WO2022107444A1 - センサユニット - Google Patents

センサユニット Download PDF

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Publication number
WO2022107444A1
WO2022107444A1 PCT/JP2021/034916 JP2021034916W WO2022107444A1 WO 2022107444 A1 WO2022107444 A1 WO 2022107444A1 JP 2021034916 W JP2021034916 W JP 2021034916W WO 2022107444 A1 WO2022107444 A1 WO 2022107444A1
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WO
WIPO (PCT)
Prior art keywords
exposed surface
flow path
axis direction
sensor unit
guide
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Application number
PCT/JP2021/034916
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English (en)
French (fr)
Japanese (ja)
Inventor
光宏 清野
浩 上杉
弘典 大林
Original Assignee
株式会社デンソー
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Filing date
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Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2022107444A1 publication Critical patent/WO2022107444A1/ja

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    • 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
    • B60S1/62—Other vehicle fittings for cleaning

Definitions

  • This disclosure relates to the sensor unit.
  • a sensor unit in which the sensing area of an outside world sensor that acquires information on the outside world in a vehicle is set through an exposed surface exposed to the outside world is widely known.
  • the outer surface of the window is cleaned by injecting a cleaning fluid from a cleaning nozzle as an exposed surface of an external sensor in which a sensing region is set on the side of the vehicle. ..
  • Patent Document 1 it becomes difficult for the cleaning fluid to spread on the outer surface of the window depending on the amount of the cleaning fluid injected from the cleaning nozzle. As a result, there is a risk of poor cleaning of the exposed surface. Particularly in recent years, poor cleaning of the exposed surface in a vehicle in the automatic driving control mode is not desirable because there is a concern that the sensing performance may fluctuate and the accuracy of the automatic driving control may deteriorate.
  • An object of the present disclosure is to provide a sensor unit that suppresses cleaning defects on the exposed surface of the external sensor.
  • the sensing area of the outside world sensor that acquires information on the outside world in the vehicle is a sensor unit that is set through the exposed surface exposed to the outside world.
  • a cleaning nozzle that sprays a cleaning fluid toward the exposed surface to clean the exposed surface It is provided with a flow path forming structure for forming a guide flow path for guiding the air flow generated by the inflow of the running wind as the vehicle travels toward the exposed surface.
  • the air flow generated by the inflow of the running wind accompanying the running of the vehicle is guided toward the exposed surface of the external sensor.
  • the cleaning fluid ejected from the cleaning nozzle toward the exposed surface may be diffused by colliding with the air flow in the guide flow path. Therefore, it is possible to spread the cleaning fluid on the exposed surface and suppress cleaning defects on the exposed surface.
  • FIG. 3 is a sectional view taken along line IV-IV of FIG.
  • FIG. 3 is a sectional view taken along line VV of FIG.
  • FIG. 7 is a cross-sectional view taken along the line VIII-VIII of FIG. FIG.
  • FIG. 7 is a cross-sectional view taken along the line IX-IX of FIG. It is a side view for demonstrating the characteristic of the sensor unit by 2nd Embodiment. It is a side view which shows the detailed structure of the sensor unit by 3rd Embodiment. It is a side view for demonstrating the characteristic of the sensor unit by 3rd Embodiment. It is a side view which shows the detailed structure of the sensor unit by 4th Embodiment. It is a side view for demonstrating the characteristic of the sensor unit by 4th Embodiment. It is a side view which shows the detailed structure of the sensor unit by 5th Embodiment. It is a side view for demonstrating the characteristic of the sensor unit by 5th Embodiment.
  • the sensor unit 1 of the first embodiment is mounted on the vehicle 2.
  • the vehicle 2 is capable of constantly or temporarily automatically traveling in the automatic driving control mode.
  • the automated driving control mode may be realized by autonomous driving control in which the system at the time of operation executes all driving tasks, such as conditional driving automation, advanced driving automation, or complete driving automation.
  • the automated driving control mode may be implemented in advanced driving assistance control in which the occupant performs some or all driving tasks, such as driving assistance or partial driving automation.
  • the automatic driving control mode may be realized by combining or switching between the autonomous driving control and the advanced driving support control.
  • the sensor unit 1 includes a housing 3, a sensor system 4, a cleaning system 5, and a control system 6.
