 surrounding the cavity forming part of the reservoir, this peripheral flank 42 being in contact with the main body 6 and in particular with a bottom wall 44 of the housing formed in the main body.
  • the wall forming the deflector 16 extends directly above the peripheral side, at the longitudinal end of the projection nozzle intended to face the end wall 30 of the main body, as mentioned previously.
  • the peripheral side 42 allows in particular the implementation of the fixing system 12, as well as that of positioning means 48 of the projection nozzle 10 on the main body 6.
  • the positioning means 48 comprise a set of male/female organs, and for example a couple formed by a rib and a groove cooperating with the rib, the male organ and the female organ being arranged one on the projection nozzle 10, the other on the main body 6. It is understood that the positioning means 48 make it possible to adjust the position of the projection nozzle 10 relative to the main body 6, when mounting the projection nozzle 10 on the main body 6.
  • the projection nozzle 10 carries a rib forming a male member capable of cooperating with a groove forming a female member carried by the main body 6.
  • the positioning means 48 can, as illustrated, be arranged on the peripheral side 44, longitudinally on either side of the cavity participating in forming the reservoir 32. More particularly, the positioning means 48 are at least partly arranged on the projection nozzle 10 on the peripheral side 44 directly above the deflector 16 so as to best ensure the position of the deflector relative to the end wall 30 of the main body 6.
  • the fixing system 12 is a weld between the projection nozzle 10 and the main body 6, and more particularly between the internal face 34 of the projection nozzle and the bottom wall 44 of the receiving housing formed in the main body 6.
  • the welding is carried out in particular on the peripheral side 44, over the entire periphery thereof, so that the welding is carried out entirely around the tank 32.
  • the welding is an ultrasonic welding. This welding here makes it possible to attach the projection nozzle 10 to the main body 6 by a mixture of material, thereby preventing the projection nozzle 10 from being separated from the main body 6.
  • a weld between the projection nozzle 10 and the main body 6 tends to seal the conveying conduit 8 and/or the reservoir 32 from the external environment, preventing leaks of cleaning fluid at the junction zone between the nozzle projection 10 and the main body 6.
  • the weld is part of the same plane. It is understood that the internal face 34, and in particular the peripheral side 44, on which the fixing system 12 is welded is in a plane which is parallel to the plane of the face of the main body 6 which is welded to said face internal 34 of the projection nozzle 10, that is to say here the bottom wall 44 of the housing 28.
  • the weld between the projection nozzle 10 and main body 6 is carried out in the area of the positioning means 48. It is understood here that once the projection nozzle 10 is mounted against the main body 6, and that the rib of the positioning means 48 is arranged in the groove of the positioning means 48, the welding is carried out at the level of these positioning means 48. Carry out the welding of the projection nozzle 10 and the main body 6 at the level of the means of positioning positioning 48 formed by male and female members cooperating with each other promotes the mixing of material between the projection nozzle 10 and the main body 6 and optimizes the resulting weld.
  • the projection nozzle 10 comprises several channels 14 arranged next to each other along a direction intersecting their main direction of extension, the channels 14 each comprising an orifice outlet 20 opening from an inclined plane facing the deflector 16. It is understood here that the channels 14 form a projection ramp, producing several delayed or simultaneous projections of cleaning fluid against the deflector 16, these delayed or simultaneous projections of cleaning fluid then forming different flat protective jets 4.
  • This deflector 16 can just as easily be formed by a single wall extending facing each of the outlet orifices 20 of the channels 14, or by several walls, each of the walls being arranged facing one of the outlet orifices 20 of the channels 14. This last configuration makes it possible to easily generate different projection angles of one or more of the projection jets produced by the ramp.
  • the projection nozzle 10 takes the form of a tip placed at one end of the main body 6.
  • the projection nozzle 10 extends along a direction of main elongation by presenting a projection end 50 where at least the deflector 16 and the outlet orifice 20 of the channel 14 and an end of opposite connection 52 configured to be connected to the main body.
  • the projection nozzle 10 comprises a latching element 54 constituting the fixing system 12 and arranged at the connecting end 52.
  • the projection nozzle 10 here comprises an annular wall delimiting at least partly the reservoir 32 and a housing of the main body 6. This annular wall is open at the connecting end 52 to receive the main body 6, and more particularly one end connection 58 into which the conveying conduit 8 of the cleaning fluid opens.
  • the latching element 54 comprises for example an elastically deformable member installed at the connecting end 52 of the projection nozzle 10, the elastically deformable member being intended to cooperate with a rigid member 56 of the main body 6. illustrates a step of mounting the projection nozzle 10 on the main body, just before the latching element 54 engages with the rigid member 56, by translation along its main elongation direction.
  • the projection nozzle 10 presents successively, along the direction of main elongation, a connecting portion participating in delimiting the reservoir 32 and the housing of the main body 6, and a projection portion comprising the deflector 16 and the channel 14.
  • the projection device according to the invention differs from what could have been previously described in that the deflector 16 does not rest against a wall of the main body 6.
  • the projection nozzle forms a one-piece assembly comprising a projection zone 38, a channel 14 for supplying cleaning fluid to this projection zone, and a deflector delimiting the projection zone and against which the cleaning fluid is projected at the outlet of the channel 14.
  • the grouping of all these elements in a single piece, also fixed on the main body, makes it possible to control the arrangement of the channel 14 in relation to the deflector, thus ensuring correct positioning by relative to the deflector 16 of the outlet orifice 20 and the inclined plane 40 in which the outlet orifice fits.
  • the invention thus achieves the goal it has set for itself regardless of the embodiment described, by proposing a projection nozzle 10 comprising both a channel 14 capable of projecting a cleaning fluid and a deflector 16 against which is projected the cleaning fluid, with the projection nozzle 10 which is formed in one piece.
  • This design makes it possible to ensure the correct position relative to each other of the elements participating in the orientation of the jet of fluid to be directed onto the surface to be cleaned, and it promotes the sealing of a projection device on which The projection nozzle is installed, preventing projections of cleaning fluid from being inserted between the constituent elements of the projection devices.

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

Abstract

The present invention relates to a spray nozzle (10) of a device (1) for spraying a cleaning fluid, the spray nozzle (10) being intended to be attached to a main body (6) of the spraying device (1) which at least partially defines a duct (8) for conveying the cleaning fluid, characterized in that the spray nozzle (10) comprises at least one channel (14) configured to guide the flow of the cleaning fluid toward a spray outlet for the cleaning fluid, the spray nozzle (10) further comprising a wall forming a deflector (16) arranged facing the spray outlet of the channel (14), the spray nozzle (10) being formed in a single piece.

Description

Buse de projection d’un dispositif de projectionProjection nozzle of a projection device
La présente invention s’inscrit dans le domaine des systèmes de nettoyage de dispositif de détection d’un véhicule, et concerne plus particulièrement un dispositif de nettoyage projetant du liquide de nettoyage sur une surface de détection d’un dispositif de détection.The present invention relates to the field of cleaning systems for vehicle detection devices, and more particularly relates to a cleaning device projecting cleaning liquid onto a detection surface of a detection device.
Ces dernières années, de nombreux équipements sont venus s’ajouter aux derniers modèles de véhicule. Parmi eux, certains équipements fonctionnent par l’intermédiaire de dispositifs de détection, comme par exemple des systèmes de conduite autonome. Ces derniers comprennent une pluralité de dispositifs de détection tels que des caméras, des radars, des LIDARs (acronyme anglais de « light detection and ranging ») ou encore des capteurs d’ondes infrarouges, par exemple. De tels dispositifs de détection comprennent généralement une surface de détection par laquelle les ondes émises par ledit dispositif de détection sont émises vers l’environnement extérieur du véhicule sur lequel est installé le système de conduite autonome et à travers laquelle des ondes passent en retour depuis l’environnement extérieur. Cette surface de détection est généralement optiquement neutre et doit être propre afin de ne pas perturber les signaux émis ou reçus par le dispositif de détection.In recent years, numerous features have been added to the latest vehicle models. Among them, certain equipment operates via detection devices, such as autonomous driving systems. The latter include a plurality of detection devices such as cameras, radars, LIDARs (English acronym for “ light detection and ranging ”) or even infrared wave sensors, for example. Such detection devices generally comprise a detection surface through which the waves emitted by said detection device are emitted towards the external environment of the vehicle on which the autonomous driving system is installed and through which waves pass back from the vehicle. external environment. This detection surface is generally optically neutral and must be clean so as not to disturb the signals emitted or received by the detection device.
