• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a flow path switch box (30) comprising a housing (31), a chamber (32) and a plurality of solenoid valves ( 40). The housing (31) has an inlet port (50) and a plurality of discharge ports (51, 52, 53). The chamber (32) is connected to the inlet (50). The plurality of solenoid valves (40) are provided in the housing (31), the plurality of solenoid valves (40) each having a stator and a movable member which is movable relative to the stator. The plurality of solenoid valves (40) have inlets connected to the chamber (32) and outlets connected respectively to the discharge ports (51, 52, 53). The plurality of solenoid valves (40) are configured to switch to allow and block the discharge of fluid from the outlets, independently of each other. The plurality of solenoid valves (40) are arranged in parallel with each other in a direction of movement of the movable member. Figure for the abstract: Fig. 4.
    公开号:FR3089921A1
    申请号:FR1914232
    申请日:2019-12-12
    公开日:2020-06-19
    发明作者:Akinobu Kubota；Masaaki Sato
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    Description
    Title of the invention: Flow path switch box and vehicle cleaning system
    Technical area
    The present invention relates to a flow path switching box and a vehicle cleaning system.
    Prior art
    In recent years, vehicles have been fitted with cameras. The information acquired by a camera is for example delivered to a vehicle electronic control unit (ECU) which controls a host vehicle. For example, JPA-2001-171491 discloses a vehicle cleaning means capable of cleaning such a camera with a cleaning liquid.
    Statement of the invention
    Vehicles have developed to be equipped with a plurality of cameras and sensors. It is possible to clean the plurality of cameras and sensors with the vehicle cleaning means described above. In this case, it is envisaged to integrate a plurality of vehicle cleaning means into a vehicle cleaning system and to equip the vehicle with this system.
    When such a vehicle cleaning system is implemented, it is necessary to transport a fluid from a tank storing the cleaning liquid to each cleaning unit. When the piping is connected from a pipe common to each cleaning unit, a large number of solenoid valves is necessary. In case the large number of solenoid valves is provided on several different parts of the vehicle, the assembly work becomes more complicated when the vehicle cleaning system is mounted on the vehicle.
    For this reason, the present invention provides a vehicle cleaning system which easily attaches to a vehicle, and a flow path switch box used in the vehicle cleaning system.
    A flow path switch box includes a housing, a chamber and a plurality of solenoid valves. The housing has an inlet and a plurality of discharge ports. The room is connected to the entrance. The plurality of solenoid valves are provided in the housing, the plurality of solenoid valves each include a stator and a movable member, which is movable relative to the stator. The plurality of solenoid valves have inlets connected to the chamber and outlets connected respectively to the discharge ports. The plurality of solenoid valves are configured to switch to allow and block the discharge of a fluid from the outlets, independently of each other. The plurality of solenoid valves are arranged in parallel with each other in a direction of movement of the movable member.
    A vehicle cleaning system includes the flow path switching box, a plurality of cleaning means connected respectively to the outlets, and a tank connected to the inlet orifice and storing a cleaning liquid. According to the present invention, a vehicle cleaning system, which is easily attached to a vehicle, and a flow path switch box, used in the vehicle cleaning system, are provided.
    Brief description of the drawings
    [0006] 1] Figure 1 is a top view of a vehicle equipped with a cleaning system;
    [0007] [fig.2] Figure 2 is a block diagram of a vehicle system;
    [Fig.3] Figure 3 is a block diagram of the cleaning system;
    Figure 4 is a perspective view of a second flow path switch box; and
    [Fig.5] Figure 5 is a sectional view of a first solenoid valve.
    Description of the embodiments
    Below, a first embodiment of the invention will be described with reference to the drawings. The descriptions of organs having the same reference numbers as the organs which are already described in the description of this embodiment will be omitted for the sake of convenience of description. The dimensions of the members shown in the drawings may be different from their actual dimensions for the sake of convenience of description.
    In the description of this embodiment, a left-right direction, a front-rear direction and a top-bottom direction are suitably mentioned for the convenience of the description. These directions are relative directions set for a vehicle 1 shown in FIG. 1. Here, the up-down direction has an upward direction and a downward direction. The front-rear direction has a forward direction and a rear direction. The left-right direction has a direction to the left and a direction to the right.