  • the description regarding the direction of the sensor unit 1 will be described with reference to the vehicle 2 on the horizontal plane.
  • the vehicle 2 is defined with a traveling direction X along the roll axis direction, a pitch axis direction Y, and a yaw axis direction Z.
  • the front and rear of the traveling direction X may be fixed regardless of the switching of the traveling direction X, or may be reversed according to the switching of the traveling direction X.
  • the housing 3 is formed into a hollow flat rectangular box shape or the like by, for example, resin, metal, or a combination thereof.
  • the housing 3 is installed on the roof 20 of the vehicle 2.
  • the housing 3 has an outer wall portion 31 erected along the four sides of the roof 20 on the front side and the rear side in the traveling direction X and on the left side and the right side in the pitch axis direction Y, respectively.
  • a plurality of sensor windows 32 are opened in each outer wall portion 31.
  • Each sensor window 32 is covered with a plate-shaped transparent cover 33.
  • the outer surface of each transparent cover 33 constitutes an exposed surface 330 exposed to the outside world of the vehicle 2.
  • the sensor system 4 is configured to include a plurality of external world sensors 40.
  • Each external sensor 40 is held inside the housing 3 corresponding to an individual exposed surface 330.
  • the housing 3 functions to accommodate a plurality of external world sensors 40 on the roof 20 of the vehicle 2.
  • Each external sensor 40 is composed of, for example, a camera, LiDAR (Light Detection and Ringing / Laser Imaging Detection and Ringing), radar, sonar, and the like, each of which is an individual type.
  • the type is distinguished from each other including the difference in structure, at least two of the external world sensors 40 may be of the same type, or all of the external world sensors 40 may be of different types. May be good.
  • sensing regions Rs that sense the outside world of the vehicle 2 through the corresponding exposed surface 330 are set as shown in FIG.
  • Each outside world sensor 40 acquires information on an object existing in the sensing region Rs of the outside world as sensing information.
  • FIGS. 2 and 3 to 5 described later typically show an example of the external sensor 40a in which the sensing region Rs is set laterally through the exposed surface 330a facing the side in the pitch axis direction Y. ..
  • the cleaning system 5 includes a plurality of cleaning modules 50.
  • Each cleaning module 50 is held across the inside and outside of the housing 3 corresponding to the individual exposed surface 330.
  • each cleaning module 50 also corresponds to an individual external sensor 40.
  • Each cleaning module 50 targets the exposed surface 330 located in the sensing region Rs of the corresponding external sensor 40 as a cleaning target.
  • each cleaning module 50 has at least one cleaning nozzle 51 that injects a cleaning fluid toward the exposed surface 330 to be cleaned.
  • the cleaning fluid jetted from the cleaning nozzle 51 in each cleaning module 50 to clean the exposed surface 330 may be, for example, a cleaning gas such as air or a cleaning liquid.
  • each cleaning module 50 may have at least one cleaning wiper for wiping the exposed surface 330 to be cleaned, in addition to the cleaning nozzle 51.
  • FIGS. 3 to 5 typically show an example of the cleaning nozzle 51a corresponding to the external world sensor 40a for the side as described above.
  • the control system 6 is held inside the housing 3.
  • the control system 6 is mainly composed of at least one dedicated computer.
  • the control system 6 controls the sensor system 4 and the cleaning system 5 of the sensor unit 1 and the inside of the vehicle 2 via at least one of LAN (Local Area Network), covered wiring, wire harness, internal bus, and the like. Connected to the system.
  • the control system 6 controls the operation of at least the cleaning nozzle 51 in the cleaning system 5 based on the sensing information of at least the external sensor 40 in the sensor system 4.
  • the control system 6 realizes a control mode including an automatic driving control mode in collaboration with the control system inside the vehicle 2 based on at least the sensing information of the external sensor 40 in the sensor system 4.
  • the housing 3 accommodates a plurality of external world sensors 40a in which the sensing region Rs is set laterally through the exposed surface 330a facing the side in the pitch axis direction Y, arranged side by side in the traveling direction X.
  • the lateral outer wall portion 31a that exposes each of the lateral exposed surfaces 330a corresponding to these external world sensors 40a toward the lateral outer world in the pitch axis direction Y is on the roof 20 of the vehicle 2. Is arranged on both sides of the pitch axis direction Y.