Des systèmes de nettoyage de dispositifs de détection comprennent généralement au moins un dispositif de de projection d’un fluide nettoyant installé sur le dispositif de détection et apte à projeter du fluide nettoyant contre la surface de détection de celui-ci. Par ailleurs, le système de nettoyage peut comprendre, alternativement ou de manière complémentaire, un circuit apte à guider un flux d’air vers la surface de détection.Systems for cleaning detection devices generally comprise at least one device for projecting a cleaning fluid installed on the detection device and capable of projecting cleaning fluid against the detection surface thereof. Furthermore, the cleaning system may comprise, alternatively or in a complementary manner, a circuit capable of guiding a flow of air towards the detection surface.
Le dispositif de projection de fluide nettoyant est disposé à proximité de la surface de détection d’un des dispositifs de détection afin d’optimiser le nettoyage de ladite surface de détection. Il est connu que de tels dispositifs de projection comprennent au moins deux éléments : un corps principal et une buse de projection. La buse de projection et le corps principal participent généralement à délimiter un canal à travers circule le fluide nettoyant vers un orifice de sortie. Le corps principal comprend de plus un déflecteur guidant le fluide nettoyant contre la surface de détection. Plus particulièrement, le fluide nettoyant est projeté depuis l’orifice de sortie du canal contre le déflecteur de sorte à générer un jet plat de fluide nettoyant en direction de la surface de détection.The cleaning fluid projection device is placed near the detection surface of one of the detection devices in order to optimize the cleaning of said detection surface. It is known that such projection devices comprise at least two elements: a main body and a projection nozzle. The projection nozzle and the main body generally help to delimit a channel through which the cleaning fluid circulates towards an outlet orifice. The main body further includes a baffle guiding the cleaning fluid against the detection surface. More particularly, the cleaning fluid is projected from the outlet orifice of the channel against the deflector so as to generate a flat jet of cleaning fluid towards the detection surface.
Il est essentiel de savoir assurer un positionnement très précis des pièces l'une par rapport à l'autre, pour être certain que le déflecteur soit positionné correctement, par rapport au canal d'une part et par rapport à la surface à nettoyer. C'est à cette condition que l'on peut avoir un jet avec l'angle d'impact sur la surface à nettoyer conforme à ce qui est souhaité et avec un angle d'ouverture tel que souhaité.It is essential to know how to ensure very precise positioning of the parts in relation to each other, to be certain that the deflector is positioned correctly, in relation to the channel on the one hand and in relation to the surface to be cleaned. It is on this condition that we can have a jet with the angle of impact on the surface to be cleaned consistent with what is desired and with an opening angle as desired.
Par ailleurs, la projection du fluide nettoyant à haute pression contre le déflecteur peut entraîner un déplacement dudit déflecteur par rapport à sa position initiale et provoquer un écartement entre le corps principal et la buse de projection, de telle sorte que du fluide nettoyant peut s’infiltrer dans cet écartement au fur et à mesure de l’utilisation du dispositif de projection, notamment par capillarité. Le fluide nettoyant ainsi infiltré peut entraîner une dégradation du corps principal et/ou de la buse de projection, et plus particulièrement, une dégradation de la fixation entre le corps principal et la buse de projection.Furthermore, the projection of the cleaning fluid at high pressure against the deflector can cause said deflector to move relative to its initial position and cause a separation between the main body and the projection nozzle, such that cleaning fluid can infiltrate into this spacing as the projection device is used, in particular by capillarity. The cleaning fluid thus infiltrated may cause degradation of the main body and/or the projection nozzle, and more particularly, degradation of the attachment between the main body and the projection nozzle.
La présente invention propose une solution alternative à ce qui existe actuellement en proposant une buse de projection, formant partie d’un dispositif de projection de fluide nettoyant, qui permet de projeter de façon répétable et fiable un jet sur la surface à nettoyer conforme à ce qui est théoriquement calculé, en évitant par ailleurs une infiltration de fluide nettoyant au niveau d’une zone de soudure entre le corps principal et ladite buse de projection.The present invention proposes an alternative solution to what currently exists by proposing a projection nozzle, forming part of a cleaning fluid projection device, which makes it possible to repeatedly and reliably project a jet onto the surface to be cleaned in accordance with this which is theoretically calculated, while also avoiding infiltration of cleaning fluid at a welding zone between the main body and said projection nozzle.
Dans ce contexte, la présente invention a pour principal objet une buse de projection d’un dispositif de projection d’un fluide nettoyant, la buse de projection étant destiné à être fixé à un corps principal du dispositif de projection délimitant au moins en partie un conduit d’acheminement du fluide nettoyant, caractérisée en ce que la buse de projection comprend au moins un canal configuré pour guider la circulation du fluide nettoyant vers une sortie de projection du fluide nettoyant, la buse de projection comprenant en outre une paroi formant un déflecteur disposé en regard de la sortie de projection du canal, la buse de projection étant formée d’un seul tenant.In this context, the main object of the present invention is a projection nozzle of a device for projecting a cleaning fluid, the projection nozzle being intended to be fixed to a main body of the projection device delimiting at least in part a conduit for conveying the cleaning fluid, characterized in that the projection nozzle comprises at least one channel configured to guide the circulation of the cleaning fluid towards a projection outlet of the cleaning fluid, the projection nozzle further comprising a wall forming a deflector arranged opposite the projection outlet of the channel, the projection nozzle being formed in one piece.
Selon l’invention, le déflecteur et le canal sont ainsi constitutifs d’une même pièce, la buse de projection. Plus particulièrement, la buse de projection est formée par un élément monobloc, c’est-à-dire que la séparation d’un des éléments constitutifs de la buse de projection des autres éléments entraîneraient la destruction de l’un ou l’autre des éléments constitutifs de ladite buse de projection.According to the invention, the deflector and the channel thus constitute the same part, the projection nozzle. More particularly, the projection nozzle is formed by a one-piece element, that is to say that the separation of one of the constituent elements of the projection nozzle from the other elements would result in the destruction of one or the other of the constituent elements of said projection nozzle.
De la sorte, on solutionne le problème technique précédemment évoqué puisque l’intégration du canal et du déflecteur dans une même pièce permet de ne pas tenir compte des jeux d’assemblage entre la buse de projection et le corps d’assemblage pour l’obtention d’un positionnement précis entre canal et déflecteur.In this way, the technical problem previously mentioned is solved since the integration of the channel and the deflector in the same part makes it possible to not take into account the assembly clearances between the projection nozzle and the assembly body to obtain precise positioning between channel and deflector.
Selon une caractéristique optionnelle préférée de l’invention, la buse de projection comprend en outre un système de fixation configuré pour rendre solidaire la buse de projection au corps principal du dispositif de projection.According to a preferred optional characteristic of the invention, the projection nozzle further comprises a fixing system configured to secure the projection nozzle to the main body of the projection device.
Selon une caractéristique optionnelle de l’invention, le canal s’étend le long d’une direction d’extension principale en présentant un orifice d’entrée et un orifice de sortie, le déflecteur comprenant une paroi présentant une face de projection en regard de l’orifice de sortie du canal, la face de projection s’étendant principalement dans un plan sécant à la direction d’extension principale du canal.According to an optional characteristic of the invention, the channel extends along a main direction of extension by presenting an inlet orifice and an outlet orifice, the deflector comprising a wall having a projection face facing the outlet orifice of the channel, the projection face extending mainly in a plane secant to the direction of main extension of the channel.
Selon une autre caractéristique optionnelle de l’invention, la face de laquelle débouche le canal s’étend dans un plan sécant au plan dans lequel s’inscrit une face du déflecteur sur laquelle est projetée le fluide nettoyant. Cette inclinaison de la face de laquelle débouche le canal ouvre l’angle de projection du fluide nettoyant projeté depuis le déflecteur.According to another optional characteristic of the invention, the face from which the channel opens extends in a plane intersecting the plane in which a face of the deflector is located onto which the cleaning fluid is projected. This inclination of the face from which the channel opens opens the projection angle of the cleaning fluid projected from the deflector.
Selon une autre caractéristique optionnelle de l’invention, la buse de projection comprend au moins un matériau synthétique, la buse de projection étant réalisée par injection de matière.According to another optional characteristic of the invention, the projection nozzle comprises at least one synthetic material, the projection nozzle being produced by injection of material.
Avantageusement, le matériau synthétique est polypropylène, polyuréthane, polyamide, polycarbonate, polyoxyméthylène, PVC, ou ABS.Advantageously, the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC, or ABS.
Selon une autre caractéristique optionnelle de l’invention, la buse de projection comprend plusieurs canaux disposés les uns à côtés des autres le long d’une direction sécante à leur direction d’extension principale, les canaux comprenant chacun un orifice de sortie, le déflecteur s’étendant en regard de chacun des orifices de sortie des canaux. On permet ainsi la réalisation d’un dispositif de projection sous forme de rampe, particulièrement adapté au nettoyage de dispositif de détection à large surface de détection, comme un LIDAR par exemple.According to another optional characteristic of the invention, the projection nozzle comprises several channels arranged next to each other along a direction secant to their main extension direction, the channels each comprising an outlet orifice, the deflector extending opposite each of the outlet orifices of the channels. This allows the production of a projection device in the form of a ramp, particularly suitable for cleaning detection devices with a large detection surface, such as a LIDAR for example.