    FIG. 1 is a top view of the vehicle 1 equipped with a vehicle cleaning system 100 (hereinafter referred to as a cleaning system 100) according to this embodiment. The vehicle 1 comprises the cleaning system 100. In the present embodiment, the vehicle 1 is an automobile which can move in an automatic driving mode.
    First, a vehicle system 2 of the vehicle 1 will be described with reference to FIG. 2. The Lig. 2 shows a block diagram of the vehicle system 2. As shown in Lig. 2, the vehicle system 2 comprises a vehicle control unit 3, an internal sensor 5, an external sensor 6, a light 7, a man-machine interface (HMI) 8, a global positioning system (GPS) 9, a unit communication system 10, and a map information storage unit 11. The vehicle system 2 further comprises a steering actuator 12, a steering device 13, a brake actuator 14, a brake device 15, a accelerator actuator 16, and an accelerator device 17.
    The vehicle control unit 3 includes an electronic control unit (ECU). The vehicle control unit 3 comprises a processor such as a central processing unit (UCT), a read only memory (ROM) in which various vehicle control programs are stored, and a random access memory (RAM) in which are temporarily stored various vehicle control data. The processor loads onto the RAM a program designated from among the various vehicle control programs stored in the ROM, and performs processing in cooperation with the RAM. The vehicle control unit 3 controls the movement of the vehicle 1.
    The internal sensor 5 can acquire information on the host vehicle. The internal sensor 5 is at least one of an acceleration sensor, a speed sensor, a wheel speed sensor, a gyroscopic sensor or the like. The internal sensor 5 acquires information from the host vehicle, which includes a movement state of the vehicle 1, and delivers the information to the vehicle control unit 3.
    The internal sensor 5 may include a seat occupancy sensor which detects whether a driver is seated in a driver's seat, a face orientation sensor which detects an orientation of the driver's face, and a human presence sensor which detects if a person is in the vehicle.
    The external sensor 6 can acquire information about the exterior of the host vehicle. The external sensor is at least one of a camera, a radar, a LIDAR, or the like. The external sensor 6 acquires information on the exterior of the host vehicle, which comprises an immediate environment of the vehicle 1 (other vehicles, pedestrians, road shapes, traffic signs, obstacles, or the like), and delivers the information to the vehicle control unit 3. Alternatively, the external sensor 6 may include a weather sensor which detects a weather condition, a light sensor which detects the lighting of the immediate environment of the vehicle 1, and analogues.
    The camera has an imaging element such as a charge coupled device (CCD) or a complementary MOS (CMOS). The camera is a camera that detects visible light or an infrared camera that detects infrared rays. The radar is a millimeter wave radar, a microwave radar, a laser radar, or the like.
    LIDAR is the abbreviation for Light Detection and Ranging or Laser Imaging Detection and Ranging. The LIDAR is a sensor which generally emits invisible light towards the front and acquires information on a distance to an object, a shape of the object, a material of the object and a color of the object, and the like on the basis of the light emitted and the light reflected.
    The light 7 is at least one of a headlight or a position light, provided at a front portion of the vehicle 1, a combined rear light provided at a rear portion of the vehicle 1, a flashing light provided at the front portion or a side portion of the vehicle, and various lights to inform pedestrians or other vehicle drivers of the situation of the host vehicle.
    The HMI 8 comprises an input unit which receives a driver input operation and an output unit which delivers the movement information or the like to the driver. The input unit includes a steering wheel, an accelerator pedal, a brake pedal, a driving mode switch which switches a driving mode of vehicle 1, and the like. The output unit is a display device that displays different types of movement information.
    The GPS 9 acquires current position information from the vehicle 1 and delivers the current position information acquired to the vehicle control unit 3. The wireless communication unit 10 receives, from other vehicles, movement information of other vehicles around vehicle 1 and transmits movement information of vehicle 1 to other vehicles (communication between vehicles). The wireless communication unit 10 further receives infrastructure information from infrastructure equipment, such as traffic lights and signal lights, and transmits vehicle movement information to the equipment. infrastructure (road-to-vehicle communication). The cartographic information storage unit 11 is an external storage device, such as a hard disk drive, in which cartographic information is stored, and delivers the cartographic information to the vehicle control unit 3.