  • the housing 3 is configured to include a flow path forming structure 34 individually provided on each of the lateral outer wall portions 31a to construct a guide flow path 340 on the roof 20. Therefore, in the following, the flow path forming structure 34 arranged on the left side in the pitch axis direction Y in the vehicle 2 traveling toward the front in the traveling direction X will be typically described.
  • the flow path forming structure 34 has a guide surface 341.
  • the guide surface 341 is formed in a planar shape in a virtual plane S that extends along the traveling direction X and the yaw axis direction Z and is substantially perpendicular to the pitch axis direction Y.
  • the guide surface 341 is substantially flush with each side exposed surface 330a. As a result, each exposed surface 330a is formed and arranged on the single virtual plane S.
  • the flow path forming structure 34 has a pair of guide protrusions 342.
  • Each guide protrusion 342 projects from the upper edge portion and the lower edge portion in the yaw axis direction Z toward the lateral outer world in the pitch axis direction Y on the guide surface 341, respectively.
  • a guide flow path 340 is formed between the guide protrusions 342 in the yaw axis direction Z along the guide surface 341 and each exposed surface 330a.
  • each guide protrusion 342 jointly forms the guide flow path 340 together with the guide surface 341 and each exposed surface 330a. As a result, each exposed surface 330a is exposed to the lateral outside world through the guide flow path 340.
  • the front side portion 342a in the traveling direction X is closer to each other in the yaw axis direction Z from the front to the rear in the same direction X, for example, a plane. It is inclined like a curved surface or a curved surface.
  • the front side portion 342a of each of these guide protrusions 342 jointly constructs a throttle portion 343 for narrowing the guide flow path 340.
  • the diaphragm portion 343 is arranged in front of any of the exposed surfaces 330a in the traveling direction X.
  • the throttle portion 343 narrows the width ⁇ z of the guide flow path 340 in the yaw axis direction Z toward each exposed surface 330a from the front to the rear in the traveling direction X.
  • the throttle portion 343 opens the guide flow path 340 to the front outside world in the traveling direction X.
  • the traveling wind W generated by the traveling of the vehicle 2 is taken into the flow path forming structure 34 from the open end of the throttle portion 343. It flows into the guide flow path 340.
  • the airflow F generated in the guide flow path 340 is guided toward each exposed surface 330a in a state of being throttled by the throttle portion 343.
  • the posterior portion 342b of the traveling direction X from the front portion 342a is separated from each other in the yaw axis direction Z from the front to the rear in the same direction X.
  • it is inclined in a plane or a curved surface.
  • the rear portion 342b of each of the guide protrusions 342 jointly constructs an enlarged portion 344 that expands the guide flow path 340.
  • the enlarged portion 344 is arranged at a distance above and below each exposed surface 330a in the yaw axis direction Z.
  • the enlarged portion 344 expands the width ⁇ z of the guide flow path 340 in the yaw axis direction Z from the front throttle portion 343 to each of the rear exposed surfaces 330a in the traveling direction X.
  • the enlarged portion 344 opens the guide flow path 340 to the rear outside world in the traveling direction X.
  • the airflow F generated in the guide flow path 340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 is subjected to the throttle action by the throttle portion 343.
  • the throttle portion 343 By being diffused by the enlarged portion 344, it is guided to each exposed surface 330a in the state of a jet flow.
  • the flow path forming structure 34 holds a plurality of cleaning nozzles 51a individually corresponding to each exposed surface 330a.
  • Each cleaning nozzle 51a is arranged so as to be aligned with the central portion of the corresponding exposed surface 330a in the traveling direction X in order to clean the corresponding exposed surface 330a.
  • each cleaning nozzle 51a forms at least one injection port 510a for injecting a cleaning fluid from above to the corresponding exposed surface 330a below in the yaw axis direction Z.
  • the central axis direction of each cleaning nozzle 51a having a cylindrical outer shape is defined as the injection axis direction An shown in FIGS. 3 and 6.
  • the central axis direction of the single injection port 510a may substantially coincide with the injection axis direction An.
  • each cleaning nozzle 51a in the first embodiment is set in the direction from the upper side to the lower side along the yaw axis direction Z.
  • the injection axial direction An of each cleaning nozzle 51a is on the front side of the traveling direction X with respect to the flow direction of the air flow F guided through the guide flow path 340, as schematically shown by the two-dot chain arrow in FIG. Cross at an angle greater than or equal to an acute angle.