Selon une autre caractéristique optionnelle de l’invention, le déflecteur comporte une seule paroi s’étendant en regard de chacun des orifices de sortie des canaux.According to another optional characteristic of the invention, the deflector comprises a single wall extending opposite each of the outlet orifices of the channels.
Selon une autre caractéristique optionnelle de l’invention, le déflecteur comporte plusieurs parois, chacune des parois étant disposée en regard de l’un des orifices de sortie des canaux. Cette configuration particulière permet de générer différents jets de projection selon au moins deux angles de projection différents.According to another optional characteristic of the invention, the deflector comprises several walls, each of the walls being arranged opposite one of the outlet orifices of the channels. This particular configuration makes it possible to generate different projection jets according to at least two different projection angles.
Selon une autre caractéristique optionnelle de l’invention, la buse de projection présente une face interne configurée pour être en regard du corps principal et une face externe opposée sur laquelle débouche une zone de projection du fluide nettoyant, le système de fixation étant disposé sur la face interne.
Selon une autre caractéristique optionnelle de l’invention, la zone de projection est délimitée par le déflecteur et par un plan incliné dans lequel débouche l’orifice de sortie du canal en regard du déflecteur.According to another optional characteristic of the invention, the projection nozzle has an internal face configured to face the main body and an opposite external face onto which opens a projection zone of the cleaning fluid, the fixing system being arranged on the internal side.
According to another optional characteristic of the invention, the projection zone is delimited by the deflector and by an inclined plane into which the outlet orifice of the channel opens facing the deflector.
Selon une autre caractéristique optionnelle de l’invention, la buse de projection s’étend le long d’une direction d’allongement principal en présentant une extrémité de projection où est disposé au moins le déflecteur et l’orifice de sortie du canal et une extrémité de liaison opposée, la buse de projection comprenant un élément d’encliquetage constitutif du système de fixation et disposé à l’extrémité de liaison.According to another optional characteristic of the invention, the projection nozzle extends along a direction of main elongation by presenting a projection end where at least the deflector and the outlet orifice of the channel are arranged and a opposite connecting end, the projection nozzle comprising a snap-fastening element constituting the fixing system and disposed at the connecting end.
La présente invention a également pour objet un dispositif de projection d’un système de distribution d’un fluide nettoyant, le dispositif de projection comprenant un corps principal participant à délimiter un conduit d’acheminement du fluide nettoyant et une buse de projection caractérisée selon l’une quelconque des caractéristiques précédentes, le canal communiquant fluidiquement avec le conduit d’acheminement.The present invention also relates to a device for projecting a system for distributing a cleaning fluid, the projection device comprising a main body participating in delimiting a conduit for conveying the cleaning fluid and a projection nozzle characterized according to any of the preceding characteristics, the channel communicating fluidly with the conveying conduit.
Selon une autre caractéristique optionnelle de l’invention, le dispositif de projection comprend un réservoir du fluide nettoyant disposé entre le conduit d’acheminement et le canal de la buse de projection, la buse de projection participant au moins en partie à délimiter le réservoir.According to another optional characteristic of the invention, the projection device comprises a reservoir of the cleaning fluid disposed between the conveying conduit and the channel of the projection nozzle, the projection nozzle participating at least in part in delimiting the reservoir.
Selon une autre caractéristique optionnelle de l’invention, le réservoir est délimité à la fois par le corps principal et par la buse de projection.According to another optional characteristic of the invention, the reservoir is delimited both by the main body and by the projection nozzle.
Selon une autre caractéristique optionnelle de l’invention, le corps principal comprend un logement de la buse de projection, le déflecteur présentant une surface interne en regard de l’orifice de sortie du canal et une surface externe en regard d’une paroi du corps principal participant à délimiter le logement.According to another optional characteristic of the invention, the main body comprises a housing for the projection nozzle, the deflector having an internal surface facing the outlet orifice of the channel and an external surface facing a wall of the body main participant in demarcating the accommodation.
Dans ce contexte, il est notable que la projection du fluide nettoyant depuis le canal contre le déflecteur peut entraîner un déplacement du déflecteur par rapport à sa position initiale, mais en le poussant vers une paroi du corps principal participant à délimiter le logement. La projection du fluide nettoyant a alors pour effet de réduire un interstice possible entre la buse de projection et le corps principal, ce qui a pour effet d’interdire à du fluide nettoyant de s’infiltrer entre la buse de projection et le corps principal, évitant leurs dégradations prématurées.In this context, it is notable that the projection of the cleaning fluid from the channel against the deflector can cause the deflector to move relative to its initial position, but by pushing it towards a wall of the main body participating in delimiting the housing. The projection of the cleaning fluid then has the effect of reducing a possible gap between the projection nozzle and the main body, which has the effect of preventing cleaning fluid from infiltrating between the projection nozzle and the main body, avoiding their premature deterioration.
Selon une autre caractéristique optionnelle de l’invention, le système de fixation est une soudure entre la face interne de la buse de projection et le corps principal.According to another optional characteristic of the invention, the fixing system is a weld between the internal face of the projection nozzle and the main body.
Selon une autre caractéristique optionnelle de l’invention, la soudure est une soudure par ultrason.According to another optional characteristic of the invention, the welding is an ultrasonic welding.
Selon une autre caractéristique optionnelle de l’invention, la soudure s’inscrit dans un même plan.According to another optional characteristic of the invention, the weld is part of the same plane.
Selon une autre caractéristique optionnelle de l’invention, la soudure s’étend sur la périphérie de la face interne de la buse de projection.According to another optional characteristic of the invention, the weld extends over the periphery of the internal face of the projection nozzle.
Selon une autre caractéristique optionnelle de l’invention, le dispositif de projection comprend des moyens de positionnement de la buse de projection sur le corps principal, ces moyens de positionnement comprenant au moins une nervure et une rainure coopérant avec la nervure, la nervure et la rainure étant disposées l’une sur la buse de projection, l’autre sur le corps principal.According to another optional characteristic of the invention, the projection device comprises means for positioning the projection nozzle on the main body, these positioning means comprising at least one rib and a groove cooperating with the rib, the rib and the groove being arranged one on the projection nozzle, the other on the main body.
Selon une autre caractéristique optionnelle de l’invention, la soudure entre la buse de projection et corps principal est réalisée au voisinage des moyens de positionnement. Par au voisinage des moyens de positionnement, il peut par exemple être compris que la soudure est réalisée sur une même surface que celle sur laquelle est réalisée la nervure ou celle sur laquelle est réalisée la rainure. According to another optional characteristic of the invention, the welding between the projection nozzle and main body is carried out in the vicinity of the positioning means. By the vicinity of the positioning means, it can for example be understood that the welding is carried out on the same surface as that on which the rib is produced or that on which the groove is produced.
La présente invention a enfin pour objet un système de distribution d’un fluide nettoyant comprenant au moins un réservoir de fluide nettoyant, un dispositif de projection du fluide nettoyant caractérisé selon l’une quelconque des caractéristiques précédentes et un tube d’acheminement du fluide nettoyant reliant fluidiquement le réservoir de fluide nettoyant à la buse de projection.Finally, the subject of the present invention is a system for dispensing a cleaning fluid comprising at least one reservoir of cleaning fluid, a device for projecting the cleaning fluid characterized according to any of the preceding characteristics and a tube for conveying the cleaning fluid. fluidly connecting the cleaning fluid reservoir to the projection nozzle.
D’autres caractéristiques, détails et avantages de l’invention ressortiront plus clairement à la lecture de la description qui suit d’une part, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels :Other characteristics, details and advantages of the invention will emerge more clearly on reading the description which follows on the one hand, and several examples of embodiment given for informational and non-limiting purposes with reference to the appended schematic drawings on the other hand. share, on which:
est une représentation en perspective d’un dispositif de projection comprenant une buse de projection selon l’invention ; is a perspective representation of a projection device comprising a projection nozzle according to the invention;
est une coupe longitudinale d’une buse de projection selon un premier mode de réalisation de l’invention ; et is a longitudinal section of a projection nozzle according to a first embodiment of the invention; And
est une coupe longitudinale d’une buse de projection selon un deuxième mode de réalisation de l’invention. is a longitudinal section of a projection nozzle according to a second embodiment of the invention.
DESCRIPTION DETAILLEDETAILED DESCRIPTION
Les caractéristiques, variantes et les différentes formes de réalisation de l’invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes par rapport aux autres. On pourra notamment imaginer des variantes de l’invention ne comprenant qu’une sélection de caractéristiques décrites par la suite de manière isolée des autres caractéristiques décrites, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique et/ou pour différencier l’invention par rapport à l’état de la technique antérieure.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. In particular, it will be possible to imagine 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 state of the prior art.