    When the vehicle 1 travels in the automatic driving mode, the vehicle control unit 3 automatically generates at least one of a direction control signal, an accelerator control signal, and a signal brake control based on travel status information, immediate environment information, current position information, map information, and the like. The steering actuator 12 receives the steering control signal from the vehicle control unit 3 and controls the steering device 13 based on the received steering control signal. The brake actuator 14 receives the brake control signal from the vehicle control unit 3 and controls the brake device 15 based on the received brake control signal. The accelerator actuator 16 receives the accelerator control signal from the vehicle control unit 3 and controls the accelerator device 17 based on the received accelerator control signal. Consequently, the movement of the vehicle 1 is controlled automatically by the vehicle system 2 in the automatic driving mode.
    Furthermore, when the vehicle 1 is moving in a manual driving mode, the vehicle control unit 3 generates the direction control signal, the accelerator control signal, and the brake control signal according to manual actuation of the driver of the accelerator pedal, the brake pedal, and the steering wheel. Therefore, the direction control signal, the accelerator control signal, and the brake control signal are generated by the manual actuation of the driver, and accordingly, the movement of the vehicle 1 is controlled by the driver in manual driving mode.
    In what follows, the driving mode of the vehicle 1 will be described. Driving mode includes automatic driving mode and manual driving mode. The automatic driving mode includes a fully automatic driving mode, a high-quality driving assistance mode, and a driving assistance mode. In the fully automatic driving mode, the vehicle system 2 automatically performs all of the movement commands comprising a direction command, a brake command, and an accelerator command while the driver cannot drive the vehicle 1. In the high-quality driving assistance mode, the vehicle system 2 automatically carries out all of the movement commands comprising the steering control, the brake control, and the accelerator control while the driver is not driving the vehicle 1 although the driver can drive the vehicle 1. In the driving assistance mode, the vehicle system 2 automatically performs part of the movement commands comprising the steering command, the brake command, and the accelerator while the driver is driving the vehicle with the driving aid of the vehicle system 2.
    Furthermore, in the manual driving mode, the vehicle system 2 does not automatically carry out the movement commands while the driver drives the vehicle 1 without the driving system assistance 2.
    The driving mode of the vehicle 1 can be switched by actuating the driving mode switch. In this case, the vehicle control unit 3 switches the driving mode of the vehicle 1 between the four driving modes (the fully automatic driving mode, the high-quality driving assistance mode, the driving mode driving assistance, and manual driving mode) depending on the actuation by the driver of the driving mode switch. The driving mode of the vehicle 1 can also be switched automatically on the basis of information on an authorized section, where an automatic driving vehicle can move, and a prohibited driving section, where the automatic driving vehicle is prohibited, or based on information on outdoor weather conditions. In this case, the vehicle control unit 3 switches the driving mode of the vehicle 1 on the basis of this type of information. In addition, the driving mode of vehicle 1 can be automatically switched using the seat occupancy sensor, the face orientation sensor, or the like. In this case, the vehicle control unit 3 switches the driving mode of the vehicle 1 on the basis of a signal delivered by the seat occupancy sensor or the face orientation sensor.
    To return to FIG. 1, the vehicle 1 comprises, like the external sensor 6, a front LIDAR 6f, a rear LIDAR 6b, a right LIDAR 6r, a left LIDAR 61, a front camera 6c, and a rear camera 6d. The front LIDAR 6f acquires information on the front of the vehicle 1. The rear LIDAR 6b acquires information on the rear of the vehicle 1. The right LIDAR 6r acquires information on the right of the vehicle 1. The left LIDAR 61 acquires information on the left of the vehicle 1. The front camera 6c acquires information on the front of the vehicle 1. The rear camera 6d acquires information on the rear of the vehicle 1.
    In the example shown in FIG. 1, the front LIDAR 6f is provided at the front portion of the vehicle 1, the rear LIDAR 6b is provided at the rear portion of the vehicle 1, the right LIDAR 6r is provided at a rear portion of the vehicle 1 , and the left LIDAR 61 is provided at a left portion of the vehicle 1, but the present invention is not limited to these. For example, the front LIDAR, the rear LIDAR, the right LIDAR, and the left LIDAR can be arranged collectively on a ceiling portion of the vehicle 1.
    The vehicle 1 comprises a right headlight 7r and a left headlight 71 as a light 7. The right headlight 7r is provided at a right-front portion of the vehicle 1 and the left headlight 71 is provided at a left-front portion of the vehicle 1. The right headlight 7r is provided on the right of the left headlight 71.
    The vehicle 1 has a front window If and a rear window 1b.