  • the air flow F generated by the inflow of the running wind W accompanying the running of the vehicle 2 is guided toward the exposed surface 330a of the external world sensor 40a.
  • the cleaning fluid ejected from the cleaning nozzle 51a toward the exposed surface 330a may be diffused by colliding with the air flow F of the guide flow path 340. Therefore, it is possible to spread the cleaning fluid on the exposed surface 330a and suppress cleaning defects on the exposed surface 330a.
  • the throttle portion 343 throttles the guide flow path 340, so that a jet flow is generated as the air flow F guided by the guide flow path 340.
  • the cleaning fluid ejected from the cleaning nozzle 51a toward the exposed surface 330a can be diffused over a wide range by colliding with the jet flow of the guide flow path 340. Therefore, even if the exposed surface 330a has a wide area matched to the relatively large external sensor 40a, it is possible to suppress the cleaning failure with respect to the exposed surface 330a by spreading the cleaning fluid.
  • the sensing region Rs is set laterally in the pitch axis direction Y of the vehicle 2 through the exposed surface 330a. Therefore, the guide flow path 340 guides the air flow F from the front where the traveling wind W flows in the traveling direction X of the vehicle 2 toward the exposed surface 330a behind, so that the guiding flow path 340 is directed to the cleaning fluid from the cleaning nozzle 51a.
  • the airflow F can collide and diffuse on the side of the exposed surface 330a. Therefore, it is possible to suppress cleaning defects with respect to the exposed surface 330a of the external sensor 40a that senses the side surface.
  • the guide flow path 340 according to the first embodiment is narrowed in the yaw axis direction Z of the vehicle 2 toward the exposed surface 330a from the front to the rear in the traveling direction X, so that the jet flows as the airflow F guided to the exposed surface 330. Can be generated. According to this, the cleaning fluid ejected from the cleaning nozzle 51a toward the exposed surface 330a can be diffused over a wide range by colliding with the jet flow of the guide flow path 340. Therefore, even if the exposed surface 330a has a wide area matched to the relatively large external sensor 40a, it is possible to suppress the cleaning failure with respect to the exposed surface 330a by spreading the cleaning fluid.
  • the exposed surface 330a in which the sensing regions Rs are set laterally in the pitch axis direction Y of the plurality of external world sensors 40a arranged in the traveling direction X is formed on a single virtual plane S along the traveling direction X. Will be done.
  • the airflow F is guided from the front where the traveling wind W flows in the traveling direction X to the exposed surface 330a of each external world sensor 40a behind, so that the airflow with respect to the cleaning fluid from the cleaning nozzle 41a.
  • F can collide and diffuse on the sides of the exposed surface 330a. Therefore, it is possible to suppress cleaning defects with respect to the exposed surface 330a of the plurality of external world sensors 40a that sense the sides.
  • the housing 3 for accommodating the external world sensor 40a on the roof 20 of the vehicle 2 includes a flow path forming structure 34 for distributing the cleaning fluid to the exposed surface 330a according to the above-mentioned principle. It is composed. According to this, the sensor unit 1 that senses the outside world by the outside world sensor 40a through the exposed surface 330a that has the effect of suppressing cleaning defects can be easily mounted on the roof 20 of the vehicle 2.
  • the sensing region Rs of the external world sensor 40a in the vehicle 2 in the automatic driving control mode is set through the exposed surface 330a.
  • the second embodiment is a modification of the first embodiment.
  • the flow path forming structure 2034 of the second embodiment has a guide tunnel body 2342 as shown in FIGS. 7 and 8 instead of the pair of guide protrusions 342.
  • the guide tunnel body 2342 projects from the guide surface 341 in an arch shape in the pitch axis direction Y.
  • the inner peripheral hole formed by the guide tunnel body 2342 straight along the traveling direction X constitutes a part of the guide surface 341 and the guide flow path 2340 along each exposed surface 330a.
  • the guide tunnel body 2342 forms the guide flow path 2340 in cooperation with the guide surface 341 and each exposed surface 330a. As a result, each exposed surface 330a is exposed to the lateral outside world through the guide flow path 2340.