Sur les figures, les éléments communs à plusieurs figures conservent la même référence.In the figures, elements common to several figures retain the same reference.
De plus, les termes « en amont » et « en aval » utilisés dans la suite de la description font référence au sens de circulation d’un fluide nettoyant à travers le dispositif de projection.In addition, the terms “upstream” and “downstream” used in the remainder of the description refer to the direction of circulation of a cleaning fluid through the projection device.
La illustre un dispositif de projection 1 d’un système de distribution d’un fluide nettoyant, le dispositif de projection 1 étant configuré pour projeter un jet 4 de fluide nettoyant contre une surface de détection 2 d’un dispositif de détection, tel que visible sur les figures 2 ou 3.There illustrates a projection device 1 of a system for distributing a cleaning fluid, the projection device 1 being configured to project a jet 4 of cleaning fluid against a detection surface 2 of a detection device, as visible on Figures 2 or 3.
Plus particulièrement, le dispositif de détection comprend d’une part un organe principal comprenant par exemple un capteur, et d’autre part la surface de détection 2 disposée entre le capteur logé dans l’organe principal et l’environnement extérieur du dispositif de détection. Le capteur du dispositif de détection peut être par exemple une caméra, un radar ou encore un LIDAR, cette liste n’étant pas exhaustive. Ce type de dispositif de détection émet et/ou reçoit des ondes électromagnétiques vers l’environnement extérieur du dispositif de détection pour détecter un ou plusieurs objets présents dans cet environnement. La surface de détection 2 est conçue de sorte que les ondes électromagnétiques émises et/ou reçues par le capteur puissent traversées ladite surface de détection 2 sans être déviées ou modifiées.More particularly, the detection device comprises on the one hand a main body comprising for example a sensor, and on the other hand the detection surface 2 arranged between the sensor housed in the main body and the external environment of the detection device . The sensor of the detection device can be for example a camera, a radar or even a LIDAR, this list is not exhaustive. This type of detection device emits and/or receives electromagnetic waves towards the external environment of the detection device to detect one or more objects present in this environment. The detection surface 2 is designed so that the electromagnetic waves emitted and/or received by the sensor can pass through said detection surface 2 without being deflected or modified.
Le dispositif de projection 1, destiné à être relié à un réseau de distribution de fluide nettoyant ici non représenté, est configuré pour projeter le fluide nettoyant sous la forme d’un jet 4 contre la surface de détection 2 du dispositif de détection, avec un angle d’attaque sur la surface de détection déterminé, le jet pouvant le cas échéant être un jet plat s’étendant principalement dans un plan. La projection du fluide nettoyant par le dispositif de projection 1 permet ainsi de nettoyer la surface de détection 2 de tous les éléments disposés sur cette dernière, que ce soient des salissures ou des gouttes, qui sont susceptible de gêner l’acquisition d’images.The projection device 1, intended to be connected to a cleaning fluid distribution network not shown here, is configured to project the cleaning fluid in the form of a jet 4 against the detection surface 2 of the detection device, with a angle of attack on the determined detection surface, the jet possibly being a flat jet extending mainly in one plane. The projection of the cleaning fluid by the projection device 1 thus makes it possible to clean the detection surface 2 of all the elements placed on the latter, whether dirt or drops, which are likely to hinder the acquisition of images.
Pour cela et tel que visible sur les figures 2 et 3, le dispositif de projection 1 comprend plus particulièrement un corps principal 6 participant à délimiter un conduit d’acheminement 8 du fluide nettoyant et une buse de projection 10 selon l’invention. Le corps principal 6 est configuré pour guider le fluide nettoyant depuis le réseau de distribution du fluide nettoyant jusqu’à la buse de projection 10, cette dernière étant configurée pour projeter le fluide nettoyant vers la surface de détection 2 du dispositif de détection. La buse de projection 10 comprend un système de fixation 12 au corps principal 6 de sorte à rendre solidaire la buse de projection 10 du corps principal 6.For this and as visible in Figures 2 and 3, the projection device 1 more particularly comprises a main body 6 participating in delimiting a conveying conduit 8 of the cleaning fluid and a projection nozzle 10 according to the invention. The main body 6 is configured to guide the cleaning fluid from the cleaning fluid distribution network to the projection nozzle 10, the latter being configured to project the cleaning fluid towards the detection surface 2 of the detection device. The projection nozzle 10 comprises a fixing system 12 to the main body 6 so as to secure the projection nozzle 10 to the main body 6.
Selon l’invention, la buse de projection 10 comprend au moins un canal 14 configuré pour guider la circulation du fluide nettoyant vers un orifice de sortie 20 du fluide nettoyant, la buse de projection 10 comprenant en outre une paroi formant un déflecteur 16 disposé en regard de la sortie de projection du canal 14, la buse de projection 10 étant formée d’un seul tenant. Autrement dit, le déflecteur 16 et le canal 14 sont constitutifs de la buse de projection 10. Plus particulièrement, la buse de projection 10 est formée par un élément monobloc, c’est-à-dire que la séparation d’un des éléments constitutifs de la buse de projection 10 des autres éléments entraîneraient la destruction de l’un ou l’autre des éléments constitutifs de ladite buse de projection 10, et cet élément monobloc est réalisé de manière à loger en son sein un déflecteur et un canal avec un orifice de sortie disposé en regard du déflecteur.According to the invention, the projection nozzle 10 comprises at least one channel 14 configured to guide the circulation of the cleaning fluid towards an outlet 20 of the cleaning fluid, the projection nozzle 10 further comprising a wall forming a deflector 16 arranged in view of the projection outlet of channel 14, the projection nozzle 10 being formed in one piece. In other words, the deflector 16 and the channel 14 constitute the projection nozzle 10. More particularly, the projection nozzle 10 is formed by a one-piece element, that is to say that the separation of one of the constituent elements of the projection nozzle 10 of the other elements would lead to the destruction of one or the other of the constituent elements of said projection nozzle 10, and this one-piece element is produced so as to accommodate within it a deflector and a channel with a outlet orifice placed opposite the deflector.
Tel que visible sur l’exemple illustré, le canal 14 s’étend le long d’une direction d’extension principale en présentant un orifice d’entrée 18 et l’orifice de sortie 20, le déflecteur 16 comprenant une paroi présentant une face de projection 22 en regard de l’orifice de sortie 20 du canal 14, la face de projection 22 s’étendant principalement dans un plan sécant à la direction d’extension principale du canal 14. C’est notamment le contrôle de la valeur de l’angle entre la face de projection et la direction d’extension principale du canal 14, combinée avec le contrôle de la distance entre la face de projection 22 et l’orifice de sortie 20, qui permet de s’assurer que le jet 4 est conforme au jet souhaité pour assurer le nettoyage de la surface de détection 2 du dispositif de détection. Le fait que, tel qu’évoqué précédemment, le canal 14 et le déflecteur 16 soient réalisés dans une pièce d’un seul tenant permet de limiter l’impact des jeux de fabrication et de ne pas tenir compte des jeux de montage pour s’assurer de la bonne position du déflecteur 16 par rapport au canal et son orifice de sortie 20.As visible in the example illustrated, the channel 14 extends along a main direction of extension, presenting an inlet orifice 18 and the outlet orifice 20, the deflector 16 comprising a wall having a face projection 22 facing the outlet orifice 20 of the channel 14, the projection face 22 extending mainly in a plane secant to the main extension direction of the channel 14. This is in particular the control of the value of the angle between the projection face and the main extension direction of the channel 14, combined with the control of the distance between the projection face 22 and the outlet orifice 20, which makes it possible to ensure that the jet 4 conforms to the desired jet to ensure cleaning of the detection surface 2 of the detection device. The fact that, as mentioned previously, the channel 14 and the deflector 16 are made in a single piece makes it possible to limit the impact of the manufacturing clearances and not to take into account the assembly clearances to ensure the correct position of the deflector 16 relative to the channel and its outlet orifice 20.
Le canal 14 communique fluidiquement avec le conduit d’acheminement 8, de sorte que le fluide nettoyant circulant dans le conduit d’acheminement 8 circule également à travers le canal 14 pour être projeté vers le déflecteur 16.The channel 14 communicates fluidly with the conveying conduit 8, so that the cleaning fluid circulating in the conveying conduit 8 also circulates through the channel 14 to be projected towards the deflector 16.
Par ailleurs, préférentiellement, la buse de projection 10 comprend au moins un matériau synthétique, la buse de projection 10 étant réalisée par injection de matière. Cependant, une buse de projection 10 réalisée par fabrication additive serait envisageable et ne sortirait pas du cadre de l’invention.Furthermore, preferably, the projection nozzle 10 comprises at least one synthetic material, the projection nozzle 10 being produced by injection of material. However, a projection nozzle 10 produced by additive manufacturing would be possible and would not depart from the scope of the invention.