    The vehicle 1 includes the cleaning system 100 according to the embodiment of the present invention. The cleaning system 100 removes foreign bodies such as water droplets, mud, and dust adhering to the objects to be cleaned, using a cleaning liquid. In the present embodiment, the cleaning system 100 comprises a front window washer (hereinafter referred to as WW front) 101, a rear window washer (hereinafter referred to as WW rear) 102, a means for cleaning of front LIDAR (hereinafter referred to as front LC) 103, means of cleaning rear LIDAR (hereinafter referred to as rear LC) 104, means of cleaning right LIDAR (hereinafter referred to as right LC) 105, means cleaning of LIDAR left (hereinafter referred to as LC left) 106, means for cleaning headlight right (hereinafter referred to as HC right) 107, means for cleaning headlight left (hereinafter referred to as HC left) 108, a front camera cleaning means 109a, and rear camera cleaning means 109b. Each of the cleaning means 101 to 109b has one or more nozzles and discharges the cleaning liquid (a fluid) from the nozzles to the objects to be cleaned.
    The WW before 101 can clean the front window If. The rear WW 102 can clean the rear window 1b. The LC before 103 can clean the LIDAR before 6f. The rear LC 104 can clean the rear LIDAR 6b. The right LC 105 can clean the right LIDAR 6r. The left LC 106 can clean the left LIDAR 61. The right HC 107 can clean the right headlight 7r. The left HC 108 can clean the left headlight 71. The front camera cleaning means 109a can clean the front camera 6c. The rear camera cleaning means 109b can clean the rear camera 6d. In the following description, the front camera cleaning means 109a and the rear camera cleaning means 109b can be collectively referred to as camera cleaning means 109.
    FIG. 3 is a block diagram of the cleaning system 100. In addition to the cleaning means 101 to 109b, the cleaning system 100 comprises a front tank 111, a front pump 112, a rear tank 113, and a rear pump 114.
    The front WW 101, the front LC 103, the right LC 105, the left LC 106, the right HC 107, the left HC 108, and the front camera cleaning means 109a are connected to the front tank 111 via the front pump 112. The front pump 112 sends a cleaning liquid stored in the front tank 111 to the WW before 101, to the LC before 103, to the right LC 105, to the left LC 106, to the right HC 107, to the left HC 108, and by means of camera cleaning 109.
    The rear WW 102, the rear LC 104, and the rear camera cleaning means 109b are connected to the rear tank 113 via the rear pump 114. The rear pump 114 sends a cleaning liquid stored in the rear tank 113 to the Rear WW 102, rear LC 104, and rear camera cleaning 109b.
    As shown in FIG. 3, the front pump 112 and a plurality of cleaning means comprising the WW front 101, the LC front 103, the right LC 105, the left LC 106, the right HC 107, the left HC 108, and the cleaning means of front camera 109a are connected via a first flow path switch box 20. The rear pump 114 and a plurality of cleaning means including the rear WW 102, the rear LC 104, and the rear camera cleaning means 109b are connected via a second flow path switch box 30.
    The LIG. 4 is a perspective view of the second flow path switch box 30. The first flow path switch box 20 has the same configuration as the second flow path switch box 30 except that the number of solenoid valves 40 is different. As shown in the LIG. 4, the second flow path switching box 30 comprises a housing 31, a chamber 32, and a plurality of solenoid valves 40.
    The housing 31 is formed of resin, for example. The housing 31 maintains its interior in a watertight manner. That is, the housing 31 prevents water from getting inside and also prevents water from leaking out. The housing 31 has an inlet port 50, a first discharge port 51, a second discharge port 52, and a third discharge port 53.
    Chamber 32 maintains its interior in a watertight manner. The chamber 32 has an inlet connected to the inlet orifice 50 of the housing 31, a first outlet 33, a second outlet 34, and a third outlet 35. The inlet of the room 32 is connected to the rear pump 114 at from inlet 50 via a pipe (not shown). The cleaning liquid sent from the rear pump 114 is stored in chamber 32.
    A first solenoid valve 41, a second solenoid valve 42 and a third solenoid valve 43 can switch in order to allow and block the discharge of the cleaning liquid from their outlets, independently of each other. The first solenoid valve 41, the second solenoid valve 42 and the third solenoid valve 43 have the same configuration.