  • the facing portion 2342a facing the guide surface 341 with the guide flow path 2340 sandwiched in the pitch axis direction Y in the guide tunnel body 2342 faces from the front to the rear along the traveling direction X.
  • the surface is inclined, for example, in a plane or a curved surface so as to approach the guide surface 341.
  • the facing portion 2342a constructs the diaphragm portion 2343 in cooperation with the guide surface 341.
  • the diaphragm portion 2343 is arranged in front of any of the exposed surfaces 330a in the traveling direction X.
  • the throttle portion 2343 narrows the width ⁇ y of the guide flow path 340 in the pitch axis direction Y toward each exposed surface 330a from the front to the rear along the traveling direction X.
  • the throttle portion 2343 opens the guide flow path 2340 to the front outside world in the traveling direction X.
  • the traveling wind W generated by the traveling of the vehicle 2 is taken into the flow path forming structure 2034 from the open end of the throttle portion 2343. It flows into the guide flow path 2340.
  • the airflow F generated in the guide flow path 2340 is guided toward each exposed surface 330a in a state of being throttled by the throttle portion 2343.
  • the guide flow path 2340 is opened with respect to the upper and lower outer worlds in the yaw axis direction Z and the rear outer world in the traveling direction X. There is.
  • the airflow F generated in the guide flow path 2340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 is subjected to the throttle action by the throttle portion 2343.
  • the guide flow path 2340 in which the width ⁇ y is expanded in the pitch axis direction Y it is diffused and guided to each exposed surface 330a in the state of a jet flow.
  • the guide flow path 2340 according to the second embodiment is narrowed in the pitch axis direction Y toward the exposed surface 330a from the front to the rear in the traveling direction X, so that the jet flows as the airflow F guided to the exposed surface 330a. Can be generated.
  • the cleaning fluid ejected from the cleaning nozzle 51a toward the exposed surface 330a can be diffused over a wide range by colliding with the jet flow of the guide flow path 2340. Therefore, even if the exposed surface 330a has a wide area matched to the relatively large external sensor 40a, it is possible to suppress the cleaning failure with respect to the exposed surface 330a by spreading the cleaning fluid.
  • the third embodiment is a modification of the first embodiment.
  • each guide protrusion 3342 is arranged in front of any of the exposed surfaces 330a in the traveling direction X, and the enlarged portion 344 is jointly constructed. ..
  • the guide flow path 3340 is open to both the lower outer world and the upper outer world in the yaw axis direction Z of each exposed surface 330a.
  • Each guide protrusion 3342 jointly constructs a forced portion 3345 by an intermediate portion 3342c between the front side portion 342a and the rear side portion 3342b in the traveling direction X, respectively.
  • the intermediate portion 3342c of each guide protrusion 3342 is inclined from the front to the rear in the traveling direction X toward the lower side in the yaw axis direction Z, for example, in a planar shape or a curved surface shape.
  • the forced portion 3345 composed of the intermediate portion 3342c moves the guide flow path 3340 downward in the yaw axis direction Z with a predetermined width ⁇ z as it goes from the front throttle portion 343 to the rear enlarged portion 344 in the traveling direction X. It is tilted in the direction Dd.
  • the airflow F generated in the guide flow path 3340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 is subjected to the throttle action by the throttle portion 343. Then, the flow direction is forcibly guided by the forcing unit 3345 before it becomes a jet due to the diffusion action of the expanding unit 344.
  • the flow direction of the airflow F subjected to this forced guidance action is set so as to go downward in the yaw axis direction Z toward each exposed surface 330a from the front to the rear in the traveling direction X, so that each cleaning nozzle 51a Crosses the injection axis direction An at an acute angle on the front side of the traveling direction X.
  • the guide flow path 3340 guides the air flow F so as to go downward in the yaw axis direction Z from the front to the rear exposed surface 330a in the traveling direction X. Therefore, the injection axial direction An in which the cleaning fluid is ejected from the cleaning nozzle 51a toward the lower exposed surface 330a in the yaw axis direction Z is set in a direction intersecting the air flow F, whereby the cleaning fluid and the air flow F F. A vortex is generated at the collision point, and the cleaning fluid is easily diffused. Therefore, it is possible to enhance the action of spreading the cleaning fluid on the exposed surface 330a and to secure the effect of suppressing the cleaning defect on the exposed surface 330a.