Avantageusement, le matériau synthétique est polypropylène, polyuréthane, polyamide, polycarbonate, polyoxyméthylène, PVC, ou ABS.Advantageously, the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC, or ABS.
On va maintenant décrire un premier mode de réalisation du dispositif de projection 1 en référence à la avant de décrire un deuxième mode de réalisation du dispositif de projection 1.We will now describe a first embodiment of the projection device 1 with reference to the before describing a second embodiment of the projection device 1.
Tel qu’illustré sur la , le corps principal 6 présente un bord supérieur 24 et un bord inférieur 26 opposé, la buse de projection 10 étant disposée sur le bord inférieur 26 dudit corps principal 6. Les termes « supérieur » et « inférieur » sont ici donnés à titre arbitraire, et ne sont pas décrits pour donner un sens de positionnement du dispositif de projection 1 dans l’espace.As illustrated on the , the main body 6 has an upper edge 24 and an opposite lower edge 26, the projection nozzle 10 being arranged on the lower edge 26 of said main body 6. The terms “upper” and “lower” are given here arbitrarily, and are not described to give a sense of positioning of the projection device 1 in space.
Avantageusement, le corps principal 6 comprend un logement 28 de la buse de projection 10 de manière à escamoter la buse de projection 10 et que cette dernière ne soit pas en saillie du bord inférieur 26. Selon une section du dispositif de projection 1 vue dans un plan parallèle à une direction d’allongement principal du conduit d’acheminement 8 et sensiblement perpendiculaire aux bord supérieur 24 et bord inférieur 26, le logement 28 prend une forme globalement rectangulaire, délimité par trois parois du bord inférieur 26 et ouvert à l’opposé du bord supérieur. Tel qu’illustré, la buse de projection 10 présente une forme complémentaire de celle du logement 28 : une section de la buse de projection 10 vue dans un plan parallèle à celui évoqué précédemment présente dans ce cas une forme rectangulaire destinée à coopérer avec le logement 28 de forme rectangulaire ouverte à l’opposé du bord supérieur 24.Advantageously, the main body 6 comprises a housing 28 for the projection nozzle 10 so as to retract the projection nozzle 10 and so that the latter does not project from the lower edge 26. According to a section of the projection device 1 seen in a plane parallel to a direction of main elongation of the conveying conduit 8 and substantially perpendicular to the upper edge 24 and lower edge 26, the housing 28 takes a generally rectangular shape, delimited by three walls of the lower edge 26 and open to the opposite from the upper edge. As illustrated, the projection nozzle 10 has a shape complementary to that of the housing 28: a section of the projection nozzle 10 seen in a plane parallel to that mentioned previously has in this case a rectangular shape intended to cooperate with the housing 28 of rectangular shape open opposite the upper edge 24.
Parmi les parois délimitant le logement 28, on distingue notamment une paroi d’extrémité 30 qui s’étend à l’une des extrémités longitudinales du corps principal 6. La paroi d’extrémité 30 forme ainsi une paroi de butée au déplacement longitudinal de la buse de projection 10 lorsque celle-ci est disposée dans le logement tel qu’illustré sur la . Plus particulièrement, la paroi de la buse de projection formant le déflecteur 16 présente une face externe 46 en regard de cette paroi d’extrémité 30, la face externe 46 étant la face opposée à la face de projection 22 précédemment évoquée. On comprend que la face externe 46 du déflecteur 16, lorsque le déflecteur 16 est déplacé sous la force exercée par la projection du fluide nettoyant, prend appui contre la paroi d’extrémité 30. Ceci a pour effet de limiter la déformation dudit déflecteur 16 mais également d’assurer un plaquage du déflecteur contre la paroi d’extrémité lorsque du fluide est projeté, et d’éviter ainsi le risque que des gouttes de fluide viennent par capillarité s’insérer entre la buse de projection 10 et le corps principal 6.Among the walls delimiting the housing 28, there is in particular an end wall 30 which extends to one of the longitudinal ends of the main body 6. The end wall 30 thus forms a stop wall for the longitudinal movement of the projection nozzle 10 when it is arranged in the housing as illustrated on the . More particularly, the wall of the projection nozzle forming the deflector 16 has an external face 46 facing this end wall 30, the external face 46 being the face opposite the projection face 22 previously mentioned. It is understood that the external face 46 of the deflector 16, when the deflector 16 is moved under the force exerted by the projection of the cleaning fluid, bears against the end wall 30. This has the effect of limiting the deformation of said deflector 16 but also to ensure that the deflector is pressed against the end wall when fluid is projected, and thus to avoid the risk of drops of fluid being inserted by capillary action between the projection nozzle 10 and the main body 6.
Le dispositif de projection 1 comprend un réservoir 32 du fluide nettoyant disposé entre le conduit d’acheminement 8 et le canal 14 de la buse de projection 10, de sorte que le réservoir forme une zone tampon entre le conduit d’acheminement du corps principal et le canal de la buse de projection. Le réservoir 32 a ainsi pour fonction de stocker au moins partiellement une partie du fluide nettoyant arrivant du conduit d’acheminement 8 avant que ledit fluide nettoyant circule à travers le canal 14.The projection device 1 comprises a reservoir 32 of the cleaning fluid disposed between the conveying conduit 8 and the channel 14 of the projection nozzle 10, so that the reservoir forms a buffer zone between the conveying conduit of the main body and the projection nozzle channel. The reservoir 32 thus has the function of storing at least partially a portion of the cleaning fluid arriving from the conveying conduit 8 before said cleaning fluid circulates through the channel 14.
Le réservoir 32 est délimité à la fois par le corps principal 6 et par la buse de projection 10. Le réservoir 32 est plus particulièrement réalisé par une cavité formée dans le bord inférieur 26 du corps principal, au niveau du logement et par une cuvette formée dans la buse de projection, disposée dans le prolongement de la cavité lorsque la buse de projection 10 est fixée sur le corps principal, tel qu’illustré sur la .The reservoir 32 is delimited both by the main body 6 and by the projection nozzle 10. The reservoir 32 is more particularly produced by a cavity formed in the lower edge 26 of the main body, at the level of the housing and by a bowl formed in the projection nozzle, arranged in the extension of the cavity when the projection nozzle 10 is fixed on the main body, as illustrated in the .
La buse de projection 10 présente une face interne 34, destinée à être en regard du corps principal 6 et dans laquelle est creusée la cuvette participant à former le réservoir, et une face externe 36 opposée, destinée à être tournée vers la surface à nettoyer et dans laquelle est creusée une zone de projection 38 du fluide nettoyant. La zone de projection 38 consiste en un dégagement au sein de la buse de projection dans laquelle le fluide nettoyant circule de l’orifice de sortie 20 du canal 14 vers la face de projection 22 du déflecteur puis de la face de projection vers l’extérieur le buse de projection avec l’angle approprié pour être dirigé, le cas échéant sous forme d’un jet plat 4, vers la surface à nettoyer. On comprend que le fluide débouche de la buse de projection 10 par la zone de projection 38.The projection nozzle 10 has an internal face 34, intended to face the main body 6 and in which the bowl participating in forming the reservoir is dug, and an opposite external face 36, intended to be turned towards the surface to be cleaned and in which a projection zone 38 of the cleaning fluid is dug. The projection zone 38 consists of a clearance within the projection nozzle in which the cleaning fluid circulates from the outlet orifice 20 of the channel 14 towards the projection face 22 of the deflector then from the projection face towards the outside the projection nozzle with the appropriate angle to be directed, where appropriate in the form of a flat jet 4, towards the surface to be cleaned. It is understood that the fluid emerges from the projection nozzle 10 through the projection zone 38.
Dans ce contexte, il est notable que le canal 14 de la buse de projection 10, qui selon l’invention est intégralement défini au sein de la buse de projection 10, est agencé dans l’épaisseur d’une paroi de la buse de projection en débouchant du côté de son orifice d’entrée 18 dans la cuvette participant à former le réservoir 32 et du côté de son orifice de sortie 20 dans la zone de projection 38.In this context, it is notable that the channel 14 of the projection nozzle 10, which according to the invention is entirely defined within the projection nozzle 10, is arranged in the thickness of a wall of the projection nozzle by opening on the side of its inlet orifice 18 in the bowl participating in forming the reservoir 32 and on the side of its outlet orifice 20 in the projection zone 38.
La zone de projection 38 est délimitée d’une part par le déflecteur 16 et sa face de projection 22, et d’autre part par un plan incliné 40 dans lequel débouche l’orifice de sortie 20 du canal 14.The projection zone 38 is delimited on the one hand by the deflector 16 and its projection face 22, and on the other hand by an inclined plane 40 into which the outlet orifice 20 of the channel 14 opens.