    The LIG. 5 is a sectional view of the first solenoid valve 41. The first solenoid valve 41 can switch between an open state of possible discharge of the cleaning liquid from the discharge and a closed state of blocked discharge of the cleaning liquid. The first solenoid valve 41 comprises a cylinder 61 having an inlet 61a and a discharge 61b, a plunger 62 (a movable element) movable linearly in the cylinder 61, and a coil 63 (a stator) provided on an external peripheral side of the cylinder 61, a yoke 64 covering the coil 63, and a spring 65. A tip end of the plunger 62 is provided with a sealing portion 66. The cylinder 61 is provided with a cylinder seat 67. When the portion d the seal 66 is in close contact with the cylinder seat 67, the cylinder is closed.
    In this embodiment, the spring 65 is provided in the cylinder 61 in a compressed state. Following an elastic return force of the spring 65, the sealing portion 66 provided on the plunger 62 is pressed against the cylinder seat 67. For this reason, in a normal state where the coil 63 is not excited, the first solenoid valve 41 is in the closed state.
    When the coil 63 is energized, the plunger 62 is drawn towards the coil 63 in opposition to the elastic return force of the spring 65 so that the sealing portion 66 is separated from the cylinder seat 67. Consequently, the solenoid valve 40 is brought to the open state.
    The inlet 61a of the cylinder 61 of the first solenoid valve 41 is connected to the first discharge 33 of the chamber 32. The discharge 61b of the cylinder 61 of the first solenoid valve 41 is connected to the first discharge orifice 51 of the housing 31. From even, as shown in FIG. 4, the inlet 61a of the cylinder 61 of the second solenoid valve 42 is connected to the second discharge 34 of the chamber 32. The discharge 61b of the cylinder 61 of the second solenoid valve 42 is connected to the second discharge port 52 of the housing 31. The inlet 61a of the cylinder 61 of the third solenoid valve 43 is connected to the third discharge 35 of the chamber 32. The discharge 61b of the cylinder 61 of the third solenoid valve 43 is connected to the third discharge port 53 of the housing 31.
    As shown in FIG. 4, the directions of movement A, B, and C of the plungers 62 of the plurality of solenoid valves 40 are arranged in parallel with each other. As shown in FIG. 5, the solenoid valve 40 has an elongated shape in the direction of movement of the plunger 62. By arranging the plurality of solenoid valves 40 so that the directions of movement of the plungers 62 are parallel to each other, the path switching boxes of flow 20, 30 may be small.
    For the same reason, when the housing 31 is of rectangular parallelepiped shape, it is preferable to provide a plurality of discharge orifices 51 to 53 on a single surface.
    The cleaning system 100, comprising at least the flow path switching boxes 20, 30, the plurality of cleaning means 101 to 109b connected to the discharge orifices of the flow path switching boxes 20, 30, and the tanks 111, 113 which store the cleaning liquid and which are connected to the inlet orifices 50 of the flow path switch boxes 20, 30, is mounted on the vehicle 1.
    The cleaning system 100, comprising the flow path switching boxes 20, 30, facilitates a mounting operation of the plurality of solenoid valves 40 on the vehicle 1, compared to a cleaning system in which the plurality solenoid valves 40 must be attached individually to the vehicle.
    In the above embodiment, the cleaning liquid sent from the rear pump 114 is temporarily stored in the chamber 32. For this reason, even when, for example, large pressure variations occur in the pipe between the solenoid valves 40 and the pumps, all the solenoid valves 40 are brought into the open state at the same time, the pressure variations can be evacuated through the chamber 32 and the cleaning liquid can be stably discharged from solenoid valves 40.
    Although the first solenoid valve 41 is a normally closed solenoid valve 40, the solenoid valve 40 may be a normally open solenoid valve 40.
    The above embodiment describes an example in which the plurality of solenoid valves 40 are arranged on the same plane, but the present invention is not limited to these. A group of units comprising the solenoid valves 40 arranged on the same plane can be stacked in a direction orthogonal to the arrangement plane.
    A flow path switching box can be mounted on the vehicle so that the normal line of the arrangement surface of the solenoid valves 40 extends in the up-down direction of the vehicle. The flow path switch box can also be mounted on the vehicle so that the normal line of the arrangement surface of the solenoid valves 40 extends in the left-right direction of the vehicle. The flow path switch box can also be mounted on the vehicle so that the normal line of the arrangement surface of the solenoid valves 40 extends in the front-rear direction of the vehicle.