  • the guide flow path 3340 according to the third embodiment is opened below the exposed surface 330a in the yaw axis direction Z.
  • the cleaning fluid in the case of the cleaning liquid colliding with the air flow F guided from the front to the rear exposed surface 330a in the traveling direction X by the injection from the cleaning nozzle 51a is the exposed surface 330a.
  • it can be discharged to the outside world from the open portion of the guide flow path 3340 below. According to this, it is possible to improve the dischargeability of the cleaning liquid which tends to contain stains according to the effect of suppressing the cleaning defect on the exposed surface 330a.
  • the fourth embodiment is a modification of the second embodiment.
  • the inner peripheral hole in which the guide tunnel body 4342 forms a part of the guide flow path 4340 is downward in the pitch axis direction Y from the front to the rear in the traveling direction X. It is formed straight along the inclination direction Dd that inclines toward the direction.
  • a guide tunnel body 4342 constructs a throttle portion 4343 to which a forced guide action according to the third embodiment is added by a facing portion 4342a facing the guide surface 341 with the guide flow path 4340 sandwiched in the pitch axis direction Y. ing.
  • the facing portion 4342a of the guide tunnel body 4342 is, for example, planar or curved so as to approach the guide surface 341 in the pitch axis direction Y from the front to the rear in the traveling direction X along the above-mentioned inclination direction Dd. It is inclined like a plane.
  • the throttle portion 4343 narrows the width ⁇ y (not shown) of the guide flow path 4340 toward each exposed surface 330a from the front to the rear in the traveling direction X along the inclination direction Dd.
  • the airflow F generated in the guide flow path 4340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 exerts a diffusion effect due to the expansion of the width ⁇ y.
  • the throttle section 4343 Before it receives and becomes a jet, it receives a forced guidance action in the flow direction from the throttle section 4343 at the same time as the throttle action.
  • the flow direction of the airflow F subjected to this forced guidance action is such that the direction toward each exposed surface 330a from the front to the rear in the traveling direction X is toward the lower side in the yaw axis direction Z, so that the injection of each cleaning nozzle 51a is performed.
  • the axial direction An intersects at an acute angle on the front side of the traveling direction X.
  • the fifth embodiment is a modification of the first embodiment.
  • the cleaning nozzles 5051a corresponding to each exposed surface 330a are arranged so as to be biased rearward from the center of the corresponding exposed surface 330a in the traveling direction X.
  • the injection axial direction An of each of these cleaning nozzles 5051a is inclined from the rear to the front in the traveling direction X from the upper side to the lower side in the yaw axis direction Z.
  • the injection axial direction An of each cleaning nozzle 5051a is inclined from the upper side to the lower side in the yaw axis direction Z from the rear to the front in the traveling direction X.
  • the rear portion 5342b of the lower guide protrusion 5342 in the yaw axis direction Z is arranged in front of any of the exposed surfaces 330a in the traveling direction X.
  • the guide flow path 5340 is open to the lower outside world of each exposed surface 330a in the yaw axis direction Z.
  • the rear side portion 342b of the upper guide protrusion 5342 in the yaw axis direction Z is arranged above the exposed surface 330a in the yaw axis direction Z at a distance as in the first embodiment. ing.
  • the rear portion 342b of the upper guide protrusion 5342 jointly constructs the enlarged portion 344 with the rear portion 5342b of the lower guide protrusion 5342 in front of any of the exposed surfaces 330a, while each of them.
  • the guide inclined portion 5346 is independently constructed above the exposed surface 330a.
  • Each guide projectile 5342 jointly constructs a forced portion 5345 by an intermediate portion 5342c between the front side portion 342a and the rear side portion 5342b in the traveling direction X, respectively.
  • the intermediate portion 5342c of each guide protrusion 5342 is inclined from the front to the rear in the traveling direction X toward the upper side in the yaw axis direction Z, for example, in a planar shape or a curved surface shape.
  • the forced portion 5345 composed of the intermediate portion 5342c moves the guide flow path 5340 upward in the yaw axis direction Z with a predetermined width ⁇ z as it goes from the front throttle portion 343 to the rear enlarged portion 344 in the traveling direction X. It is tilted in the direction Du.
  • the airflow F generated in the guide flow path 5340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 is subjected to the throttle action by the throttle portion 343. Then, the flow direction is forcibly guided by the forcing unit 5345 before it becomes a jet due to the diffusion action of the expanding unit 344.