Le plan incliné 40 s’étend dans un plan sécant au plan dans lequel s’inscrit la face de projection 22 du déflecteur 16. Cette inclinaison de la face 40 de laquelle débouche le canal 14 ouvre l’angle de projection du fluide nettoyant projeté depuis le déflecteur 16. Le plan incliné 40 est orienté de sorte que la dimension longitudinale de la zone de projection augmente au fur et à mesure qu’on se rapproche de la face externe 36 de la buse de projection. Un angle est formé entre le plan dans lequel s’inscrit le plan incliné 40 et le plan dans lequel s’inscrit la face de projection 22 du déflecteur 16, telle qu’illustré dans les Figures 2 et 3. Cet angle est nécessaire afin de pouvoir diriger le jet plat 4 de fluide nettoyant contre la surface de détection 2 du dispositif de détection sans que le jet plat ne soit perturbé par le plan incliné 40.The inclined plane 40 extends in a plane intersecting the plane in which the projection face 22 of the deflector 16 fits. This inclination of the face 40 from which the channel 14 opens opens the projection angle of the cleaning fluid projected from the deflector 16. The inclined plane 40 is oriented so that the longitudinal dimension of the projection zone increases as one approaches the external face 36 of the projection nozzle. An angle is formed between the plane in which the inclined plane 40 fits and the plane in which the projection face 22 of the deflector 16 fits, as illustrated in Figures 2 and 3. This angle is necessary in order to be able to direct the flat jet 4 of cleaning fluid against the detection surface 2 of the detection device without the flat jet being disturbed by the inclined plane 40.
La buse de projection comporte sur sa face interne 34 un flanc périphérique 42 entourant la cavité formant partie du réservoir, ce flanc périphérique 42 étant au contact du corps principal 6 et notamment d’une paroi de fond 44 du logement formé dans le corps principal.The projection nozzle has on its internal face 34 a peripheral flank 42 surrounding the cavity forming part of the reservoir, this peripheral flank 42 being in contact with the main body 6 and in particular with a bottom wall 44 of the housing formed in the main body.
La paroi formant le déflecteur 16 s’étend à l’aplomb du flanc périphérique, à l’extrémité longitudinale de la buse de projection destinée à être en regard de la paroi d’extrémité 30 du corps principal, tel qu’évoqué précédemment.The wall forming the deflector 16 extends directly above the peripheral side, at the longitudinal end of the projection nozzle intended to face the end wall 30 of the main body, as mentioned previously.
Le flanc périphérique 42 permet notamment la mise en œuvre du système de fixation 12, ainsi que celle de moyens de positionnement 48 de la buse de projection 10 sur le corps principal 6.The peripheral side 42 allows in particular the implementation of the fixing system 12, as well as that of positioning means 48 of the projection nozzle 10 on the main body 6.
Les moyens de positionnement 48 comprennent un ensemble d’organes mâle/femelle, et à titre d’exemple un couple formé par une nervure et une rainure coopérant avec la nervure, l’organe mâle et l’organe femelle étant disposés l’un sur la buse de projection 10, l’autre sur le corps principal 6. On comprend que les moyens de positionnement 48 permettent d’ajuster la position de la buse de projection 10 par rapport au corps principal 6, lors du montage de la buse de projection 10 sur le corps principal 6. Dans l’exemple illustré ici, la buse de projection 10 porte une nervure formant un organe mâle apte à coopérer avec une rainure formant un organe femelle porté par le corps principal 6.The positioning means 48 comprise a set of male/female organs, and for example a couple formed by a rib and a groove cooperating with the rib, the male organ and the female organ being arranged one on the projection nozzle 10, the other on the main body 6. It is understood that the positioning means 48 make it possible to adjust the position of the projection nozzle 10 relative to the main body 6, when mounting the projection nozzle 10 on the main body 6. In the example illustrated here, the projection nozzle 10 carries a rib forming a male member capable of cooperating with a groove forming a female member carried by the main body 6.
Les moyens de positionnement 48 peuvent, tel qu’illustré, être disposés sur le flanc périphérique 44, longitudinalement de part et d’autre de la cavité participant à former le réservoir 32. Plus particulièrement, les moyens de positionnement 48 sont au moins en partie disposés sur la buse de projection 10 sur le flanc périphérique 44 à l’aplomb du déflecteur 16 de sorte à assurer au mieux la position du déflecteur par rapport à la paroi d’extrémité 30 du corps principal 6.The positioning means 48 can, as illustrated, be arranged on the peripheral side 44, longitudinally on either side of the cavity participating in forming the reservoir 32. More particularly, the positioning means 48 are at least partly arranged on the projection nozzle 10 on the peripheral side 44 directly above the deflector 16 so as to best ensure the position of the deflector relative to the end wall 30 of the main body 6.
Selon l’invention, le système de fixation 12 est une soudure entre la buse de projection 10 et le corps principal 6, et plus particulièrement entre la face interne 34 de la buse de projection et la paroi de fond 44 du logement de réception formé dans le corps principal 6. La soudure est notamment réalisée sur le flanc périphérique 44, sur tout le pourtour de celui-ci, de sorte que la soudure est réalisée intégralement autour du réservoir 32. Préférentiellement, la soudure est une soudure par ultrason. Cette soudure permet ici de réaliser une fixation de la buse de projection 10 sur le corps principal 6 par un mélange de matière, empêchant dès lors de désolidariser la buse de projection 10 du corps principal 6.According to the invention, the fixing system 12 is a weld between the projection nozzle 10 and the main body 6, and more particularly between the internal face 34 of the projection nozzle and the bottom wall 44 of the receiving housing formed in the main body 6. The welding is carried out in particular on the peripheral side 44, over the entire periphery thereof, so that the welding is carried out entirely around the tank 32. Preferably, the welding is an ultrasonic welding. This welding here makes it possible to attach the projection nozzle 10 to the main body 6 by a mixture of material, thereby preventing the projection nozzle 10 from being separated from the main body 6.
De plus, une soudure entre la buse de projection 10 et le corps principal 6 tend à rendre hermétique le conduit d’acheminement 8 et/ou le réservoir 32 du milieu extérieur, empêchant les fuites de fluide nettoyant à la zone de jonction entre la buse de projection 10 et le corps principal 6.In addition, a weld between the projection nozzle 10 and the main body 6 tends to seal the conveying conduit 8 and/or the reservoir 32 from the external environment, preventing leaks of cleaning fluid at the junction zone between the nozzle projection 10 and the main body 6.
Tel qu’illustré ici sur la , la soudure s’inscrit dans un même plan. On comprend que la face interne 34, et notamment le flanc périphérique 44, sur laquelle est réalisée la soudure du système de fixation 12 s’inscrit dans un plan qui est parallèle au plan de la face du corps principal 6 qui est soudée à ladite face interne 34 de la buse de projection 10, c’est-à-dire ici la paroi de fond 44 du logement 28.As shown here on the , the weld is part of the same plane. It is understood that the internal face 34, and in particular the peripheral side 44, on which the fixing system 12 is welded is in a plane which is parallel to the plane of the face of the main body 6 which is welded to said face internal 34 of the projection nozzle 10, that is to say here the bottom wall 44 of the housing 28.
Dans l’exemple illustré, la soudure entre la buse de projection 10 et corps principal 6 est réalisée dans la zone des moyens de positionnement 48. On comprend ici qu’une fois la buse de projection 10 montée contre le corps principal 6, et que la nervure des moyens de positionnement 48 est disposée dans la rainure des moyens de positionnement 48, le soudage est réalisé au niveau de ces moyens de positionnement 48. Réaliser le soudage de la buse de projection 10 et du corps principal 6 au niveau des moyens de positionnement 48 formé par des organes mâles et femelles coopérant entre eux favorise le mélange de matière entre la buse de projection 10 et le corps principal 6 et optimise la soudure en résultant.In the example illustrated, the weld between the projection nozzle 10 and main body 6 is carried out in the area of the positioning means 48. It is understood here that once the projection nozzle 10 is mounted against the main body 6, and that the rib of the positioning means 48 is arranged in the groove of the positioning means 48, the welding is carried out at the level of these positioning means 48. Carry out the welding of the projection nozzle 10 and the main body 6 at the level of the means of positioning positioning 48 formed by male and female members cooperating with each other promotes the mixing of material between the projection nozzle 10 and the main body 6 and optimizes the resulting weld.