    Although the embodiment above describes an example in which two flow path switch boxes comprising the first flow path switch box 20 and the second flow path switch box 30 are mounted on the vehicle, a single flow path switch box can be mounted on the vehicle or three or more flow path switch boxes can be mounted on the vehicle.
    <Miscellaneous modifications>
    Although the embodiment of the present invention has been described, it goes without saying that the technical scope of the present invention should not be interpreted as being limited to the description of the present embodiment. The present embodiment is only an example and those skilled in the art will appreciate that various modifications of the embodiment can be made within the scope of the invention described in the claims. The technical scope of the present invention should be determined according to the scope of the invention described in the claims and their equivalent scope.
    Although the present embodiment describes the vehicle driving mode as comprising the fully automatic driving mode, the high-quality driving assistance mode, the driving assistance mode, and the mode manual driving, the vehicle driving mode should not be limited to these four modes. The vehicle driving mode may include at least one of these four modes. For example, only one of the vehicle driving modes can work.
    In addition, a classification and a device for displaying the driving mode of the vehicle can be modified as appropriate according to regulations or rules relating to automatic driving in each country. Likewise, the definitions of fully automatic driving mode, high quality driving assistance mode, and driving assistance mode in the description of this embodiment are only examples and can be modified. appropriately according to the regulations or rules relating to automatic driving in each country.
    Although the embodiment below describes an example in which the cleaning system 100 is mounted on a vehicle capable of driving itself, the cleaning system 100 can be mounted on a vehicle that cannot be driven automatically.
    Although the embodiment below describes an example in which the cleaning means 101, 103, 105 to 109a are connected to the front tank 111 and the cleaning means 102, 104, 109b are connected to the rear tank 113 , the present invention is not limited to this.
    The cleaning means 101 to 109b can be connected to a reservoir. The cleaning means 101 to 109b can also be connected to different tanks.
    Alternatively, the cleaning means 101 to 109b can be connected to a common tank for each type of object to be cleaned. For example, the cleaning means 103 to 106 for cleaning the LIDAR can be connected to a first common tank and the cleaning means 107 and 108 to clean the headlight can be connected to a second tank different from the first tank.
    Alternatively, the cleaning means 101 to 109b can be connected to a common tank for each arrangement position of the objects to be cleaned. For example, the front WW 101, the front LC 103, and the front camera cleaning means 109a can be connected to a common front tank, the right LC 105 and the right HC 107 can be connected to a common right tank, the Rear WW 102, rear LC 104, and rear camera cleaning means 109b can be connected to a rear common tank, and left LC 106 and left HC 108 can be connected to a common left tank.
    权利要求:
    Claims (1)
    [1" id="c-fr-0001]
    Claims [Claim 1] A flow path switch box (20, 30) comprising: a housing (31) having an inlet port (50) and a plurality of discharge ports (51, 52, 53);a chamber (32) connected to the inlet (50); anda plurality of solenoid valves (40) provided in the housing (31), the plurality of solenoid valves (40) each comprising a stator (63) and a movable member (62) which is movable relative to the stator (63), wherein the plurality of solenoid valves (40) have inlets connected to the chamber (32) and outlets connected respectively to the discharge ports (51, 52, 53), wherein the plurality of solenoid valves (40) are configured to switch to to allow and block the discharge of a fluid from the discharges, independently of each other, and in which the plurality of solenoid valves (40) are arranged in parallel with each other in a direction of movement of the mobile element (62). [Claim 2] Vehicle cleaning system (100) comprising:the flow path switch box (20, 30) according to claim 1;a plurality of cleaning means connected respectively to the outlets; anda reservoir connected to the inlet (50) and configured to store a cleaning liquid.
    1/5
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20200189530A1|2020-06-18|
    DE102019219325A1|2020-06-18|
    JP2020094624A|2020-06-18|
    CN111301351A|2020-06-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2001171491A|1999-12-16|2001-06-26|Matsushita Electric Ind Co Ltd|On-vehicle camera device and on-vehicle camera cleaning method|US11247644B2|2019-08-30|2022-02-15|Ford Global Technologies, Llc|Vehicle sensor cleaning with additives|
    FR3113467A1|2020-08-24|2022-02-25|Valeo Systèmes D’Essuyage|Fluid projection device for cleaning a surface of a motor vehicle.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2018-232500|2018-12-12|
    JP2018232500A|JP2020094624A|2018-12-12|2018-12-12|Flow passage switching box and vehicle cleaner system|
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