  • the flow direction of the airflow F subjected to this forced guidance action is set so as to go upward in the yaw axis direction Z toward each exposed surface 330a from the front to the rear in the traveling direction X, so that each cleaning nozzle 5051a It opposes the injection axial direction An of.
  • the opposition is not only a state in which the flow direction of the airflow F is substantially opposite to the injection axis direction An, but also that the flow direction of the airflow F intersects the injection axis direction An at a relatively small acute angle behind the traveling direction X. Including the state of doing. Further, the airflow F in such a flow direction is directed toward each exposed surface 330a from the front to the rear in the traveling direction X by the guide inclined portion 5346 located above the exposed surface 330a in the yaw axis direction Z, so that the yaw axis direction Z You will be guided upwards.
  • the guide flow path 5340 guides the air flow F so as to go upward in the yaw axis direction Z from the front to the rear exposed surface 330a in the traveling direction X. Therefore, the injection axial direction An in which the cleaning fluid is injected toward the lower exposed surface 330a in the yaw axis direction Z from the cleaning nozzle 5051a arranged biased rearward from the center of the exposed surface 330a in the traveling direction X is set.
  • the direction opposite to the air flow F By setting the direction opposite to the air flow F, a vortex is generated at the collision point between the cleaning fluid and the air flow F, and the cleaning fluid is easily diffused. Therefore, it is possible to enhance the action of spreading the cleaning fluid on the exposed surface 330a and to secure the effect of suppressing the cleaning defect on the exposed surface 330a.
  • the guide inclined portion 5346 above the exposed surface 330a is directed upward in the yaw axis direction Z from the front to the rear in the traveling direction X toward the exposed surface 330a. Can also be guided by. According to this, the diffusivity of the cleaning fluid due to the generation of a vortex at the collision point between the cleaning fluid and the air flow F is ensured for a plurality of exposed surfaces 330a, and the effect of suppressing cleaning defects on those exposed surfaces 330a is achieved. It is possible to secure it.
  • the guide flow path 5340 according to the fifth embodiment is opened below the exposed surface 330a in the yaw axis direction Z. Therefore, according to the same principle as that of the third embodiment, it is possible to improve the dischargeability of the cleaning liquid which tends to contain stains according to the effect of suppressing the cleaning defect on the exposed surface 330a.
  • the cleaning nozzle 5051a of the fifth embodiment is arranged corresponding to each exposed surface 330a.
  • the inner peripheral hole in which the guide tunnel body 6342 forms a part of the guide flow path 6340 is upward in the pitch axis direction Y from the front to the rear in the traveling direction X. It is formed straight along the inclination direction Du that inclines toward it.
  • a throttle portion 6343 to which a forced guide action according to the fifth embodiment is added is constructed by a facing portion 6342a facing the guide surface 341 with the guide flow path 4340 sandwiched in the pitch axis direction Y. ing.
  • the facing portion 6342a of the guide tunnel body 6342 is, for example, planar or curved so as to approach the guide surface 341 in the pitch axis direction Y from the front to the rear in the traveling direction X along the above-mentioned inclination direction Du. It is inclined like a plane.
  • the throttle portion 6343 narrows the width ⁇ y (not shown) of the guide flow path 6340 toward each exposed surface 330a from the front to the rear in the traveling direction X along the inclination direction Du.
  • the airflow F generated in the guide flow path 6340 due to the inflow of the traveling wind W accompanying the traveling of the vehicle 2 exerts a diffusion action due to the expansion of the width ⁇ y.
  • the throttle section 6343 Before it receives and becomes a jet, it receives a forced guidance action in the flow direction from the throttle section 6343 at the same time as the throttle action.
  • the flow direction of the airflow F subjected to this forced guidance action is such that the direction toward each exposed surface 330a from the front to the rear in the traveling direction X is toward the upper side in the yaw axis direction Z, so that the injection of each cleaning nozzle 5051a is performed. It opposes the axial direction An.
  • the counter-measure here is the same as in the case of the fifth embodiment.
  • the seventh embodiment is a modification of the first embodiment.
  • the cleaning nozzles 7051a corresponding to each exposed surface 330a are arranged so as to be biased forward from the center of the corresponding exposed surface 330a in the traveling direction X.