Selon un exemple particulier de réalisation non représenté sur les figures, la buse de projection 10 comprend plusieurs canaux 14 disposés les uns à côtés des autres le long d’une direction sécante à leur direction d’extension principale, les canaux 14 comprenant chacun un orifice de sortie 20 débouchant d’un plan incliné en regard du déflecteur 16. On comprend ici que les canaux 14 forment une rampe de projection, produisant plusieurs projections différés ou simultanés de fluide nettoyant contre le déflecteur 16, ces projections différés ou simultanés de fluide nettoyant formant ensuite différents jets plats 4 de protection.According to a particular embodiment not shown in the figures, the projection nozzle 10 comprises several channels 14 arranged next to each other along a direction intersecting their main direction of extension, the channels 14 each comprising an orifice outlet 20 opening from an inclined plane facing the deflector 16. It is understood here that the channels 14 form a projection ramp, producing several delayed or simultaneous projections of cleaning fluid against the deflector 16, these delayed or simultaneous projections of cleaning fluid then forming different flat protective jets 4.
Ce déflecteur 16 peut tout aussi bien être formé par une seule paroi s’étendant en regard de chacun des orifices de sortie 20 des canaux 14, ou bien par plusieurs parois, chacune des parois étant disposées en regard de l’un des orifices de sortie 20 des canaux 14. Cette dernière configuration permet de générer facilement des angles de projection différents d’un ou plusieurs des jets de projection réalisés par la rampe.This deflector 16 can just as easily be formed by a single wall extending facing each of the outlet orifices 20 of the channels 14, or by several walls, each of the walls being arranged facing one of the outlet orifices 20 of the channels 14. This last configuration makes it possible to easily generate different projection angles of one or more of the projection jets produced by the ramp.
On va maintenant décrire un deuxième mode de réalisation de l’invention en référence à la . Les éléments communs entre les deux modes de réalisation garderont la même référence au cours de la description de ce deuxième mode de réalisation de l’invention.We will now describe a second embodiment of the invention with reference to the . The common elements between the two embodiments will keep the same reference during the description of this second embodiment of the invention.
Tel qu’illustré sur la , la buse de projection 10 prend la forme d’un embout disposé à une extrémité du corps principal 6.As illustrated on the , the projection nozzle 10 takes the form of a tip placed at one end of the main body 6.
Plus particulièrement, la buse de projection 10 s’étend le long d’une direction d’allongement principal en présentant une extrémité de projection 50 où est disposé au moins le déflecteur 16 et l’orifice de sortie 20 du canal 14 et une extrémité de liaison 52 opposée configurée pour être reliée au corps principal.More particularly, the projection nozzle 10 extends along a direction of main elongation by presenting a projection end 50 where at least the deflector 16 and the outlet orifice 20 of the channel 14 and an end of opposite connection 52 configured to be connected to the main body.
La buse de projection 10 comporte un élément d’encliquetage 54 constitutif du système de fixation 12 et disposé à l’extrémité de liaison 52.The projection nozzle 10 comprises a latching element 54 constituting the fixing system 12 and arranged at the connecting end 52.
La buse de projection 10 comprend ici une paroi annulaire délimitant au moins en partie le réservoir 32 et un logement du corps principal 6. Cette paroi annulaire est ouverte à l’extrémité de liaison 52 pour recevoir le corps principal 6, et plus particulièrement une extrémité de raccordement 58 dans laquelle débouche le conduit d’acheminement 8 du fluide nettoyant.The projection nozzle 10 here comprises an annular wall delimiting at least partly the reservoir 32 and a housing of the main body 6. This annular wall is open at the connecting end 52 to receive the main body 6, and more particularly one end connection 58 into which the conveying conduit 8 of the cleaning fluid opens.
L’élément d’encliquetage 54 comporte par exemple un organe élastiquement déformable installé à l’extrémité de liaison 52 de la buse de projection 10, l’organe élastiquement déformable étant destiné à coopérer avec un organe rigide 56 du corps principal 6. La illustre une étape de montage de la buse de projection 10 sur le corps principal, juste avant que l’élément d’encliquetage 54 ne vienne en prise sur l’organe rigide 56, par translation le long de sa direction d’allongement principal.The latching element 54 comprises for example an elastically deformable member installed at the connecting end 52 of the projection nozzle 10, the elastically deformable member being intended to cooperate with a rigid member 56 of the main body 6. illustrates a step of mounting the projection nozzle 10 on the main body, just before the latching element 54 engages with the rigid member 56, by translation along its main elongation direction.
On comprend ici que la buse de projection 10 présente successivement, le long de la direction d’allongement principal, une portion de liaison participant à délimiter le réservoir 32 et le logement du corps principal 6, et une portion de projection comprenant le déflecteur 16 et le canal 14. De la sorte, le dispositif de projection selon l’invention diffère de ce qui a pu être précédemment décrit en ce que le déflecteur 16 ne repose pas contre une paroi du corps principal 6. Toutefois, conformément à l’invention, la buse de projection forme un ensemble monobloc comportant une zone de projection 38, un canal 14 d’alimentation de fluide nettoyant vers cette zone de projection, et un déflecteur délimitant la zone de projection et contre laquelle le fluide nettoyant est projeté en sortie du canal 14. Là encore, le regroupement de tous ces éléments dans une pièce d’un seul tenant, fixé par ailleurs sur le corps principal, permet de contrôler l’agencement du canal 14 par rapport au déflecteur en s’assurant ainsi du bon positionnement par rapport au déflecteur 16 de l’orifice de sortie 20 et du plan incliné 40 dans lequel s’inscrit l’orifice de sortie.It is understood here that the projection nozzle 10 presents successively, along the direction of main elongation, a connecting portion participating in delimiting the reservoir 32 and the housing of the main body 6, and a projection portion comprising the deflector 16 and the channel 14. In this way, the projection device according to the invention differs from what could have been previously described in that the deflector 16 does not rest against a wall of the main body 6. However, in accordance with the invention, the projection nozzle forms a one-piece assembly comprising a projection zone 38, a channel 14 for supplying cleaning fluid to this projection zone, and a deflector delimiting the projection zone and against which the cleaning fluid is projected at the outlet of the channel 14. Here again, the grouping of all these elements in a single piece, also fixed on the main body, makes it possible to control the arrangement of the channel 14 in relation to the deflector, thus ensuring correct positioning by relative to the deflector 16 of the outlet orifice 20 and the inclined plane 40 in which the outlet orifice fits.
L’invention atteint ainsi le but qu’elle s’est fixée quel que soit le mode de réalisation décrit, en proposant une buse de projection 10 comprenant à la fois un canal 14 apte à projeter un fluide nettoyant et un déflecteur 16 contre lequel est projeté le fluide nettoyant, avec la buse de projection 10 qui est formée d’un seul tenant. Cette conception permet de s’assurer de la bonne position les uns par rapport aux autres des éléments participant à l’orientation du jet de fluide à diriger sur la surface à nettoyer, et elle favorise l’étanchéité d’un dispositif de projection sur lequel est installée la buse de projection en évitant que des projections de fluide nettoyant puisse s’insérer entre des éléments constitutifs du dispositifs de projection.The invention thus achieves the goal it has set for itself regardless of the embodiment described, by proposing a projection nozzle 10 comprising both a channel 14 capable of projecting a cleaning fluid and a deflector 16 against which is projected the cleaning fluid, with the projection nozzle 10 which is formed in one piece. This design makes it possible to ensure the correct position relative to each other of the elements participating in the orientation of the jet of fluid to be directed onto the surface to be cleaned, and it promotes the sealing of a projection device on which The projection nozzle is installed, preventing projections of cleaning fluid from being inserted between the constituent elements of the projection devices.
La présente invention ne saurait toutefois se limiter aux moyens et configurations décrits et illustrés ici et elle s’étend également à tout moyen et configuration équivalents ainsi qu’à toute combinaison techniquement opérante de tels moyens.
The present invention cannot, however, be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically effective combination of such means.

Claims (13)

  1. Buse de projection (10) d’un dispositif de projection (1) d’un fluide nettoyant, la buse de projection (10) destiné être fixé à un corps principal (6) du dispositif de projection (1) délimitant au moins en partie un conduit d’acheminement (8) du fluide nettoyant, caractérisée en ce que la buse de projection (10) comprend au moins un canal (14) configuré pour guider la circulation du fluide nettoyant vers une sortie de projection du fluide nettoyant, et une paroi formant un déflecteur (16) disposé en regard de la sortie de projection du canal (14), la buse de projection (10) étant formée d’un seul tenant.Projection nozzle (10) of a projection device (1) of a cleaning fluid, the projection nozzle (10) intended to be fixed to a main body (6) of the projection device (1) delimiting at least in part a conduit (8) for conveying the cleaning fluid, characterized in that the projection nozzle (10) comprises at least one channel (14) configured to guide the circulation of the cleaning fluid towards a projection outlet of the cleaning fluid, and a wall forming a deflector (16) arranged opposite the projection outlet of the channel (14), the projection nozzle (10) being formed in one piece.
  2. Buse de projection (10) selon l’une quelconque des revendications précédentes, comprenant en outre un système de fixation (12) configuré pour rendre solidaire la buse de projection (10) au corps principal (6) du dispositif de projection (1).Projection nozzle (10) according to any one of the preceding claims, further comprising a fixing system (12) configured to secure the projection nozzle (10) to the main body (6) of the projection device (1).
  3. Buse de projection (10) selon l’une quelconque des revendications précédentes, dans laquelle la buse de projection (10) est réalisée par injection de matière. Spray nozzle (10) according to any one of the preceding claims, in which the spray nozzle (10) is produced by material injection.
  4. Buse de projection (10) selon l’une quelconque des revendications précédentes, comprenant plusieurs canaux (14) disposés les uns à côtés des autres le long d’une direction sécante à leur direction d’extension principale, les canaux (14) comprenant chacun un orifice de sortie (20), le déflecteur (16) s’étendant en regard de chacun des orifices de sortie (20) des canaux (14).Spray nozzle (10) according to any one of the preceding claims, comprising a plurality of channels (14) arranged next to each other along a direction intersecting their main direction of extension, the channels (14) each comprising an outlet orifice (20), the deflector (16) extending opposite each of the outlet orifices (20) of the channels (14).
  5. Buse de projection (10) selon l’une quelconque des revendications 2 à 4, présentant une face interne (34) configurée pour être en regard du corps principal (6) et une face externe (36) opposée sur laquelle débouche une zone de projection (38) du fluide nettoyant, le système de fixation (12) étant disposé sur la face interne (34).Projection nozzle (10) according to any one of claims 2 to 4, having an internal face (34) configured to face the main body (6) and an opposite external face (36) onto which a projection zone opens (38) of the cleaning fluid, the fixing system (12) being arranged on the internal face (34).
  6. Buse de projection (10) selon l’une quelconque des revendications 2 à 4, s’étendant le long d’une direction d’allongement principal en présentant une extrémité de projection (50) où est disposé au moins le déflecteur (16) et l’orifice de sortie (20) du canal (14) et une extrémité de liaison (52) opposée, la buse de projection (10) comprenant un élément d’encliquetage (54) constitutif du système de fixation (12) et disposé à l’extrémité de liaison (52).Projection nozzle (10) according to any one of claims 2 to 4, extending along a direction of main elongation while having a projection end (50) where at least the deflector (16) is arranged and the outlet orifice (20) of the channel (14) and an opposite connecting end (52), the projection nozzle (10) comprising a latching element (54) constituting the fixing system (12) and arranged to the connecting end (52).
  7. Dispositif de projection (1) d’un système de distribution d’un fluide nettoyant, le dispositif de projection (1) comprenant un corps principal (6) participant à délimiter un conduit d’acheminement (8) du fluide nettoyant et une buse de projection (10) caractérisée selon l’une quelconque des revendications précédentes, le canal (14) communiquant fluidiquement avec le conduit d’acheminement (8).Projection device (1) of a cleaning fluid distribution system, the projection device (1) comprising a main body (6) participating in delimiting a conveying conduit (8) of the cleaning fluid and a nozzle of projection (10) characterized according to any one of the preceding claims, the channel (14) communicating fluidly with the conveying conduit (8).
  8. Dispositif de projection (1) selon la revendication précédente, comprenant un réservoir (32) du fluide nettoyant disposé entre le conduit d’acheminement (8) et le canal (14) de la buse de projection (10), la buse de projection (10) participant au moins en partie à délimiter le réservoir (32).Projection device (1) according to the preceding claim, comprising a reservoir (32) of the cleaning fluid disposed between the conveying conduit (8) and the channel (14) of the projection nozzle (10), the projection nozzle ( 10) participating at least in part in delimiting the reservoir (32).
  9. Dispositif de projection (1) selon l’une quelconque des revendications 7 ou 8 en combinaison avec la revendication 5, dans lequel le corps principal (6) comprend un logement de la buse de projection (10), le déflecteur (16) présentant une surface interne (22) en regard de l’orifice de sortie (20) du canal (14) et une surface externe (46) en regard d’une paroi du corps principal (6) participant à délimiter le logement.Projection device (1) according to any one of claims 7 or 8 in combination with claim 5, wherein the main body (6) comprises a housing for the projection nozzle (10), the deflector (16) having a internal surface (22) facing the outlet orifice (20) of the channel (14) and an external surface (46) facing a wall of the main body (6) participating in delimiting the housing.
  10. Dispositif de projection (1) selon l’une quelconque des revendications 7 à 9 en combinaison avec la revendication 5, dans lequel le système de fixation (12) est une soudure entre la face interne (34) de la buse de projection (10) et le corps principal (6).Projection device (1) according to any one of claims 7 to 9 in combination with claim 5, in which the fixing system (12) is a weld between the internal face (34) of the projection nozzle (10) and the main body (6).
  11. Dispositif de projection (1) selon la revendication précédente, dans lequel la soudure s’étend sur la périphérie de la face interne (34) de la buse de projection (10).Projection device (1) according to the preceding claim, in which the weld extends over the periphery of the internal face (34) of the projection nozzle (10).
  12. Dispositif de projection (1) selon l’une quelconque des revendications 7 à 11, comprenant des moyens de positionnement (48) de la buse de projection (10) sur le corps principal (6), ces moyens de positionnement (48) comprenant au moins une nervure et une rainure coopérant avec la nervure, la nervure et la rainure étant disposées l’une sur la buse de projection (10), l’autre sur le corps principal (6).Projection device (1) according to any one of claims 7 to 11, comprising means for positioning (48) the projection nozzle (10) on the main body (6), these positioning means (48) comprising at minus a rib and a groove cooperating with the rib, the rib and the groove being arranged one on the projection nozzle (10), the other on the main body (6).
  13. Système de distribution d’un fluide nettoyant comprenant au moins un réservoir de fluide nettoyant, un dispositif de projection (1) du fluide nettoyant caractérisé selon l’une quelconque des revendications 7 à 12 et un conduit d’acheminement (8) du fluide nettoyant reliant fluidiquement le réservoir de fluide nettoyant à la buse de projection (10).
    System for dispensing a cleaning fluid comprising at least one reservoir of cleaning fluid, a projection device (1) of the cleaning fluid characterized according to any one of claims 7 to 12 and a conveying conduit (8) of the cleaning fluid fluidly connecting the cleaning fluid reservoir to the projection nozzle (10).
PCT/EP2023/075693 2022-09-21 2023-09-18 Spray nozzle of a spraying device WO2024061850A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2209565A FR3139734A1 (en) 2022-09-21 2022-09-21 Projection nozzle of a projection device
FRFR2209565 2022-09-21

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WO2024061850A1 true WO2024061850A1 (en) 2024-03-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037492A1 (en) * 2007-08-08 2009-02-12 Volkswagen Ag Washing liquid nozzle for cleaning panel of vehicle, has nozzle opening, which is formed horizontally with multiple slots, and is provided for producing jet of washing liquid on panel
FR3056526A1 (en) * 2016-09-28 2018-03-30 Valeo Systemes D'essuyage CLEANING DEVICE FOR PROJECTING AT LEAST ONE FLUID TO A CLEANING SURFACE OF A MOTOR VEHICLE
FR3056515A1 (en) * 2016-09-28 2018-03-30 Valeo Systemes D'essuyage DEVICE FOR CLEANING AN OUTER SURFACE OF A SENSOR OF A MOTOR VEHICLE
US20220055045A1 (en) * 2018-12-26 2022-02-24 Valeo Systèmes d'Essuyage Fluid spray nozzle for cleaning device for an optical detection system
US20220097656A1 (en) * 2020-09-29 2022-03-31 Ford Global Technologies, Llc Cleaning apparatus for sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037492A1 (en) * 2007-08-08 2009-02-12 Volkswagen Ag Washing liquid nozzle for cleaning panel of vehicle, has nozzle opening, which is formed horizontally with multiple slots, and is provided for producing jet of washing liquid on panel
FR3056526A1 (en) * 2016-09-28 2018-03-30 Valeo Systemes D'essuyage CLEANING DEVICE FOR PROJECTING AT LEAST ONE FLUID TO A CLEANING SURFACE OF A MOTOR VEHICLE
FR3056515A1 (en) * 2016-09-28 2018-03-30 Valeo Systemes D'essuyage DEVICE FOR CLEANING AN OUTER SURFACE OF A SENSOR OF A MOTOR VEHICLE
US20220055045A1 (en) * 2018-12-26 2022-02-24 Valeo Systèmes d'Essuyage Fluid spray nozzle for cleaning device for an optical detection system
US20220097656A1 (en) * 2020-09-29 2022-03-31 Ford Global Technologies, Llc Cleaning apparatus for sensor

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