  • the injection axial direction An of each of these cleaning nozzles 7051a is set in the direction from the upper side to the lower side along the yaw axis direction Z, as in the first embodiment.
  • the cleaning fluid from the cleaning nozzle 7051a is directed from the front to the rear of the central portion of the exposed surface 330a by the air flow F guided from the front to the rear exposed surface 330a.
  • the cleaning fluid can be distributed to the exposed surface 330a by using the windsock in reverse. Therefore, it is possible to ensure the effect of suppressing cleaning defects on the exposed surface 330a.
  • the exposed surface 330a common to the plurality of external world sensors 40 and 40a may be provided on the single virtual plane S.
  • FIG. 20 typically shows a modified example of the first embodiment.
  • the flow path forming structure 34, 2034, 3034, 4034 has the exposed surface 330 of the external sensor 40 in which the sensing region Rs is set at least one of the front side and the rear side of the traveling direction X. , 5034, 6034 may be constructed.
  • the transparent cover 33 forming the exposed surfaces 330, 330a in the modified examples of the first to seventh embodiments may be provided on the external world sensors 40, 40a itself.
  • the exposed surfaces 330 and 330a may be formed by an optical member such as a lens in the external world sensors 40 and 40a.
  • the exposed surface 330a and the guide surface 341 may be connected in a stepped shape by shifting in the pitch axis direction Y.
  • the biased arrangement configuration of the cleaning nozzle 7051a according to the seventh embodiment may be combined.
  • the central arrangement configuration of the cleaning nozzle 51a according to the first embodiment may be combined.
  • the rear portion 342b of each guide protrusion 342 in the yaw axis direction Z is opened to the upper and lower outer worlds of the exposed surface 330a in the yaw axis direction Z according to the third embodiment. May be.
  • the rear side portion 3342b of each guide protrusion 3342 may be arranged at a distance above and below the exposed surface 330a in the yaw axis direction Z according to the first embodiment.
  • the rear side portion 5342b of the lower guide protrusion 5342 in the yaw axis direction Z is arranged at a distance below the exposed surface 330a in the yaw axis direction Z according to the first embodiment. It may have been done.
  • the rear side portion 5342b of the upper guide projectile 5342 in the yaw axis direction Z is opened to the upper outside world of the exposed surface 330a in the yaw axis direction Z according to the third embodiment. , It is not necessary to construct the guide inclined portion 5346.

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  • Mechanical Engineering (AREA)
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PCT/JP2021/034916 2020-11-19 2021-09-23 センサユニット WO2022107444A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037463U (ja) * 1983-08-24 1985-03-15 本田技研工業株式会社 自動車の後部窓ガラス洗浄装置
KR200354659Y1 (ko) * 2004-03-19 2004-06-30 김기호 자동차 보닛용 풍향가이드
US20130094086A1 (en) * 2011-10-13 2013-04-18 Robert Bosch Gmbh System and method to minimize contamination of a rear view camera lens
JP2015104933A (ja) * 2013-11-28 2015-06-08 Ｎｅｃエンベデッドプロダクツ株式会社 車載カメラの洗浄装置及び車載カメラの洗浄方法
JP2018203074A (ja) * 2017-06-05 2018-12-27 本田技研工業株式会社 車両
CN111152757A (zh) * 2020-01-03 2020-05-15 北京经纬恒润科技有限公司 车辆零部件的污染物防护系统及其控制方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037463U (ja) * 1983-08-24 1985-03-15 本田技研工業株式会社 自動車の後部窓ガラス洗浄装置
KR200354659Y1 (ko) * 2004-03-19 2004-06-30 김기호 자동차 보닛용 풍향가이드
US20130094086A1 (en) * 2011-10-13 2013-04-18 Robert Bosch Gmbh System and method to minimize contamination of a rear view camera lens
JP2015104933A (ja) * 2013-11-28 2015-06-08 Ｎｅｃエンベデッドプロダクツ株式会社 車載カメラの洗浄装置及び車載カメラの洗浄方法
JP2018203074A (ja) * 2017-06-05 2018-12-27 本田技研工業株式会社 車両
CN111152757A (zh) * 2020-01-03 2020-05-15 北京经纬恒润科技有限公司 车辆零部件的污染物防护系统及其控制方法

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